snia020 - TI E2E Community
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1. fe E Sree Figure 9 TDC7200 Registers Setup 10 Interfacing a Water Flow meter Sensor to TDC 1000 TDC7200EVM _ SNIAO20 March 2015 Copyright 2015 Texas Instruments Incorporated 1 TEXAS INSTRUMENTS www ti com Observing the Waveform Using an Oscilloscope 9 Observing the Waveform Using an Oscilloscope Table 1 Waveform Observations Using an Oscilloscope CHA START 5 V DIV CHAB STOP 5 V DIV CHC COMP_IN 5V DIV Trigger Normal on Ch A positive edge Time base 20 uV DIV You should be able to get similar display on you scope screen as shown in Figure 10 The time of flight can be measured reference to STOP pulse one to five When calculating the delta TOF if the same STOP pulse is used to measure the TOF for upstream and downstream the net effect is canceled out and the delta TOF is the same no matter what STOP pulse is used to measure The TOF Amplified received signal O 4 START oP Ultrasound signal received Figure 10 Scope Trace TOF Measurement Sequence SNIA020 March 2015 Interfacing a Water Flow meter Sensor to TDC1000 TDC7200EVM 11 Submit Documentation Feedback Copyright 2015 Texas Instruments Incorporated 1 TEXAS INSTRUMENTS Observing the Waveform Using an Oscilloscope www ti com Now change the time base of the scope to 200 uV DIV you should see the TX RX sequence for both directions as sh2. 6 The Choice of the Ultrasonic Flow meter Sensor The zero flow demonstration setup is shown in Figure 4 Figure 4 Zero Flow Demonstration Setup System requirements standards and cost dictate the choice of flow meter sensors Water is a good medium for propagating ultrasonic pressure pulse and the most common sensors in this application have resonance frequency in the range of MHz 1 MHz in this case SNIA020 March 2015 Interfacing a Water Flow meter Sensor to TDC1000 TDC7200EVM 5 Submit Documentation Feedback Copyright 2015 Texas Instruments Incorporated I TEXAS INSTRUMENTS The Choice of the Ultrasonic Flow meter Sensor www ti com For demonstration purposes we use an Audiowell ultrasonic water flow meter pipe shown in Figure 5 This sensor can be obtained from the source included in the reference section Figure 5 Ultrasonic Flow meter Sensor Pipe 6 Interfacing a Water Flow meter Sensor to TDC 1000 TDC7200EVM SNIA020 March 2015 Submit Documentation Feedback Copyright 2015 Texas Instruments Incorporated l TEXAS INSTRUMENTS www ti com Steps to Configure the Setup 7 Steps to Configure the Setup 1 Obtain a TDC1000 TDC7200EVM 2 Obtain the ultrasonic water flow sensor shown in Figure 5 from the source in the reference section of this document Audiowell The union and the pipe extension are not necessary for zero flow test but you would need the end caps to confine water in the pip
3. the user is encouraged to try to correct the interference by one or more of the following measures Reorient or relocate the receiving antenna Increase the separation between the equipment and receiver Connect the equipment into an outlet on a circuit different from that to which the receiver is connected Consult the dealer or an experienced radio TV technician for help Canada 3 2 1 For EVMs issued with an Industry Canada Certificate of Conformance to RSS 210 Concerning EVMs Including Radio Transmitters This device complies with Industry Canada license exempt RSS standard s Operation is subject to the following two conditions 1 this device may not cause interference and 2 this device must accept any interference including interference that may cause undesired operation of the device Concernant les EVMs avec appareils radio Le pr sent appareil est conforme aux CNR d Industrie Canada applicables aux appareils radio exempts de licence L exploitation est autoris e aux deux conditions suivantes 1 l appareil ne doit pas produire de brouillage et 2 l utilisateur de l appareil doit accepter tout brouillage radio lectrigue subi m me si le brouillage est susceptible d en compromettre le fonctionnement Concerning EVMs Including Detachable Antennas Under Industry Canada regulations this radio transmitter may only operate using an antenna of a type and maximum or lesser gain approved for the transmitter by Indust
4. 32645 0 45 693814 13 63647 29109 64622 54915 65785 36231 66823 17548 67886 02884 1 691396 45 693814 14 63646 52803 64621 32448 65777 88726 66815 34253 67885 44314 0 45 693814 15 63647 76147 64622 9573 65785 36782 66823 42032 67886 49746 1 632822 45 693814 16 63646 65594 64621 38095 65778 31033 66815 0262 67885 91553 0 45 693814 17 63648 0473 64623 24957 65785 53369 66824 50988 67886 55282 1 868625 45 693814 18 63646 76365 64621 67419 65778 24024 66815 466 67885 85265 0 45 693814 19 63647 87226 64623 13288 65785 70873 66824 0431 67886 90291 1 45869 45 693814 20 63647 28878 64622 08262 65778 29858 66815 64105 67886 37778 0 45 693814 21 63648 28069 64623 48296 65785 70873 66824 45153 67887 253 1 400342 45 693814 Figure 13 Sample Data Stored in a File 14 Interfacing a Water Flow meter Sensor to TDC1000 TDC7200EVM SNIA020 March 2015 Submit Documentation Feedback Copyright 2015 Texas Instruments Incorporated 1 TEXAS INSTRUMENTS www ti com Appendix 1 Sensor Manufacturer 12 Appendix 1 Sensor Manufacturer Table 2 Sensor Manufacturer APPLICATION MANUFACTURER P N nee Heat water osahat audiowell com en product detail aspx id 80 DN26 Uirasoni low sensor 1000 p i P ja ae AW5Y0980K04L193Z Heat water a audiowell com en product detail aspx id 80 D 20 irasonic fow sensor 1000 P i i P Z AW5Y0980K08L151Z SNIA020 March 2015 Interfacing a Water Flow meter Sensor to TDC1000 TDC7200EVM 15 Submit Documenta
