Compatible railroad bridge condition monitoring system based on Beidou satellite
A condition monitoring system, compatible technology, applied in the direction of radio wave measurement system, signal transmission system, satellite radio beacon positioning system, etc.
Inactive Publication Date: 2013-05-08
西北铁道电子股份有限公司
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Problems solved by technology
At present, there are not many related equipment and products for real-time monitoring of railway bridge displacement in China. Bridge displacement monitoring applied to traffic safety is mostly based on bridge stress and strain monitoring, monitoring of winding, temperature, support displacement, pier inclination, etc., but due to common The application requirements and background of bridges and railway bridges are quite different, and the monitoring data cannot meet the needs of railway bridge safety monitoring, so the technology and products based on deformation monitoring of ordinary bridges are not suitable for the safety monitoring of railway bridges
[0007]There are many examples of bridge deformation monitoring at present, and there are many limitations and inconveniences in the deformation monitoring of large bridges by conventional methods
For example, the total station has the disadvantages of out-of-synchronization of measuring points, difficult measurement of large deformation, and poor real-time performance; while the displacement sensor also has shortcomings such as inability to measure inaccessible points and difficulty in lateral displacement measurement; there are also disadvantages such as the use of global satellite systems (GPS) technology for bridge deformation monitoring
However, at present, many bridge safety monitoring systems are aimed at highway bridges, and there is no effective bridge safety monitoring system for railway bridges with their own characteristics. Minor changes in bridges. At present, many bridges in China have been built for many years. The safety of railway bridges seriously affects the safe operation of railways. It is imperative to establish a special railway bridge safety monitoring system.
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[0019] Such as figure 1 , 2 , 3 and 4: the monitoring system consists of six parts: CRNSS deformation monitoring system, data processing host, roadside alarm radio station, 3G module, and station monitoring center. The CRNSS deformation monitoring system consists of outdoor sensors, antennas, antenna controllers, and CRNSS receivers. The monitoring point is released in the monitored area, the outdoor sensor is fixed on the detected part, the monitoring point is equipped with a reference station, and the wireless bridge or cable communication method is used between the monitoring point and the reference station; the reference station It is mainly composed of a monitoring point antenna, an antenna controller and a CRNSS receiver. The output end of the monitoring point antenna is connected to the CRNSS receiver through the antenna controller, and the output end of the CRNSS receiver is connected to the data processing host through a wireless bridge or cable communication. The d...
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The invention relates to a compatible railroad bridge condition monitoring system based on a Beidou satellite, and belongs to the technical field of electronic monitoring. An output end of a monitoring point antenna is connected with a CRNSS receiver through an antenna controller. An output end of the CRNSS receiver is connected with a data processing hose computer in a wireless network bridge communication mode or a cable communication mode. The data processing hose computer is connected with a roadside early warning radio station through a radio station. The roadside early warning radio station and a train are also in communication through the radio station. The data processing hose computer is connected with a station monitoring center through a third generation telecommunication (3G) module. By means of the compatible railroad bridge condition monitoring system based on the Beidou satellite, when the situation that deformation of a bridge exceeds a predetermined danger level is monitored before toppling of the bridge, the situation information can be sent to the station monitoring center through a 3G network, the station monitoring center analyzes historical data of a monitoring point to obtain a deformation trend of the monitoring point, and therefore the happening time of a danger can be forecasted, and the station monitoring center is enabled to timely grasp the dangerous conditions of a road; data analysis is conducted through long-time monitoring of the bridge to estimate the healthy conditions of the bridge and realize early warning on insecurity; and continuous monitoring for 24 hours a day all year round can be realized.
Description
technical field [0001] The invention relates to a Beidou-compatible railway bridge state monitoring system, which belongs to the technical field of electronic monitoring. Background technique [0002] With the advancement of science and technology and the needs of transportation, real-time health monitoring of bridges has received more research and attention. The health status of bridges on the railway line is related to the safety of trains. By continuously monitoring the deformation of bridges, bridge danger warnings and alarms can be realized, which helps prevent train accidents caused by unsafe bridges. [0003] In recent years, with the development of high-precision positioning technology, positioning equipment has developed into unattended, continuous operation for many years, and the positioning accuracy can reach millimeter level. This technology has been widely used in the monitoring of dams, bridges, landslides, road subsidence, tailings ponds, and glacier movemen...
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IPC IPC(8): G01B15/06G01S19/42G08C17/02
Inventor陈立胡敏惠陈敏李全军张国虎幸源东
Owner西北铁道电子股份有限公司