IEPE-Link - Amazon Web Services
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1. 0 0 0 00 0000 40 6 1 Troubleshooting Guide a na ss a CD E P ase hand 40 6 2 Device Status Indicators 0 45 6 3 Updating Node Firmware maana ama Sd kad ence pg ha Oha LEAGUE ka eder sd 46 6 4 Repair and Calibration a a a A a a bI OPcsges 48 6 5 TENG Be AA AA 49 7 Maintenance AA 50 8 Parts and Configurations 0 0 a 51 BSN gn Aa eee eee 51 8 2 Node ACUSSSOIBS aa na a eC EE 52 8 3 Wireless System Equipment 00 0 000 53 8 4 Warranty Information 0 000000000 0000 54 8 5 Product Ordering 12112052030 02014 020400 0024 LG 0GJG 2NG 6G KGG GG AKA AA NAA anaa 55 CG LG LA 56 9 1 Physical Specifications A edax RR UE pex Reid 56 9 2 Operating Specifications gr eri teer petere psu ic se bere Eesen dus o e des cux dE 57 9 3 POMS Na a LL IL UL LM E A 58 9 4 Radio Specifications 0 0 000 59 10 Safety Information 0 0 00 0 60 10 1 Battery Hazards 000 0 000 60 10 2 User Configurable Power Settings 00 00 0000 61 Za LORD MicroStrain SENSING SYSTEMS IEPE Link LXRS Wireless Sensor Node User Manual 11 References o ed as ene ce 62 11 1 Reference Information 62 TU XMDESHIM AA Mu E RED OS RTE eR 63 F LORD MicroStrain SENSING SYSTEMS IEPE Link LXRS Wireless Sensor Node User Manual System2. 48 Downloads i Node372 csv 9 30 2013 3 46PM Microsoft Office E 238 KB 34 Recent Places S Sensorinfo 09 30 2013 T19 46 08 csv 9 6PM fice E 1KB SyncNetworkInfo 09 30 2013 T19 46 08 9 30 2013 3 46PM Microsoft Office E 1K8 A Libraries Documents a Music wo Pictures Bl videos 1v Computer amp Local Disk C PIT a D C cM AA TA RC ERR Cc Co cM CC SCC AN T l l l l l l l l The Microsoft Excel the Time data column in the data file may have to be changed to m d yyyy h mm ss 000 format to be human readable l l l l F LORD MicroStrain 29 SENSING SYSTEMS IEPE Link LXRS Wireless Sensor Node User Manual Node Installation 4 Node Installation 4 1 Mounting Recommendations The IEPE Link LXRS is rated for indoor use only unless housed in a ruggedized outdoor enclosure The node has two mounting tabs with holes for fastening The node can be mounted in any orientation but it is recommended that it is mounted in a way that optimizes the wireless communications For more information see Optimizing the Radio Link on page 31 2X G0 150 3 736 94 89 36 83 2 265 57 53 2 715 68 96 ALL DIMENSIONS ARE IN INCHES mm Figure 18 Mounting the Node F LORD MicroStrain 30 SENSING SYSTEMS IEPE Link LXRS Wireless Sensor Node User Manual Node Installation 4 2 Optimizing the Radio Link In ideal conditions the nodes and gateway can communicate up to two kil
3. 5 hows 02875 X 94 10 5 24hours 01738 156 Table 1 Example IEPE Link LXRS Power Use wa LORD MicroStrain 58 SENSING SYSTEMS IEPE Link LXRS Wireless Sensor Node User Manual Specifications 9 4 Radio Specifications The IEPE Link LXRS Wireless Sensor Node employs a 2 4GHz IEEE 802 15 4 compliant radio transceiver for wireless communication The radio is a direct sequence spread spectrum radio and can be configured to operate on 14 separate frequencies ranging from 2 405 GHz to 2 480GHz Following the 802 15 4 standard these frequencies are aliased as channel 11 through channel 24 For all newly manufactured nodes the default setting is equivalent to 2 425GHz channel 15 For standard models radiated transmit power is programmable from OdBm 1mW to 16dBm 39mW For European models transmit power is limited to 10dBm 10mW The radio complies with ETSI EN 300 328 EN 300 440 Class 2 FCC CFR 47 Part 15 and ARIB STD T66 The radio is license free worldwide Using antennas and transmission equipment other than what is provided with the node may void FCC compliance e The gateway can automatically manage nodes operating on different frequencies by using the Node Discovery feature in Node Commander In this routine the gateway listens for node broadcasts on the frequency channel it is set to If the node is in normal boot up mode it will provide the broadcast when it is initially powered on and
4. 8 5 Product Ordering Products can be ordered directly from the LORD MicroStrain9 website by navigating to the product page and using the Buy feature http www microstrain com wireless For further assistance our sales team is available to help with product selection ordering options and questions Sales Support sensing sales LORD com Phone 802 862 6629 Toll Free 800 449 3878 Fax 802 863 4093 9 00 AM to 5 00 PM Eastern Time US amp Canada Za LORD MicroStrain 55 SENSING SYSTEMS IEPE Link LXRS Wireless Sensor Node User Manual Specifications 9 Specifications 9 1 Physical Specifications 2X 50 150 3 736 94 89 2 265 57 53 2715 68 96 ALL DIMENSIONS ARE IN INCHES mm ALL DIMENSIONS ARE IN INCHES mm Dimensions 95 mm x 79 mm x21 mm Weight 114 grams Enclosure Environmental Rating General purpose protected F LORD MicroStrain 56 SENSING SYSTEMS IEPE Link LXRS Wireless Sensor Node User Manual Specifications 9 2 Operating Specifications Parameter Specification Programmable analog low pass 5th order low pass Butterworth filter with programmable cutoff frequencies ranging filter from 26 Hz to 33 KHz TES impulse response 100 dB in frequency band from 1 2 sample rate to 8x sample rate Time synchronization between IEPE Link LXRS nodes Time synchronization rate stability 3 ppm 2 4 GHz direct sequence spread spectrum license free worldwide 2 405 to 2 470 G
5. LORD USER MANUAL IEPE Link LXRS Wireless IEPE Sensor Node Za LORD MicroStrain SENSING SYSTEMS F LORD MicroStrain SENSING SYSTEMS 2014 LORD Corporation MicroStrain Sensing Systems 459 Hurricane Lane Suite 102 Williston VT 05495 United States of America Phone 802 862 6629 Toll Free 800 449 3878 Fax 802 863 4093 http www microstrain com sensing support LORD com sensing sales LORD com Copyright O 2014 LORD Corporation IEPE Link Torque Link 3DM RQ1 Strain Wizard DEMOD DC DVRT DVRT Link WSDA HS Link TC Link G Link V Link SG Link ENV Link Watt Link Shock Link LXRS Node Commander SensorCloud Live Connect MathEngine EH Link 3DM FAS A 3DM GX19 3DM GX3 3DM GX4 3DM DH 3DM DH3 EmbedSense MicroStrain and Little Sensors Big Ideas 9 are trademarks of LORD Corporation Document 8500 0043 Revision A Subject to change without notice IEPE Link LXRS Wireless Sensor Node User Manual Table of Contents 1 Wireless Sensor Network Overview 0 6 2 Node Overview 0 7 2 1 Components AA 8 2 2 Interface and Indicators 0 0 nr 9 3 System Operation Overview 0 0 10 3 1 Software Installation 000 11 3 2 System Connections sao oo a ga GR 12 3 3 Gateway USB
6. e Network Bandwidth is the total bandwidth used by all the nodes f Enable Beacon on Start Refer to the Node Commander User Manual for more information g Apply settings and start sampling Before acquisition can begin use the Apply Network Settings to save the session settings to the node When completed select Start Sampling to begin h Close sampling window with the red X to exit sampling or once the sampling has been started to view the data window behind it F LORD MicroStrain 25 SENSING SYSTEMS IEPE Link LXRS Wireless Sensor Node User Manual System Operation Overview Synchronized sampling features two data views a grid view and a graph view Once sampling is started the data grid view is the default view l l l l l l l l Depending on the synchronized sampling settings it may take many seconds before the first sample to appear in Node Commander l l l l a om SA TE Sala ngln Papaano Ste eT BR SR PT SEP cr d d FeseeigiMR Ng c sdsD tuandaf 0301 SH Most G tinki0g Node io Gund Game 2 Channel 3 Channel 4 Gums o menm Node RSSI Ue magi epos PEE 28 eer a S N 2419 43690 Sample Rate sue Firmware 8 05 TotalSampies O 3261 q Memory Fut 1 Tener Tick 32613 c fe Num Triggers 14 Lost sores 0 89 Node 31463 Sync ap Gat Success hoax WM Modet V Link du Node 31463 NG 32287 28 26 18 3420 dan pra Mill Options LXRS Samgle Rate ET 4 SIN 2433 3
7. 6 1 Troubleshooting Guide 40 1 POWER gateway or node does not turn on or node does not charge qum node or gateway is turned OFF au external power source OFF or miswired dus wrong power supply or voltage 1 4 node internal source select incorrect 1 5 node battery is dead 1 6 node battery fault 1 7 node or gateway is damaged 2 COMMUNICATION no communication to the gateway or node 2 node or gateway has no power 2 2 gateway has no com with computer 2 3 node cannot be configured 2 4 node is out of range 25 node is not in normal boot mode 2 6 node is sampling 2 node is sleeping 2 8 gateway or node is damaged 3 DATA ACQUISITION sensor data is missing or incorrect 3 no com to node or gateway 3 2 sampling settings are incorrect 28 sampling has not started 3 4 sensor is not connected correctly 3 5 sensor channel not configured correctly 3 6 sensor calibration is invalid 3 7 sensor requires more warm up time va LORD MicroStrain SENSING SYSTEMS IEPE Link LXRS Wireless Sensor Node User Manual Troubleshooting Problem Possible cause and recommended solution 1 1 power switch is off 1 POWER The status indi
8. Parts and Configurations 8 1 Standard Nodes For the most current product information custom and OEM options not listed below refer to the LORD MicroStrain website or contact the LORD MicroStrain Sales Department LORD MicroStrain Model Number Description Part Number IEPE LXRS e Signal channel IEPE input 6316 0010 F LORD MicroStrain 51 SENSING SYSTEMS IEPE Link LXRS Wireless Sensor Node User Manual Parts and Configurations 8 2 Node Accessories The following parts are available for use with the IEPE Link LXRS For the most current product information refer to the LORD MicroStrain website or contact the LORD MicroStrain Sales Department See Product Ordering on page 55 Description LORD MicroStrain Part Number Power supply for IEPE Link LXRS9 9011 009 Power supply plug adapter kit 9011 0022 Antenna 2 4GHz 1 4 wave whip 9010 0048 Table 7 Node Accessories F LORD MicroStrain SENSING SYSTEMS IEPE Link LXRS Wireless Sensor Node User Manual Parts and Configurations 8 3 Wireless System Equipment LORD Model Description MicroStrain9 Part Number SensorCloud Software Subscription om contact LORD MicroStrain Sales 6307 1041 6307 1021 6307 1011 Replacement USBcabe 9022 0029 7 USB Gateway cable extender 6307 0900 Replacementserial cable 4005 005 6314 0050 Ethernet Data Gateway WSDArRGD ruggedized to MILS STD 461F MIL STD 810F
