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LDC1000 For Vehicle Detection

Hello,

           I would like to know if the LDC1000 ic can be used to detect large objects such as Vehicles. Our current requirement is to establish the presence of vehicles for tollway operation.  The loop will be embedded into the ground. 

           Also the inductive loop needs to spread across 2-3 meters in length and width. Will it be possible to incorporate such a large loop with LDC1000. If so, how? Please share links to design notes. 

Regards

Tejas 

          

  • Hello Tejas,

    Yes, this is great application for LDC1000.

    You will need to create a large loop with a few turns only to keep the inductance ~30-100uHr.

  • Hello Evgeny,

    I'm interesting this application for LDC1000 too. Max standard range of the loop detectors is 15uH....2000uH.

    Can LDC1000 work in this range and may be you have a link to a design project of this application?

  • Hello Eugene,


    Could you please clarify, do your coils change inductance during operation, or just the design will have to support different types of coils ranging from 15uHr to 2mHr?

  • Unfortunately an inductivity of the loop detectors is various. It depend from many factors and it can't guess in advance. A vehicle loop detector is a few turns of the cable in the road.

    A vehicle loop detector is a few turns of the cable in the road. I want to measure its inductivity.
    Therefore probably I can't understand you. A sample of the real design project could help if you have!

  • Hi Eugene,

    do you mean to say that the inductance of the loop is not known when a system is built?

    Or are you trying to retrofit existing systems with LDC1000?

  • Hi Evgeny,

    I mean to say that a loop traffic detector is a separate device as a part of traffic controller. When we produce a traffic detector for the traffic controller we don't know which an inductive loop will be connected to it. Therefore we as a producer of the loop detector want to create a new device with LDC1000 like a main element of the loop detector.

  • Hi Eugene,

    Apologies for the delay in my answer.

    Thank you for your explanation, now I see what you need to do!
    Yes, LDC1000 is capable of supporting this range of inductances, even with a fixed cap value! Choose it so that at min expected inductance (15uH) LC tank frequency = 5MHz. Then, at higher inductance values the frequency will go down, but stable oscillations will still be maintained.


    Please reach out for our marketing team should you require further support!