CN106487627B - RIOM and train with RIOM - Google Patents
RIOM and train with RIOM Download PDFInfo
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- CN106487627B CN106487627B CN201510530539.2A CN201510530539A CN106487627B CN 106487627 B CN106487627 B CN 106487627B CN 201510530539 A CN201510530539 A CN 201510530539A CN 106487627 B CN106487627 B CN 106487627B
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Abstract
The invention provides an RIOM and a train with the RIOM, wherein the RIOM comprises: the system comprises a power panel, a gateway panel, an input panel, an output panel and a back panel; the power panel, the gateway board, the input board and the output board are respectively connected with the back board; the back plate comprises: at least two backplane buses and a power bus; the input board and the output board are communicated with the gateway board through each backboard bus respectively; the power panel is respectively connected with the gateway board, the input board and the output board through a power bus and used for supplying power to the gateway board, the input board and the output board. According to the technical scheme provided by the invention, once one backboard bus in the RIOM is interfered, other board cards in the RIOM can also communicate through the other backboard buses, so that the problem that the whole RIOM unit fails is avoided, the stability and the reliability of the RIOM unit are improved, and the reliability of safe operation of a train is further improved.
Description
Technical Field
The invention relates to the technical field of train communication and control, in particular to an RIOM and a train with the RIOM.
Background
The Remote Input Output Module (rim) unit can be used for executing signal acquisition and outputting a control command to the execution mechanism, is an important Module in a train communication network, improves the stability and reliability of the rim unit, and can improve the reliability of safe operation of a train.
At present, the information interaction of each component in the rim unit is realized by the conventional rim unit through a backplane bus. Specifically, the input board in the RIOM Unit transmits the acquired external information to the processing module through the backplane bus, and the processed external information is transmitted to the output board in the RIOM Unit through the backplane bus and is output under the Control of a train Control Unit (VCU), so that the Control of the safe operation of the whole locomotive is realized.
However, since all boards in the RIOM unit are provided for communication through only one backplane bus in the RIOM unit, once the backplane bus is interfered, information communicated through the backplane bus is abnormal, so that the whole RIOM unit fails, and the safe operation of a train is affected.
Disclosure of Invention
The invention provides an RIOM and a train with the RIOM, which are used for solving the problem that a whole RIOM unit fails due to the fact that a back plate bus in the RIOM is interfered, and can improve the stability and reliability of the RIOM unit so as to improve the reliability of safe operation of the train.
The invention provides a RIOM, comprising: the system comprises a power panel, a gateway panel, an input panel, an output panel and a back panel; the power panel, the gateway panel, the input panel and the output panel are respectively connected with the back panel;
the back sheet, comprising: at least two backplane buses and a power bus;
the input board and the output board are communicated with the gateway board through each backboard bus respectively; the power panel is connected with the gateway panel, the input panel and the output panel through the power bus respectively and used for supplying power to the gateway panel, the input panel and the output panel.
In an embodiment of the present invention, the power strip includes: the protection and filter circuit and the power supply conversion module; the protection and filter circuit is connected with the power supply conversion module through the power supply bus; the protection and filter circuit is connected with a power supply, and the power conversion module is connected with the back plate;
the protection and filter circuit is used for filtering external interference and protecting the safety of the back plate, the gateway plate, the input plate and the output plate; the power conversion module is used for converting the power voltage provided by the power supply to the voltages required by the gateway board, the input board and the output board.
In another embodiment of the present invention, the gateway board includes: the gateway comprises a gateway external bus controller, a gateway processor and at least two gateway internal bus controllers; the number of bus controllers in the gateway is equal to that of the backplane buses;
each gateway internal bus controller is connected with the backboard through the corresponding backboard bus, the gateway processor is respectively connected with the at least two gateway internal bus controllers and the gateway external bus controller, and the gateway external bus controller is connected with an external board card through an external bus.
