Ultrasonic Sensor Based Security System Using GSM

Ultrasonic is a non-contact distance measurement method that uses sound waves to determine the process material being measured. Ultrasonic transmitters operate by sending a

sound wave, generated from a piezo electric transducer, to the media being measured. The device measures the length of time it takes for the reflected sound wave to return to the transducer. A successful measurement depends on reflection from the process material in a straight line back to the transducer. Distance measurement of an object in the path of a person, equipment, or a vehicle, stationary or moving is used in a large number of applications such as robotic movement control, vehicle control, blind man’s walking stick, medical applications, etc.

This project is used for security in homes and industries using  ultrasonic sensor. The ultrasonic sensor module moves to scan particular area using servo motor. The ultrasonic sensor can detect an obstacle upto 4 meters range. Whenever any obstacle comes in predefined range , it gives sound alert with buzzer. It also displays distance of an obstacle on 16X2  LCD Display. Microcontroller used in project is ATMEGA328 (Arduino UNO). It also sends alert SMS to authroized user.

Software:

• ARDUINO IDE
• EMBDDED CPP CODE
• PROTEUS SIMULATOR

Hardware:

1. ATMEGA328 Microcontroller

2. Ultrasonic Sensor Module
3. 16×2 LCD DISPLAY
4. Transistor Driver
5. Buzzer
6. Servo Motor