Rail transit vehicle braking control method and device

Abstract

The invention provides a rail transit vehicle braking control method and device, which can be used in the technical field of rail transit, and the method comprises the following steps: determining the pre-stored position information of a vehicle and the distance information of a destination from the obtained route information of the rail transit vehicle; generating ramp information of a destination by using the pre-stored position information, the distance information and the route information; and the brake cylinder pressure needed by the vehicle is generated according to the ramp information and the obtained pre-control deceleration. According to the rail transit vehicle braking control method and device provided by the invention, the accuracy of autonomous positioning of the vehicle is enhanced, and the stability and safety of vehicle braking control are improved.

Description

Technical Field

[0001] This application relates to the technical field of rail transit, and particularly to a braking control method and device for rail transit vehicles. Background Art

[0002] During the operation of existing vehicles, the braking process is completely controlled by signals, and the vehicle performs conventional braking according to the signal instructions. However, in actual operation, the braking system cannot identify the position information and ramp information of the vehicle, but conducts braking control based on the deceleration and braking distance designed for a straight line. Therefore, overshoot or undershoot often occurs when the vehicle stops. The braking system strictly executes braking according to the signal instructions. During the commissioning stage, in order to ensure accurate vehicle parking alignment, it is often necessary to repeatedly adjust and test the vehicle route map, consuming a large amount of time and effort. Even after multiple commissioning, the situation of inaccurate alignment when entering the station may still occur on some lines after formal operation.

[0003] In addition, during the type test stage of the vehicle, since the braking system cannot identify the position information and ramp conditions of the line, the measured braking distance and deceleration data in the test will be affected by the ramp, resulting in some data being inconsistent with the standard or even showing unqualified. Currently, usually through the DIN 13451-2 standard, the ramp information is incorporated into the calculation to determine whether the braking distance and deceleration meet the standards. This method delays the timeliness of the data and increases the repeated adjustment and time consumption during the experiment. Summary of the Invention

[0004] In view of the problems in the prior art, the embodiments of this application provide a braking control method and device for rail transit vehicles, which can at least partially solve the problems existing in the prior art.

[0005] In a first aspect, this application provides a braking control method for rail transit vehicles, including:

[0006] Determine the pre-stored position information of the vehicle and the distance information to the destination from the obtained line information of the rail transit vehicle;

[0007] Generate the ramp information of the destination by using the pre-stored position information, the distance information, and the line information;

[0008] Generate the required brake cylinder pressure of the vehicle according to the ramp information and the obtained pre-control deceleration.

[0009] Further, the generating the ramp information of the destination by using the pre-stored position information, the distance information, and the line information includes:

[0010] Generate the position information of the destination by using the pre-stored position information and the distance information;

[0011] Determine the ramp information of the destination from the line information according to the location information of the destination.

[0012] Further, the generating the brake cylinder pressure required for the vehicle according to the ramp information and the obtained pre-control deceleration includes:

[0013] Calculate the braking force required for the vehicle by using the ramp information and the obtained pre-control deceleration;

[0014] Generate the brake cylinder pressure according to the braking force.

[0015] Further, the calculating the braking force required for the vehicle by using the ramp information and the obtained pre-control deceleration includes:

[0016] If it is determined according to the ramp information that there is no ramp at the destination, calculate the braking force by using the pre-control deceleration;

[0017] If it is determined according to the ramp information that there is a ramp at the destination, calculate the braking force by using the pre-control deceleration and the ramp information; the ramp information includes the ramp direction and the slope value.

[0018] Further, before determining the pre-stored position information of the vehicle and the distance information of the destination from the obtained line information of the rail transit vehicle, it further includes:

[0019] Obtain the line information of the rail transit vehicle and the real-time position information of the vehicle;

[0020] When the difference between the real-time position information and the pre-stored position information of the vehicle in the line information exceeds a preset threshold, update the pre-stored position information to the real-time position information.

[0021] In a second aspect, the present application provides a brake control device for a rail transit vehicle, including:

[0022] An information determination unit, configured to determine the pre-stored position information of the vehicle and the distance information of the destination from the obtained line information of the rail transit vehicle;

[0023] A ramp information generation unit, configured to generate the ramp information of the destination by using the pre-stored position information, the distance information and the line information;

[0024] A brake cylinder pressure generation unit, configured to generate the brake cylinder pressure required for the vehicle according to the ramp information and the obtained pre-control deceleration.

