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Analysis on the new idea of intelligent lighting LED wireless light control syst

From: Data:14/08/2016

with the maturity and development of LED, LED in addition to replace the traditional lighting systems, but also with different technology, make different applications. In today's market, we are not difficult to find a number of wireless lighting control system, Wi-Fi system, to achieve the wireless switch, light and color mixing, etc.. Hongkong applied science and Technology Research Institute on the basis of the development of two technologies, respectively, is used for LED lighting system wireless mobile sensor module and the application of LED hybrid real-time positioning system.

wireless mobile sensor module

mobile sensor products on the market mainly in the passive infrared (PIR) and microwave Doppler (Doppler) principle as the basis of technology. Passive infrared sensor itself does not emit infrared light beam, but by virtue of the heat source of the sensor to move and trigger. Because of the outdoor temperature and climate change and other external factors may lead to passive infrared alarm, so passive infrared usually in indoor closed environment.

Doppler principle is to transmit high frequency microwave, and then through the receiving module to detect the frequency of reflected wave. If there are objects moving in the area, the frequency of the reflected wave will be slightly changed, so as to judge whether the object is moving. The Doppler principle is not influenced by the sun exposure and temperature change, so it is suitable for outdoor and indoor use.

Hongkong Institute of Technology (materials and Construction Technology Group) in 2011 to develop a dedicated transceiver in the structure of the Bee Zig module using the Doppler principle of wireless mobile sensor.

1 light control mode: sensor analysis signal through the wireless mesh network to switch, light control, etc..

2 movement sensing mode: the sensor from the most suitable working channel to launch the microwave, and to receive the reflected wave to be processed. As the human body moves toward the sensor, the greater the amplitude of the signal as the human body approaches the sensor.

3 detection and avoidance of interference modes: the sensor through the signal intensity of different working channels within the frequency band, to select the most suitable work channel, greatly reducing the possibility of interference.

the entire light control system is controlled by the software, without additional hardware costs. The intelligent calibration function can help to improve the sensitivity of the sensor and reduce the error of the sensor. Ultra low power consumption characteristics can be extended battery life.