GIS-Based Design Of Railway Safety Monitoring System

This subject belongs to railway safety monitoring domain, in order to improve the safety of railway transportation security ability, to establish a unified plan, centralized setting, information sharing and operation and maintenance simple comprehensive safety monitoring system.This topic to the central processing system construction as the research foundation and company safety monitoring management center, will be collected from the safety monitoring information and data centralized management and comprehensive utilization, realize information sharing, to provide services, and in the next section between monitoring information, expanding the coverage of network, further improve for safety monitoring.By combining GIS system software platform construction, the geographical system of geographical location information change effective statistical analysis, when the monitored system component, location information, detection results detected abnormalities or accident, timely alarm processing.For monitoring the focus of the" the Yellow River bridge health evaluation", respectively, through the use of a large measuring range, reference station and monitoring point distance is almost unlimited, delayed by short, strong reatime differential GPS monitoring means to measure bridge lateral vibration amplitude, and the use of high resolution and high measurement precision of fiber Bragg grating sensor evaluation of bridge strain status, then comprehensive evaluation of bridge health index.Safety monitoring center construction and safety monitoring center software development, so that the system has good compatibility and expansibility.Improve the business processing, warning, information database and decision support function. On the system of data gateway, to new system developing data standardization, unified program interface.Combined with the actual situation of the railway, using the background analysis, correlation analysis and image processing technology, research the tunnel intelligent video surveillance equipment, to achieve rockfall, illegal entry, animal intelligence alarm.Preparation of video communication software, to achieve the existing power supply monitoring system of digital video access.The differential GPS measurement technology, realize the bridge body three-dimensional vibration, displacement data of the all-weather real-time monitoring, the ionosphere and bridge the influence of environmental characteristics, using three difference Calman filter technology, to achieve high monitoring precision.Using the most advanced ARCGIS platform, realize the three layer structure of the three-dimensional geographic information system.The central processing system software realized Shen Shuo railway existing system data access, previously scattered data, is not convenient for unified management of the problem, realized the Yellow River bridge fiber Bragg grating monitoring and differential GPS monitoring, the Shen Shuo railway the Yellow River railway bridge safety monitoring have a more intuitive, the authority of the monitoring information; by finite element method method to analysis and calculation of the static (including train live load on the deformation analysis), power (including the bridge of the longitudinal and transverse strain value) characteristics, and gives the bridge health condition evaluation standard. Achieve a two-dimensional and three-dimensional geographic information system; implementation of the access system of monitoring data the custom setting alarm parameters, alarm range and send the range; the alarm and the accident statistical analysis management function.This research can be a full range of integrated monitoring of railway traffic safety, timely monitoring and discover the problems in the transportation of the railway key passages, the transportation safety coefficient increased significantly, effectively reducing the use of traditional detection system of the evils, is to improve the efficiency of transport guarantee.