5. Regulatory Notices 3 1 United States 3 1 1 Notice applicable to EVMs not FCC Approved This kit is designed to allow product developers to evaluate electronic components circuitry or software associated with the kit to determine whether to incorporate such items in a finished product and software developers to write software applications for use with the end product This kit is not a finished product and when assembled may not be resold or otherwise marketed unless all required FCC equipment authorizations are first obtained Operation is subject to the condition that this product not cause harmful interference to licensed radio stations and that this product accept harmful interference Unless the assembled kit is designed to operate under part 15 part 18 or part 95 of this chapter the operator of the kit must operate under the authority of an FCC license holder or must secure an experimental authorization under part 5 of this chapter 3 1 2 For EVMs annotated as FCC FEDERAL COMMUNICATIONS COMMISSION Part 15 Compliant CAUTION This device complies with part 15 of the FCC Rules Operation is subject to the following two conditions 1 This device may not cause harmful interference and 2 this device must accept any interference received including interference that may cause undesired operation Changes or modifications not expressly approved by the party responsible for compliance could void the user s authority to operate the equipmen
6. Sample Data Stored ina FIE x sine cities ei mimesis ej br wie made Beit hn in K Sissi 14 List of Tables 1 Waveform Observations Using an Oscilloscope trtrntnnnnnnnnnnnnnnnn en eee tt tn 11 2 SensorManufacturS Tessere ra lat ato as e mn t T SARE 15 All trademarks are the property of their respective owners SNIA020 March 2015 Interfacing a Water Flow meter Sensor to TDC1000 TDC7200EVM 1 Submit Documentation Feedback Copyright 2015 Texas Instruments Incorporated 1 Receiver Ig TEXAS INSTRUMENTS Background Transient time Ultrasonic Flow meters www ti com Background Transient time Ultrasonic Flow meters In Figure 1 a typical ultrasonic flow sensor is shown The sensor consist of a pipe with nominal diameter of D and two piezoelectric transducers placed at fixed distance L from each other The transducers are mounted in a protective housing The housing and the transducers are inserted in the holes in the pipe exposing the inner cover to the fluid in the pipe Two reflection mirrors in the pipe direct the ultrasonic signals from one transducer to the other one in the opposite location Upstream Downstream Transducer Sensor pipe Transducer Reflector Figure 1 Ultrasonic Water Flow meter Pipe The single path sensor of Figure 1 is used for flow applications where the diameter of the pipe is small For larger diameter pipes sensors with multiple paths are used Other types of ultrasonic flow s
7. and customary safeguards Exceeding the specified performance ratings and specifications including but not limited to input and output voltage current power and environmental ranges for the EVM may cause personal injury or death or property damage If there are questions concerning performance ratings and specifications User should contact a TI field representative prior to connecting interface electronics including input power and intended loads Any loads applied outside of the specified output range may also result in unintended and or inaccurate operation and or possible permanent damage to the EVM and or interface electronics Please consult the EVM user guide prior to connecting any load to the EVM output If there is uncertainty as to the load specification please contact a TI field representative During normal operation even with the inputs and outputs kept within the specified allowable ranges some circuit components may have elevated case temperatures These components include but are not limited to linear regulators switching transistors pass transistors current sense resistors and heat sinks which can be identified using the information in the associated documentation When working with the EVM please be aware that the EVM may become very warm 4 3 2 EVMs are intended solely for use by technically qualified professional electronics experts who are familiar with the dangers and application risks associated with handling electrical
8. in the user s manual 7 Connect the EVM to the Host PC using the provided USB cable SNIA020 March 2015 Interfacing a Water Flow meter Sensor to TDC 1000 TDC7200EVM 7 Submit Documentation Feedback Copyright 2015 Texas Instruments Incorporated 13 TEXAS INSTRUMENTS GUI Configuration www ti com 8 GUI Configuration 1 Run the GUI if prompted upgrade the version of the EVM firmware per the instructions in the TDC1000 TDC7200EVM User s Manual 2 Set the registers in the TDC1000 menu to the values shown in 7 Fi and F Flip the CONTINOUS TRIGGER switch to the top position M will m to eh from red a that the system is running Divide by 8 1 Cycle 5 STOPS Enabled TOF Measurement Enabled Cod CZE ZZ Figure 7 TDC1000 Setup Menu in the GUI 8 Interfacing a Water Flow meter Sensor to TDC1000 TDC7200EVM _ SNIA020 March 2015 Copyright 2015 Texas Instruments Incorporated 14 TEXAS INSTRUMENTS www ti com GUI Configuration 5 AP TDC1000 7200 EVM 4 4 STs 7 ON BOARD OSC 8MHz cS Figure 8 Sampling Interval Setup SNIA020 March 2015 _ Interfacing a Water Flow meter Sensor to TDC1000 TDC7200EVM 9 Copyright 2015 Texas Instruments Incorporated 1 TEXAS INSTRUMENTS GUI Configuration www ti com v SS SS e y E 4p TDC 000_7200_EVM os EE x f 6 i i i i q Es ES EX SE EE 4
