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Speed measurement and mileage calculation method and system for maglev train

A technology for maglev trains and mileage, applied in the direction of measuring devices, surveying and navigation, instruments, etc., can solve problems such as interference in the turnout area, failure to provide partial acceleration values, and unclear track angles

Inactive Publication Date: 2019-09-03
BEIJING ENTERPRISES HLDG MAGLEV TECH DEV
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AI Technical Summary

Problems solved by technology

[0005] 1. The distance between adjacent eddy current sensors and the acceleration of the train determine that the existing speed measurement system has discrete speeds and large errors under low-speed operating conditions, which cannot meet the needs of precise parking of trains entering the station
[0006] 2. Due to the characteristics of the sensor itself, it has high requirements on the surrounding electromagnetic sensitive materials or strong electric and magnetic fields. During the implementation of the scheme, there is obvious interference in the switch area
For the speed measurement system, the orbit angle is not clear at this time, the accelerometer can only provide the total acceleration value, but cannot provide the required direction component acceleration value, and the speed value obtained by integration does not match the actual value

Method used

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  • Speed measurement and mileage calculation method and system for maglev train
  • Speed measurement and mileage calculation method and system for maglev train
  • Speed measurement and mileage calculation method and system for maglev train

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Embodiment Construction

[0095] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0096] Such as figure 1 Shown is the method flow chart of Embodiment 1 of the speed measurement and mileage calculation method of a maglev train disclosed by the present invention, and the method may include the following steps:

[0097] S101, obtaining the measured speed of the maglev train;

[0098] When the real-time speed and real-time mileage of the maglev train need to be calculated, first, the speed of the maglev train is measured during the operation ...

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Abstract

The invention discloses a speed measurement and mileage calculation method and system for a maglev train. The method comprises the following steps: obtaining a measured speed of the maglev train; obtaining an accelerated speed of the maglev train; carrying out calculation based on the measured speed and the accelerated speed to obtain a real-time speed of the maglev train; and obtaining a real-time mileage of the maglev train based on the measured speed and the accelerated speed. The method and system disclosed by the invention has the advantages that the real-time speed and the real-time mileage are calculated through the measured speed and the accelerated speed of the train which are comprehensively obtained, so that compared with the prior art, the method and system achieves higher precision in the measurement of the real-time running speed of the train and higher precision in calibration of position information of the train.

Description

technical field [0001] The invention relates to the technical field of maglev trains, in particular to a speed measurement and mileage calculation method and system for a maglev train. Background technique [0002] Running speed and position information are the main source of control information for train traction and braking systems, and also the main source of control signals for precise vehicle control and automatic train driving systems near stations. [0003] At present, the principle of the speed measurement system of medium and low-speed maglev trains is to install multiple eddy current sensors under the train. During the operation of the train, the pulses are obtained by sensing the sleepers through the sensors, and then the running speed of the train is calculated according to the time difference of the pulses and the distance between the sensors. And get running mileage through accumulation. [0004] This existing method has the following problems: [0005] 1. Th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01C23/00
CPCG01C23/00
Inventor 王丽艳吴媚蕊张学山张益晨耿俊利王俊平骆力
Owner BEIJING ENTERPRISES HLDG MAGLEV TECH DEV
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