Intelligent lighting control system

1. Background
The traditional lighting control system uses the switch or manual knob set in the lamp power distribution circuit to control the on and off of the power distribution circuit and the adjustment of the light. It has the following significant shortcomings: first, the local control method cannot be remotely controlled; second, there is no scene Operation, the group of lights cannot be controlled; third, there is no time control function, the administrator repeats the same work every day; fourth, it is impossible to remotely monitor the status of equipment and lamps, etc. With the continuous changes in lighting system applications, people are becoming more and more intelligent in their lives, and the application situations are gradually becoming more complex and colorful. Simple switch control can no longer complete the required control, so lighting control should also be required. Development and change to meet the needs of practical applications.

2. Introduction
Intelligent lighting control system refers to a distributed remote control system composed of technologies such as computer, automatic control, network communication, wireless communication data transmission, spread spectrum power carrier communication technology, computer intelligent information processing, and energy-saving electrical control. It has the functions of intensity adjustment of light brightness, light soft start, timing control, scene setting, remote control, etc. The control method is intelligent and flexible, so as to achieve good energy-saving effects, limited extension of the life of the lamp, convenient management and maintenance, and improvement of the working environment. Work efficiency; to provide a complete set of informatization construction and intelligent control system solutions for the modern intelligent lighting industry with scientific management level, energy saving and emission reduction, streamlining of personnel, saving operating costs and improving service quality.

Intelligent lighting control systems are mainly divided into urban applications, industrial applications and home applications. Among them, urban applications mainly include landscape lighting, road lighting and public place lighting. Industrial applications mainly include indoor public place lighting, stadium lighting and corporate lighting, and home applications Mainly include the lighting control of the family scene change. This system scheme is an industrial application of intelligent lighting control. Through the combined use of software and hardware, industrial lighting is simpler, more reliable and energy-saving.

3. System introduction
3.1, system structure
The intelligent lighting control system is mainly composed of software platform (B/S architecture), gateway module, local control module (without remote communication function), remote control module, and metering module. It can also be used with third-party systems (such as fire protection systems). Docking.

Figure 1 System topology diagram

l The gateway module and the server adopt multiple remote communication methods such as GPRS, 3G/4G, Ethernet, WIFI, and NB.

l The gateway module and the metering module adopt multiple local communication methods such as RS485, Lora, Zigbee, Can, and PLC.

l The software architecture adopts the B/S architecture (browser/server), which is the current trend of Internet development. You can manage the system directly by entering the URL through the browser without installing software on the client.

l The server can be public cloud, private cloud and local server. Cloud platform is currently the most popular server hosting, mainly using the current Internet of Things control, low cost, easy to operate. In the industrial control field, the server can also be established locally, and the cost is not high, which is convenient for joint control management.

3.2. Software introduction
The intelligent lighting control system uses Internet management methods and Internet of Things technology to manage all lighting control equipment, multiple control methods and real-time data collection, real-time monitoring and tracking of power supply equipment, thereby improving the control and management level of the lighting system. Reduce the maintenance cost of the lighting system; and can save energy and reduce the operating cost of the lighting system.

3.2.1, system function
l Account management: The administrator may create multiple accounts to maintain the entire system according to actual needs.

l Role management: Administrators can create roles and specify functions, and assign them to specified accounts.

l Customer management: System administrators can create customers based on usage, allowing customers to manage their own equipment.

l Area management: Customers can create areas according to the actual environment, up to three levels.

l Equipment management: Customers can manage their own equipment.

l Clock control: realize different control of each lighting area through time setting.

l Longitude and latitude control: Through the longitude and latitude settings, different lighting areas can be controlled every day.

l Group control: realize different control of each lighting area by grouping the equipment.

l Scene control: realize different application control of each lighting area through application scene setting.

l Manual control: The user can remotely control each lighting area manually.

l Emergency lighting control: The system controls the emergency lighting in special areas.

