On the design of campus intelligent lighting syste

2022-07-25
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Abstract: lighting control is more and more widely used in building control. This paper is such a design example

key words: campus intelligent lighting system building control Untitled Document l introduction the construction of a new campus should adapt to the development of the network era, and the concept of intelligence should be introduced. In the traditional building automation system, it generally only includes 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 saving 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 saving 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. 2 advantages of Intelligent Lighting Control System 2.1 to achieve good energy-saving effect, extending the service life of lamps and lanterns is the greatest advantage of lighting control system. The traditional lighting mode for public areas of buildings can only be to turn off the lights during the day and turn on 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 costs, and extends the service life of lamps. 2.2 improving the working environment and improving the working efficiency a good working environment is a necessary condition for improving the working efficiency. Reasonable selection of light source, lamps and lighting control system with superior performance can improve the lighting quality. Intelligent lighting control system has two control methods: switching and dimming, 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. 2.3 to achieve a variety of lighting effects, a variety of lighting control methods 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 light and dark effects, but also should have a variety of control schemes to make the buildings more vivid, more artistic, and give people rich visual effects and aesthetic feeling. In a building, outdoor landscape lighting and floodlighting can be preset as four seasons of spring, summer, autumn and winter, weekend and holiday scenes, and large-scale celebration scenes; The reception hall and conference room can be preset with different scenes such as meeting, projection and inter meeting rest. Under the traditional manual control mode, it is difficult to achieve such a variety of lighting effects. 2.4 important use high management level intelligent lighting control system is a system mainly based on automatic control and supplemented by manual control. Under normal circumstances, 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 occurrence of irregular switches due to human factors that affect the normal teaching and living order of the school. 2.5 good investment income effect the intelligent lighting control system can save energy and the use of lamps, and effectively save electricity and management expenses. 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. 3 basic component of Campus Lighting Control System 3.1 the main control center system uses the 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 bureau can achieve the accuracy required by flexible packaging by adopting general lead screw and trapezoidal lead screw. The computer in the accuracy domain can also realize the monitoring function through the main control center. 3.2 the communication hub between the main control center of the rlink communication device and each unit of the system network realizes RS485/RS232 signal conversion, and has the system self diagnosis function and automatic fault alarm function. 3.3 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 a variety of specifications, and a single controller can control up to 48 circuits. Up to 500 controllers can be connected in one system. 3.4 the programmable switch is an intelligent weak current switch with various specifications such as keys. The switch itself uses 24V safety voltage, so there will be no risk of leakage. 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. The combination can be changed at will according to the changes of the situation. It is flexible and convenient to use. 3.5 the dynamic sensor uses the principle that infrared is mainly the three major fields of plastic daily necessities for agricultural plastic packaging or ultrasonic wave to automatically identify whether there is someone in the room and send a signal to the controller, so as to realize the dynamic control function of "people hope that the above sharing can help you correctly use this device, the light is on, and the light is off when people walk". 3.6 the core component of the illuminance sensor is the optocoupler, which can adjust the brightness of the indoor lighting by sensing the illuminance of the external natural light source, so as to realize the functions of intelligent detection and intelligent adjustment. 3.7 additional equipment required for communication device control. The user dials directly and controls the lighting switch according to the prompt tone. 4 characteristics of campus lighting control lighting control has been practiced in the field of building automation and landscape lighting at home and abroad. The design of the university town also refers to the design principles and ideas of the original building automation. The design goal is to highlight the characteristics of intelligent lighting control system, scientific management, energy saving and operation cost saving. Reasonably subdivide control circuit and reasonably set

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