CN113978437B - Train braking force distribution method and system - Google Patents
Train braking force distribution method and system Download PDFInfo
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- CN113978437B CN113978437B CN202111413770.5A CN202111413770A CN113978437B CN 113978437 B CN113978437 B CN 113978437B CN 202111413770 A CN202111413770 A CN 202111413770A CN 113978437 B CN113978437 B CN 113978437B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T13/00—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems
- B60T13/74—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with electrical assistance or drive
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Abstract
The invention provides a train braking force distribution method and a train braking force distribution system, wherein the method comprises the following steps: determining the state of a Traction Control Unit (TCU) of a train according to a train network control and management system (TCMS); if the TCU is in a fault state, distributing the total braking force of the train to a Brake Control Unit (BCU) of the train based on the TCMS; and if the TCU is in a normal state, distributing the total braking force of the train to the BCU and the TCU respectively based on the TCMS. The system performs the method. The invention aims at different running working conditions of the train and realizes the calculation and distribution of the total braking force of the train based on the train TCMS network control, thereby realizing better automatic driving and control subsystems of the train, reducing transmission time delay and lightening bus load.
Description
Technical Field
The invention relates to the technical field of rail transit, in particular to a train braking force distribution method and system.
Background
In the development process of urban rail transit technology such as subway train technology, on one hand, the subway train network communication capacity is stronger, the TCMS network can realize the synchronization, coordination and reliable traction and brake control of the whole train, realize the networking communication and resource sharing of all functional equipment of the whole train, improve the maintenance capacity of the train and reduce the maintenance intensity; on the other hand, the control and operation of the train subsystems are more refined, simplified and integrated, the functional requirements of each system of the train are higher and higher, and meanwhile, the equipment installation space is smaller and smaller, which means that the functional management of the train traction control system has higher requirements.
The existing urban rail vehicle traction control method mainly has the following problems: the network control can not be implemented, which tends to lag behind the trend of technology development; the traction system is relatively independent, the framework is bloated, the control is complex, and the reliability of the control is difficult to ensure.
Disclosure of Invention
The train braking force distribution method and the train braking force distribution system are used for solving at least one problem in the prior art, and aim at different running working conditions of a train, the total braking force of the train is calculated and distributed based on train TCMS network control, so that a better automatic driving and control subsystem of the train is realized, the transmission time delay is reduced, and the bus burden is lightened.
The invention provides a train braking force distribution method, which comprises the following steps:
determining the state of a Traction Control Unit (TCU) of a train according to a train network control and management system (TCMS);
if the TCU is in a fault state, distributing the total braking force of the train to a Brake Control Unit (BCU) of the train based on the TCMS;
if the TCU is in a normal state, respectively distributing the total train braking force to the BCU and the TCU based on the TCMS;
wherein the BCUs include a BCU of a motor train and a BCU of a trailer.
According to the train braking force distribution method provided by the invention, the total train braking force is determined by the following method:
determining the maximum common braking force of the train according to the train braking level, the train load and the maximum braking deceleration of the train received by the TCMS;
and determining the total braking force of the train according to the maximum common braking force and a preset proportional coefficient.
According to the train braking force distribution method provided by the invention, if the TCU is in a fault state, the method for distributing the total train braking force to the brake control unit BCU of the train based on the TCMS comprises the following steps:
sending a trigger substitute brake command to a BCU of the motor train based on a Vehicle Control Unit (VCU) in the TCMS, and distributing a first fixed air pressure braking force to the BCU of the motor train;
distributing a second fixed pneumatic brake force to a BCU of the trailer based on the VCU;
wherein the first fixed pneumatic brake force and the second fixed pneumatic brake force are both determined from the total train brake force.
