Present Situation of Classroom Illumination and Energy Saving Control Technology in Universitie
With the rapid development of national economy and social progress, higher education in the whole society is increasingly concerned about and attention, with the size of the campus of the increase in the number of educators have been expanding, the number of classrooms has increased significantly. In order to make teachers and students have a comfortable teaching and learning environment, regardless of the size of the classroom, facilities and illumination, the school within their capacity, have paid great efforts.However, due to the university’s open management model, and the lack of awareness of the full energy-saving, college classroom in the daytime indoor illumination is still high, there are still lights operating; even if no one or a small number of indoor cases, But also all open indoor lighting. Even if only a few students in the classroom, but the indoor lighting all open, there will be no teachers and students because only a few people and only open a few lights. Long lights everywhere, people do not go out lights everywhere phenomenon. This tangible and intangible waste, to the school’s water and electricity spending has brought a heavy burden. Colleges and universities of water and electricity expenditure accounts for about 1 4-1 5 of the school expenses, electricity expenditure accounted for a heavier proportion. One of the major energy waste is: classroom lighting and air conditioning use. The waste of classroom lighting from the long lights, daytime lighting, unreasonable use of lighting and the old lamp is not timely replacement.In accordance with relevant national standards, the classroom day illumination of not less than 200LUX, night illumination of not less than 150LUX. From the perspective of visual health protection, in less than 150LUX and higher than 600LUX illumination for a long time reading, detrimental to the health of the nitrile. And most of our colleges and universities classroom illumination is higher than the standard, coupled with the waste caused by man-made unnecessary expenditure, from saving resources, social contribution and save college expenses to consider many aspects of energy-saving classroom lighting problems have to mention To the important agenda.In view of the above-mentioned various waste, the university logistics has taken a variety of measures to implement energy-saving programs, including:1, to strengthen teachers and students of energy-saving awareness of quality education;2, the staff specifically for unmanned classroom lighting inspection, night classes after the closure of classroom lighting;3, contracted management of electricity funds;4, the use of computer or microcontroller on the teaching district to implement time-sharing power management.All these methods, we believe that no fundamental solution to the waste of classroom lighting.1, no matter what kind of energy-saving quality of education, because the survival of mankind has not yet been due to the lack of energy and can not live in the situation, saving consciousness; plus many people have wasted is not his own money, saving has nothing to do with. Therefore, even if turned off the lights, energy-saving promotional signs posted more, still have little effect.2, even if the relevant personnel to engage in lighting management, it is necessary to pay the relevant costs, but the inspection and control of the time and the workload of large, can not cover everything; can not do a classroom although only a few students, but all fluorescent lights are open , The management to go to him to turn off several groups of fluorescent lamps, said that energy must be saved.3, electricity contract management, we thought it was a last resort in the energy management approach. We have in the classroom lighting energy management topics, visited many universities to conduct research and found that some colleges and universities as a result of the implementation of the contract, there has been a classroom for the lighting of the double or three tube fluorescent lamp, and some of each fluorescent lamp is broken One or two not repaired, the reason is to save electricity, save money. This method of saving a great impact on the illumination, the students have a great visual impact ah. I have in the above case with a light meter for field measurements, the measured illumination is only 80LUX. Some colleges and universities in the classroom energy-saving has adopted some new energy-saving lamps, the result is to the product quality and service life, saving money.4, the use of computers or single-chip implementation of the teaching district electricity time-sharing control. But only in the teaching time can not solve the phenomenon of unreasonable waste of electricity, including: during the day in the indoor illumination is very good to turn on the lights phenomenon; the case of students in the classroom with very few cases of all Turn on all lighting.Facing the serious waste of lighting in the classroom lighting, the above methods can not be refined from the terminal, we must consider the opening of new technical ideas to solve this waste problem. The author through a large number of social research, site visits, the use of far-infrared technology to implement the classroom lighting of each group of intelligent refinement control. After the Yangzhou University, Shandong University, East China University of Science and Technology, Xi’an University of Architecture and many other colleges and universities practice, received a very satisfactory energy-saving effect, classroom lighting energy-saving rate of 40%. To achieve the daytime indoor illumination standard lights do not open; indoor unmanned lights from the destroy. In the indoor illumination is not required to turn on the lighting, according to the location of students located automatically turn on the corresponding lighting, the realization of the university classroom lighting unmanned automatic control tube bomb. Truly put an end to the waste of classroom lighting in colleges and universities. And greatly extend the life of fluorescent lamps, but also reduces maintenance costs.
Infrared intelligent control switch technical support for the pyroelectric infrared sensing technology, the use of human body temperature as the detection target. When the person enters the detection area, the infrared sensor will be the difference between the body and the space temperature to the signal processing system to implement the control circuit to drive or not, to achieve the specific control of the control object; in the control circuit at the same time joined the light Control door and self-locking circuit, in order to achieve the indoor illumination standards, even if there are indoor or into the force to turn on the lights are not supported, to the maximum extent to eliminate the daytime indoor illumination standards, Waste.In the research of university classroom lighting, we see that in order to let the students have a good learning environment, the school for the classroom illumination are very important to the general standard classroom as a unit, at least assembly of 40 40W fluorescent tube lighting, Illumination of 350LUX or more, the daily working hours of 16 hours, day 11 hours or so, at night for 5 hours, the day power consumption of 16 × 18 × 40 = 12kwh, if the 0.8 yuan kwh tariff calculation, Between the classroom daily expenses of 9.60 yuan. The implementation of far-infrared power-saving mode, during the day from 9 am to 5 pm does not turn on the lights, the energy-saving rate of at least 40%, electricity savings of 3.80 yuan. General 2 million people in colleges and universities, at least 400 classrooms (which does not contain public classrooms), the use of this energy-saving control mode, the daily cost savings of 1,000 yuan (to only 60% of the classroom lights). Can imagine its energy-saving benefits are very alarming, whether it is to the community and the school or have had a contribution and benefit.China is a resource-constrained country, the pressure of resources and the driving force for saving, and not accepted by some people. Including China’s energy-saving colleges and universities, has not really been universal attention. The promotion and application of new energy-saving technologies are slow. In real life, water, electricity waste is commonplace. Production, inefficient resources, or even ineffective use, despite repeated prohibitions. China’s yuan GDP energy consumption is 3.6 times the world average, 9.7 times that of Japan. We are overdrawn the wealth of their children, whether the effective use of resources, energy conservation, not only about China’s economic future, but also about the global economic development. Let us start now, from the university to start, save energy, save resources for China ‘s economic development contribute a modest contribution.