Application Of LED In Underground Garage Lighting Project
LED in indoor lighting projects have come at a fast pace, indoor lighting involves a wide range of lighting products, the application of a wide variety of LED products suitable for application in what occasion, what type of products should be developed, should cause designers and business manufacturers pay great attention. In recent years, some enterprises on the LED light source, lighting manufacturing and lighting engineering is not fully understood, blindly on the project, product positioning is not accurate, resulting in some undue losses, and even closed down. Indoor lighting is basically functional lighting, complex building construction, product technical performance requirements, product cost performance requirements, the current stage of LED lighting can not be separated from the controllability, the use of intelligent control of lighting products to have a high cost performance, to have vitality, truly reflect the advantages and characteristics of LED light source.
At present, many LED light manufacturers to develop and produce alternative T5, T8 straight fluorescent lamps and integrated bulb products, only a temporary alternative products, cost-effective is not high, not the current direction of development of LED products. LED lighting products should have their own characteristics, the appearance of the shape to be innovative, functional innovation, control to be innovative, the structure of the lamp to be innovative, only innovation to have development, never what products do, what products do not have features, to break through the LED light source. What products do not have characteristics, to break through the traditional light source lamps and lanterns model, to do the products created in China, take the road of innovation and development.
In indoor lighting, LED lamps and lanterns used in what place, what LED lighting types should be used, what type of control method is used, is the basis for the design of indoor lighting projects. To develop suitable lighting products for indoor applications according to the characteristics and advantages of LED, in order to have innovation, in order to meet the requirements of the lighting function, in order to truly achieve lighting energy saving.
Lighting energy saving mainly consists of five aspects: first, energy-saving design; second, the use of high-efficiency light source; third, the use of high-efficiency lamps; fourth, the use of effective lighting control system; fifth, perfect operation management; five aspects are indispensable. LED light source as the fastest developing light source, is the emerging solid-state light source after incandescent, gas discharge lamps. Due to its small size, high efficacy, colorful, easy to shape lamps, no strobe, fast start, easy to control and many other advantages, in the current lighting project is widely used, especially in recent years the outdoor night landscape lighting, played an irreplaceable role of other light sources. As LED light source has the advantage of strong controllability, more suitable for application in underground garage lighting.
First, the status of the garage light lighting
The development of modern cities has created tens of thousands of underground garages, the current underground garage lighting mainly exists in the following problems:
1) Garage lighting standards. Underground garage lighting engineering design is mainly based on the "Architectural Lighting Design Standards" GB 50034-2004, the standard stipulates that the ground illumination for 75lx. according to the actual use of the situation, 75lx illumination standard is a little high, because the underground garage personnel activities need to be local lighting, the overall lighting requirements are not high, it is recommended that the illumination standard is revised to 50 lx is more appropriate, can meet the requirements of the garage lighting.
2) Lamp application status. The current lighting source of the garage is basically the use of T8 or T5 straight fluorescent lamps, lamps and lanterns are roughly divided into two categories of box-type lamps and lanterns and dust-proof type. Installation using lighting busbar way, ceiling way and hanging chain way. Control mode is basically centralized manual control, controlled by the duty officer in the duty operation room. As the underground garage needs 24-hour lighting, garage lighting in the state of long light, the loss rate of the lamp is very high, the need to often replace the lamp, maintenance workload, high maintenance costs. In some garages, only half of the lamps are installed in order to save electricity, and in some garages with poor management, the lamps are not replaced and are almost in darkness.
3) The use of garage in different types of buildings. Commercial, office buildings and medical buildings underground garage vehicle flow frequency is high, the average of about 2 hours flow to change once, but almost no vehicle flow during non-business hours, lighting fixtures are still in a constant state; traffic buildings such as airports, train stations and other garages during midnight also rarely have vehicle flow; office, office buildings and residential communities, such as vehicle flow frequency is low, morning and evening commuting is the peak period, the rest of The rest of the time there are few vehicles and personnel flow, the lighting is still in a long state, lighting electricity waste is very serious.
Second, the design of garage lights and energy saving
1） Reasonable arrangement of light position
New garage design. Light source should be used LED light source, lighting should be used about 12 ~ 16W LED light source plus infrared or radar control mode, color temperature 4500K or so. The main lane of traffic in the garage, should be evenly arranged lamps, lamps spacing of about 7 meters (according to the ground material reflectivity to determine), due to the low height of the underground garage, the light source of lamps should not be selected too large, light distribution angle should not be too small, try to improve the uniformity of lighting.
