Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Apparatus and method for measuring speed of rail vehicle

A technology for rail vehicles and vehicles, applied in the field of speed devices, can solve the problems of being susceptible to external interference, low Doppler frequency, and reduced measurement accuracy, and achieve convenient maintenance and later maintenance, simple operation, and strong environmental adaptability. Effect

Inactive Publication Date: 2018-04-24
ZHUZHOU CSR TIMES ELECTRIC CO LTD
View PDF4 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method requires that the ground (orbit) as the detection surface must ensure that the radar has sufficient echoes. Because rain and snow can easily cause the detection surface to refract radar waves, especially when the detection surface is icy, it will cause false measurements. At the same time, when the speed is low The Doppler frequency is relatively small and is susceptible to external interference, which will lead to a decrease in measurement accuracy

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Apparatus and method for measuring speed of rail vehicle
  • Apparatus and method for measuring speed of rail vehicle
  • Apparatus and method for measuring speed of rail vehicle

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0027] The present invention will be further described below in conjunction with accompanying drawing.

[0028] figure 1 A device 10 for measuring the speed of a rail vehicle is schematically shown. Such as figure 1 As shown, the apparatus 10 includes at least two test devices 2 . The test devices 2 are arranged on the vehicle 1 at intervals along the traveling direction of the vehicle 1 , and the test devices 2 are arranged in a straight line. When the vehicle 1 is running, at least two test devices 2 will cross the sleeper 3 in turn, and then a plurality of test devices 2 will generate pulse signals with phase lags in turn when they pass through the same sleeper 3 (such as figure 2 shown). The device 10 also includes a processor (not shown in the figure), which obtains the speed of the vehicle 1 according to the time difference between the pulse signals sent out by the test devices 2 and the distance between the corresponding test devices 2 .

[0029] Thus, the present...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention provides an apparatus and a method for measuring the speed of a rail vehicle. The apparatus includes at least two test devices and a processor. The test devices are fixedly arranged on avehicle at intervals along the moving direction of the vehicle, and send out a pulse signal when the vehicle passes by a sleeper. The processor obtains the speed of the vehicle according to the timedifference between the at least two test devices in pulse signal sending and the interval distance between the corresponding test devices. The apparatus has the advantages of simple structure, high accuracy and good maintainability.

Description

technical field [0001] The invention relates to the field of speed measurement of rail transit vehicles, in particular to a device and method for measuring the speed of rail vehicles, especially a device and method for measuring the speed of medium and low-speed magnetic levitation vehicles. Background technique [0002] As a new generation of transportation, medium and low-speed maglev vehicles have many advantages such as high speed, strong adaptability to terrain, flexible route selection, safety, and environmental protection. In the maglev vehicle safety and automatic control system, accurate and timely acquisition of vehicle position and speed, and real-time transmission of vehicle operating conditions to the ground control center to accept orders from the control center are the basic guarantees for vehicle safety and reliable operation. In the safety and command and dispatch system of maglev vehicles, the vehicle speed measurement and positioning system plays an import...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): G01P3/64G01P13/02
CPCG01P3/64G01P13/02
Inventor 卢学云陈高华许义景杨文昭
Owner ZHUZHOU CSR TIMES ELECTRIC CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com