This Infrared Motion Detectors project is specifically designed and comes with a detailed writeup on one of the numerous applications of Infrared devices. Beginners to electronics will appreciate the construction of this project as it will teach the students of electronics how to identify resistors colour code, identification of capacitor's value, maximum working voltage and its tolerances as well as right soldering method. It includes schematic diagram, parts list, printed circuit board (PCB) pattern layout and a detailed description of each section that makes this device works.
This project describes the concept of Infrared, Operational Amplifiers concept and applications (as comparator, low pass filter, high pass filter, band pass filter etc) and sound generator integrated circuit which gives a ding-dong sound. This document also describes the troubleshooting guide and a quiz to ensure that the concept is clearly understood by the constructor.
There are many applications for the use of the detector. The most common is in the alarm system industry. Some of the new applications are automatic door openers, light switches in hallways, stairways and areas that increase safety for the public. Further applications can be seen in automatic production lines, switching of sanitary facilities, monitors and intercoms. With the ease of installation and the low suspectibility to interference from other forms of radiation, such as heaters or windows, the Infrared motion detectors are ideal devices.
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