In the above embodiment of the present invention, the gateway external bus controller is a multifunctional vehicle bus MVB communication control circuit, and the external bus is an MVB bus.
In the above embodiment of the present invention, the gateway board further includes: a processor interface circuit;
the processor interface circuit is connected between the gateway external bus controller and the gateway processor and is used for assisting the communication between the gateway external bus controller and the gateway processor.
In the above embodiments of the present invention, the input board includes: a digital quantity input board and an analog quantity input board;
the digital quantity input board and the analog quantity input board each respectively comprise: the system comprises at least one group of input channels, an input processor and at least two input internal bus controllers; the number of the input inner bus controllers is equal to that of the back plate buses;
each input inner bus controller is connected with the backboard through the corresponding backboard bus, and the input processor is respectively connected with the at least two input inner bus controllers and the at least one group of input channels.
In the above embodiment of the present invention, the output plate includes: a digital quantity output board and an analog quantity output board;
the digital quantity output board and the analog quantity output board respectively comprise: the system comprises at least one group of output channels, an output processor and at least two output internal bus controllers; the number of the output internal bus controllers is equal to that of the back plate buses;
each output internal bus controller is connected with the backboard through the corresponding backboard bus, and the output processor is respectively connected with the at least two output internal bus controllers and the at least one group of output channels.
The invention also provides a train with RIOM, comprising: the invention provides an RIOM, a train control unit VCU and a multifunctional vehicle bus MVB; the RIOM communicates with the VCU through the MVB;
the RIOM is used for acquiring input information and outputting a control command to the VCU;
and the VCU is used for controlling the running state of the train.
According to the RIOM and the train with the RIOM, the power supply board supplies power to the gateway board, the input board and the output board through the power supply buses on the back boards, communication among the input board, the output board and the gateway board is realized through at least two back board buses, once one back board bus in the RIOM is interfered, the input board, the output board and the gateway board can also communicate through the rest back board buses, so that the phenomenon that the whole RIOM unit breaks down is solved, the stability and the reliability of the RIOM unit are improved, and further the reliability of safe operation of the train is improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a schematic structural diagram of an RIOM embodiment of the present invention;
FIG. 2 is a schematic diagram of a power strip in the RIOM of FIG. 1;
FIG. 3 is a schematic structural diagram of a gateway board in the RIOM shown in FIG. 1;
FIG. 4 is a schematic diagram of the input board of the RIOM of the present invention;
FIG. 5 is a schematic diagram of a digital quantity input board in the RIOM of the present invention;
FIG. 6 is a schematic diagram of an analog input board in the RIOM of the present invention;
FIG. 7 is a schematic diagram of the output plate of the RIOM of the present invention;
FIG. 8 is a schematic diagram of a digital output board in the RIOM of the present invention;
FIG. 9 is a schematic diagram of the structure of an analog output board in the RIOM of the present invention;
fig. 10 is a schematic structural diagram of a train with the RIOM of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are 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.
With the development of train network control technology, train communication networks have become the "nervous system" of subway trains and high-speed motor train units. A Remote Input and Output Module (RIOM) is a network device widely used in a train network topology, and its structure has the characteristics of a typical train network device. The RIOM is a network interface between a Train Control and Management System (TCMS for short) and Train non-intelligent devices, can realize data acquisition and start-stop Control operations of most non-intelligent devices (medium-voltage devices, sensor units and the like), and can be configured with I/O components of different types according to different input/output requirements of remote data of trains. Therefore, the stability and reliability of the RIOM unit are improved, and the reliability of the safe operation of the train can be improved.
However, RIOM does not exist in every Train Communication Network (TCN) topology. Partial network topologies embody remote input-output functionality, for example, the MITRAC system performs digital and analog input-output operations by designing DX and AX modules, respectively; alternatively, part of the network topology may also change in name according to the actual role of the RIOM in the Train communication network, Train Control and Management System, TCMS (Train Control and Management System, TCMS for short), e.g. in CRH3 type vehicles, RIOM is called compact input/output and intelligent peripheral terminals, respectively, depending on whether the number of input/output nodes changes. The above-described devices are all within the scope of the RIOM devices studied by the present invention.
