Analysis on the Construction Method of Lighting System in Workshop Work Area
First, establish a good viewing condition In order to create a comfortable lighting environment, to provide viewers with better viewing conditions, it is extremely important to determine the illuminance correctly.
Studies have shown that adapting the comfort lighting to the illumination is about the same. In view of the current low economic level and insufficient power supply capacity in China, the illuminance standard is not yet set too high. In line with a series of factors such as application, economy, safety, health and profitability to ensure labor productivity, the relevant state departments have promulgated the "Industrial Enterprise Lighting Standards".
Second, choose a reasonable light source according to the different performance, characteristics and different lighting needs of the light source, reasonable choice of light source should pay attention to the following points
In the requirements of high color rendering; frequent opening and closing corridors; rapid ignition does not need to start accident lighting; need dimming stage; art or decorative lighting lanterns and electrical shielding rooms and other places should use incandescent lamps. Due to the shortcomings of low luminous efficiency, short life, high energy consumption and high maintenance costs, incandescent lamps have rarely used incandescent lamps as illumination sources. It is required to have high illumination, good color rendering and places where dimming is required. For example, tungsten halogen lamps should be used in the halls and banquet halls. High illumination and color rendering requirements, suspension height, fluorescent light should be used in the following occasions when opening and closing infrequently. For example, textile, printing, design room, classroom, store, office, chemical analysis, etc.
Fluorescent high-pressure mercury lamps can be used in factories with high illuminance requirements, high-hanging lamps, urban areas and factory roads. When a light source can not achieve a good lighting effect, a method of mixing a fluorescent high-pressure mercury lamp with an incandescent lamp can be used to improve the total luminous efficiency and ensure a good light color, as long as the incandescent lamp capacity is not less than fluorescent high-pressure mercury. With the capacity of the lights, people will not have obvious discomfort in the visual sense.
Third, the selection and arrangement of the luminaires The selection and arrangement of the luminaires is to achieve the highest luminaire efficiency, provide the best protection angle and get the best light distribution as the standard. The selection of luminaires is mainly based on their structure and optical characteristics.
The lampshade must be completely matched with the type and power of the light source; the lamp should be selected according to the requirements of light distribution to achieve the purpose of rational use of light and energy saving; when the suspension height is certain, suitable lamps can be selected according to the requirements of limiting glare; When selecting, it should be able to adapt to the requirements of normal, humid, dusty, waterproof, fireproof, explosion-proof, vibration and other environmental characteristics; in accordance with economic principles, the selection of lamps should mainly consider factors such as investment and annual operating costs; It should also be fully adapted to the requirements of the built environment and installation conditions.
The arrangement of the luminaires requires the minimum illumination conditions in addition to the minimum illumination conditions. It should also make the illumination on the work surface uniform, the light is directed appropriately, the glare effect is small, the shadow is less, the maintenance is convenient, the work is safe, the arrangement is neat and beautiful, and The building space is fully coordinated. The arrangement of the lamps can be divided into two ways: uniform arrangement and selection arrangement. One is a uniform arrangement. The distance between the lamps and the distance between the rows are kept in a uniform arrangement, which is suitable for occasions where uniform illumination is required for the entire working surface. General lighting in general lighting should generally be evenly arranged, uniform illumination not only meets the requirements of vision work, but generally also meets economic principles. The second is to choose the arrangement. The arrangement of the luminaires is related to the position of the work surface, and is mostly symmetrical to the work surface to achieve the most favorable light path direction on the work surface and to minimize shadows on the work surface. The choice of arrangement is suitable for rooms where the distribution of the equipment is very uneven, the equipment is tall and complex, and the room where the required illumination distribution cannot be obtained with uniform arrangement.
Fourth, the lighting method and the type of lighting to determine the location of the work density, lighting direction and no special requirements) assembly room, office, etc., should use general lighting. For places where high illumination is required for local locations and special requirements are required for the illumination direction, local illumination is used, and mixed illumination is required for places where the work position requires high illumination and special requirements for the illumination direction. The illumination used to ensure that the illuminated place is in normal working condition with the need for illumination is the work illumination; when the work illumination is extinguished due to an electrical accident, the illumination set to continue working or evacuating the person from the room is accident lighting.
5. Using the coefficient method to calculate the illuminance The utilization factor is the total luminous flux ratio of the light passage on the surface of the prison and the light source in the room. It considers the direct component of the light flux and the total illumination produced by the reflected mouse on the horizontal plane. The indoor general illumination of the illuminator is evenly arranged.
The average illuminance / 0 1 and the minimum illuminance are based on the definition of utilization factor and illuminance, and considering the factors that the luminous flux is attenuated by the light source and the environment during the use of the luminaire, the actual average illuminance on the working surface can be directly written. The total luminous flux of the bulb, of which 3 is the number of bulbs installed, and the luminous flux of each bulb is small. The above formula can be used to determine the number of bulbs known to have an average illumination of 3 .
In order to determine the minimum illuminance value specified by the lighting regulations, it is also necessary to derive the utilization factor of the illuminance illuminating luminaire and the type, luminosity and light curve of the luminaire related to the following factors. The light sighting efficiency is high, and the light transmission is more concentrated. The higher the utilization coefficient, the higher the suspension of the lamp, the more the reflected light is transmitted, the higher the utilization coefficient; the larger the area and the area, the closer to the square, the more direct light flux The higher the utilization factor.
Six Conclusions Reasonably designing the factory lighting system not only provides reasonable viewing conditions for workers, but also ensures the health of workers, provides a good environment for workers' comfortable work, and can improve workers' work efficiency and ensure the good operation of enterprises.
Therefore, it is necessary to properly design the power distribution scheme of the factory lighting system.
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