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Bogie instability detection method and system

A detection method and detection system technology, applied in the direction of railway vehicle testing, railway signal and safety, etc., can solve problems such as unfavorable train safety, achieve the effects of high detection accuracy, perfect system, and improve safety

Active Publication Date: 2021-05-25
CRRC CHANGCHUN RAILWAY VEHICLES CO LTD +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, running in this state for a long time is obviously detrimental to the safety of the train

Method used

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  • Bogie instability detection method and system
  • Bogie instability detection method and system
  • Bogie instability detection method and system

Examples

Experimental program
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Embodiment 1

[0051] This embodiment provides a bogie instability detection method, such as figure 1 shown, including the following steps:

[0052] Obtain the lateral acceleration signal of the bogie;

[0053] Obtain the signal of the traverse distance between the wheel set and the track;

[0054] Determine whether the current lateral acceleration signal is greater than the lateral acceleration threshold, if so, determine that the bogie is in an unstable state, if not, enter the next step;

[0055] Determine whether the current traversing distance signal is greater than the traversing distance threshold, if so, determine that the bogie is in an unstable state, if not, reacquire the lateral acceleration signal of the bogie and the traversing distance signal between the wheel set and the track.

[0056] This embodiment is applicable to the super-zero working condition, and has high detection accuracy for bogie instability detection. Specifically, in this embodiment, on the basis of judging...

Embodiment 2

[0058] This embodiment provides a bogie instability detection method, such as figure 2 shown, including the following steps:

[0059] S1. Obtain the lateral acceleration signal of the bogie;

[0060] After step S1, the following steps are also included:

[0061] A. Sampling the lateral acceleration signal of the bogie to obtain the sampled lateral acceleration signal;

[0062] B. Use a low-pass filter to filter the sampled lateral acceleration signal to eliminate frequency aliasing, and obtain a processed lateral acceleration signal.

[0063] Steps A and B realize the down-sampling processing of the lateral acceleration signal of the bogie, which can make the lateral acceleration signal of the bogie obtain higher frequency resolution.

[0064] S2. Obtain the traversing distance signal between the wheel set and the track; the specific steps are as follows:

[0065] S201. Obtain the position information of the designated point when the bogie is in a normal state; it should ...

Embodiment 3

[0077] This embodiment provides a bogie instability detection system for realizing the bogie instability detection method in Embodiment 1 or 2, and the bogie instability detection system includes:

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Abstract

The invention relates to the technical field of rail traffic safety detection, and aims to provide a bogie instability detection method and system. The bogie instability detection method comprises the following steps: acquiring a transverse acceleration signal of a bogie; acquiring a transverse movement distance signal between a wheel pair and a track; judging whether the current transverse acceleration signal is greater than a transverse acceleration threshold or not, and if so, judging that the bogie is in an unstable state; if not, determining whether the current transverse movement distance signal is larger than a transverse movement distance threshold value or not, if so, determining that the bogie is in an unstable state, and if not, acquiring the transverse acceleration signal of the bogie and the transverse movement distance signal between the wheel pair and the track again. The bogie instability detection system comprises a detection module, a signal processing module, a transverse displacement calculation module and an alarm evaluation module. The bogie instability detection method and system provided by the invention are suitable for a super-zero working condition, and the detection precision of bogie instability detection is high.

Description

technical field [0001] The invention relates to the technical field of rail transit safety detection, in particular to a bogie instability detection method and system. Background technique [0002] In recent years, the rapid development of virtual rail trains in my country has further increased the speed of trains, but the safety performance of trains has always been the focus of our attention. The snaking motion of trains is one of the inherent characteristics of rail vehicles. The fundamental reason for its formation is that the wheel treads of trains have taper. Since the taper of wheel treads is a necessary condition for railway vehicles to bend, the snaking motion of railway vehicles cannot be fundamentally eliminate. However, when the running speed of the train exceeds the critical speed, the stable snaking motion will develop into snaking instability, which brings great safety risks. [0003] With the six operating speed increases since 1997, the problem of snaking ...

Claims

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Application Information

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IPC IPC(8): B61L23/00G01M17/08
CPCB61L23/00G01M17/08
Inventor 林建辉陈春俊杨岗赵海波石海峰吴洪霞
Owner CRRC CHANGCHUN RAILWAY VEHICLES CO LTD
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