The information interaction of all components in the RIOM unit is realized by the conventional RIOM unit through a backboard bus. Specifically, the input board in the RIOM Unit transmits the acquired external information to the processing module through the backplane bus, and the processed external information is transmitted to the output board in the RIOM Unit through the backplane bus and is output under the Control of a train Control Unit (VCU), so that the Control of the safe operation of the whole locomotive is realized. However, at present, a low-cost twisted pair is used as a transmission medium in a Control Area Network (CAN), and all board cards in the RIOM unit communicate through only one backplane bus, so that the reliability of communication cannot be ensured due to strong electromagnetic interference on a train, and the twisted pair is also prone to short circuit or open circuit fault due to physical damage, and then information communicated through the backplane bus is abnormal, which causes the fault of the whole RIOM unit, thereby affecting the safe operation of the train.
In order to solve the problems, the invention provides an RIOM and a train with the RIOM, because the back plate of the RIOM comprises at least two back plate buses and one power bus, the power supply board can supply power for the gateway board, the input board and the output board through the power bus, the input board, the output board and the gateway board can communicate through each back plate bus, once one of the back plate buses is interfered, the input board, the output board and the gateway board can communicate through the rest back plate buses, thereby solving the problem that the whole RIOM unit can be in failure, improving the stability and reliability of the RIOM unit and further improving the reliability of the safe operation of the train.
FIG. 1 is a schematic structural diagram of an RIOM embodiment of the present invention. As shown in fig. 1, the RIOM provided by the embodiment of the present invention includes: the system comprises a power panel 1, a gateway panel 2, an input panel 3, an output panel 4 and a back panel 5; wherein, the power panel 1, the gateway panel 2, the input panel 3 and the output panel 4 are respectively connected with the back panel 5; a back plate 5 comprising: at least two backplane buses 51 and one power bus 52.
Specifically, the input board 3 and the output board 4 communicate with the gateway board 2 through each backplane bus 51; the power board 1 is connected to the gateway board 2, the input board 3, and the output board 4 via a power bus 52, and supplies power to the gateway board 2, the input board 3, and the output board 4.
The backplane bus 51 may be a CAN bus, and since the CAN bus has short transmission time, low probability of interference and high transmission speed when transmitting a signal at a long distance, the present invention implements communication between the input board 3, the output board 4 and the gateway board 2 based on the CAN bus. The RIOM with the CAN bus improves the accuracy of remote input and output signal transmission, and has high real-time performance and reliable operation. Therefore, the RIOM unit provided by the invention has the advantages of simple structure, high integration level and intelligent degree, good structure and function expandability, safety and reliability.
According to the RIOM provided by the embodiment of the invention, the power supply board can supply power for the gateway board, the input board and the output board through the power supply bus on the back board, the communication among the input board, the output board and the gateway board can be realized through the at least two back board buses, once one back board bus in the RIOM is interfered, the input board, the output board and the gateway board can also communicate through the rest back board buses, so that the phenomenon that the whole RIOM unit fails is solved, the stability and the reliability of the RIOM unit are improved, and further the reliability of the safe operation of a train is improved.
Fig. 2 is a schematic structural diagram of a power board in the RIOM shown in fig. 1. As shown in fig. 2, the power panel 1 in the embodiment of the present invention includes: a protection and filter circuit 11 and a power conversion module 12. The protection and filter circuit 11 is connected with the power conversion module 12 through a power bus 52; the protection and filter circuit 11 is connected with a power supply 13, and the power conversion module 12 is connected with the backboard 5.
A protection and filter circuit 11 for filtering external interference and protecting the safety of the back board 5, the gateway board 2, the input board 3 and the output board 4; a power conversion module 12 for converting the power voltage supplied by the power supply 13 to the voltages required by the gateway board 2, the input board 3, and the output board 4.
