CN110441077B - Simulation system, method and device for train brake - Google Patents
Simulation system, method and device for train brake Download PDFInfo
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- CN110441077B CN110441077B CN201810418106.1A CN201810418106A CN110441077B CN 110441077 B CN110441077 B CN 110441077B CN 201810418106 A CN201810418106 A CN 201810418106A CN 110441077 B CN110441077 B CN 110441077B
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Abstract
The invention discloses a simulation system, a simulation method and a simulation device of a train brake. The system comprises: the brake controller is used for determining a control command according to a pressure simulation model of the specified train brake, and the pressure simulation model represents the pressure change condition of a specified train pipe in the specified train brake; the brake control simulator is connected with the brake controller and used for simulating the pressure change condition of the specified train pipe by controlling and simulating wind transmitted in the train pipe according to the control command; and the single train brake simulator is connected with the brake control simulator and used for simulating the braking process of the train brake connected with the designated train brake according to the wind transmitted in the simulated train pipe. The invention solves the technical problem that the conventional train braking performance test board is huge in size.
Description
Technical Field
The invention relates to the field of trains, in particular to a system, a method and a device for simulating a train brake.
Background
FIG. 1 is a schematic illustration of a railway freight train brake system according to the prior art, as shown in FIG. 1, the railway freight train air brake system is comprised of a plurality of vehicle brakes connected in series by a train pipe and connected to a locomotive brake. The train air braking system is controlled by the locomotive brake machine in a unified way, a locomotive driver controls the locomotive brake machine to generate 'air charging' or 'air discharging' action, so that the air pressure in a train pipe is changed, the air pressure is transmitted to each train from the locomotive to the rear in sequence through the train pipe, the air pressure change in the train pipe of each train triggers the vehicle brake machine to generate corresponding action, and the train pipe is in different working states, so that the aim of braking or relieving is fulfilled. The pressure change in the train pipe of each train in the train air brake system is driven by the pressure change condition of the train pipe of the previous train, and the pressure change condition of the (N-1) th train pipe determines the working state of the brake of the Nth train.
Fig. 2 is a schematic diagram of a 120-type brake according to the prior art, and as shown in fig. 2, the brake of a main-type vehicle of a railway wagon in China is a 120-type brake, which mainly comprises: a 120-type air control valve 20, a secondary reservoir 22, a brake cylinder 24, an accelerated release reservoir 26, a train pipe 28, and a brake branch pipe 29.
With the requirements of heavy load and speed acceleration of trains and the development of long and large marshalling trains, the requirements on the air brake performance of the trains are higher and higher, and the performance of the air brake system of the freight trains under different working conditions needs to be subjected to deep experimental study, the performance of a control valve is evaluated, and the problems of configuration, safe operation and the like of the air brake system of the freight trains on railways are solved. The railway operation line is mainly used for meeting the railway transportation requirement, a complete period of time is difficult to be set aside for completing the freight train braking performance test, the railway transportation interval can be only utilized for carrying out the test in a plurality of stages, the organization is difficult, a large amount of time and expenditure are consumed, and the obtained result data has large discreteness. The test system developed to meet the test requirements of the train air brake performance is the only way for carrying out the test research of the train air brake performance.
At present, train air brake performance static test beds are generally adopted at home and abroad to carry out train air brake performance tests.
Fig. 3 is a schematic diagram of an overall layout of a train brake performance static test bed according to the prior art, and as shown in fig. 3, the existing train air brake performance static test beds have different forms, but are manufactured by connecting 150 physical vehicle brakes in series, and adopt a formula 1: the general layout of a physical mechanical structure of an actual air brake pipeline, a control valve, an air reservoir and a brake cylinder of a train is shown in figure 3.
FIG. 4 is a schematic diagram of a static test bench base unit according to the prior art, as shown in FIG. 4, the static test bench base unit is generally configured with 2 vehicle brakes as 1 base unit, as shown in FIG. 4, the static test bench base unit is divided into 75 base units which are arranged in parallel, a total measurement and control console is arranged at the end, and the total floor area is about 500m2。
However, the existing train braking performance test bed has the following defects:
1) the train braking performance static test bed has a complex structure and large floor area;
2) 150 sets of sample pieces need to be manufactured and the control valves on the test bed are completely disassembled and replaced for performance evaluation of the novel control valves, so that the test cost is high and the efficiency is low;
3) the train braking performance static test bed has a fixed structure, the number of marshalled trains is difficult to adjust and cannot be expanded, and the train braking performance static test bed is not suitable for the marshalling condition of the long and large trains;
4) the data acquisition points are arranged on a small number of special sections according to the braking performance test requirements of 150 trains, the data volume is not abundant, the braking performance of the trains cannot be comprehensively evaluated, and the braking technology development requirements cannot be met.
Aiming at the problem that the conventional train braking performance test board is large in size, an effective solution is not provided at present.
Disclosure of Invention
The embodiment of the invention provides a simulation system, a method and a device of a train brake, which at least solve the technical problem that the conventional train brake performance test bench is large in size.
