WO2020000842A1

WO2020000842A1 - Cross-platform communication system for multiple units, and cross-platform passenger information communication system and method

Info

Publication number: WO2020000842A1
Application number: PCT/CN2018/113628
Authority: WO
Inventors: 魏佳; 张伟; 贾涛; 厍亚斌; 陈祥龙; 李培远
Original assignee: 中车青岛四方车辆研究所有限公司
Priority date: 2018-06-26
Filing date: 2018-11-02
Publication date: 2020-01-02
Also published as: CN108848176A

Abstract

Provided are a cross-platform communication system for multiple units, and further provided are a cross-platform passenger information communication system and method for multiple units based on the communication system. The communication system comprises a first multiple units platform and a second multiple units platform that use different communication buses, wherein a reconnection gateway is provided in a head car and/or tail car of the first multiple units platform and/or the second multiple units platform, the reconnection gateway communicates with a system controller of the two multiple units platforms, and the system controller of the multiple units platform provided with the reconnection gateway is internally provided with a protocol conversion unit for converting data between different communication buses. In the communication method for the cross-platform passenger information system for multiple units, data transfer between the two cars is conducted through the reconnection gateway, and the conversion between two different data formats is conducted through the protocol converter. The system and method provided in the present application can be applied to interconnection and intercommunication between different technology platforms, thereby realizing flexible grouping between multiple units, and improving the utilization rate of the multiple units.

Description

EMU cross-platform communication system, cross-platform passenger information communication system and method

Technical field

The present application relates to the field of communication technology, and in particular, to an EMU cross-platform communication system, a cross-platform passenger information communication system and method.

Background technique

The passenger information system, as one of the full-line networking systems of the EMU, has functions such as display inside and outside the car, automatic station reporting, radio intercom, and entertainment. From the perspective of system architecture, the passenger information system of an EMU includes a system controller, 8 compartment controllers, and terminal equipment for each compartment (inside and outside displays, telephones, etc.), among which the system controller and the compartment Controllers are called primary networks, and compartment controllers and peripherals are called secondary networks. The system architecture is shown in Figure 1.

At present, the existing short-set EMUs in China generally use 8 formations. When the passenger flow increases, two 8- formation EMUs will be reconnected to form 16 formations to improve the passenger carrying efficiency of the EMU. During the reconnection operation, the first-tier network of the two EMUs will be connected. The system controller of the master vehicle directly controls the 16 compartment controllers, and ensures that the entire passenger information system functions normally. The system controller of the slave vehicle does not perform control. Features. When reconnecting, the system architecture is shown in Figure 2.

When two rows of EMUs are assembled for reconnection, the communication problem between different EMU platforms needs to be solved. For train marshalling using the same communication bus, this problem is easy to solve, and only data forwarding is required. For example, two columns of CRH5G EMUs that also use the RS485 bus are used for marshalling. Since both use the RS485 bus, the data format is the same, and there is no need to solve the problem of data conversion between different buses. For the marshalling of EMUs using different communication buses, it is necessary to solve the problem of data communication between different buses. For example, in the CRH5G EMUs currently in large use in China, the RS485 bus is used in the primary network between the system controller of the passenger information system and the cabin controller. With the popularization of the KDZ9 EMU, its application will gradually become widespread. The passenger information system of KDZ9 EMU adopts the standard EMU platform independently developed by China, and an Ethernet bus is used between the system controller and the compartment controller.

In the prior art, EMUs can only achieve interconnection and interoperability under the same model and the same platform (RS485-RS485, Ethernet-Ethernet), but interconnection and interoperability between different platforms (RS485-Ethernet) have not yet been achieved. Based on this, the problem of cross-platform EMU communication is raised.

Summary of the invention

Aiming at the problem that the EMU platforms using different communication buses in the prior art cannot communicate after reconnection, the present application provides a cross-platform communication system for EMUs, a cross-platform passenger information communication system and method.

The technical solutions used in this application are:

An EMU cross-platform communication system includes a first EMU platform and a second EMU platform using different communication buses, a first EMU platform, and / or a head and / or trailer of a second EMU platform A reconnection gateway is set inside, the reconnection gateway communicates with the system controller of the EMU platform where it is located and the system controller of another EMU platform connected to it, and is set in the system controller of the EMU platform with the reconnection gateway There is a protocol conversion unit for data conversion between different communication buses.

As a preference, a reconnection gateway is arranged in the head car and / or the tail car of the first EMU platform.

As a preference, the reconnection gateway further communicates with each car compartment controller of the EMU platform where it is located, and each car compartment controller of another EMU platform linked to it.

An EMU cross-platform passenger information communication system includes the above-mentioned EMU cross-platform communication system.

As a preference: the protocol conversion unit includes:

Initialization information processing module: used to obtain the initial setting information of the slave vehicle EMU platform by the system controller of the master vehicle EMU platform, and after the protocol is converted, it is sent to the compartment controller of the slave EMU platform;

Initialization feedback information analysis module: used to obtain initialization information fed back from the EMU platform.

Advantageously, the protocol conversion unit further includes at least one of the following modules:

Audio processing module: Obtain the audio setting information of the master car EMU platform for the slave car EMU platform and convert the protocol and send it to the car controller of the slave EMU platform;

Display processing module: Obtain the master car EMU platform display setting information for the slave EMU platform, and after the protocol conversion, send it to the compartment controller of the slave EMU platform;

Communication processing module: Acquires the communication request information between the master EMU platform and the slave EMU platform, converts the protocol, and sends it to the cabin controller of the requested EMU platform.

