CN108092864B - LEU equipment processing board and communication processing device and method thereof - Google Patents
LEU equipment processing board and communication processing device and method thereof Download PDFInfo
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- 238000004891 communication Methods 0.000 title claims abstract description 44
- 238000000034 method Methods 0.000 title claims abstract description 24
- 230000010365 information processing Effects 0.000 claims abstract description 10
- 230000008569 process Effects 0.000 claims description 14
- 230000006870 function Effects 0.000 claims description 12
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- 238000003672 processing method Methods 0.000 claims description 6
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
- H04L12/40—Bus networks
- H04L12/40006—Architecture of a communication node
- H04L12/40013—Details regarding a bus controller
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
- B61L23/00—Control, warning or like safety means along the route or between vehicles or trains
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L43/00—Arrangements for monitoring or testing data switching networks
- H04L43/10—Active monitoring, e.g. heartbeat, ping or trace-route
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/50—Network services
- H04L67/56—Provisioning of proxy services
- H04L67/568—Storing data temporarily at an intermediate stage, e.g. caching
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
- H04L12/40—Bus networks
- H04L2012/40208—Bus networks characterized by the use of a particular bus standard
- H04L2012/40215—Controller Area Network CAN
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Abstract
The application provides an LEU equipment processing board and a communication processing device and method thereof, wherein the device comprises: the configuration information processing module is used for receiving the configuration information and verifying the configuration information; the Ethernet data processing module is used for receiving data sent by the external equipment through the Ethernet interface, storing the data into the first cache queue, polling the second cache queue and sending the cache data of the second cache queue to the external equipment through the Ethernet interface; and the CAN bus data processing module is used for receiving the message data from the safety processor through the CAN bus, storing the message data into the second cache queue, polling the first cache queue and sending the cache data of the first cache queue to the safety processor through the CAN bus. The processing of the CAN bus communication protocol and the Ethernet communication protocol is incorporated into the non-safety processor, so that the complexity of the safety processor is reduced, and the safety and the reliability of the processing board are improved.
Description
Technical Field
The application relates to the field of train operation control equipment, in particular to an LEU (line terminal Unit) equipment processing board and a communication processing device and method thereof.
Background
A transponder Transmission system (BTS) is a safety Transmission system based on point information Transmission, and realizes safety information Transmission between roadside equipment or ground equipment and vehicle-mounted equipment. The transponder Transmission system comprises three basic components, namely a transponder Transmission Module (BTM), a vehicle-mounted Antenna Unit (AU), an active transponder (CB), a passive transponder (FB) and a ground electronic unit (LEU).
The LEU equipment properly isolates and separates the safety unit from the non-safety unit according to the consideration of the factors such as the independence, the safety, the maintainability and the like of the functional module, and separately designs the strong and weak signals and the digital simulation. The card-based form mainly comprises an acquisition board, a processing board (including a communication interface), an output board, a monitoring board, a switching board and a motherboard, as shown in fig. 1, wherein the acquisition board and the switching board are selected according to configuration requirements.
Disclosure of Invention
In view of this, the embodiment of the present application provides an LEU device processing board, and a communication processing apparatus and method thereof, so as to solve the technical problem in the prior art that a security processor of an LEU device is too complex.
According to an aspect of an embodiment of the present application, there is provided a communication processing apparatus of an LEU device processing board, including: the configuration information processing module is used for receiving the configuration information and verifying the configuration information; the Ethernet data processing module is used for receiving data sent by external equipment through an Ethernet interface, storing the data into a first cache queue, polling a second cache queue and sending the cache data of the second cache queue to the external equipment through the Ethernet interface; and the CAN bus data processing module is used for receiving the message data from the safety processor through the CAN bus, storing the message data into the second cache queue, polling the first cache queue and sending the cache data of the first cache queue to the safety processor through the CAN bus.
According to another aspect of embodiments of the present application, there is provided an LEU device processing board, including: the system comprises two safety processors, two non-safety processors, two CAN buses, two CAN transceivers and a signal isolator; the non-safety processor is used for communication processing of the LEU equipment processing board, transmits data with the safety processor through a CAN bus and transmits data with external equipment through an Ethernet interface;
the first safety processor and the second safety processor are respectively connected to a first CAN bus, and are connected to a CAN bus data processing module of the first non-safety processor after passing through the signal isolator and the first CAN transceiver; the first safety processor and the second safety processor are respectively connected to a second CAN bus, and are connected to a CAN bus data processing module of the second non-safety processor after passing through the signal isolator and the second CAN transceiver.