According to an aspect of an embodiment of the present invention, there is provided a simulation system of a train brake, including: the brake controller is used for determining a control command according to a pressure simulation model of a specified train brake, wherein the pressure simulation model represents the pressure change condition of a specified train pipe in the specified train brake; the brake control simulator is connected with the brake controller and used for controlling a simulated train pipe of the brake control simulator to simulate the pressure change condition of the specified train pipe according to the control command, wherein the simulation of the pressure change condition of the specified train pipe is realized by the following modes: controlling the wind transmitted in the simulated train pipe according to the control instruction, so that the wind pressure in the simulated train pipe conforms to the pressure change condition of the specified train pipe; and the single-train braking simulator is connected with the braking control simulator and used for simulating the braking process of the train brake connected with the specified train brake according to the wind transmitted in the simulated train pipe.
Optionally, the at least one single vehicle brake simulator includes a plurality of single vehicle brake simulators, wherein the plurality of single vehicle brake simulators are connected in series through the simulation train pipe, and the plurality of single vehicle brake simulators include: the first bicycle brake simulator is connected with the brake control simulator and used for simulating the braking process of the train brake connected with the designated train brake; and the second single-vehicle brake simulator is connected with the first single-vehicle brake simulator and is used for simulating the braking process of the train brakes separated from the designated train brakes by a designated number, wherein the designated number is the number of the single-vehicle brake simulators separated from the brake control simulator by the second single-vehicle brake simulator.
Optionally, the system further comprises: the test sensors are arranged at a plurality of designated positions in the at least one single-vehicle brake simulator and used for acquiring parameter information of the single-vehicle brake simulator in the process of simulating braking.
Optionally, the plurality of test sensors comprises: and the train pipe sensors are arranged on the simulated train pipes and are used for acquiring the pressure information of the simulated train pipes.
Optionally, the system further comprises: the processor is connected with the plurality of train pipe sensors and used for determining the acquisition positions of the train pipe sensors on the simulated train pipes, wherein the acquisition positions correspond to the single-train brake simulator one by one; determining a train brake simulated by the single-train brake simulator corresponding to the acquisition position; and determining a pressure simulation model of the train brake corresponding to the acquisition position according to the pressure information acquired by the acquisition position.
According to another aspect of the embodiments of the present invention, there is also provided a method for simulating a train brake, including: determining a control instruction according to a pressure simulation model of a specified train brake, wherein the pressure simulation model represents the pressure change condition of a specified train pipe in the specified train brake; controlling a simulated train pipe of the brake control simulator to simulate the pressure change condition of the specified train pipe according to the control command, wherein the simulation of the pressure change condition of the specified train pipe is realized by the following modes: controlling the wind transmitted in the simulated train pipe according to the control instruction, so that the wind pressure in the simulated train pipe conforms to the pressure change condition of the specified train pipe; and at least one single train brake simulator simulates the braking process of the train brake connected with the appointed train brake according to the wind transmitted in the simulated train pipe.
Optionally, in the case that at least one single train brake simulator simulates a braking process of a train brake connected to the designated train brake according to wind transmitted in the simulated train pipe, the method further comprises: determining a collecting position for collecting pressure information, wherein the collecting position corresponds to the bicycle brake simulator one to one; determining a train brake simulated by the single-train brake simulator corresponding to the acquisition position; and determining a pressure simulation model of the train brake corresponding to the acquisition position according to the pressure information acquired by the acquisition position.
Optionally, in the case that at least one single train brake simulator simulates a braking process of a train brake connected to the designated train brake according to wind transmitted in the simulated train pipe, the method further comprises: and acquiring parameter information of a plurality of designated positions in the at least one bicycle brake simulator.
According to another aspect of the embodiments of the present invention, there is also provided a simulation apparatus of a train brake, including: the control device comprises a determining unit, a judging unit and a control unit, wherein the determining unit is used for determining a control instruction according to a pressure simulation model of a specified train brake, and the pressure simulation model represents the pressure change condition of a specified train pipe in the specified train brake; the simulation unit is used for controlling the brake controller to simulate the braking process of the specified train brake according to the control command, wherein the simulation of the braking process of the specified train brake is realized by the following modes: controlling the pressure change condition of the simulated train pipe of the brake controller according to the pressure change condition of the specified train pipe; and the control unit is used for controlling at least one single-train brake simulator to simulate the braking process of the train brake connected with the specified train brake according to the pressure change condition of the simulated train pipe.
Optionally, the apparatus further comprises: the first determining module is used for determining an acquisition position for acquiring pressure information under the condition that at least one single-train braking simulator simulates the braking process of a train brake connected with the specified train brake according to wind transmitted in the simulated train pipe, wherein the acquisition position corresponds to the single-train braking simulator one by one; the second determining module is used for determining the train brake simulated by the single-train brake simulator corresponding to the acquisition position; and the third determining module is used for determining a pressure simulation model of the train brake corresponding to the acquisition position according to the pressure information acquired by the acquisition position.