9. mechanical components systems and subsystems User assumes all responsibility and liability for proper and safe handling and use of the EVM by User or its employees affiliates contractors or designees User assumes all responsibility and liability to ensure that any interfaces electronic and or mechanical between the EVM and any human body are designed with suitable isolation and means to safely limit accessible leakage currents to minimize the risk of electrical shock hazard User assumes all responsibility and liability for any improper or unsafe handling or use of the EVM by User or its employees affiliates contractors or designees 4 4 User assumes all responsibility and liability to determine whether the EVM is subject to any applicable international federal state or local laws and regulations related to User s handling and use of the EVM and if applicable User assumes all responsibility and liability for compliance in all respects with such laws and regulations User assumes all responsibility and liability for proper disposal and recycling of the EVM consistent with all applicable international federal state and local requirements 5 Accuracy of Information To the extent TI provides information on the availability and function of EVMs TI attempts to be as accurate as possible However TI does not warrant the accuracy of EVM descriptions EVM availability or other information on its websites as accurate complete reliable curre
10. returns or exchanges Furthermore no return of EVM s will be accepted if the package has been opened and no return of the EVM s will be accepted if they are damaged or otherwise not in a resalable condition If User feels it has been incorrectly charged for the EVM s it ordered or that delivery violates the applicable order User should contact TI All refunds will be made in full within thirty 30 working days from the return of the components s excluding any postage or packaging costs Governing Law These terms and conditions shall be governed by and interpreted in accordance with the laws of the State of Texas without reference to conflict of laws principles User agrees that non exclusive jurisdiction for any dispute arising out of or relating to these terms and conditions lies within courts located in the State of Texas and consents to venue in Dallas County Texas Notwithstanding the foregoing any judgment may be enforced in any United States or foreign court and TI may seek injunctive relief in any United States or foreign court Mailing Address Texas Instruments Post Office Box 655303 Dallas Texas 75265 Copyright 2015 Texas Instruments Incorporated IMPORTANT NOTICE Texas Instruments Incorporated and its subsidiaries TI reserve the right to make corrections enhancements improvements and other changes to its semiconductor products and services per JESD46 latest issue and to discontinue any product or service per JESD48
11. take appropriate remedial actions Buyer will fully indemnify TI and its representatives against any damages arising out of the use of any TI components in safety critical applications In some cases TI components may be promoted specifically to facilitate safety related applications With such components TI s goal is to help enable customers to design and create their own end product solutions that meet applicable functional safety standards and requirements Nonetheless such components are subject to these terms No Tl components are authorized for use in FDA Class III or similar life critical medical equipment unless authorized officers of the parties have executed a special agreement specifically governing such use Only those TI components which TI has specifically designated as military grade or enhanced plastic are designed and intended for use in military aerospace applications or environments Buyer acknowledges and agrees that any military or aerospace use of TI components which have not been so designated is solely at the Buyer s risk and that Buyer is solely responsible for compliance with all legal and regulatory requirements in connection with such use TI has specifically designated certain components as meeting ISO TS16949 requirements mainly for automotive use In any case of use of non designated products TI will not be responsible for any failure to meet ISO TS16949 Products Applications Audio www ti com audio Au