According to the train braking force distribution method provided by the invention, if the TCU is in a normal state, the step of distributing the total train braking force to the BCU and the TCU respectively based on the TCMS comprises the following steps:
respectively determining the pneumatic braking force required to be applied by the BCU of the trailer and the BCU of the motor train and the electric braking force distributed to the TCU based on the electric braking capacity value of the TCU and the total train braking force acquired by the TCMS after the TCMS is delayed by a first network;
based on the actual value of the electric braking force sent by the TCU received after the TCMS is delayed by a second network and delayed by a credit acquisition, determining the actual value of the air pressure braking force distributed to the BCU of the trailer and the BCU of the motor car after the TCMS is delayed by a third network;
and after the delay of a fourth network, distributing the actual value of the air pressure braking force to the BCU of the trailer and the BCU of the motor train unit based on the TCMS.
According to the train braking force distribution method provided by the invention, if the TCU is in a normal state, the total train braking force is distributed to a brake control unit BCU of the train based on the TCMS, and the method further comprises the following steps:
if the train is in a parking braking stage, increasing a preset slope of air pressure braking force and distributing the air pressure braking force to a BCU (body control unit) of the motor train unit and a BCU of the trailer respectively, and reducing the total braking force of the train according to the preset slope and distributing the total braking force to the TCU;
and if the train is in a parking stage, distributing the total braking force of the train to the BCU of the motor train and the BCU of the trailer.
According to the train braking force distribution method provided by the invention, the train is determined in the parking braking stage by the following modes:
and if the BCU of the bullet train receives the parking brake signal sent by the VCU and the running speed of the train is less than or equal to a first preset value, determining that the train is in the parking brake stage.
According to the train braking force distribution method provided by the invention, the train is determined in the stopping stage by the following modes:
and if the running speed of the train is less than or equal to a second preset value and the handle of the driver is located at the braking position, determining that the train is in the parking stage.
The present invention also provides a train braking force distribution system, comprising: the system comprises a state determining module, a first distributing module and a second distributing module;
the state determining module is used for determining the state of a traction control unit TCU of the train according to a train network control and management system TCMS;
the first distribution module is used for distributing the total braking force of the train to a Brake Control Unit (BCU) of the train based on the TCMS if the TCU is in a fault state;
the second distribution module is used for distributing the total train braking force to the BCU and the TCU respectively based on the TCMS if the TCU is in a normal state;
wherein the BCUs include a BCU of a motor train and a BCU of a trailer.
The invention also provides an electronic device, which comprises a memory, a processor and a computer program stored on the memory and capable of running on the processor, wherein the processor executes the program to realize the steps of the train braking force distribution method.
The present invention also provides a non-transitory computer-readable storage medium having stored thereon a computer program which, when executed by a processor, implements the steps of the train braking force distribution method as any one of the above.
The present invention also provides a computer program product comprising a computer program which, when executed by a processor, carries out the steps of the train braking force distribution method as described in any one of the above.
The train braking force distribution method and the train braking force distribution system provided by the invention realize the calculation and distribution of the total braking force of the train based on the train TCMS network control aiming at different running working conditions of the train, thereby realizing a better automatic driving and control subsystem of the train, reducing the transmission time delay and lightening the bus burden.
Drawings
In order to more clearly illustrate the technical solutions of the present invention or the prior art, the drawings needed for the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and those skilled in the art can also obtain other drawings according to the drawings without creative efforts.
FIG. 1 is a schematic flow chart of a train braking force distribution method provided by the present invention;
FIG. 2 is a schematic diagram of a train total braking force distribution structure provided by the invention;
FIG. 3 is a schematic timing diagram of a service braking mode of a train according to the present invention;
FIG. 4 is a schematic structural diagram of a train braking force distribution system provided by the present invention;
fig. 5 is a schematic physical structure diagram of an electronic device provided in the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. 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.