In the embodiment of the invention, a control instruction is determined according to a pressure simulation model of a designated train brake, wind transmitted in a simulated train pipe of a brake control simulator is controlled through the control instruction, the wind pressure of the simulated train pipe is controlled to accord with the pressure change condition of the designated train pipe, so that the brake control simulator can simulate the pressure change condition of the designated train pipe of the designated train brake in the braking process, then the wind transmitted in the simulated train pipe is transmitted to a single train brake simulator connected with the brake control simulator for simulation, the single train brake simulator can simulate the braking process of the train brake connected with the designated train brake according to the wind transmitted in the simulated train pipe, and therefore, any train brake in a train formation can be simulated through the brake control simulator and is matched with the single train brake simulator through the brake control simulator, the train brake simulator can simulate any one of a plurality of train brakes of a marshalling train, and can be matched with at least one train brake simulator through the brake control simulator under the condition of carrying out train brake performance test on the plurality of train brakes in the train marshalling, so that the simulation of the plurality of train brakes can be completed without simulating complete train marshalling, the aim of reducing test equipment is achieved, the technical effect of reducing the size of a train brake performance test system is realized, and the technical problem of huge size of the conventional train brake performance test platform is further solved.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the invention without limiting the invention. In the drawings:
FIG. 1 is a schematic illustration of a railway freight train braking system in accordance with the prior art;
FIG. 2 is a schematic illustration of a 120 type brake according to the prior art;
FIG. 3 is a schematic illustration of an overall layout of a train brake performance stand according to the prior art;
FIG. 4 is a schematic diagram of a base unit of a static test stand according to the prior art;
FIG. 5 is a schematic illustration of a simulation system for a train brake according to an embodiment of the present invention;
FIG. 6 is a flow chart of a method of simulating a train brake according to an embodiment of the present invention;
FIG. 7 is a schematic illustration of a simulation apparatus for a train brake according to an embodiment of the present invention;
FIG. 8 is a schematic diagram of an intelligent test system for train air brake performance according to an embodiment of the invention;
FIG. 9 is a schematic diagram of a brake controller according to an embodiment of the present invention;
FIG. 10 is a schematic illustration of a brake control simulated actuator according to an embodiment of the present invention;
FIG. 11 is a schematic view of a bicycle brake simulator in accordance with an embodiment of the present invention;
FIG. 12 is a schematic diagram of a sensor group for collecting data in accordance with an embodiment of the present invention.
Detailed Description
In order to make the technical solutions of the present invention better understood, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that the terms "first," "second," and the like in the description and claims of the present invention and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the invention described herein are capable of operation in sequences other than those illustrated or described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
Fig. 5 is a schematic view of a simulation system of a train brake according to an embodiment of the present invention, as shown in fig. 5, the system including: the brake controller 51 is used for determining a control command according to a pressure simulation model of a specified train brake, wherein the pressure simulation model represents the pressure change condition of a specified train pipe in the specified train brake; and the brake control simulator 53 is connected with the brake controller and used for controlling the simulated train pipe 57 of the brake control simulator to simulate the pressure change condition of the specified train pipe according to the control command, wherein the pressure change condition of the specified train pipe is simulated by the following modes: controlling the wind transmitted in the simulated train pipe according to the control instruction, so that the wind pressure in the simulated train pipe conforms to the pressure change condition of the specified train pipe; at least one single-train brake simulator 55 is connected to the brake control simulator for simulating a braking process of a train brake connected to the designated train brake based on the wind transmitted in the simulated train pipe.
According to the above embodiment of the invention, a control instruction is determined according to a pressure simulation model of a designated train brake, then the control instruction is used for controlling the wind transmitted in the simulated train pipe of the brake control simulator, the wind pressure of the simulated train pipe is controlled to accord with the pressure change condition of the designated train pipe, so that the brake control simulator can simulate the pressure change condition of the designated train pipe in the braking process of the designated train brake, then the wind transmitted in the simulated train pipe is transmitted to the single train brake simulator connected with the brake control simulator for simulation, so that the single train brake simulator can simulate the braking process of the train brake connected with the designated train brake according to the wind transmitted in the simulated train pipe, thereby simulating any train brake in the train formation through the brake control simulator and matching with the single train brake simulator through the brake control simulator, the train brake simulator can simulate any one of a plurality of train brakes of a marshalling train, and can be matched with at least one train brake simulator through the brake control simulator under the condition of carrying out train brake performance test on the plurality of train brakes in the train marshalling, so that the simulation of the plurality of train brakes can be completed without simulating complete train marshalling, the aim of reducing test equipment is achieved, the technical effect of reducing the size of a train brake performance test system is realized, and the technical problem of huge size of the conventional train brake performance test platform is further solved.
Alternatively, the brake controller may be a terminal with data processing capabilities, such as a computer, a smart phone, etc.
Alternatively, the pressure simulation model of the designated train brake may be stored in advance in a predetermined database. In the case that the brake control simulator needs to be controlled to simulate the designated train brake, the brake controller can retrieve the pressure simulation model corresponding to the designated train brake from the predetermined database.
