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TDC1000: wire length from Transducer to TDC1000

Shreenidhi Patil
Expert 3936 points
Part Number: TDC1000

Hello team ,

Do we have any documents relating to the performance of the length of the wire from the Ultrasonic sensor to the TDC1000 ,

My customer require at least 2~3 meter long wire because they  are working for commercial vehicle. They  will use shield cable in vehicle wiring harness.where they have placed the PCB with TDC.

The transducer are on the bottom of the tank stuck with ultrasonic glue . boost circuitry is on the chassis which around 2 meter away

The length of the wire is between the Transducer  and  TDC1000

( however we are using  boost circuitry as shown in this EVM design http://www.ti.com/lit/ug/sniu026a/sniu026a.pdf )

So basically the distance between the transducer and the green board below

 Can you please help me out in suggesting the architecture for interface if the tank is 2-3 Meter away from the main on board computer .

 

 

Also one more query from my end customer is regarding the glue .

 

Which glue is the suggested glue for transducer on a metal tank ?

 

This is will be in automotive application , hence can it be used in moisture , humidity hard environment condition

It will be exposed to lot of vibrations , also , will it be good in such condition ?

 

Thank you 

  • 0
    TI__Mastermind 31655 points
    Hello Shreenidhi,

    There is not currently any data regarding this length of wire between the TDC1000-BSTEVM and the transducer. However, with the cables shielded and the amplification occurring prior to the cable run, the effect should be minimal on the transmit side. Will other wires be run alongside through the same harness?

    Please contact the manufacturer of the transducer to determine the best glue to use for your application. The cyanoacrylate with latex that is suggested in our app notes is a good starting place, but it may not hold up to such harsh conditions. An epoxy may be better for this use case.

    As long as the transducer is a closed type, it should not be significantly affected by moisture, etc. Vibrations will only cause an issue if they are in the same frequency range that the transducer is operating at, which is unlikely.

    Regards,