Working principle of infrared induction lamp

To understand the working principle of infrared induction lamps, we first need to know that the main component of infrared induction is the human body pyroelectric infrared sensor. Human body pyroelectric infrared sensor: The human body generally has a constant body temperature, usually around 37 degrees, so it emits infrared radiation with a specific wavelength of around 10UM. This passive infrared probe works by detecting the 10UM infrared radiation emitted by the human body. The infrared radiation of about 10UM emitted by the human body is enhanced by a Fresnel lens filter and focused on the infrared sensing source.

When choosing an infrared sensing source, pyroelectric elements are usually used. These elements lose their charge balance when they receive changes in the temperature of human infrared radiation and release charges outward. After the circuit is detected and processed, it can trigger the switch action. When someone enters the sensing range of the switch, a dedicated sensor detects changes in the infrared spectrum of the human body, and the switch automatically turns on the load. If the person does not leave the sensing range, the switch will continue to be turned on; After the person leaves or there is no action in the sensing area, the switch will automatically turn off the load with a delay time (adjustable TIME: 5-120 seconds). The infrared sensing switch has a sensing angle of 120 degrees, a distance of 7-10 meters, and an adjustable delay time.