The invention provides a train braking force distribution method, which is essentially a train traction system function fusion and implementation method based on a train network control and management system (TCMS), can realize the coordination control of a whole train and the resource sharing among various equipment of the train based on the TCMS network control, combines the functions of train traction characteristic and braking characteristic control, traction force and electric brake calculation and distribution, whole train speed calculation, traction instruction and request and the like with a vehicle integrated network platform, reduces the whole burden of the system, saves calculation power, is convenient for better automatic driving of the train, and is specifically realized as follows:
fig. 1 is a schematic flow chart of a train braking force distribution method provided by the invention, and as shown in fig. 1, the method comprises the following steps:
s1, determining the state of a Traction Control Unit (TCU) of a train according to a train network control and management system (TCMS);
s2, if the TCU is in a fault state, distributing the total braking force of the train to a brake control unit BCU of the train based on the TCMS;
s3, if the TCU is in a normal state, distributing the total braking force of the train to the BCU and the TCU respectively based on the TCMS;
wherein, the BCU comprises a BCU of a motor train and a BCU of a trailer.
It should be noted that the execution subject of the method may be a computer device.
Optionally, determining the state of a traction control unit TCU of the train according to a train network control and management system TCMS, wherein the TCMS adopts 3 types of strategies of monitoring, controlling and managing each subsystem of the train, and is mainly embodied as collecting information of each subsystem and evaluating the state of equipment; corresponding to different working conditions, outputting control signals such as traction and braking instructions and air conditioner temperature regulation according to the established requirements, and requiring the subsystem to respond; and evaluating and displaying the faults of each subsystem, and recording data such as the running mileage, the running time, the energy consumption and the like of the train.
The design of the train network control and management system TCMS mainly depends on a Train Communication Network (TCN) control architecture, wherein a Vehicle Control Unit (VCU) is a main device, other subsystems (such as an auxiliary control unit ACU, a traction control unit TCU and a brake control unit BCU) are slave devices, the VCU and the subsystems are communicated by adopting the Ethernet, and the TCP protocol is followed.
Because the braking force of the train is distributed through the braking system, the difference value often exists between the requested value and the actual exerted value of the electric braking force, the situation that the brake shoe is abraded due to the misdelivery of the air brake is caused, and the braking efficiency is influenced due to the repeated transmission of the command.
Therefore, the train network control and management system TCMS is used to calculate and distribute the total braking force of the train, specifically:
according to the working condition state of a traction brake unit TCU of the train determined by the TCMS, if the TCU of the train is in a fault state, distributing the calculated total braking force of the train to a brake control unit of the train based on the TCMS; if the TCU of the train is in a normal state, calculating the electric braking force distributed to the TCU of the train and the air pressure braking force distributed to the BCU of the train according to the total braking force of the train based on the TCMS, respectively distributing the air pressure braking force to the BCU of the trailer of the train and the BCU of the motor train, and distributing the electric braking force to the TCU of the train.
The train braking force distribution method provided by the invention is used for realizing the calculation and distribution of the total braking force of the train based on the train TCMS network control aiming at different running working conditions of the train, thereby realizing a better automatic driving and controlling subsystem of the train, reducing the transmission time delay and lightening the bus burden.
Further, in one embodiment, the total train braking force is determined by:
determining the maximum common braking force of the train according to the train braking level, the train load and the maximum braking deceleration of the train received by the TCMS;
and determining the total braking force of the train according to the maximum common braking force and a preset proportionality coefficient.
Optionally, in the control of the traction process of the train, such as a tram, based on the TCMS as the master, the train operation is affected by the traction force Ft and the holding brake force Fb, and the holding brake force Fb is obtained by multiplying the maximum common brake force by a corresponding proportionality coefficient and is sent to the traction system by the TCMS.
Wherein the maximum common braking force: the train is a fixed value in order to meet the braking force applied corresponding to the maximum braking deceleration, and the fixed value is directly set in the debugging process of the train, and the maximum common braking force is obtained by multiplying the train load by the maximum braking deceleration.
Holding braking force Fb: the maximum common braking force is multiplied by a corresponding proportionality coefficient, wherein the proportionality coefficient is artificially set in an engineering debugging stage (the reason for adopting the calculation mode is that the force generating units of the two braking forces are consistent). The physical meaning of the brake force maintaining is the air brake force applied by the train when the train stops so as to maintain the train at a standstill, the value is a fixed value, and the debugging stage is directly set.
