| 英文摘要 |
The impact of light pollution on people is become increasingly serious, petition cases also increased, based on the characteristics of conditions of our country, we study the flickering light pollution phenomenon, which include the test methods and impact factors study, and proposed a proposal of light pollution control strategy.
In this project, we study 11 international laws and regulations and the scientific literatures, and 13 local laws and regulations, the light pollution appealing cases of 15 cities. We find out, the dominant appealing light sources are LED screens, and the dominant impact factors are dazzle, too bright and flicker, for the light pollution phenomenon. In summary, we will focus on the test methods study of glare and flicker of flickering light pollution. We also complete two expert advisory meetings, one light pollution relevant authorities of government and civil society discussion meeting, two test draft of glare and flicker of LED screen, and complete 128 physical test results of glare and flicker impact of LED screen. Based on the above study, we got a proposal of light pollution control strategy.
In our study, we recommend to use image-type luminance measurement device to evaluate the glare induced by flickering light source, and use high speed illuminance-type light detector to record waveform and evaluate the flicker induced by flickering light source. Combine with the human factor experimental results and measuring results of glare and flicker of LED screen, we get comfort rating experienced model and flicker rating experienced model with a score value from one to nine. Both of these models are including glare effect and flicker effect with related weighting factors. Hence, we suggest using one of these models to evaluate the impact of flickering light pollution.
In light pollution control recommendations, which can be divided into three categories, they are behavior control, source control, and standards and regulations control. Behavior control can be divided into sub regional control, time-zone control and special circumstances permit. On source control, starting from the set censorship before the light source is disposed; for example, set the LED screens functional specifications requirements to confirm its specifications can meet the sub regional and time-zone control values, authorities may also irregular spot checks to confirm the screens control values set in line with the application. In standards and regulations, use the current standards and regulations to control the light pollution, and revised standards and regulations or build new standards and regulations in long term.
In current status, the major flickering light pollution sources are LED screens with motion picture content or LED combo lamps with complex patterns, hence we suggest studying flickering light pollution induced by the complex pattern of LED combo lamp or color images and color motion pictures of LED screen in the near future.
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