A centralized system management board card and method for a locomotive traction control unit

Abstract

The application provides a centralized system management board card of a locomotive traction control unit, which is used for local maintenance monitoring of the traction control unit and comprises a processor unit, a CAN unit, a storage unit, a cache unit, a switch unit and an Ethernet unit; the CAN unit, the storage unit, the cache unit, the switch unit and the Ethernet unit are respectively connected with the processor unit in data communication. The centralized system management board card is loaded into the traction control unit, provides a standard Ethernet communication bus interface externally, externally expands independent Ethernet units, switch units, storage units and CAN units, realizes train Ethernet communication, fault storage reading and centralized upgrade and download function of the traction control unit single board program of the single board, reduces the types of the maintenance board cards of the traction control unit, effectively reduces the maintenance cost, improves the stability of the traction control unit device, solves the problem of complex field maintenance of the existing locomotive traction control unit, and is low in cost and reliable in performance.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of vehicle communication technology, in particular to a centralized system management board card and method for locomotive traction control unit. BACKGROUND

[0002] Train Communication Network (TCN) is a communication network for transmitting control signals, detection information, diagnosis information and other data between various onboard devices in each carriage and between each carriage.

[0003] To realize the international standard of onboard data communication, for example, the Train Communication Network special standard established by the International Electrotechnical Commission, that is, IEC61375-1 TCN standard, TCN is divided into a wire train bus (WTB) system connecting each movable dynamically formed carriage and a multifunction vehicle bus (MVB) system connecting various onboard devices in the carriage. The WTB bus is used for data transmission between different traction units, and physically uses two redundant twisted pairs. The transmission rate of the WTB bus is 1Mbit / s. The gateway between two traction units is connected through the WTB bus, and data exchange is carried out through the gateway and the MVB bus of the unit. The vehicle bus uses the MVB bus, and physically uses a two-pair redundant twisted pair bus structure. The transmission rate is 1.5Mbit / s, which is used for data transmission within the traction unit. All subsystems with MVB communication interface can be reliably connected.

[0004] The event record implementation method of the common traction control unit in the industry when performing local maintenance monitoring is to use a separate fault storage board card. The board card program upgrade is connected and burned by using a JTAG emulator for upgrade. The Ethernet communication board card uses an independent Ethernet to CAN / 485 bus. The device board card is of multiple types, complex structure, high cost, poor compatibility of application development software, and long time consumption for field maintenance. SUMMARY

[0005] Therefore, the present application provides a centralized system management board card and method for locomotive traction control unit, which solves the problems of complex field maintenance of the existing locomotive traction control unit, low cost and reliable performance.

[0006] Therefore, the present application provides the following technical solutions:

[0007] The application provides a locomotive traction control unit centralized system management board card, which comprises a processor unit, a CAN unit, a storage unit, a cache unit, a switch unit and an Ethernet unit; the CAN unit, the storage unit, the cache unit, the switch unit and the Ethernet unit are in data communication connection with the processor unit respectively;

[0008] The processor unit is used for completing data scheduling conversion operation processing of the CAN unit, the storage unit, the first Ethernet unit, the second Ethernet unit and the switch unit.

[0009] The storage unit is used for completing data recording of the locomotive traction control unit backboard CAN unit.

[0010] The cache unit is used for completing program application space expansion and data caching of the processor.

[0011] The Ethernet unit comprises a first Ethernet unit and a second Ethernet unit; the first Ethernet unit is in data communication with a locomotive Ethernet communication main port ETH1 and is used for completing data transceiving of the locomotive Ethernet communication main port ETH1; the second Ethernet unit is in data communication with a locomotive Ethernet communication slave port ETH2 and is used for completing data transceiving of the locomotive Ethernet communication redundant slave port ETH2.

[0012] The switch unit is in data communication with traction control unit Ethernet interfaces ETH3-ETH7 and is used for completing centralized management and storage recording data download of the traction control unit Ethernet interfaces ETH3-ETH7, realizing on-board fault storage data reading, running variable monitoring and program upgrading.

