The sensor may be placed on a moving vehicle to measure vehicle ground speed. It may also be mounted in a stationary position to measure the speed of a moving object which can be anything from a thin wire passing under the sensor to a vehicle 300 metres away.
The output of the sensor is a pulse with a frequency proportional to the measured speed. The cumulative number of pulses may be used to determine distance travelled or the length of a moving surface.
The speed sensor may be used with many different types of off-the-shelf hardware such as timer/counters or digital tachometers. Or, it can be integrated into electronic control or data acquisition systems.
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