Discussion on the development of urban lighting monitoring technology Wu Chunhai Wu Guicai Shenzhen Lighting Environmental Management Center (518026) Abstract The urban lighting monitoring system consists of remote control, telemetry, remote signaling and other "three remotes" to "five vision, remote adjustment" The development trend of the direction of the distance. Key words urban lighting monitoring technology development direction Inquire into City Lighting Supervisory Controlling Technology Development Wu Chunhai Wu Guicai (The Lighting Environment Management Center of Shenzhen City, Shenzhen, 518026) Abstract: The paper Inquires that the lighting supervisory controlling has developed to ive remote control ?? including including emote vision and remote regulating? from hree remote control? which includes elecontrol, telemetry, telecommunication? Key Words: city lighting; supervisory controlling technology; development. With the rapid development of urban construction, the development of urban lighting monitoring systems is changing with each passing day. Taking Shenzhen as an example, in recent years, the “three remote†(remote control, telemetry, remote meter) lighting monitoring system that was built and used in 1999 has been updated several times in terms of monitoring scope, monitoring mode, and communication mode. The monitoring range is from street lights. Expanded to building lighting; monitoring mode from text interface to video mode, "remote vision" becomes possible; communication mode from wired communication, CDPD network to GPRS system, at the same time, in conjunction with lighting power saving, "remote adjustment" function is essential. In short, urban lighting monitoring technology has been developed from “three remotes†to “five distant†including “television†and “remote adjustmentâ€. The author hopes to explore the new development of urban lighting monitoring technology through the combination of experience in construction and management, and can be used as a reference for the construction of current monitoring systems. First, remote control: 1, the operator operates in the monitoring center, can achieve group control switch lights, some group control switch lights, single point switch lights. 2. When a fault occurs in the monitoring center, the sub-control point independently switches the lights according to the preset time. 3. The monitoring center periodically issues a clock calibration command to the sub-control point, and automatically switches the light according to the corrected time. 4. The control point device control capacity can't be less than 5, each control quantity has an independent timer, and the turn-on time can be set according to day, week, month and year. 5. The manual switch light command is greater than the time switch light level (the monitoring center does not need to modify the timing time before manually switching the light). 6. On-site conversion manual/automatic switch status. 7. The end device can accept the remote power-off reset of the monitoring center command. The 2nd and 5th points are very important. In the event of a system failure, it is guaranteed to normally switch the lights and maintain the normal operation of the urban lighting system. The fourth point is also essential, and it is crucial for the landscape lighting that lights up during holidays. Second, telemetry: voltage, current, power factor and other parameters. Third, remote letter: 1, feedback switch status. 2. Various fault information of sub-control points: control cabinet power-down information, network fault information, current upper and lower limit alarm, voltage upper and lower limit alarm, switch status abnormal alarm, door alarm. Fourth, remote viewing: The camera collects information on the spot, the video is transmitted through the optical cable, and it is played in real time on the control center screen, and can be controlled and viewed according to the authority on the remote computer through the Internet. Among them, computer remote control and viewing functions are very important, and resources sharing with different departments such as public security and urban management can be realized. V. Remote adjustment: Record the voltage condition, effectively connect with the energy-saving system, and adjust the voltage of the power supply system remotely. Sixth, management functions: 1, system configuration function: the system needs to add, delete the monitored objects and adjust the system parameters, the user can complete the system configuration by changing the system configuration file. 2, security management: the implementation of multi-level operation password and password protection to ensure the security of the remote control operation of the sub-control point. 3, network control: network settings, local or remote workstations (computer or portable computer) management, workstations through the local area network, remote workstations through the Internet access monitoring system, browsing monitoring data. 4. The system displays the status of each sub-control point and the alarm flashing state in the form of an electronic map. VII. Alarm management: 1. In order to reduce data traffic, the bottom device is required to actively alarm, and the monitoring host does not patrol. The bottom device supports the monitoring center to remotely configure alarm and control device related parameters for remote maintenance. 2. The alarm has three levels: pre-alarm, normal alarm and emergency alarm. The alarm indicator is displayed visually and sakura. 3. Alarm inquiry function: It can display the alarm name, category, magnitude, level, time and other information. 4. When an alarm occurs, the short-range siren sound and the warning light flashing alarm, and the sub-control point of the main control screen also flashes. After the alarm is acknowledged, the alarm sound is cleared and the alarm light is still blinking until the new alarm occurs. After the fault is removed, the alarm light stops flashing. 5. Alarm limits (such as voltage upper and lower limits) settings: set by the system administrator according to the site conditions. The first point of active alarm is very critical, which determines the level of communication costs in the future. Through the patrol mode, the time interval of the patrol is short, the information flow is large, and the communication cost is high. Through the active alarm, the alarm is only generated when there is a problem, and the information flow is small, which can save a lot of running costs. Eight, data storage and report statistics and printing functions: 1, the system automatically records alarm history data and general historical data; 2, fault statistics report; 3, operational statistics report (such as switch light time record, etc.); 4, monitoring data ( Voltage, current, etc.) Graphs and statistical reports; 5. Other reports customized according to the actual needs of users. Nine, system performance indicators: 1, DC voltage measurement accuracy: better than 0.5%; 2, other power measurement accuracy: better than 1%; 3, non-electricity measurement accuracy: better than 2%; 4, the alarm accuracy rate is 99.99% 5, when collecting data for a single sub-control point, the time is less than 3 seconds. When the circuit breaker is operated, the average time to turn on (or turn off) a sub-control point is less than 2 seconds. 6. When the clock is calibrated regularly, and the sub-control point automatically unifies the mode of switching lights, the time error of each sub-control point switch lamp Less than 2 seconds; 7. When the group switch command is used to unify the switch light, the time error of each switch point switch light is less than 0.5 seconds. X. Monitoring software and data transmission medium: 1. Advanced, that is, to maintain advanced in 5 years, the equipment and technology used by the system should be able to adapt to future development. 2, scalability, can adapt to the ever-increasing business requirements, only need to add a small number of parts when adding new points. 3, open, can accommodate different manufacturers products, using a universal communication protocol. 4. The request can be easily accessed on the network and remotely connected. 5, GPRS wireless transmission. In order to reduce the traffic cost of useless information, GPRS wireless MODEM should use stable industrial grade products, and the system software of the monitoring center should record the dialing status of MODEM. This part is the most critical part of the entire monitoring system. Without advancement, the system can't keep up with the development speed of information technology. It is likely to be eliminated in a few years. The telecom CDPD network, which is still very advanced in the past few years, is now It is completely replaced by the mobile GPRS system; without scalability, it will encounter bottlenecks when expanding the scope and content of monitoring, and waste construction resources will be redundant; without openness, it will cause technical monopoly and adversely affect the healthy development of monitoring technology.
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