Principle of LED human body sensor light
The LED human body sensor light is developed on the basis of the traditional separate corridor human body sensor light, which combines the human body sensor function of the corridor light and the advantages of energy saving, high brightness, environmental protection and long life of the LED light source. It has the characteristics of super energy saving, intelligent control, integration of light source and control module, etc. It completely replaces the traditional corridor human body induction light, corridor sound and light control light and touch switch light.
The working principle of LED human body sensor light can be mainly explained from the following parts:
The LED human body sensor light utilizes the thermal infrared radiation generated by people. Using the human body sensing element in the lamp head, through the circular Fresnel filter, the thermal infrared rays are focused on the surface of the sensing element to generate an electrical signal, which is comprehensively processed and analyzed by the signal processing module, the delay switch module and the light sensing module. Whether the human body sensor light is turned on or off under the detection value. Among the three built-in modules, the thermal sensing module is responsible for detecting human body thermal infrared rays, the delay switch module is responsible for processing the lighting time range, and the light sensing module is responsible for detecting the intensity of light.
First of all, in the daytime or in a light environment with strong light, the electrical signal value detected by the light sensor module will control the whole light in a locked state, and even if someone passes through the range of the LED human body sensor light, the light will not be turned on. When the light is dim or at night, the light sensor module will turn on the sensor light according to the detected light effect value, and it will be in a standby state, and the human body infrared thermal sensor module will also be activated.
If the human body infrared thermal sensing module senses that there is a human body moving within its range, it will generate an electrical signal, which will prompt the delay switch module to turn on the light, and the LED lamp beads will be energized to light up. The delay switch has a setting within 60 seconds. If the person continues to be within the sensing range, the LED human body induction light is always on. When the person leaves, the human body induction module does not detect the infrared rays of the human body, and there is no signal to the delay switch, within 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 working cycle.
The LED human body sensor light developed and designed based on the working principle of human infrared, the most intuitive functions in use are:
1. It is not bright when it is open in white or when the light is strong.
2. When the light is dark at night, the lamps are on standby.
3. In the standby state, when the human body enters the sensing range, the LED human body induction light is turned on.
4. If a person moves within its range, the light is always on.
5. When the person leaves, the LED human body sensor light will automatically turn off within 60 seconds.
Such smart lamps bring the benefits to people that the lights are on when people come, and the lights are off when people leave. Following the mature application of the LED light source, the LED human body sensor lamp is designed with LED as the light source and the human body sensor device, which adds the powerful feature of green energy saving.
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