As shown in fig. 2, the TCMS calculates the total braking force required by the train and distributes the air pressure braking force according to the braking level, the train load, the maximum braking deceleration of the train, and the preset proportionality coefficient, and the traction system calculates and preferentially applies the electric brake according to the command transmitted from the TCMS.
Wherein, the braking level: the grade corresponding to the train brake pull rod is the highest grade corresponding to the maximum brake deceleration, and is 50% grade position when 50% of the maximum deceleration, and so on.
The train braking force distribution method provided by the invention calculates the total braking force demand required to be applied by the train based on the TCMS, improves the deep fusion of the traction system and the TCMS, and lays a foundation for distributing the train total braking force based on the TCMS and shortening the train braking response time.
Further, in an embodiment, the step S2 may specifically include:
s21, sending a trigger substitute brake command to a BCU of the motor car based on a vehicle control unit VCU in the TCMS, and distributing a first fixed air pressure brake force to the BCU of the motor car;
s22, distributing the second fixed air pressure braking force to a BCU of the trailer based on the VCU;
and the first fixed air pressure braking force and the second fixed air pressure braking force are determined according to the total braking force of the train.
Alternatively, referring to FIG. 2, the TCMS monitors traction system electric brake application in real time and sends a time delay to the brake control unit T-BCU of the trailer (Tp 03) that requires supplemental pneumatic brake application. Because the brake systems of the Mc vehicles (Mc 01 and Mc 03) at two ends of the vehicle are simple and do not have a real-time regulation function on air pressure brake force, when a common brake is applied to the train and 2 traction control units TCUs of the Mc vehicle simultaneously report abnormal electric brake state signals, the vehicle control unit VCU sends a trigger substitute brake command to an M-BCU (brake control unit of a motor train) and applies a first fixed air pressure brake force, at the moment, the supplementary air pressure brake force sent to the T-BCU needs to be corrected, and specifically, the supplementary air pressure brake force (namely, a second air pressure brake force) sent to the T-BCU is determined according to the total brake force of the train and the first fixed air pressure brake force applied to the brake control unit BCU of the motor train.
During braking, the TCMS gives a designated value to the electric brake and monitors the electric brake force application condition of the traction system in real time, and the traction system feeds back the actual electric brake force application value to the TCMS (the process can be understood as real-time communication between the TCMS and the traction system), so that the air brake force (total brake force-actual electric brake force value of the train) needing to be supplemented is obtained.
The train braking force distribution method provided by the invention distributes the total train braking force based on the TCMS, shortens the train braking response time and braking distance, and improves the reliability and safety of train operation.
Further, in an embodiment, the step S3 may specifically include:
s31, respectively determining the air pressure braking force required to be applied by the BCU of the trailer and the BCU of the motor train and the electric braking force distributed to the TCU based on the electric braking capability value of the TCU and the total train braking force acquired by the TCMS after the TCMS is delayed by the first network;
s32, determining the actual values of the air pressure braking force distributed to the BCU of the trailer and the BCU of the motor train after the delay of the third network based on the actual value of the electric braking force sent by the TCU received by the TCMS after the delay of the second network and the delay of the credit acquisition;
and S33, after time delay of a fourth network, distributing the actual value of the air pressure braking force to the BCU of the trailer and the BCU of the motor train unit based on the TCMS.