Optionally, the brake control simulator includes an inflation pipeline, a control solenoid valve set, a balancing reservoir, a relay valve, a reservoir and an air source. Under the condition that a designated train brake is simulated according to a control instruction, the control electromagnetic valve group can be opened to trigger the actions of air charging and air exhausting, the air pressure in the balanced air cylinder is changed, the pressure of a simulated train pipe in the brake control simulator is adjusted according to the air pressure in the balanced air cylinder, the air is transmitted to a single-train brake simulator connected with the brake control simulator through the simulated train pipe, the air pressure in the single-train brake simulator is changed, and the single-train brake simulator simulates the braking process of the train brake connected with the designated train brake.
As an alternative example, in a train consist consisting of 150 cars, if the train brakes of the 20 th car to the 40 th car in the train consist need to be simulated, the train brake of the 19 th car may be set as the designated train brake, and the train brakes of the 20 th car to the 40 th car are simulated by 20 single car brake simulators, respectively.
As an alternative embodiment, the at least one single vehicle brake simulator includes a plurality of single vehicle brake simulators, wherein the plurality of single vehicle brake simulators are connected in series through the simulation train pipe, and the plurality of single vehicle brake simulators include: the first bicycle brake simulator is connected with the brake control simulator and used for simulating the braking process of the train brake connected with the designated train brake; and the second single-vehicle brake simulator is connected with the first single-vehicle brake simulator and is used for simulating the braking process of the train brakes separated from the designated train brakes by the designated number, wherein the designated number is the number of the single-vehicle brake simulators separated from the brake control simulator by the second single-vehicle brake simulator.
By adopting the embodiment of the invention, the first single-train brake simulator is directly connected with the brake control simulator through the simulated train pipe, and the first single-train brake can receive the air volume transmitted through the simulated train pipe of the brake control simulator and simulate the braking process of the train brake connected with the designated train brake.
Alternatively, the second bicycle brake simulator may be another bicycle simulation controller of the plurality of bicycle brake simulators connected in series that is not directly connected to the brake control simulator.
Alternatively, the second bicycle brake may simulate a pressure change of the train pipe according to adjacent other bicycle brakes.
By adopting the embodiment of the invention, the second brake simulator can be determined to simulate the train brakes separated from the designated train brakes by the designated number according to the designated number of the single-train brake simulators separated from the brake control simulator by the second single-train brake simulator.
As an alternative example, in a train consist consisting of 150 cars, if it is necessary to simulate the train brakes of the 20 th car to the 40 th car in the train consist, the train brake of the 19 th car may be set as the designated train brake, and the train brakes of the 20 th car to the 40 th car are simulated by 20 single car brake simulators, so that in the case of simulating the train brake of the 30 th car, the designated number may be 30-19 to 11.
As an alternative embodiment, the embodiment may further include: the test sensors are arranged at a plurality of designated positions in at least one single-vehicle brake simulator and used for acquiring parameter information of the single-vehicle brake simulator in the process of simulating braking.
By adopting the embodiment of the invention, the plurality of test sensors are arranged in the plurality of designated positions in the single-vehicle brake simulator, the parameter information of the plurality of designated positions in the single-vehicle brake simulator can be acquired, and the performance analysis of the train brake simulated by the single-vehicle brake simulator can be further carried out according to the parameter information in the plurality of designated positions.
As an alternative embodiment, the plurality of test sensors includes: and the train pipe sensors are arranged on the simulation train pipe and used for acquiring pressure information of the simulation train pipe.
By adopting the embodiment of the invention, the pressure information of the simulated train pipe can be acquired by arranging the plurality of train pipe sensors on the simulated train pipe, so that the pressure change condition of the simulated train pipe can be detected according to the pressure information of the simulated train pipe.
Optionally, the position where the test sensor is arranged may correspond to the brake control simulator, and may also correspond to the single-vehicle brake simulator, and according to the pressure information collected by the test simulator at the designated position, the pressure change condition of the train pipe simulated by the brake control simulator or the single-vehicle brake simulator corresponding to the designated position may be obtained.
Optionally, pressure information acquired by the train pipe sensor at the specified position may be acquired, the train brake simulated by the brake control simulator or the single-train brake simulator at the specified position is determined, the acquired pressure information is compared with the pressure simulation model of the train brake, and whether the simulation result is accurate or not may be determined according to the comparison result.
Optionally, the collected pressure information is compared with the pressure simulation model of the train brake, and the control instruction determined according to the pressure simulation model of the designated train brake can be corrected according to the comparison result.
As an alternative embodiment, the embodiment may further include: the processor is connected with the plurality of train pipe sensors and is used for determining the acquisition positions of the train pipe sensors on the simulated train pipes, wherein the acquisition positions correspond to the single-train brake simulators one by one; determining a train brake simulated by the single-train brake simulator corresponding to the acquisition position; and determining a pressure simulation model of the train brake corresponding to the acquisition position according to the pressure information acquired by the acquisition position.
By adopting the embodiment of the invention, the train brake simulated by the single-train brake simulator corresponding to the acquisition position is determined according to the acquisition position on the simulated train pipe, and further, the pressure simulation model of the train brake corresponding to the acquisition position can be determined according to the pressure information acquired by the acquisition position.
