How to adjust the sensing distance of the microwave radar sensor module, the application characteristics of radar sensing fluorescent tubes, and several main factors that affect the sensing distance:
1. The size of the transmitting antenna board. The larger the size, the longer the antenna and the farther the sensing distance. It should be noted here that the three sides of the antenna board are used to transmit vibration frequency signals. The larger the antenna board, the longer the antenna and the longer the transmitted signal. Strong, the farther the transmitting distance is, the farther the sensing distance is, but the transmitting antenna cannot form a four-sided closed loop.
2. The higher the characteristic frequency of the high-frequency triode of the microwave radar sensor module, the greater the high-frequency gain and the farther the sensing distance. Generally speaking, 9GHz high-frequency triodes, such as BFS520-SOT323-N2t and PRF947-SOT323-7N, BFR370F, BFR360F, BFG340F, etc., are 12GHz high-frequency triodes.
3. Appropriately increase the magnification of the post-stage transportation, and correspondingly increase the output frequency shift signal amplification.
4. The transmission frequency is better than the standard 2.4GHz. The gain of the high-frequency triode will decrease with the increase of the frequency. If the frequency is too high, the power of the transmitted signal will decrease, and the receiving sensitivity will decrease.
If it is properly debugged, if a high-frequency triode with a FT of 9GHz is used, when the size of the antenna board is about 20*30mm, the sensing distance will be 3-5m. The antenna size is about 30*40mm, and the sensing distance is 8-10m. When the antenna size reaches 40*50mm, the far sensing distance is about 20m. If you want to reduce the sensing distance on this basis, you can adjust and reduce the gain of the operational amplifier on the rear amplifier board, or change the input drive level to meet the requirements of different sensing distances.
Features of microwave radar sensor module LED light application. The microwave radar LED sensor light is a new type of intelligent lighting product, which automatically controls the light source through the sensor module. In terms of light source materials, LEDs are undoubtedly the ideal choice for incandescent lamps and various fluorescent lamps as intermittent lighting sources that are frequently switched on and off. Its characteristics of long switching life, fast response, high light efficiency, small size and easy control are perfectly reflected. On the other hand, it's smarter and automatically turns on the lights without having to manually switch them on and off.
Microwave radar induction fluorescent tube application features:
Smart Sensing: No need to make sounds (clapping, stomping, etc.). There is no need to disturb the people. When someone enters the detection range of the microwave radar induction dimmer light, the microwave radar sensor module detector works to turn on the light. When the person leaves the detection range, the microwave sensor light remains off.
Smart Delay: After the switch detects each activity of the human body, it will automatically delay a period (the time can be customized), and the next timing will start from the delay time of the next human activity.
Compared with infrared products, the microwave induction lamp has a longer sensing distance, a wider angle, no dead zone, strong penetrating power, and is not affected by the environment, temperature, dust, etc. Adjustable radar induction power supply, can manually adjust the induction time, induction distance and induction power. Various radar sensing can be customized for customers, it is the first choice for intelligent buildings and modern property management.
