CN-116558460-B - Concave bottom car measuring and identifying method and system

CN116558460BCN 116558460 BCN116558460 BCN 116558460BCN-116558460-B

Abstract

The invention relates to a method and a system for measuring and identifying a concave bottom vehicle, wherein the method comprises the following steps of (1) monitoring and obtaining a vehicle bottom height data sequence D of a whole train passing vehicle, a vehicle bottom height data acquisition time sequence T D , a vehicle passing time sequence T p and vehicle type information, (2) identifying the concave bottom vehicle through a waveform identification algorithm by combining the vehicle bottom height information to obtain a concave bottom vehicle node number N, a starting subscript I 0 [ N ] and a stopping subscript I 1 [ N ] of each section of concave bottom vehicle data, and a clearance height h n of each section of concave bottom vehicle, (3) combining the vehicle passing time information to obtain the vehicle bottom sequential information through a sequential identification algorithm, and (4) correcting the identification results of the concave bottom vehicles in the steps (2) and (3). The invention provides a method and a system for measuring and identifying the concave bottom vehicles, which can accurately identify the number and the clearance height of the concave bottom vehicles in real time and match the proper position of the concave bottom vehicles.

Inventors

TIAN DEZHU
WANG NING
YU GUOCHENG
Fu Zhengrui
CHAI XUESONG
XUE FENG
JIN HUA
XIE JINMEI
BAO XUEZHI
YANG JIALE

Assignees

中铁科学技术开发有限公司
中国铁道科学研究院集团有限公司铁道建筑研究所
中国铁道科学研究院集团有限公司

Dates

Publication Date: 20260505
Application Date: 20230421

Claims (6)

1. The method for measuring and identifying the concave bottom car is characterized by comprising the following steps: (1) Monitoring to obtain the data sequence of the vehicle bottom height of the whole train passing vehicle Time series for acquiring vehicle bottom height data Time sequence for passing car And vehicle model information; (2) By combining the vehicle bottom height information and identifying the concave bottom vehicle through a waveform identification algorithm, the number of the concave bottom vehicle nodes is obtained Initial subscript of each section of concave bottom car data And termination subscript Clearance height of each concave bottom car , ; (3) Acquiring the pit car front position information through a front position identification algorithm by combining the car front position information; (4) Correcting the concave bottom vehicle recognition results in the steps (2) and (3) according to the vehicle type information; in the step (2), the waveform identification algorithm is as follows: (1) Data sequence of vehicle bottom height Respectively and together with A filter Convolving to obtain Strip filter waveform I.e. , ; (2) For each of the filtered waveforms Find out that the value is smaller than the threshold value All of (3) Subscript of (2) ; (3) Each group of subscripts Divided into Segment, traverse Start and stop subscripts of a segment, if The start subscript of the segment minus the first The termination subscript of the segment is less than the threshold Will be the first And (d) The segment data is combined and the data is stored, Obtaining A start and end subscript of the segment data; (4) Selecting Group filtered waveforms In (a) The most waveform subscripts are respectively used as the initial subscripts of the data of each concave chassis Termination subscript ; (5) Sequence of slave vehicle bottom heights Selecting subscript slaves To the point of Calculating the minimum value as the data of (1) Clearance height of concave-saving bottom vehicle ; In the step (3), the cis-position recognition algorithm is as follows: (1) Searching for At each moment in time Subscript of (2) So that , ; (2) Calculation of ~ And The sequence overlap ratio, selecting the order with the largest overlap ratio as the first Front position of concave-section bottom vehicle 。
2. The method for measuring and identifying a concave bottom car according to claim 1, wherein the step (4) comprises: (1) Obtaining the model and length of each section of vehicle according to the model information ; (2) According to the time sequence of passing car Calculating the passing time of each car ; (3) Calculating the passing speed of each car ; (4) Calculating the number of data points of the bottom of each section of vehicle , Is the data sampling frequency; (5) For the number of data points identified as a concave bottoming vehicle If (if) If the vehicle is in the pit bottom, the identification data of the pit bottom vehicle is reserved, otherwise, the pit bottom vehicle is misjudged and the data is deleted, wherein delta 1 、δ 2 is the upper limit and the lower limit of the ratio of the number of data points of the pit bottom vehicle to the total number of data points of the vehicle; (6) Aiming at the unrecognized vehicle which is a concave-bottom vehicle in the vehicle type information, the following position of the vehicle is found And extract the first Vehicle bottom height data corresponding to vehicle saving Finding by using the waveform recognition algorithm The headroom of (3); (7) Updating the number of the concave bottom car nodes.
3. The method for measuring and identifying the concave bottom vehicle according to claim 1, wherein the vehicle type of the concave bottom vehicle comprises a JSQ6 vehicle, a D-type vehicle and an X2H-type container flatcar.
4. A system for measuring and identifying a vehicle with a concave bottom, comprising: the data acquisition device is used for monitoring and obtaining measurement data of the whole train passing in real time, and comprises a train bottom height data sequence Time series for acquiring vehicle bottom height data Time sequence for passing car And vehicle model information; the concave bottom vehicle identification device is used for identifying the concave bottom vehicle through a waveform identification algorithm according to the measurement data to obtain the number of the nodes of the concave bottom vehicle Obtaining the initial subscript of each section of concave bottom car data And termination subscript Clearance height of each concave bottom car Wherein ; The cis-position recognition device is used for obtaining cis-position information of the concave-bottom vehicle through a cis-position recognition algorithm according to the measurement data; the correcting device is used for correcting the identification result and the sequential information of the concave bottom vehicle according to the vehicle type information; the concave bottom car recognition device adopts the following waveform recognition algorithm to recognize: (1) Data sequence of vehicle bottom height Respectively and together with A filter Convolving to obtain Strip filter waveform I.e. , ; (2) For each of the filtered waveforms Find out that the value is smaller than the threshold value All of (3) Subscript of (2) ; (3) Each group of subscripts Divided into Segment, traverse Start and stop subscripts of a segment, if The start subscript of the segment minus the first The termination subscript of the segment is less than the threshold Will be the first And (d) The segment data is combined and the data is stored, Obtaining A start and end subscript of the segment data; (4) Selecting Group filtered waveforms In (a) The most waveform subscripts are respectively used as the initial subscripts of the data of each concave chassis Termination subscript ; (5) Sequence of slave vehicle bottom heights Selecting subscript slaves To the point of Calculating the minimum value as the data of (1) Clearance height of concave-saving bottom vehicle ; The order recognition device obtains the order information of the concave-bottom vehicle based on the following order recognition algorithm: (1) Searching for At each moment in time Subscript of (2) So that , ; (2) Calculation of ~ And The sequence overlap ratio, selecting the order with the largest overlap ratio as the first Front position of concave-section bottom vehicle 。
5. The system of claim 4, wherein the calibration device performs the following operations: (1) Obtaining the model and length of each section of vehicle according to the model information ; (2) According to the time sequence of passing car Calculating the passing time of each car ; (3) Calculating the passing speed of each car ; (4) Calculating the number of data points of the bottom of each section of vehicle , Is the data sampling frequency; (5) For the number of data points identified as a concave bottoming vehicle If (if) If not, the concave bottom car is misjudged and the data is deleted; (6) Aiming at the unrecognized vehicle which is a concave-bottom vehicle in the vehicle type information, the following position of the vehicle is found And extract the first Vehicle bottom height data corresponding to vehicle saving Finding by using the waveform recognition algorithm The headroom of (3); (7) Updating the number of the concave bottom car nodes.
6. The system of claim 4, wherein the vehicle type of the vehicle comprises JSQ6, D, X2H container flatcar.