Specifically, the power panel 1 is mainly responsible for a power conversion function, adjusts a voltage (for example, direct current 110V) provided by the train power supply 13 to a voltage (for example, direct current 5V) suitable for the requirements of each board card in the RIOM unit, and supplies power to other board cards in the RIOM unit. As shown in fig. 2, the voltage provided by the power supply 13 passes through the protection and filtering circuit 11 and then reaches the power conversion module 12, and finally, the voltage required by each board card is output to the power bus 52 on the backplane 5 to supply power to other board cards in the RIOM unit.
The power panel in the RIOM not only protects the safety of each board card in the RIOM unit under the action of the protection and filter circuit, but also filters external interference, converts the voltage provided by the power supply into proper voltage through the conversion action of the power conversion module, and lays a foundation for the normal communication of each board card in the RIOM.
Fig. 3 is a schematic structural diagram of a gateway board in the RIOM shown in fig. 1. As shown in fig. 3, the gateway board 2 in the embodiment of the present invention includes: the gateway external bus controller 21, the gateway processor 22, and at least two gateway internal bus controllers 23, and the number of the gateway internal bus controllers 23 is equal to the number of the backplane buses 51.
Specifically, each gateway internal bus controller 23 is connected to the backplane 5 through a corresponding backplane bus 51, the gateway processor 22 is connected to at least two gateway internal bus controllers 23 and the gateway external bus controller 21, respectively, and the gateway external bus controller 21 is connected to the external board 25 through the external bus 24.
The present invention is illustrated with the backplane 5 comprising two backplane buses 51 and one power bus 52, and correspondingly, the number of bus controllers 23 in the gateway is also two. Each intra-gateway bus controller 23 is connected to the backplane 5 via a corresponding backplane bus 51, thereby implementing the internal communication of the entire RIOM unit. Specifically, when the backplane bus 51 is implemented by a CAN bus, the bus controller 23 in the gateway may be a CAN communication controller TJA1050, which is an interface between a Controller Area Network (CAN) protocol controller and a physical bus, and is a standard high-speed CAN transceiver. TJA1050 may provide differential transmit capability for the bus and differential receive capability for the CAN controller.
The gateway processor 22 is connected between the gateway internal bus controller 23 and the gateway external bus controller 21, is used for controlling the gateway internal bus controller 23 and the gateway external bus controller 21, and is a key device for data processing of the gateway board 2. It should be noted that the gateway processor of the present invention is required to support at least two backplane buses, and specifically, the gateway processor 22 may adopt the latest ARM Cortex-M processor STM32F207VG, and the ARM Cortex-M series is a new generation processor that can provide a standard architecture for a wide range of technologies. Unlike other ARM processors, the Cortex-M family is a complete processor core, a standard CPU and system architecture. STM32F207VG has higher efficiency, lower dynamic power consumption, more flexible and innovative high performance peripherals and higher integration.
The gateway external bus controller 21 is connected between the external board card 25 and the gateway processor 22, and can realize information interaction between the gateway board 2 and the train control and management system TCMS.
Optionally, the gateway external bus controller 21 is a multifunctional vehicle bus MVB communication control circuit, and the external bus is an MVB bus. The MVB bus has the advantages of high transmission speed and high anti-interference capability. When the external bus 24 is an MVB bus, the gateway board 2 further includes: a processor interface circuit 26.
The processor interface circuit 26 is coupled between the gateway external bus controller 21 and the gateway processor 22 for facilitating communication between the gateway external bus controller 21 and the gateway processor 22. The Processor interface circuit 26 may be a Field-Programmable Gate Array (FPGA) interface circuit, or may also be a Digital Signal Processor (DSP) interface circuit, and controls information interaction between the gateway Processor 22 and the gateway external bus controller 21 through an address bus and a data bus provided by the Processor interface circuit.
