Automated Car Parking Sensor Circuit, For people who are just learning to drive a car, parking is one of the hardest parts. Because when parking backwards, the driver must be careful and careful in estimating the position of the car to the parking space just by looking in the rearview mirror. Take it easy, because you can create an electronic circuit that can help you park your car backwards.
The working principle of this circuit is actually very simple. The sensor is only in charge of detecting the distance between the rear bumper and the wall or objects that block it. When the distance is too close, the sensor will issue a notice to the rear bumper of the car does not hit the wall and cause damage.
The series of parking sensor of this car consists of two parts, namely the transmitter and the receiver. Here is a complete car parking sensor circuit scheme that you can make reference to make your own simple car parking sensor.
Picture transmitter circuit scheme:
Picture receiver circuit scheme:
The output of this series is 3 pieces of LED. When the car and wall bumpers are 30 cm apart, then 1 LED will light up. When the car and wall bumpers are 25 cm apart, 2 LEDs will light up. And when the car and wall bumper is 20 cm away, 3 LEDs will light up, and the driver must stop the car.
That way the car and wall will not happen. Oh yes, both circuits use DC voltage of 12 volts. You can take it from a car battery or make your own power supply circuit. What is certain in the circuit using some of the ICs that are easy to find in the store electronics components around you.