For example, in a train consist consisting of 150 cars, if the train brakes of the 20 th car and the 40 th car in the train consist need to be simulated, and only 20 single-car brake simulators exist in the simulation system of the train brakes, the brake control simulator can be made to simulate the train brake of the 1 st car, the 20 single-car brake simulators can be made to respectively simulate the train brakes of the 2 nd car to the 21 st car, then the pressure data of the simulated pressure pipe of the 18 th single-car brake simulator (i.e. the single-car brake simulator simulating the train brake of the 19 th car) is collected, and a pressure simulation model is determined according to the pressure data, so that the pressure simulation model is the pressure simulation model of the train brake of the 19 th car. Then the brake control simulator simulates the train brake of the 19 th vehicle, and the 20 single vehicle brake simulators simulate the train brakes of the 20 th vehicle to the 40 th vehicle respectively.
In accordance with an embodiment of the present invention, an air brake simulation method embodiment is provided, it being noted that the steps illustrated in the flowchart of the drawings may be performed in a computer system, such as a set of computer-executable instructions, and that while a logical order is illustrated in the flowchart, in some cases the steps illustrated or described may be performed in an order different than presented herein.
Fig. 6 is a flowchart of a simulation method of a train brake according to an embodiment of the present invention, as shown in fig. 6, the method includes the steps of:
step S602, determining a control instruction according to a pressure simulation model of the specified train brake, wherein the pressure simulation model represents the pressure change condition of a specified train pipe in the specified train brake;
step S604, controlling a simulated train pipe of the brake control simulator to simulate the pressure change condition of the specified train pipe according to the control command, wherein the pressure change condition of the specified train pipe is simulated by the following method: controlling the wind transmitted in the simulated train pipe according to the control instruction, so that the wind pressure in the simulated train pipe conforms to the pressure change condition of the specified train pipe;
step S606, at least one single train brake simulator simulates the braking process of the train brake connected with the designated train brake according to the wind transmitted in the simulated train pipe.
Through the steps, a control instruction is determined according to a pressure simulation model of a designated train brake, wind transmitted in a simulated train pipe of a brake control simulator is controlled through the control instruction, the wind pressure of the simulated train pipe is controlled to accord with the pressure change condition of the designated train pipe, the brake control simulator can simulate the pressure change condition of the designated train pipe of the designated train brake in the braking process, then the wind transmitted in the simulated train pipe is transmitted to a single train brake simulator connected with the brake control simulator for simulation, the single train brake simulator can simulate the braking process of the train brake connected with the designated train brake according to the wind transmitted in the simulated train pipe, and therefore any train brake in a train formation can be simulated through the brake control simulator and is matched with the single train brake simulator through the brake control simulator, the train brake simulator can simulate any one of a plurality of train brakes of a marshalling train, and can be matched with at least one train brake simulator through the brake control simulator under the condition of carrying out train brake performance test on the plurality of train brakes in the train marshalling, so that the simulation of the plurality of train brakes can be completed without simulating complete train marshalling, the aim of reducing test equipment is achieved, the technical effect of reducing the size of a train brake performance test system is realized, and the technical problem of huge size of the conventional train brake performance test platform is further solved.
As an alternative embodiment, in the case where at least one of the single-train brake simulators simulates a braking process of a train brake connected to a designated train brake based on wind transmitted in the simulated train pipe, the embodiment includes: determining an acquisition position for acquiring pressure information, wherein the acquisition position corresponds to the bicycle brake simulator one by one; determining a train brake simulated by the single-train brake simulator corresponding to the acquisition position; and determining a pressure simulation model of the train brake corresponding to the acquisition position according to the pressure information acquired by the acquisition position.
As an alternative embodiment, in the case where at least one of the single-train brake simulators simulates a braking process of a train brake connected to a designated train brake based on wind transmitted in the simulated train pipe, the embodiment may further include: parameter information for a plurality of designated locations within at least one bicycle brake simulator is collected.
According to yet another embodiment of the present invention, there is also provided a storage medium including a stored program, wherein the program is operative to perform any one of the above-described method of simulating a train brake.
According to yet another embodiment of the present invention, there is also provided a processor for executing a program, wherein the program when executed performs the method of simulating a train brake of any one of the above.
According to an embodiment of the present invention, there is further provided an embodiment of a simulation apparatus for a train brake, where the simulation apparatus for a train brake may be used to execute the simulation method for a train brake in the embodiment of the present invention, and the simulation method for a train brake in the embodiment of the present invention may be executed in the simulation apparatus for a train brake.
Fig. 7 is a schematic view of a simulation apparatus of a train brake according to an embodiment of the present invention, as shown in fig. 7, the apparatus may include: a determining unit 71, configured to determine a control instruction according to a pressure simulation model of a designated train brake, where the pressure simulation model represents a pressure change condition of a designated train pipe in the designated train brake; the simulation unit 73 is used for controlling a simulated train pipe of the brake control simulator to simulate the pressure change condition of the specified train pipe according to the control instruction, wherein the pressure change condition of the specified train pipe is simulated by the following method: controlling the wind transmitted in the simulated train pipe according to the control instruction, so that the wind pressure in the simulated train pipe conforms to the pressure change condition of the specified train pipe; a control unit 75 for at least one of the bicycle brake simulators to simulate the braking process of the train brake connected to the designated train brake based on the wind transmitted in the simulated train pipe.
