Performance Analysis And Selection Of Outfield Equipment For Traffic Monitoring System In Plateau Area

Monitoring system provides information for decision-makers through real-time collection and monitoring of traffic conditions,which is an important guarantee for efficient operation of expressway.The special environmental conditions and monitoring requirements of plateau area put forward higher requirements for the monitoring system equipment.The main research contents and conclusions are as follows :(1)Starting from the design objectives and functions of expressway monitoring system,this paper introduces four subsystems.According to the functional differences,the outfield equipment is divided into four categories,and then the core functions of all kinds of equipment are discussed in detail.The influencing factors of voltage stability and detection accuracy of monitoring equipment in plateau environment are analyzed,which lays a good foundation for the construction of follow-up evaluation system;(2)In order to evaluate and compare the performance of the monitoring system,the evaluation system of the monitoring system is constructed from the technical functionality and operation management index.Considering the particularity of plateau area,the evaluation criteria of common indicators are adjusted accordingly.In addition,the pretreatment method of index is introduced to facilitate unified comparison;(3)Analytic hierarchy process(AHP)is a multi criteria decision-making method which combines quantitative analysis with qualitative analysis.The fuzzy comprehensive evaluation method can solve the problem of multiple indicators at the same level.This article combines the two methods to make use of the advantages of the two to make up for their respective deficiencies.Integrating multiple dimensions of indicators in the evaluation system to obtain more accurate,stable,and objective evaluation results;(4)Finally,the effectiveness of the three construction schemes for the section g4218 to balongnan is verified.The selection scheme with the best technical performance and the lowest operation and management cost is selected.