Discussion on Lighting Design and Healthy Lighting Design Chen Zhonglin, Liu Wei (Chongqing University School of Architecture and Urban Planning, Chongqing 400045) The method was discussed.
It is useful. Since the energy of infrared photons is much smaller than the energy of ultraviolet photons, it mainly gives people a heat effect, so in the lighting project, only the influence of ultraviolet rays on human health can be considered. As we all know, the role of ultraviolet light on humans is significant. When excessive or long-term exposure to ultraviolet light, it can cause skin cancer; it can also cause ultraviolet eye diseases, such as cataracts; and inhibit the body's immune system, so that the body can not produce normal The stress response causes the disease to occur.
The relationship between fluorescent lighting and melanoma has been studied.
It is found that lighting has a greater impact on human health. In short, people require lighting projects not only to save resources, to protect the environment, to meet the physiological and psychological comfort requirements of people, but also to eliminate the pathogenic factors, which is conducive to physical and mental health and play a role in health care lighting.
The human society is eager to move forward healthily and healthy lighting has emerged. The so-called health lighting is a kind of lighting that is conducive to the healthy development of human, environment and society. Compared with green lighting and comfortable lighting, health lighting emphasizes that lighting is good for people's physical and mental health. At the same time, healthy lighting preserves the effective methods and results of existing lighting, so healthy lighting is green lighting, comfortable lighting and health care. Reasonable integration of lighting. Therefore, the health lighting system is a very complicated lighting system, and it is necessary to adopt a novel method for healthy lighting design.
Lighting design is first to choose the lighting method, health lighting should use the ambient lighting method, which is different from the current general lighting, local lighting, hybrid lighting, partition general lighting. The so-called environmental lighting side 1 health lighting China's lighting electricity consumption accounts for about 10% of the total power generation, while three-quarters of China's electricity is provided by thermal power plants, burning coal and oil, a large amount of C2, 2 and soot emissions This can cause serious greenhouse effect, acid rain and serious environmental pollution. According to research, half of the global warming is caused by (1)2, and 80% of the C2 comes from burning coal and oil. Moreover, it is estimated that oil can be mined for about 50 years, coal can be mined for about 300 years, and resource depletion and environmental pollution have seriously threatened the healthy development of human society. Lighting science and technology, like other sciences, is making great efforts to save resources and protect the environment. Since 1991, countries are developing green lighting, which aims to promote the use of energy-efficient lighting products, encourage the use of energy-efficient lighting design and technology, improve lighting quality and protect the environment. From this point of view, green lighting is a kind of high-quality energy-saving lighting and lighting that is conducive to environmental protection.
In today's highly information age, visual work objects are changing, tension is increasing. When people pursue high efficiency, they are also pursuing the comfort of life and work, and demanding that lighting is beneficial to people's psychological and physical comfort. Work, study, and living places become a place of satisfaction, enjoyment, and health. This kind of mentally and physiologically comfortable illumination is called comfortable lighting.
Light is the necessary living condition for all living things. It is precisely because of the stimulation of light that animals form eyes in the long-term evolution and evolution. Although the human eye can only feel a small part of the electromagnetic spectrum, the ultraviolet rays and infrared rays that cannot be felt by the human eye are combined with the general lighting and the work lighting on the ceiling, and the lighting method combining the desk lamp and the work lamp. . It can form a personalized light environment, making lighting more suitable for individual lighting, making people feel comfortable physically and psychologically, and achieve comfortable lighting. To this end, it is necessary to use the changes in light quantity, directivity, diffusivity, light color, etc. to meet people's lighting needs. The flexibility and change of the lighting can be changed, that is, the four-dimensional lighting means is different from the fixed lighting currently used. of.
The essence of comfortable lighting is individual lighting. To this end, an intelligent lighting control system must be adopted to make the human-machine interface friendly and to adjust the personal light environment. This is different from existing manual or automatic lighting controls. Only by using intelligent lighting control system can meet the needs of different ages, genders, personalities, hobbies, physiological conditions, health conditions and work content, so that the lighting conforms to people's biological rhythm changes, which is beneficial to people's physical and mental health and achieve healthy lighting purposes. .