[0013] The CAN unit is used for completing traction control unit backboard CAN data transceiving.

[0014] Further, master-slave redundant Ethernet communication channel judgment logic is adopted, and the main channel ETH1 communication is preferentially adopted to communicate with the train Ethernet; when it is judged that the ETH1 channel is faulty, the ETH2 channel is switched to.

[0015] Further, the processor unit is an STM32F407 chip.

[0016] Further, the CAN unit is a TJA1050T chip.

[0017] Further, the storage unit is an MIRCO SD card.

[0018] Further, the cache unit is an SRAM.

[0019] Further, the switch unit is a KSZ8895.

[0020] Further, the Ethernet unit is a W5300.

[0021] In still another aspect, the application also provides a centralized system management method for the centralized system management board card of the locomotive traction control unit, the method comprising:

[0022] S1, the main controller CPU performs device initialization detection;

[0023] S2, if the initialization is unsuccessful, a fault display of unsuccessful initialization is performed;

[0024] S3, if the initialization is successful, it is judged whether the Ethernet communication channel ETH1 is normal; at the same time, the CAN data is collected and stored to the storage unit through the backplane CAN bus;

[0025] S4, if the main communication channel is normal, the Ethernet main communication processing is performed by using the first Ethernet unit, and the switch unit performs the Ethernet communication centralized management and storage record data download on the traction control unit Ethernet interface ETH3-ETH7, so as to realize the on-board fault storage data reading, running variable monitoring and program upgrading;

[0026] S5, if the main communication channel is not normal, the Ethernet slave communication processing is performed by using the second Ethernet unit, and the switch unit performs the Ethernet communication centralized management and storage record data download on the traction control unit Ethernet interface ETH3-ETH7, so as to realize the on-board fault storage data reading, running variable monitoring and program upgrading.

[0027] The application has the following advantages and positive effects:

[0028] The centralized system management board card in the application is loaded into the traction control unit, and a standard Ethernet communication bus interface is provided externally. The independent Ethernet unit, the switch unit, the storage unit and the CAN unit are expanded, the train Ethernet communication of the traction control unit, the fault storage reading, the centralized program upgrading download function of the traction control unit single board are realized, the types of the maintenance board cards of the traction control unit are reduced, the maintenance cost is effectively reduced, the stability of the traction control unit device is improved, the problems of the complex on-site maintenance of the existing locomotive traction control unit are solved, and the cost is low and the performance is reliable. BRIEF DESCRIPTION OF DRAWINGS

[0029] In order to more clearly illustrate the technical solutions in the embodiments of the application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiment or prior art description. Obviously, the drawings in the following description are some embodiments of the application, and for those skilled in the art, other drawings can also be obtained without creative labor.

[0030] Figure 1The hardware schematic diagram of the centralized system management board card of the locomotive traction control unit in the embodiment of the present application;

[0031] Figure 2 The typical application example of the centralized system management board card of the locomotive traction control unit in the embodiment of the present application;

[0032] Figure 3 The specific principle scheme of the centralized system management board card of the locomotive traction control unit in the embodiment of the present application. DETAILED DESCRIPTION

[0033] In order to make the personnel in the technical field better understand the present application scheme, the technical scheme in the embodiment of the present application will be described clearly and completely in the following with reference to the drawings in the embodiment of the present application. Obviously, the described embodiment is only a part of the embodiment of the present application, not all. Based on the embodiment in the present application, all other embodiments obtained by the ordinary skilled in the art without creative labor should belong to the scope of the present application.

[0034] It should be noted that the terms "first", "second" and the like in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and do not necessarily describe a specific order or sequence. It should be understood that the data thus used can be interchanged under appropriate circumstances, so that the embodiments of the present application described herein can be implemented in an order other than that illustrated or described herein. In addition, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusion, for example, a process, method, system, product or device including a series of steps or units does not have to be limited to those steps or units clearly listed, but can include other steps or units not clearly listed or inherent to these processes, methods, products or devices.

