Then the servo returns back to 45 degrees and the relay to NC (normally closed) position. When the obstruction in front of the sensor unit is removed the system returns to the normal state. It is similar to a disc brake arrangement that uses calipers to squeeze the pad against the disc which is attached to the axle. The servo arm is mechanically arranged to brake the shaft of the RC car. And simultaneously it energizes the relay to disconnect the motor supply. In the here system the Arduino turns the servo motor from an angle of 45 degrees to 0 degrees. Refer: » Servo motor interfacing with Arduino If the distance is less than the safe range then the system will activate the braking.
Then it checks whether the distance to the object is safe to move forward or the vehicle requires braking. The Arduino calculates the distance to the object from the duration of time taken between the transmitted and received waves.
Then these reflected waves or signals are fed to the Arduino. The ultrasonic receiver which is placed parallel to the transmitter receives the ultrasonic signals that are reflected from the obstacle. An ultrasonic transducer is a component that converts the electrical energy to ultrasonic energy and vice versa the same transducer can generate and sense the ultrasonic signals.
0 kommentar(er)