It should be noted that the determining unit 71 in this embodiment may be configured to execute step S602 in this embodiment, the simulating unit 73 in this embodiment may be configured to execute step S604 in this embodiment, and the controlling unit 75 in this embodiment may be configured to execute step S606 in this embodiment. The modules are the same as the corresponding steps in the realized examples and application scenarios, but are not limited to the disclosure of the above embodiments.
According to the above embodiment of the invention, a control instruction is determined according to a pressure simulation model of a designated train brake, then the control instruction is used for controlling the wind transmitted in the simulated train pipe of the brake control simulator, the wind pressure of the simulated train pipe is controlled to accord with the pressure change condition of the designated train pipe, so that the brake control simulator can simulate the pressure change condition of the designated train pipe in the braking process of the designated train brake, then the wind transmitted in the simulated train pipe is transmitted to the single train brake simulator connected with the brake control simulator for simulation, so that the single train brake simulator can simulate the braking process of the train brake connected with the designated train brake according to the wind transmitted in the simulated train pipe, thereby simulating any train brake in the train formation through the brake control simulator and matching with the single train brake simulator through the brake control simulator, the train brake simulator can simulate any one of a plurality of train brakes of a marshalling train, and can be matched with at least one train brake simulator through the brake control simulator under the condition of carrying out train brake performance test on the plurality of train brakes in the train marshalling, so that the simulation of the plurality of train brakes can be completed without simulating complete train marshalling, the aim of reducing test equipment is achieved, the technical effect of reducing the size of a train brake performance test system is realized, and the technical problem of huge size of the conventional train brake performance test platform is further solved.
As an alternative embodiment, the embodiment may further include: the first determining module is used for determining an acquisition position for acquiring pressure information under the condition that at least one single-train braking simulator simulates the braking process of a train brake connected with the specified train brake according to wind transmitted in the simulated train pipe, wherein the acquisition position corresponds to the single-train braking simulator one by one; the second determining module is used for determining the train brake simulated by the single-train brake simulator corresponding to the acquisition position; and the third determining module is used for determining a pressure simulation model of the train brake corresponding to the acquisition position according to the pressure information acquired by the acquisition position.
The invention also provides a preferred embodiment, and the preferred embodiment provides an intelligent test system for the air brake performance of the train.
The intelligent test system for the air brake performance of the train provided by the invention can be used for researching the performance of the air brake of the railway freight train.
The intelligent test system for the air brake performance of the train provided by the invention utilizes a digitization technology to carry out theoretical research and numerical simulation on a brake valve and a train brake pipeline in the braking process, simulates the change rule and the technical characteristics in the action process, generates a virtual digital simulation model, is combined with a small amount of (about 20 trains) physical train air brake systems, carries out model calculation, correction and cyclic derivation tests, evaluates the performance of a control valve and solves the problems related to the air brake performance of the railway freight train.
Fig. 8 is a schematic diagram of an intelligent train air brake performance testing system according to an embodiment of the present invention, as shown in fig. 8, including: the system comprises a brake controller 81, a brake control simulation actuator 82 and a single-vehicle brake simulation device 83, and a sensor group 84 for collecting data is arranged at most positions of a train pipe, an auxiliary air cylinder, a brake air cylinder, an acceleration release air cylinder and the like in the system.
According to the technical scheme provided by the invention, the virtual train air brake system and the physical single-train brake simulation device can be connected, and more new train brake test systems are formed through cyclic derivation, so that the performance evaluation and the technical analysis test of the train air brake system are realized.
Optionally, the brake controller comprises: a brake microcomputer control unit and a brake simulation software system.
Alternatively, the present invention provides a system in which 20 sets of the single-vehicle brake simulation devices 83 can be used, wherein the 20 single-vehicle brake simulation devices 83 are connected in series through a train pipe.
The invention mainly uses a plurality of sets of bicycle brake simulation devices as a goods wagon air brake system, uses a train air brake system digital simulation model and a brake simulation software system as a virtual train air brake system, and uses a brake controller 81 and a brake control simulation actuator 82 as control devices of virtual and physical interfaces to form the freight train air brake intelligent test system, and the floor area is about 80m2。
FIG. 9 is a schematic diagram of a brake controller according to an embodiment of the present invention, as shown in FIG. 9, including: the brake system comprises an upper computer 91, a brake microcomputer control unit 92 and a data acquisition unit 93.
FIG. 10 is a schematic illustration of a brake control simulated actuator according to an embodiment of the present invention, as shown in FIG. 10, including; the air charging system comprises an air charging pipeline 101, a control solenoid valve set 102, an equalizing air cylinder 103, a relay valve 104, an air storage cylinder 105 and an air source 106.
FIG. 11 is a schematic view of a bicycle brake simulator, as shown in FIG. 11, including in accordance with an embodiment of the present invention; an auxiliary reservoir 111, a brake reservoir 112, an accelerated release reservoir 113, an air distribution valve 114, and a dust collector 115.
