On the design of intelligent lighting control syst

Discussion on the design of campus intelligent lighting control system

Abstract: lighting control is more and more widely used in the field of building intelligence. This paper briefly describes the characteristics of intelligent lighting control system and the design idea of campus lighting control system

key words: intelligent lighting control energy-saving management introduction: the construction of new campus should also adapt to the development of this network era and introduce the concept of intelligence. In the traditional building automation system, it generally includes only integrated wiring, computer network, security, fire protection, closed-circuit television monitoring and other subsystems. However, in recent years, with the development of economy and the progress of science and technology, people have put forward higher requirements for energy conservation and scientific management of lighting fixtures, which makes lighting control more and more important in the field of intelligence. In the upsurge of the construction of new university campuses, major universities and their builders have also realized the importance of intelligent lighting. Compared with commercial buildings, the proportion of high-power power power and refrigeration equipment in university campuses is less, while the proportion of lighting fixtures is more. The use of lighting control system can better reflect its advantages in energy conservation and management, and improve the scientific management level of the school. Taking Guangzhou University Town as a reference, the author expounds his own design scheme of school lighting control system. 1 advantages of intelligent lighting control system 1.1 to achieve good energy-saving effect, extending the service life of lamps and lanterns, energy saving is the biggest advantage of lighting control system. The traditional working mode of lighting in public areas of buildings can only be to turn on the lights during the day and turn off the lights at night. After adopting the intelligent lighting control system, we can subdivide the time period and working mode according to different occasions and different people flow, turn off the unnecessary lighting and turn it on automatically when necessary. At the same time, the system can make full use of natural light and automatically adjust indoor illumination. The control system realizes a variety of lighting working modes in different working places. While ensuring the necessary lighting, it effectively reduces the working time of lamps, saves unnecessary energy expenditure, and extends the service life of lamps. 1.2 improving the working environment and improving work efficiency. A good working environment is a necessary condition to improve work efficiency. Reasonable selection of light sources, lamps and lighting control systems with superior performance can improve the lighting quality. Intelligent lighting control system has two control methods: switch and dimming if the comparison voltage of two operational amplifiers is abnormal, which can effectively control the average illumination value of various lighting places, so as to improve the uniformity of illumination. At the same time, the system can automatically adjust the illumination according to different time periods and people's different needs. 1.3 realize a variety of lighting effects and lighting control methods, which can make the same building have a variety of artistic effects and add a lot of color to the building. In modern buildings, lighting is not only to meet people's visual shading effect, but also should have a variety of control schemes to make the building more vivid, simple to operate, more artistic, and give people rich visual effects and beauty. In a building, outdoor landscape lighting and floodlighting can be preset as spring, summer, autumn and winter, weekend holiday scenes, and large-scale celebration scenes; Different scenes such as meeting, projection and rest between meetings can be preset in the reception hall and conference room. Under the traditional manual control mode, it is difficult to achieve such a variety of lighting effects. 1.4 improve the management level. The intelligent lighting control system is a system mainly based on automatic control and supplemented by manual control. In general, the lighting system automatically realizes the switching and dimming functions without the participation of anyone. It not only greatly reduces the number of managers, but also eliminates the irregular switch caused by human factors, which affects the normal teaching and living order of the school. 1.5 good investment income effect the intelligent lighting control system can save energy and the use of lamps, and effectively save the expenditure of electricity and management costs. According to the operation experience of general office buildings, the energy-saving effect can reach more than 40%, and the energy-saving effect of general shopping malls, hotels, subway stations can also reach 25% - 30%; The school has not received specific statistical data in this regard, but according to the analysis, the effect is still satisfactory. 2. The basic component of Campus Lighting Control System 2.1 the main control center system uses a general-purpose computer as the main control center to communicate with the network through the rlink communication device. Programming, monitoring, fault alarm and other functions can be directly realized on the computer. The computer on the local area can also realize the monitoring function through the main control center. 2.2 the main control center of the rlink communication device and the communication hub of each unit of the system network realize rs485/rs232 signal conversion, and have the function of system self diagnosis and automatic fault alarm. 2.3 lighting controller the core part of intelligent lighting control system is composed of control module circuit, drive module circuit and special self-locking relay for lighting. Each lighting controller can work independently or be controlled by the computer center. The shutdown of the main control center or the interruption of communication will not affect the normal operation of the controller. The controller has various specifications, and a single controller can control up to 48 circuits. Up to 500 controllers can be connected in one system. 2.4 programmable switch intelligent weak current switch has various specifications such as 1~8 keys. The switch itself uses 24V safety voltage, so there will be no danger of leakage, and there will be no ignition and arcing during switch operation, so as to ensure safety. The circuit controlled by each key on the programmable switch is programmed and set by the computer. A single key can control multiple circuits, and the combination can be changed at will according to the changes of the situation, which is flexible and convenient to use. 2.5 the dynamic sensor uses the principle of infrared or ultrasonic to automatically identify whether there is someone in the room and send a signal to the controller to realize the dynamic control function of "the light is on when people come and the light is off when people go". 2.6 the core component of the illuminance sensor is the optocoupler, which can adjust the brightness of indoor lighting by sensing the illuminance of external natural light sources, so as to realize the functions of intelligent detection and intelligent adjustment. 2.7 additional equipment required for communication device control. The user dials directly and controls the lighting switch according to the prompt tone. Intelligent lighting control system diagram