CN113658479A - Train gas circuit simulation method, device and medium - Google Patents

Train gas circuit simulation method, device and medium Download PDF

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Publication number
CN113658479A
CN113658479A CN202110979034.XA CN202110979034A CN113658479A CN 113658479 A CN113658479 A CN 113658479A CN 202110979034 A CN202110979034 A CN 202110979034A CN 113658479 A CN113658479 A CN 113658479A
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train
simulation
simulated
pressure
section
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CN113658479B (en
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朱运兰
苏以佳
郑旭
侯晓龙
刘帅
张冶
辛青青
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Zhengzhou J&T Hi Tech Co Ltd
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Zhengzhou J&T Hi Tech Co Ltd
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    • GPHYSICS
    • G09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09BEDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
    • G09B9/00Simulators for teaching or training purposes
    • G09B9/02Simulators for teaching or training purposes for teaching control of vehicles or other craft
    • G09B9/04Simulators for teaching or training purposes for teaching control of vehicles or other craft for teaching control of land vehicles
    • GPHYSICS
    • G09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09BEDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
    • G09B25/00Models for purposes not provided for in G09B23/00, e.g. full-sized devices for demonstration purposes
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02TCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T90/00Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation

Abstract

The application provides a train gas circuit simulation method, a device and a medium, wherein the method comprises the following steps: according to the gas circuit structure of the train, establish the emulation train model, the emulation train model includes: a simulation knuckle and a simulation brake valve; the simulation train section comprises a simulation train pipe and a simulation brake cylinder; responding to a first control instruction aiming at the simulation train model, controlling the simulation brake valve to act, and controlling the simulation brake valve to output a brake signal to a simulation train pipe of the simulation train section; after the simulated train pipe of the simulated train section receives the brake signal, determining the pressure change condition of the simulated train pipe according to the influence of the brake signal on the pressure of the simulated train pipe; and determining the braking force change condition of the simulation brake cylinder according to the influence of the pressure in the simulation train pipe in the simulation train section on the braking force of the simulation brake cylinder. The method can conveniently and visually display the condition change in the train gas circuit.

Description

Train gas circuit simulation method, device and medium
Technical Field
The application relates to the field of train simulation, in particular to a train gas circuit simulation method, device and medium.
Background
In China, a world with large objects, railways are the most important vehicles and are the backbone of the national transportation system. In the past twenty years, the trains in China gradually develop from the traditional green-skin trains to the current harmonious numbers, the speed of the trains is increased again and again, and the number of the trains is also increased continuously.
The speed of the train is increased over and over again, placing higher demands on the braking system of the train. The train can be braked safely, which is an important guarantee for the safe operation of the train, and if the train braking safety can not be guaranteed, the train can not be driven, and the safe driving can not be guaranteed.
The air pressure change in the air path of the train is closely related to whether the train can be safely braked, so that train drivers and maintainers must be skilled in mastering the change condition of the air path of the train, and the train drivers and maintainers can timely deal with and deal with abnormal conditions in the air path. However, it is difficult to call a special train to arrange a real vehicle for special training, and the driver's cab of the real vehicle has a small space area and a very limited number of trainees, so that the class time for trainees is short; the gas circuit change condition is not intuitive enough, even if a student trains on the spot by means of car following and the like, systematic and intuitive training is still lacked, so the capability of normal inspection, abnormal condition judgment and processing of the gas circuit of train crews and maintainers still needs to be improved.
Disclosure of Invention
In view of the above, an object of the present application is to provide a method, an apparatus, and a medium for train gas circuit simulation, which can conveniently and intuitively display the condition change in the train gas circuit, so as to sufficiently train students on the capability of normal inspection and abnormal condition judgment and processing of the gas circuit.
The train gas circuit simulation method provided by the embodiment of the application comprises the following steps:
according to the gas circuit structure of the train, constructing a simulation train model corresponding to the train; the simulation train model comprises: a simulation knuckle and a simulation brake valve; the simulation train section comprises a simulation train pipe and a simulation brake cylinder;
responding to a first control instruction aiming at the simulation train model, controlling the simulation brake valve to act, and controlling the simulation brake valve to output a brake signal to a simulation train pipe of the simulation train section;
after the simulated train pipe of the simulated train section receives the brake signal, determining the pressure change condition of the simulated train pipe according to the influence of the brake signal on the pressure of the simulated train pipe;
and determining the braking force change condition of the simulated brake cylinder according to the influence of the pressure in the simulated train pipe in the simulated train section on the braking force of the simulated brake cylinder.
In some embodiments, the train gas circuit simulation method further includes:
the simulation vehicle section also comprises a simulation angle cock, a simulation cut cock and a connecting hose;
responding to a second control instruction aiming at the simulation train model, and controlling the simulation train section to have a fault condition; the fault condition includes at least one of: closing the simulated angle cock, closing the simulated cut cock and disconnecting the connecting hose;
responding to a first control instruction aiming at the simulated train model by the simulated train section in the fault condition, controlling the simulated brake valve to act, and controlling the simulated brake valve to output a brake signal to a simulated train pipe of the simulated train section;
after the simulated train pipe of the simulated train section receives the brake signal, determining the pressure change condition of the simulated train pipe under the fault condition according to the influence of the brake signal on the pressure of the simulated train pipe;
and determining the braking force change information of the simulation brake cylinder under the fault condition according to the influence of the pressure of the simulation train pipe in the simulation train section on the braking force of the simulation brake cylinder.
In some embodiments, when the constructed simulated train model includes a plurality of simulated train sections, after receiving the braking signal, the presetting of the simulated train pipe of the simulated train section includes:
determining the pressure change condition of the simulated train pipe in each simulated train section according to the influence of the brake signal on the pressure of the simulated train pipe in each simulated train section;
and determining the braking force change condition of the simulation brake cylinder in each simulation train section according to the influence of the pressure in the simulation train pipe in each simulation train section on the braking force of the simulation brake cylinder in the simulation train section.