9. the digital equivalent of voltage on the node Burst Sampling a mode of operation in synchronized sampling that takes momentary high sample rate readings with configurable time durations and intervals Calibration to standardize a measurement by determining the deviation standard and applying a correction or calibration factor Configuration a general term applied to the node indicating how it is set up for data acquisition It includes settings such as sampling mode and rate number of active channels channel measurement settings offsets hardware gain and calibration values Coordinated Universal Time UTC the primary time standard for world clocks and time It is similar to Greenwich Mean Time GMT Cycle Power a command transmitted to the node to re boot it either through a hardware or software switch Data Acquisition the process of collecting data from sensors and other devices Data Logging the process of saving acquired data to the system memory either locally on the node or remotely on the host computer DHCP network Dynamic Host Configuration Protocol is the standardized networking protocol used on Internet Protocol IP networks which automatically configures devices that are attached to it by assigning and configuring the device IP address F LORD MicroStrain i SENSING SYSTEMS IEPE Link LXRS Wireless Sensor Node User Manual References Differential signal is a method of transmitting electrical
10. Communication 000 0n nn 13 3 4 Automatic Node Discovery 0000 14 3 5 Channel Configuration rss GG po nn ALL RP 16 3 5 1 Sensor Conversion Values 0 0 0 a 18 452 Saving Sensor Profiles sa nn a is e dd Da e EL ERE rUUe 20 3 6 Sampling Settings 00 00 0000 21 3 7 Synchronized Sampling nee eese senes nies 24 3 8 Data Display and Processing iiic aseo Sepe tace sedisse code gy use aure Das dan alae EE Rue iae Sa 28 3 9 Sensor Data Files 29 4 Node Installation o 0 30 4 1 Mounting Recommendations 00 00 0000 rr 30 4 2 Optimizing the Radio Link 00 0000 0n neee 31 42 1 RangeTest 0aaaaaaaaaa aaa 0000000000000000 00000000000000 a aaao aaa E aaao aaaea anan 32 4 Connecting Sensors anang erue EE Se Uo veo ceed udo ed Daa NANAY y educ EHE 33 5 PoweringtheNode 000000 00 00 0000 34 5 1 Selecting the Power Source 0 34 Za LORD MicroStrain SENSING SYSTEMS IEPE Link LXRS Wireless Sensor Node User Manual 5 2 Using the Internal Node Battery 00 00 0000 36 5 3 Charging the Node Battery 00 nn nn 37 5 4 Connecting an External Power Supply 0 0 0 e 38 5 5 Terminal Block Connections 0 0n rr 39 6 Troubleshooting
11. Firmware Window Za LORD MicroStrain 47 SENSING SYSTEMS IEPE Link LXRS Wireless Sensor Node User Manual Troubleshooting 6 4 Repair and Calibration The IEPE Link LXRS is factory calibrated when it is manufactured No further calibration is required General Instructions In order to return any LORD MicroStrain product you must contact LORD MicroStrain Sales or Technical Support to obtain a Return Merchandise Authorization number RMA All returned merchandise must be in the original packaging including manuals accessories cables etc with the authorization RMA clearly printed on the outside of the package Removable batteries should be removed and packaged in separate protective wrapping Please have the LORD MicroStrain model number and serial number as well as your name organization shipping address telephone number and email Normal turn around for RMA items is 7 days from receipt of item by LORD MicroStrain Warranty Repairs LORD MicroStrain warrants its products to be free from defective material and workmanship for a period ofone 1 year from the original date of purchase LORD MicroStrain will repair or replace at its discretion a defective product if returned to LORD MicroStrain within the warranty period This warranty does not extend to any LORD MicroStrain products which have been subject to misuse alteration neglect accident incorrect wiring mis programming or use in violati
12. Overview 1 Wireless Sensor Network Overview The LORD MicroStrain Wireless Sensor Network is a high speed scalable sensor data acquisition and sensor networking system The system consists of wireless sensor interface nodes a data collection gateway and full featured user software platforms based on the LORD MicroStrain Lossless Extended Range Synchronized LXRS data communications protocol Bidirectional wireless communication between the node and gateway enables sensor data collection and configuration from up to two kilometers away Gateways can be connected locally to a host computer or remotely on local and mobile networks Some gateways also feature analog outputs for porting sensor data directly to standalone data acquisition equipment The selection of available nodes allows interface with many types of sensors including accelerometers strain gauges pressure transducers load cells torque and vibration sensors magnetometers 4 to 20mA sensors thermocouples RTD sensors soil moisture and humidity sensors inclinometers and orientation and displacement sensors Some nodes come with integrated sensing devices such as accelerometers System sampling capabilities are IEEE 802 15 4 compliant and include lossless synchronized sampling event and burst sampling streaming and data logging One gateway can coordinate many nodes of any type and multiple gateways can be managed from one computer with the Node Commander and Sensor
13. broadcast on all channels As long as the node is powered on after activating the Node Discovery feature the gateway will link to it and remember the channel setting for future node I l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l a l queries I l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l e Manually setting the node and gateway frequency channels to match is required in some applications For example when sending broadcast messages from the gateway to multiple nodes including the synchronized sampling beacon all nodes must be on the same channel as the gateway to receive the broadcast Assigning channels is also a good idea when multiple gateways are attached to one host computer or when other wireless equipment is nearby and frequency or transmission interference may occur Z LORD MicroStrain e SENSING SYSTEMS IEPE Link LXRS Wireless Sensor Node User Manual Safety Information 10 Safety Information This section provides a summary of general safety precautions that must be understood and applied during operation and maintenance of components in the LORD MicroStrain Wireless Sensor Network Throughout the manual ANSI Z535 standard safety symbols are used to indicate a process or component that requires cautionary measures 10 1 Battery Hazards WARNING A CAUTION HITI The IEPE Lin
14. burst duration and time between bursts Higher sample rates longer burst durations and shorter times between bursts equate to shorter battery life Both the sampling and transmit modes use a lot of power while the sleep mode is very low Table 10 Node Power Use The total amount of power use is largely determined by how long the node stays in sleep mode The node will automatically go into sleep mode after sampling and transmitting is completed The more time the node is in sleep state the more power is conserved For information on sampling settings see Sampling Settings on page 21 Node state Current draw Duration Sleep 100 uA Sensor warm up 29mA 15 seconds before sampling will vary between sensors d HA 1 to 150 seconds depending on sample rate Transmit varies with transmission rate 6 seconds Table 10 Node Power Use Below is an example approximation of the power use of a IEPE Link LXRS with different burst settings This chart can be used to approximate internal battery life and external node power source requirements A battery life estimation calculator is also available from LORD MicroStrain Technical Support if more application specific estimations are needed See Technical Support on page 49 Burst Time Calculated sample duration between um battery life rate kHz uf seconds bursts draw mA days 10 5 10 minutes 29373 9 do 5 f ihur 0 6957 39 10
15. configuration menu will have to be entered quickly before the timeout occurs putting the node back in a sample or sleep state 2 4 node is out of range Perform a bench test with the node and gateway in close proximity to verify they are operational For range test and installation recommendations see Range Test on page 32 The system has been tested to operate with the node and gateway up to 2km apart with clear line of sight F LORD MicroStrain ae SENSING SYSTEMS IEPE Link LXRS Wireless Sensor Node User Manual Troubleshooting Problem Possible cause and recommended solution 2 5 node is not in normal start up mode If the node status indicator shows the node booting in a mode other than the normal boot mode it can be bypassed by toggling the node ON OFF switch rapidly three times then leaving it in the ON position for normal power up In normal boot mode the communication can be established with automatic node discovery or manually once the boot process is complete and the node is in the idle state Start up mode can then be changed in the software 2 6 node is sampling Observe the node status indicator LED to determine what state it is in boot idle sample or sleep If the node is sampling it cannot be configured In Node Commander execute the Stop Node command to put the node in idle state allowing configuration to occur 2 7 node is sleeping Observe the node status indicator LED to determine what state
