The ultrasonic sensor is fixed on top of the servo motor and the servo motor is continuously rotated in fixed position.   In many applications like vehicle control, medical applications, robotic movement control, etc. Distance measurement of an object is used. This can be done using a sensor- Ultrasonic.Measurement using ultrasonic sensors is the cheapest and its reliability among several others isvery high. In this project we are implementing the uses of this sensor in distance measurementin vehicular applications and compare them for a small prototype using Arduino, to providean output for obstacle detection.   Ultrasonicsensors generate high frequency sound waves and evaluate the echo which is receivedback by the sensor. These sensors calculate the time intervals between sending the signaland receiving the echo to determine the distance to an object.In this system we are using Ultrasonic sensor which works as RADAR and is attached to servomotor to rotate in all angles continuously. If it detects any object, it will alert through buzzer.   The controlling device of the whole system is Arduino Microcontroller.Whenever the SR04 detects any object, this information is sent to the Arduino which is programmed to alert through the buzzer in that case.

 

The objectives of the project include:

1. Object detection using ultrasonic sensor
2. SR04 interfacing with Servomotor
3. Audible alerts using Buzzer.

The major building blocks of this project are:

• Power Supply.
• Arduino uno.
• SR04 Ultrasonic sensor.
• Servo Motor.
• Buzzer.

Software’s used:

1. Arduino IDE studio compiler for dumping program.
2. Express SCH for Circuit design.

   

   

Block diagram:    

   

    video: