Shanghai - towering building is her soft body, the endless stream of her bodybuilding muscles, colorful lighting is her gorgeous coat. Being in this city, we can not only appreciate her prosperity and change, but also attract the strong atmosphere of the city. Because here, countless elites and talented people have dedicated their youth and wisdom to the development of this city. Shanghai Municipal Engineering Design and Research Institute (Group) Co., Ltd. is also one of the devotees among them. People in the city have traffic (railway, roads, bridges) and daily life (electric meters, hydraulics, HVAC power). , leisure and entertainment (landscapes, architecture) and so on are all indispensable for their presence. Today, we went to the Shanghai Municipal Engineering Design and Research Institute (Group) Co., Ltd. to visit the two chief engineers Zhang Chaochao and Lu Jicheng.
Engineering Lighting - More Focus on Functionality
Currently Shanghai Municipal Engineering Design Institute (Group) Co., Ltd. involves a wide range of projects, such as plant construction, roads, bridges, elevated, transportation hubs, tunnels, underground space and other municipal projects, each project requires varying degrees of Lighting input. There are many similarities between the two. For example, the projects are all large-scale, highly specialized, and have high requirements for performance, safety, and reliability; there are also many different places, that is, specific requirements and regulations vary by project. Different owners vary. Therefore, there is also a difference between landscape lighting and civil building lighting. In general, the lighting of municipal engineering is most important in terms of functionality.
The choice of engineering lighting products - belong to the "conservatives"
In the specific application of large-scale roads and bridges, the selection of lighting products tends to be “conservativeâ€: that is, they prefer to choose traditional lamps instead of LED lamps. For example, the selection of street lamps is still dominated by high-pressure sodium lamps, and the selection of brands is also more inclined towards famous brands at home and abroad. Compared with the general roads, the lighting of tunnels has higher requirements for visual effects. Most of the lamps in Shanghai are based on fluorescent lamps. In comparison, the application of LED lights in tunnels has relatively mature technology and economic conditions. This is the case, Shanghai Municipal Engineering Design Institute (Group) Co., Ltd. is still very cautious about the choice of LED lamps, at present, only a new project in Hongqiao selected LED lamps as a demonstration project. Talking about the reasons for not recommending large-scale LED lamps in municipal roads and bridges, Zhang summarized the following reasons for us: â—‹1 The standard specification lags behind, and the standards for engineering applications such as street lamps remain in 2006. This is obviously related to current technology. The development does not match, in the case of the technical standard of LED street light selection is still not clear, the traditional lamps and lanterns still occupy the dominant advantage; â—‹2 The development of LED lighting is still in its infancy, investment is also risky. Especially in engineering applications, there are uncertainties in safety performance, service life, maintenance, and so on. Even a light problem in traffic lighting will bring a lot of trouble; â—‹ 3 high-power LED lighting products relative to the quality of low-power products can not guarantee.
Recommendations for domestic lighting manufacturers - focus on project integrity
At present, foreign brands mainly push indoor LED lighting products, and promotion of high-power outdoor products is not much. According to the land-based analysis, foreign brands are still in the stage of promoting “idea†and have not yet entered a large-scale product promotion stage. Compared with foreign products, domestic products not only emphasize energy saving, but also pay less attention to the technical performance of the lamps. But the most important point of lighting is: Lighting is not a single individual. As a part of engineering, decoration or other, lighting is for his function, and different functions correspond to different performance requirements. As road lighting, there are special requirements, from the function, emphasis on brightness, uniformity and anti-glare; from the economic, in addition to the cost of the product itself, but also hope to be high power to reduce the number of lamps, light poles; from maintenance , I hope high reliability, maintenance-free or less maintenance. LED as a light source is only a part of the lamp, but combined into a lamp, but also hopes for a series of light effects, light decay, life, light distribution curve, light cut, self-cleaning, heat dissipation, matching electrical life of the light source. Further research. In addition, for the advantages of LED such as: easy to adjust the light, color rendering, etc., in the road lighting can play a role and how to play a role, all need to conduct in-depth study. Lu Gong also specifically introduced us to a story: Philips has a high-pressure sodium lamp that emits white light, and its color rendering performance is much better than ordinary yellow-light high-pressure sodium lamps, and its price is relatively high. The street light is used in some sections of the Xuhui District. The result was surprising to many people. After interviewing a number of driver's friends, the driver found that the driver did not feel "a clearer field of vision" because of the use of a good-looking street light. Some even thought that Huang Guang was more comfortable. Zhang Zong explained to us: This is mainly because the driver is mainly to identify whether there are obstacles in front of the driver, but the specific color, appearance and other details of the obstacles to identify the requirements are not high, and in the process of driving the vehicle, This time of a few seconds cannot and does not need to observe more details. Therefore, street lamps with good color rendering may not be effective.
Engineering Lighting - More Focus on Functionality
Currently Shanghai Municipal Engineering Design Institute (Group) Co., Ltd. involves a wide range of projects, such as plant construction, roads, bridges, elevated, transportation hubs, tunnels, underground space and other municipal projects, each project requires varying degrees of Lighting input. There are many similarities between the two. For example, the projects are all large-scale, highly specialized, and have high requirements for performance, safety, and reliability; there are also many different places, that is, specific requirements and regulations vary by project. Different owners vary. Therefore, there is also a difference between landscape lighting and civil building lighting. In general, the lighting of municipal engineering is most important in terms of functionality.
The choice of engineering lighting products - belong to the "conservatives"
In the specific application of large-scale roads and bridges, the selection of lighting products tends to be “conservativeâ€: that is, they prefer to choose traditional lamps instead of LED lamps. For example, the selection of street lamps is still dominated by high-pressure sodium lamps, and the selection of brands is also more inclined towards famous brands at home and abroad. Compared with the general roads, the lighting of tunnels has higher requirements for visual effects. Most of the lamps in Shanghai are based on fluorescent lamps. In comparison, the application of LED lights in tunnels has relatively mature technology and economic conditions. This is the case, Shanghai Municipal Engineering Design Institute (Group) Co., Ltd. is still very cautious about the choice of LED lamps, at present, only a new project in Hongqiao selected LED lamps as a demonstration project. Talking about the reasons for not recommending large-scale LED lamps in municipal roads and bridges, Zhang summarized the following reasons for us: â—‹1 The standard specification lags behind, and the standards for engineering applications such as street lamps remain in 2006. This is obviously related to current technology. The development does not match, in the case of the technical standard of LED street light selection is still not clear, the traditional lamps and lanterns still occupy the dominant advantage; â—‹2 The development of LED lighting is still in its infancy, investment is also risky. Especially in engineering applications, there are uncertainties in safety performance, service life, maintenance, and so on. Even a light problem in traffic lighting will bring a lot of trouble; â—‹ 3 high-power LED lighting products relative to the quality of low-power products can not guarantee.
Recommendations for domestic lighting manufacturers - focus on project integrity
At present, foreign brands mainly push indoor LED lighting products, and promotion of high-power outdoor products is not much. According to the land-based analysis, foreign brands are still in the stage of promoting “idea†and have not yet entered a large-scale product promotion stage. Compared with foreign products, domestic products not only emphasize energy saving, but also pay less attention to the technical performance of the lamps. But the most important point of lighting is: Lighting is not a single individual. As a part of engineering, decoration or other, lighting is for his function, and different functions correspond to different performance requirements. As road lighting, there are special requirements, from the function, emphasis on brightness, uniformity and anti-glare; from the economic, in addition to the cost of the product itself, but also hope to be high power to reduce the number of lamps, light poles; from maintenance , I hope high reliability, maintenance-free or less maintenance. LED as a light source is only a part of the lamp, but combined into a lamp, but also hopes for a series of light effects, light decay, life, light distribution curve, light cut, self-cleaning, heat dissipation, matching electrical life of the light source. Further research. In addition, for the advantages of LED such as: easy to adjust the light, color rendering, etc., in the road lighting can play a role and how to play a role, all need to conduct in-depth study. Lu Gong also specifically introduced us to a story: Philips has a high-pressure sodium lamp that emits white light, and its color rendering performance is much better than ordinary yellow-light high-pressure sodium lamps, and its price is relatively high. The street light is used in some sections of the Xuhui District. The result was surprising to many people. After interviewing a number of driver's friends, the driver found that the driver did not feel "a clearer field of vision" because of the use of a good-looking street light. Some even thought that Huang Guang was more comfortable. Zhang Zong explained to us: This is mainly because the driver is mainly to identify whether there are obstacles in front of the driver, but the specific color, appearance and other details of the obstacles to identify the requirements are not high, and in the process of driving the vehicle, This time of a few seconds cannot and does not need to observe more details. Therefore, street lamps with good color rendering may not be effective.
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