How does a Motion Sensor Work?
The way in which a motion sensor works typically depends on the type of sensor being used, which often depends on the device that uses the sensor. One of the most common types of sensor technology is an active sensor that sends out bursts of energy, which bounces back in a way similar to sonar. There are also passive sensors that do not send out any type of signal, but instead receive energy from their surroundings to detect motion. Some systems can also use a combination of both active and passive technology to create a motion sensor that emits and receives an energy signal.
Original Article Source Credits: Wise Geek , https://www.wisegeek.com/
Article Written By: G. Wiesen
Original Article Posted on: February 04, 2021
Link to Original Article: https://www.wisegeek.com/how-does-a-motion-sensor-work.htm