In practical applications, the gateway external bus controller 21 may also be an RS485 communication controller MAX485 or an RS232 communication controller ST3241EBPR, and the specific components of the gateway external bus controller are not limited in the present invention, and any controller capable of implementing information interaction between the gateway board and an external system may be used. When the RS485 communication controller is adopted, the external bus is an RS485 bus, and when the RS232 communication controller is adopted, the external bus is an RS232 bus, so that the communication distance applicable to the RS485 bus and the RS232 bus is short, and the transmission speed is low.
Further, the gateway board 2 further includes: the power conversion circuit 27, the power conversion circuit 27 is respectively connected to the gateway external bus controller 21, the gateway processor 22, the at least two gateway internal bus controllers 23 and the processor interface circuit 26, and is configured to convert the voltage input from the power bus 52 to the voltage required by each device.
The RIOM provided by the invention comprises the gateway board which is the core processing equipment of the RIOM unit and can be used for realizing the management of an external bus and a back panel bus and the external interface service of a gateway external bus controller, therefore, the gateway board is an interface for accessing the RIOM unit into a TCMS system.
Fig. 4 is a schematic diagram of the composition of an input board in the RIOM of the present invention, fig. 5 is a schematic diagram of the structure of a digital quantity input board in the RIOM of the present invention, and fig. 6 is a schematic diagram of the structure of an analog quantity input board in the RIOM of the present invention. As shown in fig. 4, the RIOM, input board 3 provided by the above-mentioned embodiment of the present invention includes: a digital quantity input board 31 and an analog quantity input board 32. The digital quantity input board 31 and the analog quantity input board 32 each include: the system comprises at least one group of input channels, an input processor and at least two input inner bus controllers, wherein the number of the input inner bus controllers is equal to that of the back plate buses; each input inner bus controller is connected with the backboard through a corresponding backboard bus, and the input processor is respectively connected with at least two input inner bus controllers and at least one group of input channels.
Specifically, as shown in fig. 5, the digital quantity input board 31 includes: at least one group of digital quantity input channels 311, a digital quantity input processor 312 and at least two digital quantity input internal bus controllers 313. The number of digital quantity input internal bus controllers 313 is equal to the number of backplane buses 51; each digital input internal bus controller 313 is connected with the backboard 5 through a corresponding backboard bus, and the digital input processor 312 is respectively connected with at least two digital input internal bus controllers 313 and at least one group of digital input channels 311. At least one set of digital input channels 311 transmits the information collected from the external board 315 to the digital input processor 312 for data processing.
Each group of digital input channels 311 of the digital input board 31 shares a common input negative terminal, each input channel in each group is connected with one pin of the digital input processor 312, the acquired information is transmitted to the digital input processor 312, the digital input processor 312 is responsible for data processing of the whole digital input board 31, and once the request sending information sent by the gateway board 2 is received, the digital input board 31 sends the board acquisition information, the board software version number, the running time, the vital signal, the self-checking information and other data to the corresponding backplane bus 51 through at least two digital input internal bus controllers 313 and receives and processes the data by the gateway board 2.
Further, the digital quantity input board 31 further includes: and the power supply conversion circuit 314 is connected with the digital input processor 312 and the at least two digital input internal bus controllers 313 respectively, and is used for converting the voltage input from the power supply bus 52 into the voltage required by each device.
The digital input board 31 is mainly responsible for acquiring train signals such as lighting control, door state, high-voltage tank selection switch state, and the like, and exchanges data with the gateway board 2 through at least two backplane buses 51 of the backplane 5.
Further, as shown in fig. 6, the analog input board 32 includes: at least one analog input channel 321, an analog input processor 322, and at least two analog input internal bus controllers 323. The number of analog input internal bus controllers 323 is equal to the number of backplane buses 51; each analog input internal bus controller 323 is connected to the backplane 5 via a corresponding backplane bus, and the analog input processor 322 is connected to at least two analog input internal bus controllers 323 and at least one set of analog input channels 321, respectively. At least one analog input channel 321 transmits the information collected from the external board 325 to the analog input processor 322 for data processing.
