Design and development of intelligent street lamp solutions

The creation of a smart city is inseparable from the operation of the smart street lighting system. Traditional street lamp control points use street lamp analog controllers, and more than one hundred control points control the switching time of street lamps. Due to the backwardness of management equipment, sometimes manual time adjustment is required, which not only increases the workload, but also has many disadvantages. In order to better change the status quo, the street lamp management department should actively introduce new technologies to improve the street lamp control system. The control range of the new system is flexible, and it can be set and managed in different levels. It can operate intelligently, and can remotely monitor street lamps fully automatically. Real-time collection of street lamp remote measurement of various working parameters to form a report, such as large changes in street lamp current and voltage will automatically alarm, managers can understand the location and data of street lamp faults through the data of the control center, and can also adjust the switching time of street lamps at any time. To adjust the lighting time of street lights, workers need to spend a day to adjust more than 100 control points. Now it only takes a few minutes to complete the adjustment through the control center, and can also remotely adjust the power-saving operating parameters through the power saver.

1. Advantages of intelligent control of urban street lights

In the urban system, the urban street light system is a relatively important system. In the process of intelligent control, the intelligent control technology of midnight lights is often used. There are often no more pedestrians and vehicles on urban roads in the middle of the night, and part of the street lights in the system will be automatically turned off, so as to better realize energy saving of equipment. The intelligent control of urban street lights can significantly reduce the workload of staff without affecting urban lighting. The power consumption and self-loss of street lights can also be effectively controlled, improving lighting efficiency and reducing lighting density.

Intelligent control of urban street lamps has many advantages. First of all, it has strong energy saving. Generally, there are fewer pedestrians and vehicles after midnight in cities, and the demand for street lamp lighting is not very high. At this time, the intelligent control system plays a role, adopts energy-saving lighting, avoids energy waste, and can prolong the service life of equipment; secondly, it is convenient for urban street lamps to manage. Intelligent control of urban street lamps is the application of automatic control technology. It does not require operators to operate on site at any time, and realizes all-round management and monitoring of street lamps in various road sections, and the application of intelligent control systems can monitor the working conditions of urban street lamps in real time. Timely detection of faulty street lamps, timely measures to repair, improve work efficiency and work quality; finally, the degree of informatization and intelligence of the control system is improved. The intelligent control of urban street lights abandons the traditional control mode, adopts more advanced network technology and digital processing foundation, the control technology is more advanced, and can realize the sub-station collection of information data, can collect a large amount of data information, and timely feedback information For the main station, this provides convenience for the intelligent control of street lamps, and also provides great convenience for improving the operation and maintenance of street lamps.

2. Composition and application of urban street lamp intelligent control system

2.1 Analysis of the physical structure of the main control system

The main function of the main control system is to monitor and control the operation of street lights in the whole city. Its composition mainly includes computer systems, projector systems and printers. Participation scope. Under normal circumstances, the main control system includes two main control machines, whose functions are working and waiting respectively. The two main control machines can transmit information through electrical isolation. If the currently running main control machine shuts down or has other failures In the event of a situation, the standby main control machine can be automatically run and put into the control system, which can ensure that the main control monitoring is always online.

2.2 Data transmission device

In the intelligent control system of urban street lamps, the data control system usually uses wired and wireless methods for data transmission. The realization of wireless data transmission mainly relies on wireless GPRS programs, while telephone lines and public telephone networks are based on wired transmission. Achieved. The intelligent control system of urban street lights can realize the data transmission and data association between the main control system and the local system by means of the wireless data transmission system.

2.3 Local control system

The local control system includes control systems such as power distribution cabinets, substations, and radio stations. Each local control system exists independently. The control system realizes independent control of the switch of city street lights. Usually, the information communication between the main control computer and the local control system can be realized by means of the wireless data transmission system, but the information transmission process will be affected by certain factors. For example, communication distance, radio power, and sometimes delay problems when the master controller regulates the local system. The wider the master controller covers, the more serious the delay phenomenon will be. In order to solve the above-mentioned delay problem well during the operation of the urban street lamp intelligent control system, the first task is to divide its control range, and then build the main control station between each area, and then use the Internet and computer control system, Effectively collect and transmit the data information of the main control system, and finally promote the realization of the intelligent control system of urban street lights. The WAN server can store relevant data, realize the management and service of data information, and construct an information management system. Since the system is designed as an open network server, more management workstations can be connected to facilitate the realization of more functions in the urban street lamp intelligent control system, such as maintenance, management, fault inspection and troubleshooting.

