Abstract
pyroelectric infrared sensor, through which it will receive the weak signals to be larger, and then drive relay, made of pyroelectric infrared sensor switch, thereby controlling the bright lights eliminate.The sensor can detect infrared radiation from the mobile body, as long as the human body into the exploration area, the switch will automatically open.The design can be used as businesses, hotels, shopping malls and residential corridors, staircases, bathrooms, etc. auto-switch, saying "people come to light from the bright lights from the left and destroy" role, both new and convenient, but also to conserve electricity.The design structure is simple and does not itself issued any type of radiation, the device power consumption is very small, inexpensive and good for hiding, wide range of application, it can be extended to achieve practical application.
Keyword: transducer pyroelectric infrared sensor 555chip Amplifier circuit delay circuit
