Sensors LED lighting intelligent control
Date:2011-06-09 11:16
Status:Be resolved
Question:admin
y into the detection zone, through the Fresnel lens, pyroelectric infrared sensor is sensitive to body temperature and background temperature difference, the signal is collected after the detection system already exists to compare the data to determine whether someone is really into the detection zone such as the infrared source.
Passive infrared sensor has three key components: Fresnel lens filters, pyroelectric infrared sensors and matching low noise amplifier. Fresnel lens has two effects:
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