12. warranty if any for Software is covered in the applicable Software License Agreement 2 2 Tl warrants that the TI EVM will conform to TI s published specifications for ninety 90 days after the date TI delivers such EVM to User Notwithstanding the foregoing TI shall not be liable for any defects that are caused by neglect misuse or mistreatment by an entity other than TI including improper installation or testing or for any EVMs that have been altered or modified in any way by an entity other than TI Moreover TI shall not be liable for any defects that result from User s design specifications or instructions for such EVMs Testing and other quality control techniques are used to the extent TI deems necessary or as mandated by government requirements TI does not test all parameters of each EVM 2 3 If any EVM fails to conform to the warranty set forth above TI s sole liability shall be at its option to repair or replace such EVM or credit User s account for such EVM TI s liability under this warranty shall be limited to EVMs that are returned during the warranty period to the address designated by TI and that are determined by TI not to conform to such warranty If TI elects to repair or replace such EVM TI shall have a reasonable time to repair such EVM or provide replacements Repaired EVMs shall be warranted for the remainder of the original warranty period Replaced EVMs shall be warranted for a new full ninety 90 day warranty period
13. A The cross sectional area of the meter pipe 9 TDC 1000 uses a common approach known as zero crossing method to generate the START and STOP At low flow rates the difference between TOF g and TOFsy is very small for this reason a highly accurate timer such as TDC7200 with picoseconds resolution is reguired SNIA020 March 2015 Interfacing a Water Flow meter Sensor to TDC1000 TDC7200EVM 3 Submit Documentation Feedback Copyright 2015 Texas Instruments Incorporated Ig TEXAS INSTRUMENTS Zero Flow Measurement Setup www ti com 5 Zero Flow Measurement Setup In this document we describe interfacing of TDC1000 and TDC7200 integrated circuits The block diagram of the setup is shown in Figure 3 MSP430 microcontroller is used for programming of TDC 1000 and TDC7200 and for communication with a host PC over USB interface A Graphic User Interface GUI is used for programming the registers of TDC1000 and TDC7200 and for displaying ATOF at zero flow condition TDC7200 MSP43XX Host PC Running TDC1000 7200 GUI TRIGGER TDC1000 gS X g HER BEN TDC1000 TDC7200EVM RTD temp sensor Ultrasonic flow sensor Figure 3 Zero Flow Measurement Setup 4 Interfacing a Water Flow meter Sensor to TDC 1000 TDC7200EVM SNIA020 March 2015 Submit Documentation Feedback Copyright 2015 Texas Instruments Incorporated I TEXAS INSTRUMENTS www ti com The Choice of the Ultrasonic Flow meter Sensor
14. I8 TEXAS INSTRUMENTS Interfacing a Water Flow meter Sensor to TDC 1000 TDC7200EVM User s Guide SNIAO20 March 2015 Ultrasonic flow meters are gaining wide usage in commercial industrial and medical applications Major benefits of utilizing this type of flow meter are higher accuracy low maintenance no moving parts non invasive flow measurement and the ability to diagnose the meter s health regularly A major advantage of using T s ultrasonic sensing is the ultra low power consumption which allows metering companies to use the same battery for a very long time This article is intended as an introduction to ultrasonic flow sensing and describes a demonstration setup to measure velocity of flow in a pipe using an ultrasonic water flow meter sensor the TDC1000 ultrasonic analog front end UAFE and TDC7200 precision time interval timer Contents 1 Background Transient time Ultrasonic Flow meters ttttrttnrtnnnnnnnnnnnonnnonnn nn nt tt 2 2 Measurement SEQUENCE ssrisru rktunikorussnemn ta ko vnnhu Kd disk kia loj o eat 2 3 Volumetric Flow Calculations s canere aeae Pataj kral rio air tn 3 4 Calculation of Volumetric Flow Rate Q sssssssssesssnsssnsnsnsnnrrnnrurnnnrnnnnnrnnnnnunnnnnnnnnnnnnnnnnnnnnnnnnnnnn 3 5 Zero Flow Measurement Setup sss s lu k akad ads a a AV ko kd VEE SK KBA KKOV KAVAN v a kd 4 6 The Choice of the Ultrasonic Flow meter SenSor tettttnntnnnnnnnnnn nt et eee nn 5 7 Steps to Co
15. THER LEGAL THEORY AND EVEN IF THE EVM FAILS TO PERFORM AS DESCRIBED OR EXPECTED Limitations on Damages and Liability 8 1 General Limitations IN NO EVENT SHALL TI BE LIABLE FOR ANY SPECIAL COLLATERAL INDIRECT PUNITIVE INCIDENTAL CONSEQUENTIAL OR EXEMPLARY DAMAGES IN CONNECTION WITH OR ARISING OUT OF THESE TERMS ANDCONDITIONS OR THE USE OF THE EVMS PROVIDED HEREUNDER REGARDLESS OF WHETHER TI HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES EXCLUDED DAMAGES INCLUDE BUT ARE NOT LIMITED TO COST OF REMOVAL OR REINSTALLATION ANCILLARY COSTS TO THE PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES RETESTING OUTSIDE COMPUTER TIME LABOR COSTS LOSS OF GOODWILL LOSS OF PROFITS LOSS OF SAVINGS LOSS OF USE LOSS OF DATA OR BUSINESS INTERRUPTION NO CLAIM SUIT OR ACTION SHALL BE BROUGHT AGAINST TI MORE THAN ONE YEAR AFTER THE RELATED CAUSE OF ACTION HAS OCCURRED 8 2 Specific Limitations INNO EVENT SHALL TI S AGGREGATE LIABILITY FROM ANY WARRANTY OR OTHER OBLIGATION ARISING OUT OF OR IN CONNECTION WITH THESE TERMS AND CONDITIONS OR ANY USE OF ANY TI EVM PROVIDED HEREUNDER EXCEED THE TOTAL AMOUNT PAID TO TI FOR THE PARTICULAR UNITS SOLD UNDER THESE TERMS AND CONDITIONS WITH RESPECT TO WHICH LOSSES OR DAMAGES ARE CLAIMED THE EXISTENCE OF MORE THAN ONE CLAIM AGAINST THE PARTICULAR UNITS SOLD TO USER UNDER THESE TERMS AND CONDITIONS SHALL NOT ENLARGE OR EXTEND THIS LIMIT Return Policy Except as otherwise provided TI does not offer any refunds
