Discussion on the application of automated lighting system in the current construction of illumination

1Comparative analysis of traditional lighting system and intelligent lighting system

The traditional lighting system uses a manual switch to control the on/off of the lighting fixtures, or through a series of contactors in the loop to achieve remote control. Intelligent lighting system refers to the use of computer technology and other means to automatically control the power lighting, so as to reduce the power consumption of the lighting system and other use costs, while providing appropriate lighting at the right time, appropriate occasions. The intelligent lighting control system generally includes control contents such as clock control, automatic dimming control, regional scene control, motion and static detection control, and emergency lighting control.

Lamp control in traditional lighting systems basically uses manual switches, which rely heavily on people's participation, and the lighting mode is only open and closed. The intelligent lighting control system has strong control functions and many ways. It can realize the pre-setting and memory function of the scene. Just press a key on the control panel to start a light scene, and each lighting loop will automatically change to corresponding status. In the way of lighting, because the intelligent lighting control system uses "dimming module"

Through the automatic dimming of the system, different lighting effects can be obtained in different use occasions. From the perspective of management methods, the management of lighting in traditional lighting systems is artificial management, and the intelligent lighting system can realize energy management automation. Through a distributed network, the lighting of the entire building can be effectively monitored and managed with just one computer. Because the intelligent lighting system adopts light sensing, motion and static detection, time switch, intelligent dimming and other intelligent operation modes, the entire lighting system can operate accurately according to the cost-effective and optimal solution, which not only reduces the operation and management costs. And maximize energy savings. Compared with the traditional lighting control method, it can save 20% to 30% of electric energy. At the same time, the soft lighting system adopts the soft start and soft shutdown technology, which can avoid or reduce the damage of the grid overvoltage to the luminaire, thus prolonging the service life of the luminaire. It is worth mentioning that the intelligent lighting control system is open and provides a standard interface to the BA system for easy integration with the BA system.

2 Intelligent lighting system structure and control strategy

The intelligent lighting control system is divided into the topological structure of the network, which can be roughly divided into a bus type and a star type structure. Both forms have their own characteristics. The former is more flexible, easy to expand, relatively independent in control, and low in cost; the latter has high reliability, simple fault diagnosis and elimination, simple access protocol, and high transmission speed. The structure chosen should be determined according to the specific project.

To determine the structure of an intelligent lighting system, it is necessary to classify and control the controlled objects. Here are two classification principles:

(1) Classified by region. That is, the controlled objects are classified according to the structure of the building structure, and the number of controlled objects, the overall operating state, control parameters and communication requirements in each partition are counted, thereby providing a design reference basis for centralized control and system integration.

(2) Classified by function. That is, the controlled object is classified and statistic according to the monitoring and monitoring requirements. Lighting system control and management includes:

Special lighting such as work lighting, accident lighting, art lighting, and obstacle lights. More detailed can be divided into regional lighting control, dimming control, lighting clock control, scene change control, light sensing, motion and static detection and so on. The subdivision of the function of the controlled object provides a basis for determining the control mode, control accuracy and cost control. In practical engineering applications, the intelligent lighting control system should adopt a distributed and distributed system structure, that is, the dimming control of each unit is relatively independent, and is connected with the building intelligent management system through a centralized manager and an information interface. The intelligent lighting control main system should be a network consisting of centralized manager, main line and information interface, and implement the same control and signal sampling network for each area; its subsystem should be a variety of dimming modules, control Panels, smart probes and other components are constructed to implement specific different control networks for each area. The main system and subsystems are connected by means of information interfaces and other components to realize data transmission.

In the specific engineering design, the intelligent lighting control system should adopt corresponding control strategies according to the lighting requirements of each functional area. For public areas such as corridors, elevators, restrooms, etc., time control mode can be adopted. The normal working hours can be fully turned on, the non-working time can be dimmed, and only a small number of lights can be opened during holidays, and the infrared mobile control mode can also be assisted. People turn on the lights, and people turn off the lights after leaving. For large-area office areas, regional control can be used to turn on or off the lighting of the corresponding area as needed. If there are more entrances and exits, it can also realize multi-point control of the office area to facilitate the operation of personnel. For areas with high lighting requirements such as exhibition halls, lecture halls, conference halls, and multi-purpose halls in the building, while implementing simple loop control, different time, different uses, and different effects requirements should be adopted. Preset scene control mode to realize automatic dimming control and scene switching control of lighting fixtures in various areas in various occasions, so that the illumination in the area is always maintained near the set value. For the lighting of the garage and the entrance and exit area of ​​the garage, time control can be adopted according to the lighting and the use of the vehicle. For example, the day's lighting is divided into morning, noon, afternoon, evening, etc., through software settings, the number of lights on and off is automatically controlled during these time periods to achieve different illumination requirements in the control area. For the equipment room in the building, such as the elevator machine room, the pump house, the underground power distribution room, etc., the lights are usually turned off. Only when the management personnel enters, the static and dynamic detectors will automatically light the lights when the personnel in the room go. After the detector is controlled to operate for a period of time, the lamp is automatically turned off.

3 Conclusion

The intelligent lighting system can not only improve the quality of the building, improve the working environment, improve the working efficiency, but also save energy, save the lamps and reduce the operating cost of the whole system, so that the owners get huge economic returns. With the improvement of people's requirements for living and working environment, intelligent lighting systems will be more and more widely used in modern architectural lighting. After comparing and analyzing the traditional lighting system and intelligent lighting system, and focusing on the control strategy of the intelligent lighting system, this paper designs the construction scheme of the intelligent lighting system based on the ABB I-Bus system and applies it to the actual project. Going and achieving a more satisfactory control effect. Some of the author's views have certain reference value for the design of intelligent lighting control system.

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