Vehicle positioning system and method

A vehicle positioning and vehicle technology, which is applied in the field of vehicle engineering, can solve the problems of low positioning accuracy and susceptibility to external magnetic field interference, and achieve the effect of improving positioning accuracy and reducing the impact of recognition accuracy

Active Publication Date: 2020-02-21
BYD CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] For this reason, the first purpose of the present invention is to propose a vehicle positioning system to reduce the influence of the external environment on the recognition accuracy, improve the positioning accuracy, and solve the problems of low positioning accuracy and susceptibility to external magnetic field interference in the prior art

Method used

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  • Vehicle positioning system and method
  • Vehicle positioning system and method

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Embodiment Construction

[0036] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary and are intended to explain the present invention and should not be construed as limiting the present invention.

[0037] The following describes the vehicle positioning system and method according to the embodiments of the present invention with reference to the accompanying drawings.

[0038] Since the vehicle positioning technology based on RFID technology uses electromagnetic field for communication, it is vulnerable to strong electromagnetic interference brought by the vehicle traction motor system and the outside world when the vehicle is running.

[0039] In view of the above problems, an embodiment of the present invention proposes a ...

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Abstract

The invention provides a vehicle positioning system and a vehicle positioning method. The system comprises a laser emitting module, a laser receiving module, a signal processing module arranged on thevehicle and a groove pair arranged on the track of the vehicle. The groove pair comprises two grooves with different widths. Wherein the laser receiving module is provided with a light blocking plateon the first surface facing the laser emitting module; When the laser beam emitted by the laser emitting module irradiates the first track segment without the groove pair, the laser receiving modulecannot receive the diffusely reflected laser beam, When the laser light emitted by the laser emitting module is irradiated on the second track segment provided with the groove pair, the laser receiving module receives the laser light diffusely reflected by the groove pair on the second track segment. Through the system, the influence of the external environment on the identification accuracy can be reduced, the positioning accuracy can be improved, and the problems of low positioning accuracy and susceptibility to external magnetic field interference in the prior art can be solved.

Description

technical field [0001] The invention relates to the field of vehicle engineering, in particular to a vehicle positioning system and method. Background technique [0002] As the core technology of urban rail transit system, vehicle positioning technology is related to all aspects of vehicle driving safety and control of vehicle safety operation. With the development and popularization of urban rail transit, vehicle positioning technology in urban rail transit system has gradually become a research hotspot. [0003] At present, in the urban rail transit system, the more commonly used vehicle positioning technology is radio frequency identification (Radio Frequency Identification, RFID) technology, using the transponder installed on the track and the transponder transmission unit (Balise Transmission Module, BTM) installed on the vehicle to identify Positioning of vehicles in motion. When the vehicle passes, the transponder next to the track sends data to the BTM installed on...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B61L25/02
CPCB61L25/02B61L25/023
Inventor 周全王文松王发平
Owner BYD CO LTD
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