Sight distance visibility meter and measuring method thereof

Abstract

A sight distance visibility meter and a measuring method thereof can simulate light sensitivity of human normal vision truly to obtain atmospheric visibility distance directly and truly, and relate to the fields of real-time monitoring of agglomerate fogs in highways and atmospheric visibility distance measurement. The sight distance visibility meter comprises a target body, and an optical amplifier, a near infrared plane array CCD (charge coupled device) and an embedded signal processing unit which are connected sequentially, as well as a fog energy actuator arranged between the target body and the optical amplifier. Compared with the digital camera visibility distance measurement method, the method provided by the invention has the advantages of all-weather, high measurement accuracy, good stability, simple structure, small volume, low cost and the like due to the fact that the method does not needed a scene reference, is free from the affects of environmental factors like light and temperature in the atmospheric environment and acts no matter day and night, and the method is applicable for the real-time measurement of distance visibility and highway agglomerate fog monitoring needing intensive stationing.

Description

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AI Technical Summary

Benefits of technology

This technology solves problems such as lack of precision due to weathers or changes caused by external factors like rainwater during winter months. Its technical effect includes improved detection capabilities at both indoor and outdoor environments while maintaining stable measurements even under extreme temperatures conditions. Additionally, this technology allows for more accurate and reliable vision testing without requiring specific environmental settings.

Problems solved by technology

This patented describes various methods and devices currently available for detecting invisible hazards like snowfall during winter storms. These techniques include optically active technology, radar systems, laser interferometry, and cameras. Optically Active Technology refers to improving visibility through direct measurements without relying upon external references. Different types can also involve multiple sensors, including infrared imagers, X ray fluorescence monitors, and scintilloscope. Digital Photographic Imaging Technologies (IPMI), Radiology Information Analysis Method Interval Time Indexes (RIMIsI) and Intensity Distribution Functionality (IDF)) provide advanced technologically useful tools for studying complex environments where vehicles travel around. They allow us to measure both nearness and long range visibility simultaneously over short distances while avoiding issues associated with ambient conditions.

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