DEVELOPMENT OF PIR MOTION SENSOR FOR DETECTING BODY MOVEMENT

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DEVELOPMENT OF PIR MOTION SENSOR FOR DETECTING BODY MOVEMENT


Abstract:

The main aim the project is to provide security. If any persons enter into the home than automatically PIR senses the person and sends information
There is provided an infrared sensor unit for deactivating an electrical appliance when left unattended by its user. The sensor unit includes a passive infrared sensor for sensing the user through a field of infrared light provided within a viewable distance of the electrical appliance. An adjustable timer is in electrical communication with the passive infrared sensor for counting toward a predetermined amount of time when the user is not sensed within the field of infrared light. The sensor unit further includes a controller device which is in electrical communication with the adjustable timer for deactivating the electrical appliance upon reaching the predetermined amount of time.
A Passive Infra-Red (PIR) sensor is an electronic device commonly used in security lighting, and burglar alarm systems. A PIR sensor is a motion detector which detects the heat (infrared) emitted naturally by humans and animals. When a person in the field of vision of the sensor moves, the sensor detects a sudden change in infrared energy and the sensor is activated.

PROJECT OUTLINE

1. A brief introduction to internal architecture of microcontroller.
2. An overview of programming of microcontroller.
3. An overview on assembly language/C.
4. PIR sensor interfacing with microcontroller.
5. LCD interfacing

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INTERFACES USED

1. Serial communication used for downloading the hex code.
2. Sensor circuit interfacing.
3. 16x2 LCD interfacing

SOFTWARES USED
1. A Cross compiler for compiling and linking the code written for AT89C51.
2. Serial communication software for downloading code to AT89C51.
3. Operating system: Windows 2000.





HARDWARE COMPONENTS:

 MICRO CONTROLLER
 POWER SUPPLY
 PIR SENSOR
 PIR SENSOR
 ALARM