How to do the lighting design of large underground parking lot

By huanggs
Due to the particularity of the underground parking lot, such as large area, low floor height, dense equipment and pipelines, no or little natural lighting, etc., the lighting design should be considered in many aspects. A lighting system with design defects will affect driving safety. Misleading driving directions and wasting energy. The determination of the lighting control group is the key link in the lighting design of the underground parking lot, and its role is mainly reflected in three aspects; First, realize the transitional lighting of the entrance and exit of the parking lot by grouping, so that the driver's vision has an adaptive transition process when driving in or out; Second, design appropriate light groups and light strip shapes to form an orderly and changing lighting area, so that the driveway and parking space area of the garage echoes the light group and ground illumination changes, creating a clear light guide for driving and parking process; Third, determine the cross-interval grouping control mode of lighting, turn on partitions and group lighting at different times, and save electricity to the greatest extent on the premise of meeting the use. Due to the particularity of the underground parking lot, such as large area, low floor height, dense equipment and pipelines, no or little natural lighting, etc., the lighting design should be considered in many aspects. A lighting system with design defects will affect driving safety. Misleading driving directions and wasting energy. The determination of the lighting control group is the key link in the lighting design of the underground parking lot. Its role is mainly reflected in three aspects; There is an adaptive transition process; second, design appropriate light groups and light strip shapes to form an orderly and changing lighting area, so that the lanes and parking spaces of the garage echo the changes in light groups and ground illumination, providing a better environment for driving, driving, and lighting. Parking creates a clear lighting guidance process; third, determine the cross-interval grouping control mode of lighting, turn on partitions and group lighting at different times, and save electricity to the greatest extent on the premise of meeting the usage.
  1. Entrance and exit lighting design:
Due to the "adaptive lag" phenomenon of the human eye pupil, the driver's vision cannot adapt quickly when he quickly enters another environment with a large brightness value contrast from a certain environment in a moving vehicle: driving out of an underground parking lot at night or during the day When driving from the outside into the underground parking lot, the ambient brightness suddenly drops, causing the driver's instant blindness; on the contrary, when driving out of the underground parking lot during the day or entering the underground parking lot from the outside at night, the ambient brightness suddenly rises, and the driver has a strong sense of glare. . This visual barrier when entering and leaving the parking lot is likely to cause the driver to make mistakes when judging the oncoming traffic and judging the distance between the front and rear vehicles, causing accidents. In order to overcome this situation, transitional lighting should be provided at the entrance and exit.Also read:Best Garage Lighting Fixtures Garage entrance: In order to solve the "instantaneous blindness" phenomenon when driving in the daytime, the illumination of the entrance lighting group during the day from the outdoor to the inner ring road should be adjusted to transition from high illumination to low illumination, and the entrance driving after fully entering the garage The road illuminance should be kept higher than that of the internal ring road within a certain distance, so that the driver's vision "advanced" enters the adaptation period of the ambient brightness change and gradually adapts to the decrease in the illuminance inside the garage; on the contrary, in order to prevent the glare when driving at night, The entrance lighting group at night should be adjusted to transition from low illumination to high illumination (equal to or slightly lower than the illumination of the inner ring road), and the lamps at the entrance, especially the open-air barriers of the entrance driveway, should try to overcome glare. Garage exit: Since the indoor and outdoor ambient brightness changes in the same way as the garage entrance during the day or night, the treatment is the same as above. It can be seen from the above that the illuminance at the junction of the garage entrance and the outside should be appropriately higher than the interior of the garage during the day, and should be appropriately lower than the interior of the garage at night, but no matter day or night, the illuminance should have a "high to low" or "From low to high" transition process. Therefore, the implementation of transitional lighting is not achieved by the fixed mode of changing the installation density of lamps, but the transitional lighting should be realized by using different control modes of the lamp group during the day and night. Figure 2-3 is the lighting curve at the entrance of the short tunnel, which basically reflects the change of the transitional lighting at the entrance and exit of the parking lot. When the entrance and exit lanes are long, lighting group control is an effective measure to implement transitional lighting. For short-distance entrances and exits, the two factors of transition lighting mainly consider eliminating the phenomenon of "instantaneous blindness" when entering and exiting, that is, increasing the illumination at the entrance and exit. Measures such as continuous light strips (fogging hoods), and high light poles installed outdoors. More details:YeaPei