User manual - CITI
Contents
1. AO device firmware needs to be updated after the change of a sensor The firmware will be provided to you along with the replacement sensor or sensor board as a binary file For loading this file to the device refer to Section 5 5 Loading binary file to the VESNA AQ device Whenever a change in the device firmware will be needed an appropriate binary file will be provided to you by JSI team to be loaded to your device To load a binary file to the VESNA AQ device you will need a standard USB to serial cable connector as depicted in Figure 18 If you are using Windows 7 or higher the driver for the cable should be installed automatically NI PN Figure 18 USB to serial connector After you plug the cable in your computer you should see if the cable is set properly in the Control Panel gt Device manager under Ports COM amp LPT as depicted in Figure 19 CJ o amp x File Action View Help tes mid Bek E NG 4 4 HribarJernej 3B Batteries JE Computer va Disk drives amp Display adapters lt j DVD CD ROM drives 5 Human Interface Devices ca IDE ATA ATAPI controllers aj Imaging devices lt Keyboards A Mice and other pointing devices amp Monitors x Network adapters 5 Other devices I Ports COM amp LPT 4 Prolific USB to Serial Comm Port COM14 E Processors Sound video and game controllers JE System devices Universal Serial Bus controllers dek WSD Print Provider Figure 19 Device manag2. LED signals With the green LED indicator on the bottom of the device next to the micro USB power socket and the power switch the device is indicating several operating modes summarized in Table 2 Setup mode while the device is preparing for operation green LED is constantly turned on It can take from few seconds to one minute for the device to finish setup If the setup mode is not finished after 1 minute then it is better to power the device off and on again Normal operation mode when the device is functioning normally and is prepared to acquire air guality samples the LED indicator is blinking whit short blinks in intervals of approximately 3 seconds Low battery normal operation when battery level drops under 20 and the device is in normal operation mode the LED indicator is blinking with short blinks with freguency of approximately 3 Hz 3 times per second Charging mode when the device is connected to the USB power the battery charger is enabled The LED indicator is blinking with long pulses with the freguency of approximately 2 5 Hz The battery switch should be switched to the left as depicted in Figure 3 to enable battery charging If battery switch is not switched to the left battery is not charging and device is operating normally from USB power without using energy stored in batteries Setup mode Normal mode Low battery normal operation mode Charging mode Table 2 Device LED signals 3 IJS AQ App the
3. VESNA AQ Air Quality Personal Sensor Unit has been purposely developed for the air quality monitoring in the FP7 CITI SENSE project It is battery powered device a battery pack consisting of 3 AA size rechargeable batteries in an ABS plastic casing equipped with gas sensors for NO O and CO on an Alphasense 3 sensor AFE A4 board two temperature sensors a relative humidity sensor and an accelerometer For the gas sensors there are three round holes on the top front part of the casing see Figure 1 For proper operation these sensors should not be blocked or obstructed in any way Also they should not be disposed to water or very high humidity nor to excessive gaseous shocks e g automotive exhaust Figure 1 VESNA AQ device The device connects to an Android smartphone with a custom developed mobile app via Wi Fi connection Data is stored on the smartphone no storage for data enabled on the device itself where some basic visualization is supported in the mobile app but it is also periodically or upon request depending on settings sent to the remote server for analysis post processing and advanced visualization The configuration of settings is explained in Section 3 The basic device specifications are summarized in Table 1 Dimensions W x Lx D 100 mm x 210 mm x 32 mm 270g appox Battery pack 3 6 V 2850 mAh NiMh Expected autonomy Table 1 Device specifications 2 Using VESNA AQ device 2 1 Powering on the VESNA