[0025] Further, the ramp information generation unit includes:

[0026] A location information generation module, configured to generate the location information of the destination by using the pre-stored location information and the distance information;

[0027] A ramp information confirmation module, configured to determine the ramp information of the destination from the line information according to the location information of the destination.

[0028] Further, the brake cylinder pressure generation unit includes;

[0029] A braking force calculation module, configured to calculate the braking force required by the vehicle by using the ramp information and the obtained pre-controlled deceleration;

[0030] A brake cylinder pressure generation module, configured to generate the brake cylinder pressure according to the braking force.

[0031] Further, the braking force calculation module includes;

[0032] A first braking force calculation sub-module, configured to calculate the braking force by using the pre-controlled deceleration if it is determined according to the ramp information that there is no ramp at the destination;

[0033] A second braking force calculation sub-module, configured to calculate the braking force by using the pre-controlled deceleration and the ramp information if it is determined according to the ramp information that there is a ramp at the destination; the ramp information includes the ramp direction and the slope value.

[0034] Further, it further includes;

[0035] An information acquisition unit, configured to acquire the line information of the rail transit vehicle and the real-time location information of the vehicle;

[0036] An information update unit, configured to update the pre-stored location information to the real-time location information when the difference between the real-time location information and the pre-stored location information of the vehicle in the line information exceeds a preset threshold.

[0037] In a third aspect, the present application provides a computer device, including a memory, a processor, and a computer program stored on the memory and executable on the processor, where when the processor executes the computer program, the method described in any one of the above embodiments is implemented.

[0038] In a fourth aspect, the present application provides a computer-readable storage medium, where the computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the method described in any one of the above embodiments is implemented.

[0039] In a fifth aspect, the present application provides a computer program product, where the computer program product includes a computer program, and when the computer program is executed by a processor, the method described in any one of the above embodiments is implemented.

[0040] The rail transit vehicle braking control method and device provided by the present application determine the pre-stored position information of the vehicle and the distance information to the destination from the obtained line information of the rail transit vehicle; generate the ramp information of the destination by using the pre-stored position information, the distance information and the line information; generate the braking cylinder pressure required by the vehicle according to the ramp information and the obtained pre-control deceleration, which realizes the enhancement of the accuracy of vehicle autonomous positioning and improves the stability and safety of vehicle braking control. Among them, by using the pre-stored position information, the distance information and the line information to generate the ramp information of the destination, the dependence on signal control can be reduced; by generating the braking cylinder pressure required by the vehicle according to the ramp information and the obtained pre-control deceleration, the braking distance in harsh environments can be effectively shortened, ensuring the safe operation of the vehicle. Description of the Drawings

[0041] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required to be used in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0042] Figure 1 is a schematic flowchart of a rail transit vehicle braking control method provided by an embodiment of the present application;

[0043] Figure 2 is a schematic flowchart of a rail transit vehicle braking control method provided by an embodiment of the present application;

[0044] Figure 3 is a schematic flowchart of a rail transit vehicle braking control method provided by an embodiment of the present application;

[0045] Figure 4 is a schematic flowchart of a rail transit vehicle braking control method provided by an embodiment of the present application;

[0046] Figure 5 is a schematic flowchart of a rail transit vehicle braking control method provided by an embodiment of the present application;

[0047] Figure 6 is a schematic structural diagram of a rail transit vehicle braking control device provided by an embodiment of the present application;

[0048] Figure 7 is a schematic structural diagram of a rail transit vehicle braking control device provided by an embodiment of the present application;

[0049] Figure 8 is a schematic structural diagram of a rail transit vehicle braking control device provided by an embodiment of the present application;

[0050] Figure 9 is a schematic structural diagram of a braking control device for a rail transit vehicle provided by an embodiment of the present application;

[0051] Figure 10 is a schematic structural diagram of a braking control device for a rail transit vehicle provided by an embodiment of the present application;

[0052] Figure 11 is a schematic physical structure diagram of an electronic device provided by an embodiment of the present application. Detailed implementation manners

[0053] To make the objectives, technical solutions, and advantages of the embodiments of the present application clearer and more understandable, the following further describes the embodiments of the present application in detail with reference to the accompanying drawings. Here, the illustrative embodiments of the present application and their descriptions are used to explain the present application, but not to limit the present application. It should be noted that, without conflict, the embodiments in the present application and the features in the embodiments can be arbitrarily combined with each other.

[0054] The following takes a server as the execution subject as an example to illustrate the specific implementation process of the rail transit vehicle braking control method provided by the embodiments of the present application.

