How do ultrasonic sensors work and how do we determine the distance from the sensor to the object detected?
What will be an ideal response?
The emitter sends out a high frequency sound pulse, above the human range of
hearing, which strikes objects and then returns to the ultrasonic sensor. The
receiver measures the amount of time it takes the sound wave to return and uses
this to calculate the distance. To determine the distance, we take the speed of the
sound wave, multiply it by the time it took for the wave to return, and then divide
by two as the wave had to travel the same distance to the object and back to reach
the sensor.
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