Optionally, as shown in fig. 3, when the TCU is in a normal state, the TCMS acquires a brake level of a handle of the driver, acquires a brake level signal after acquiring time (for example, t 1) by a hard line, starts to calculate a train braking force demand, and sends the brake level to the traction system by the TCMS; after the first network delay (for example, t 2), the TCMS obtains the electric braking capacity value of a traction system (namely TCU), and the value is used for predicting the air pressure braking force required to be applied by a braking system; after the second network delay (for example, t 3) and the message collection delay (for example, t 4), the TCMS acquires the actual value of the electric braking force of the traction system; after the third network delay (for example, T5), TCMS calculates to obtain an actual air pressure braking force demand (train total braking force-electric braking force actual value), and sends the air pressure braking force demand (namely, the air pressure braking force actual value) to the braking systems (T-BCU and M-BCU) after the fourth network delay (for example, T6); after the pneumatic brake is idle and the application time (such as t 7), the brake system completes the pneumatic brake force demand sent by the TCMS until the subsequent command changes or the maintenance brake is entered.
After the air pressure braking force demand instruction is sent, the air brake does not correspond immediately, an initial preparation time t0, namely the idle running time, exists, the air braking force gradually increases to reach the TCMS demand value (the actual value of the air pressure braking force), and the corresponding time of the increasing process is the application time t7.
According to the train braking force distribution method provided by the invention, the braking force required by the train is calculated through the TCMS, and the air pressure braking force is distributed to the braking system according to the electric braking force value exerted by the traction system, so that the train braking instruction and the braking requirement can be quickly responded, and the braking performance requirement can be met.
Further, in an embodiment, step S3 may further specifically include:
s34, if the train is in a parking braking stage, increasing a preset slope of the air pressure braking force and respectively distributing the air pressure braking force to the BCU of the motor train and the BCU of the trailer, and reducing the total braking force of the train according to the preset slope and distributing the total braking force to the TCU;
and S35, distributing the total braking force of the train to the BCU of the motor train and the BCU of the trailer if the train is in the parking stage.
Further, in one embodiment, the train being in the parking brake phase is determined by:
and if the BCU of the motor train receives the parking brake signal sent by the VCU and the running speed of the train is less than or equal to a first preset value, determining that the train is in a parking brake stage.
Further, in one embodiment, the train is in a stop phase is determined by:
and if the running speed of the train is less than or equal to the second preset value and the handle of the driver is at the braking position, determining that the train is in a parking stage.
Alternatively, referring to fig. 2, when the brake system of the bullet train receives the parking brake signal sent by the VCU and when the train speed is less than or equal to a first preset value (e.g., 6 km/h), the train enters a parking brake phase, the preset slope of the air pressure brake force is increased and distributed to the M-BCU and the T-BCU, respectively, and the total brake force of the train is reduced according to the preset slope and distributed to the TCU.
When the train enters a parking brake stage, the electric brake force is gradually reduced, and the air brake force is gradually increased, so that the purposes are as follows: after the train stops, the air brake is used as a braking force (namely the train stops and steps on the brake, and the train is not electrified, so that the train is safe and reliable). And the electric braking force decreasing slope is consistent with the air braking force increasing slope (to avoid bumping), the preset slope is a fixed slope, and the value is selected by the train debugging stage.
After the electric/pneumatic brake switching point, the traction system sends an electric brake force quit signal to the TCMS, the TCMS sends the signal to the M-BCU and the T-BCU in real time, the traction system quits the electric brake force application after delaying for 300ms, the T-BCU applies the brake force according to the train requirement, and the M-BCU applies the brake force according to a fixed value.
When the running speed of the train is less than or equal to a second preset value (for example, 1 km/h), and the handle of the driver is at the braking position, or the TCMS judges that the speed of the train is 0, the TCMS outputs a command of keeping the brake application, and distributes the total braking force of the train to the BCU of the motor train and the BCU of the trailer.
The train braking force distribution method provided by the invention combines the train traction characteristic and braking characteristic control, traction force and electric braking calculation and distribution function and the vehicle integrated network platform based on TCMS network control, can quickly respond to train braking instructions and braking requirements, and improves the overall flexibility of a train system while meeting the braking performance requirement.
The train braking force distribution system provided by the invention is described below, and the train braking force distribution system described below and the train braking force distribution method described above can be correspondingly referred to each other.