Each input channel in each set of analog input channels 321 of the analog input board 32 is connected to one pin of the analog input processor 322, and transfers the acquired information to the analog input processor 322, the analog input processor 322 is responsible for data processing of the whole analog input board 32, and upon receiving the request transmission information transmitted from the gateway board 2, the analog input board 32 transmits the board acquisition information, the board software version number, the running time, the vital signal, the self-test information and other data to the corresponding backplane bus 51 through at least two analog input internal bus controllers 323, and receives and processes the data by the gateway board 2.
Further, the analog input board 32 includes: the power conversion circuit 324 is connected to the analog input processor 322 and the at least two analog input internal bus controllers 323, and converts the voltage input from the power bus 52 to a voltage required by each device.
The analog input board 32 is mainly responsible for collecting information such as a handle level signal, cylinder pressure, power supply and the like at a driver console, and exchanges data with the gateway board 2 through at least two backboard buses 51 on the backboard 5.
Fig. 7 is a schematic composition diagram of an output board in the RIOM of the present invention, fig. 8 is a schematic structural diagram of a digital output board in the RIOM of the present invention, and fig. 9 is a schematic structural diagram of an analog output board in the RIOM of the present invention. As shown in fig. 7, the RIOM according to the above embodiment of the present invention, the output board 4, includes: a digital quantity output board 41 and an analog quantity output board 42; the digital output board 41 and the analog output board 42 each include: the system comprises at least one group of output channels, an output processor and at least two output internal bus controllers, wherein the number of the output internal bus controllers is equal to that of the back plate buses; each output internal bus controller is connected with the backboard through a corresponding backboard bus, and the output processor is respectively connected with at least two output internal bus controllers and at least one group of output channels.
Specifically, as shown in fig. 8, the digital quantity output board 41 includes: at least one set of digital output channels 411, a digital output processor 412, at least two digital output internal bus controllers 413. The number of the digital quantity output internal bus controllers 413 is equal to that of the backplane buses 51; each digital output internal bus controller 413 is connected with the backplane 5 through a corresponding backplane bus, and the digital output processor 412 is respectively connected with at least two digital output internal bus controllers 413 and at least one group of digital output channels 411. At least one set of digital output channels 411 outputs the information processed by the digital output processor 412 to the external board 415.
Each group of digital output channels 411 of the digital output board 41 are digital output channels with completely independent isolation, and relays are used as isolation components. Each group of digital output channels 411 shares a common input positive terminal and is connected with a common terminal of the relay, a coil of the relay is connected with one pin of the digital output processor 412, the digital output processor 412 controls the output of the relay by controlling the level of the pin, once receiving the control information sent by the gateway board 2, the digital output board 41 executes the relevant control command, and simultaneously sends the data of the board software version number, the running time, the life signal, the self-checking information and the like to the corresponding backplane bus 51 through at least two digital output internal bus controllers 413 and is received and processed by the gateway board 2.
Optionally, the digital output board 41 further includes: and a power conversion circuit 414, wherein the power conversion circuit 414 is respectively connected with the digital output processor 412 and the at least two digital output internal bus controllers 413, and is used for converting the voltage input from the power bus 52 to the voltage required by each device.
The digital output board 41 is mainly responsible for start-stop control of an air conditioner, opening and closing of a passenger room door, illumination control and the like, and exchanges data with the gateway board 2 through at least two backplane buses 51 on the backplane 5.
Further, as shown in fig. 9, the analog quantity output board 42 includes: at least one group of analog quantity output channels 421, an analog quantity output processor 422 and at least two analog quantity output internal bus controllers 423. The number of the analog quantity output internal bus controllers 423 is equal to that of the backplane buses 51; each analog quantity output internal bus controller 423 is connected with the backplane 5 through a corresponding backplane bus, and the analog quantity output processor 422 is respectively connected with at least two analog quantity output internal bus controllers 423 and at least one group of analog quantity output channels 421. At least one group of analog quantity output channels 421 outputs the information processed by the analog quantity output processor 422 to the external board card 425.