A communication method for an EMU cross-platform passenger information system. Based on the above-mentioned EMU cross-platform passenger information communication system, a first EMU platform is provided with a reconnection gateway. The communication method includes the following steps: a first EMU platform and a second After the EMU platform is reconnected:

If the first EMU platform is the main vehicle, the system controller of the first EMU platform issues an execution instruction to the second EMU platform through the reconnection gateway, and is converted by the protocol conversion unit into a signal that can be recognized by the second EMU platform. To the cabin controller of the second EMU platform;

If the second EMU platform is the main vehicle, the system controller of the second EMU platform issues an execution instruction to the first EMU platform and is transmitted to the protocol conversion unit of the system controller of the first EMU platform via the reconnection gateway. After being converted into a signal recognizable by the first EMU platform, the signal is transmitted to each compartment controller of the first EMU platform.

Advantageously, the communication method further includes the following steps: the execution instruction includes a link initialization instruction;

If the first EMU platform is the main vehicle, the system controller of the first EMU platform sets the connection status and informs the protocol conversion unit. The protocol conversion unit analyzes the connection status and converts to the vehicle number of the second EMU platform. The information is transmitted to the car controller of each car of the second EMU platform via the reconnection gateway;

If the second EMU platform is the main vehicle, its system controller transmits the connection status to the protocol conversion unit of the first EMU platform via the reconnection gateway of the first EMU platform to determine the vehicles of the first EMU platform. The carriage number is transmitted to each carriage controller of the first EMU platform.

Preferably, the communication method further includes the following steps:

If the first EMU platform is the main vehicle, the reconnection gateway receives the online information fed back by the second EMU platform and transmits it to the system controller of the first EMU platform to determine the initialization status of each compartment of the second EMU platform;

If the second EMU platform is the main vehicle, the protocol conversion unit assigns a virtual address to each car of the first EMU platform. The reconnection gateway receives the query instruction of the second EMU platform and converts the unit according to the first EMU platform protocol. The feedback information determines the initialization status of each compartment controller of the first EMU platform.

Preferably, the execution instruction further includes an audio control instruction:

If the first EMU platform is the main vehicle, when the first EMU platform system controller issues an audio control command to itself, it also sets the audio control command for the second EMU platform and the audio control for the second EMU platform. After the instructions are converted by the protocol conversion unit, the instructions are sent to the controllers of the carriages of the second EMU platform via the reconnection gateway;

If the second EMU platform is the main vehicle, when the second EMU platform system controller issues an audio control command to it, it also sets the audio control command to the first EMU platform and transmits it to the protocol conversion unit via the reconnection gateway. After the protocol conversion, the system controller of the first EMU platform controls the audio switching of the first EMU platform.

Preferably, the execution instruction further includes a display control instruction:

If the first EMU platform is the main vehicle, when the first EMU platform system controller issues a display control instruction to the first EMU platform, it will inform the protocol conversion unit of the display content, and the protocol conversion unit will transfer the information to the second unit via the reconnection gateway. Controllers for each compartment of the EMU platform;

If the second EMU platform is the main vehicle, when the second EMU platform system controller issues a display control instruction to itself, the display control instruction is transmitted to the protocol conversion unit of the first EMU platform via the reconnection gateway. The instruction extracts the display information from the system controller of the first EMU platform, and transmits the display information to the controller of each compartment of the first EMU platform.

Preferably, the execution instruction further includes an internal communication instruction:

If the first EMU platform is the main vehicle, the protocol conversion unit determines the carriage number and equipment number according to the reconnection status feedback from the second EMU platform, and assigns an IP address to the equipment of the second EMU platform; for the online second EMU Group platform equipment, the protocol conversion unit initiates a connection to the equipment of the second EMU platform;

If the second EMU platform is the main vehicle, the second EMU platform polls the equipment status of the first EMU platform, and the protocol conversion unit monitors the equipment status of the first EMU platform and feeds it back to the second EMU platform.

As a preference, the leading and trailing vehicles of the first EMU platform are each provided with a reconnection gateway, further including the following steps:

If the first EMU platform is a reconnection front vehicle, the reconnection gateway in the rear vehicle performs data transmission and reception;

If the first EMU platform is a reconnected rear vehicle, the reconnected gateway in the lead vehicle performs data transmission and reception.

Compared with the prior art, the advantages and positive effects of this application are:

(1) This application provides a communication system and communication method for the connection of EMUs between different platforms of EMUs. In particular, it provides a solution for the interconnection and interoperability of passenger information systems, which can be applied to the interconnection and interconnection between different technology platforms. , To achieve flexible marshalling between EMUs and improve the utilization of EMUs.