[0055] Figure 1 is a flowchart of a rail transit vehicle braking control method provided by an embodiment of the present application. As Figure 1 shown, the rail transit vehicle braking control method provided by the present application includes:

[0056] S101: Determine the pre-stored position information of the vehicle and the distance information to the destination from the obtained line information of the rail transit vehicle;

[0057] S102: Generate the ramp information to the destination by using the pre-stored position information, the distance information, and the line information;

[0058] S103: Generate the braking cylinder pressure required for the vehicle according to the ramp information and the obtained pre-control deceleration.

[0059] From Figure 1 the shown process, it can be seen that for the rail transit vehicle braking control method provided by the present application, by determining the pre-stored position information of the vehicle and the distance information to the destination from the obtained line information of the rail transit vehicle; generating the ramp information to the destination by using the pre-stored position information, the distance information, and the line information; generating the braking cylinder pressure required for the vehicle according to the ramp information and the obtained pre-control deceleration, the accuracy of the vehicle's autonomous positioning is enhanced, and the stability and safety of the vehicle's braking control are improved.

[0060] The following explains each step in detail.

[0061] S101: Determine the pre-stored position information of the vehicle and the distance information to the destination from the obtained line information of the rail transit vehicle;

[0062] Specifically, the server pre-obtains and stores the complete line information of the rail transit vehicle, which includes ramp information, the position information and distance information of each station. During the line operation, when the vehicle arrives at the current station, the server extracts the pre-stored position information of the current station from the pre-stored line information, and based on this, obtains the corresponding distance information to the destination according to the pre-stored position information, so as to further determine the ramp information of the destination, providing key data support for subsequent braking, thereby ensuring the smoothness and safety of the train. By obtaining and processing the above information in advance, the server can optimize the braking strategy according to different line conditions, improving the overall operation efficiency and reliability of the vehicle.

[0063] In one embodiment, when an emergency brake occurs, the server determines the ramp information of the emergency brake position according to the pre-stored position information and the distance traveled by the vehicle, where the distance traveled by the vehicle is calculated based on the number of wheel rotations.

[0064] In one embodiment, the line information of the rail transit vehicle is obtained according to the coordinate information in the construction route map of the line. As the standard route of the rail transit vehicle, it includes the coordinate information of the starting station as the zero point.

[0065] S102: Generate the ramp information of the destination by using the pre-stored position information, the distance information and the line information;

[0066] Specifically, after the server determines the pre-stored position information of the vehicle and the distance information to the destination from the line information, it further analyzes and processes the above information. First, the server generates the ramp information corresponding to the destination in the line information through the pre-stored position information and the distance information to the destination, so as to calculate the brake cylinder pressure required for the vehicle when arriving at the destination, estimating the braking demand of the vehicle when entering the next section, and ensuring that the train can achieve safe and smooth deceleration and stop under complex terrain conditions.

[0067] Figure 2 is a schematic flowchart of a rail transit vehicle braking control method provided by an embodiment of the present application. As Figure 2 shown, S102 includes:

[0068] S201: Generate the position information of the destination by using the pre-stored position information and the distance information;

[0069] Specifically, in order to generate the ramp information of the destination, the server needs to perform precise calculations by comprehensively using the pre-stored location information, the distance information of the destination, and the pre-stored route information. First, the server combines the current pre-stored location information of the vehicle and the distance information of the destination, and obtains the accurate location information of the destination by calculating the sum of the current pre-stored location information of the vehicle and the distance information of the destination.

[0070] S202: Determine the ramp information of the destination from the route information according to the location information of the destination.

[0071] Specifically, after the server locates the destination through calculation and obtains its accurate location information, it further extracts the ramp information corresponding to the destination location from the pre-stored route information. The ramp information includes three key parameters: ramp label, ramp direction, and slope value.

[0072] First, the ramp label is used to identify whether the specific location where the destination is located contains a ramp. If the ramp label is positive, it indicates that there is a ramp at the destination or its adjacent section; otherwise, it means that the area is flat and there is no ramp. Next, the ramp direction details the inclination characteristics of the ramp, that is, whether the ramp is uphill or downhill, which is particularly crucial for formulating the train braking or acceleration strategy. Finally, the slope value represents the specific angle or slope of the ramp, and the server uses this value to quantify the steepness of the ramp, thereby providing a more accurate basis for the train's braking or energy consumption management.

[0073] In one embodiment, when the ramp direction is uphill, the server needs to adjust the acceleration parameters of the train to overcome the slope, while when the ramp direction is downhill, more precise braking control is required to prevent excessive speed increase.