16. stored in the node s operating system Real Time Clock RTC a computer clock that keeps track of the current time Resolution in digital systems the resolution is the number of bits or values available to represent analog values or information For example a 12 bit system has 4 096 bits of resolution and a 16 bit system has 65 536 bits RFI Radio Frequency Interference is a disturbance in an electrical circuit due to electromagnetic induction or radiation RSSI Received Signal Strength Indication is a measurement of the transmission power in a radio signal The units are decibels per meter dBm RS232 a serial data communications protocol Sensor a device that physically or chemically reacts to environmental forces and conditions and produces a predictable electrical signal as a result Sleep a command transmitted to the node to set a node into sleep configuration Sampling the process of taking measurements from a sensor or device F LORD MicroStrain 58 SENSING SYSTEMS IEPE Link LXRS Wireless Sensor Node User Manual References Sampling Mode the type of sampling that is being utilized such as event triggered continuous or periodic The nodes have several sampling modes that employ these types of sampling Sampling Rate the frequency of sampling Single Ended electrical signals that are measured with reference to a system ground Slope When describing a mathematically linear relationship the slope is th
17. the appropriate output parameters It can also be powered by an external battery or other regulated DC supply The supply must deliver a stable voltage between 3 2V and 9 0VDC and be capable of sourcing at least 50mA Power supplies over 9VDC such as vehicle batteries can be used by installing a step down regulator External battery holders are available for the IEPE Link LXRS see Node Accessories on page 52 External power is applied through either the power supply jack or the terminal block connectors Do not connect both Observe connection polarities or the node may be damaged terminal block terminal block number 14 cno signal a power jack power jack pin signa Figure 23 External Power Connections F LORD MicroStrain SENSING SYSTEMS IEPE Link LXRS Wireless Sensor Node User Manual Powering the Node 5 5 Terminal Block Connections When inserting the leads into the terminal block ensure the lead wire is being clamped under the terminal screw and not the lead insulation If the sensor wires are a very fine gauge folding and tinning them may be useful to provide more area for the terminal screw to make contact Failure to provide adequate connection may result in faulty connections Node Pin Signal Table 5 Terminal Block Connections F LORD MicroStrain SENSING SYSTEMS IEPE Link LXRS Wireless Sensor Node User Manual Troubleshooting 6 Troubleshooting
18. 1463 I Total Samples 2035 1 Firmware 818 gt r b Memory Full 0 ost Nes an N Packet Success 100 0 7 Figure 14 Synchronized Sampling Data View a Device status Node sampling mode and gateway status are displayed in parentheses next to the device name b Node information includes node serial number and sampling statistics Right click on the node name for more menu options such as Stop Nodes c Data display of the sampled data with each channel in a column d Radio strength indicates how good the communication is between the gateway and node See Range Test on page 32 e Data file the location and size of the data file as data is added View the data in CSV format with the Open File button f View menu Select between Data Grid and Graph views g End sampling The red X is used to exit the sampling window and or end sampling Za LORD MicroStrain 26 SENSING SYSTEMS IEPE Link LXRS Wireless Sensor Node User Manual System Operation Overview Use the view menu to select the Graph view of the data Click on the node to view the graph for that node Click again to hide it Ke Base Station Com 3 Monitoring 9 39 Node 20252 Sync 9 Node 31463 Sync Node 30252 Figure 15 Synchronized Sampling Graph View a Available Nodes Click on the node to display the graph for that node Click again to hide it Right click on the node name for more menu opti
19. 4 USB Gateway Communication Za LORD MicroStrain 13 SENSING SYSTEMS IEPE Link LXRS Wireless Sensor Node User Manual System Operation Overview 3 4 Automatic Node Discovery Automatic node discovery only works in some boot up modes such as the normal boot mode When the node is set for normal boot mode and powered on the device status indicator on the node will flash rapidly and then pulse in one second intervals thereafter If any other indicator behavior is observed the node may be configured for a different mode If the node is in another boot mode it can be bypassed by toggling the node ON OFF switch rapidly three times and then leaving it in the ON position for normal power up 1 After establishing communication with the gateway right click on the gateway name in the Controller window and select Add Node gt Node Discovery lt gt CESS Monitor Mode Reverify Base Station Add Nodes Configure Add Single Node Node Discovery Scan Network Beacon Network Broadcast SEN SS Remove Base Station Figure 5 Adding a Node in Node Commander 2 Turnthe node ON with the ON OFF switch During power up the node will transmit a message with its operating frequency within a few seconds 3 When the device status indicator on the node ends the rapid flash sequence and begins pulsing at one second intervals it has completed the normal boot up sequence and is running in idle mode At this poin
20. 63171050 6307 1040 6307 1020 6307 1010 pL Node Commander Software 6301 0300 various models various models Table 8 Wireless System Equipment F LORD MicroStrain gt SENSING SYSTEMS IEPE Link LXRS Wireless Sensor Node User Manual Parts and Configurations 8 4 Warranty Information Warranty LORD MicroStrain9 warrants its products to be free from defective material and workmanship for a period ofone 1 yearfrom the original date of purchase LORD MicroStrain agrees to repair or replace at its sole discretion a defective product if returned to LORD MicroStrain within the warranty period and accompanied by proof of purchase This warranty does not extend to any LORD MicroStrain products which have been subject to misuse alteration neglect accident incorrect wiring mis programming or to use in violation of operating instructions furnished by us It also does not extend to any units altered or repaired for warranty defect by anyone other than LORD MicroStrain This warranty does not cover any incidental or consequential damages and is in lieu of all other warranties expressed or implied No representative or person is authorized to assume for us any other liability in connection with the sale of our products Some states do not allow limitations on how long an implied warranty lasts and or the exclusion or limitation of incidental or consequential damages so the above limitations and exclusions may not apply
21. Cloud software platforms Integration to customer systems can be accomplished using OEM versions of the sensor nodes and leveraging the LORD MicroStrain data communications protocol Common applications of the LORD MicroStrain Wireless Sensor Networks are wireless strain sensor measurement wireless accelerometer platforms wireless vibration monitoring wireless energy monitoring wireless environmental monitoring and wireless temperature monitoring Za LORD MicroStrain 6 SENSING SYSTEMS IEPE Link LXRS Wireless Sensor Node User Manual Node Overview 2 Node Overview The IEPE Link LXRS wireless sensor node is a specialty node designed for high speed high resolution short duration sampling from Integrated Electronics Piezoelectric IEPE type accelerometers The IEPE Link LXRS9 employs the ultra low noise small packaging features of conventional IEPE sensors to provide an excellent solution for high sensitivity vibration and shock monitoring applications such as long term machine health monitoring modal seismic and structural analysis and flight and product testing The IEPE Link LXRS accepts inputs from most IEPE sensors using the industry standard 10 32 mini coaxial connector and 2 3 mA constant current excitation It features 24 bit resolution with a 109 5 dB dynamic range 1 kHz to 104 kHz sampling rates and user selectable frequency filtering The node uses burst sampling with configurable sample rates
22. EMS IEPE Link LXRS Wireless Sensor Node User Manual System Operation Overview 3 6 Sampling Settings The IEPE Link LXRS utilizes synchronized sampling burst mode for collecting sensor data Synchronized sampling allows multiple nodes to sample simultaneously In burst mode samples are taken for a short duration at high sample rates and scheduled to repeat at fixed intervals Figure 10 Synchronized Burst Samples Sample rate burst duration and time between bursts are user configurable synchronized burst samples from 2 nodes ELELEE zoom in of sampled data within one burst e itam NBA TULA Figure 10 Synchronized Burst Samples To adjust synchronized sampling burst settings in Node Commander open the node configuration menu by right clicking on the node name and then selecting Configure gt Configure Node gt Synchronized Sampling Figure 11 Synchronized Sampling Settings The Synchronized Sampling menu includes a bandwidth calculator The bandwidth calculator describes what percentage of the system sampling capacity has been reached Figure 11 Synchronized Sampling Settings Percent of Total Bandwidth One node can be configured to consume up to 50 of the system bandwidth Sampling settings are interactive and automatically limited to stay within the node bandwidth constraint Adjusting one setting may apply limits to another The user should observe the bandwidth calculator while making wa LORD Micr
