LED infrared induction lamp is introduced in detail

Common on the market of induction lamp is mainly divided into LED radar induction lamp and LED infrared induction lamp, they all have their own advantages and ways of working, LED manufacturers today is to share what is LED infrared induction lamp! A, what is infrared leds infrared induction, accurately passive infrared sensors, is to rely on passive infrared sensor to detect infrared and work around 10 um. The car ( Or people) Around 10 um of ir by Fresnel filter enhanced gathered in infrared induction, infrared sensing source usually USES the pyroelectric element, the element in receives the infrared radiation temperature changes will lose charge balance, to release charge, the follow-up circuit can generate alarm signal after testing treatment. The Philippines mud filter according to different performance requirements, with different focal length ( Induction distance) Second, the factors influencing the infrared leds induction distance: 1. Most of the infrared induction LED on the market, using two sensitive yuan is designed, induction Angle is 120 degrees, the window is small, thin, mud filter focal length ( Induction distance) Small, so the induction distance near. Using the latest technology is four sensitive element design, induction Angle is 150 degrees, with large Windows, thus induction distance. 2. Infrared pyroelectric sensor (about cars The human body) Is less sensitive and the movement direction of the relationship is very large. Infrared pyroelectric sensor for radial moving least sensitive reaction, for the transverse direction ( That is a direction perpendicular to the radius) Move the most sensitive; Thus infrared induction LED, when installation should as far as possible and parallel lanes, lamp installation Angle slightly adjusted, probe direction as far as possible need oriented induction area, such induction distance. Note: the parameter is the 8 meters in doing up right in front of the tangent direction. Infrared lamp ride height or less than 2. 5 m, induction area is eight meters in diameter, Radius of 4 meters) Around the ellipse.
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