[0074] In one embodiment, by analyzing the detailed ramp data, the server can formulate corresponding control strategies for the next operation of the train, such as adjusting the brake cylinder pressure or acceleration force, to ensure that the vehicle can smoothly and safely handle different ramp conditions. The server ensures accuracy and response speed under complex terrain conditions through efficient parsing of the route information.

[0075] S103: Generate the brake cylinder pressure required for the vehicle according to the ramp information and the obtained pre-controlled deceleration.

[0076] Specifically, based on the ramp information of the destination and the obtained pre-control deceleration data, the server calculates the brake cylinder pressure required for the vehicle to reach the destination to perform vehicle braking control. The pre-control deceleration is the deceleration of the vehicle when braking on a straight road. The ramp information provides the ramp label, ramp direction, and slope value of the road section where the vehicle needs to brake. The server obtains the additional braking force required for the vehicle to travel on the ramp based on the ramp label, ramp direction, and slope value, while the pre-control deceleration is based on the deceleration parameters when the vehicle brakes on a flat road surface. Through the comprehensive calculation of these two elements, the server can generate a brake cylinder pressure value that conforms to the actual situation, thereby effectively controlling the deceleration and stopping of the vehicle and ensuring driving safety and stability.

[0077] Figure 3 is a schematic flow chart of a braking control method for a rail transit vehicle provided by an embodiment of the present application. As Figure 3 shown, S103 includes:

[0078] S301: Calculate the braking force required for the vehicle using the ramp information and the obtained pre-control deceleration;

[0079] Specifically, the server accurately calculates the braking force required for the vehicle to stop at the destination using the processed ramp information of the destination and the obtained pre-control deceleration. The ramp information includes the ramp label, ramp direction, and slope value, which can reflect the additional resistance or acceleration that may exist when the vehicle is about to reach the destination. The pre-control deceleration represents the standard deceleration value when the vehicle normally brakes on a straight road.

[0080] The server determines whether to increase or decrease the braking force based on the inclination angle and direction of the ramp. By integrating the ramp information and the pre-control deceleration, the server can calculate the accurate braking force requirement to ensure that the vehicle can stop at the destination safely and smoothly.

[0081] Figure 4 is a schematic flow chart of a braking control method for a rail transit vehicle provided by an embodiment of the present application. As Figure 4 shown, S301 includes:

[0082] S401: If it is determined according to the ramp information that there is no ramp at the destination, calculate the braking force using the pre-control deceleration;

[0083] Specifically, if the ramp label at the destination is no ramp, the braking force F calculated using the pre-control deceleration is expressed as:

[0084] F = ma (1)

[0085] In the formula, m is the current load of the vehicle, and a is the pre-control deceleration.

[0086] S402: If it is determined according to the ramp information that there is a ramp at the destination, calculate the braking force by using the pre-controlled deceleration and the ramp information; the ramp information includes the ramp direction and the slope value.

[0087] Specifically, if the ramp label at the destination is that there is a ramp and the ramp direction is uphill, the braking force F′ calculated by using the pre-controlled deceleration and the slope value is expressed as:

[0088] F′ = ma - mg * sin(arctan(i)) (2)

[0089] In the formula, m is the current load of the vehicle, a is the pre-controlled deceleration, i is the slope value of the target coordinate position, and sin(arctan(i)) is the downward sliding force generated by the ramp.

[0090] If the ramp label at the destination is that there is a ramp and the ramp direction is downhill, the braking force F″ calculated by using the pre-controlled deceleration and the slope value is expressed as:

[0091] F″ = ma + mg * sin(arctan(i)) (3)

[0092] In the formula, m is the current load of the vehicle, a is the pre-controlled deceleration, i is the slope value of the target coordinate position, and sin(arctan(i)) is the downward sliding force generated by the ramp.

[0093] S302: Generate the brake cylinder pressure according to the braking force.

[0094] Specifically, after the server calculates the required braking force, it further generates the corresponding brake cylinder pressure. The brake cylinder pressure directly affects the response speed of the braking system and the magnitude of the braking force. The server adjusts the pressure of the brake cylinder according to the calculated braking force requirement to ensure that the braking force can meet the actual needs, thereby ensuring the safe braking and smooth parking of the vehicle under different road conditions.

[0095] In one embodiment, the brake cylinder pressure P required for the vehicle calculated according to the braking force is expressed as:

[0096]

[0097] In the formula, F is the braking force, A is the area of the brake piston, and d is the diameter of the brake piston.