(2) The system provided by this application fully retains and utilizes the technical features and advantages of the existing platform, and performs incremental development on the existing system, with a short development cycle, high stability, and good security.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a diagram of an in-vehicle system structure of an EMU;

FIG. 2 is a system architecture diagram of a two-row EMU combined trailer;

FIG. 3 is a schematic structural diagram of a cross-platform communication system of two EMUs in this application;

4 is a schematic diagram of a composition of a protocol conversion unit of the present application;

FIG. 5 is a cross-platform initialization flowchart of a KDZ9 EMU as a master EMU;

Figure 6 is a cross-platform audio control flowchart of the KDZ9 EMU as the master EMU;

Figure 7 is a cross-platform display control flowchart of the KDZ9 EMU as the main control end EMU;

Figure 8 is a cross-platform internal communication control flowchart of the KDZ9 EMU as the main control end EMU;

FIG. 9 is a cross-platform initialization flowchart of a CRH5G EMU as a master EMU;

FIG. 10 is a cross-platform audio control flowchart of the CRH5G EMU as the master EMU;

11 is a cross-platform display control flowchart of a CRH5G EMU as the main control end EMU;

Figure 12 is a cross-platform internal communication control flow chart of CRH5G EMU as the main control end EMU.

In the drawings: 1. The first EMU platform; 2. The second EMU platform; 3. The head car; 4. The tail car; 5. The reconnection gateway; 6. System control of the EMU platform where the reconnection gateway is located. 7. System controller of another EMU platform connected to the EMU platform where the reconnection gateway is located; 8. Protocol conversion unit; 9. Intermediate car; 81; Initial information processing module; 82; Initial feedback information analysis Module; 83, audio processing module; 84, display processing module; 85, communication processing module.

detailed description

In the following, the present application is specifically described by way of exemplary embodiments. It should be understood, however, that elements, structures, and features of one embodiment may be beneficially incorporated in other embodiments without further recitation.

In the description of this application, it should be noted that the terms “first” and “second” are used for descriptive purposes only, and cannot be understood to indicate or imply relative importance. An EMU platform includes a lead vehicle, a tail vehicle, and an intermediate vehicle disposed between the lead vehicle and the tail vehicle.

This application first provides a cross-platform communication system for an EMU, which is used for communication between train formations using different communication buses.

An EMU cross-platform communication system, with reference to FIG. 3, includes a first EMU platform 1 and a second EMU platform 2, a first EMU platform 1, and / or a second EMU platform using different communication buses. The leading vehicle 3 and / or the trailing vehicle 2 of 2 are provided with a reconnection gateway 5, and the reconnection gateway 5 communicates with the system controller 6 of the EMU platform and the system controller 7 of the opposite EMU platform, and is provided with reconnection. The system controller 6 of the EMU platform of Guan 5 is provided with a protocol conversion unit 8 (see FIG. 4) for data conversion between different communication buses. The role of the reconnection gateway 5 is to implement data forwarding between different buses at the physical level. The

system controllers

6 and 7 are used for the control of each compartment of the entire vehicle, and are usually provided in the intermediate vehicle 9.

The above-mentioned first EMU platform and second EMU platform refer to two rows of EMU platforms to be linked, and are not limited to specific models, nor does it imply the importance of EMU platforms. For example, it can be a row of KDZ9 EMUs and a row of CRH5G EMUs. The system described in this application is specifically directed to the linked communication between two train groups using different communication buses. For example, the KDZ9 EMU uses the Ethernet bus, and the CRH5G EMU uses the RS485 bus.

In addition, "the other EMU platform" should be understood as another EMU platform connected, that is, the reconnection gateway communicates with the system controller of the EMU platform it is on and the system controller of another EMU platform connected to it. ; "System controller is used for the control of each compartment of the whole car, usually set in the middle car" "full car" should be understood as an EMU platform to which the system controller belongs, so the middle car should be understood as the middle of the EMU Car (see Figure 3).

In order to avoid the modification of both the hardware and software of the two EMU platforms, as a better implementation, the reconnection gateway 5 and the protocol conversion unit 8 may be configured for only one EMU platform. For example, in this embodiment, the reconnection gateway 5 is provided only for the first EMU platform 1. In order to simplify the design, the reconnection gateway can be set only in the head or tail of a train of EMUs, but this mechanism needs to ensure that each time a reconnection is made, a car with a reconnection gateway is connected to another vehicle. Hanging end, that is, a car provided with a reconnection gateway is an end car connected to another car. Furthermore, in order to make the train connection unrestricted, a reconnection gateway may be provided in the head and tail cars of an EMU platform.

After the two EMU platforms are linked, one will be the master and the other the slave. The master car is responsible for issuing its own instructions and is responsible for issuing instructions to the slave cars. During communication, the data is relayed through the reconnection gateway and sent to the other EMU platform (that is, another EMU platform linked). The slave car is mainly responsible for receiving instructions from the master car and performing corresponding functions. The specific communication process will be described in detail later.

As described above, the reconnection gateway communicates with the system controller of the EMU platform and the system controller of the opposite EMU platform. In this case, when an EMU with a reconnection gateway is used as the master EMU platform and issues an instruction to another EMU platform (slave EMU platform) connected to it, the instruction is passed through the agreement of the reconnection gateway. After the conversion unit performs the conversion, it is sent to the system controller of the slave EMU platform, and then the system controller of the slave EMU platform controls the compartment controllers of the slave EMU platform in detail. When the EMU is used as the slave EMU platform, the instruction is issued by another EMU platform (the main EMU platform) connected to it. The instruction is first sent by the system controller of the EMU platform via the reconnection gateway. To the system controller of the slave EMU platform, after the protocol conversion unit in the system controller of the slave EMU platform performs protocol conversion, the system controller of the slave EMU platform Each compartment controller performs specific control.

