The LED human body sensor light uses the thermal infrared radiation generated by people. Using the human body sensor element in the lamp holder, through the circular Fresnel filter, the thermal infrared rays are focused on the surface of the sensor element to generate an electrical signal, which is processed and analyzed by the signal processing module, the delay switch module, and the light sensor module. Whether the human body sensor light is turned on or off under the detection value. There are three built-in modules: infrared sensor module, light sensor module, and delay switch module. Among them, the thermal sensor module is responsible for detecting the thermal infrared rays of the human body, the delay switch module is responsible for processing the lighting duration range, and the light sensor module is responsible for detecting the intensity of the light.
In the daytime or in a light environment with strong light, the electrical signal value detected by the light sensor module will control the entire light in a locked state, even if someone passes by the LED human body sensor light, the light will not be turned on. In the dark or at night, the light sensor module will turn on the sensor light in a standby state according to the detected light effect value, and the human body infrared heat sensor module is also activated. If the human body infrared heat sensor module senses that there is a human body moving within its range, it will generate an electrical signal, which prompts the delay switch module to turn on the light, the LED lamp bead is energized and the light is turned on, and the delay switch has a setting within 60 seconds If the person stays within the sensing range continuously, the LED human body sensor light is always on. When the person leaves, the human body sensor module does not detect the infrared rays of the human body, and there is no signal to the delay switch. In about 60 seconds , The LED human body sensor light will automatically turn off. At this time, each module is in a standby state, waiting for the next work cycle.