23. Hz 14 channels radiated power programmable from 0 dBm 1 mW to 16 dBm 39 mW European models limited to 10 dBm 10 mW Dimensons S mmx mmxzimm DWegm O grams 1 burst 10 minutes 2 9373mA 10 57 mW 1 burst hr 0 6957mA 2 50 mW 1 Power consumption burst 4 hrs 0 2875mA 1 04 mW 1 burst 24 hrs 0 1738mA 0 63 mW All sampling 10kHz with 5 second burst duration Power internal rechargeable 3 7 volt 650 mAh battery or external 3 2 to 9 0 volts DC 20 C to 60 C with standard internal lithium polymer battery and enclosure extended range to 40 C to 85 C with optional external battery PROHS mpaw SSOSCS SCSCSC S S S N WSDA RGD WSDA 1000 LXRS WSDA Base 102 LXRS WSDA Base 104 Compatible gateways LXRS Software NodeCommanderfor Windows XPWista 7 8 inci eU Software development kit SDK includes complete data communications protocol manual EEPROM maps and sample code OS and platform independent SensorCloud compatible FCC ID XJQMSLINK0003 ic 0 0 8505A MSLINK0003 32 usec Radio frequency RF transceiver carrier Operating temperature Table 9 Operating Specification Za LORD MicroStrain 57 SENSING SYSTEMS IEPE Link LXRS Wireless Sensor Node User Manual Specifications 9 3 Power Profile Node power use is highly dependent on the sensor connected and operational parameters such as sample rate
24. ack for charging the internal battery or externally powering the node a power on off switch a terminal block for connecting sensing devices and power and an antenna connector for attaching the node antenna The indicators on the IEPE Link LXRS include a device status indicator and a battery charge status indicator The following table describes basic indicator behavior During data acquisition the device status indicator has other advanced behaviors See Device Status Indicators on page 45 antenna connection power jack 7 NG terminal G sensor NG connector battery charging block device status mountin pina g tabs indicator indicator ONIORF both sides switch Figure 2 Interface and Indicators Indicator Behavior Node Status OFF Node battery is not currently being charged Battery charge ON bright red Node battery is charging status indicator ON dim red Battery fault condition reset by unplugging power and then plugging it back in ee 1 second pulse approximate Table 2 Indicator Behaviors Za LORD MicroStrain 9 SENSING SYSTEMS IEPE Link LXRS Wireless Sensor Node User Manual System Operation Overview 3 System Operation Overview The IEPE Link LXRS contains an internal rechargeable WARNING Lithium Polymer Li Po battery For important precautions see Safety Information on page 60 To acquire sensor data nodes are used with any LORD MicroStrain data gateway such a
25. ation Power Management gt Remove Node id Num Triggers 0 Figure 19 Range Test Menu 2 The total RSSI range for the node and gateway is 90 to OdBm The higher the value closer to zero the better but reliable communication can be achieved between 0 and 75dBm The devices may still communicate between 75 and 90dBm but could be intermittent or result in data loss Position the node where the best RSSI value is observed Short Packet Range Test Node 31463 Good Pings 9070 BadPings 0 Success Rate 100 00 96 Base RSSI 12 dBm Min 12 dBm Max 10 dBm a ff Node RSSI 12 dBm Min 12dBm Max 10 dBm i Figure 20 Range Test Statistics F LORD MicroStrain 32 SENSING SYSTEMS IEPE Link LXRS Wireless Sensor Node User Manual Node Installation 4 Connecting Sensors The IEPE Link LXRS sensor connector is a 10 32 coaxial connector common to many IEPE sensors There is one female connection port on the device enclosure see nterface and Indicators on page 9 Cables are available from the IEPE sensor manufacturers and third party coaxial cable assembly providers For example Dytran 6010A05 and Pasternack PE36520 F LORD MicroStrain 33 SENSING SYSTEMS IEPE Link LXRS Wireless Sensor Node User Manual Powering the Node 5 Powering the Node Apply only the input voltage range specified for the node in the polarity indicated Failure to do so could result in personal injury and perma
26. atures or correct operating issues Node Commander version 2 7 0 or greater can be used to update any mXRS or LXRS node or gateway firmware to the most current version Updates are found on the LORD MicroStrain website See Technical Support on page 49 for contact and website information 1 Download the LXRS Firmware Upgrade file from the LORD MicroStrain website 2 Once downloaded extract the contents of the zip file into a folder on the computer Verify there is a file with a zhex extension 3 Launch Node Commander and establish communication between the node and gateway as normal 4 Press and hold F1 on the computer keyboard While holding F1 right click the node name and a drop down menu will appear amp Base Station Com 36 H Noda412 Upgrade Firmware Figure 24 Update Node Firmware F LORD MicroStrain 46 SENSING SYSTEMS IEPE Link LXRS Wireless Sensor Node User Manual Troubleshooting 5 Release the F1 key 6 Click Upgrade Firmware and the Node Firmware Upgrade window will appear 7 Click Browse and navigate to the downloaded zhex file 8 Click Write and the upgrade sequence will begin When complete Upgrade Success will appear in the Status column Bootloader Version FW Before Upgrade FW After Upgrade Status 106 8 00 8 05 Firmware found Ready Path C VUserslb trutor Desktop mrostrain wireless frmware V2 1 0 2hex Figure 25 Upgrade
27. cator LED on the device will be off Turn the gateway or node does device on and the status indicator LED should illuminate not turn on or node 1 2 external power is off or miswired does not charge Verify the device power source is connected correctly and turned on 1 3 wrong power supply Using a power supply other than the one specified the device or an external supply that is outside of the device operating range could result in permanent damage to the device or cause it to not work properly 1 4 node internal source select switch is set incorrectly When the node is manufactured it is set to internal battery operation but it can be configured to accept an external source When set to an external source the battery cannot be charged 1 5 node battery is dead If the node power source selector is set to internal and the node will not power on or charge the node battery may need to be replaced Contact LORD MicroStrain Technical Support See Technical Support on page 49 1 6 node battery fault If the battery charge indicator on the node is only dimly illuminated when charging is attempted a battery fault condition has occurred Unplug power and then plug it back in The indicator should turn on brightly indicating charging 1 7 node or gateway is damaged If all power settings and connections have been verified and the node is still unresponsive contact LORD MicroStrain Technical Support See Technical Support
28. d first by selecting its adjacent check box A D Value A D Value A D Value Figure 7 Node Channels Menu F LORD MicroStrain 16 SENSING SYSTEMS IEPE Link LXRS Wireless Sensor Node User Manual System Operation Overview 2 To enter the channel configuration menu select the Configure button as shown in Figure 7 Node Channels Menu The channel configuration menu options change depending on the sensor type selected a Channel Label names the channel b Channel diagram describes the channel electronics and data flow c Conversion Coefficients defines the type and units of the measurement being made d Sensor Slope is the sensor sensitivity value used to convert the sensor voltage reading to engineering units This value is provided in the sensor manufacturer calibration data e Edit Presets allows users to save the conversion values for a particular sensor This is useful when the node may be used to take measurements from different sensors When the new sensor is attached the Edit Preset menu is used to save or select its conversion information f Low Pass Filter Cutoff This setting determines what sampled readings will be reported based on the frequency of the signal Any frequency above the selected setting will be omitted For best performance select a Low Pass Filter Cutoff that is no more than half of the sample rate Configuration Channel 1 uu ee b I W
29. d interface with the Node Commander software The WSDA 1000 LXRS gateway utilizes Ethernet communications and can be used with Node Commander and SensorCloud Users can also write their own programs by utilizing the LORD MicroStrain Wireless Sensors Network Software Development Kit 22 connect og IEPE sensor computer or network communication cable CC 33 ower cable as needed Pp ann l Pr di not used with USB gateways li A gateway 2 Figure 3 System Connections Za LORD MicroStrain 12 SENSING SYSTEMS IEPE Link LXRS Wireless Sensor Node User Manual System Operation Overview 3 3 Gateway USB Communication For USB gateways drivers need to be installed on the host computer These drivers are included with the Node Commander software After the software is installed the USB gateway will be detected automatically when the gateway is plugged in 1 Open the Node Commander software Bac ZNC E Node Commander 2 Make all hardware connections see System Connections on page 12 Power is applied to the gateway through the USB connection Verify the gateway status indicator is illuminated 3 Open Node Commander 4 When connected the gateway should appear in the Controller window automatically with a communication port assignment Figure 4 USB Gateway Communication If itis not automatically discovered verify the port is active e f amp Base Station Com 3 Figure
30. durations and intervals Synchronized sampling allows precise coordination with other nodes To acquire sensor data the IEPE Link LXRS is used with any LORD MicroStrain data gateway such as the WSDA Base and WSDA 1000 The LORD MicroStrain Node Commander software is used for node configuration and data collection and the optional SensorCloud web platform for data visualization and analysis User designed programs are also possible with the open source LORD MicroStrain 9 Wireless Sensor Networks Data Communications Protocol Figure 1 IEPE Link LXRS Wireless Sensor Node Za LORD MicroStrain SENSING SYSTEMS IEPE Link LXRS Wireless Sensor Node User Manual Node Overview 2 1 Components List IEPE Link LXRS sensor nodes come with the following components and options For a complete list of available configurations accessories additional system products and ordering information see Parts and Configurations on page 51 29 Description Quantity IEPE Link LXRS Wireless Sensor Node Right angle antenna fecal Removable terminal block D Powersuppyandplugadapierkt f r 1 User Manual Quick Start Guide and Calibration Cericate Table 1 Components List Za LORD MicroStrain 8 SENSING SYSTEMS IEPE Link LXRS Wireless Sensor Node User Manual Node Overview 2 2 Interface and Indicators The IEPE Link LXRS interfaces include a power input j