16. an RRER AES ORMORKRTY NEBE CGS RO TSR BHT V KOH REA SERA Z TT UZVBOBBA U KARA SH CUSVEOOCPAIRL TH BRABTOLO ALFOUTHAD PEER TWEE BEPHWETNCCER lt K EE 1 r oo K S la eT mee een 2 S AROR FT ESR PAW LE lt 3 PEAS ALA NB ORAVE lt ZB kim LEO TEACO TOE CRE BRALBALZURY RE BRCEZVEDELET Eee BTAVEUBAlt BRAN A i A S NSRP HOCCeCHB lt KEEW ARTETA 1 YAYINLA YARNS Raw ie Raa 6 TA 24815 ATAK 3 3 3 Notice for EVMs for Power Line Communication Please see http www tij co jp lsds ti ja general eStore notice 02 page SRA BIO TOT V EB EUICSSRORBSRICIUTHH RNECZECKE lt KEKEE V http www tij co jp Isds ti ja general eStore notice 02 page 4 EVM Use Restrictions and Warnings 4 1 EVMS ARE NOT FOR USE IN FUNCTIONAL SAFETY AND OR SAFETY CRITICAL EVALUATIONS INCLUDING BUT NOT LIMITED TO EVALUATIONS OF LIFE SUPPORT APPLICATIONS 4 2 User must read and apply the user guide and other available documentation provided by TI regarding the EVM prior to handling or using the EVM including without limitation any warning or restriction notices The notices contain important safety information related to for example temperatures and voltages 4 3 Safety Related Warnings and Restrictions 4 3 1 User shall operate the EVM within Tl s recommended specifications and environmental considerations stated in the user guide other available documentation provided by TI and any other applicable requirements and employ reasonable
17. e for the test The RTD temperature senor is not included in the sensor and can be obtained from a different manufacturer The RTD used in this setup is a JUMO PT1000 If you need to use a PT500 temperature senor you would need to change the temp sensor reference resistor RREF on the TDC1000 TDC7200EVM to 500 O the EVM board comes with a 1000 0 resistor reference resistor 3 Place a cap at one end of the sensor and fill the pipe with clean water Make sure there are no bubbles trapped in the sensor Place the second cap and the open end of the pipe to confine water inside the pipe 4 Connect the sensor to the EVM connector as shown in Figure 6 Place the pipe on a flat surface in a standup position as shown in Figure 4 This would move up any bubbles trapped between the two transducers to the top of the pipe and away from the signal path Bubbles trapped in the signal path cause severe attenuation of signal 5 You may want to view the signal waveforms Start Stop and Ultrasound received waveform at the input of TDC1000 internal comparators on a scope to make sure proper operation of the sensor You can either connect the scope probes to the provided terminals test points on the EVM or solder SMA connector on the EVM board and use the cables shown in Figure 4 di XAS sg uc S 24 INSTRUMENTS R I Ox j IE TDC1000 TDC7200EVM k M C A AA Transducer 1 8 2 o One 9 6 Install the TDC1000 TDC7200EVM software per the instruction
18. ensors are available with clamped on transducers In this article the discussion will be limited to reflective type single path sensors such as the one shown in Figure 1 Measurement Sequence Referring to Figure 2 the measurement sequence starts by exciting one of the transducers A by applying a burst of given number of pulses in Figure 2 three TX pulses to the transducer The frequency of excitation signal must be equal to the resonance frequency of the transducer For water flow applications transducers with resonant frequency of one to three MHz are used Excitation TX START RX Qualifying threshold setting Figure 2 Ultrasonic Signal Measurement Sequence The transducer generates ultrasonic pressure pulses that are directed towards the second transducer in this case B by means of the reflectors in the pipe At the same time that the first pulse is being applied to the transducer a START signal is generated to mark the beginning of the time of flight measurement Interfacing a Water Flow meter Sensor to TDC 1000 TDC7200EVM SNIA020 March 2015 Submit Documentation Feedback Copyright 2015 Texas Instruments Incorporated 1 TEXAS INSTRUMENTS www ti com Volumetric Flow Calculations On the receiver side the electronic circuits in the path condition the received signal and generate a STOP pulse to mark the time the ultrasonic pulse is received at the other end The time taken f
19. gain est sup rieur au gain maximal indiqu sont strictement interdits pour l exploitation de metteur Japan 3 3 1 Notice for EVMs delivered in Japan Please see http www tij co jp Isds ti ja general eStore notice 01 page HABA Ic HANDRA h B RIE TIA ROECSZECHRKEEW http www tij co jp lsds ti ja general eStore notice 01 page 3 3 2 Notice for Users of EVMs Considered Radio Frequency Products in Japan EVMs entering Japan may not be certified by TI as conforming to Technical Regulations of Radio Law of Japan If User uses EVMs in Japan not certified to Technical Regulations of Radio Law of Japan User is required by Radio Law of Japan to follow the instructions below with respect to EVMs 1 Use EVMs in a shielded room or any other test facility as defined in the notification 173 issued by Ministry of Internal Affairs and Communications on March 28 2006 based on Sub section 1 1 of Article 6 of the Ministry s Rule for Enforcement of Radio Law of Japan 2 Use EVMs only after User obtains the license of Test Radio Station as provided in Radio Law of Japan with respect to EVMs or 3 Use of EVMs only after User obtains the Technical Regulations Conformity Certification as provided in Radio Law of Japan with respect to EVMs Also do not transfer EVMs unless User gives the same notice above to the transferee Please note that if User does not follow the instructions above User will be subject to penalties of Radio Law of Jap