However, it can also be understood that, as a more preferred implementation manner, the reconnection gateway further communicates with the car compartment controllers of the EMU platform where it is located, and the car compartment controllers of another EMU platform that is linked. This preferred embodiment corresponds to the following two states, for example:

The first state: When an EMU with a reconnection gateway is used as the master EMU platform and issues an instruction to another EMU platform (slave EMU platform) connected to it, the data reflecting the instruction has been changed by The protocol conversion unit of the master car EMU platform has undergone protocol conversion. Therefore, the instructions can be sent directly from the reconnection gateway to the controllers of each car of the slave EMU platform, thereby improving the forwarding efficiency. The controller itself cannot initiate control, and is only responsible for replying to the data required by the host vehicle EMU platform;

The second state: When an EMU with a reconnection gateway is used as a slave EMU platform, the instruction is issued by another EMU platform (the host EMU platform) linked to it, and the instruction is issued by the EMU The system controller of the platform is first sent to the system controller of the slave EMU platform via the reconnection gateway. After the protocol conversion unit in the system controller of the slave EMU platform performs the protocol conversion, it is forwarded to the slave EMU platform. Therefore, in this case, it can be understood that the reconnection gateway of the slave EMU platform communicates with the controllers of each car of the EMU platform. In the communication process for control, What works is the protocol conversion unit of the system controller of the slave car. The system controller in the slave car's EMU platform itself cannot actively initiate control, and is only responsible for replying to the data required by the host car's EMU platform.

The specific communication process will be described in detail in the following in accordance with each module in conjunction with the drawings.

The present application further provides an EMU cross-platform passenger information communication system, including the above-mentioned EMU cross-platform communication system.

The protocol conversion unit in the system controller is responsible for data conversion between two different communication buses, and specifically for the application of the passenger information system. Referring to FIG. 4, the protocol conversion unit 8 includes:

Initialization information processing module 81: used to obtain the initial setting information of the slave EMU platform by the system controller of the master EMU platform, and after the protocol conversion, send it to the compartment controller of the slave EMU platform; specific That is, when an EMU (EMU platform) with a reconnection gateway is used as the main vehicle, the initialization information is directly sent to each compartment controller, that is, the initialization information is directly converted by the initialization information processing module of the EMU platform of the main vehicle, and then directly transmitted. Sent to the car controllers of the slave car EMU platform. In this case, the data sent by the master car's EMU platform has been converted by the protocol and can be directly recognized by the car controllers of the slave car, which improves data forwarding. Efficiency, while the system controller of the slave EMU platform cannot actively initiate control at this time, and is only responsible for replying to the data required by the master EMU platform; when the EMU with the reconnection gateway (EMU platform) is the slave, Initialization information is first sent from the master vehicle to the system controller of the slave EMU platform, and then forwarded to each compartment controller by the system controller, that is, The initialization information is first sent from the system controller of the master EMU platform to the system controller of the slave EMU platform. After the protocol conversion of the initialization information processing module in the system controller is performed, the information is forwarded to the slave EMU platform. The controllers of each carriage and the system controller of the slave EMU platform cannot actively initiate control at this time, and are only responsible for replying to the data required by the master EMU platform.

Initialization feedback information analysis module 82: used to obtain initialization information fed back from the EMU platform.

The function of the initialization information processing module 81 and the initialization feedback information analysis module 82 is that the host vehicle issues an initialization instruction to the slave vehicle and receives the instruction feedback from the slave vehicle to determine whether the initialization is completed.

The main functions of the passenger information system are broadcasting and communication. Therefore, based on the application of the passenger information system, referring to FIG. 4, the protocol conversion unit further includes at least one of the following modules:

Audio processing module 83: Obtain the audio setting information of the master car EMU platform for the slave car EMU platform, convert the protocol, and send it to the cabin controller of the slave EMU platform;

Display processing module 84: Obtain display setting information of the master car EMU platform for the slave car EMU platform, and perform protocol conversion before sending it to the car controller of the slave EMU platform;

The communication processing module 85: obtains communication request information between the master car EMU platform and the slave car EMU platform, performs protocol conversion, and sends it to the cabin controller of the requested EMU platform.

In the above-mentioned setting process of the audio, display, communication and other information of the slave car, when the EMU (EMU platform) with the reconnection gateway is used as the master car, the information is directly sent to the controller of each compartment, that is, the information is transmitted by the master car. After the corresponding processing module of the group platform performs the protocol conversion, it is directly sent to the controllers of each compartment of the slave EMU platform; when the EMU with the reconnection gateway (the EMU platform) is the slave, the information is sent from the master vehicle first. To the system controller of the slave EMU platform, and then forwarded to each compartment controller via the system controller, that is, the information is first sent from the system controller of the master EMU platform to the system controller of the slave EMU platform. The corresponding processing module in the system controller converts the protocol and forwards it to the car controllers of the slave EMU platform.

Based on the above system, communication after the connection of the EMU platform between different communication buses can be completed, and in particular, the communication of the passenger information system and the setting of audio and display information can be completed.

Based on the above-mentioned EMU cross-platform passenger information communication system, the present application further provides a communication method for the EMU cross-platform passenger information system. This application will take the first EMU platform provided with a reconnection gateway as an example to explain the specific communication. method.

