Design Of Intelligent Lighting Control System For LED Street Lamp Based On

With the development of smart city construction in full swing, smart street construction as part of the city construction play a important role,too. While the street light as a public facility have a direct impact on people’s travel.,which control system management mechanism is not perfect, resulting in street lighting time is unreasonable, lead to energy loss, so various research institutions of street lamp intelligent control research is in the road.In order to solve the streetlight system existing problems, this paper started from the LED light source replace the traditional light source, and the sensor and ZigBee technology combined in the street lamp,the street lamp formed between the IOT network, fully using of GPRS communication with the server to establish a data transmission service, constitute the easy to management and control of intelligent street lamp system. The system overall architecture is divided into client server centralized controller single street lamp terminal, the client via the address and interface connecting to the server, the server via the Internet and the GPRS module connection, then transmits the data to the coordinator node centralized treatment, every street lamp node in ZigBee network receive and execute commands from the coordinator. Street lamp terminal sensors to collect the lamp, and then the collected data through the reverse link the message back to the client, if meet the fault problems of street lamps, the client can alarm information is feedback to the maintenance personnel.The system on every street lamps are equipped with light and doppler sensors, light illumination sensor according to the collected environmental light brightness, data is transmitted to the ZigBee module, ZigBee module according to the time of the timer set(in different seasons lights off at different times) open street. Doppler sensor has changed the previous night lighting mode, due to the after eleven o’clock at night, pedestrians and vehicles is greatly reduced, we can close all the lights, the use of microwave doppler sensor detection principle, energy-saving effect in after midnight doppler sensor reflected, when pedestrians or vehicles into the detection range(20m), the first street lamp will light up ten minutes to ensure pedestrian access to the second street. At this time the second lamp detection to the pedestrian is lit up, and so on, not only ensure the safety of pedestrians and achieve the purpose of energy saving. System based on LED light source constant current driven features and combining with the ZigBee module comes with PWM dimming module, according to the human visual sensitivity during dimming, when the person who has just entered the dark to light does not adapt to the 30% we select the brightness, when human gradually adapt to the dark state and improve lamp brightness. The purpose of this design is consistent with people’s travel habits and energy saving and environmental protection. Plus Murder will out. the Skynet project, the real-time monitoring of the street is a seamless heavenly robe.Finally, the system through the welding and debugging and programming to control the lights of the hardware circuit, and then on the street function debugging, such as PWM dimming, light sensor in have no light of state and network test, debugging after the show, street lamp terminal are and network coordinator module between information transmission right, remote communication of information using GPRS module needs of street state are transmitted to the host computer monitoring terminal.