20. latest issue Buyers should obtain the latest relevant information before placing orders and should verify that such information is current and complete All semiconductor products also referred to herein as componentis are sold subject to Ts terms and conditions of sale supplied at the time of order acknowledgment TI warrants performance of its components to the specifications applicable at the time of sale in accordance with the warranty in T s terms and conditions of sale of semiconductor products Testing and other quality control techniques are used to the extent TI deems necessary to support this warranty Except where mandated by applicable law testing of all parameters of each component is not necessarily performed Tl assumes no liability for applications assistance or the design of Buyers products Buyers are responsible for their products and applications using TI components To minimize the risks associated with Buyers products and applications Buyers should provide adequate design and operating safeguards TI does not warrant or represent that any license either express or implied is granted under any patent right copyright mask work right or other intellectual property right relating to any combination machine or process in which TI components or services are used Information published by TI regarding third party products or services does not constitute a license to use such products or services or a warranty or endor
21. nfigure the Setup ssesedudosin n oh ria Kau i a Mama Hejna a a sina 7 8 GUI Configuration zasune E E E ho id dat i honu 8 9 Observing the Waveform Using an OscilloScope ttrntntnnnnnnnnnnnnn eee tt trn 11 10 Displaying the Delta TOF in GUl s GRAPH Menu ence eee neces nn nn nn nn K K K K Kn 13 11 Saving B E E a File sassate kona no k atin wen r o i 14 12 Appendix 12 Sensor Manufacturer sves rreson BSA o a RR AK oy ah ae aE S B A AB A een ta 15 List of Figures 1 Ultrasonic Water Flow meter Pipe ccscceeeeeeecececeeeeeeeeeeseceeeaeeeaeeseeeseseseaeeseesseseanseaseesseseanees 2 Ultrasonic Signal Measurement Seguence ortonnnnn nn RR nn 2 3 Zero Flow Measurement SOUP ss saa slan so lu sl lod laz sna 4 4 ZeTO ElOW Demonstraion SStU Di 4 Ha hs sea sam cam rn Zr Maa ples ee EEE EEE ona 5 5 Ultrasonic Flowmeter Sensor PIDE sashinazo n ara dala oa ra a rn 6 6 EVM Connections to the SENSO sssaaa a don HE Dn nn r ha TE a td nn v 7 7 TDC1000 Setup Menu in the GUI cee cece nt nn nn 8 8 Sampling Interval Sel p sua hne ko nal pluh dana h bouda S 9 9 TIDG 7200 Registers SS UPiso tusonatusk luim au koi ryu las hadia k hu k n a boa daleko bohate das dan 10 10 Scope Trace TOF Measurement SegUence ortnnnnnn nt RR tn 11 11 ATOF Measurement Seg enCe rooien E nia cia du tlnsiuitie eicia nicieraaia lunt e 12 12 INT OF Graph DIS LAY z che sna ta ccna ccciecsece icc k E ha o cln 13 13
22. nt or error free 10 Disclaimers 6 1 EXCEPT AS SET FORTH ABOVE EVMS AND ANY WRITTEN DESIGN MATERIALS PROVIDED WITH THE EVM AND THE DESIGN OF THE EVM ITSELF ARE PROVIDED AS IS AND WITH ALL FAULTS TI DISCLAIMS ALL OTHER WARRANTIES EXPRESS OR IMPLIED REGARDING SUCH ITEMS INCLUDING BUT NOT LIMITED TO ANY IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE OR NON INFRINGEMENT OF ANY THIRD PARTY PATENTS COPYRIGHTS TRADE SECRETS OR OTHER INTELLECTUAL PROPERTY RIGHTS 6 2 EXCEPT FOR THE LIMITED RIGHT TO USE THE EVM SET FORTH HEREIN NOTHING IN THESE TERMS AND CONDITIONS SHALL BE CONSTRUED AS GRANTING OR CONFERRING ANY RIGHTS BY LICENSE PATENT OR ANY OTHER INDUSTRIAL OR INTELLECTUAL PROPERTY RIGHT OF TI ITS SUPPLIERS LICENSORS OR ANY OTHER THIRD PARTY TO USE THE EVM IN ANY FINISHED END USER OR READY TO USE FINAL PRODUCT OR FOR ANY INVENTION DISCOVERY OR IMPROVEMENT MADE CONCEIVED OR ACQUIRED PRIOR TO OR AFTER DELIVERY OF THE EVM USER S INDEMNITY OBLIGATIONS AND REPRESENTATIONS USER WILL DEFEND INDEMNIFY AND HOLD TI ITS LICENSORS AND THEIR REPRESENTATIVES HARMLESS FROM AND AGAINST ANY AND ALL CLAIMS DAMAGES LOSSES EXPENSES COSTS AND LIABILITIES COLLECTIVELY CLAIMS ARISING OUT OF OR IN CONNECTION WITH ANY HANDLING OR USE OF THE EVM THAT IS NOT IN ACCORDANCE WITH THESE TERMS AND CONDITIONS THIS OBLIGATION SHALL APPLY WHETHER CLAIMS ARISE UNDER STATUTE REGULATION OR THE LAW OF TORT CONTRACT OR ANY O
23. or the ultrasound wave to travel from one sensor to the other is referred as the Time Of Flight TOF A stop watch is needed to measure the time internal between the START and STOP in this case TOF a The direction of the transmit receive sequence is switched and next the TOF is measured The difference between TOF and TOF gz is proportional to the velocity of the flow of the medium in the pipe 3 Volumetric Flow Calculations The expressions for calculating the TOF between two transducers is given as _ distance between the transducers TOF speed of sound 1 Referring to Figure 1 the expressions for TOF for downstream TOF s and upstream TOF are 1 L 1 TOFAB 22 NA C V C 2 1 L 1 TOFg gt Cay O where D 2 Dis the inner diameter of the pipe C Speed of sound in the medium V Average Velocity of the medium fluid gas in the pipe 3 Rearranging the terms and solving for V ATOF 5 L 3 L C C V C C V de a TON C V ACEL Cz y2 4 AT C V 2 L V 5 Since C gt gt V C V C 6 And AT C 2 L V 7 a AT C 2L 8 4 Calculation of Volumetric Flow Rate Q The relationship for calculate the volumetric flow rate is The relationship for calculate the volumetric flow rate is O K V A where K Pipe calibration factor depending on the sensor Va Average velocity though of the fluid in the pipe
