Research on Wireless Communication Monitoring System of Urban Street Lamps

(City Street Light Management Office Zip Code 224000) and the main functions of each system are elaborated. It is concluded that the wireless communication monitoring system is reliable and stable, and can monitor the running status of the street lamp system and related data in real time, thereby realizing effective monitoring of the street lamp system.

Foreword: As a product of social and economic development, urban street lamps belong to urban infrastructure construction. Urban street lamps enrich the nightlife of the city, providing a great convenience to the night halls, and playing a hateful role in beautifying the city's night scenes, ensuring night-time security and traffic safety. Urban street lights are an important part of urban construction. In part, it has received more and more attention from the government departments and extensive attention from all walks of life. Doing a good job in urban streetlight construction plays an active role in reducing traffic accidents, preventing and reducing crimes, maintaining city image, and beautifying the environment. Pay special attention to wireless communication monitoring systems for urban street lights.

At present, most of the monitoring systems for urban street lamps in China are single communication methods. Some select private network communication for radio stations, and some use wired solutions, CDPD technology or GPRS/GSM office communication. Most of these communication technologies are widely used and widely applied to urban street lamp management systems, but various problems cannot be avoided in the application process. Therefore, the advantages of various communication technologies should be fully utilized, and wireless communication methods combining multiple communication technologies should be adopted.

First, the main component of the structural supervision level of the urban streetlight wireless communication monitoring system is the remote monitoring system. The user connects to the main monitoring system through the WAN or the local area network to obtain the current situation and monitoring system of the street lamp in time. According to the access route, the supervisory system can be divided into two types: local area network access and wide area network access. Under normal circumstances, the staff of the street lamp management office can view the operation of the street lamp through the local area network, but cannot send instructions to the monitoring room of the main control room. The administrator at the upper level uses the WAN to view the real-time information of the street light or the past information of the street light transportation hall, and can send instructions to the monitoring center of the main control room.

The main components of the monitoring level are the database management system, the main control system, and so on. The monitoring level is used to control and manage the RTU stations distributed in the wide area, and collect the street light scene information of each RTU site to form a distributed or centralized control system. The main control system of the control system and the existing main control system Consistent. Monitoring uses two industrial control levels, and information exchange uses 100M Ethernet and database management systems. Unlike existing systems, the new database management system provides remote access, and remote clients can view the latest or historical database information using the network.

3 The main components of the on-site control level field control level are the RTU, the switching device and the detection device. The on-site control level directly controls the street light equipment into the hall, and timely checks the relevant parameters of the street light status. The field control level usually constitutes a wide-area distribution control of a city, and its RTU station not only supports radio station communication, but also supports various communication methods such as SMS communication and GPRS synchronous transmission.

Second, street lamp monitoring system communication interface Street lamp monitoring system communication interface has two communication systems: field control level and monitoring level communication interface, also known as interface I: monitoring system and monitoring level communication interface, also known as interface IL interface I not only Support SMS/GPRS communication provided by telecom operators, and also support private network communication of radio stations. Interface I also develops an agreement for the exchange of information between the on-site monitoring level and the monitoring level.

Like interface I, the interface also defines the relevant agreements for the exchange of information between the supervisory and supervisory levels. The interface supports two communication methods: a wide area network based on Web services and a communication method of a local area network. The interface interacts with the information through the intranet or the Internet.

Third, the structure of the wireless communication system in the urban street lamp monitoring system The structure of the wireless communication system of the urban street lamp monitoring system mainly consists of three parts: the communication processing module, the blocking or monitoring module and the communication module.

1 Communication Processing Module The communication processing module provides related communication services for the cutting or monitoring module by means of the services provided by the communication module. In this process, the interception or monitoring module can implement the barrier-free communication with the monitoring terminal by any means of radio, SMS or GPRS without any modification. And as long as the relationship between the layers is not changed, the communication module will not break or monitor the module even if there is a change.

2 smashing or monitoring module smashing or monitoring module can provide the operator of the hall with a hateful interface into the street light switch operation. This module can cut off the information sent by the RTU site and automatically generate various forms of alarm information to properly handle the faulty report. Data access and exchange with the database on the server are completed by means of the local area network and the IP or TCP protocol of the computer. It can also complete the local backup of critical data on the server to prevent the monitoring system from crashing when the network or server fails.

In the communication module, GPRS communication, radio communication, IP or TCP communication, and SMS communication can be organically combined. It realizes the communication function: (1) Communication between GPRS and remote measurement and control terminal is realized by means of GPRS module: (2) The first information of the radio station is realized by RS232C serial port: (3) IP or TCP communication is realized by IP/TCP protocol: (4) Communication between SMS and remote measurement and control terminal by means of SMS Module implementation.

Fourth, the function of each system 1 set the timetable setting of the street light switch light The function monitoring center can automatically set the annual switch light time according to the latitude and longitude of the city, and can also be corrected. The monitoring center sends the switch light schedule to each RTU site in the form of a broadcast command, and the station switches the lights according to the schedule.

2 pairs of street light switch control function The control function of the switch light includes three modes: remote switch light control, RTU station automatic control and light correction automatic control.

The monitoring center can call the RTU station to obtain the switch status and fault parameters of the modified street light. In this way, the status of the street light switch and the device of each RTU site are faulty.

4 Telemetry function After each RTU site receives active calls from the monitoring center (including random detection and patrol two forms), the collected data is uploaded to the inter-monitoring center in time. The monitoring center makes a historical database based on these data, and can estimate the failure rate of the street lamp and the lighting rate.

5 The telemetry freeze function host can take the form of a broadcast command, so that each RTU station can store the collected current, electric E and other data at the same time. Then the monitoring center calls each RTU station one by one, and the RTU station immediately uploads the frozen data. After the monitoring center obtains these data parameters, it can accurately calculate the bus loss and total power of the system.

6 Fault alarm function The monitoring center database uploads the information to the RTU site according to the preset alarm conditions, and obtains the data alarm information, and transmits the information to the main control computer for displaying and entering the hall voice alarm.

7 Function to change the working mode of the RTU station The working mode of the RTU station includes the working mode of the end lamp, the working mode of the midnight light, the alternating energy saving mode, etc. The monitoring center can issue commands to the RTU station to change certain working modes. Choose the best way to work.

V. Conclusion Wireless communication monitoring system for urban street lamps and scientific research achievements in various technical fields, such as communication technology, computer technology, automatic monitoring technology, etc. The application of these technologies is an important symbol of urban modernization, realizing Ding computer system to urban street lamps. Centralized management and monitoring, and have a great role in promoting energy consumption, environmental protection and urban public safety. Achieve an organic combination of economic and social benefits.

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