1 Current status of urban led landscape lighting control system

(1) The urban led landscape lighting control system lacks unified planning, specification and standard, and the construction is disordered and independent, leading to decentralized management, untimely response, great waste of resources, difficult coordination and other problems.

(2) The protocol and interface standards are not unified, the system cannot be interconnected, data and information resources cannot be shared, and other management platforms in the smart city cannot be connected for integrated management.

(3) The function is single, which only stays at the level of simply switching on and off the lights according to the time requirements. It is impossible to achieve intelligent management and control through information collection, command transmission, information processing, information decision-making, authority management, light control management, etc; The scene is also inseparable from the "ordinary days", "festivals", "major festivals" and other traditional switch scenes, which cannot meet the requirements of refined management of landscape lighting control and fine changes in the dynamic level of effects.

(4) The light control is also just a centralized control era of "switch+play" dual "remote controller", which cannot meet the requirements of the light display effect on timing, change, level and other functions.

(5) The platform has no scalability and cannot interact with big data such as security alarm, environmental monitoring, digital city management, and intelligent transportation, as well as share resources, to achieve more management functions of smart cities.

2 The development stage of urban landscape lighting control The development stage of urban landscape lighting is divided into four stages: primary stage, intermediate stage, advanced stage and top stage.

(1) Primary stage: "patching" is mainly for "lighting up". The control equipment in this stage is mainly composed of AC contactor, time relay and other equipment, as long as it is lit up.

(2) Intermediate stage: local control of the system. By using control methods, remote telemetering can be realized, including feedback of status information such as short circuit breaker, AC contactor, door switch, power supply, manual switch, etc. to the control center, and remote setting or adjustment of operating parameters of controlled equipment can be realized.

(3) Advanced stage: that is, during the current urban landscape lighting construction period, the software system and intelligent hardware equipment are used to realize the "five remote" functions of remote signaling, telemetry, remote control, remote adjustment and remote viewing; Information management platform functions integrating data collection, processing, storage, statistics, summary, analysis, release and application; It has such business functions as equipment operation status display, data statistics and analysis, alarm positioning map display, resource allocation and external approval; Operation monitoring system with intelligent and visual management of facilities; It has the functions of emergency plan management and emergency event management; It has such functions as accurate calculation of lighting rate, power quality analysis, leakage detection, self running function of monitoring terminal, automatic timing function, single lamp monitoring, remote meter reading, multi type terminal access operation, asset management, GPS positioning, query analysis, statistics and printing.

(4) Top level stage: This is the highest stage of the development of urban landscape lighting control, that is, based on the characteristics of high bandwidth and low delay of the new generation of communication technology, establish an ultra-high definition monitoring network, grasp the dynamics of lighting equipment in real time, present the night scene effect without loss of damage, ensure the reliability of monitoring instructions without delay, form a smart city big data basic database, establish an algorithm model, and conduct in-depth data mining through in-depth machine learning Analyze trends, provide decision-making, etc., provide reliable data basis and technical support for industry supervision and government decision-making, meet the requirements of urban landscape lighting control and management, and realize the functions of urban landscape lighting fine and intelligent management.