Fig. 12 is a schematic diagram of a sensor group for collecting data according to an embodiment of the present invention, as shown in fig. 12, including: a equalizing reservoir pressure sensor 121, a train pipe pressure sensor 122, a flow sensor 123, a single vehicle brake branch pressure sensor 124, an auxiliary reservoir pressure sensor 125, a brake cylinder pressure sensor 126, and an accelerated release reservoir pressure sensor 127.
It is noted that equalization reservoir pressure sensor 121, train pipe pressure sensor 122, bicycle brake branch pressure sensor 124, auxiliary reservoir pressure sensor 125, brake cylinder pressure sensor 126, and accelerated release reservoir pressure sensor 127 may be air pressure sensors.
Alternatively, the flow sensor 123 and the air pressure sensors 124, 125, 126, 127 are distributed as shown in fig. 10 and 11.
According to the technical scheme provided by the invention, the air pressure change of the action of the vehicle braking system of different marshalling and vehicle positions of the train can be simulated through the braking controller 81 and the braking control simulation actuator 82, and the vehicle braking, relieving and pressure maintaining actions of different marshalling and vehicle positions of the train are realized on one or more single-vehicle braking simulation devices 83. Novel control valve performance evaluation and train brake performance analysis studies are performed by collecting brake air pressure information at multiple points using flow sensors 123, air pressure sensors 124, 125, 126, 127 installed at various positions in the data-collected sensor group 84.
According to the technical scheme provided by the invention, the intelligent train braking performance test system established in a virtual and physical combined mode is simple in structure and reasonable in layout, and saves space; on the intelligent test system for the braking performance of the train, a semi-physical simulation method is adopted for testing, and only a physical structure of not more than 20 marshalls needs to be adjusted, so that the labor intensity and the workload are greatly reduced, the cost investment is saved, and the working efficiency is improved; the train air brake system simulation model with any marshalling form, marshalling position and unlimited marshalling length can be established by using a digital technology, and is connected with a small number of real objects for testing, the number of marshalling vehicles is flexibly adjusted, the marshalling length can be infinitely expanded, and the train air brake system simulation model meets the requirement of a braking performance test of a long and large marshalling train; the measurement points are arranged on the train pipe, the auxiliary reservoir, the brake cylinder and the like on the 20 single-train brake simulation devices 83, can be used as the train brake at any position in a train to perform tests, collects complete and rich test data, analyzes the change rule of the brake pressure of different stages of train braking, and is suitable for comprehensively evaluating the air brake performance of the train.
Based on the intelligent test system for the air brake performance of the train, the invention also provides a semi-physical simulation test method for the air brake performance of the railway freight train.
The semi-physical simulation test method is a method for testing by combining a virtual train air brake system simulation model and a physical single-train brake simulation device.
According to the technical scheme provided by the invention, a set of digital simulation model for simulating the air braking process and performance can be established in a computer, and the digital simulation model is verified through a physical vehicle brake test and stored in a brake simulation software system database; the brake microcomputer control unit calls a train pipe pressure change digital simulation model (namely a preset train pipe pressure model) of the first vehicle, converts a control command to control the brake control simulation actuator 82 to act, completes the actual train pipe pressure change process consistent with the train pipe pressure change digital simulation model of the first vehicle, and enables the single-vehicle brake simulation device 83 to act as a second vehicle to generate braking or release action; the test data is obtained by the sensor group 84 which is arranged at the actual train pipe, the auxiliary reservoir, the accelerated release reservoir, the brake cylinder and other positions on the single-vehicle brake simulation device 83 and used for collecting data, and the test data is transmitted to the brake controller for data processing, analysis, display and the like.
Optionally, the train pipe pressure change data and the theoretical digital simulation model can be compared and corrected to obtain an accurate second train digital simulation model, the accurate second train digital simulation model is used for the microcomputer control unit to call for a next round of test, and the derivation test is circularly carried out to obtain test data of infinite marshalling train numbers of a third train, a fourth train … …, an Nth train and the like, so that the train air braking performance is comprehensively evaluated.
Alternatively, the high-speed switch type electromagnetic valve and the matched control technology thereof in the control system can be realized by replacing a proportional valve and the matched control technology thereof.
The semi-physical simulation test method for the air brake performance of the railway freight train can reduce the labor intensity, reduce the workload, reduce the cost investment and improve the working efficiency, and in the test process, the marshalling of the train is flexible and the number of marshalled trains can be expanded infinitely;
the semi-physical simulation test method for the air brake performance of the railway freight train provided by the invention has the advantages of simple structure among test equipment, reasonable layout, space saving and comprehensive and rich data acquisition.
The above-mentioned serial numbers of the embodiments of the present invention are merely for description and do not represent the merits of the embodiments.
In the above embodiments of the present invention, the descriptions of the respective embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to related descriptions of other embodiments.
In the embodiments provided in the present application, it should be understood that the disclosed technology can be implemented in other ways. The above-described embodiments of the apparatus are merely illustrative, and for example, the division of the units may be a logical division, and in actual implementation, there may be another division, for example, multiple units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, units or modules, and may be in an electrical or other form.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.
