Car presence is detected by measuring the disturbance created by the large metal object (of the car body and engine) on the earth’s magnetic field. Highly reliable and does not responds to non metallic objects, including pets and humans.
Although the Magnetic Car sensor is made to detect cars, its sensitivity to earth’s magnetic field (hence, position), makes is usable for other purposes as well. For example, you can use it as a security detection device that sets off an alarm when something it is protecting is moved. It can be used to detect flow of current in a wire. It is not hard to find other potential uses of this sensor.
Single bit open collector digital output to indicate a detection.
|