[0098] In one embodiment, after obtaining the control deceleration considering the ramp information, the server can further calculate the braking distance of the vehicle.

[0099] Figure 5 It is a schematic flow chart of the braking control method for rail transit vehicles provided by an embodiment of the present application, as Figure 5As shown, before determining the pre-stored position information of the vehicle and the distance information to the destination from the obtained line information of the rail transit vehicle, the rail transit vehicle braking control method provided by the present application further includes:

[0100] S501: Obtain the line information of the rail transit vehicle and the real-time position information of the vehicle;

[0101] Specifically, the server obtains the line information of the rail transit vehicle and the current real-time position information of the vehicle. The line information includes data such as ramp information, the position information and distance information of each station.

[0102] In one embodiment, the real-time position information reflects the current position of the vehicle, which can be collected in real time through the vehicle's positioning system, or calculated based on the position information of the previous stop and the distance traveled by the vehicle. Among them, the distance traveled by the vehicle is calculated based on the number of wheel rotations.

[0103] S502: When the difference between the real-time position information and the pre-stored position information of the vehicle in the line information exceeds a preset threshold, update the pre-stored position information to the real-time position information.

[0104] Specifically, when the server detects that there is an inconsistency between the obtained real-time position information and the pre-stored position information in the line information, the server determines whether the difference between the real-time position information and the pre-stored position information of the vehicle in the line information exceeds a preset threshold. If the difference between the real-time position information and the pre-stored position information exceeds the preset threshold, the server will automatically start the update program. At this time, the collected real-time position information is used to correct and update the line information to ensure that the pre-stored position information in the line information is consistent with the actual real-time position of the vehicle. The above dynamic update mechanism can not only improve the accuracy of vehicle braking, but also timely reflect the latest information when the track line or station position changes, avoiding dispatching errors or potential train operation safety hazards caused by position deviation.

[0105] In one embodiment, the vehicle uses the information of the first station after leaving the depot as the zero calibration point. When the vehicle arrives at the first station in the running direction, the server performs the first calibration of the line according to the stored distance information to the destination. At the same time, each subsequent station has to be checked against the station positions stored in the server. When it is found that the difference exceeds a certain value, the server uses the actual position station and distance information as the subsequent distance reference point, which can avoid the continuous accumulation of distance errors and provide a more powerful guarantee for the correctness of subsequent ramp braking.

[0106] The present application provides a braking control method for rail transit vehicles. The method includes determining the pre-stored position information of the vehicle and the distance information to the destination from the obtained line information of the rail transit vehicle; generating the ramp information of the destination by using the pre-stored position information, the distance information and the line information; and generating the braking cylinder pressure required for the vehicle according to the ramp information and the obtained pre-control deceleration, thereby enhancing the accuracy of vehicle autonomous positioning and improving the stability and safety of vehicle braking control. Among them, by using the pre-stored position information, the distance information and the line information to generate the ramp information of the destination, the dependence on signal control can be reduced; by generating the braking cylinder pressure required for the vehicle according to the ramp information and the obtained pre-control deceleration, the braking distance in harsh environments can be effectively shortened to ensure the safe operation of the vehicle.

[0107] Based on the same inventive concept, an embodiment of the present application further provides a braking control device for rail transit vehicles, which can be used to implement the method described in the above embodiment, as described in the following embodiment. Since the principle of solving problems by the braking control device for rail transit vehicles is similar to that of the braking control method for rail transit vehicles, the implementation of the braking control device for rail transit vehicles can refer to the implementation of the method for determining software performance benchmarks, and the repeated parts will not be described again. As used hereinafter, the term "unit" or "module" can be a combination of software and / or hardware that can implement a predetermined function. Although the systems described in the following embodiments are preferably implemented in software, implementation in hardware, or a combination of software and hardware is also possible and contemplated.

[0108] Figure 6 is a schematic structural diagram of a braking control device for rail transit vehicles provided by an embodiment of the present application, as Figure 6 shown. The device includes:

[0109] An information determination unit 601, configured to determine the pre-stored position information of the vehicle and the distance information to the destination from the obtained line information of the rail transit vehicle;

[0110] Specifically, the information determination unit 601 pre-obtains and stores the complete line information of the rail transit vehicle, and this information includes ramp information, the position information of each station, and distance information. During the line operation, when the vehicle arrives at the current station, the information determination unit 601 extracts the pre-stored position information of the current station from the pre-stored line information, and based on this, obtains the corresponding distance information to the destination according to the pre-stored position information, so as to further determine the ramp information of the destination, providing key data support for subsequent braking, thereby ensuring the smoothness and safety of the train. By pre-obtaining and processing the above information, the server can optimize the braking strategy according to different line conditions, improving the overall operation efficiency and reliability of the vehicle.