31. e steepness of the line that represents that relationship on a graph The equation of a straight line is y mx b where xis the x axis coordinate yis the y axis coordinate mis the slope and bis the offset Streaming Streaming is a sampling mode in which all active channels and the sensors attached to them are measured and the data acquired is transmitted to the gateway and software The data is not written to non volatile memory during streaming Streaming can either be finite have a user defined start and end time or continuous continue until the power is cycled on the node Synchronized Sampling asampling mode that automatically coordinates all incoming node data to a particular gateway This mode is designed to ensure data arrival and sequence Transmission rate the number of data packets per transmission window in seconds Depending on the sampling mode and settings it will be between 1 and 64 packets second Transmission window the time allowed for one data transmission at the automatically determined transmission rate USB Universal Serial Bus a serial data communications protocol Wheatstone Bridge an electrical circuit used to measure unknown electrical resistances WSN Wireless Sensor Network describes a distribution of sensors and data acquisition equipment that autonomously monitors environmental characteristics such as temperature pressure and strain F LORD MicroStrain SENSING SYSTEMS
32. ehavior Node Status Node battery is not currently OFF i being charged Battery Charge ON bright red Node battery is charging Status Indicator Battery fault condition reset by ON dim red unplugging power and then plugging it back in ON green Battery is fully charged Node is OFF or sleeping OFE withoscasional flash Node is sleeping with radio check intervals enabled Ten rapid flashes green Node is booting normally and sending out a status message 1 second pulse approximate Nodadsactiveand idle green Continuously ON green Node is logging or streaming data Pulses at sample rate green Node is sampling in low duty cycle Faint pulse blue hara is in synchronized sampling Device Status Pulses for each pin pode song oul ping communication requests Pulses at very high speed Node is being range tested Node EEPROM is being read or Several rapid pulses written Cur Slow posas SA Fault condition is initially applied bi ind Pulses When power Fault condition is initially applied Node is in synchronized sampling decade ON bright blue mode and is re syncing or taking a burst sample Table 6 Device Status Indicators F LORD MicroStrain i5 SENSING SYSTEMS IEPE Link LXRS Wireless Sensor Node User Manual Troubleshooting 6 3 Updating Node Firmware Under the recommendation of LORD MicroStrain Technical Support Engineers nodes can be upgraded to the latest available firmware to take advantage of new fe
33. for synchronized sampling Figure 13 Synchronized Sampling Menu a Save Location indicates where the data file will be saved on the host computer Use the Browse button to select a preferred location b Node configuration includes the node serial number sampling settings bandwidth calculation and current status Highlight any node or group of nodes and the Remove Configure and Refresh buttons become active The Configure button opens the node configuration menus to adjust settings as needed and recalculates the node bandwidth Multiple nodes can be configured together by using the Shift or Ctrl key to select them Za LORD MicroStrain 24 SENSING SYSTEMS IEPE Link LXRS Wireless Sensor Node User Manual Save Location C ProgramData MicroStrain NodeCommander Data System Operation Overview Nodes 2 Type Active Channels Sample Rate Node 30252 G Link 10G LXRS 1 512Hz Network Options Y Lossess High Capacty ofBandwidth Status 25 024 In Network 4 f 298 network configuration Mg Fl Enable Beacon on Start v Figure 13 Synchronized Sampling Menu c Lossless enables the lossless data protocol The protocol enables buffering and retransmission of data in order to provide 10096 data collection success Using this feature may increase data display latency d High Capacity reduces the transmit rates in order to optimize bandwidth and power savings among nodes with slower sample rates
34. ireless Samples Communication 7 c i A D Value bits Calibrated Value d ba e ffectve Range 51 44to 51 446 Low Pass Filter Cutoff 3dB pt f 5 000 Hz Figure 8 Channel Setup F LORD MicroStrain j SENSING SYSTEMS IEPE Link LXRS Wireless Sensor Node User Manual System Operation Overview 3 5 1 Sensor Conversion Values Because the wireless sensor system is digital the analog voltage readings from the sensor are converted into a digital equivalent value based on the volt to bit scale of the internal analog to digital voltage converter A D converter A D value can be read directly or further converted to engineering units by applying conversion values and a conversion formula Sensor readings can be displayed and recorded in A D value bits or engineering units For the IEPE Link LXRS the engineering unit is g force The conversion value is obtained from the sensor manufacturer and is typically referred to as sensitivity in units of mV g milli volts of sensor output per g force it experiences For example a sensor with an operating range of 50g may have a sensitivity of 99 8mV g l l l l l l l l i i n order to report accurate readings many sensors require calibration l l a F Pa x l Calibration coefficients normalize the sensor output to a known reference device and are often expressed in the conversion values Calibration accounts l PARE l for the variations between sensor e
35. itis boot idle sample or sleep If the node is sleeping it cannot be configured In Node Commander execute the Stop Node command to put the node in idle state allowing configuration to occur 2 8 gateway or node is damaged Verify all connections power and settings If available try installing alternate nodes and gateways one at a time to see if the faulty device can be identified If no conclusion can be determined or to send a device in for repair contact LORD MicroStrain Technical Support See Technical Support on page 49 3 1 no communication to node or gateway 3 DATA ACQUISITION Verify connections and power to the node and gateway Verify they are powered on and communicating in the software Enter a configuration menu to verify that the node can be accessed 3 2 sampling settings are incorrect sensor data is missing or incorrect Za LORD MicroStrain 43 SENSING SYSTEMS IEPE Link LXRS Wireless Sensor Node User Manual Troubleshooting Problem Possible cause and recommended solution If the sampling mode rate or duration are not performing as expected enter the node configuration menu and verify the sampling settings 3 3 sampling has not started If sampling is occurring the mode will be displayed next to the node name in Node Commander The node device status indicator will also be flashing the sampling mode code If the node is not sampling activate it in the software or with a sample on s
36. k LXRS Wireless Sensor Node contains an internal rechargeable Lithium Polymer Li Po battery Li Po batteries are a fire and explosion hazard Do not store A or operate the node at temperatures above 212 F 100 C Do not disassemble short circuit crush puncture or otherwise misuse the battery Ee When recharging the node internal battery use only the power supply specified for node charging and follow the D instructions See Charging the Node Battery on page 37 Applying a voltage above the input range may result in dangerous battery conditions or cause permanent damage tothe node HES Li Po batteries contain toxic chemicals that are harmful to humans and the environment Disposal is subject to federal and local laws Do not discard the battery or the node in the trash Follow proper battery disposal protocol or contact LORD MicroStrain Technical Support for information on extracting the battery or returning the product for proper recycling and disposal wa LORD MicroStrain 60 SENSING SYSTEMS IEPE Link LXRS Wireless Sensor Node User Manual Safety Information 10 2 User Configurable Power Settings The IEPE Link LXRS Wireless Sensor Node can be powered by either the internal battery or an external source There is user accessible switch to select the source The default setting for this switch is for internal battery operation and charging See Selecting the Power Source on page 34 W 9 Con
37. l used in the wireless sensor network NIST The National Institute of Standards and Testing is a nationally accepted organization for testing and calibration of technological devices Node The node is the wireless transceiver that the sensor s are connected to providing communication with the gateway The G Link LXRS V Link LXRS and SG Link LXRS are all nodes manufactured by LORD MicroStrain Node Tester board The Node Tester board is a device designed by LORD MicroStrain that can be plugged into nodes to test functionality Za LORD MicroStrain 64 SENSING SYSTEMS IEPE Link LXRS Wireless Sensor Node User Manual References Offset When describing a mathematically linear relationship the offset is the value where the line that represents the relationship in a graph crosses the y axis The equation of a straight line is y mx b where xis the x axis coordinate yis the y axis coordinate mis the slope and bis the offset Packet unit of sampled data Ping A byte is transmitted by the gateway to the node and the node responds by echoing the byte indicating communication exists between them PGA A Programmable Gain Amplifier is an electronic device used to amplify small electrical signals Range Test a continuous string of pings used to validate communication between the gateway and the node over distance and obstruction Read Write EEPROM commands transmitted to the node to read or write parameters