4. a simple website which allows you to download the measurements that you posted to the server and is not part of the JS AQ App The website is located at the address http sms ijs si videk measurements html and is depicted in Figure 11 It provides two fields whose values get translated through the WEB API for data acquisition In the first field i e node name you enter the name of the unit you are interested in The information about the name of the unit can be obtained from the IJS AQ App PAIR tab The number is the same as the access point number for instance in Figure 11 the access point name is CITI IJS14 For access point number below 10 for instance CITI IJS9 the node name is CS009 The second field is used to limit the number of requested measurements The default is 100 000 but one can chose numbers from 1 on If selected settings are OK the response to clicking on the Submit button will be an option to download a CSV file containing requested measurements e C D sms ijs si videk measurements html Node Name C8014 Limit the number of results 100000 Submit Figure 11 Downloading collected measurements 4 Disassembly of VESNA AQ unit In case you need to perform any maintenance on the device you can do so according to following instructions but also feel free to contact the JSI team for further instructions if unsure Typically you may need to open the device to change a gas sensor or a board with gas sensors in the
5. mobile app for connecting VESNA AQ device This section describes the mobile app IJS AO App developed for Android smartphones needed for collection of data from the VESNA AO device basic visualization and the transfer of data to the remote server via the WEB data download API In particular this section covers the installation of the app the first time connection of the VESNA AO device and IJS AO App collection of measurements the data overview tab the context description tab posting of data to the remote server and error log tab At the end of the section a simple WEB API for data acguisition is also described 3 1 Installation The installation of the IJS AO App apk file which is not obtained through Google Play Store reguires a file system explorer which in turn can be obtained for free from the Google Play Store i e https play google com store apps details id com estrongs android pop amp hl en 1 Next you need to allow the installation of apps from unknown sources Go to settings gt security and put a tick at Unknown sources 2 Now download the apk to the phone memory locate it using the file system explorer and run it This will install the app on the phone 3 After the installation find among your apps the app named IJS AQ App and run it The icon of the app is depicted in Figure 4 Figure 4 IJS AO App icon 3 2 First time connection context setting and collection of measurements When running the app for the f
6. uploading only via Wi Fi connections when in the range of a known WiFi AP For the remote server you should insert the URL http sms ijs si videk api php and click Set URL Then you can post measurements There is also an option to clean up the posted or all measurements if you do not need them anymore locally NOTE If you discard posted or all measurements those measurements can no longer be recovered There is NO UNDO to this function lk Saving screenshot es ee JSI AO App a SensorLab PAIR DATA POST crx LOG Use Wi Fi connection Use GPRS connection Use any internet connection type Server URL http Set URL Post measurements Discard posted measurements Discard all measurements Figure 9 POST tab 3 5 Error logging The last tab is LOG tab It is used to log events and activities and helps with identifying any possible unexpected behavior In this tab there is also an option to export collected measurements to local on the smartphone text file with a given name oo ak JSI AQ App z SensorLab PAIR DATA POST crx LOG Clear Log 26 06 10 06 28 info Cannot dispatch gt Conn type selected to mobile but connection is 26 06 10 07 45 info Cannot dispatch gt Conn type selected to mobile but connection is Filename data_export txt Export data to file Figure 10 Log tab 3 6 Access to posted data through the web This subsection describes
7. 0 2K 0x800 2K Ox800 2K 0x800 2K 0x800 2K 0x800 2K 0x800 2K JOOORO000000 JOOOOOOOOOGO 1 Legend Protected na Je Figure 26 Selecting the correct target UnProtected Close gt Next select download to device and make sure that other settings are the same as shown in Figure 27 Select the correct downloaded binary file Binary files are provided by the JSI team Click next and downloading to the device should begin Erase e All Selection al Download to device Download from file 7 D GIT vesna drivers VESNAD riversDemo drivers demo s19 l Erase necessary pages No Erase Global Erase h 8000000 Jump to the user program Optimize Remove some FFs IV Verify after download Apply option bytes El Upload from device es Enable Disable Flash protection Eg READ PROTECTION Ei C Edit option bytes a e e NEO Figure 27 Select the binary file If downloading the binary file was successful you should see a window as shown in Figure 28 lt 2 Flash Loader Demonstrator e goju Target STM32 High density 512K Map file STM32_High density_512K STmap Operation DOWNLOAD File name D GIT vesna drivers WESNADriversD emo drivers_demo s19 File size 121 30 KB 124216 bytes Status 121 30 KB 124216 bytes of 121 30 KB 124216 bytes Time 00 01 35 Download operation fin