In some embodiments, when the constructed simulated train model comprises a plurality of simulated trains, the method further comprises:
responding to a third control instruction aiming at the simulation train model, and controlling the train model to generate an abnormal condition; the abnormal conditions of the train model are as follows: the fault condition of at least one simulated vehicle section occurs;
the train model in the abnormal condition responds to a first control instruction aiming at the simulation train model, controls the simulation brake valve to act, and controls the simulation brake valve to output a brake signal to a simulation train pipe of a preset simulation train section;
after the simulated train pipe of the preset simulated train section receives the brake signal, determining the pressure change condition of the simulated train pipe in each simulated train section of the train model in the abnormal condition according to the influence of the brake signal on the pressure of the simulated train pipe in each simulated train section;
and according to the influence of the pressure in the simulation train pipe in each simulation train section on the braking force of the simulation brake cylinder in the simulation train section, the braking force change condition of the simulation brake cylinder in each simulation train section of the train model in the abnormal condition is obtained.
In some embodiments, when the simulated train model performs overall braking, determining a pressure change condition of the simulated train pipe in each simulated train section according to an influence of the braking signal on the pressure of the simulated train pipe in each simulated train section includes:
calculating the target decompression amount of the train pipe of each simulated train section according to the braking signal;
determining a simulated train section which should be ventilated in the simulated train model according to the structure of the simulated train model;
controlling the pressure in the simulated train pipe of the simulated train section to be ventilated to be reduced to the target pressure reduction amount according to a preset pressure change rule;
repeating the following steps in the process that the pressure in the simulated train pipe of the simulated train section which needs to be ventilated is reduced to the target decompression amount until the pressure of the simulated train pipe of each simulated train section is reduced to the target decompression amount so as to determine the pressure change condition in each simulated train pipe:
judging whether the pressure in the simulation train pipe of each simulation train section is greater than the pressure in the simulation train pipes of the adjacent simulation train sections on the two sides of the simulation train section;
and if the pressure in the simulated train pipe of the simulated train section is at least greater than the pressure in the simulated train pipe of the simulated train section adjacent to one side of the simulated train section, reducing the pressure in the simulated train pipe of the simulated train section according to a preset pressure change rule.
In some embodiments, when the simulated train model is integrally released, determining a pressure change condition of the simulated train pipe in each simulated train section according to an influence of the brake signal on the pressure of the simulated train pipe in each simulated train section includes:
calculating the target decompression amount of the train pipe of each simulated train section according to the braking signal;
determining a simulated train section which is required to be inflated in the simulated train model according to the structure of the simulated train model;
controlling the pressure in the simulated train pipe of the simulated train section to be inflated to increase to the target decompression amount according to a preset pressure change rule;
in the process that the pressure in the simulated train pipe of the simulated train section which is to be inflated is increased to the target decompression amount, repeating the following steps until the pressure of the simulated train pipe of each simulated train section is increased to the target decompression amount so as to determine the pressure change condition in each simulated train pipe:
judging whether the pressure in the simulation train pipe of each simulation train section is smaller than the pressure in the simulation train pipes of the simulation train sections adjacent to the two sides of the simulation train section;
and if the pressure in the simulated train pipe of the simulated train section is at least smaller than the pressure in the simulated train pipe of the simulated train section adjacent to one side of the simulated train section, increasing the pressure in the simulated train pipe of the simulated train section according to a preset pressure change rule.
In some embodiments, the simulated train model further comprises a simulated master reservoir;
when the train model is relieved, after the simulated train pipe of the simulated train section receives the brake signal and determines the pressure change condition of the simulated train pipe according to the influence of the brake signal on the pressure of the simulated train pipe, the method further comprises the following steps: and determining the pressure change condition in the simulated main reservoir according to the pressure change condition of the simulated train pipe.
In some embodiments, the train gas circuit simulation method further includes, in response to a fourth control instruction for the simulated train model, controlling the simulated train model to be in a hold state so that a simulated master reservoir, a simulated train pipe and a simulated brake cylinder of the simulated train model are in a hold state;
determining the pressure change conditions of the simulation main air cylinder, the simulation train pipe and the simulation brake cylinder when the simulation train model is in a holding state according to the pressure reduction rules of the simulation main air cylinder, the simulation train pipe and the simulation brake cylinder of the simulation train model; and the pressure drop rule is determined according to the air tightness of the simulation main air cylinder, the simulation train pipe and the simulation brake cylinder.
In some embodiments, there is also provided a train gas circuit simulation apparatus, the apparatus comprising:
the building module is used for building a simulation train model corresponding to the train according to the gas circuit structure of the train; the simulation train model comprises: a simulation knuckle and a simulation brake valve; the simulation train section comprises a simulation train pipe and a simulation brake cylinder;
the control module is used for responding to a first control instruction aiming at the simulation train model, controlling the simulation brake valve to act, and controlling the simulation brake valve to output a brake signal to a simulation train pipe of the simulation train section;
the first determining module is used for determining the pressure change condition of the simulation train pipe according to the influence of the brake signal on the pressure of the simulation train pipe after the simulation train pipe of the simulation train section receives the brake signal;
and the second determination module is used for determining the braking force change condition of the simulated brake cylinder according to the influence of the pressure in the simulated train pipe in the simulated train section on the braking force of the simulated brake cylinder.
In some embodiments, there is also provided a computer readable storage medium having stored thereon a computer program which, when executed by a processor, performs the steps of the train gas circuit simulation method.
According to the method, the change conditions of the braking force of the train under various control instructions are displayed through the simulated train model, the change process of the gas circuit in the train can be conveniently displayed by the train related staff, the difficulty of real train training is solved, the display field space is limited little, the number of students is large, and the display effect of the gas circuit change is guaranteed; the change condition of the gas circuit is very visual, and after the train related workers are trained by the simulation method, the change condition of the gas circuit can be specifically and visually recognized, so that the normal checking, abnormal condition judging and processing capabilities of the gas circuit of the train related workers during working are improved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained from the drawings without inventive effort.
