Tunnel middle section illumination standard measuring and calculating method and system based on safe visual cognition

Abstract

The invention relates to a tunnel middle section illumination standard measuring and calculating method based on safe visual cognition. The tunnel middle section illumination standard measuring and calculating method comprises the steps of (a) setting a light environment of a tunnel middle section; (b) arranging an object at the tunnel middle section; (c) enabling a driver to drive a motor vehicle to run towards the objected at different speeds and measuring visual cognition distances D of the objected, found by the driver, at the different speeds; (d) resetting average brightness L of the tunnel middle section and repeating the steps (b) and (c) and obtaining multiple groups of visual cognition distances D corresponding to different brightness L; (e) utilizing an S model to conduct fitting on the multiple groups of visual cognition distances D and brightness L data to calculate a D and L relation model formula (shown in the description); (f) substituting a safe visual distance D0 at highest limit speed of a tunnel parting into a model formula to obtain a dynamic minimum brightness value L0 required by the tunnel middle section in the tunnel light environment. The invention further provides a system for achieving the method. By means of the method and system, the accuracy of brightness safety evaluation of the tunnel middle section is improved, meanwhile the method is simple and convenient to operate, and a reference basis is provided for road traffic safety research.

Description

technical field [0001] The invention relates to the technical field of highway tunnel lighting, in particular to a method and system for measuring and calculating lighting standards in the middle section of a tunnel based on safety visual recognition. Background technique [0002] The middle section of the road tunnel is a relatively closed structure and is not affected by natural light. When the driver is driving in the middle section of the tunnel, the driver's visual and psychological burden will increase compared with the external environment. In order to improve the visual environment of the tunnel, lighting facilities should be used in the tunnel, and the brightness value of the middle section of the tunnel that can meet the needs of visual information collection and driving safety and comfort when the driver drives the vehicle at a certain running speed in the middle section of the tunnel, that is, the brightness value in the middle section of the tunnel. segment safe...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to solve the above-mentioned technical defects existing in the prior art, to provide a method for measuring and calculating the illumination standard of the middle section of the tunnel that is reliable in basis, easy to operate and meets the driver's visual recognition requirements, and also provides a simple, reliable, A system with a high utilization rate to realize the lighting standard calculation method of different light source characteristics in the middle section of the tunnel based on visual recognition safety, so as to overcome the unreliable basis of the existing lighting standard in the middle section of the tunnel, the complexity of the test, and the results that do not consider the physiological and psychological factors of the driver. technical flaw

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