According to another aspect of the embodiments of the present application, there is provided a communication processing method of an LEU device processing board, including: checking the configuration information and starting communication processing; receiving data sent by external equipment through an Ethernet interface, storing the data into a first cache queue, polling a second cache queue and sending the cache data of the second cache queue to the external equipment through the Ethernet interface; and receiving message data from the safety processor through the CAN bus, storing the message data into a second cache queue, polling the first cache queue and sending the cache data of the first cache queue to the safety processor through the CAN bus.
The beneficial effects of the embodiment of the application include: the LEU equipment processing board isolates the safety processor from the non-safety processor, the processing of the CAN bus communication protocol and the Ethernet communication protocol is brought into the non-safety processor, and the non-safety processor is used as the communication processor of the processing board, so that the complexity of the safety processor is reduced, and the safety and the reliability of the processing board are improved.
Drawings
The above and other objects, features and advantages of the present application will become more apparent from the following description of embodiments thereof with reference to the accompanying drawings, in which:
fig. 1 is a schematic diagram of an internal architecture of an LEU device;
fig. 2 is a schematic diagram illustrating a processor architecture principle of an LEU device processing board according to an embodiment of the present application;
fig. 3 is a schematic diagram of program modules of a communication processor of an LEU device processing board according to an embodiment of the present application;
fig. 4 is a schematic diagram of a scheduling process of a communication processing method of an LEU device processing board according to an embodiment of the present application.
Detailed Description
The present application is described below based on examples, but the present application is not limited to only these examples. In the following detailed description of the present application, certain specific details are set forth in detail. It will be apparent to one skilled in the art that the present application may be practiced without these specific details. Well-known methods, procedures, components and circuits have not been described in detail so as not to obscure the present application.
Further, those of ordinary skill in the art will appreciate that the drawings provided herein are for illustrative purposes and are not necessarily drawn to scale.
Unless the context clearly requires otherwise, throughout the description and the claims, the words "comprise", "comprising", and the like are to be construed in an inclusive sense as opposed to an exclusive or exhaustive sense; that is, what is meant is "including, but not limited to".
In the description of the present application, it is to be understood that the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. In addition, in the description of the present application, "a plurality" means two or more unless otherwise specified.
The LEU equipment processing board that this application embodiment provided keeps apart safe treater and non-safe treater, brings CAN bus communication protocol and ethernet communication protocol's processing into non-safe treater, regards non-safe treater as the communication treater of processing board, has reduced the complexity of safe treater, has improved the security and the reliability of processing board.
As shown in fig. 2, the processing board includes two secure processors and two non-secure processors, and the secure processors communicate with the non-secure processors through two redundant CAN buses. The first safety processor and the second safety processor are respectively connected to a first CAN bus (CAN1), are isolated by a signal isolator and then are connected to a first CAN transceiver and then are connected to a first non-safety processor. The first safety processor and the second safety processor are respectively connected to a second CAN bus (CAN2), are isolated by a signal isolator and then are connected to a second CAN transceiver and then are connected to a second non-safety processor. The non-secure processor transmits data with an external device through the ethernet.
The processing of the communication protocol of the processing board is completely incorporated into the non-safety processor, and the non-safety processor is used as the communication processor of the processing board, so that the data protocol conversion between the Ethernet and the CAN bus is realized. Fig. 3 shows a communication data processing architecture of the processing board, and an architecture of a non-secure processor as a communication processor mainly includes the following program modules.
And the configuration information processing module is used for receiving the configuration information and verifying the configuration information.
When the processing board is started, the configuration information processing module reads the configuration information from the nonvolatile memory and verifies the configuration information; if the verification is passed, the read configuration information is adopted to complete the starting; and if the verification is not passed, adopting default configuration information to complete the starting.
The configuration information includes configuration information such as an ethernet IP address, a subnet mask, a gateway address, a port number, etc.
In the running process of the non-safety processor, the configuration information processing module receives configuration information sent by the safety processor through the CAN bus and compares the configuration information with configuration information stored in the non-volatile memory; if the two are consistent, the operation is continued; and if the configuration information is inconsistent with the preset configuration information, updating the received configuration information into a nonvolatile memory, resetting, and starting by adopting the updated configuration information after resetting.