The communication method includes the following steps: After two rows of EMU platforms (that is, the first EMU platform and the second EMU platform) are reconnected:

If the first EMU platform is the main vehicle, the system controller of the first EMU platform issues an execution instruction to the second EMU platform through the reconnection gateway, and is converted by the protocol conversion unit into a signal that can be recognized by the second EMU platform. , Passed to the system controller of the second EMU platform via the reconnection gateway;

If the second EMU platform is the main vehicle, the system controller of the second EMU platform issues an execution instruction to the first EMU platform and is transmitted to the protocol conversion unit of the first EMU platform system controller via the reconnection gateway. After being converted into a signal recognizable by the first EMU platform, it is transmitted to each compartment controller of the first EMU platform.

Furthermore, the leading and trailing vehicles of the first EMU platform are provided with reconnection gateways. After reconnection, if the first EMU platform is the reconnecting front vehicle (that is, two rows of EMUs are reconnected and drive ahead). EMU), use the reconnection gateway in the rear vehicle to send and receive data; if the first EMU platform is the rear vehicle (that is, the two EMUs that are traveling behind after reconnecting), use the head The reconnection gateway in the car sends and receives data. This method of information transmission is conducive to ensuring the efficiency of information transmission.

The KDZ9 EMU and CRH5G EMU train formation is used as an example to illustrate the specific steps. KDZ9 EMU is equivalent to the first EMU platform, and CRH5G EMU is equivalent to the second EMU platform. CRH5G EMUs have been widely used in China. The KDZ9 EMU is a new car. The system architecture and terminal products of the Ethernet bus used by the KDZ9 EMU have mature technical solutions, and a large number of users have been cultivated. The method described in this article does not make any software or hardware changes to the CRH5G EMU. There is no change to the existing system architecture, control software architecture, terminal software and hardware of the KDZ9 EMU. In order to realize the interconnection function, an independent gateway unit (reconnection gateway) is added to the cabin controller in the hardware of the KDZ9 EMU, and an independent protocol conversion unit is added to the system controller software in software. The original technical features, system functions, communication protocols, stability and reliability of the two platforms have been kept to the maximum. The user operating habits of the two platforms remain unchanged and do not affect the user experience at all.

KDZ9 EMU reconnection gateway is only responsible for data forwarding, not data analysis and timing control, simple function and high reliability. The tasks of data analysis, protocol conversion, and timing control of different platforms are transferred to the system controller of the better-performing KDZ9 EMU, which can meet the real-time and performance requirements of the entire system when reconnecting.

The communication method further includes the following steps:

1. System initialization.

Execution instructions include linked initialization instructions;

If the first EMU platform is the main vehicle, its system controller sets the connection status and informs the protocol conversion unit. The protocol conversion unit analyzes the connection status, converts it to the vehicle number information of the second EMU platform, and reconnects The controller is passed to the car controller of each car, that is, the car controller of each car of the second EMU platform; the reconnection gateway simultaneously receives the online information fed back by the second EMU platform and passes it to the system of the first EMU platform A controller to determine an initialization state of each compartment of the second EMU platform.

If the second EMU platform is the main vehicle, its system controller transmits the connection status to the protocol conversion unit of the first EMU platform via the reconnection gateway of the first EMU platform, determines the car compartment number, and transmits it to each Car compartment controller. The protocol conversion unit assigns a virtual address to each car of the first EMU platform, the reconnection gateway receives the query instruction of the second EMU platform, and according to the initialization state of each car controller of the first EMU platform.

When the second EMU platform is the main vehicle, it should be understood that its system controller transmits the connection status to the protocol conversion unit of the first EMU platform via the reconnection gateway of the first EMU platform. The protocol conversion unit determines the first The number of each car in the first EMU platform is transmitted to the controller of each car in the first EMU platform. The protocol conversion unit assigns a virtual address to each carriage of the first EMU platform. The query command of the second EMU platform is received by the reconnection gateway, and according to the initialization status of the controllers of the carriages of the first EMU platform, after conversion by the protocol conversion unit, the query from the second EMU platform is returned by the protocol conversion unit. instruction.

Refer to FIG. 5 and FIG. 9 for specific procedures. The initialization steps will be described below with reference to FIGS. 5 and 9.

1.1KDZ9 EMU is used as the main control terminal.

It should be understood that the “master control end” appearing in the context of this application can be understood as a “master car”, that is, an EMU platform that is responsible for issuing its own instructions and is responsible for issuing instructions to the slave cars. For example, here, "KDZ9 EMU is used as the master" means "KDZ9 EMU is used as the master", which issues instructions to the CRH5G EMU as the slave. The meaning of "master" appearing elsewhere in this article is deduced by analogy and will not be described in detail.

When the KDZ9 EMU is used as the master, the initialization process is shown in Figure 5, and the specific steps are as follows:

After the main program of the system controller of the KDZ9 EMU is started, it obtains the connection status from the train network system and informs the protocol conversion unit. The protocol conversion unit can record the connection status and determine the compartments of the CRH5G EMU by the connection status. Compartment number.

The main program starts the initialization of the CRH5G EMU car controller, and the protocol conversion unit performs initialization operations, including: CRH5G EMU car controller reset, CRH5G EMU car controller query, modification, and lock of the car number. During the initialization process, the protocol conversion unit notifies the main program of the cabin controller's online status through signals. After the initialization is completed, the protocol conversion unit notifies the main program that the initialization is completed by a signal.

