Research On LED Intelligent Lighting System Based On ZigBee

Nowadays,intelligent devices are becoming more and more popular in people’s daily life,and we obviously feel the convenience that smart homes and smart cities bring to our lives.The new generation of people have placed more expectations on the field of lighting,They require that lighting should not only light up the dark,but also have multiple functions such as multi-emotional atmosphere lighting and intelligent services.Compared with the traditional lighting system with single function and complicated wiring,intelligent lighting system with multi-function,such as energy saving and environmental protection,networked management,personalized dimming,humanized control,have become the main direction of the development of lighting field.Therefore,in order to better meet the needs of market development,this paper aims to improve the efficiency of the lighting system and provide people with a more comfortable and diversified lighting experience,it proposes an LED intelligent lighting system based on ZigBee wireless sensor technology.This paper focuses on the following aspects :Firstly,aiming at the inherent lighting mode of the traditional lighting system,this paper uses RGB LED lamp as the light source of the lighting system,and proposes a three channel PWM dimming and color adjustment method,which enables users to match a variety of lighting modes according to their own wishes.A new calculation model for obtaining relative color temperature is established,which makes the system adaptively compensate the light color temperature according to the ambient temperature.At the same time,in view of the excessive waste of electric energy in traditional lighting systems,this paper will rational use the natural light,Considering that natural light is easily affected by the environment,so this paper designs an intelligent dimming controller for on-demand dimming based on the fuzzy control algorithm,which enables the lighting system to autonomously control the brightness of the light according to the intensity of the indoor natural illuminance,eventually achieve the effect of energy saving.Secondly,according to the overall design scheme of the system,the modular design idea is adopted to design the hardware and software for each module of the system.The system hardware mainly includes ZigBee-WiFi gateway,data acquisition node and light control node module,and completes the production and debugging of hardware circuit.The system software is mainly combined with Z-stack protocol stack to build a wireless communication network.By defining the communication protocol and event priority of data transmission between ZigBee coordinator and other node modules,the system network communication function is realized,complete the program design of data acquisition and lighting control nodes.Finally,the upper computer application software is designed by visual studio development tool,which provides a visual interface for users to control and manage lighting lamps remotely,and effectively improves the control efficiency of lighting system.Finally,the system performance test platform was built,which tests the wireless communication performance,personalized lighting function,adaptive adjustment of light color temperature and the energy saving effect under fuzzy control strategy.The experimental results show that the system is in normal communication within 40 meters,and the energy saving degree of the system is 23.2% under the fuzzy control mode,which basically achieves the expected effect.