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State self-checking method of combined speed measuring and positioning system for train

A technology for positioning systems and state measurement, applied in radio wave measurement systems, testing/calibration of speed/acceleration/shock measurement equipment, measurement devices, etc., to reduce complexity, improve state detection performance, and reduce redundant modules Effect

Active Publication Date: 2011-01-19
TRAFFIC CONTROL TECH CO LTD
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Problems solved by technology

[0007] The technical problem to be solved by the present invention is to improve the detection performance of the sensor state, reduce the complexity of the combined system, save engineering expenditure and maintenance cost

Method used

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  • State self-checking method of combined speed measuring and positioning system for train
  • State self-checking method of combined speed measuring and positioning system for train
  • State self-checking method of combined speed measuring and positioning system for train

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Embodiment Construction

[0036] The combined speed measurement and positioning system state self-inspection method proposed by the present invention will be described in detail in conjunction with the accompanying drawings and embodiments.

[0037] The combined speed measurement and positioning system state self-inspection method proposed by the present invention, wherein the combined speed measurement and positioning system especially refers to the speed measurement and positioning system combined with pulse velocity sensor and Doppler radar, and the self-inspection method is used for speed measurement and positioning in the above-mentioned system, The self-inspection of speed sensor and radar sensor state is especially applied in the state self-inspection of train speed measurement and positioning system in the train operation control system. The output information of dual-channel pulse speed sensor and Doppler radar is used as the basis for state self-inspection, and the comparison schemes such as "...

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Abstract

The invention provides a state self-checking method of a combined speed measuring and positioning system for a train, which comprises the following steps: judging the state of a speed sensor by using the respective multi-path information of the speed sensor for carrying out the redundant check; judging the measuring state of the speed sensor by taking radar measuring data as reference; judging the measuring state of a radar sensor according to the measuring data of the speed sensor and the output state word of a radar; and determining a system structure reconstruction scheme based on a system state transfer model according to the state judging results of the speed sensor and the radar, outputting speed measuring and positioning information which does not contain invalid or fault sensor or radar measuring results, and giving system state information representation or giving state representation of invalid measuring output when all sensors are invalid. The method of the invention improves the state detection performance of the sensors, reduces the complexity of the combined system, and can further save the engineering expenses and the maintenance cost.

Description

technical field [0001] The invention relates to the technical field of combined speed measurement and positioning, in particular to a state self-inspection method of a train combined speed measurement and positioning system. Background technique [0002] Real-time and accurate speed and position information are important parameters to ensure the normal operation of the train operation control system and the safe operation of the train. In the train operation control system, the train speed measurement and positioning system uses the vehicle speed measurement and positioning sensor (such as pulse speed sensor, Doppler radar, etc.) The control system realizes the running, stopping, accelerating and slowing of the train. [0003] At present, there are a variety of train speed measurement and positioning methods in rail transit. According to the source of position and speed information, the speed measurement and positioning methods can be divided into two categories, namely, th...

Claims

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Application Information

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IPC IPC(8): G01P21/02G01S7/40
Inventor 周达天刘波郜春海张建明刘江
Owner TRAFFIC CONTROL TECH CO LTD
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