In this project we are using ultrasonic sensors for measuring distance from object. Advantage of using ultrasonic sensor’s is we car use in car to check object distance from car. It should be in cars. In this car we will use two motors . we will control motors using microcontroller 89s52. we will get signal from ultrasonic sensors and will display on LCD 16*2.
We will use port 0 for LCD display.
We will use DC geared 12v motors.
We are using 40kHz frequency Transmitter and receiver.
We will transmit data from transmitter then will amplify using opamp circuits. After amplification we will give signal to
Signal detector. We will use IN4148 diode for decoding purpose.
Or schottky dipde In 5819 .
We will then give signal to comparator circuit,
After comparing we will give signal to microntroller.
Microcontroller will get pulse at pin 2 and transmit at pin 3.