Research On Remote Monitoring System Of In-use Vehicle Emissions Testing

The remote technology based on Internet network is used, and the remote monitoring system of in-use vehicle emissions testing is researched in the thesis. The monitoring system has the function of online and offline data and image transmission, the system achieves monitoring the process and results of in-use vehicle emissions testing, and the system increases accuracy, reliability and regulatory of the remote emission testing. The following four contents are researched in the thesis.1. In-use vehicle emissions of ASM condition testing method is analyzed, the theory of in-use vehicle emissions of ASM condition testing system, essential factor and the affecting elements of testing accuracy are in-depth analysis, and the contents of remote monitoring system of in-use vehicle emissions testing are determined. The contents contain the test process data, operating specifications and the system calibration data.2. According to the contents and need of remote monitoring system of in-use vehicle emissions testing, the project of remote monitoring system of in-use vehicle emissions testing, network model and hardware structure are determined in the thesis. The monitoring plan is that the testing data is on-line monitoring as the principal thing, the normative operation is monitoring by image, and the system calibration data is monitoring through remote inquiry. The network model is B/S structure as the main thing and C/S structure as the assist. The overall structure of remote monitoring system of in-use vehicle emissions testing is designed.3. ASP.NET technology is used, connecting the database based on SQL2000 monitoring system database is achieved, the WEB interface is created to achieve remote transmission of the data, and the WEB interface for remote real-time network monitoring in-use vehicle emissions testing is achieved through programming. The functional module of emissions testing station management information monitoring , the emissions testing results monitoring and emissions testing process monitoring are developed in the thesis.4. VS2005 is used as development platform, C # language is used, the image information monitoring system is developed through C/S structure, the image monitoring program of emissions testing is designed, and real vehicle image gathering and transmission is achieved.