[0111] The ramp information generation unit 602 is configured to generate ramp information of the destination by using the pre-stored position information, the distance information, and the line information;

[0112] Specifically, after the information determination unit 601 of the server determines the pre-stored position information of the vehicle and the distance information of the destination from the line information, the ramp information generation unit 602 further analyzes and processes the above information. First, the ramp information generation unit 602 generates the ramp information corresponding to the destination in the line information through the pre-stored position information and the distance information of the destination, so as to calculate the brake cylinder pressure required for the vehicle when arriving at the destination, estimate the braking demand of the vehicle when entering the next section, and ensure that the train can achieve safe and stable deceleration and stop under complex terrain conditions.

[0113] The brake cylinder pressure generation unit 603 is configured to generate the brake cylinder pressure required for the vehicle according to the ramp information and the obtained pre-controlled deceleration.

[0114] Specifically, the brake cylinder pressure generation unit 603 calculates the brake cylinder pressure required for the vehicle to reach the destination according to the ramp information of the destination in combination with the obtained pre-controlled deceleration data for vehicle braking control. The pre-controlled deceleration is the deceleration of the vehicle when braking on a straight track. The ramp information provides the ramp label, ramp direction, and slope value of the section where the vehicle needs to brake. The brake cylinder pressure generation unit 603 obtains the additional braking force required for the vehicle when driving on the ramp according to the ramp label, ramp direction, and slope value, while the pre-controlled deceleration is based on the deceleration parameter when the vehicle brakes on a flat road surface. Through the comprehensive calculation of these two elements, the server can generate a brake cylinder pressure value that conforms to the actual situation, thereby effectively controlling the deceleration and stop of the vehicle and ensuring the safety and stability of train operation.

[0115] Figure 7 is a schematic structural diagram of a rail transit vehicle braking control device provided by an embodiment of the present application. On the basis of the Figure 6 embodiment, further, as Figure 7 shown, the rail transit vehicle braking control device provided by the present application further includes:

[0116] The position information generation module 701 is configured to generate the position information of the destination by using the pre-stored position information and the distance information;

[0117] The ramp information confirmation module 702 is configured to determine the ramp information of the destination from the line information according to the position information of the destination.

[0118] Figure 8 is a schematic structural diagram of a rail transit vehicle braking control device provided by an embodiment of the present application. On the basis of the Figure 6 embodiment, further, asFigure 8 As shown, the braking control device for rail transit vehicles provided by the present application further includes:

[0119] A braking force calculation module 801, configured to calculate the braking force required for the vehicle by using the ramp information and the obtained pre-control deceleration;

[0120] A brake cylinder pressure generation module 802, configured to generate the brake cylinder pressure according to the braking force.

[0121] Figure 9 is a schematic structural diagram of a braking control device for rail transit vehicles provided by an embodiment of the present application. On the basis of the Figure 8 embodiment, further, as Figure 9 shown, the braking control device for rail transit vehicles provided by the present application further includes:

[0122] A first braking force calculation sub-module 901, configured to calculate the braking force by using the pre-control deceleration if it is determined according to the ramp information that there is no ramp at the destination;

[0123] A second braking force calculation sub-module 902, configured to calculate the braking force by using the pre-control deceleration and the ramp information if it is determined according to the ramp information that there is a ramp at the destination; the ramp information includes the ramp direction and the slope value.

[0124] Figure 10 is a schematic structural diagram of a braking control device for rail transit vehicles provided by an embodiment of the present application. On the basis of the Figure 6 embodiment, further, as Figure 10 shown, the braking control device for rail transit vehicles provided by the present application further includes:

[0125] An information acquisition unit 1001, configured to acquire the line information of the rail transit vehicle and the real-time position information of the vehicle;

[0126] An information update unit 1002, configured to update the pre-stored position information to the real-time position information when the difference between the real-time position information and the pre-stored position information of the vehicle in the line information exceeds a preset threshold.

