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TDC1000-TDC7200 and Flow-Meter

user4477555
Prodigy 70 points
Other Parts Discussed in Thread: TDC1000

I want to use TDC1000-TDC7200 EVM to develop a flow meter. Please tell me what I need, software and hardware. If I don't use a PC, How do I make it.EVM

  • 0
    TI__Expert 3350 points

    Please check the following documentations:

    Apps note:  "Ultrasonic sensing for water flow meters and heat meters"    www.ti.com/.../snia020

    TI reference design :    " Ultrasonic Water Flow Meter Design using Time to Digital Conversion"   www.ti.com/.../tidm-ultrasonic-flow-tdc

    Also see the attached document:


    6114.0513.Interfacing a water flow sesnor to TDC1000-TDC7200EVM-022715.pdf

  • 0 in reply to Bahram Mirshab
    Prodigy 65 points
    I want to use use TDC1000-TDC7200 EVM to develop a Gas meter. Can you provide some reference documentation for me? thank you
  • 0 in reply to user4502746
    TI__Expert 4725 points
    The TDC1000-TDC7200 EVM is targeted at liquid level, concentration and flow applications utilizing 1Mhz transducers. For gas or air applications utilizing 200kHz or less we recommend the TDC1000-GASEVM as it provides the high voltage excitation required for gas applications.

    Best regards,
  • 0 in reply to user4502746
    TI__Expert 3350 points

    The attached application note will be released shortly, it will provide you some directions towards  implementing a prototype using  TDC1000-TDC7200 for gas flow applications.TDC1000_SNAA284.pdf

  • 0 in reply to Bahram Mirshab
    Prodigy 65 points
    thanks for your reply. in the application vedio of tdc1000-tdc7200 evm on the official website, your engineer load a config file of tdc1000. where can i find the config file? should i write it by myself or provide by ti?
  • 0 in reply to user4502746
    TI__Expert 3350 points

    I assume that  you are referring to the video titled "Fluid flow metering made easy with ultrasonic sensing". If so,  attached is a config. file for this demo. Please note that you may need to adjust the no. of TX pulses and the gain of the PGA to optimize the setting for your application. Please notice that the config. file is for a 1 MHz flow-meter transducer.

    If you are referring to a different video, please provide the title.

     

    Fullscreen FLOW DEMO Config.txt Download 
    TDC1000_Config0                         43
TDC1000_Config1                         45
TDC1000_Config2                         12
TDC1000_Config3                         0C
TDC1000_Config4                         1F
TDC1000_TOF-1                           80
TDC1000_TOF-0                           1F
TDC1000_Error_Flags                     00
TDC1000_Timeout                         21
TDC1000_Clock_Rate                      02
TDC1000_Conts_Trigger                   00
TDC7200_Config1                         02
TDC7200_Config2                         44
TDC7200_Interrupt_Status                07
TDC7200_Interrupt_Mask                  07
TDC7200_Coarse_Cntr_Ov_H                FF
TDC7200_Coarse_Cntr_Ov_L                FF
TDC7200_Clock_Cntr_Ov_H                 FF
TDC7200_Clock_Cntr_Ov_L                 FF
TDC7200_Clock_Cntr_Stop_Mask_H          00
TDC7200_Clock_Cntr_Stop_Mask_L          00
TRIGGER_UPDATE_FREQ                     0000
TDC_AVG/STDEV_NUM_ELEMS                 0014
SAVE_GRAPH_DATA_TO_FILE                 00
FLOW_MODE_SELECT                        01
Y-SCALE_CENTER                          0000
X-SCALE_RANGE                           0000
MEASURE_RTD1                            01
SAVE_RESULT_REGR_TO_FILE                00
GRAPH_MULTI_STOPS                       00
TDC_SELECT                              00
TEMP_RTD_SELECT                         00
TEMP_RTD_MODE                           01
TEMP_AVG/STDEV_NUM_ELEMS                000A
SAVE_TEMP_DATA                          00
GRAPH_YMAX_DATA                         000000008CCCCCCC
GRAPH_YMIN_DATA                         000000007FFFFFFF
TDC1000-HV_DRV_EN1                      00
TDC1000-HV_DRV_EN2                      00
HV_DRV_EN1_Period                       001E
HV_DRV_EN2_Period                       001E
ENABLE_POWER_CYCLE                      00
CLK_FREQ_(1-16MHz)                      8.000000
CLK_SOURCE_SEL                          00
CPU_CLK_FREQ                            05
CPU_CLK_EN                              00
TDC1000-HV_BST_PWR_EN                   00
HV_BST_PWR_EN_Period                    3A98
FWD2REV_FLOW_DELAY                      0000
TDC1000-IMPE_MATCH_EN                   00

     

     

  • 0 in reply to Bahram Mirshab
    Prodigy 65 points
    thank you. this is one of the vidio. and there is an other one named " how to use ultrasonic sensing for fluid leveland identification tdc1000-tdc7200evm". what i'm concerned is where can i download this confif file? the demo config file you send to me is writed by you? if so, to suit my application i just need to change the parameter of the config?
  • 0 in reply to user4502746
    TI__Expert 4725 points

    The video demonstrates a demo cell our sales team has to help demonstrate the TDC1000 in both Level and Concentration applicaitons. In the above thread you say you're building a gas flow meter. What is your application? I can provide the best help if I understand what your application is.

    Best regards,

     

     

  • 0 in reply to Matthew Minasi
    Prodigy 65 points

    I want to use tdc1000 to calculate the gas flow inside the pipe. The model of the device is like this.

    D is about 2.5cm, and in the later application may increase to more than ten centimeters. L is about 6.5cm.

    Now i have a tdc1000-tdc7200 evm, but i don't kown hao to set the parameters of each register. The frequency of  transducer is about 75khz , is it suitable to the experiment?

  • 0 in reply to user4502746
    TI__Expert 4725 points
    For gas flow the usual frequency is 200-300kHz. The distance is a minimum of 10-12 cm for water. For GAS you will need to increase the distance substantially as it can take up to 30 pulses to get the transducer generating enough sound energy to receive at the other transducer. There must be enough physical distance between the two transducers so that the entire echo envelope can be clearly detected. The greater the distance traveled in the medium the more sensitive the flow sensor.