8. AQ device To start using the VESNA AO device the power switch has to be slid to the ON position The power OFF position is shown in Figure 2 and power ON position is depicted in Figure 3 Power switch Micro USB connector Green LED indicator Figure 2 VESNA AO device switched off 2 2 Device charging Before the first use the device should be fully charged The device can be charged through a micro USB connector on the bottom side between the green LED and the power switch For charging the power switch has to be slid to the ON position as depicted in Figure 3 If the device is plugged in a charger it is operating in both battery switch positions but it is charging only when the power switch is ON When the device is connected to a USB power the green LED is blinking with a period of 0 5 seconds The time needed to fully charge the batteries is around 10 hours The best way to charge it is to leave the device connected to a charger over the night NOTE There is no indication or stop condition for charging so it is better not to leave the device connected to the power for more than 10 hours The device is functioning normally during the charging period Ouick charging guide Connect a micro USB power cable not supplied to the device Slide the power switch to the ON position as shown in Figure 3 Wait for 10 hours Disconnect the device Use it Figure 3 VESNA AO device prepared for charging 2 3 Status
9. Entering the context 3 To start collecting measurements go to the PAIR tab and choose the period of data sampling The period can be selected from a predefined set of 5s 30s 1min 5min 3 3 Data overview The tab DATA is used to visualize the data which are stored locally on the smartphone Simple graphs of subsequent samples can be drawn for each of the supported sensors cf Figure 8 Note the x axis is merely giving a sequential number of measurement point and not any time information For time information the sequential number needs to be multiplied by the sampling period There is also no indication in data if sampling period has been changed during a measurement activity so it is recommendable to make a note of such change in the context CTX tab kal Saving s ensh LAJA ee oe SSI AQ App SensorLab PAIR DATA POST CTX LOG Humidity gt gt Temperature air gt gt Temperature sens gt gt Pressure gt gt Motion gt gt NO2 gt gt 03 gt gt CO gt gt Figure 8 Data visualization tab 3 4 Posting of data to the remote server The POST tab is used to forward the collected measurements to the online database at the remote server which stores the data and forwards it further to the Snowflake platform In this tab you have to choose the appropriate type of connection If you have a flat data plan for your smartphone you can chose any internet connection type but you can also restrict data
10. VESNA AO device to be provided in case of any malfunction or to replace the battery pack To open the device you will need a standard screwdriver for a phillips head M3 size screw Turn the VESNA AO device with its back side up cf Figure 12 and unscrew all 6 screws Figure 12 Back side of the VESNA AO device The next step is to separate the two parts of enclosure as shown in Figure 13 NOTE Be careful as both parts are connected with 2 wires Figure 13 Openning the VESNA AQ device To remove the Alphasense AFE analog front end sensor board further 4 phillips head screws need to be removed cf Figure 14 ane Peewee bill EREEE Sicrecrae 7 _ Figure 14 Removing Alphasense AFE board If you have a replacement board remove the connector from the old board connect it to a new board and insert and securely screw the new board in the box If you received only a single replacement sensor you must change the sensor on the board You can change the sensor with ease as depicted in the following figures Figure 15 Figure 17 Figure 15 Grab the AFE board and the sensor you want to replace Figure 17 Sensor is removed After the sensor is removed insert the new sensor NOTE If you are changing more than one sensor on the same board do NOT mix the position of sensors Each sensor from Alphasense has different calibration data so to make the device as accurate as possible the VESNA
11. VESNA AQ Personal Sensor Unit User manual Klemen Bregar Matev Vu nik Jernej Hribar Miha Smolnikar Mihael Mohor i Jozef Stefan Institute Ljubljana July 2014 Table of Contents 1 Overview and main SPECIFICATIONS cceeccccessecccceseccceeesececeuececceecceeausecessuaecessenceessusecesseneceesenes 3 2 Using VESNA AO device v ciicsissscecciaadienedcsetecvusdatecscecateseseaieesniwoasecedesnsenadunadsvesieagiecadeantedeascndecscoastadevees 4 2 1 Powerine on the VESNA AQ dEVICO ocicscsssiccvoscduccsnsannedchssocdasnnadaequbneduerennesandnsedsaesnnasinesbeaduencoass 4 2 2 Device BEE eee A er ce ero ne ene ARE eee 4 2 3 AS LED EIEN I nn ee ee ee eee 5 3 WS AQ App the mobile app for connecting VESNA AQ device 6 3 1 WS ACOA A EI OR EN TR z a 6 3 2 First time connection context setting and collection of measurements 6 3 3 Biches OVEN E EE MONE ee eer een E E AE TE E A ee TE ee eee 8 3 4 Posting of data to the remote server ssesssssssseesesreresrrerssrrresrrressrrressrereserresererssrrreserereserresene 9 3 5 ENO NE aere E E 10 3 6 Access to posted data through the WeD cccccccsssecccessececeenececeescceeeeseceseeeceseueeceesenseeeeas 10 4 Disassembly of VESNA AQ UMit ccscsccsosssscnsonssecccusvscuonssscnecussessoussseneussscneousrestonsssenenessensousrenss 11 5 Loading binary file to the VESNA AO device nana 14 1 Overview and main specifications
