This portable security system is built based on Atmega644 microcontroller. It can detect intruders based on their physical presence. The system uses URM37v3.2 ultrasonic sensor which is connected to MCU through rs232 serial communication. To rotate sensor for wide coverage range, the system is equipped with Parallax servomotor. For user interface, there are LCD and keypad wired to PORTC and PORTA of MCU.
How It Works?
The ultrasonic transmitter periodically emits ultrasonic signals into an open area in front of it. A rotating servomotor is used to allow the sensor (transmitter and receiver pair) to cover wide range (roughly 180 degrees). If the signal hits a physical object, it will be reflected back and the receiver part of the sensor will capture it and detect its distance.
For more detail: Ultrasonic Security System using Atmega644 microcontroller
About The Author
Ibrar Ayyub
I am an experienced technical writer holding a Master's degree in computer science from BZU Multan, Pakistan University. With a background spanning various industries, particularly in home automation and engineering, I have honed my skills in crafting clear and concise content. Proficient in leveraging infographics and diagrams, I strive to simplify complex concepts for readers. My strength lies in thorough research and presenting information in a structured and logical format.
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