[0127] The present application provides a braking control method and device for rail transit vehicles. By determining the pre-stored position information of the vehicle and the distance information to the destination from the obtained line information of the rail transit vehicle; generating the ramp information of the destination by using the pre-stored position information, the distance information and the line information; and generating the braking cylinder pressure required by the vehicle according to the ramp information and the obtained pre-control deceleration, the accuracy of the vehicle's autonomous positioning is enhanced, and the stability and safety of the vehicle's braking control are improved. Among them, by using the pre-stored position information, the distance information and the line information to generate the ramp information of the destination, the dependence on signal control can be reduced; by generating the braking cylinder pressure required by the vehicle according to the ramp information and the obtained pre-control deceleration, the braking distance in harsh environments can be effectively shortened, ensuring the safe operation of the vehicle.

[0128] Figure 11 is a schematic physical structure diagram of an electronic device provided by an embodiment of the present application, as Figure 11 shown, the electronic device may include: a processor 1101, a communication interface 1102, a memory 1103, and a communication bus 1104. Among them, the processor 1101, the communication interface 1102, and the memory 1103 complete mutual communication through the communication bus 1104. The processor 1101 can call the logical instructions in the memory 1103 to execute the following method: determining the pre-stored position information of the vehicle and the distance information to the destination from the obtained line information of the rail transit vehicle; generating the ramp information of the destination by using the pre-stored position information, the distance information and the line information; and generating the braking cylinder pressure required by the vehicle according to the ramp information and the obtained pre-control deceleration.

[0129] In addition, when the logical instructions in the above-mentioned memory 1103 can be implemented in the form of software function units and sold or used as an independent product, they can be stored in a computer-readable storage medium. Based on such an understanding, the technical solution of the present application, in essence, or the part that contributes to the prior art, or a part of this technical solution, can be embodied in the form of a software product. The computer software product is stored in a storage medium and includes several instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the methods described in various embodiments of the present application. The foregoing storage medium includes: various media such as a USB flash drive, a mobile hard disk, a read-only memory (ROM, Read-Only Memory), a random access memory (RAM, Random Access Memory), a magnetic disk, or an optical disc that can store program codes.

[0130] This embodiment discloses a computer program product, which includes a computer program stored on a computer-readable storage medium. The computer program includes program instructions. When the program instructions are executed by a computer, the computer can execute the methods provided in the above method embodiments, for example, including: determining the pre-stored position information of the vehicle and the distance information to the destination from the obtained line information of the rail transit vehicle; generating the ramp information of the destination by using the pre-stored position information, the distance information, and the line information; and generating the required brake cylinder pressure of the vehicle according to the ramp information and the obtained pre-controlled deceleration.

[0131] This embodiment provides a computer-readable storage medium, which stores a computer program that enables the computer to execute the methods provided in the above method embodiments, for example, including: determining the pre-stored position information of the vehicle and the distance information to the destination from the obtained line information of the rail transit vehicle; generating the ramp information of the destination by using the pre-stored position information, the distance information, and the line information; and generating the required brake cylinder pressure of the vehicle according to the ramp information and the obtained pre-controlled deceleration.

[0132] Those skilled in the art should understand that the embodiments of the present application can be provided as methods, systems, or computer program products. Therefore, the present application can take the form of a complete hardware embodiment, a complete software embodiment, or an embodiment combining software and hardware aspects. Moreover, the present application can take the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) that contain computer-usable program code.

[0133] The present application is described with reference to the flowcharts and / or block diagrams of methods, devices (systems), and computer program products according to the embodiments of the present application. It should be understood that each flow and / or block in the flowchart and / or block diagram can be implemented by computer program instructions, and the combination of the flows and / or blocks in the flowchart and / or block diagram can also be implemented by computer program instructions. These computer program instructions can be provided to the processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing devices to generate a machine, so that the instructions executed by the processor of the computer or other programmable data processing devices generate a device for realizing the specified functions in Figure 1 one flow or multiple flows and / or blocks Figure 1 one block or multiple blocks.

[0134] These computer program instructions can also be stored in a computer-readable memory that can direct a computer or other programmable data processing device to work in a specific manner, so that the instructions stored in the computer-readable memory generate a manufactured article including an instruction device, and the instruction device realizes the function in the processFigure 1 one process or multiple processes and / or blocks Figure 1 the functions specified in one block or multiple blocks.

[0135] These computer program instructions can also be loaded onto a computer or other programmable data processing device, so that a series of operation steps are executed on the computer or other programmable device to generate a computer-implemented process. Thus, the instructions executed on the computer or other programmable device provide steps for implementing the functions specified in one process Figure 1 one process or multiple processes and / or blocks Figure 1 or multiple processes and / or the functions specified in one block or multiple blocks.