38. lements l l l Conversion Formula The default formula assumes a linear relationship between the A D value bits and engineering units and is expressed mathematically as y mx b where yis the engineering units at a given point measurement m is the slope of the line that represents the linear ratio x is the A D value at a given point and bis the fixed zero load offset of the sensor Slope The slope is the ratio of A D value bits to engineering units EU that is used to convert the sensor measurements or bits per EU The slope conversion value will vary depending on the engineering units desired For example if the units are a measurement of acceleration in units of g force the desired slope conversion would describe how many bits equal unit of g force bits g Mathematically the slope is min the formula y mx b Offset The offset value is the starting output value of the sensor with no load applied Mathematically the offset is b in the formula y mx b Because IEPE accelerometers are AC coupled there is no offset value Za LORD MicroStrain 18 SENSING SYSTEMS IEPE Link LXRS Wireless Sensor Node User Manual System Operation Overview Effective Range The effective range is the calculated sensor measurement range in engineering units EU The effective range is dependent on the slope offset and resolution of the node The effective range is the number of A D values per EU unit slope multiplied by the total numbe
39. necting an external power source when the node is set to F3 internal power could result in injury or permanent node damage For details on how to adjust the switch setting see Connecting an External Power Supply on page 38 e Ifthe node is set to use an external source and the charging power supply is plugged in it will power the node from the power supply and not charge the battery It will continue to use the internal battery e Ifthe node is set to internal and an external power supply other than the one used for charging is plugged in several things could happen If it is a power supply that is in the operating range of the charging circuit it may charge the battery If itis below the range of the charging circuit nothing will happen If the applied voltage is above the range of the charging circuit damage to the node will likely occur and personal injury may result e When under battery operation there is a limit to how much current the node can provide to sensors If the node is in an over current condition it will shut off until the cause is removed Using an external power source for the node or sensor can mitigate this issue Za LORD MicroStrain 61 SENSING SYSTEMS IEPE Link LXRS Wireless Sensor Node User Manual References 11 References 11 1 Reference Information Many references are available on the LORD MicroStrain website including product user manuals technical notes and quick start guides These documents a
40. nent damage to the node For important safety considerations see Safety Information on page 60 The node can be powered with the internal battery or an external source These sources cannot be used simultaneously When the node is manufactured the switch is set to operate using the internal battery External battery holders are available for the IEPE Link LXRS and can be used to extend battery operating capacity and duration For more information see Node Accessories on page 52 5 1 Selecting the Power Source There is user accessible switch inside of the node to select the power source The following steps describe how to change between internal battery operation and an external power source The IEPE Link LXRS contains an internal rechargeable Lithium Polymer Li Po battery For important precautions see Safety Information on page 60 The electronics within the node are sensitive to static and NO TICE moisture Do not touch the internal circuitry or expose to liquids Verify the node power switch is OFF and the power supply disconnected before servicing The IEPE Link LXRS is susceptible to damage and or disruption of normal operation from Electrostatic Discharge ESD For important precautions see Safety Information on page 60 F LORD MicroStrain a SENSING SYSTEMS IEPE Link LXRS Wireless Sensor Node User Manual Powering the Node Verify the node power switch is in the OFF position and no exte
41. ns see Safety Information on page 60 I l l l l Touching connected sensors while acquiring data may induce noise on ET x s l Sensitive sensor signals and is not recommended I l l l 1 Turn the node power switch off and plug the node power supply into the node and into a 120 240VAC 50 60Hz AC power source Use only the power supply specified for the node Use the supplied power plug adapters as needed 2 Verify the charge indicator is red and on brightly indicating charging If it is only on dimly a battery fault has occurred Reset the node by unplugging power and then plugging it back in The indicator should now turn on brightly Continue charging until the indicator turns green to indicate a completed charge Charging takes approximately 6 8 hours from a full discharge charge indicator Figure 22 Node Charging F LORD MicroStrain B SENSING SYSTEMS IEPE Link LXRS Wireless Sensor Node User Manual Powering the Node 5 4 Connecting an External Power Supply Apply only the input voltage range specified for the node in the polarity indicated Failure to do so could result in personal injury and permanent damage to the node For important safety considerations see Safety Information on page 60 When the internal node switch is set for external power the node may be directly powered by the power supply specified for charging the node or another regulated AC to DC power supply with
42. oStrain 2 SENSING SYSTEMS System Operation Overview IEPE Link LXRS Wireless Sensor Node User Manual adjustments to sampling settings to find the balance of sample rate burst duration and burst intervals most suitable for the application Power RF 1nfo Burst Sampling Duration Per Burst h sec Time Between Bursts 1 e Percent of Total Bandwidth 1 56 Figure 11 Synchronized Sampling Settings The following considerations should be made when determining sampling settings e Maximum burst length is determined by sample rate The higher the sample rate the shorter the burst lengths can be Table 3 Sample Rate and Burst Duration Sample rate Maximum burst duration seconds Table 3 Sample Rate and Burst Duration F LORD MicroStrain SENSING SYSTEMS 22 IEPE Link LXRS Wireless Sensor Node User Manual System Operation Overview e Increasing the sample rate and duration or decreasing the time between bursts reduces the system bandwidth and therefore the number of nodes that can be networked to one gateway Table 4 Example of Node Network Limits Time between Maximum Sample rate Burst duration number of samples kHz seconds i nodes per minutes gateway Table 4 Example of Node Network Limits e Increasing the sample rate and duration or decreasing the time between bursts increases the duration
43. ometers apart In order to accomplish this the node must be installed in a manner that optimizes the wireless transmission The IEPE Link LXRS operates at a 2 4GHz transmission frequency and comes standard with a right angle 44 wave rubber whip antenna with an omni directional radiation pattern The antenna has a joint in the middle that allows it to be rotated and aimed Using any other antenna than what is included with the node will void FCC compliance The best method for ensuring optimal radio communication is to conduct an RF survey of the installation site This is easily accomplished in Node Commander by using the range test feature to quantify the radio signal strength RSSI in various scenarios See Range Test on page 32 for instructions on using Node Commander for measuring RSSI The following bullets are general guidelines for maximizing transmission range e Establish Line of Sight LOS between the node and gateway antennas as best as possible Try to avoid obstructions between the antennas such as buildings terrain vegetation or other physical barriers Increase the mounting height of the node or antenna if it allows a clearer LOS path to the gateway e Minimize Radio Frequency Interference RFI such as other equipment antennas especially those operating in the same frequency range This includes other nodes If other antennas are required nearby mount them at different heights to minimize interference Additionally
44. on of operating instructions furnished by us It also does not extend to any units altered or repaired for warranty defect by anyone other than LORD MicroStrain Non Warranty Repairs All non warranty repairs replacements include a minimum charge If the repair replacement charge exceeds the minimum LORD MicroStrain will contact the customer for approval to proceed beyond the minimum with the repair replacement Za LORD MicroStrain 45 SENSING SYSTEMS IEPE Link LXRS Wireless Sensor Node User Manual Troubleshooting 6 5 Technical Support There are many resources for product support found on the LORD MicroStrain website including technical notes FAQs and product manuals http www microstrain com support overview aspx For further assistance our technical support engineers are available to help with technical and applications questions Technical Support sensing support LORD com Phone 802 862 6629 Toll Free 800 449 3878 Fax 802 863 4093 SKYPE microstrain wireless support Live Chat is available from the website during business hours 9 00 AM to 5 00 PM Eastern Time US amp Canada F LORD MicroStrain SENSING SYSTEMS 49 IEPE Link LXRS Wireless Sensor Node User Manual Maintenance 7 Maintenance There are no user serviceable parts on the IEPE Link LXRS F LORD MicroStrain 50 SENSING SYSTEMS IEPE Link LXRS Wireless Sensor Node User Manual Parts and Configurations 8
