DIY:一個紅外線感受器實驗

DIY:一個紅外線感受器實驗

A Passive Infrared Sensor (PIR) Project

 

A PIR, or passive infrared sensor, is a device that detects changes in infrared radiation emitted by objects, commonly used for motion detection in security systems, automatic lighting, and other applications. (From Gemini).

A PIR sensor can be used in a microcontroller project to trigger some actions such as a door open, a camera shutter release etc.

In this project, a PIR sensor senses the IR from a hand, sends an input to an optocoupler which triggers the release of power of a red LED light.

紅外線感受器：

背麵：

人體都有紅外線的發射，紅外線感受器能感受到紅外線的存在，

經過處理放大後就以直流1點幾伏的輸出給下麵的線路， 下麵的線路經過光學聯係器讓後麵的發光二極管得到電壓而發出光。

 

https://www.youtube.com/watch?v=3EEiykYvFOM