3. Analysis of Intelligent Control Technology of Urban Street Lamps

3.1 Control of switching time of urban street lights

According to the longitude of the region, the time curves of sunrise and sunset in the four seasons of the year are calculated, and it is embedded in the intelligent control system of urban street lights. Street light illuminance, adjust the lighting frequency of urban street lights according to the illuminance. This is used to determine the control program of the urban street lamp intelligent control system. From a certain point in time, the street lamp voltage is adjusted smoothly, so that the input and output power of the street lamp and the actual illuminance requirements achieve the best matching state. For different illuminance requirements, Mathematical models of different illuminances are prepared, so as to save electric energy and achieve intelligent control in a double sense.

3.2 Spread spectrum power carrier communication and remote communication technology

The urban street lamp intelligent control system adopts spread-spectrum power carrier communication and long-distance communication technology, utilizes the existing power network to transmit the control system and street lamp status signals bidirectionally, and can realize the control function of the urban street lamp intelligent control system without rewiring, reducing the technical cost. The introduction of computer control technology into the intelligent control system of urban street lamps makes the control of urban street lamps more convenient. At the same time, the technology of single-chip microcomputer is actively applied to ensure the stability and reliability of the intelligent controller of street lamps. The urban street lamp intelligent control system uses GPRS and the Internet as the communication mode of the channel. Since the monitoring points are very scattered and widely distributed, the corresponding data collected by the equipment can be transmitted to the background server of the management center in time through the GPRS wireless communication system for real-time processing. . The communication server is usually a GPRS front-end program written by VB.NET, and exists on a computer together with the WEb server and the data server. This GPRS front-end program can collect the working parameters uploaded on the GPRS module linked to it, and Write it into the data server, analyze the data in the database at the same time, check whether there are unsent instructions, and send the corresponding instructions to the client of the corresponding device in time, so as to realize the control of each site by the control center.

4. Technology required for smart street lamp design

Under the concept of sustainable development, the construction of ecological cities is highly valued by the whole society, aiming to create an excellent social environment and improve the quality of life of social groups, which puts forward higher requirements for the management of lighting facilities. As far as urbanization is concerned, the traditional road lighting management model can no longer meet the needs of modern urban construction and development. In order to improve the effectiveness of road lighting management, taking into account energy conservation and humanized lighting, it is necessary to explore the intelligent control technology model and its application of LED street lamps. very necessary.

4.1 PLC technology

PLC technology is the abbreviation of power line carrier technology. The principle of this technology is that information transmission is mainly realized by power line carrier, signal separation is mainly realized by power line modem, and finally the signal is transmitted to the device. PLC technology is a modern communication With the support of electric wires, the data transmission requirements can be met without re-establishing the network. While ensuring energy conservation and utilization, it brings great convenience for later operation and maintenance. The composition of the power carrier LED street lamp control system includes server, base station controller, street lamp controller and protocol software. Under the current scientific and technological conditions, with the support of GPRS/CDMA and PLC, the road lighting intelligent control system can be constructed.

4.2 ZigBee technology

ZigBee technology is also supported by GPRS/CDMA, and its structure is consistent with that of PLC technology, but its most distinctive feature is the self-organizing network form. Within the communication range of network modules, sub-networks can find each other and build a ZigBee network. To meet the actual needs of interconnection. During the application of ZigBee technology, the realization of remote monitoring of the control system can be promoted through the application value of network technology. ZigBee technology is characterized by short distance and low power consumption. With the support of GPRS technology, it can achieve a good level of intelligence. With the support of wireless data transmission module, the wireless data transmission network platform can operate efficiently. The system monitoring center can control The subnet realizes intelligent wireless control to meet the intelligent control requirements of urban road lighting, so this technology can be applied in the intelligent control system of street lamps.

4.3 DALI protocol technology

Compared with lighting control, the DALI protocol is an intelligent lighting system with strong independence and openness, which can be connected with the building management system in an orderly manner, based on the advantages of flexible structure, easy installation and good economy. , has a good application value in the building intelligent lighting control system, but there are certain limitations in the application in the urban road lighting system.

5. The relationship between intelligent road lighting and energy saving

From a macro level, in the process of urban modernization construction and development, there is a close relationship between urban road lighting and energy saving. On the basis of the special planning of urban road lighting, an energy-saving and efficient road lighting control system is constructed. Apply advanced lighting product technology to meet lighting needs, realize scientific utilization of energy resources, and promote sustainable development of the entire society. The emergence and application of road lighting wireless monitoring and management system can meet the humanized lighting needs of urban roads on the basis of energy saving, and it is an efficient road lighting management mode.