[0035] As shown in Figure 1 The centralized system management board card of the locomotive traction control unit in the embodiment of the present application mainly has six parts, which are used for local maintenance monitoring of the traction control unit, including: a processor unit, a CAN unit, a storage unit, a cache unit, a switch unit and an Ethernet unit; wherein the CAN unit, the storage unit, the cache unit, the switch unit and the Ethernet unit are respectively connected in data communication with the processor unit.

[0036] Specifically, the processor unit is used to complete the data scheduling conversion operation processing of the CAN unit, the storage unit, the first Ethernet unit, the second Ethernet unit and the switch unit.

[0037] The storage unit is used to complete the data recording of the CAN unit of the locomotive traction control unit backplane.

[0038] The cache unit is used for completing program application space expansion and data caching of the processor.

[0039] The Ethernet unit includes a first Ethernet unit and a second Ethernet unit, the first Ethernet unit is in data communication with a locomotive Ethernet communication master port ETH1, and is used for completing data transceiving of the locomotive Ethernet communication master port ETH1; the second Ethernet unit is in data communication with a locomotive Ethernet communication slave port ETH2, and is used for completing data transceiving of the locomotive Ethernet communication redundant slave port ETH2. In a specific application, a master-slave redundant Ethernet communication channel judgment logic is adopted, the master channel ETH1 communication is preferentially adopted to communicate with the train Ethernet, and when it is judged that the ETH1 channel is faulty, the ETH2 channel is switched to, so as to improve the communication stability of the product.

[0040] The switch unit is in data communication with Ethernet interfaces ETH3-ETH7 of the traction control unit, is used for communication between the on-board traction control unit cards, and is used for completing centralized management and storage record data download of the Ethernet interfaces ETH3-ETH7 of the traction control unit. The Ethernet cards of the traction control unit are connected to the switch unit through Ethernet cables, the user is connected to the switch unit through an Ethernet cable, and the on-board fault storage data reading, running variable monitoring and program upgrading are realized by using a special host computer tool software, without a separate fault storage card and without using a JTAG emulator for connection and burning upgrading. The Ethernet communication card does not need to use an independent Ethernet to CAN / 485 bus, and the local maintenance monitoring of the traction control unit can be realized.

[0041] The CAN unit is used for completing CAN data transceiving of the traction control unit backboard.

[0042] As shown in Figure 2 For a typical application example, in the locomotive traction control unit centralized system management card, the processor unit is an STM32F407 chip, the CAN unit is a TJA1050T chip, the storage unit is an MIRCO SD card, the cache unit is an SRAM, the switch unit is a KSZ8895, and the Ethernet unit is a W5300.

[0043] The ARM processor STM32F407 completes overall application scheduling of the card, transmits backboard CAN bus data to the storage function unit for storage, completes locomotive Ethernet communication processing of ETH1 and ETH2, completes program loop scheduling, and completes initialization application of the switch chip KSZ8895.

[0044] As shown in Figure 3 The application method of the above centralized system management card is shown, which includes:

[0045] S1, the main controller CPU performs device initialization detection; if the initialization is successful, S2 is executed, if the initialization is not successful, a fault display of unsuccessful initialization is performed;

[0046] S2, whether the Ethernet communication channel is normal is judged; meanwhile, the CAN data is collected and stored to the storage unit through the backplane CAN bus;

[0047] The Ethernet communication channel includes a main communication channel ETH1 and a slave communication channel ETH2.

[0048] S3, if the main communication channel is normal, the Ethernet main communication processing is performed by using the first Ethernet unit, and the Ethernet communication centralized management and storage record data download are performed on the Ethernet interface ETH3-ETH7 of the traction control unit by the switch unit, so as to realize the on-board fault storage data reading, running variable monitoring and program upgrading;

[0049] S4, if the main communication channel is not normal, the Ethernet slave communication processing is performed by using the second Ethernet unit, and the Ethernet communication centralized management and storage record data download are performed on the Ethernet interface ETH3-ETH7 of the traction control unit by the switch unit, so as to realize the on-board fault storage data reading, running variable monitoring and program upgrading;

[0050] The master-slave redundant Ethernet communication channel judgment logic is adopted, the main channel ETH1 communication is preferentially adopted to communicate with the train Ethernet, and when the ETH1 channel fault is judged, the ETH2 channel is switched to, so as to improve the product communication stability.

