Street Light Control System Based On Building Block Structure

The high-pressured sodium lamp uses the high-pressured sodium vapor electric discharge and sends out the golden white light, the wave length of radiated light concentrates in the human eye feeling keen scope, It has some advantage such as the high luminous efficiency, few consumes of electricity, the long life, small ultraviolet radiation, passes fog ability and does not tempt the insect. These merits hold the very important position in the domain of illuminate, so it applies widely in the path, highway, airport, dock, station, square and so on. Along with our country green illumination and energy conservation project implementation, to electronic installation's THD, EMI and the energy conservation request is getting higher and higher. Therefore to develop one kind of EMI to disturb, the efficiency slightly high, multi-purpose, durable and the economy practical lighting control system is imperative.The existing street light management system is analyzed in this dissertation and a kind of street light control system based on the building block system structure is proposed. Mainly divides into the central control room, the master part and the extension part. Using SCM Control, Management Group based on the serial numbers of each state of the work lights, remote-control and automatic dimming control. Computer technology will be applied to the design of high-performance electronic ballasts to. Between the central control room and the master realizes the two-way communication through the existing mobile communication network. The master and the extension select the power line carrier method, realizes the two's two-way communication.In master, this dissertation selects the centralism power supply method, the main power source has designed two kind of plans, one kind is based on the three-phase electricity power supply plan, another kind is based on FAN7527B used big power APFC. The way of AC-DC converter to substitute AC-DC converter with 100 electronic ballast in main engine design, only has an operating frequency, reduced EMI. Because transports the public electrical energy is direct-current 600V, therefore transportation on-line non-exchange pressure drop. The transportation voltage enhances is advantageous in reducing the convey electricity, so reduces line's ohmi, enhances the power factor, realizes the green lighting system.In extension, has designed the electronic ballast contravariant part, this dissertation proposed one kind based on chip KA3525 and the NCP5181 mix actuation pattern switching power supply design method, realize the permanent power control sodium lamp through the MCU and the KA3525 chip. And eliminates the acoustic resonance phenomenon through the PWM way's amplitude modulation.Therefore systematic and the central automation supervisory system will begin using based on the building block system street light control system's in energy conservation, it will construct a new platform for the urban green illumination and manages constructs.