12. er The serial cable needs to be connected to the VESNA SNC board in the VESNA AO device To get to the connector on the VESNA SNC board you must open the box cf Section 4 and take the SNC and SNE AOA boards out of the case Remove 3 screws cf Figure 20 and remove the boards ge eee Be amp e amp amp Figure 20 Removing VESNA SNC and SNE AQA boards After the boards are removed rotate them and connect the cable provided with the VESNA AQ device on one side to the connector indicated in Figure 21 and on the other side to the serial cable as shown in Figure 22 Figure 22 VESNA SNC board connected to a computer The next step is to download and install Flash Loader Demonstrator application from the STM website http www st com web en catalog tools PF257525 After the installation open the Flash Loader Demonstrator application and set the configuration as seen in Figure 23 The only difference you will have is the port number Choose the port number you have indicated in the Device manager see Figure 19 gt Flash Loader Demonstrator KOM ea VIEL Ati ue Select the communication port and set settings then click next to open connection m Common for all families e UART Port Name COM v Parity Even v Baud Rate 256000 Echo Disabled z Data Bits 8 Timeout s 2 z Figure 23 Settings of Flash Loader Demonstrator application On the VESNA SNC board next t
13. irst time you will see the screen as shown in Figure 5 oo ae se S80 JSI AQ App lt SensorLab PAIR DATA POST CTXx LOG Select AQ mobile device Wi Fi access point CITI JSII4 4 Rescan Connection Disconnected Connect Undispatched measurements 0 Battery no data Data fetch interval 30s Figure 5 IJS AO App start screen If the VESNA AQ device is turned on and within the range the mobile app will automatically detect it e g CITI JSI14 in Figure 5 All you need to do is to click the connect button When connecting a given device for the first time it will ask for the access point password which is by default for all VESNA AO units set to passphrase unless you are instructed otherwise This step is shown in Figure 6 WiFi Password Please enter the password for CITI JSI14 passphrase pass phrase passphrase Figure 6 Entering Wi Fi password Before starting with the measurements collection you need to set the context of the measurements Once the context is set it is attached to all the collected measurements until it is modified again To set change the context go to the tab CTX and enter new context click Add to list select this context from the list and click OK see Figure 7 gt gt a z 9 es o ud o JSI AQ A H JSI AQ A 6 0 JS AQ App t 3 SensorLab e YS AQ App 3 SensorLab not set OK test OK test Add to list Add to list Figure 7
14. ish Figure 28 Binary file successfully downloaded to the VESNA AQ device Congratulations you have successfully programed your VESNA AQ device with a new firmware You can close the window re assemble the unit and start using it
15. o the serial connector locate a small button encircled in yellow in Figure 24 Figure 24 Button on the VESNA SNC board Press and hold the button for at least 10 seconds Then wait 5 seconds and click next in the Flash Loader Demonstrator application If you did everything correctly the window shown in Figure 25 should open The device needs to have a power source If installation process gives you an error check the STM Flash Loader Demonstrator settings Check serial cable if it is connected and if the VESNA AO device has a power source battery or micro USB power cable plugged in Loader Demonsi LL x gt Fla VI tele nI ga Target is readable Please click Next to proceed Flash Size Figure 25 Successful connection with the device Click next Select the correct target as indicated in Figure 26 lt e Flash Loader Demonstrator VI vidis ni Please select your device in the target list Target STM32_High density_512K PID th ns BID bj NA Version iz Flash mapping Name Start address End address Size gt z 0x 8000000 0x 8000800 Ox 8001000 0x 8001800 Ox 8002000 Ox 8002800 Ox 8003000 Ox 8003800 Ox 8004000 Ox 8004800 Ox 8005000 0x 8005800 Ox 80007FF Ox 8000FFF Ox 8001 7FF Ox 8001 FFF Ox 80027FF Ox 8002FFF Ox 80037FF Ox S003FFF Ox 80047FF Ox 8004FFF Ox 80057FF Ox 8005FFF 0x800 2K 0x800 2K 0x800 2K 0x800 2K 0x800 2K 0x80
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