The integrated unit, if implemented in the form of a software functional unit and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a removable hard disk, a magnetic or optical disk, and other various media capable of storing program codes.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (10)
1. A simulation system for a train brake, comprising:
the brake controller is used for determining a control command according to a pressure simulation model of a specified train brake, wherein the pressure simulation model represents the pressure change condition of a specified train pipe in the specified train brake;
the brake control simulator is connected with the brake controller and used for controlling a simulated train pipe of the brake control simulator to simulate the pressure change condition of the specified train pipe according to the control command, wherein the simulation of the pressure change condition of the specified train pipe is realized by the following modes: controlling the wind transmitted in the simulated train pipe according to the control instruction, so that the wind pressure in the simulated train pipe conforms to the pressure change condition of the specified train pipe;
and the single-train braking simulator is connected with the braking control simulator and used for simulating the braking process of the train brake connected with the specified train brake according to the wind transmitted in the simulated train pipe.
2. The system of claim 1, wherein the at least one single vehicle brake simulator comprises a plurality of single vehicle brake simulators, wherein the plurality of single vehicle brake simulators are connected in series via the simulated train pipe, the plurality of single vehicle brake simulators comprising:
the first bicycle brake simulator is connected with the brake control simulator and used for simulating the braking process of the train brake connected with the designated train brake;
and the second single-vehicle brake simulator is connected with the first single-vehicle brake simulator and is used for simulating the braking process of the train brakes separated from the designated train brakes by a designated number, wherein the designated number is the number of the single-vehicle brake simulators separated from the brake control simulator by the second single-vehicle brake simulator.
3. The system of claim 1, further comprising:
the test sensors are arranged at a plurality of designated positions in the at least one single-vehicle brake simulator and used for acquiring parameter information of the single-vehicle brake simulator in the process of simulating braking.
4. The system of claim 3, wherein the plurality of test sensors comprises:
and the train pipe sensors are arranged on the simulated train pipes and are used for acquiring the pressure information of the simulated train pipes.
5. The system of claim 4, further comprising:
the processor is connected with the plurality of train pipe sensors and used for determining the acquisition positions of the train pipe sensors on the simulated train pipes, wherein the acquisition positions correspond to the single-train brake simulator one by one; determining a train brake simulated by the single-train brake simulator corresponding to the acquisition position; and determining a pressure simulation model of the train brake corresponding to the acquisition position according to the pressure information acquired by the acquisition position.
6. A method of simulating a train brake, comprising:
determining a control instruction according to a pressure simulation model of a specified train brake, wherein the pressure simulation model represents the pressure change condition of a specified train pipe in the specified train brake;
controlling a simulated train pipe of a brake control simulator to simulate the pressure change condition of the specified train pipe according to the control command, wherein the simulation of the pressure change condition of the specified train pipe is realized by the following modes: controlling the wind transmitted in the simulated train pipe according to the control instruction, so that the wind pressure in the simulated train pipe conforms to the pressure change condition of the specified train pipe;
and at least one single train brake simulator simulates the braking process of the train brake connected with the appointed train brake according to the wind transmitted in the simulated train pipe.
7. The method of claim 6, wherein in the event that at least one single train brake simulator simulates a braking process of a train brake coupled to the designated train brake based on wind transmitted in the simulated train pipe, the method further comprises:
determining a collecting position for collecting pressure information, wherein the collecting position corresponds to the bicycle brake simulator one to one;
determining a train brake simulated by the single-train brake simulator corresponding to the acquisition position;
and determining a pressure simulation model of the train brake corresponding to the acquisition position according to the pressure information acquired by the acquisition position.
8. The method of claim 6, wherein in the event that at least one single train brake simulator simulates a braking process of a train brake coupled to the designated train brake based on wind transmitted in the simulated train pipe, the method further comprises:
and acquiring parameter information of a plurality of designated positions in the at least one bicycle brake simulator.
9. A simulator for a train brake, comprising:
the control device comprises a determining unit, a judging unit and a control unit, wherein the determining unit is used for determining a control instruction according to a pressure simulation model of a specified train brake, and the pressure simulation model represents the pressure change condition of a specified train pipe in the specified train brake;
the simulation unit is used for controlling a simulation train pipe of the brake control simulator to simulate the pressure change condition of the specified train pipe according to the control command, wherein the simulation of the pressure change condition of the specified train pipe is realized by the following method: controlling the wind transmitted in the simulated train pipe according to the control instruction, so that the wind pressure in the simulated train pipe conforms to the pressure change condition of the specified train pipe;
and the control unit is used for simulating the braking process of the train brake connected with the specified train brake by at least one single train braking simulator according to the wind transmitted in the simulated train pipe.
10. The apparatus of claim 9, further comprising:
the first determining module is used for determining an acquisition position for acquiring pressure information under the condition that at least one single-train braking simulator simulates the braking process of a train brake connected with the specified train brake according to wind transmitted in the simulated train pipe, wherein the acquisition position corresponds to the single-train braking simulator one by one;
the second determining module is used for determining the train brake simulated by the single-train brake simulator corresponding to the acquisition position;
and the third determining module is used for determining a pressure simulation model of the train brake corresponding to the acquisition position according to the pressure information acquired by the acquisition position.
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