Each parking space above the arrangement of a lamp, convenient for parking use. At the entrance and exit of the vehicle, the spacing between the lamps and lanterns can be smaller, and the illumination level should be increased, so that there is a visual adaptation process of light and dark. The light fixture at the open air of the vehicle entrance and exit adopts the wall embedded installation method, the protection level of the light fixture should reach IP55 or above to prevent rainwater infiltration, the installation height is generally about 30cm from the ground, the light is projected on the ground and cannot produce glare, which affects driving.
Already have a garage renovation. Existing garage lighting energy-saving transformation, the use of LED intelligent control lamps and lanterns, light source 12 ~ 16W or so, before replacing the lamps and lanterns must be through the actual site survey, to find out the original way of laying the line and the installation of lamps and lanterns, choose the appropriate replacement lamps and lanterns, transformation projects to choose a single light single control mode is relatively simple, distribution lines generally do not need to be transformed.
Outdoor parking building, due to the daytime without lights, LED intelligent garage lights to increase the illumination automatic control function, when the library illumination is lower than the specified value, the lighting can be turned on.
2) Light source
Garage lighting light source should be used LED light source, it is the most ideal application of LED light source, one is easy to control, two is energy saving, three is to give full play to the application of LED light source strengths, four is to improve the cost performance of LED lighting applications, compared with T5, T8 straight fluorescent lamps, the investment recovery cycle is generally about a year.
As we all know, light-emitting diodes ( LED) white light theoretical luminous efficiency of up to 300lm / W above, the theoretical life of up to 100,000 hours or more, due to manufacturing and application and other unreasonable, its service life is far from the ideal value, its industry is far from maturity, whether in the chip packaging or in the manufacture of lamps, there is a lot of innovation and development space, and in recent years under the support and promotion of the government, the development of The speed is very fast, the price of light sources to reduce faster, to create very good conditions for LED applications.
Garage lighting is currently using intelligent LED lights instead of T5, T8 fluorescent tubes is more appropriate. Because the LED light source has strong controllability, power variability, the use of intelligent control, cost-effective, light efficiency has been slightly higher than the straight fluorescent lamps, not only significant power savings, and long service life, maintenance costs effectively reduced, although the initial installation costs are high, but, about a year to recover.
3）Lighting fixtures
Because LED is a solid-state light source, with small size, fast response, can be modular combination, power size can be adjusted at will, DC power supply drive characteristics, for the lighting manufacturing brings great convenience. Can be made according to the need for various functions of lighting-type lamps and lanterns, but also according to the needs of artistic lighting into artwork lamps and lanterns, so that the manufacture of lamps and lanterns at will.
Underground garage high lumen smart bulb is based on the characteristics of the garage, manufacturing its lamps and lanterns to adapt. Underground garage LED lights must be combined with the control in order to play the special features of the LED light source, the power control module and LED light source module should be connected by way of plug-in, easy to maintain and replace. The shape of the lamp should be innovative, not the same as the traditional light source lamps and lanterns, LED lamps and lanterns should have artistic shape, due to its long-term low brightness state, generally do not need heat dissipation treatment, to reduce the consumption of materials, material saving is also part of energy saving.
Currently applied in the garage lighting sensor is basically divided into two types, one is the infrared sensor, the price is lower, the disadvantage is that there is a certain detection blind area due to the height and radiation angle restrictions. The other is radar sensor, can overcome the disadvantage of detection angle blind area, the price is slightly higher, the two sensors are combined with LED lighting together, can effectively realize the underground garage lighting energy saving. When there is a car around the light activity, LED lighting is running at full power to meet the needs of lighting, when no one car, the light is in a dormant state, maintaining a low power of about 3W lighting, maintaining the minimum illumination required for safety lighting to achieve lighting power savings, its power saving rate of up to 80% or more.
In summary, LED in the garage lighting has its wide range of applications and development space, has its huge commercial potential, with the advancement of LED technology, cost-effective, practical application experience, LED lighting applications will quickly step into the commercialization, serialization, scale, standardization of the track.
LED lighting applications and lighting power saving work is a comprehensive issue that requires the support and attention of many parties, carefully summarize the positive and negative experience, the correct application of LED lighting, this new industry to encourage, support, foster and promote, which is to promote the healthy development of China's LED lighting cause, to ease the country's current tight power supply, save money to achieve a low-carbon economy, energy saving. Energy saving and emission reduction, have their practical significance.
