CN-117227798-B - Overspeed protection test method, device, equipment and medium under virtual grouping

CN117227798BCN 117227798 BCN117227798 BCN 117227798BCN-117227798-B

Abstract

The invention provides an overspeed protection test method, device, equipment and medium under virtual marshalling, relating to the technical field of rail traffic. The method comprises the steps of constructing a front vehicle running curve according to front vehicle running data, constructing a rear vehicle running curve according to rear vehicle running data, inputting the front vehicle running curve, the front vehicle overspeed protection curve, the rear vehicle running curve and the rear vehicle overspeed protection curve into an overspeed protection comparison model, and obtaining test results of overspeed protection tests under virtual grouping, wherein the running stage comprises a grouping establishment stage, a grouping running stage, a grouping entering stage and a grouping returning operation stage. The invention comprehensively verifies the overspeed protection function of the virtual marshalling train in each operation stage, improves the accuracy and reliability of the test, and further effectively improves the safety of the virtual marshalling train in the operation process.

Inventors

LENG WENJUN

Assignees

交控科技股份有限公司

Dates

Publication Date: 20260505
Application Date: 20230808

Claims (9)

1. A method for testing overspeed protection under virtual consist, comprising: acquiring front train operation data and rear train operation data of the virtual marshalling train in each operation stage; constructing a front vehicle operation curve according to the front vehicle operation data, and constructing a rear vehicle operation curve according to the rear vehicle operation data; Inputting the front vehicle operation curve, the front vehicle overspeed protection curve, the rear vehicle operation curve and the rear vehicle overspeed protection curve to an overspeed protection comparison model, and obtaining a test result of overspeed protection test under virtual grouping, which is output by the overspeed protection comparison model; The operation stages comprise a group establishment stage, a group operation stage, a group entering stage and a parking stage, a group exiting stage and a group turning-back operation stage; The running curve is determined according to the speed measured by the train at preset distances; The input of the front vehicle operation curve, the front vehicle overspeed protection curve, the rear vehicle operation curve and the rear vehicle overspeed protection curve to an overspeed protection comparison model, the acquisition of the test result of the overspeed protection test under the virtual grouping output of the overspeed protection comparison model, comprises the following steps: inputting the front vehicle running curve and the front vehicle overspeed protection curve to a first comparison module of the overspeed protection comparison model, and obtaining a front vehicle overspeed protection test result output by the first comparison module; Inputting the rear vehicle running curve and the rear vehicle overspeed protection curve to a second comparison module of the overspeed protection comparison model, and obtaining a rear vehicle overspeed protection test result output by the second comparison module; And inputting the front vehicle overspeed protection test result and the rear vehicle overspeed protection test result to a comparison output module of the overspeed protection comparison model, and obtaining the test result of the overspeed protection test under the virtual grouping output by the comparison output module.
2. The method for testing overspeed protection under virtual consist of claim 1, wherein said constructing a front vehicle operation curve from said front vehicle operation data and a rear vehicle operation curve from said rear vehicle operation data comprises: Determining each front vehicle speed measured at each preset distance according to the front vehicle running data, and constructing the front vehicle running curve according to each front vehicle speed measured at each preset distance; and determining each rear vehicle speed measured at each preset distance according to the rear vehicle running data, and constructing the rear vehicle running curve according to each rear vehicle speed measured at each preset distance.
3. The method for testing the overspeed protection under the virtual consist according to claim 1, wherein the step of obtaining the front vehicle overspeed protection test result output by the first comparison module comprises the steps of: determining a speed difference value between the speed measured by each preset distance of the front vehicle and each front vehicle speed of the speed preset by each preset distance in the overspeed protection curve of the front vehicle; Outputting a front vehicle overspeed protection test result to pass according to the first comparison module under the condition that all front vehicle speed differences are larger than a first safety margin; And under the condition that any front vehicle speed difference value is smaller than or equal to the first safety margin, the first comparison module outputs the front vehicle overspeed protection test result as not passing.
4. The method for testing the overspeed protection under the virtual consist according to claim 1, wherein the obtaining the post-vehicle overspeed protection test result output by the second comparison module comprises: determining a speed difference value between the speed measured by each preset distance of the rear vehicle and each rear vehicle speed of the speed preset by each preset distance in the overspeed protection curve of the rear vehicle; Outputting a rear vehicle overspeed protection test result to pass according to the second comparison module under the condition that all rear vehicle speed differences are larger than a second safety margin; and outputting a rear vehicle overspeed protection test result as failed according to the second comparison module under the condition that any rear vehicle speed difference value is smaller than or equal to the second safety margin.
5. The method for testing the overspeed protection under the virtual consist according to claim 1, wherein the step of obtaining the test result of the overspeed protection under the virtual consist output by the comparison output module comprises the following steps: Outputting a test result of the overspeed protection test under the virtual grouping according to the comparison output module to pass under the condition that the overspeed protection test result of the front vehicle passes and the overspeed protection test result of the rear vehicle passes; otherwise, outputting a test result of the overspeed protection test under the virtual grouping according to the comparison output module to be failed.
6. The method of claim 5, further comprising, after outputting the test result of the virtual under-consist overspeed protection test according to the comparison output module as not passing: adjusting control parameters of the overspeed protection system under the virtual marshalling; Acquiring front car operation data and rear car operation data of the virtual marshalling train in each operation stage so as to output test results of overspeed protection test under the virtual marshalling again; Outputting the test result of the overspeed protection test under the virtual marshalling to pass; the control parameters of the overspeed protection system under the virtual marshalling at least comprise the braking force of the front vehicle under the virtual marshalling and the braking force of the rear vehicle under the virtual marshalling.
7. An overspeed protection testing apparatus under a virtual consist, comprising: The acquisition unit is used for acquiring front train operation data and rear train operation data of the virtual marshalling train in each operation stage; The construction unit is used for constructing a front vehicle operation curve according to the front vehicle operation data and constructing a rear vehicle operation curve according to the rear vehicle operation data; The input unit is used for inputting the front vehicle operation curve, the front vehicle overspeed protection curve, the rear vehicle operation curve and the rear vehicle overspeed protection curve to an overspeed protection comparison model, and obtaining a test result of an overspeed protection test under a virtual grouping, which is output by the overspeed protection comparison model; The operation stages comprise a group establishment stage, a group operation stage, a group entering stage and a parking stage, a group exiting stage and a group turning-back operation stage; The running curve is determined according to the speed measured by the train at preset distances; the input unit is specifically configured to: inputting the front vehicle running curve and the front vehicle overspeed protection curve to a first comparison module of the overspeed protection comparison model, and obtaining a front vehicle overspeed protection test result output by the first comparison module; Inputting the rear vehicle running curve and the rear vehicle overspeed protection curve to a second comparison module of the overspeed protection comparison model, and obtaining a rear vehicle overspeed protection test result output by the second comparison module; And inputting the front vehicle overspeed protection test result and the rear vehicle overspeed protection test result to a comparison output module of the overspeed protection comparison model, and obtaining the test result of the overspeed protection test under the virtual grouping output by the comparison output module.
8. An electronic device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, wherein the processor implements the virtual under consist overspeed protection test method of any one of claims 1-6 when the program is executed.
9. A non-transitory computer readable storage medium having stored thereon a computer program, which when executed by a processor implements the virtual consist overspeed protection test method of any one of claims 1-6.