Fig. 1 shows a method flowchart of a train gas circuit simulation method according to an embodiment of the present application;
FIG. 2 is a flow chart of a method for determining a pressure change condition in each of the simulated train conductors during the overall braking of the simulated train model according to the embodiment of the present application;
FIG. 3 is a flowchart of a method for determining a pressure change condition in each section of the simulated train pipe when the simulated train model is subjected to overall mitigation according to the embodiment of the present application;
FIG. 4 shows a flow chart of a method for simulating a train gas circuit fault according to an embodiment of the present application;
fig. 5 shows a schematic structural diagram of a train gas circuit simulation device according to an embodiment of the present application.
Detailed Description
In order to make the purpose, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it should be understood that the drawings in the present application are for illustrative and descriptive purposes only and are not used to limit the scope of protection of the present application. Additionally, it should be understood that the schematic drawings are not necessarily drawn to scale. The flowcharts used in this application illustrate operations implemented according to some embodiments of the present application. It should be understood that the operations of the flow diagrams may be performed out of order, and steps without logical context may be performed in reverse order or simultaneously. One skilled in the art, under the guidance of this application, may add one or more other operations to, or remove one or more operations from, the flowchart.
In addition, the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. The components of the embodiments of the present application, generally described and illustrated in the figures herein, can be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the present application, presented in the accompanying drawings, is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present application without making any creative effort, shall fall within the protection scope of the present application.
It should be noted that in the embodiments of the present application, the term "comprising" is used to indicate the presence of the features stated hereinafter, but does not exclude the addition of further features.
The air pressure change in the train air circuit is closely related to whether the train can be safely braked. The structure of the air passage in the train is as follows: the train comprises a main reservoir and a brake valve corresponding to the main reservoir, wherein the brake valve is commonly called a large brake and a small brake; the main reservoir of the train and the large and small brake are usually arranged in the train head; each train section of the train is provided with an auxiliary reservoir, a brake cylinder and a train pipe, and in the embodiment, the train head can also be called a train section. The train sections of the train are sequentially connected in series, train pipes of the train sections are also sequentially connected in series and communicated with the main air cylinder, the train pipe corresponding to each train section is also communicated with an auxiliary air cylinder of the train section, and the auxiliary air cylinder is communicated with the brake cylinder. The front end and the rear end of each section of the train section are respectively provided with a folding angle cock and a connecting hose, and the folding angle cock and the connecting hose are used for controlling the train section to be communicated or not communicated with the train pipe of the adjacent train section. Each section of the vehicle is provided with a cut-off cock, and the cut-off cock is used for controlling the auxiliary reservoir to be communicated with the brake cylinder or not.
The braking process of the train air circuit is as follows: and when the large brake and the small brake are pulled and braked, the control signal is directly sent to a corresponding valve of the train pipe directly connected with the main air reservoir to control the pressure change of the train pipe. When the air is released, the main air cylinder is controlled to fill air into the train pipe; the control signal enables the pressure in the train pipe to change, the pressure in the train pipe is transmitted to the brake cylinder through the auxiliary air cylinder, the brake cylinder is enabled to act, and the braking force of the brake cylinder changes along with the pressure change in the train pipe.
In the process of braking or relieving a train, the braking force of a brake cylinder, the pressure in a train pipe and the pressure in a main air cylinder in the process of relieving the train all change gradually along with time, the changes are collectively called as air path change conditions, the air path change conditions can reflect whether an air path system of the train is normal or not, and the change conditions of the air path in the train can be displayed to relevant working personnel such as trainees, maintainers, train managers and crews, so that the relevant working personnel of the train can master the change conditions of the air path of the train skillfully, and the abnormal conditions in the air path can be dealt with and treated timely.
However, as the demand of transportation is continuously increased, the train turnover rate is continuously improved, the traffic is tight, the arrangement of real trains for training is difficult, and the change condition in the air path in the braking or relieving process is shown to related workers of the train; the space area of the related and real cab is small, the number of students is very limited, and the display effect of the gas path change is limited; the gas circuit change situation is related to train structures such as the length of a single train section and the number of train sections of a train, and the train structures often cannot correspondingly display the train type of the train where related personnel are located during real train training, so that errors exist between the cognition of the related personnel of the train on the gas circuit change and the actual situation; finally, the gas circuit change condition is not intuitive enough, and even if a student trains on the spot in a vehicle following mode and other modes, the student still lacks systematic and intuitive cognition on the situation; in summary, the capability of normal inspection, abnormal condition judgment and processing of the gas circuit of the train related staff in work still needs to be improved.
In order to solve the above problem, the present application provides a train gas circuit simulation method, as shown in fig. 1, the method includes:
s101, constructing a simulation train model corresponding to a train according to a gas circuit structure of the train; the simulation train model comprises: a simulation knuckle and a simulation brake valve; the simulation train section comprises a simulation train pipe and a simulation brake cylinder;
s102, responding to a first control instruction aiming at the simulation train model, controlling the simulation brake valve to act, and controlling the simulation brake valve to output a brake signal to a simulation train pipe of the simulation train section;
s103, after the simulated train pipe of the simulated train section receives the brake signal, determining the pressure change condition of the simulated train pipe according to the influence of the brake signal on the pressure of the simulated train pipe;
s104, determining the braking force change condition of the simulation brake cylinder according to the influence of the pressure in the simulation train pipe in the simulation train section on the braking force of the simulation brake cylinder.
The braking force of the simulated brake cylinder can also be called the pressure of the simulated brake cylinder.
According to the method, the change conditions of the braking force of the train under various control instructions are displayed through the simulated train model, the change process of the gas circuit in the train can be conveniently displayed by the train related staff, the difficulty of real train training is solved, the display field space is limited little, the number of students is large, and the display effect of the gas circuit change is guaranteed; the change condition of the gas circuit is very visual, and after the train related workers are trained by the simulation method, the change condition of the gas circuit can be specifically and visually recognized, so that the normal checking, abnormal condition judging and processing capabilities of the gas circuit of the train related workers during working are improved.