Each channel in each group of analog output channels 421 of the analog output board 42 is connected with one pin of the analog output processor 422, the analog output processor 422 controls each channel to output corresponding analog quantity by controlling the voltage level of the pin, once receiving the control information sent by the gateway board 2, the analog output board 42 executes the relevant control command, and simultaneously sends the board software version number, running time, life signal, self-checking information and other data to the backplane bus 51 through at least two analog output internal bus controllers 423 to be received and processed by the gateway board 2.
Optionally, the analog output board 42 further includes: the power conversion circuit 424, the power conversion circuit 424 is connected with the analog output processor 422 and at least two analog output internal bus controllers 423 respectively, and is used for converting the voltage input from the power bus 52 to the voltage required by each device.
The present invention describes the switching process of the bus by taking the case that the backplane includes two backplane buses and the backplane bus is a CAN bus. Specifically, the invention adopts a backboard double-CAN bus complete redundancy design, adopts two sets of CAN buses, and each set comprises a bus controller, a bus driver and a bus cable. And a hot standby working mode is adopted, namely when the first CAN bus communication fails, the second CAN bus is started to communicate, and the normal operation of the system is maintained.
When the RIOM unit works normally, the first CAN bus is in a working state. And when the first CAN bus has a fault, the second CAN bus enters a working state. If the first CAN bus is detected to be in fault during power-on, the second CAN bus automatically enters a working state, so that the communication function of the whole RIOM unit CAN be ensured to be normal. Bus fault detection and bus automatic switching are key to dual bus redundancy system design.
When the dual-bus redundancy system fails, the switching of the buses can be completed by the gateway board. The first CAN bus is described as an example of a failure. When a gateway board polls a monitoring node (I/O board) through a first CAN bus, if the monitoring node does not respond, the gateway board visits the monitoring node again after a period of time, if the monitoring node still does not respond, the gateway board marks the monitoring node as a fault, then, a query frame is sent to the monitoring node through a second CAN bus, and if the monitoring node still does not respond, an alarm is given immediately, and the monitoring node is reported to have the fault; if the fault node sends out a response, the detection node is not in fault but in fault of the first CAN bus, the bus controller of the first CAN bus is reset, an error recovery data frame is tried to be sent to the gateway board through the first CAN bus, and if the fault node succeeds, the gateway board removes the fault mark of the monitoring node and informs the monitoring node to continue to use the first CAN bus for communication; if the transmission is still unsuccessful after N times of attempts, the monitoring node informs the gateway board of the failure of error recovery of the first CAN bus through the second CAN bus, and sends alarm information to prompt a driver of the occurrence of a fault.
According to the RIOM provided by the invention, the RIOM unit is designed through double-backplane bus redundant communication, so that the stability of the RIOM unit is improved, the RIOM has obvious advantages in a train network control system, and is a future development direction of the rail transit industry.
Fig. 10 is a schematic structural diagram of a train with the RIOM of the present invention. As shown in fig. 10, the present invention provides a train with rim, comprising: the RIOM 101, the train control unit VCU 102, and the utility vehicle bus MVB 103 described in fig. 1-9. The RIOM 101 communicates with the VCU 102 via the MVB 103. The RIOM 101 is used for collecting input information and outputting a control command to the VCU 102; and the VCU 102 is used for controlling the running state of the train.
The detailed structure and implementation principle of the RIOM in the present invention are the same as those in fig. 1 to 9, and the details are described in the above embodiments and are not repeated herein.
