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A method and system for intelligent calculation of rail transit train running speed
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A technology for rail transit trains and running speed, applied in the field of rail transit, can solve the problem of inability to obtain train running speed data, etc., to achieve the effect of intelligent computing
Active Publication Date: 2022-04-15
CHINA RAILWAY SIYUAN SURVEY & DESIGN GRP
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Problems solved by technology
Due to various reasons such as professional subdivision, departmental jurisdiction and division of labor, it is often impossible to obtain accurate train running speed data in the aforementioned two scenarios of rail vibration reduction product vibration reduction performance test and environmental vibration source strength test
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Embodiment 1
[0041] This embodiment discloses a method for intelligently calculating the running speed of rail transit trains, such as figure 1 ,include:
[0042] S100. Obtain the dynamic displacement data of the rail during the passing period through the displacement sensor and the signal acquisition device, and the acquired dynamic displacement data includes two columns of displacement data and time data.
[0043] Specifically, in some preferred embodiments, the displacement data includes vertical or lateral dynamic displacement data of the rail. Specifically, the acquired dynamic displacement data such as figure 2 .
[0044] S200. Comparing and analyzing the obtained rail dynamic displacement data to obtain the maximum value A and the minimum value B of the displacement data; specific utilization figure 2 The displacement data and time data in , with the time data as the abscissa and the displacement data as the ordinate, form a dynamic displacement data time course diagram, such a...
Embodiment 2
[0059] This embodiment discloses an intelligent calculation system for rail transit train running speed, which is characterized in that it includes: a track displacement acquisition module 1, a numerical comparison module 2, a critical moment acquisition module 3, and a running speed calculation module 4; wherein:
[0060] Track displacement acquisition module 1, through displacement sensor and signal acquisition equipment, obtains the rail dynamic displacement data of passing period, the dynamic displacement data that obtains comprises two columns of displacement data and time data; figure 2 described in , and will not be repeated here.
[0061] Numerical comparison module 2, which compares and analyzes the obtained rail dynamic displacement data, and obtains the maximum value A and the minimum value B of the displacement data; compares the absolute value of the maximum value A and the minimum value B, and according to the absolute value of the maximum value A and the minimum...
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Abstract
An intelligent calculation method for rail transit train running speed, comprising: a displacement sensor acquires rail dynamic displacement data; obtains a maximum value A and a minimum value B of the displacement data, and determines a key constant C according to the absolute values of A and B; and according to the key constant C, Obtain the first critical moment t1; obtain the second initial moment t2 based on the first initial moment t0, the first critical moment t1, the fixed distance L of train vehicles and the line design speed V1, and use t2 as the starting point to obtain the second critical moment t3 ; According to the distance L, t1 and t3 of the train vehicles, the train running speed V2 is calculated. The present invention is applied in multiple scenarios such as the vibration reduction performance test of rail vibration reduction products, the vibration source strength test of the rail transit environment, etc., and can accurately obtain the running speed of the train passing through the test section. The invention intelligently extracts the time gap of the passing time of the wheels of the train vehicle, realizes the intelligent calculation of the running speed of the train at the passing time, and can obtain the running speeds of different trains at the passing time through a cycle.
Description
technical field [0001] The present invention relates to the technical field of rail transit, and in particular to a method and system for intelligently calculating the running speed of rail transit trains. Background technique [0002] In the field of rail transit, when conducting the vibration damping performance test of track damping products, it is required that the test section of the damped track and the test section of the non-damped track used for comparison have the same train passing speed, so it is necessary to obtain the train passing test during the test The running speed of the section; when carrying out the analog test of the strength of the environmental vibration source, the running speed of the train passing through the analog test section is required to be 75% to 125% of the line design speed, so it is also necessary to obtain the train passing through the test section during the test. run speed. [0003] For the measurement of train running speed, the exi...
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