[0051] The above is the embodiment, by adopting the ARM as the core processor, the independent Ethernet communication unit, the Ethernet switch unit, the storage unit and the CAN bus communication unit are expanded, the train Ethernet communication, the fault storage reading, the traction control unit single board program centralized upgrading download function of the traction control unit are realized by the single board, the traction control unit maintenance board type is reduced, the maintenance cost is effectively reduced, and the stability of the traction control unit device is improved.

[0052] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, but not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement to part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A locomotive traction control unit centralized system management board card, characterized by, The system management board card is arranged in the traction control unit and is used for local maintenance monitoring of the traction control unit; the system management board card comprises a processor unit, a CAN unit, a storage unit, a cache unit, a switch unit and an Ethernet unit; the CAN unit, the storage unit, the cache unit, the switch unit and the Ethernet unit are respectively connected in data communication with the processor unit; The processor unit is used for completing data scheduling conversion operation processing of the CAN unit, the storage unit, the first Ethernet unit, the second Ethernet unit and the switch unit; The storage unit is used for completing data recording of the CAN unit of the backboard of the locomotive traction control unit; The cache unit is used for completing program application space expansion and data caching of the processor; The Ethernet unit comprises a first Ethernet unit and a second Ethernet unit; the first Ethernet unit is connected in data communication with a main port ETH1 of the locomotive Ethernet communication and is used for completing data transmission and reception of the main port ETH1 of the locomotive Ethernet communication; the second Ethernet unit is connected in data communication with a slave port ETH2 of the locomotive Ethernet communication and is used for completing data transmission and reception of the redundant slave port ETH2 of the locomotive Ethernet communication; The switch unit is connected in data communication with Ethernet interfaces ETH3-ETH7 of the traction control unit and is used for completing centralized management and storage record data download of the Ethernet interfaces ETH3-ETH7 of the traction control unit, realizing on-board fault storage data reading, running variable monitoring and program upgrading; without a separate fault storage board card and without using a JTAG emulator for connection and burning upgrading, the Ethernet communication board card does not need to use an independent Ethernet to CAN / 485 bus; The CAN unit is used for completing CAN data transmission and reception of the backboard of the traction control unit; A master-slave redundant Ethernet communication channel judgment logic is adopted, the main channel ETH1 communication is preferentially used to communicate with the train Ethernet, and the ETH2 channel is switched to when it is judged that the ETH1 channel is faulty; the processor unit is an STM32F407 chip; the CAN unit is a TJA1050T chip; the storage unit is an MIRCO SD card; the cache unit is an SRAM; the switch unit is a KSZ8895; and the Ethernet unit is a W5300; The centralized system management method of the centralized system management board card of the locomotive traction control unit comprises the following steps: S1, the main controller CPU performs equipment initialization detection; S2, if the initialization is unsuccessful, a fault display of unsuccessful initialization is performed; S3, if the initialization is successful, it is judged whether the Ethernet communication channel ETH1 is normal; meanwhile, CAN data are collected to the storage unit through the backboard CAN bus; S4, if the main communication channel is normal, the first Ethernet unit is used to perform Ethernet main communication processing, and the switch unit performs Ethernet communication centralized management and storage record data download of the Ethernet interfaces ETH3-ETH7 of the traction control unit, realizing on-board fault storage data reading, running variable monitoring and program upgrading; S5, if the main communication channel is not normal, the second Ethernet unit is used for Ethernet slave communication processing, and the switch unit centrally manages and stores the Ethernet communication of the traction control unit Ethernet interface ETH3-ETH7 and downloads the recorded data, realizes the reading of on-board fault storage data, operation variable monitoring and program upgrading.

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