The various control instructions include: when the simulated train model is in a normal condition and an abnormal condition, the simulated train section is braked independently, and when the simulated train section is relieved independently; when the simulation train model is integrally braked or relieved; the simulated train model is in a hold state, and the like.
And determining the pressure change condition of the simulated train pipe and the brake force change condition of the simulated brake cylinder corresponding to each control command for each control command.
In the step S101, a simulation train model corresponding to the train is constructed according to the gas path structure of the train; the air path structure of the simulation train model is not completely the same as the air path structure of the train, and in practice, the pressure change condition in the main reservoir, the train pipe and the brake force change condition of the brake cylinder are mainly observed, and in the braking process, the pressure in the main reservoir is unchanged, so that the air path system in the constructed simulation train model mainly comprises the train pipe and the brake cylinder so as to show the pressure change condition of the train pipe and the brake cylinder under the control instruction.
The constructed simulation train model can be in a data form, and the change of each part of the gas circuit is displayed only through data change on a display screen running the simulation train model; and an image model or an animation model of the train gas circuit system can be further constructed, and data changes are marked on the image model or the animation model to show the change condition of each part of the gas circuit.
The built simulation train model is mainly related to the train model, and comprises parameters such as the length and the model of a train pipe of a train gas circuit structure, the model of a main air reservoir, the model of a brake cylinder, the number of train sections and the like, so that the built simulation train model is consistent with the train of each model, corresponding display is carried out on the model of the train where related workers are located during display or training, and errors between cognition and actual conditions of the related workers of the train on gas circuit change are reduced.
Because the types of the trains are relatively fixed, and the structure of the train in each type of train is also relatively fixed, a plurality of types of simulated train sections, simulated main air cylinders and simulated brake valves corresponding to the simulated main air cylinders can be preset;
determining the model of a real train to be simulated and the number n of connected train sections in series in the process of constructing a simulation train model corresponding to the train; the simulation master reservoir, the simulation brake valve and the n simulation train section modules corresponding to the real train of the model are selected and connected in series to form the simulation train model, the building speed is high, the simulation train model conforms to the gas circuit structure of the real train, and the gas circuit system can be better recognized by related workers.
In step S102, the first control command is a gear of a large brake and a gear of a small brake of the artificial brake valve, which are input from the outside, and different gears of the artificial brake valve correspond to different brake signals. The first control instruction is a plurality of control instructions, and the control instructions comprise braking, speed reduction and relieving; the speed reduction comprises the step of reducing the speed of the train to different levels and the like, so that the related working personnel of the train can comprehensively learn the gas circuit change condition in the train under various control instructions.
In step S103, after the simulated train pipe of the simulated train section receives the brake signal, the train pipe of the simulated train section is controlled to charge air or discharge air to increase or decrease the pressure in the train pipe, so that the brake cylinder changes with the pressure change in the train pipe, and the brake signal determines the target pressure reduction amount of the pressure in the train pipe. It is noted that the target amount of depressurization is a term commonly used in the art and does not indicate that the train pipe pressure is reduced, and when the actual pressure in the train pipe is greater than the target amount of depressurization, the actual pressure in the train pipe is reduced, whereas the actual pressure in the train pipe is increased.
When the pressure in the train pipe reaches the target decompression amount, the pressure in the train pipe stops changing, and at the same time, the braking force of the brake cylinder also stops changing.
The simulation method comprises the following steps of simulating the pressure change condition of the train pipe, wherein the pressure of the train pipe is in the process of changing from an initial value to a target value, and the pressure of the train pipe is at the value of each moment. The target value is determined from the brake signal received by the dummy knuckle.
In step S104, determining a braking force variation situation of the simulated brake cylinder according to an influence of the pressure in the train pipe on the braking force of the simulated brake cylinder in the simulated train section, where the braking force variation situation is: and under the control of the train pipe pressure signal, the braking force of the brake cylinder changes from an initial value to a target value, and the value of the braking force of the brake cylinder at each moment. The braking force change condition of the simulation brake cylinder is determined according to the pressure in the simulation train pipe and a preset function. The target value is determined from the brake signal received by the dummy knuckle.
Determining the pressure in the train pipe and the braking force change condition of the simulation brake cylinder of the simulation train model with different structures according to the influence of the braking signal on the pressure in the train pipe and the braking force of the simulation brake cylinder in the simulation train section; the simulation train model with different structures comprises: the simulation bus bar is a single bus bar and the simulation bus bar is a plurality of bus bars.
When the simulated train section is a single train section, determining the pressure in the train pipe of the simulated train model and the braking force change condition of the simulated brake cylinder under different braking signals respectively: the different braking signals include: a separate brake signal and a separate mitigation signal.
When the braking signal is specifically an individual braking signal, determining a braking force variation condition of a pressure simulation brake cylinder in the simulation train pipe according to the influence of the braking signal on the pressure in the simulation train pipe in the simulation train section and the braking force of the simulation brake cylinder, specifically comprising:
calculating a target decompression amount of the pressure in the simulation train pipe and a target braking force increment of the simulation brake cylinder according to the single braking signal; the target brake force increment is the brake force which should be increased by the brake cylinder under the control of the single pressure brake signal;
and determining the pressure change condition in the simulated train pipe and the brake force change condition of the simulated brake cylinder according to a preset function, and showing the value of the pressure in the simulated train pipe and the value of the brake force of the simulated brake cylinder corresponding to the pressure at each moment in the process of changing the pressure in the simulated train pipe to the target decompression amount.
When the pressure signal is a separate release signal, determining the pressure in the train pipe and the braking force variation condition of the simulation brake cylinder according to the influence of the pressure signal on the pressure in the train pipe in the simulation train section and the braking force of the simulation brake cylinder, and specifically comprising:
calculating a target decompression amount of the pressure in the simulation train pipe and a target braking force decrement of the simulation brake cylinder corresponding to the single braking pressure signal according to the single relieving signal; the target brake force decrement is the brake force which should be reduced by the brake cylinder under the control of the single pressure relieving signal;
and determining the pressure in the simulation train pipe and the braking force change condition of the simulation brake cylinder according to a preset function.