After the protocol conversion unit completes the initialization of the CRH5G EMU compartment controller, the main program starts the initialization of the CRH5G EMU interior display and the CRH5G EMU exterior display. The protocol conversion unit initializes the display and displays the carriage number. The protocol conversion unit has a built-in timer that periodically sends information such as car number, train number, and interval.

The main program initializes the phone.

1.2CRH5G EMU is used as the master control terminal.

When the CRH5G EMU is used as the master, the initialization process is shown in Figure 9. The specific steps in Figure 9 are as follows:

After the main program of the KDZ9 EMU system controller is started, it obtains the connection status from the train network system and informs the protocol conversion unit. The protocol conversion unit can determine the car number of each compartment of the KDZ9 EMU by the connection status.

The protocol conversion unit is a MAC address (AA: AA: AA: **) for each car controller of the KDZ9 EMU, and according to the online status of the car controller of the KDZ9 EMU, it responds to the query instructions from the CRH5G car controller. .

In the drawings, "STC" means a system controller. In Fig. 9, the step "response to the query of the car controller issued by the STC" is internal communication control, which means that the protocol conversion unit monitors the equipment status of the slave EMU platform (KDZ9 EMU platform) (that is, the KDZ9 EMU car) Controller online status), and feedback to the main car EMU platform (CRH5G EMU platform). The specific flow of internal communication control will be described in detail at point 4 below.

The protocol conversion unit receives the internal and external explicit initialization instructions from the CRH5G EMU, and sends a signal to the main program of the KDZ9 EMU, prompting the main program to display the internal and external compartment numbers. The built-in timer of the protocol conversion unit is started, and the internal and external display information is sent regularly, that is, the internal and external display information is regularly sent to the main program.

2. Audio control.

If the first EMU platform is the main vehicle, when the first EMU platform system controller issues an audio control command to itself, it also sets the audio control command for the second EMU platform and the audio control for the second EMU platform. After the instruction is converted by the protocol conversion unit, it is sent to each compartment controller of the second EMU platform via the reconnection gateway;

If the second EMU platform is the main vehicle, when the second EMU platform system controller issues an audio control command to it, it also sets the audio control command to the first EMU platform and transmits it to the protocol conversion unit via the reconnection gateway. After the protocol conversion, the system controller, that is, the system controller of the first EMU platform, controls the audio switching of the first EMU platform.

Refer to FIG. 6 and FIG. 10 for specific procedures, and the process will be discussed in detail below.

2.1KDZ9 EMU is used as the main control terminal.

When the main program of the KDZ9 EMU system controller plays public audio to the UIC (International Union of Railways) bus, it is necessary to set the audio status of the CRH5G EMU ’s cabin controller at the same time, and the protocol conversion unit controls the CRH5G EMU ’s cabin The device sends a switch command.

The KDZ9 EMU's entertainment audio switching is controlled by a separate video entertainment controller, while the CRH5G EMU's entertainment audio switching from the vehicle group is controlled by the system controller. When the KDZ9 EMU's entertainment audio is switched, the video entertainment controller needs to inform the KDZ9 EMU's system controller that audio switching is required, and then the system controller sets the audio state of the CRH5G EMU through the protocol conversion unit. The gateway is forwarded to CRH5G EMU.

It should be understood here that the KDZ9 EMU's entertainment audio switching is controlled by a separate video entertainment controller, while the CRH5G EMU's entertainment audio switching as a slave vehicle is controlled by the system controller. When the KDZ9 EMU's entertainment audio is switched, the video entertainment controller needs to inform the KDZ9 EMU's system controller that audio switching is required, and then the system controller sets the audio state of the CRH5G EMU through the protocol conversion unit. The gateway is forwarded to the cabin controller of CRH5G EMU.

The specific process is shown in Figure 6.

2.2 CRH5G EMU is used as the master control terminal.

CRH5G EMU issues audio switching instructions. The protocol conversion unit of the system controller of the KDZ9 EMU receives the audio switching instructions transmitted via the RS485 bus and retransmitted by the reconnection gateway, and notifies the system controller main program. The system controller main program controls the audio switching board switching, and Tells the video entertainment controller to switch entertainment audio. The specific process is shown in Figure 10.

3. Display control.

If the second EMU platform is the main vehicle, when the second EMU platform system controller issues a display control instruction to itself, the display control instruction is transmitted to the protocol conversion unit of the first EMU platform via the reconnection gateway. The instruction extracts the display information in the system controller and transmits it to each cabin controller. It should be understood here that, according to the converted instruction, the display information is extracted from the system controller of the first EMU platform and is transmitted to each compartment controller of the first EMU platform.

Refer to FIG. 7 and FIG. 11 for specific procedures, and the process will be discussed in detail below.

3.1KDZ9 EMU is used as the main control terminal.

Refer to Figure 7 for the specific process. When the system controller of the KDZ9 EMU changes the display information inside or outside the vehicle, it is necessary to inform the protocol conversion unit of the display content, and the CRH5G EMU display information is set synchronously through the protocol conversion unit.

It should be understood here that the display information inside or outside the vehicle is changed by the main program of the system controller of the KDZ9 EMU, and the display content is notified to the protocol conversion unit, and the CRH5G EMU display information is set synchronously through the protocol conversion unit.