Fig. 4 is a schematic structural diagram of a train braking force distribution system provided by the present invention, as shown in fig. 4, including: a status determination module 410, a first assignment module 411, and a second assignment module 412;
the state determining module 410 is configured to determine a state of a traction control unit TCU of the train according to the train network control and management system TCMS;
the first distribution module 411 is used for distributing the total braking force of the train to a brake control unit BCU of the train based on the TCMS if the TCU is in a fault state;
the second distribution module 412 is used for distributing the total train braking force to the BCU and the TCU respectively based on the TCMS if the TCU is in a normal state;
wherein, the BCU comprises a BCU of a motor train and a BCU of a trailer.
The train braking force distribution system provided by the invention is used for realizing the calculation and distribution of the total braking force of the train based on the train TCMS network control aiming at different running working conditions of the train, thereby realizing a better automatic driving and controlling subsystem of the train, reducing the transmission time delay and lightening the bus burden.
Further, in an embodiment, the state determining module 410 may be further specifically configured to:
determining the maximum common braking force of the train according to the train braking level, the train load and the maximum braking deceleration of the train received by the TCMS;
and determining the total braking force of the train according to the maximum common braking force and a preset proportionality coefficient.
The train braking force distribution system provided by the invention calculates the total braking force demand required to be applied by the train based on the TCMS, improves the deep fusion of the traction system and the TCMS, and lays a foundation for distributing the total braking force of the train based on the TCMS and shortening the train braking response time.
Further, in an embodiment, the first distribution module 411 may specifically include:
the first distribution submodule is used for sending a trigger substitute braking instruction to a BCU of the motor train based on a vehicle control unit VCU in the TCMS and distributing fixed air pressure braking force to the BCU of the motor train;
a second distribution sub-module for distributing supplemental pneumatic brake power to the BCU of the trailer based on the VCU;
wherein, the fixed air pressure braking force and the supplementary air pressure braking force are determined according to the total braking force of the train.
The train braking force distribution system provided by the invention distributes the total train braking force based on the TCMS, shortens the train braking response time and braking distance, and improves the reliability and safety of train operation.
Further, in an embodiment, the second allocating module 412 may be further specifically configured to:
respectively determining the air pressure braking force required to be applied by the BCU of the trailer and the BCU of the motor train and the electric braking force distributed to the TCU based on the electric braking capability value of the TCU and the total train braking force acquired after the TCMS is delayed by the first network;
based on the actual value of the electric braking force sent by the TCU received after the TCMS is delayed by the second network and the signal collecting delay, the actual value of the air pressure braking force distributed to the BCU of the trailer and the BCU of the motor car is determined after the TCMS is delayed by the third network;
and after the delay of the fourth network, distributing the actual value of the air pressure braking force to the BCU of the trailer and the BCU of the motor train unit based on the TCMS.
According to the train braking force distribution system provided by the invention, the braking force required by the train is calculated through the TCMS, and the air pressure braking force is distributed to the braking system according to the electric braking force value exerted by the traction system, so that the train braking instruction and the braking requirement can be quickly responded, and the braking performance requirement can be met.
Further, in an embodiment, the second allocating module 412 may specifically include:
the third sub-module is used for increasing the preset slope of the air pressure braking force and respectively distributing the air pressure braking force to the BCU of the motor car and the BCU of the trailer if the train is in a parking braking stage, and reducing the total braking force of the train according to the preset slope and distributing the total braking force to the TCU;
and the fourth sub-module is used for distributing the total braking force of the train to the BCU of the motor train and the BCU of the trailer if the train is in a parking stage.
The train braking force distribution system provided by the invention combines the train traction characteristic and braking characteristic control, traction force and electric braking calculation and distribution function and the vehicle integrated network platform based on TCMS network control, can quickly respond to train braking instructions and braking requirements, and improves the overall flexibility of the train system while meeting the braking performance requirements.