When the constructed simulation train model comprises a plurality of simulation train sections, after receiving the braking signal, a simulation train pipe of the preset simulation train section comprises:
determining the pressure change condition of the simulated train pipe in each simulated train section according to the influence of the brake signal on the pressure of the simulated train pipe in each simulated train section;
and determining the braking force change condition of the simulation brake cylinder in each simulation train section according to the influence of the pressure in the simulation train pipe in each simulation train section on the braking force of the simulation brake cylinder in the simulation train section.
When the constructed simulation train model comprises a plurality of simulation train sections, the corresponding first control instruction of the simulation train model can be wholly braked or wholly relieved.
As shown in fig. 2, when the simulated train model performs overall braking, determining the pressure change condition of the simulated train pipe in each simulated train section according to the influence of the braking signal on the pressure of the simulated train pipe in each simulated train section includes:
s201, calculating the target decompression amount of the train pipe of each simulated train section according to the braking signal;
s202, determining a simulated train section to be ventilated in the simulated train model according to the structure of the simulated train model;
s203, controlling the pressure in the simulated train pipe of the simulated train section to be ventilated to be reduced to the target pressure reduction amount according to a preset pressure change rule;
s204, in the process that the pressure in the simulated train pipe of the simulated train section which needs to be ventilated is reduced to the target decompression amount, repeating the following steps until the pressure of the simulated train pipe of each simulated train section is reduced to the target decompression amount so as to determine the pressure change condition in each simulated train pipe:
s205, judging whether the pressure in the simulation train pipe of each simulation train section is larger than the pressure in the simulation train pipes of the adjacent simulation train sections on the two sides of the simulation train section;
s206, if the pressure in the simulation train pipe of the simulation train section is at least larger than the pressure in the simulation train pipe of the simulation train section adjacent to one side of the simulation train section, reducing the pressure in the simulation train pipe of the simulation train section according to a preset pressure change rule.
When the pressure in the simulation train pipe changes, the braking force of the brake cylinder corresponding to the simulation train pipe also changes.
In this embodiment, the preset pressure variation rule is as follows: determining the numerical value of the train pipe of the simulated train section at each moment, which is required to be reduced compared with the last moment, according to a preset function; when the pressure in the simulation train pipe of the simulation train section is only larger than the pressure in the simulation train section adjacent to one side of the simulation train section, the pressure reduction in the simulation train pipe is a numerical value calculated according to a preset function; when the pressure in the simulation train pipe of the simulation train section is larger than the pressure in the simulation train section adjacent to the two sides of the simulation train section, the decrement of the pressure in the simulation train pipe is double of the numerical value.
In some embodiments, the decrement of the pressure in the train pipe when the pressure in the simulated train pipe of the simulated train section is only larger than the simulated train section adjacent to one side of the simulated train section and larger than the simulated train sections adjacent to two sides of the simulated train section can also be directly calculated through a preset function.
As shown in fig. 3, when the simulation train model is integrally released, determining the pressure change condition of the simulation train pipe in each simulation train section according to the influence of the braking signal on the pressure of the simulation train pipe in each simulation train section includes:
s301, calculating the target decompression amount of the train pipe of each simulated train section according to the braking signal;
s302, determining a simulated train section which is required to be inflated in the simulated train model according to the structure of the simulated train model;
s303, controlling the pressure in the simulated train pipe of the simulated train section to be inflated to increase to the target decompression amount according to a preset pressure change rule;
s304, in the process that the pressure in the simulated train pipe of the simulated train section which is to be inflated is increased to the target decompression amount, repeating the following steps until the pressure of the simulated train pipe of each simulated train section is increased to the target decompression amount so as to determine the pressure change condition in each simulated train pipe;
s305, judging whether the pressure in the simulation train pipe of each simulation train section is smaller than the pressure in the simulation train pipes of the simulation train sections adjacent to the two sides of the simulation train section;
s306, if the pressure in the simulation train pipe of the simulation train section is at least smaller than the pressure in the simulation train pipe of the simulation train section adjacent to one side of the simulation train section, increasing the pressure in the simulation train pipe of the simulation train section according to a preset pressure change rule.
When the pressure in the simulation train pipe changes, the braking force of the brake cylinder corresponding to the simulation train pipe also changes.
In this embodiment, the preset pressure variation rule is as follows: determining the value of the train pipe of the simulated train section at each moment, which needs to be increased compared with the last moment, according to a preset function; when the pressure in the simulation train pipe of the simulation train section is only larger than the pressure in the simulation train section adjacent to one side of the simulation train section, the pressure increment in the simulation train pipe is a numerical value calculated according to a preset function; when the pressure in the simulation train pipe of the simulation train section is larger than the pressure in the simulation train section adjacent to the two sides of the simulation train section, the increment of the pressure in the simulation train pipe is double of the value.
In some embodiments, the increment of the pressure in the train pipe when the pressure in the simulated train pipe of the simulated train section is only larger than the simulated train section adjacent to one side of the simulated train section and larger than the simulated train section adjacent to two sides of the simulated train section can also be directly calculated through a preset function.
The train management system has the advantages that the simulation train management system is complex in simulation of multiple sections of train sections in a train model, pressure change conditions in a train pipe are different for different train types, the number of the train sections is different for the same train type, the sections for air inflation and air exhaust are different, the pressure change conditions in the train pipe are also different, and traditional training is difficult for train related workers to perfectly recognize the pressure change conditions; therefore, the embodiment of the application also shows the change conditions of the pressure of the train pipe of the train and the braking force of the brake cylinder of the train in the whole train braking and the whole train relieving respectively when the train section in the simulation train model is multi-section, so that the cognition of the relevant train workers on the change condition of the gas circuit is further enriched, particularly the cognition of the relevant train workers on the change condition of the pressure in the train pipe of the train with the relevant model, and the capability of normal checking and abnormal condition judgment and processing of the gas circuit of the relevant train workers during working is further improved.