In order to adapt to the difference in control logic between different platforms, the protocol conversion unit should store the fixed information such as the car number, train number, and operating interval, and send it regularly through the built-in timer.

3.2CRH5G EMU is used as the master control terminal.

When the CRH5G EMU system controller changes the display information inside or outside the car, the information will be passed to the reconnection gateway and further to the protocol conversion unit. The protocol conversion unit receives the RS485 bus (that is, the STC master of the CRH5G EMU) The display data sent by the program) is parsed to extract the display area and the display text, and the main program is notified by a signal. The main program calls the display module for display. Refer to Figure 11 for the specific process.

4. Internal communication control.

If the first EMU platform is the main vehicle, the protocol conversion unit determines the carriage number and equipment number according to the reconnection status feedback from the second EMU platform, and assigns an IP address to the equipment of the second EMU platform; for the online second EMU Group platform equipment, the protocol conversion unit initiates a connection to the system controller, that is, initiates a connection to the system controller of the second EMU platform;

Refer to FIG. 8 and FIG. 12 for specific processes, and the process will be discussed in detail below.

4.1KDZ9 EMU is used as the main control terminal.

Refer to Figure 8 for the specific process.

The protocol conversion unit determines the carriage number and equipment number of the CRH5G EMU phone according to the reconnection status, and virtually allocates IP addresses in accordance with the principles of the KDZ9 EMU platform.

For an online CRH5G EMU phone, according to its compartment number, device number, and virtual IP address, the protocol conversion unit initiates a connection to the main program according to the Ethernet communication protocol and sends a heartbeat, that is, corresponding to The program phone control module interacts.

The protocol conversion unit receives the control command of the CRH5G EMU phone by Ethernet, and converts it into the control protocol of the CRH5G EMU phone, and sends it to the CRH5G EMU car controller through the gateway.

The protocol conversion unit receives the CRH5G EMU phone request instruction through the gateway, converts it into KDZ9 EMU phone protocol data, and sends it to the main program. When there are several protocol data in the RS485 protocol corresponding to one instruction in the Ethernet protocol, the protocol conversion unit is responsible for analyzing and merging.

The telephone control module completes all logical control instructions and finally issues them to all telephone terminals through the telephone switching module.

4.2CRH5G EMU is used as the master control terminal.

Refer to Figure 12 for the specific process.

The protocol conversion unit monitors the phone status of the KDZ9 EMU. When the CRH5G EMU polls the car controller of the slave vehicle (that is, the KDZ9 EMU), the protocol conversion unit adjusts the phone status (that is, the phone status of the KDZ9 EMU) according to RS485 bus protocol is sent to the CRH5G EMU host.

The protocol conversion unit receives and analyzes the control commands from the CRH5G EMU for the slave phone, converts them into Ethernet protocol data, and sends them to the KDZ9 EMU phone.

The data communication between the protocol conversion unit and the telephone, that is, the protocol conversion unit and the telephone of the KDZ9 EMU, are performed according to the data mode of the Ethernet platform.

A request instruction of the KDZ9 EMU phone may correspond to multiple data protocols of the RS485 bus, which is completed by the protocol conversion unit.

This application provides a solution between the different platforms of the EMU, and specifically provides a cross-platform passenger information system interconnection and interconnection system solution. The RS485-Ethernet transmission of passenger information is used as an example to describe the solution process. The protocol control unit can be improved accordingly. This system can be subsequently applied to the interconnection and interoperability between different technology platforms to achieve flexible marshalling between EMUs, which can greatly improve the utilization rate of EMUs.

The above descriptions are merely preferred embodiments of the present application, and are not intended to limit the present application in other forms. Any person skilled in the art may use the disclosed technical content to change or modify the equivalent equivalents. The embodiments are applied to other fields, but as long as they do not depart from the technical solution of the present application, any simple modifications, equivalent changes, and modifications made to the above embodiments according to the technical essence of the present application still belong to the protection scope of the technical solution of the present application.

Claims

An EMU cross-platform communication system, comprising: a first EMU platform and a second EMU platform using different communication buses, the first EMU platform, and / or the second EMU platform A reconnection gateway is provided in the leading vehicle and / or the tail vehicle of the vehicle, and the reconnection gateway communicates with the system controller of the EMU platform where it is located and the system controller of another EMU platform that is connected, and the reconnection gateway is provided. A protocol conversion unit is provided in the system controller of the EMU platform of the United Gateway to convert data between different communication buses.
The cross-platform communication system for an EMU according to claim 1, wherein a reconnection gateway is provided in a head vehicle and / or a tail vehicle of the first EMU platform.
The cross-platform communication system for an EMU according to claim 1 or 2, characterized in that the reconnection gateway is further connected to each vehicle compartment controller of the EMU platform where it is located, and each of the other EMU platforms linked to each other. Car compartment controller communication.
An EMU cross-platform passenger information communication system, comprising: an EMU cross-platform communication system according to any one of claims 1 to 3.
The cross-platform passenger information communication system for an EMU according to claim 4, wherein the protocol conversion unit comprises:

Initialization information processing module: used to obtain the initial setting information of the slave vehicle EMU platform by the system controller of the master vehicle EMU platform, and perform protocol conversion before sending it to the compartment controller of the slave EMU platform;

Initialization feedback information analysis module: used to obtain initialization information fed back from the slave EMU platform.
The cross-platform passenger information communication system for an EMU according to claim 5, wherein the protocol conversion unit further comprises at least one of the following modules:

Audio processing module: obtaining audio setting information of the master car EMU platform for the slave car EMU platform, and performing protocol conversion, and sending it to the cabin controller of the slave car EMU platform;

A display processing module: acquiring display information of the master car EMU platform for the slave car EMU platform, and performing protocol conversion, and sending the information to the compartment controller of the slave car EMU platform;

The communication processing module: obtains communication request information between the master car EMU platform and the slave car EMU platform, performs protocol conversion, and sends the request to the car controller of the requested EMU platform.
The communication method of an EMU cross-platform passenger information system is based on the EMU cross-platform passenger information communication system according to any one of claims 4-6, wherein the first EMU platform is provided with a reconnection gateway, The communication method includes the following steps: after the first EMU platform and the second EMU platform are reconnected:

If the first EMU platform is the main vehicle, the system controller of the first EMU platform issues an execution instruction to the second EMU platform through a reconnection gateway, and is converted into the protocol conversion unit through the protocol conversion unit. After the signal recognizable by the second EMU platform is transmitted to the compartment controller of the second EMU platform via the reconnection gateway;

If the second EMU platform is the main vehicle, an execution instruction for the first EMU platform is issued through the system controller of the second EMU platform, and is transmitted to the first EMU via the reconnection gateway. The protocol conversion unit of the group platform system controller is converted into a signal recognizable by the first EMU platform, and then transmitted to each compartment controller of the first EMU platform.
The communication method for an EMU cross-platform passenger information system according to claim 7, wherein the communication method further comprises the following steps: the execution instruction includes a link initialization instruction;

If the first EMU platform is the main vehicle, the system controller of the first EMU platform sets a connection status and informs the protocol conversion unit that the protocol conversion unit analyzes the connection status and converts the status to the The vehicle number information of the second EMU platform is transmitted to the compartment controller of each car of the second EMU platform via the reconnection gateway;

If the second EMU platform is the main vehicle, its system controller transmits the connection status to the protocol conversion unit of the first EMU platform via the reconnection gateway of the first EMU platform, and determines the Each car compartment number of the first EMU platform is transmitted to each car compartment controller of the first EMU platform.
The communication method for an EMU cross-platform passenger information system according to claim 8, wherein the communication method further comprises the following steps:

If the first EMU platform is the main vehicle, the reconnection gateway receives the online information fed back by the second EMU platform and transmits it to the system controller of the first EMU platform to determine the first EMU platform. Initialization status of each carriage on the platform of the second EMU;

If the second EMU platform is the main vehicle, the protocol conversion unit assigns a virtual address to each car of the first EMU platform, and the reconnection gateway receives the query instruction of the second EMU platform , Determining an initialization state of each compartment controller of the first EMU platform according to feedback information of a protocol conversion unit of the first EMU platform.
The communication method for an EMU cross-platform passenger information system according to claim 7, wherein the execution instruction further comprises an audio control instruction:

If the first EMU platform is the main vehicle, when the system controller of the first EMU platform issues an audio control instruction to itself, it also sets an audio control instruction to the second EMU platform, The audio control instruction of the second EMU platform is converted by the protocol conversion unit and sent to each compartment controller of the second EMU platform via the reconnection gateway;

If the second EMU platform is the main vehicle, when the second EMU platform system controller issues an audio control instruction to itself, the audio control instruction for the first EMU platform is also set at the same time. The reconnection gateway passes to the protocol conversion unit, and after the protocol conversion, the system controller of the first EMU platform controls the audio switching of the first EMU platform.
The communication method for an EMU cross-platform passenger information system according to claim 7, wherein the execution instruction further comprises a display control instruction:

If the first EMU platform is the main vehicle, when the system controller of the first EMU platform issues a display control instruction to the first EMU platform, it informs the protocol conversion unit of the display content, and the protocol conversion unit performs information conversion. And then transmitted to each compartment controller of the second EMU platform via the reconnection gateway;

If the second EMU platform is the main vehicle, when the system controller of the second EMU platform issues a display control instruction to itself, the display instruction is transmitted to the first EMU platform via the reconnection gateway. The protocol conversion unit extracts display information from the system controller of the first EMU platform according to the converted instruction, and transfers the display information to the controllers of the carriages of the first EMU platform.
The communication method for an EMU cross-platform passenger information system according to claim 9, wherein the execution instruction further comprises an internal communication instruction:

If the first EMU platform is the main vehicle, the protocol conversion unit determines a carriage number and a device number according to the reconnection status feedback from the second EMU platform, and assigns an IP to the equipment of the second EMU platform Address; for an online second EMU platform device, the protocol conversion unit initiates a connection to the second EMU platform device;

If the second EMU platform is the main vehicle, the second EMU platform polls the device status of the first EMU platform, the protocol conversion unit monitors the device status of the first EMU platform, and Feedback to the second EMU platform.
The communication method for an EMU cross-platform passenger information system according to any one of claims 7 to 12, characterized in that a lead vehicle and a tail vehicle of the first EMU platform are provided with a reconnection gateway, further It includes the following steps:

If the first EMU platform is a reconnection front vehicle, the reconnection gateway in the rear vehicle performs data transmission and reception;

If the first EMU platform is a reconnected rear vehicle, the reconnected gateway in the lead vehicle performs data transmission and reception.