24. own in Figure 11 In mode 2 of TDC1000 operation if CH_SWP is enabled the state machine upon receiving a trigger pulse will TX RX in one direction then switch the direction Upon receiving a second trigger it will TX RX in the other direction E N y X AtoB TRX RX sequence transducer BtoA x Figure 11 ATOF Measurement Sequence 12 Interfacing a Water Flow meter Sensor to TDC 1000 TDC7200EVM SNIA020 March 2015 Submit Documentation Feedback Copyright 2015 Texas Instruments Incorporated 1 TEXAS INSTRUMENTS www ti com Displaying the Delta TOF in GUI s GRAPH Menu 10 Displaying the Delta TOF in GUI s GRAPH Menu Click on the GRAPH tab to display the GRAPH menu In the box below Flow MODE on the right bottom corner of the display check the flow mode option In this mode the GUI generates a downstream and upstream sequence calculates the Delta TOF and displays it at the top right of the screen under FLOW DELTA AVG ns Under TDC_SELECT chose the STOP pulse STOP1 STOP2 etc that provides the best accuracy in calculating the TOF Try different selection and observe the changes in delta TOF and STADEV As mentioned in the previous section as the TOF in the upstream and the downstream directions are measured in reference to the same STOP pulse the net effect is independent of the choice of the STOP pulse To start the graph click on START Graph tab you sho
25. ry Canada To reduce potential radio interference to other users the antenna type and its gain should be so chosen that the equivalent isotropically radiated power e i r p is not more than that necessary for successful communication This radio transmitter has been approved by Industry Canada to operate with the antenna types listed in the user guide with the maximum permissible gain and required antenna impedance for each antenna type indicated Antenna types not included in this list having a gain greater than the maximum gain indicated for that type are strictly prohibited for use with this device Concernant les EVMs avec antennes d tachables Conform ment a la r glementation lndustrie Canada le pr sent metteur radio peut fonctionner avec une antenne d un type et d un gain maximal ou inf rieur approuv pour metteur par Industrie Canada Dans le but de r duire les risques de brouillage radio lectrique a intention des autres utilisateurs il faut choisir le type d antenne et son gain de sorte que la puissance isotrope rayonn e guivalente p i r e ne d passe pas intensit n cessaire a tablissement d une communication satisfaisante Le pr sent metteur radio a t approuv par Industrie Canada pour fonctionner avec les types d antenne num r s dans le manuel usage et ayant un gain admissible maximal et imp dance requise pour chaque type d antenne Les types d antenne non inclus dans cette liste ou dont le
26. sement thereof Use of such information may require a license from a third party under the patents or other intellectual property of the third party or a license from TI under the patents or other intellectual property of TI Reproduction of significant portions of TI information in TI data books or data sheets is permissible only if reproduction is without alteration and is accompanied by all associated warranties conditions limitations and notices TI is not responsible or liable for such altered documentation Information of third parties may be subject to additional restrictions Resale of TI components or services with statements different from or beyond the parameters stated by TI for that component or service voids all express and any implied warranties for the associated TI component or service and is an unfair and deceptive business practice TI is not responsible or liable for any such statements Buyer acknowledges and agrees that it is solely responsible for compliance with all legal regulatory and safety related requirements concerning its products and any use of TI components in its applications notwithstanding any applications related information or support that may be provided by TI Buyer represents and agrees that it has all the necessary expertise to create and implement safeguards which anticipate dangerous consequences of failures monitor failures and their consequences lessen the likelihood of failures that might cause harm and