The first normative document of my country's urban lighting work is "Opinions on Strengthening Urban Lighting Management and Promoting Electricity Conservation Work" (Jiancheng [2004] No. 204 Document), which clearly stipulates urban lighting. With the continuous development of society, the economy The level has been significantly improved. The country attaches great importance to the energy-saving work of urban road lighting and has included it in key energy-saving projects. Green lighting design has also become the general trend. Under the concept of sustainable social development, the intelligent control technology of LED street lamps has been widely promoted, and it is trying to channel the traditional third-generation light sources through LED intelligent control street lamps, so as to obtain ideal urban road lighting effects while meeting energy-saving requirements, and promote urbanization. successfully realized.

6. Development trend analysis of urban road lighting intelligent control

(1) Standardization: For the intelligent control of urban road lighting, the development will tend to be standardized in the future, especially in the current market environment where lighting brands are diverse, and lighting control systems have their own protocols and ports. In this case, lighting products cannot be realized. Interconnection and interconnection, when products cannot achieve compatible control, often result in waste of resources. If the standardized development of intelligent control of urban road lighting can be promoted, unnecessary resource consumption will be reduced to a certain extent, the compatibility of the system and internal equipment will be promoted, and the stable development of the intelligent lighting system will be promoted as a whole.

(2) Networking: The operation of the lighting intelligent control system is precisely through the coordination of the power line carrier communication PLC, field bus and optical fiber communication to ensure the flexibility of control. With the continuous improvement of modern science and technology, Internet of Things technology has gradually penetrated into all fields of society, and urban road lighting systems are no exception. Under the action of the Internet of Things, a variety of sensing technologies, network technologies and artificial intelligence technologies are coordinated to build an intelligent world. Therefore, the communication medium for intelligent control of road lighting will also usher in a new development trend, and data transmission will be Faster, convenient and flexible structure, safe and non-interfering, good compatibility, and more convenient for centralized management of lighting systems.

7. Application of intelligent LED street lamp control technology

This article takes a pilot project in a science and technology park in Shenzhen as an example, and installed LED intelligent control street lights in two road sections, a total of 34 lights. As far as the control scheme of the project is concerned, all LED street lamps use an intelligent control system to realize the timing switch, and adjust the timing switch time in real time according to the season. suitable to reduce unnecessary energy consumption. The application of intelligent control technology for LED street lamps is a specialized process, especially the intelligent dimming control is not a simple switch of lamps and lanterns, but a reasonable energy saving on the basis of ensuring night driving requirements, based on the test of color temperature and color rendering index Carry out intelligent dimming to meet the needs of social groups for light. In the application process of LED street lamp intelligent control technology, the construction of LED street lamp intelligent control system is promoted through the coordination and cooperation of servers, billing controllers, and single lamp controllers.

The project has always maintained a good running state since it was put into operation. The wireless communication is stable, the control function is excellent and the operation is real-time. With the support of the LED street lamp intelligent control system, interval switching and intelligent dimming can be realized, which can achieve good energy saving. The effect is high and the operation stability is high.

Summarize

Through the above research, we can see that with the rapid development of cities, the intelligent control technology of road lighting is also constantly improving. While saving energy, it can improve the urban light environment and improve the quality of life of social groups. The scientific application of LED street lamp intelligent control technology can ensure the stable and efficient operation of the road lighting intelligent control system, which meets the overall requirements of sustainable development of modern society, has good application value, and is also of great significance to the shaping of a good image of the city.

The above are the details of the smart street lamp solution introduced by Shenzhen Zuchuang Microelectronics Co., Ltd. for you. If you have smart city project development needs such as smart LED lights, you can trust us. We have rich experience in customized development of electronic products. We can evaluate the development cycle and IC price as soon as possible, and can also calculate PCBA quotations. We are a number of chip agents at home and abroad: Songhan, Yingguang, Jieli, Ankai, Quanzhi, realtek, with MCU, voice IC, Bluetooth IC and module, wifi module. Our development capabilities cover PCB design, single-chip microcomputer development, Bluetooth technology development, software customization development, APP customization development, WeChat official account development and other hardware and software design. It can also undertake the research and development of smart electronic products, the design of household appliances, the development of beauty equipment, the development of Internet of Things applications, the design of smart home solutions, the development of TWS earphones, the development of Bluetooth earphone speakers, the development of children's toys, and the development of electronic education products.