In this embodiment, the simulated train model further includes a simulated main reservoir;
when the train model is relieved, after the simulated train pipe of the simulated train section receives the brake signal and determines the pressure change condition of the simulated train pipe according to the influence of the brake signal on the pressure of the simulated train pipe, the method further comprises the following steps: and determining the pressure change condition in the simulated main reservoir according to the pressure change condition of the simulated train pipe.
The total reservoir pressure can be reduced when the train is relieved and is used for charging the train pipe and the auxiliary reservoir, so that the total reservoir pressure is reduced when the train pipe pressure is increased, and the pressure change condition in the simulated total reservoir can be determined according to the pressure change condition of the simulated train pipe; the amount of pressure drop in the total reservoir increases proportionally as the number of vehicle knots increases. Meanwhile, when the pressure in the main air cylinder is reduced to a certain value, the air compressor can be automatically activated to work, and then the pressure of the main air cylinder can rise. When the pressure of the train pipe is reduced, the pressure of the total air cylinder cannot be changed.
Therefore, when the simulated train sections of the simulated train model are in multiple sections, the pressure change condition in the simulated total reservoir is determined according to the pressure change condition of each section of the simulated train pipe.
The embodiment of the application further shows the pressure change condition in the master reservoir when the simulation train model is relieved, and further enriches the cognition of train related workers on the gas circuit change condition.
The train gas circuit simulation method in the embodiment of the application further includes: responding to a fourth control instruction aiming at the simulation train model, and controlling the simulation train model to be in a holding state so that a simulation master air cylinder, a simulation train pipe and a simulation brake cylinder of the simulation train model are in a holding state;
determining the pressure change conditions of the simulation main air cylinder, the simulation train pipe and the simulation brake cylinder when the simulation train model is in a holding state according to the pressure reduction rules of the simulation main air cylinder, the simulation train pipe and the simulation brake cylinder of the simulation train model; and the pressure drop rule is determined according to the air tightness of the simulation main air cylinder, the simulation train pipe and the simulation brake cylinder.
In the embodiment of the application, the pressure drop rule is a preset pressure drop function, and the pressure drop function can determine the pressure drop values in the simulation main reservoir, the simulation train pipe and the simulation brake cylinder at each moment.
The total reservoir pressure, the train pipe pressure and the brake cylinder pressure are spontaneously reduced due to airtightness when being maintained, so that the simulation train model is further demonstrated to maintain the pressure change condition in the total reservoir, and the cognition of train related workers on the gas circuit change condition is further enriched.
In the embodiment of the application, some abnormal conditions in the train gas circuit system are simulated and displayed through the simulation train model, so that the cognition of train related workers on the abnormal conditions of the gas circuit is enriched.
As shown in fig. 4, the train gas circuit simulation method further includes:
s401, constructing a simulation train model corresponding to a train according to a gas circuit structure of the train; the simulation vehicle section also comprises a simulation angle cock, a simulation cut cock and a connecting hose;
s402, responding to a second control instruction aiming at the simulation train model, and controlling the simulation train section to have a fault condition; the fault condition includes at least one of: closing the simulated angle cock, closing the simulated cut cock and disconnecting the connecting hose;
s403, responding to a first control instruction aiming at the simulated train model by the simulated train section in the fault condition, controlling the simulated brake valve to act, and controlling the simulated brake valve to output a brake signal to a simulated train pipe of the simulated train section;
s404, after the simulated train pipe of the simulated train section receives the brake signal, determining the pressure change condition of the simulated train pipe under the fault condition according to the influence of the brake signal on the pressure of the simulated train pipe;
s405, determining braking force change information of the simulation brake cylinder under the fault condition according to the influence of the pressure of the simulation train pipe in the simulation train section on the braking force of the simulation brake cylinder.
When the constructed simulated train model comprises a plurality of simulated train sections, determining the fault change conditions of the pressure of the simulated train pipe in each simulated train section and the braking force of the simulated brake cylinder according to the influence of the braking signal on the pressure of the simulated train pipe in each simulated train section and the braking force of the simulated brake cylinder under the abnormal condition; the method comprises the following steps:
responding to a third control instruction aiming at the simulation train model, and controlling the train model to generate an abnormal condition; the abnormal conditions of the train model are as follows: the fault condition of at least one simulated vehicle section occurs;
the train model in the abnormal condition responds to a first control instruction aiming at the simulation train model, controls the simulation brake valve to act, and controls the simulation brake valve to output a brake signal to a simulation train pipe of a preset simulation train section;
after the simulated train pipe of the preset simulated train section receives the brake signal, determining the pressure change condition of the simulated train pipe in each simulated train section of the train model in the abnormal condition according to the influence of the brake signal on the pressure of the simulated train pipe in each simulated train section;
and according to the influence of the pressure in the simulation train pipe in each simulation train section on the braking force of the simulation brake cylinder in the simulation train section, the braking force change condition of the simulation brake cylinder in each simulation train section of the train model in the abnormal condition is obtained.
The simulation train model can simulate other gas circuit abnormal conditions such as train pipe gas leakage and the like besides the abnormal conditions such as simulation angle cock closing, simulation cutoff cock closing, simulation angle cock and simulation cutoff cock closing, abnormal disconnection of a connecting hose and the like.
In the embodiment of the application, the functions for calculating the pressure changes of the main reservoir, the train pipe and the brake cylinder in various states of the gas circuit system are obtained through real data of a real train in operation corresponding to the simulated train model.
The structure and parameters of the main reservoir, the train pipe and the brake cylinder are fixed for a specific vehicle type, so that the function for calculating the pressure change can be calculated according to a table look-up table or a function image without using a complex formula.
The following table one is an example table for calculating the change in rail pressure as a look-up table:
watch 1
Figure BDA0003228291020000181
In the table, the unit kPa is shown, the number in the table represents the pressure change in unit time, the unit time may be 10ms, or may be other values, and it should be determined according to the actual situation that when the simulated train model is actually used to display the gas circuit change, a smaller pressure interval should be used to achieve a better simulation effect.
