The development trend of modern road lighting

Journal of Lighting Engineering Journal of Modern Road Lighting Liu Yuequn Wang Qiang (Institute of Electric Light Sources, Fudan University, Shanghai 200433) With the development of economy and social progress, the modernization of urban construction has become the first choice for urban planning in major cities. The modernization process of road lighting has also been mentioned as an increasingly important position with the modern development of urban construction. Intelligent monitoring systems have become the inevitable development trend of current road lighting. The rapid development of the city has led to the continuous expansion of road lighting, and the increasing safety requirements have placed higher demands on the lighting design of road lighting, which will lead to a sharp increase in the power consumption of road lighting. Finding ways to reduce energy consumption and save energy has also become a top priority for road lighting design. Therefore, we look at the current development status and trends of road lighting from two aspects of energy conservation and intelligent monitoring.

1 Green lighting Although the energy-saving magnetic ballast optimized for the magnetic core can achieve better energy saving effect, it is far from meeting our energy saving requirements. By adopting the power conversion control scheme, in addition to optimizing the design of the ballast and the electronic trigger itself, the improvement of the way of operating the light source is achieved, and a good energy saving effect is achieved. The energy-saving magnetic ballast designed by this scheme can set the power, and thus achieve the purpose of energy saving. The following is a simplified working diagram (). The conversion controller circuit is realized by a single-chip microcomputer, and can be operated not only by the single operation but also by the intelligent control system mentioned below.

The working mode of the series-type power conversion type energy-saving magnetic ballast of the substation is controlled by the road lighting design of the ballast, which can achieve energy saving effect of about 30%, and at the same time due to its price. Low power, long life (up to 20 years), and strong resistance to grid fluctuations, this power conversion type energy-saving magnetic ballast has been favored by more and more lighting designers and researchers. In addition, their effective life is also improved by reducing the time it takes for the light source and ballast to operate at full capacity. Our power conversion type energy-saving magnetic ballast has passed the scientific and technological achievements appraisal of Shanghai Science and Technology Commission. Let the gas discharge light source be used when the vehicle is scarce. 〖Running in the amount of blishingHouse.Allrightsreserved, http:// 2 The new intelligent monitoring system Traditional intelligent street lamp monitoring system has been in Wuxi, Nanjing, Kunshan, China. Many areas have been applied successively. From the earliest experimental application to the current maturity, there have been more than ten years of operation records, and its modern management operation mode has been paid more and more attention. The new intelligent street lamp monitoring system uses modern technologies such as computer intelligent information processing technology, wireless communication technology, spread spectrum power carrier communication technology and power conversion control technology. In addition to maintaining the basic functions of the traditional intelligent system, it can realize the street lamp. Real-time monitoring and control, effectively ensuring the normal operation of every street lamp, its stability, safety and intelligence have been greatly improved, and its unique energy-saving function makes it the development direction of modern road lighting. .

A schematic diagram of an intelligent monitoring system is given.

The system consists of a monitoring center, several execution terminals, a streetlight front controller, and a master-slave antenna feeder system. The monitoring center includes a computer system, a wireless data transmission station, and an auxiliary device; the execution terminal is composed of a CPU motherboard, a communication interface board, a dedicated wireless data transmission station, and an information collection component; the streetlight front controller includes a control chip and a communication interface board. Power conversion controller and Other components. The monitoring center and the execution terminal are connected by wireless communication, and the execution terminal and the street lamp front controller can be connected by wired communication or spread spectrum power carrier communication. The monitoring center can monitor the working status of each street lamp in real time, including opening, closing, fault and energy-saving operation.

Statistical query, data management, fault collection and alarm, printing reports, etc. It sends control commands to the execution terminal through wireless communication. These control commands can set the switch time of the street light, the mode and start time of the energy-saving operation, and the time interval of the running state detection. Through the feedback information obtained from the execution terminal, the monitoring center can know the working status of each street lamp and the current environmental illumination status, and automatically respond to this. The operating system of the monitoring center can automatically monitor the execution terminal according to preset parameters, or can be manually operated by the staff. All information will be stored in the control center's microcomputer system for regular system performance analysis. The intelligent execution terminal takes the single-chip microcomputer as the core and has intelligent execution capability. The environment information can be collected and the front-end controller of the street lamp can be controlled according to the command of the monitoring center, including the switch of the street lamp and the energy-saving operation.

The front controller can perform switching or energy saving operation according to the control signal of the execution terminal. It can work according to its preset value according to the execution terminal, and can also receive new control signals at any time. Its operation will be fed back to the monitoring center through the execution terminal.

The various operating modes of the intelligent lighting system can be manually or automatically remotely controlled by the monitoring center according to the obtained real-time environmental information, or the operating parameters of the executing terminal and the front-end controller can be preset in advance through the monitoring center. This new intelligent street lamp monitoring system with the introduction of energy-saving concept will increase in the quality and modernization level of urban lighting projects, especially with the concept of green lighting, and will be more and more in the near future. The city is promoted and used. The system configuration can be changed accordingly. This intelligent lighting system can also be applied to many other lighting occasions, including building lighting, landscape lighting, railway stations and stadium lighting.

New lighting technologies and concepts are being applied to road lighting design by lighting designers and researchers. Abandoning the inadequacies of traditional methods and replacing them with high-tech methods of intelligent control and green lighting is an inevitable trend of road lighting. Other advances in road lighting are beyond the scope of this article and are not covered here.

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