[0136] In the description of this specification, the descriptions with reference to the terms "one embodiment", "a specific embodiment", "some embodiments", "for example", "example", "specific example", or "some examples", etc. mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of this application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0137] The specific embodiments described above further elaborate on the purpose, technical solutions, and beneficial effects of this application. It should be understood that the above are only specific embodiments of this application and are not used to limit the protection scope of this application. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of this application shall be included in the protection scope of this application.

Claims

1. A braking control method for rail transit vehicles, characterized in that, Including: Determine the pre-stored position information of the vehicle and the distance information to the destination from the obtained line information of the rail transit vehicle; Generate the ramp information to the destination by using the pre-stored position information, the distance information and the line information; Generate the brake cylinder pressure required for the vehicle according to the ramp information and the obtained pre-control deceleration.

2. The braking control method for rail transit vehicles according to claim 1, characterized in that, The generating the ramp information to the destination by using the pre-stored position information, the distance information and the line information includes; Generate the position information of the destination by using the pre-stored position information and the distance information; Determine the ramp information of the destination from the line information according to the position information of the destination.

3. The braking control method for rail transit vehicles according to claim 1, characterized in that, The generating the brake cylinder pressure required for the vehicle according to the ramp information and the obtained pre-control deceleration includes; Calculate the braking force required for the vehicle by using the ramp information and the obtained pre-control deceleration; Generate the brake cylinder pressure according to the braking force.

4. The braking control method for rail transit vehicles according to claim 3, characterized in that, The calculating the braking force required for the vehicle by using the ramp information and the obtained pre-control deceleration includes; If it is determined according to the ramp information that there is no ramp at the destination, calculate the braking force by using the pre-control deceleration; If it is determined according to the ramp information that there is a ramp at the destination, calculate the braking force by using the pre-control deceleration and the ramp information; the ramp information includes the ramp direction and the slope value.

5. The braking control method for rail transit vehicles according to claim 1, characterized in that, Before determining the pre-stored position information and the distance information to the destination from the obtained line information of the rail transit vehicle, it further includes; Obtain the line information of the rail transit vehicle and the real-time position information of the vehicle; When the difference between the real-time position information and the pre-stored position information of the vehicle in the line information exceeds a preset threshold, update the pre-stored position information to the real-time position information.

6. A braking control device for a rail transit vehicle, characterized in that, Including: An information determination unit for determining the pre-stored position information of the vehicle and the distance information to the destination from the obtained line information of the rail transit vehicle; A ramp information generation unit for generating the ramp information to the destination by using the pre-stored position information, the distance information and the line information; A brake cylinder pressure generation unit for generating the brake cylinder pressure required for the vehicle according to the ramp information and the obtained pre-control deceleration.

7. The braking control device for rail transit vehicles according to claim 6, wherein The ramp information generation unit includes; A position information generation module for generating the position information of the destination by using the pre-stored position information and the distance information; A ramp information confirmation module for determining the ramp information of the destination from the line information according to the position information of the destination.

8. The braking control device for rail transit vehicles according to claim 6, wherein The brake cylinder pressure generation unit includes; A braking force calculation module for calculating the braking force required for the vehicle by using the ramp information and the obtained pre-control deceleration; A brake cylinder pressure generation module for generating the brake cylinder pressure according to the braking force.

9. The braking control device for rail transit vehicles according to claim 8, characterized in that, The braking force calculation module includes; A first braking force calculation sub-module for calculating the braking force by using the pre-control deceleration if it is determined according to the ramp information that there is no ramp at the destination; A second braking force calculation sub-module for calculating the braking force by using the pre-control deceleration and the ramp information if it is determined according to the ramp information that there is a ramp at the destination; the ramp information includes the ramp direction and the slope value.

10. The braking control device for rail transit vehicles according to claim 6, wherein It further includes; An information acquisition unit, configured to acquire line information of a rail transit vehicle and real-time position information of the vehicle; An information update unit, configured to update the pre-stored position information to the real-time position information when the difference between the real-time position information and the pre-stored position information of the vehicle in the line information exceeds a preset threshold.

11. A computer device, comprising a memory, a processor, and a computer program stored on the memory and executable on the processor, characterized in that, When the processor executes the computer program, the method according to any one of claims 1 to 5 is implemented.

12. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the method according to any one of claims 1 to 5 is implemented.

13. A computer program product, characterized in that, The computer program product includes a computer program, and when the computer program is executed by a processor, the method according to any one of claims 1 to 5 is implemented.

Images