45. on page 49 Za LORD MicroStrain All SENSING SYSTEMS IEPE Link LXRS Wireless Sensor Node User Manual Troubleshooting Problem Possible cause and recommended solution 2 1 node or gateway has no power 2 COMMUNICATION Verify the node and gateway have power applied and applicable power switches are on Power is indicated on both devices by a no communication to status indicator LED the gateway or node 2 2 gateway has no communication with the computer Verify gateway communication in the software Check remove and reconnect communications and power cables as applicable e For serial gateways verify the COM port setting e For USB gateways verify the drivers are installed on the computer included with Node Commander and that the software has had sufficient time to detect it For Ethernet gateways use Live Connect to verify communications on a DHCP network Check that the extended timeouts are enabled in the Node Commander Edit gt Preferences menu under Devices Once communication has been established the network configuration can be changed 2 3 node cannot be configured Observe the node status indicator LED to determine what state it is in boot idle sample or sleep If the node is sampling or sleeping it cannot be configured In Node Commander execute the Stop Node command to put the node in idle state and allow configuration to occur If the user inactivity timeout is set very low the
46. ons such as stop nodes and save stream b Axis range Select the X axis width and Y axis zoom percentage or use the Auto check box for automatic scaling c Graph the node graph shows the sampled data Each active channel is displayed as a different color The X axis is time in seconds and the Y axis is the A D value bits Right click on the graph for additional menu options such as View Graph Key Pan Zoom Pause and Remove Graph d View menu Select between Data Grid and Graph views e Data file The location and size of the data file as data is added View the data in CSV format with the Open File button f End sampling The red X is used to exit the sampling window and or end sampling F LORD MicroStrain zi SENSING SYSTEMS IEPE Link LXRS Wireless Sensor Node User Manual System Operation Overview 3 8 Data Display and Processing Data collected through Node Commander can be automatically ported to the LORD MicroStrain SensorCloud web platform for near real time display monitoring data storage and analysis Figure 16 Data Visualization and Analysis SensorCloud is based on cloud computing technology and is designed for long term collecting and preservation of data Features include time series and visualization graphing automated alerts and data interpretation tools such as data filtering statistical analysis and advanced algorithm development with the integrated MathEngine interface Le
47. r of A D values minus the offset if applicable The conversion values are entered through the Node Commander software channel Configuration menu see Sampling Settings on page 21 and saved in the node memory F LORD MicroStrain 19 SENSING SYSTEMS IEPE Link LXRS Wireless Sensor Node User Manual System Operation Overview 3 5 2 Saving Sensor Profiles The presets feature allows users to save the conversion values for a particular sensor in the configuration menu This is useful when the node may be used to take measurements from different sensors When the new sensor is attached the Edit Preset menu is used to save or select its conversion information Figure 9 Sensor Presets 1 Select the Edit Presets button 2 To add an new node leave the Select Presets drop down menu at Add New a Name the node in the Title field b Enter the sensor sensitivity in the mV g field c Select the Add Preset to save the configuration 3 For already saved nodes select the node title from the Select Presets menu 4 Select the Close button to exit Samples Wireless Samples bits Communication bits Units Conversion Coefficents Select Preset Add New Sensor Slope ous cms NG Edit Presets J Effestiva gange 51 44 to 51 446 Title sensor 37 mv G 102 6 Low Pass Filter Cutoff 308 pt Figure 9 Sensor Presets Za LORD MicroStrain 20 SENSING SYST
48. re continuously updated and new applications are added They may provide more accurate information than printed or file copies Document Where to find it Node Commander Software User Manual http www microstrain com support docs SensorCloud Overview http www sensorcloud com system overview Product Datasheets http www microstrain com wireless sensors Product Manuals and Technical Notes http www microstrain com support docs Product Application Notes http www microstrain com applications NIST Calibration Procedures http www nist gov calibrations ASTM Testing Procedures http www astm org Standard standards and publications html Table 11 Related Documents Za LORD MicroStrain 62 SENSING SYSTEMS IEPE Link LXRS Wireless Sensor Node User Manual References 11 2 Glossary These terms are in common use throughout the manual A D Value the digital representation of the analog voltages in an analog to digital A D conversion The accuracy of the conversion is dependent on the resolution of the system electronics Higher resolution produces a more accurate conversion ASTM The Association of Standards and Testing is a nationally accepted organization for the testing and calibration of technological devices Base Station The base station is the transceiver that attaches to the host computer and provides communication between the software and the node s It is also referred to as a gateway Bits
49. rnal power is applied 2 Remove the node cover screws with a 0 05 hex head wrench 3 Use a small flat head screwdriver to push the recessed switch fully to the desired position as indicated in Figure 21 Power Source Selection The figure shows the node configured for an external power source 4 Oncethe setting is selected fasten the node cover back in place Node power switch Power source selector switch INTERNAL BATTERY lt gt EXTERNAL Switch position Figure 21 Power Source Selection Za LORD MicroStrain 35 SENSING SYSTEMS IEPE Link LXRS Wireless Sensor Node User Manual Powering the Node 5 2 Using the Internal Node Battery The IEPE Link LXRS contains an internal rechargeable WARNING Lithium Polymer Li Po battery For important precautions see Safety Information on page 60 When the internal node switch is set for internal power the node is powered by a rechargeable 650mAH lithium polymer battery The battery is not user serviceable For additional IEPE Link LXRS power specifications see Power Profile on page 58 F LORD MicroStrain 36 SENSING SYSTEMS IEPE Link LXRS Wireless Sensor Node User Manual Powering the Node 5 3 Charging the Node Battery Use only the power supply specified for the node to charge the battery Using a power supply above the rated voltage could cause personal injury and permanent damage to the node For important safety consideratio
50. s the WSDA Base 10x LXRS or WSDA 1000 LXRS and a software interface LORD MicroStrain has two software programs available for the Wireless Sensor Network SensorCloud and Node Commander SensorCloud is a web based data collection visualization analysis and remote management platform based on cloud computing technology Node Commander is used for configuring nodes viewing and saving data and is included with all data gateways In this section hardware and software setup is described including an overview of the Node Commander software menus required to configure a sensor connected to the node and begin data acquisition It is intended as a quick start guide and is not a complete demonstration of all system or software features and capabilities Refer to the Node Commander User Manual included with the software for more information More information on SensorCloud can be found on the LORD MicroStrain website see References on page 62 l l l l l l l l To maximize operating time it is recommended that the IEPE Link LXRS internal battery be fully charged before installation If fully discharged it takes approximately 6 to 8 hours to achieve a full charge For l l charging instructions see Charging the Node Battery on page 37 l l Za LORD MicroStrain 10 SENSING SYSTEMS IEPE Link LXRS Wireless Sensor Node User Manual System Operation Overview 3 1 Software Installa
51. signals in which they are paired together as a differential pair and measured with reference to each other only This method makes the pair less susceptible to electrical noise EMI Electromagnetic Interference is inductive or radiated disturbance that can create signal degradation on electrical signals including loss of data ESD Electrostatic Discharge is the sudden flow of electricity that can occur between to charged objects of different potential that come in contact or in close proximity of each other Static electricity is a common source of ESD Firmware the code that is programmed onto a microcontroller or similar device in an embedded system that includes device operation commands conditions memory allocation and many other tasks Gateway The gateway is a transceiver that attaches to the host computer and provides communication between the software and the node s It is also known as a base station Host computer The host computer is the computer that orchestrates command and control of attached devices or networks LED Light Emitting Diode is an indicator light that is used in electronic equipment LOS Line of Sight is used in radio communications to describe the ideal condition between transmitting and receiving antennas in a radio network As stated it means they are in view of each other with no obstructions LXRS Lossless Extended Range Synchronized is the LORD MicroStrain data communications protoco
