Design And Implementation Of Bridge Health Monitoring Data Visualization Systems

With the rapid development of economy, transportation infrastructure is rapidly increasing, while the bridges have palyed an irreplaceable important role in the transport operation, their health status can not be ignored. However, in our country, a lot of bridge current detection method is still by manual inspection. Manual inspection is not only need a long period, but also doesn’t examine fully and have quantitative data on the disease, therefore, it generates bridge health monitoring system based on the sensor.In this paper, we study the current status of bridge health monitoring and 3D modeling deeply, research some key technologies in bridge monitoring, via combined with the actual needs of bridge maintenance person, design and develop the bridge health monitoring system based on the WEB, a bridge three-dimensional presentation of the structure and efficiency of monitoring data, visual presentation and early warning has came true, the work above has helped that analysis of the bridge custody unit and maintenance of the bridge. Specific work as follows:(1) We analyzed the significance and status of bridge health monitoring, and studied the indicators which affect the bridge structure status, summed up the type of sensors needed to be arrange in the bridge health monitoring, proposed to demonstrate its sensor arrangement of the bridge 3D model structure vision. We studied on the data collection process, analyzed the mapping between data and sensor arranged sections and proposed solution, filtered the noise data and created a corresponding new data table to strorage.(2) We studied the production process of bridge 3D model files, analyzed the generic 3D model file format, and achieved the process of parsing, thereby produced the more efficient model format files which is needed by system. We studied the WebGL technology deeply, and analyzed the process and rendering the framework of its three-dimensional image display, described the process of drawing a bridge model. Meanwhile, in order to achieve a more realistic display of results, we also use a texture map to load the HD map near the bridge to the bridge model space.(3) We analysised the arrangement sectional positional relationship between the sensors in bridge structure and drawed its measuring point layout by SVG image format, by way of marking the bridge model to be displayed, by selecting the measuring point layout of sensor tags, go to the data display section, achieved interaction functional between bridge model and monitoring data.(4) We analysised the actual need of bridge health monitoring system, designed a two-dimensional charts and tables to show the monitoring data, and designed algorithm to achive these functions. We analyzed and summarized the work have done in this paper, to the system deficiencies and shortcomings, pointed out the direction for future research, it will has greater value after further optimize and improve.