Fig. 5 is a schematic physical structure diagram of an electronic device provided in the present invention, and as shown in fig. 5, the electronic device may include: a processor (processor) 510, a communication interface (communication interface) 511, a memory (memory) 512 and a bus (bus) 513, wherein the processor 510, the communication interface 511 and the memory 512 complete mutual communication through the bus 513. Processor 510 may call logic instructions in memory 512 to perform the following method:
determining the state of a Traction Control Unit (TCU) of a train according to a train network control and management system (TCMS);
if the TCU is in a fault state, distributing the total braking force of the train to a Brake Control Unit (BCU) of the train based on the TCMS;
if the TCU is in a normal state, respectively distributing the total braking force of the train to the BCU and the TCU based on the TCMS;
wherein the BCUs comprise a BCU of a motor train and a BCU of a trailer.
In addition, the logic instructions in the memory may be implemented in the form of software functional units and may be stored in a computer readable storage medium when sold or used as a stand-alone product. Based on such understanding, the technical solution of the present invention or a part thereof which substantially contributes to the prior art may be embodied in the form of a software product, which is stored in a storage medium and includes instructions for causing a computer power screen (which may be a personal computer, a server, or a network power screen) 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 removable hard disk, a Read-only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and the like.
Further, the present invention discloses a computer program product comprising a computer program stored on a non-transitory computer readable storage medium, the computer program comprising program instructions which, when executed by a computer, enable the computer to perform the train braking force distribution method provided by the above-mentioned method embodiments, for example, comprising:
determining the state of a Traction Control Unit (TCU) of a train according to a train network control and management system (TCMS);
if the TCU is in a fault state, distributing the total braking force of the train to a Brake Control Unit (BCU) of the train based on the TCMS;
if the TCU is in a normal state, respectively distributing the total braking force of the train to the BCU and the TCU based on the TCMS;
wherein the BCUs comprise a BCU of a motor train and a BCU of a trailer.
In another aspect, the present invention also provides a non-transitory computer readable storage medium, on which a computer program is stored, the computer program being implemented by a processor to execute the train braking force distribution method provided in the foregoing embodiments, for example, including:
determining the state of a Traction Control Unit (TCU) of a train according to a train network control and management system (TCMS);
if the TCU is in a fault state, distributing the total braking force of the train to a Brake Control Unit (BCU) of the train based on the TCMS;
if the TCU is in a normal state, respectively distributing the total braking force of the train to the BCU and the TCU based on the TCMS;
wherein, the BCU comprises a BCU of a motor train and a BCU of a trailer.
The above-described system embodiments are merely illustrative, and 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 network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of this embodiment. One of ordinary skill in the art can understand and implement it without inventive effort.
Through the above description of the embodiments, those skilled in the art will clearly understand that each embodiment may be implemented by software plus a necessary general hardware platform, and may also be implemented by hardware. With this understanding in mind, the above-described technical solutions may be embodied in the form of a software product, which can be stored in a computer-readable storage medium, such as ROM/RAM, a magnetic disk, an optical disk, etc., and includes instructions for causing a computer power supply screen (which may be a personal computer, a server, or a network power supply screen, etc.) to execute the methods described in the embodiments or some portions of the embodiments.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (9)
1. A train braking force distribution method, characterized by comprising:
determining the state of a Traction Control Unit (TCU) of a train according to a train network control and management system (TCMS);
if the TCU is in a fault state, distributing the total braking force of the train to a Brake Control Unit (BCU) of the train based on the TCMS;
if the TCU is in a normal state, respectively distributing the total train braking force to the BCU and the TCU based on the TCMS;
wherein the BCUs comprise a BCU of a motor car and a BCU of a trailer;
if the TCU is in a normal state, respectively distributing the total train braking force to the BCU and the TCU based on the TCMS, including:
respectively determining the air pressure braking force required to be applied by the BCU distributed to the trailer and the BCU of the motor train and the electric braking force distributed to the TCU based on the electric braking capability value of the TCU and the total train braking force acquired by the TCMS after the TCMS is delayed by a first network;
determining the actual values of the air pressure braking force distributed to the BCU of the trailer and the BCU of the motor train after the third network delay based on the actual values of the electric braking force sent by the TCU received by the TCMS after the second network delay and the signal acquisition delay;
and after the delay of a fourth network, distributing the actual value of the air pressure braking force to the BCU of the trailer and the BCU of the motor train unit based on the TCMS.