27. t FCC Interference Statement for Class A EVM devices NOTE This equipment has been tested and found to comply with the limits for a Class A digital device pursuant to part 15 of the FCC Rules These limits are designed to provide reasonable protection against harmful interference when the equipment is operated in a commercial environment This equipment generates uses and can radiate radio frequency energy and if not installed and used in accordance with the instruction manual may cause harmful interference to radio communications Operation of this equipment in a residential area is likely to cause harmful interference in which case the user will be required to correct the interference at his own expense 3 2 3 3 FCC Interference Statement for Class B EVM devices NOTE This equipment has been tested and found to comply with the limits for a Class B digital device pursuant to part 15 of the FCC Rules These limits are designed to provide reasonable protection against harmful interference in a residential installation This equipment generates uses and can radiate radio frequency energy and if not installed and used in accordance with the instructions may cause harmful interference to radio communications However there is no guarantee that interference will not occur in a particular installation If this equipment does cause harmful interference to radio or television reception which can be determined by turning the equipment off and on
28. tion Feedback Copyright 2015 Texas Instruments Incorporated STANDARD TERMS AND CONDITIONS FOR EVALUATION MODULES Delivery TI delivers TI evaluation boards kits or modules including any accompanying demonstration software components or documentation collectively an EVM or EVMs to the User User in accordance with the terms and conditions set forth herein Acceptance of the EVM is expressly subject to the following terms and conditions 1 1 EVMs are intended solely for product or software developers for use in a research and development setting to facilitate feasibility evaluation experimentation or scientific analysis of TI semiconductors products EVMs have no direct function and are not finished products EVMs shall not be directly or indirectly assembled as a part or subassembly in any finished product For clarification any software or software tools provided with the EVM Software shall not be subject to the terms and conditions set forth herein but rather shall be subject to the applicable terms and conditions that accompany such Software 1 2 EVMs are not intended for consumer or household use EVMs may not be sold sublicensed leased rented loaned assigned or otherwise distributed for commercial purposes by Users in whole or in part or used in any finished product or production system Limited Warranty and Related Remedies Disclaimers 2 1 These terms and conditions do not apply to Software The
29. to type the number of samples to be saved If type ok without typing in the number of samples in the displayed box 0 samples by default the GUI will continuously save unlimited number of data in the file until the STOP GRAPH tab is pressed to stop displaying the graph The content of the file includes information as shown in Figure 13 TOF referenced to Delta TOF nS based on the STOP pulse selected in the STOP1 pulse ns TDC SELECT box In this case START STOP2 TOF downstream A z E Start to Stopl Start to Stop2 Start to Stop3 Start to Stop4 Start to Stop5 Delta TOF RTD1 Temp 2 63644 77881 64619 45727 65775 96333 66812 95379 67883 51831 p 46 299204 3 63645 3517 64620 56811 65783 53072 66821 02685 67884 4469 71 110845 46 299204 4 63645 06949 64619 8076 65776 37038 66814 35072 67883 92626 0 46 299204 TOF 5 63645 89061 64621 03195 65783 96182 66822 59194 67884 45329 1 224349 46 299204 downstream 5 63645 31445 64620 09651 65776 50218 66814 67933 67883 93135 o 46 299204 7 63646 22752 64621 32601 65784 52387 66822 48847 67885 14722 1 229494 46 299204 8 63645 47364 64620 15866 65776 42324 66813 92907 67884 62436 0 46 299204 9 63646 47303 64621 49896 65783 90171 66822 12137 67885 56146 1 340307 46 299204 10 63645 65826 64620 33147 65777 36928 66815 00934 67884 45378 0 46 299204 11 63646 40247 64621 61759 65784 05733 66822 13856 67885 49712 1 286128 46 299204 12 63646 0613 64620 85775 65777 65389 66814 93414 67885
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31. uld see the yellow moving trace of the delta TOF versus time as shown in Figure 12 If the numbers in delta TOF and the STDEV boxes are changing but the graph is not being displayed black screen then the graph is out of scale To force the graph to be displayed in the window place the cursor on the black background and right click your mouse A drop window display will show up giving you the option to select auto scale in the X and Y axis Once you check mark the auto scale box the GUI will scale the graph to fit in the display window dy 7DC1000 7200 DM Delta TOF In nano seconds 0 054282 TDC STDEV ns 0 006887 START STOP 3 START Check GRAPH FLOW MODE 5000 vw Check to store data TEMP AVG VALUE degC vem EV S file 24 66 Temp of the RTD Once Every 5 TOF sensor in the pipe Readina Graoh Data Successful Figure 12 ATOF Graph Display SNIA020 March 2015 Interfacing a Water Flow meter Sensor to TDC1000 TDC7200EVM 13 Submit Documentation Feedback Copyright 2015 Texas Instruments Incorporated Ig TEXAS INSTRUMENTS Saving Data in a File www ti com 11 Saving Data in a File To save data in a file for post processing purpose check the box SAVE GRAPH DATA TO FILE before running the graph by clicking on START GRAPH button You will be asked to name the file and identify a location in your computer to store the file When you type in the information click the ok tab you will be prompted
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