52. t the node should be listed in the Controller window and scanning can be stopped by selecting the Stop button in the F LORD MicroStrain 14 SENSING SYSTEMS IEPE Link LXRS Wireless Sensor Node User Manual System Operation Overview Node Discovery window Additional node information can be viewed by selecting the symbol next to the node name Figure 6 Node Discovery va LORD MicroStrain iS SENSING SYSTEMS IEPE Link LXRS Wireless Sensor Node User Manual System Operation Overview 3 5 Channel Configuration Node channels are configured for the sensor connected to it The sensor settings are stored in the node memory for that channel Only the channels and configuration options that are available on the type of node being used will be available in the configuration menus 1 To enter the configuration menu right click on the node name and select Configure gt Configure Node The Channels tab displays channel options available for the current node a Channel Enabled indicates the channel number The check box is used to enable the channel and select it for sampling The icon next to the check box describes the channel type which is intrinsic to the node being used b Current channel configuration The data output units input and label describe how the channel is currently configured c Configure Select the channel Configure button to change the channel parameters The channel must be enable
53. tart up boot sequence 3 4 sensor is not connected correctly Verify sensors connections and wiring For non standard connections contact LORD MicroStrain Technical Support See Technical Support on page 49 3 5 sensor channel not configured correctly Verify that the sensor is configured on the correct channel and has been enabled for data acquisition 3 6 sensor calibration is invalid If possible perform a field verification of the sensors by applying known loads and comparing the measured values In the channel configuration settings verify that the sensor channel units are selected correctly Verify that the calibration value slope is correct Verify that all parameters were written to the node channel 3 7 sensor requires more warm up time When taking samples with the IEPE Link LXRS the sensor is turned on 15 seconds in advance of sampling to allow the sensor time to warm up and settle Settling time may vary between sensors and sensor manufacturers If any performance degradation is observed between sensors it may be necessary to adjust the warm up internal If this is suspected contact LORD MicroStrain Technical Support for instructions see Technical Support on page 49 Za LORD MicroStrain a SENSING SYSTEMS IEPE Link LXRS Wireless Sensor Node User Manual Troubleshooting 6 2 Device Status Indicators The following is a complete summary of the IEPE Link LX RS status indicators Indicator B
54. the node is in sample or transmit states and therefore reduces battery life see Power Profile on page 58 In burst mode it may take many minutes to transmit all of the burst data Total transmit time depends on the amount of sampled data based on sample rate and burst duration and the transmit rate Transmit rate is automatically set in Node Commander depending on the time available between samples more time slower transmission rates As the data is received by the gateway it will update in the software but does not represent real time acquisition Za LORD MicroStrain 23 SENSING SYSTEMS IEPE Link LXRS Wireless Sensor Node User Manual System Operation Overview 3 7 Synchronized Sampling To start a sampling session nodes can be selected individually or as a group When selected as a group they will all be set to the same sampling mode Right click on the node or group of node names and select Sample The menus are different depending on which method is selected Ke Base Station Com 3 s w 5 19 Node3ldi Synchronized Sampling gt Low Duty Cycle Trigger Datalogging Download Triggers Figure 12 Starting a Sampling Session When a synchronized sampling session is started the sampling menu appears and includes settings to enable optional sampling features configure nodes and specify where the data is saved The built in bandwidth calculator displays the total bandwidth used by the nodes selected
55. the specific node frequency is selectable within its operational range using the Node Commander software Set the devices to different transmission frequencies e Minimize Electromagnetic Interference EMI such as that generated by power transmission equipment microwaves switching power supplies and other electromagnetic sources e Metal Objects in close proximity to the node antenna especially ferrous metals such as steel and iron can be problematic for wireless communications The larger the object the greater the influence If mounting the node on metal or near metal objects in unavoidable the antenna can be mounted remotely with an antenna cable The connector on the antenna is male reverse polarity SMA male RPSMA so a male to female RPSMA cable would be required Za LORD MicroStrain 31 SENSING SYSTEMS IEPE Link LXRS Wireless Sensor Node User Manual Node Installation 4 24 Range Test After establishing communication between node and gateway use the range test in Node Commander to monitor the signal strength and optimally position the node gateway and antennas for installation Maximum achievable range is determined by the gateway and node power settings found in the device Configure menu and is highly dependent on the physical environment surrounding the devices 1 Right click on the node header and select Communicate gt Range Test Communicate Configure Stop Node Load Node Inform
56. tion To install Node Commander on the host computer insert the software CD into the host computer and follow the on screen prompts The Node Commander software includes hardware drivers required for use with USB gateways Once installed the software will automatically detect and configure any USB gateways that are plugged into the host computer F LORD MicroStrain 11 SENSING SYSTEMS IEPE Link LXRS Wireless Sensor Node User Manual System Operation Overview 3 2 System Connections To acquire sensor data the following components are needed 1 user supplied external sensor 2 IEPE Link LXRS wireless sensor node 3 LORD MicroStrain data gateway 4 local or networked host computer with access to the data acquisition software such as Node Commander and SensorCloud The selection of sensors gateways and software is application dependent but the basic interfaces are the same For a connections overview refer to Figure 3 System Connections Nodes will communicate with any gateway Gateways with analog outputs can be connected directly to standalone data acquisition devices for data collection however system configuration will still occur through a digital communication interface Communication protocols between the gateway and host computer vary depending on which model gateway is used For example the WSDA Base 10x LXRS gateway utilizes local serial connections to the host computer such as RS232 and USB an
57. to the original customer Terms and Conditions of Sale Please refer to the LORD MicroStrain website Support page for complete Terms and Conditions of product sales Terms and Conditions of Service Please refer to the LORD MicroStrain website Support page for complete Terms and Conditions of product service Trial System To enable customers to try our products risk free LORD MicroStrain offers a 30 day return policy on the purchase of a starter kit In order to take advantage Za LORD MicroStrain 54 SENSING SYSTEMS IEPE Link LXRS Wireless Sensor Node User Manual Parts and Configurations of this offer a purchase order or payment for the starter kit is required when the order is placed If the product is not suited to the application the product may be returned within 30 days from the date of receipt for a full refund excluding shipping and handling as long as the product is unaltered and undamaged Items can only be returned after LORD MicroStrain has issued an Return Material Authorization RMA Items must be packed to withstand shipping sent via freight and pre paid LORD MicroStrain will inspect the items returned and issue a refund or credit once the items have been examined and are deemed to be unaltered or undamaged Non standard or custom products may only be returned with approval and a re stocking penalty may be assessed A 30 Day Return must be initiated by receiving a RMA from LORD MicroStrain
58. veraging the open source API SensorCloud can also be used to collect data from other LORD MicroStrain sensor products or third party systems Users can also upload already collected data into SensorCloud More information about SensorCloud can be found on the LORD MicroStrain website see References on page 62 Frequency vs Log Amplitude Figure 16 Data Visualization and Analysis wa LORD MicroStrain 28 SENSING SYSTEMS IEPE Link LXRS Wireless Sensor Node User Manual System Operation Overview 3 9 Sensor Data Files Data acquired from Node Commander is stored in CSV format and can be opened with Microsoft Excel Quattro Pro Open Office or other CSV editors and spreadsheet programs The files can be found in the default directory or the location specified at the beginning of sampling as applicable The default directory is C ProgramData Microstrain NodeCommander SampledData Edit View Explore Data Directory i Upload Data to SensorCloud Exit 8 39 Node 372 Downloaded Triggers 23 Libraries Ji Sampled Data 2 Streaming 2 19 2014 323 PM Filefolder I Computer E Local Disk C ExBle ee Exitos ew Tool Help Organize v R Open Print Burn New folder e Favorites Name Si Date modified Type Size BE Desktop i Master 09 30 2013 T19 46 08 csv 9 30 2013346 PM Microsoft Office E 237 KB
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