Train brake testing curve automatic judgment method

A technology of test curve and automatic judgment, which is applied in the direction of vehicle testing, machine/structural component testing, measuring devices, etc., and can solve problems such as inconvenient automatic management

Active Publication Date: 2018-02-27
上海全路通铁道装备有限公司
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Problems solved by technology

[0002] The test of the train braking process can be controlled by the train brake. At present, in the test of the train brake machine, it is necessary to manually judge and operate the star

Method used

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  • Train brake testing curve automatic judgment method
  • Train brake testing curve automatic judgment method
  • Train brake testing curve automatic judgment method

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Embodiment 1

[0053] like Figure 1-4 As shown, the present invention provides a kind of train brake test curve automatic judgment method, comprises the following steps:

[0054] 1a. Determination of leakage: the statistical average slope of n sampling values ​​(10≤n≤60) on the air pressure curve:

[0055]

[0056] The statistical average slope is used to calculate the leakage, which can reduce the influence of sampling noise on the calculation results.

[0057] 1b. Determine the first-order difference quotient at the i-th air pressure value: kPa / s, in order to reduce the influence of noise, the moving average of 10 sampling points should be processed:

[0058] kPa / s, the first-order difference quotient reflects the ups and downs of the air pressure curve at the i-th air pressure value, It means that the air pressure curve is rising (the air pressure increases with time, the wind filling process), It means that the air pressure curve is declining (air pressure decreases with tim...

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PUM

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Abstract

The invention discloses a train brake testing curve automatic judgment method. The train brake testing curve automatic judgment method comprises the following steps of measuring a leakage amount, measuring first-order difference quotient at the i th air pressure value, measuring second-order difference quotient at the i th air pressure value and conducting a main pipe leakage test, a sensitivity leakage test, a stability leakage test, a brief test and a pressure maintaining test lasting for a certain time according to pressure maintaining leakage amount calculation and leakage interval mark points. By calculating the statistics average slope of n sampling values (10<=n<=60) on an air pressure curve, the first-order difference quotient at the i th air pressure value, the second-order difference quotient at the i th air pressure value and conducting the main pipe leakage test, the sensitivity leakage test, the stability leakage test, the brief test and the pressure maintaining test lasting for a certain time, the functions of calculating and finally and automatically judging train brake testing curve real-time leakage are enabled, and manual operation and judgment are reduced.

Description

technical field [0001] The invention relates to the field of train braking experiments, in particular to a method for automatically judging test curves of train brakes. Background technique [0002] The test of the train braking process can be controlled by the train brake. At present, in the test of the train brake machine, it is necessary to manually judge and operate the starting point of each pressure-holding leakage test, and then judge whether the leakage is qualified, which is not convenient for automatic management. The personnel caused great inconvenience. Contents of the invention [0003] The technical problem to be solved by the present invention is to overcome the defects of the prior art and provide a method for automatically judging the test curve of the train brake, which realizes the real-time leakage calculation and the final automatic judgment function of the test curve of the train brake, and reduces manual labor. operation and judgment. [0004] In o...

Claims

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Application Information

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IPC IPC(8): G01M17/007
CPCG01M17/007
Inventor 李君
Owner 上海全路通铁道装备有限公司
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