Track inspection system space-time synchronization device based on assistance of double vertical accelerometers
A technology of vertical acceleration and accelerometer, which is applied in the direction of railway signals and safety, and can solve problems such as time synchronization to achieve accurate correspondence and improve measurement efficiency
Pending Publication Date: 2021-12-28
南京矢量智能测控技术有限公司
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Problems solved by technology
[0005] The technical problem to be solved by the present invention is: how to solve the time synchronization problem of the multi-sensors carried on the track inspection system, and accurately correspond the sensor sampling points to the track position points, improve the working efficiency of the on-board measurement system, and do not need Signal interaction with the train
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[0046] The present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments.
[0047] Such as figure 1 Shown is a schematic diagram of the working mechanism of the present invention.
[0048] A space-time synchronization device for track inspection system based on dual vertical accelerometers. The device consists of a power supply module, a gyroscope component, an accelerometer component, an isolation module, a data receiving module, a fault detection module, a data smoothing module, a communication module, and a calibration compensation Module, Gravity Sensitive Error Compensation Module, Temperature Compensation Module, Time Reference Recording Module, Attitude Processing Module, Speed Processing Module, Reference Speed Calculation Module, Data Fusion Module, Position Binding Module, Frequency Calculation Module, Frequency Division Module, High Precision Clock Module, time synchronization module, sensor i...
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The invention belongs to the field of urban rail transit and discloses a space-time synchronization device of a rail inspection system based on assistance of double vertical accelerometers. The method is suitable for a vehicle-mounted measurement inspection system, an odometer does not need to be additionally arranged on a wheel of a railway vehicle, signal interaction with a train is not needed, and reference speed measurement can be achieved based on output information of the two vertical accelerometers fixedly installed at the opposite positions. According to the method, the estimated train speed is converted into the equivalent trigger pulse, synchronous trigger sampling is conducted on the sensor carried by the train through the trigger pulse so as to achieve time synchronization, accurate correspondence between the accurate position point of the train and the sampling point of the sensor is achieved through the high-precision position estimation value, space-time synchronization of the measurement information of the sensor carried by the inspection system is realized, and measurement efficiency can be effectively improved.
Description
technical field [0001] The invention belongs to the field of urban rail transit, and relates to sensor information synchronization of a rail inspection system, in particular to a time-space synchronization device for a rail inspection system based on dual vertical accelerometers. Background technique [0002] In recent years, urban rail transit has developed rapidly, and urban subways, trams, intercity railways and other means of transportation have been vigorously constructed in various places, which has greatly improved the convenience of people's travel. With the increase of rail transit line construction and the increase of line transportation tasks, the monitoring of track health status has become a matter of great concern to rail construction departments and line operating units. With the increase of operation time, the track will gradually age, and there will be problems such as excessive ride comfort, gauge change, fastener damage and even rail breakage, which greatl...
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IPC IPC(8): B61L25/02
CPCB61L25/021B61L25/025
Inventor 顾曼其他发明人请求不公开姓名
Owner 南京矢量智能测控技术有限公司