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A train odometer and mileage calculation method based on ultrasonic

An ultrasonic and odometer technology, applied in the field of rail transit, can solve problems such as large mileage error

Active Publication Date: 2022-08-05
SOUTHWEST JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Aiming at the above-mentioned problems in the prior art, the present invention provides an ultrasonic-based train odometer and a mileage calculation method, which solves the problem that the mileage measured by the mileage measuring device in the prior art has a large error

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  • A train odometer and mileage calculation method based on ultrasonic

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Embodiment Construction

[0038] The specific embodiments of the present invention are described below to facilitate those skilled in the art to understand the present invention, but it should be clear that the present invention is not limited to the scope of the specific embodiments. For those skilled in the art, as long as various changes Such changes are obvious within the spirit and scope of the present invention as defined and determined by the appended claims, and all inventions and creations utilizing the inventive concept are within the scope of protection.

[0039] like figure 1 As shown, this solution provides an ultrasonic-based train odometer, which includes:

[0040] The ultrasonic transmitter, which is installed at the bottom of the train, transmits ultrasonic waves to the bottom of the train, and the emission direction of the ultrasonic waves forms an angle α with the horizontal plane, and the angle α is 45°.

[0041] Ultrasonic receiving sensor, which is installed at the bottom of the ...

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Abstract

The invention provides an ultrasonic-based train odometer and a mileage calculation method, which comprises an ultrasonic transmitter, an ultrasonic receiving sensor, a signal processing module, a data processing module and a wireless communication module. The method for calculating the mileage of a train by using the ultrasonic-based train odometer of the present scheme includes the following steps: measuring the distance value H and the receiving time interval x through ultrasonic waves, and judging whether the ultrasonic wave is reflected from the surface of the sleeper according to whether the receiving time interval x is equal to the interval time , and then judge whether the distance value H is within the judgment value range. The error that occurs when the traditional train odometer performs mileage statistics is avoided, and the accuracy of mileage calculation is improved.

Description

technical field [0001] The invention relates to the technical field of rail transportation, in particular to an ultrasonic-based train odometer and a mileage calculation method. Background technique [0002] As odometers are more and more widely used in the field of rail transportation, involving speed measurement, distance measurement, positioning, etc., the requirements for the accuracy of odometers are also higher. A commonly used method for mileage calculation is to measure the number of revolutions of the wheel and multiply it by the circumference of the wheel. For example, the single-axis fiber optic gyro odometer and the coded odometer calculate the train displacement by calculating the angular displacement of the train wheels. This method mainly Affected by counting error and wheel diameter loss. The wheel diameter loss is the change of the circumference of the wheel after a long time of use. The influence factor of this error is difficult to artificially reduce. An...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01C22/00G01S15/08G01S7/539
CPCG01C22/00G01S15/08G01S7/539
Inventor 李浩文王富圣马致远梁明一肖嵩
Owner SOUTHWEST JIAOTONG UNIV