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This circuit is a car parking sensor, circuit takes advantage of the photodiode as the sensor distance. The distance between adjacent sensors should be about 2 cm in the same direction. The workings of this circuit is to detect the distance between the rear bumper cars with objects behind the car, making it easier for motorists to park the car. The distance between objects is indicated with LED lights. At a distance of 25cm LED 1 lit. At a distance of 20cm LED 1 and LED 2 turns on. And at a distance of 5cm LED 2 and LED 3 lights up. At the distance of the object more than 25cm, all LEDs light up. Use filters on the photodiode light sensor to be protected from sunlight interference. Here is a schematic car parking sensors.
Transmitter simple car parking sensor:
Transmitter simple car parking sensor
Receiver simple car parking sensors:
Receiver simple car parking sensor circuit
Circuit boards transmitter simple car parking sensor:
Circuit Board Transmitter Car Parking Sensor
Circuit boards receiver simple car parking sensors:
Circuit Board Receiver Car Parking Sensor
Transmitter and receiver image simple car parking sensor:
On car parking sensor has a drawback in its application, this is because the sensors on the car parking sensor uses infra-red and the photodiode, so that for infra-red beam is sometimes not the perfectly received by the photodiode. It is recommended in car parking sensors can use ultrasonic sensors. You can download the PCB or circuit board from simple parking sensors. For the password: circuitdiagram-schematic.com
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