In this embodiment, the determined gas path change condition required in the simulation method mainly includes:
the simulation knuckle determines the braking force change condition of the brake cylinder according to the received pressure signal;
when the simulation train section is used for independent braking, the pressure of a train pipe and the braking force of a brake cylinder change;
when the simulation train section is independently relieved, the pressure of a train pipe and the braking force of a brake cylinder change;
when the simulation train model is wholly braked or relieved, the pressure change condition in a train pipe is detected;
when the simulated train model is relieved, the pressure change condition in the main air reservoir;
when the simulation train model is in a holding state, simulating the pressure change conditions of a main air reservoir, a simulation train pipe and a simulation brake cylinder;
and when the simulation train model carries out fault simulation, simulating the pressure of a train pipe and the braking force change condition of the simulation brake cylinder.
Therefore, more than one function is needed to calculate the pressure change, for example, when the simulated train model is in a holding state, the pressure drop condition of the simulated main reservoir, the simulated train pipe and the simulated brake cylinder due to airtightness is very small in variation amount each time (the drop per minute under the normal condition of the pressure of the main reservoir must be less than 10kPa), so that the drop amount can be calculated by a specific function every second or even every 10 seconds, and the gas circuit change condition is obviously different from the pressure change condition in the gas circuit when the whole train is braked or relieved; in the process of relieving the whole vehicle once, under the control of a braking signal, the main air cylinder, the train pipe and the brake cylinder need three different functions for calculation. Different functions are used under different conditions, so that the simulation method can accurately show various pressure change conditions in the gas circuit system.
When the simulation of the gas circuit change condition under the condition is carried out by using the function corresponding to each condition, the function (which can be a table) is corrected at any time according to the comparison between the test data during the simulation and the collected real data of the real train, so that the simulation method can accurately display the pressure change condition in the gas circuit system, and the workers related to the train can accurately recognize the gas circuit change condition.
The embodiment of the present application further provides a train gas circuit simulation device, as shown in fig. 5, the device includes:
the building module 501 is configured to build a simulation train model corresponding to a train according to a gas path structure of the train; the simulation train model comprises: a simulation knuckle and a simulation brake valve; the simulation train section comprises a simulation train pipe and a simulation brake cylinder;
a control module 502, configured to respond to a first control instruction for the simulated train model, control the action of the simulated brake valve, and control the simulated brake valve to output a brake signal to a simulated train pipe of the simulated train section;
a first determining module 503, configured to determine a pressure change condition of the simulated train pipe according to an influence of the brake signal on the pressure of the simulated train pipe after the simulated train pipe of the simulated train section receives the brake signal;
a second determining module 504, configured to determine a braking force variation condition of the simulated brake cylinder according to an influence of the pressure in the simulated train pipe in the simulated train section on the braking force of the simulated brake cylinder.
The embodiment of the application also provides a computer-readable storage medium, wherein a computer program is stored on the storage medium, and when the computer program is executed by a processor, the steps of the train gas circuit simulation method are executed.
It can be clearly understood by those skilled in the art that, for convenience and brevity of description, the specific working processes of the system and the apparatus described above may refer to corresponding processes in the method embodiments, and are not described in detail in this application. In the several embodiments provided in the present application, it should be understood that the disclosed system, apparatus and method may be implemented in other ways. The above-described apparatus embodiments are merely illustrative, and for example, the division of the modules is merely a logical division, and there may be other divisions in actual implementation, and for example, a plurality of modules 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 of devices or modules through some communication interfaces, and may be in an electrical, mechanical or other form.
The modules described as separate parts may or may not be physically separate, and parts displayed as modules may or may not be physical units, may be located in one place, or may be distributed on a plurality of network 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 application 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 functions, if implemented in the form of software functional units and sold or used as a stand-alone product, may be stored in a non-volatile computer-readable storage medium executable by a processor. Based on such understanding, the technical solution of the present application or portions thereof that substantially contribute to the prior art may be embodied in the form of a software product stored in a storage medium and including instructions for causing a computer device (which may be a personal computer, a platform server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present application. And the aforementioned storage medium includes: various media capable of storing program codes, such as a U disk, a removable hard disk, a ROM, a RAM, a magnetic disk, or an optical disk.
The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present application, and shall be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims (10)

1. A train gas circuit simulation method is characterized by comprising the following steps:
according to the gas circuit structure of the train, constructing a simulation train model corresponding to the train; the simulation train model comprises: a simulation knuckle and a simulation brake valve; the simulation train section comprises a simulation train pipe and a simulation brake cylinder;
responding to a first control instruction aiming at the simulation train model, controlling the simulation brake valve to act, and controlling the simulation brake valve to output a brake signal to a simulation train pipe of the simulation train section;
after the simulated train pipe of the simulated train section receives the brake signal, determining the pressure change condition of the simulated train pipe according to the influence of the brake signal on the pressure of the simulated train pipe;
and determining the braking force change condition of the simulated brake cylinder according to the influence of the pressure in the simulated train pipe in the simulated train section on the braking force of the simulated brake cylinder.
2. The train gas circuit simulation method of claim 1, further comprising:
the simulation vehicle section also comprises a simulation angle cock, a simulation cut cock and a connecting hose;
responding to a second control instruction aiming at the simulation train model, and controlling the simulation train section to have a fault condition; the fault condition includes at least one of: closing the simulated angle cock, closing the simulated cut cock and disconnecting the connecting hose;
responding to a first control instruction aiming at the simulated train model by the simulated train section in the fault condition, controlling the simulated brake valve to act, and controlling the simulated brake valve to output a brake signal to a simulated train pipe of the simulated train section;
after the simulated train pipe of the simulated train section receives the brake signal, determining the pressure change condition of the simulated train pipe under the fault condition according to the influence of the brake signal on the pressure of the simulated train pipe;
and determining the braking force change information of the simulation brake cylinder under the fault condition according to the influence of the pressure of the simulation train pipe in the simulation train section on the braking force of the simulation brake cylinder.