Description

Overspeed protection test method, device, equipment and medium under virtual grouping Technical Field The invention relates to the technical field of rail transit, in particular to an overspeed protection test method, device, equipment and medium under virtual marshalling. Background The invention patent with the grant bulletin number of CN103552555B discloses a method for train overspeed protection and braking distance, an accurate and complete out-of-control acceleration braking curve is obtained through calculation, the least adverse condition of out-of-control acceleration is fully considered, accurate guarantee is provided for train running speed safety and safety interval, the invention patent with the grant bulletin number of CN112265569B discloses a variable combined engineering vehicle running safety protection method based on signal system protection, an engineering vehicle-mounted CC uses a maximum engineering vehicle marshalling combination length value to assist in ensuring train overspeed protection safety, an engineering vehicle-mounted CC uses a minimum engineering vehicle marshalling combination length value to assist in supervising and protecting engineering vehicle safety positioning state, safety protection on marshalling combination running of engineering vehicles with different lengths is achieved, the safety protection problem of variable combined engineering vehicle running under signal system protection is effectively solved, and effective verification test on overspeed protection functions under virtual marshalling cannot be carried out. The prior test technology is mainly too dependent on laboratory simulation and emulation, can be influenced by a simulation model and parameter setting, has certain deviation on test results, and can cause potential threat to safety in the overspeed problem of the marshalling train in the running process of the virtual marshalling train. Disclosure of Invention The invention provides a method, a device, equipment and a medium for testing overspeed protection under virtual marshalling, which are used for solving the technical defect that the overspeed protection function under virtual marshalling cannot be comprehensively tested and verified at present, and further the driving safety of a train under virtual marshalling cannot be ensured. In a first aspect, the present invention provides a method for testing overspeed protection under virtual consist, including: acquiring front train operation data and rear train operation data of the virtual marshalling train in each operation stage; constructing a front vehicle operation curve according to the front vehicle operation data, and constructing a rear vehicle operation curve according to the rear vehicle operation data; Inputting the front vehicle operation curve, the front vehicle overspeed protection curve, the rear vehicle operation curve and the rear vehicle overspeed protection curve to an overspeed protection comparison model, and obtaining a test result of overspeed protection test under virtual grouping, which is output by the overspeed protection comparison model; The operation stages comprise a group establishment stage, a group operation stage, a group entering stage and a parking stage, a group exiting stage and a group turning-back operation stage; The operating curve is determined from the speed measured at each preset distance of the train. According to the virtual marshalling overspeed protection test method provided by the invention, a front car running curve is constructed according to the front car running data, and a rear car running curve is constructed according to the rear car running data, and the method comprises the following steps: Determining each front vehicle speed measured at each preset distance according to the front vehicle running data, and constructing the front vehicle running curve according to each front vehicle speed measured at each preset distance; and determining each rear vehicle speed measured at each preset distance according to the rear vehicle running data, and constructing the rear vehicle running curve according to each rear vehicle speed measured at each preset distance. According to the method for testing overspeed protection under virtual consist provided by the invention, the steps of inputting the front vehicle operation curve, the front vehicle overspeed protection curve, the rear vehicle operation curve and the rear vehicle overspeed protection curve into the overspeed protection comparison model, obtaining the test result of the overspeed protection test under virtual consist output by the overspeed protection comparison model include: inputting the front vehicle running curve and the front vehicle overspeed protection curve to a first comparison module of the overspeed protection comparison model, and obtaining a front vehicle overspeed protection test result output by the first comparison module; Inputting the rear vehicle running curve and th