According to the RIOM and the train with the RIOM, the at least two backboard buses are arranged on the backboard, when one backboard bus in the RIOM is interfered and the transmitted information is abnormal, the input board, the output board and the gateway board can also communicate through the rest backboard buses, so that the problem that the whole RIOM unit fails is solved, the stability and the reliability of the RIOM unit are improved, and the reliability of safe operation of the train is improved.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (7)
1. An RIOM, comprising: the system comprises a power panel, a gateway panel, an input panel, an output panel and a back panel; the power panel, the gateway panel, the input panel and the output panel are respectively connected with the back panel;
the back sheet, comprising: at least two backplane buses and a power bus;
the input board and the output board are communicated with the gateway board through each backboard bus respectively; the power panel is respectively connected with the gateway panel, the input panel and the output panel through the power bus and is used for supplying power to the gateway panel, the input panel and the output panel;
the power strip includes: the protection and filter circuit and the power supply conversion module; the protection and filter circuit is connected with the power supply conversion module through the power supply bus; the protection and filter circuit is connected with a power supply, and the power conversion module is connected with the back plate;
the protection and filter circuit is used for filtering external interference and protecting the safety of the back plate, the gateway plate, the input plate and the output plate; the power conversion module is used for converting the power voltage provided by the power supply to the voltages required by the gateway board, the input board and the output board.
2. The RIOM of claim 1, wherein the gateway board comprises: the gateway comprises a gateway external bus controller, a gateway processor and at least two gateway internal bus controllers; the number of bus controllers in the gateway is equal to that of the backplane buses;
each gateway internal bus controller is connected with the backboard through the corresponding backboard bus, the gateway processor is respectively connected with the at least two gateway internal bus controllers and the gateway external bus controller, and the gateway external bus controller is connected with an external board card through an external bus.
3. The RIOM of claim 2, wherein the gateway external bus controller is a Multifunction Vehicle Bus (MVB) communication control circuit and the external bus is an MVB bus.
4. The RIOM of claim 3, wherein the gateway board further comprises: a processor interface circuit;
the processor interface circuit is connected between the gateway external bus controller and the gateway processor and is used for assisting the communication between the gateway external bus controller and the gateway processor.
5. The RIOM according to claim 2, wherein said input board comprises: a digital quantity input board and an analog quantity input board;
the digital quantity input board and the analog quantity input board each respectively comprise: the system comprises at least one group of input channels, an input processor and at least two input internal bus controllers; the number of the input inner bus controllers is equal to that of the backboard buses;
each input inner bus controller is connected with the backboard through the corresponding backboard bus, and the input processor is respectively connected with the at least two input inner bus controllers and the at least one group of input channels.
6. The RIOM of claim 5, wherein the output board comprises: a digital quantity output board and an analog quantity output board;
the digital quantity output board and the analog quantity output board respectively comprise: the system comprises at least one group of output channels, an output processor and at least two output internal bus controllers; the number of the output internal bus controllers is equal to that of the back plate buses;
each output internal bus controller is connected with the backboard through the corresponding backboard bus, and the output processor is respectively connected with the at least two output internal bus controllers and the at least one group of output channels.
7. A train having a RIOM, comprising: the RIOM, train control unit VCU and utility vehicle bus MVB of any one of claims 1-6; the RIOM communicates with the VCU through the MVB;
the RIOM is used for acquiring input information and outputting a control command to the VCU;
and the VCU is used for controlling the running state of the train.
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109901547B (en) * | 2017-12-11 | 2021-07-16 | 中车永济电机有限公司 | Vehicle management control VCU cabinet |
| CN110040158A (en) * | 2019-05-05 | 2019-07-23 | 中车青岛四方车辆研究所有限公司 | Track train traction braking level control method |
| CN111831507B (en) * | 2020-05-31 | 2022-08-23 | 中车永济电机有限公司 | TCMS-RIOM control unit with safety level design |
| CN112278021B (en) * | 2020-10-22 | 2022-07-19 | 交控科技股份有限公司 | Train remote input and output module and processing method |
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