Most ultrasonic sensors don't allow you to do this. The magnitude of the signal is not useful information for most purposes. For example, it will be pretty much impossible to tell the difference between a human wearing clothes and a piece of cloth.
Most ultrasonic sensors don't allow you to do this. The magnitude of the signal is not useful information for most purposes. For example, it will be pretty much impossible to tell the difference between a human wearing clothes and a piece of cloth.