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RFID-based high-precision positioning system in train tunnel

A positioning system and high-precision technology, applied in satellite radio beacon positioning systems, radio wave measurement systems, measurement devices, etc., can solve the problems that GNSS positioning technology cannot achieve train positioning, and inertial measurement unit long-term work positioning results diverge. , to achieve the effect of reducing the occurrence of railway safety accidents, good environmental adaptability, and maintaining continuous work.

Pending Publication Date: 2020-01-14
中科凯普(北京)导航通信技术有限公司
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Problems solved by technology

[0007] The object of the present invention is to overcome the problem that the GNSS positioning technology cannot realize the train positioning and the long-time work positioning results of the inertial measurement unit diverge in the environment where the navigation satellite signal cannot reach such as a tunnel. In order to achieve the above-mentioned purpose, the present invention Adopt the following technical solutions:

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  • RFID-based high-precision positioning system in train tunnel
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[0027] The present invention will be further described in detail below in conjunction with specific embodiments and accompanying drawings.

[0028] see figure 1 , an RFID-based high-precision positioning system in a train tunnel, including a multi-mode GNSS receiver 1, an inertial measurement unit 2, a data processing unit 5, an RFID radio frequency tag 4, an RFID card reader 3, and a train position information monitoring system 6 .

[0029] A multi-mode GNSS receiver 1 and an inertial measurement unit 2 are installed on the train to output the position information of the train. The antenna of the multimode GNSS receiver 1 needs to be installed on the top outside the train to ensure the visibility of satellite signals in an open environment. When installing the inertial navigation equipment, pay attention to the installation direction, and make the indicating arrow on the equipment consistent with the traveling direction of the train. Preferably, the multi-mode GNSS receive...

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Abstract

An RFID-based high-precision positioning system in a train tunnel comprises a multi-mode GNSS receiver, an inertial measurement unit, a data processing unit, RFID tags, an RFID card reader, and a train position information monitoring system. The RFID-based high-precision positioning system in the train tunnel provided by the invention has the advantages that precise train position information canbe output uninterruptedly, and the applicability to a high-speed train with a speed of 350 km per hour is achieved.

Description

technical field [0001] The invention relates to the high-precision positioning of the vehicle position when the rail transit vehicle travels into the tunnel, in particular to an RFID-based high-precision positioning system in the train tunnel. Background technique [0002] High-speed trains run at high speeds, have high traffic density, and have short space intervals between front and rear tracking trains. The train control system needs to accurately measure the position of the train running on the line in order to provide correct control information for the train. The traditional train control system uses a fixed block method to control the train operation, and relies on the track circuit to detect the position of the train on the line, so as to provide driving permission conditions for subsequent trains. With the continuous increase of train speed and the further reduction of the distance between trains, the discrete position information provided by the track circuit canno...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S19/47G01S19/48G01S19/49
CPCG01S19/47G01S19/48G01S19/49
Inventor 王兆瑞张辰东孙文杰金声震艾国祥
Owner 中科凯普(北京)导航通信技术有限公司
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