2. The train brake force distribution method according to claim 1, wherein the total train brake force is determined by:
determining the maximum common braking force of the train according to the train braking level, the train load and the maximum braking deceleration of the train received by the TCMS;
and determining the total braking force of the train according to the maximum common braking force and a preset proportionality coefficient.
3. The train braking force distribution method of claim 1, wherein the distributing the total train braking force to a Brake Control Unit (BCU) of a train based on the TCMS if the TCU is in a fault state comprises:
sending a trigger substitute brake command to a BCU of the motor train based on a Vehicle Control Unit (VCU) in the TCMS, and distributing a first fixed air pressure braking force to the BCU of the motor train;
distributing a second fixed air pressure braking force to a BCU of the trailer based on the VCU;
wherein the first fixed air pressure braking force and the second fixed air pressure braking force are both determined according to the total train braking force.
4. The train braking force distribution method of claim 1, wherein if the TCU is in a normal state, the method distributes the total train braking force to a brake control unit BCU of the train based on the TCMS, further comprising:
if the train is in a parking braking stage, increasing a preset slope of air pressure braking force and distributing the air pressure braking force to a BCU (body control unit) of the motor train unit and a BCU of the trailer respectively, and reducing the total braking force of the train according to the preset slope and distributing the total braking force to the TCU;
and if the train is in a parking stage, distributing the total braking force of the train to the BCU of the motor train and the BCU of the trailer.
5. The train brake force distribution method according to claim 4, wherein the train being in the parking brake phase is determined by:
and if the BCU of the train receives a parking brake signal sent by a vehicle control unit VCU and the running speed of the train is less than or equal to a first preset value, determining that the train is in a parking brake stage.
6. The train braking force distribution method according to claim 4, wherein the train being in a stop phase is determined by:
and if the running speed of the train is less than or equal to a second preset value and the handle of the driver is located at the braking position, determining that the train is in the parking stage.
7. A train brake force distribution system, comprising: the system comprises a state determining module, a first distributing module and a second distributing module;
the state determining module is used for determining the state of a traction control unit TCU of the train according to a train network control and management system TCMS;
the first distribution module is used for distributing the total braking force of the train to a Brake Control Unit (BCU) of the train based on the TCMS if the TCU is in a fault state;
the second distribution module is used for distributing the total train braking force to the BCU and the TCU respectively based on the TCMS if the TCU is in a normal state;
wherein the BCUs comprise a BCU of a motor train and a BCU of a trailer;
if the TCU is in a normal state, respectively distributing the total train braking force to the BCU and the TCU based on the TCMS, including:
respectively determining the pneumatic braking force required to be applied by the BCU of the trailer and the BCU of the motor train and the electric braking force distributed to the TCU based on the electric braking capacity value of the TCU and the total train braking force acquired by the TCMS after the TCMS is delayed by a first network;
determining the actual values of the air pressure braking force distributed to the BCU of the trailer and the BCU of the motor train after the third network delay based on the actual values of the electric braking force sent by the TCU received by the TCMS after the second network delay and the signal acquisition delay;
and after the delay of a fourth network, distributing the actual value of the air pressure braking force to the BCU of the trailer and the BCU of the motor train unit based on the TCMS.
8. An electronic device comprising a processor and a memory storing a computer program, wherein the processor implements the steps of the train brake force distribution method according to any one of claims 1 to 6 when executing the computer program.
9. A processor-readable storage medium, characterized in that the processor-readable storage medium stores a computer program for causing a processor to execute the steps of the train brake force distribution method according to any one of claims 1 to 6.
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