Abstract: The present invention relates to a visual efficacy measuring method for objects in different light environments, which comprises: (a) setting a light environment; (b) measuring a relationship between color temperature and time; (c) a driver visually recognizing a target object; (d) resetting the light environment, and repeating the step (c); (e) processing the visual recognition information data collected by the experiments so as to establish a relationship of the visual recognition time in relation with the light environmental parameters of color temperature, color rendering index and brightness; (f) performing visual efficacy analysis according to the processing results of the visual recognition information data.
Type:
Grant
Filed:
December 30, 2016
Date of Patent:
August 18, 2020
Assignees:
Beijing University of Technology (CN), Guizhou Expressway Group Co., Ltd (CN)
Abstract: The invention relates to an illumination standard calculation method for a tunnel entrance section in daytime based on safe visual recognition.
Type:
Grant
Filed:
October 15, 2015
Date of Patent:
October 22, 2019
Assignees:
Beijing University of Technology (CN), Guizhou Expressway Group Co., LTD (CN)
Abstract: The present invention relates to a visual efficacy determining method for non-colored objects in different light environments, comprising: a) setting light environment; b) placing an object for performing visual recognition of a driver; c) resetting the light environment, and repeating the step b); d) processing visual recognition information data obtained after experiments, and establishing a correlating relationship between visual recognition time and color temperature, color rendering index and brightness parameters of the light environment; and e) performing visual efficiency analysis according to the visual recognition information data processing results. The present invention further provides a system for implementing the visual efficacy determining method for non-colored objects in different light environments, wherein the system comprises a simulated tunnel middle section subsystem, a testing subsystem and a data processing subsystem.
Type:
Grant
Filed:
October 15, 2015
Date of Patent:
July 16, 2019
Assignees:
BEIJING UNIVERSITY OF TECHNOLOGY (CN), GUIZHOU EXPRESSWAY GROUP CO., LTD (CN)