Description

Concave bottom car measuring and identifying method and system Technical Field The invention relates to the technical field of rail traffic safety detection, in particular to a method and a system for measuring and identifying a concave bottom car in shunting operation of a railway marshalling yard. Background The concave bottom car is a railway transportation car type with a concave bottom plate and is used for transporting special goods such as a large-sized transformer, a generator, a small car and the like. Because the bottom clearance of the concave bottom car is lower, the concave bottom car is forbidden to directly slide through a hump when the disassembly operation of the assembly station is performed, and the operation modes such as storage by being sent to a slide forbidden line can be only performed, so that the operation efficiency is seriously influenced. And the bottom clearance height of each concave bottom car is different, so that the identification of the concave bottom car and the position thereof before the train arrives at the marshalling station, the real-time accurate measurement of the bottom clearance height thereof and the screening of the concave bottom car with too low height are key to improving the working capacity of the marshalling station. The existing method for measuring and identifying the concave bottom car is to utilize the bottom clearance height data of the truck measured by a laser sensor to count the frequency of data points with the height lower than a certain threshold value in the data. The method has the defects that (1) the cis-position of the concave bottom car cannot be determined, cis-position information of the concave bottom car is critical to improvement of disassembly operation efficiency, (2) the identification type is few, only one concave bottom car (namely a JSQ6 type concave bottom double-layer transport car special car, JSQ6 car for short) can be identified, (3) the adaptability is poor, the identification effect on a train running at a variable speed is poor, and (4) the error correction is difficult, the error correction is difficult after the error judgment is generated, and the operation amount for confirming and verifying the height of the bottom of the car is increased instead by the error judgment information. Therefore, the current measuring and identifying method of the concave bottom car has a certain gap from the actual application requirement. Disclosure of Invention The invention aims to solve the technical problem of providing a method and a system for measuring and identifying the concave bottom vehicles, which can accurately identify the number and the clearance height of the concave bottom vehicles in real time and match the proper position of the concave bottom vehicles. The invention is realized by the following technical scheme: a method for measuring and identifying a concave bottom car comprises the following steps: (1) Monitoring to obtain a train passing vehicle bottom height data sequence D, a vehicle bottom height data acquisition time sequence T D, a vehicle passing time sequence T P and vehicle type information; (2) The method comprises the steps of combining vehicle bottom height information, identifying the concave bottom vehicles through a waveform identification algorithm to obtain the number N of the concave bottom vehicles, a starting index I 0 [ N ] and a ending index I 1 [ N ] of each section of concave bottom vehicle data, and the clearance height h n of each section of concave bottom vehicle, (n=1, 2, the number N); (3) Acquiring the pit car front position information through a front position identification algorithm by combining the car front position information; (4) And (3) correcting the concave bottom vehicle recognition results in the steps (2) and (3) according to the vehicle type information. Further, in the method for measuring and identifying a concave bottom vehicle, in the step (2), the waveform identification algorithm is as follows: (1) Convolving the vehicle bottom height data sequence D with M filters F m to obtain M filtered waveforms D m, namely (2) For each filtered waveform D m, find the subscript J m of all D m where less than the threshold delta m; (3) Dividing each group of subscripts J m into N ' m segments, traversing the start and end subscripts of N ' m segments, and if the start subscript of the i+1th segment minus the end subscript of the i segment is less than the threshold delta 0, merging the i and i+1th segments (i=1, 2..n ' m -1) to obtain the start and end subscripts of the N m segments of data; (4) Selecting the waveform index with the most N m in m groups of filtering waveforms D m, and respectively using the waveform index as a starting index I 0 [ N ] and a ending index I 1 [ N ] of each section of concave bottom vehicle data; (5) And selecting data with subscripts from I 0 [ n ] to I 1 [ n ] from the vehicle bottom height sequence D, and calculating a minimum value as the