And the Ethernet data processing module is mainly used for completing the forwarding function of the Ethernet communication interface data. The Ethernet data processing module receives data sent by external equipment through the Ethernet interface and stores the data in the first buffer queue for sending to the CAN bus. And polling the second buffer queue, and if the data of the second buffer queue is not empty, sending the buffer data of the second buffer queue to the external equipment through the Ethernet interface. The data buffered in the second buffer queue comes from the CAN bus.
The external device may be a Train Control Center (TCC) or station computer interlocking (CBI) communication device or other device that can send information to the LEU device, depending on the particular application scenario.
And the CAN bus data processing module is mainly used for finishing the communication data forwarding function of the CAN bus interface. The CAN bus data processing module receives the message data from the safety processor through the CAN bus and stores the message data to the second cache queue so as to send the message data when the Ethernet processing module polls the cache data. And the CAN bus data processing module polls the first cache queue, and if the first cache queue is not empty, the cache data of the first cache queue is sent to the safety processor through the CAN bus.
The CAN bus data processing module receives message data and configuration information from the CAN bus respectively, the message data are stored in a second cache queue, and the configuration information is stored in a global cache of the non-safety processor. The second buffer queue is an independent buffer area special for storing CAN bus data, and the first buffer queue is an independent buffer area special for storing Ethernet data so as to ensure the forwarding of the CAN bus and the Ethernet data.
The framework of the non-secure processor further comprises a log information processing module, which is used for caching log information generated in the operation process and sending the log information to a monitoring board of the LEU equipment through a Universal Asynchronous Receiver Transmitter/Transmitter (UART).
The architecture of the non-secure processor further includes an auxiliary function module for performing clock management, device self-check, and watchdog functions.
The Ethernet data processing module and the CAN bus data processing module receive corresponding data in an interrupt mode, and the auxiliary function module also receives clock information through clock interrupt, so that the programming of a program is facilitated and simplified, and the efficiency of a non-safety processor is improved.
The communication processing program of the non-safety processor adopts the design ideas of embedding, layering and sub-modules to periodically process data. It does not use operating system, so it can be designed into front-background mode, that is, it uses a wireless loop to periodically schedule each task in main function. The time sequence scheduling process is shown in fig. 4, and each task has its own trigger condition; if the condition is satisfied, the call is carried out, and if the condition is not satisfied, the call is suspended and the execution is not carried out.
In the communication processing method for executing the program, in the process from reading the configuration information to starting the self-checking, if the program is started, the configuration information is read from the nonvolatile memory and is checked; if the verification is passed, the read configuration information is adopted to complete the starting; and if the verification is not passed, adopting default configuration information to complete the starting. If the program is in the running process, receiving the configuration information issued by the safety processor through the CAN bus, and comparing the configuration information stored in the nonvolatile memory; if the two are consistent, the operation is continued; and if the configuration information is inconsistent with the preset configuration information, updating the received configuration information into a nonvolatile memory, and starting by adopting the updated configuration information after resetting.
In the periodic data processing process, the Ethernet data processing module receives data sent by external equipment through an Ethernet interface, stores the data into a first cache queue, polls a second cache queue and sends the cache data of the second cache queue to the external equipment through the Ethernet interface; the CAN bus data processing module receives message data from the safety processor through the CAN bus and stores the message data to the second cache queue, polls the first cache queue and sends the cache data of the first cache queue to the safety processor through the CAN bus. In addition, the auxiliary management module receives clock information through clock interrupt to complete clock management; and the log information processing module caches the log information generated in the running process and sends the log information to a monitoring board of the LEU equipment through the UART. Tasks such as CAN bus data transmission, Ethernet data transmission, configuration verification, log processing and the like are triggered and processed in a circular scheduling mode.
Those skilled in the art will appreciate that embodiments of the present application may be provided as a method, apparatus (device), and so that the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a program product embodied on one or more available storage media (including, but not limited to, disk storage, CD-ROM, optical storage, etc.) having the program code embodied therein.
The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (devices) and program products according to embodiments of the application. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by program instructions. These program instructions may be provided to a processor of an embedded processor or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These program instructions may also be stored in a readable memory that can direct a programmable data processing apparatus to function in a particular manner, such that the instructions stored in the readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These program instructions may also be loaded onto a programmable data processing apparatus to cause a series of operational steps to be performed on the programmable apparatus to produce a implemented process such that the instructions which execute on the programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims (10)
1. An LEU device handling plate, comprising: the system comprises two safety processors, two non-safety processors, two CAN buses, two CAN transceivers and a signal isolator; the non-safety processor is used for communication processing of the LEU equipment processing board, transmits data with the safety processor through a CAN bus and transmits data with external equipment through an Ethernet interface;
the first safety processor and the second safety processor are respectively connected to a first CAN bus, and are connected to a CAN bus data processing module of the first non-safety processor after passing through the signal isolator and the first CAN transceiver; the first safety processor and the second safety processor are respectively connected to a second CAN bus, and are connected to a CAN bus data processing module of the second non-safety processor after passing through the signal isolator and the second CAN transceiver.
