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

A high-speed rail running speed estimation method using speed scanning

A technique of running velocity and velocity scanning, applied in the field of exploration geophysics

Active Publication Date: 2020-10-27
XI AN JIAOTONG UNIV
View PDF8 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The above methods need to be installed in a position where you can see the railroad tracks, and you need permission to enter the quarantine area and install equipment in the quarantine area

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
  • A high-speed rail running speed estimation method using speed scanning
  • A high-speed rail running speed estimation method using speed scanning
  • A high-speed rail running speed estimation method using speed scanning

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0056] The invention provides a method for estimating the running speed of a high-speed rail train using speed scanning, which can realize the running speed estimation of a high-speed rail train only by using the data of a seismometer outside the isolated area. The present invention firstly generates a series of force function amplitude spectra for the high-speed train train structure parameters and preset train running speeds, and then calculates the cross-correlation function between the force function amplitude spectra at various speeds and the signal amplitude spectrum received by a single detector, Finally, the speed corresponding to the maximum value of the cross-correlation function is selected as the estimated value of the train running speed.

[0057] see figure 1 , a kind of high-speed rail running speed estimation method utilizing speed scanning of the present invention, comprises the following steps:

[0058] S1, design the amplitude spectrum template function acc...

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 discloses a high-speed rail running speed estimation method utilizing speed scanning. The method comprises the following steps that: an amplitude spectrum template function is designed according to a running speed and the typical parameters of high-speed rail trains in China; signals excited when a high-speed rail passes through are intercepted in the seismic data of a single-detector; Fourier transformation is performed on the intercepted signals, so that the amplitude spectrum of the intercepted signals can be obtained; the cumulative function of the signal energy spectrum is calculated, a frequency interval where most energy of the signal energy spectrum is located is determined; cross-correlation is carried out on the amplitude spectrum template function and the actual amplitude spectrum; a maximum cross correlation coefficient in all cross correlation coefficients, and a speed corresponding to the maximum cross correlation coefficient are searched; with the speed adopted as a base point, a speed change interval is narrowed, and an amplitude spectrum template function is re-established; and cross-correlation calculation is performed on the amplitude spectrum template function and the actual amplitude spectrum again; and a speed corresponding to a maximum cross correlation coefficient is searched, and the speed is recorded as the final estimated speed vfinal of the running of the train.

Description

technical field [0001] The invention belongs to the technical field of exploration geophysics, in particular to a method for estimating the running speed of a high-speed rail using speed scanning. Background technique [0002] In 1964, the commercial operation of the Shinkansen in Japan ushered in a new era of high-speed rail development in the world. Subsequently, France, Germany, Canada, Italy, Sweden, South Korea and other countries rushed to build high-speed rail and put it into commercial operation. On August 1, 2008, China opened its first commercial high-speed rail line, the Beijing-Tianjin Intercity Railway. Up to now, the operating mileage of China's high-speed rail has reached 31,000 kilometers, which is close to 70% of the total operating mileage of the world's high-speed rail. From 00:00 on July 10, 2019, the national railways implemented a new train diagram, and 3310 pairs of trains were operated every day. With such a large number of trains running at high s...

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 Patents(China)
IPC IPC(8): G01P3/00G01V1/28G01V1/30
CPCG01P3/00G01V1/28G01V1/303
Inventor 王晓凯陈文超师振盛刘璞
Owner XI AN JIAOTONG UNIV
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