The current lighting design mainly considers lighting problems such as illumination, glare, uniformity, shadow, stability and flicker on the surface, and the health lighting design must not only consider these problems, but also deal with ultraviolet radiation, spectral composition, and light color. The physiological and psychological effects of color temperature and so on. The effect of ultraviolet light on human health is very obvious: it not only can play a bactericidal effect, but also has anti-caries and other therapeutic effects under the proper amount of ultraviolet radiation. However, after excessive or prolonged exposure, skin cancer may occur, causing ultraviolet rays such as cataracts, which may also inhibit the immune system and cause disease. Therefore, the primary task of health lighting is how to use semiconductor films such as Ti2 to reduce the ultraviolet light in the illumination source and eliminate the disease-causing factors. In addition, health lighting should also deal with the psychological effects of color: color hobbies, color memories, color emotions, color associations and symbols; color temperature and comfort; light and dark feelings, dynamic feelings, light composition effects; Handling the timing and prediction of a good person with the lighting effect. At the same time, we must also deal with the physical and physiological effects of color, try our best to achieve the unification of lighting technology and art, and make people happy and healthy, and achieve the role of health care lighting.
Since the design content of healthy lighting is very rich, the current distance-to-height ratio and the utilization coefficient method cannot be used for lighting design. It is advisable to adopt an intelligent lighting design method with artificial neural network theory of self-learning function. Currently, the reverse propagation algorithm, BP algorithm, is usually used, which consists of an input layer, a hidden layer (middle layer) and an output layer neural network. During the operation, the error between the network output and the teacher signal (expected output) is propagated layer by layer, and the connection weight between the layers and the threshold of the hidden layer and the output layer are adjusted until the error is less than a predetermined value. until. Since the complexity of the time is replaced by the complexity of the time using the ordinary digital computer, the correct selection of the number of hidden layer neurons will affect the time efficiency. Unfortunately, so far, it is not possible to theoretically determine the number of suitable hidden layer neurons. In addition, it is necessary to solve the problem of local minimum and slow convergence of BP algorithm. Especially, health lighting is a complex system. The above problems are more prominent when many parameters are considered in the design of healthy lighting. In short, solving BP algorithms and other problems, and constantly improve the BP algorithm, making it a powerful tool for healthy lighting design.
Health lighting refers not only to artificial lighting, but also to natural lighting. Solar energy is a huge, safe source of clean light.
Under natural light conditions, people not only have higher visual effects than artificial light, but also make people feel comfortable and beneficial to their physical and mental health. At the same time, they can save energy, protect the environment, and contribute to the healthy development of human society. Reasonable natural lighting is an important part of healthy lighting. The current lighting standards mainly consider the role of sky diffusion light, but do not pay much attention to direct sunlight. To this end, it is necessary to use a novel daylighting system and high-tech materials to transport natural light through optical fibers to places where light is needed indoors. Electrochromic glass can also be used to adjust the amount of light entering the room at any time to make visible light and heat into the room. Meet the level of personal satisfaction and meet people's physiological and psychological needs.
3 Summary Health lighting is a kind of lighting that is conducive to the healthy development of human, environment and society. Human society needs to move forward healthily, and healthy lighting meets the needs of humanity. Therefore, lighting should not only consider protecting human health, but also consider health lighting, but also consider lighting to facilitate plant growth, and minimize the impact of light radiation on ancient buildings. These photobiological and photochemical problems are non-visual lighting. The main research content. In short, in a broad sense, the so-called health lighting is a reasonable integration of green lighting, comfortable lighting and non-visual lighting.
In order to achieve healthy lighting, in addition to studying the design methods of healthy lighting and the integration of technology and art as much as possible, we must also study the concept and principle of healthy lighting, and make full use of the new achievements of modern science and technology to continuously research high-quality new light sources. At the same time, we should develop new materials and systems for lighting and lighting, make full use of natural light, save energy, protect the environment, and make people healthy. In order to make healthy lighting design develop smoothly, health lighting design standards should also be formulated as soon as possible.
Din Rail Connectors,Din Terminal Block,Din Rail Mount Terminal Block,Rail Terminal Block
Cixi Xinke Electronic Technology Co., Ltd. , https://www.cxxinke.com