3. The train gas circuit simulation method according to claim 1, wherein when the constructed simulation train model includes a plurality of simulation train sections, after receiving the braking signal, a simulation train pipe of a preset simulation train section includes:
determining the pressure change condition of the simulated train pipe in each simulated train section according to the influence of the brake signal on the pressure of the simulated train pipe in each simulated train section;
and determining the braking force change condition of the simulation brake cylinder in each simulation train section according to the influence of the pressure in the simulation train pipe in each simulation train section on the braking force of the simulation brake cylinder in the simulation train section.
4. The train gas circuit simulation method of claim 2, wherein when the constructed simulated train model comprises a plurality of simulated trains, the method further comprises:
responding to a third control instruction aiming at the simulation train model, and controlling the train model to generate an abnormal condition; the abnormal conditions of the train model are as follows: the fault condition of at least one simulated vehicle section occurs;
the train model in the abnormal condition responds to a first control instruction aiming at the simulation train model, controls the simulation brake valve to act, and controls the simulation brake valve to output a brake signal to a simulation train pipe of a preset simulation train section;
after the simulated train pipe of the preset simulated train section receives the brake signal, determining the pressure change condition of the simulated train pipe in each simulated train section of the train model in the abnormal condition according to the influence of the brake signal on the pressure of the simulated train pipe in each simulated train section;
and according to the influence of the pressure in the simulation train pipe in each simulation train section on the braking force of the simulation brake cylinder in the simulation train section, the braking force change condition of the simulation brake cylinder in each simulation train section of the train model in the abnormal condition is obtained.
5. The train gas circuit simulation method according to claim 3, wherein when the simulation train model performs overall braking, determining the pressure change condition of the simulation train pipe in each simulation train section according to the influence of the braking signal on the pressure of the simulation train pipe in each simulation train section comprises:
calculating the target decompression amount of the train pipe of each simulated train section according to the braking signal;
determining a simulated train section which should be ventilated in the simulated train model according to the structure of the simulated train model;
controlling the pressure in the simulated train pipe of the simulated train section to be ventilated to be reduced to the target pressure reduction amount according to a preset pressure change rule;
repeating the following steps in the process that the pressure in the simulated train pipe of the simulated train section which needs to be ventilated is reduced to the target decompression amount until the pressure of the simulated train pipe of each simulated train section is reduced to the target decompression amount so as to determine the pressure change condition in each simulated train pipe:
judging whether the pressure in the simulation train pipe of each simulation train section is greater than the pressure in the simulation train pipes of the adjacent simulation train sections on the two sides of the simulation train section;
and if the pressure in the simulated train pipe of the simulated train section is at least greater than the pressure in the simulated train pipe of the simulated train section adjacent to one side of the simulated train section, reducing the pressure in the simulated train pipe of the simulated train section according to a preset pressure change rule.
6. The train gas circuit simulation method according to claim 3, wherein when the simulated train model is integrally released, determining the pressure change condition of the simulated train pipe in each simulated train section according to the influence of the brake signal on the pressure of the simulated train pipe in each simulated train section comprises:
calculating the target decompression amount of the train pipe of each simulated train section according to the braking signal;
determining a simulated train section which is required to be inflated in the simulated train model according to the structure of the simulated train model;
controlling the pressure in the simulated train pipe of the simulated train section to be inflated to increase to the target decompression amount according to a preset pressure change rule;
in the process that the pressure in the simulated train pipe of the simulated train section which is to be inflated is increased to the target decompression amount, repeating the following steps until the pressure of the simulated train pipe of each simulated train section is increased to the target decompression amount so as to determine the pressure change condition in each simulated train pipe:
judging whether the pressure in the simulation train pipe of each simulation train section is smaller than the pressure in the simulation train pipes of the simulation train sections adjacent to the two sides of the simulation train section;
and if the pressure in the simulated train pipe of the simulated train section is at least smaller than the pressure in the simulated train pipe of the simulated train section adjacent to one side of the simulated train section, increasing the pressure in the simulated train pipe of the simulated train section according to a preset pressure change rule.
7. The train gas circuit simulation method of claim 1, wherein the simulated train model further comprises a simulated master reservoir;
when the train model is relieved, after the simulated train pipe of the simulated train section receives the brake signal and determines the pressure change condition of the simulated train pipe according to the influence of the brake signal on the pressure of the simulated train pipe, the method further comprises the following steps: and determining the pressure change condition in the simulated main reservoir according to the pressure change condition of the simulated train pipe.
8. The train gas circuit simulation method according to claim 7, wherein the simulated train model is controlled to be in a hold state in response to a fourth control instruction for the simulated train model so that a simulated master reservoir, a simulated train pipe and a simulated brake cylinder of the simulated train model are in a hold state;
determining the pressure change conditions of the simulation main air cylinder, the simulation train pipe and the simulation brake cylinder when the simulation train model is in a holding state according to the pressure reduction rules of the simulation main air cylinder, the simulation train pipe and the simulation brake cylinder of the simulation train model; and the pressure drop rule is determined according to the air tightness of the simulation main air cylinder, the simulation train pipe and the simulation brake cylinder.
9. The utility model provides a train gas circuit simulation device which characterized in that, the device includes:
the building module is used for building a simulation train model corresponding to the train according to the gas circuit structure of the train; the simulation train model comprises: a simulation knuckle and a simulation brake valve; the simulation train section comprises a simulation train pipe and a simulation brake cylinder;
the control module is used for responding to a first control instruction aiming at the simulation train model, controlling the simulation brake valve to act, and controlling the simulation brake valve to output a brake signal to a simulation train pipe of the simulation train section;
the first determining module is used for determining the pressure change condition of the simulation train pipe according to the influence of the brake signal on the pressure of the simulation train pipe after the simulation train pipe of the simulation train section receives the brake signal;
and the second determination module is used for determining the braking force change condition of the simulated brake cylinder according to the influence of the pressure in the simulated train pipe in the simulated train section on the braking force of the simulated brake cylinder.
10. A computer-readable storage medium, characterized in that the storage medium has stored thereon a computer program which, when being executed by a processor, performs the steps of the train gas circuit simulation method according to any one of claims 1 to 8.
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