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A Method for Determining Confidence Degree of Measured Value of Wheelset Size Online Detection System

A technology of detection system and determination method, which is applied in the field of traffic safety engineering, can solve the problems that the degree of confidence is difficult to be reasonably quantified, and the degree of reliability can be effectively judged, so as to achieve more reasonable calculation results, improve reliability, and broad market prospects Effect

Active Publication Date: 2019-10-15
GUANGZHOU METRO GRP CO LTD
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Problems solved by technology

[0007] However, in the existing research and analysis, only referring to the measurement uncertainty and measurement accuracy of the wheel set size online detection system cannot directly and effectively judge the reliability of each measurement value of the wheel set size online detection system, in other words , it is difficult to reasonably quantify the confidence of each measurement result

Method used

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  • A Method for Determining Confidence Degree of Measured Value of Wheelset Size Online Detection System
  • A Method for Determining Confidence Degree of Measured Value of Wheelset Size Online Detection System
  • A Method for Determining Confidence Degree of Measured Value of Wheelset Size Online Detection System

Examples

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Embodiment 1

[0086] Taking a set of wheel set size online detection system installed on site as the test object, two adjacent measurement data measured by the wheel set size online detection system are selected.

[0087] Define the evaluation index of the confidence degree of the measured value of the wheel set size online detection system, including detection consistency uncertainty J, vehicle consistency uncertainty V, and algorithm consistency uncertainty A; each evaluation index is further divided into A collection of influencing factors to determine the level of assessment of confidence in a measured value, see appendix image 3 .

[0088] After comprehensively comparing the different influencing factors under each evaluation index, the evaluation factors of each influencing factor are determined to be detection degree λ (referring to the degree to which each influencing factor can be detected), rationality τ (referring to the degree to which each influencing factor takes The extent ...

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Abstract

The invention discloses a method for determining the confidence of a measured value of a wheel-set size online detection system. The method includes the steps of S1, determining a plurality of evaluation indicators for a measured value of a wheel-set size online detection system; S2, dividing the determined plurality of evaluation indicators into a set of influence elements to determine the evaluation hierarchy of the confidence of the measured value; S3, determining evaluation factors that can be used for accurately evaluating the influence elements, and performing grade evaluation for the evaluation factors by a fuzzy number; S4, calculating evaluation weights of other different evaluation factors under each evaluation indicator by the analytic hierarchy process; S5, quantizing parameters of the evaluation indicators comprehensively; and S6, determining the confidence of the measured value of the wheel-set size online detection system. According to the invention, the reliability degree of each measured value of the wheel-set size online detection system can be determined directly and effectively so that the confidence of each measurement result can be reasonably quantized.

Description

technical field [0001] The invention belongs to the technical field of traffic safety engineering, and in particular relates to a method for determining the confidence degree of a measurement value of an online wheel set size detection system. Background technique [0002] In the construction of basic transportation such as subways and light rails, the wheelset not only bears the entire weight of the car body, but also is responsible for transmitting the force between the wheelset and the rail. Therefore, it is an extremely important part of the running part of the vehicle. In order to continuously obtain accurate wheel set size parameters and grasp the quality status of the wheel set in real time, many experts, scholars, and companies at home and abroad have developed various online wheel set size detection systems. However, due to the imperfection of the measurement method of the detection system, the influence of factors such as test instruments and the on-site environmen...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01B21/00
Inventor 苏钊颐李宏辉
Owner GUANGZHOU METRO GRP CO LTD
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