Data acquisition on torque sensor

Trainee28

Trainee28

@trainee28-CLcr9p • Oct 26, 2024
Hello,

I am a new member. I have some question concerning data acquisition on a torque sensor.

I have a torque sensor that I use to mesure the torque and speed of a motor. The torque sensor outputs an analog signal of +/-5V (torque) and two digital signals TTL 5V(speed). I need to choose a data acquisition device to acquire the analog and digital signals of this torque sensor but I don't really know the specification to look for when choosing the right device. The torque sensor is able to take 10000 mesure of torque value per second (10kHz). With this information, should I choose a device with a sample rate larger than 10kHz or smaller? Why is that so? Can someone help me out please?
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  • Shashank Moghe

    Shashank Moghe

    @shashank-94ap1q • Mar 2, 2015

    Of course you should choose a device with at least 2.56 times 10 kHz sampling rate (Why? That's a basic you should learn in Signal Processing). Besides, most of the data acquisition systems these days have a default sampling rate (which is extremely high) and they let you choose a smaller sampling rate (in which case it just "decimates" as per your specification - Look up MATLAB function by the same name). You should look at the National instruments website (NI DAQs), I used them during my masters. I still remember quite a bit about signal processing, let me know if you find this response useful.