3.2.2, system interface

Figure 2 System homepage

Figure 3 Monitoring Center

Figure 4 Gateway module management interface

Figure 5 Time control management interface

Figure 6 Phone page



3.3. Hardware introduction
3.3.1, communication gateway
As an intermediate device connecting the "cloud" platform and the control terminal, the communication gateway mainly completes the forwarding of communication data and the conversion of communication protocols. For different control terminals, under the premise that the platform function and communication protocol are fixed, only the data communication and protocol conversion of the communication gateway need to be changed to realize seamless connection. Its main functions are as follows:

l There are multiple communication methods with the "cloud" platform: Ethernet, GPRS/NBIOT, 4G (CAT1, CAT4), WIFI;

l Locally have RS485, CAN and other interfaces, and can communicate with local modules in Modbus, Lora, Zigbee, etc.;

l It has parameters such as storage scene and time control, and controls the specified module according to the stored parameters;

l Support data collection from external RS485 or CAN devices;

l With real-time clock RTC

l Multiple control methods: automatic control, time control, scene control, illumination control, latitude and longitude control, and light intensity control.

l When the network is disconnected, the time control task can be run independently, and the execution action data can be cached, and sent to the server after the network is connected

3.3.2, network lighting control terminal
The network lighting control terminal is an integrated product that is compatible with the functions of a communication gateway and a control terminal. It can be directly connected to the "cloud" platform through the network to realize remote control. Its main functions are as follows:

l There are multiple communication methods with the server: Ethernet, GPRS/NBIOT, WIFI;

l Locally have RS485, CAN and other interfaces, and can use Modbus, Lora, Zigbee and other methods to communicate with local modules;

l It has parameters such as storage scene and time control, and controls the specified module according to the stored parameters;

l Support data collection from external RS485 or CAN devices;

l With control of its own relay circuit, it can also control the relay circuit of other modules on the bus.

l With real-time clock RTC

l Multiple control methods: automatic control, time control, scene control, illumination control, latitude and longitude control, and light intensity control.

l When the network is disconnected, the time control task can be run independently, and the execution action data can be cached, and sent to the server after the network is connected.

3.3.3, lighting control terminal
The lighting control terminal is a local control terminal that can only perform local communication control. If remote control is required, data conversion is required through the gateway to synchronize the local state to the "cloud" platform. Its main functions are as follows:

l With remote and local operation control;

l Real-time clock RTC;

l Power-down memory and power-off self-locking;

l Switch status display;

l Multiple control methods: automatic control, time control, scene control, illumination control, latitude and longitude control;

l Standard Modbus or can protocol, private protocol can also be customized;

l Independent control of multiple loops such as 4-way, 8-way and 12-way.

4. Application scenarios
4.1. Community lighting
Community/building lighting, through the use of this solution, can effectively reduce manual labor, so that users can complete the lighting control of the entire building or community in the duty room. At the same time, scene settings are added, which can effectively formulate unintelligible lighting scenes based on actual conditions, thereby reducing energy consumption.

4.2, scenic spot lighting
Scenic spot lighting. In scenic spots or lighting projects, due to the distributed lighting characteristics, the lighting equipment is relatively scattered, which will become very difficult for maintenance personnel to control. The use of this system can effectively formulate scene plans and Remote control can make different lighting schemes and lighting effects as much as possible.

4.3 Street lighting
Street lamp lighting, through the control bus to connect each street lamp in series communication, unified into the intelligent lighting control system, lighting control adjustment for different time periods, can effectively reduce the lighting power consumption, and can track the lighting and energy consumption at the same time Monitoring is conducive to the control and management of street lights.

Industry Classification: Lighting Display

Development platform: STM STMicroelectronics

Delivery form: PCBA, complete machine, software, IOT system

Performance parameters: Internet of Things IOT, remote cloud platform and mobile phone monitoring,

Application scenarios: Underground parking lots, shopping malls, squares, the whole set of solutions and products have been successfully introduced to the market for many years.