2. A communication processing apparatus applied to the LEU device processing board of claim 1, comprising:
the configuration information processing module is used for receiving the configuration information and verifying the configuration information;
the Ethernet data processing module is used for receiving data sent by external equipment through an Ethernet interface, storing the data into a first cache queue, polling a second cache queue and sending the cache data of the second cache queue to the external equipment through the Ethernet interface;
and the CAN bus data processing module is used for receiving the message data from the safety processor through the CAN bus, storing the message data into the second cache queue, polling the first cache queue and sending the cache data of the first cache queue to the safety processor through the CAN bus.
3. The communication processing apparatus according to claim 2, wherein the communication processing apparatus further comprises:
and the log information processing module is used for caching log information generated in the running process and sending the log information to a monitoring board of the LEU equipment through the UART.
4. The communication processing apparatus according to claim 2, wherein the communication processing apparatus further comprises:
and the auxiliary function module is used for completing clock management, equipment self-checking and watchdog functions.
5. The communication processing apparatus of claim 2, wherein the configuration information processing module is further configured to:
reading configuration information from the nonvolatile memory at startup and verifying the configuration information; if the verification is passed, the read configuration information is adopted to complete the starting; if the verification is not passed, the starting is finished by adopting default configuration information;
receiving configuration information issued by a safety processor through a CAN bus in the running process, and comparing the configuration information stored in a nonvolatile memory; if the two are consistent, the operation is continued; and if the configuration information is inconsistent with the preset configuration information, updating the received configuration information into a nonvolatile memory, and starting by adopting the updated configuration information after resetting.
6. The communication processing apparatus according to claim 2, wherein the ethernet data processing module and the CAN bus data processing module receive data in an interrupt manner.
7. The communication processing apparatus according to claim 2, wherein the external device is a train control center or a station computer-linked communication device.
8. A communication processing method applied to the LEU device processing board of claim 1, comprising:
checking the configuration information and starting communication processing;
receiving data sent by external equipment through an Ethernet interface, storing the data into a first cache queue, polling a second cache queue and sending the cache data of the second cache queue to the external equipment through the Ethernet interface; and receiving message data from the safety processor through the CAN bus, storing the message data into a second cache queue, polling the first cache queue and sending the cache data of the first cache queue to the safety processor through the CAN bus.
9. The communication processing method according to claim 8, wherein the method further comprises:
and the log information generated in the running process is cached and sent to a monitoring board of the LEU equipment through the UART.
10. The communication processing method of claim 8, wherein checking configuration information and initiating communication processing comprises:
reading configuration information from the nonvolatile memory at startup and verifying the configuration information; if the verification is passed, the read configuration information is adopted to complete the starting; if the verification is not passed, the starting is finished by adopting default configuration information;
receiving configuration information issued by a safety processor through a CAN bus in the running process, and comparing the configuration information stored in a nonvolatile memory; if the two are consistent, the operation is continued; and if the configuration information is inconsistent with the preset configuration information, updating the received configuration information into a nonvolatile memory, and starting by adopting the updated configuration information after resetting.
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| CN110834655B (en) * | 2018-08-17 | 2021-11-05 | 中车株洲电力机车研究所有限公司 | Train data transmission method, system, medium and equipment |
| CN109795283A (en) * | 2018-12-15 | 2019-05-24 | 阿尔特汽车技术股份有限公司 | A kind of Air Condition Compressor for Electric Vehicle control method based on two-way CAN bus |
| CN110376876B (en) * | 2019-07-19 | 2022-09-23 | 北京交大思诺科技股份有限公司 | Double-system synchronous safety computer platform |
| CN112532583A (en) * | 2020-10-30 | 2021-03-19 | 浙江工业大学 | Method for realizing service under CAN bus environment |
| CN114244878B (en) * | 2021-12-15 | 2024-04-26 | 上海励驰半导体有限公司 | Device distributed access system and method in heterogeneous multi-core environment |
| CN115001963B (en) * | 2022-05-05 | 2024-01-05 | 武汉光迅信息技术有限公司 | Information configuration method and device based on multi-configuration storage communication equipment |
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