A wireless maintenance network system and method for boost chopper

Abstract

The present application provides a wireless maintenance network system and method for a boost chopper. The system comprises: a boost chopper, comprising a control panel and a wireless client, the control panel communicating bidirectionally with the wireless client; a wireless access point establishing a wireless link with the wireless client of the boost chopper; and a vehicle control unit and an operation and maintenance server communicating bidirectionally with the wireless access point via Ethernet. This system simplifies the body wiring and post-maintenance of maglev trains, enables real-time status monitoring and fault diagnosis of boost choppers, and supports the download of large amounts of service data, enabling rapid software upgrades.

Description

Technical Field

[0001] The present application relates to the technical field of maglev trains, and in particular to a wireless maintenance network system and maintenance method for a boost chopper. Background Art

[0002] There are a large number of boost choppers (HS) on the current maglev trains. The boost chopper is one of the key equipment of the maglev train and has a significant impact on the train's driving safety and operational security.

[0003] To monitor the working status of the boost chopper, CAN (Controller Area Network) bus technology is currently used. However, this technology has a small data transmission volume, poor real-time status monitoring, inability to transmit event record data, limited software upgrades, complex wiring, and restricts intelligent operation and maintenance and automated maintenance.

[0004] As big data, cloud computing, and artificial intelligence technologies are rapidly penetrating into various industries, intelligent operation and maintenance and automated inspection and repair in the rail transit industry are the general trend, and CAN bus technology can no longer meet the requirements. Summary of the Invention

[0005] In order to solve the problem that the boost chopper of a maglev train cannot be maintained in real time, the embodiments of the present application provide a boost chopper wireless maintenance network system and method.

[0006] In a first aspect, an embodiment of the present application provides a boost chopper wireless maintenance network system, which is applied to a maglev train. The system includes:

[0007] A boost chopper, the boost chopper comprising a control board and a wireless client, wherein the control board performs bidirectional communication with the wireless client;

[0008] a wireless access point, establishing a wireless link with a wireless client of the boost chopper;

[0009] The vehicle control unit and the operation and maintenance server perform two-way communication with the wireless access point via Ethernet, so that the control board of the boost chopper performs two-way communication with the vehicle control unit and the operation and maintenance server via the wireless link.

[0010] In some embodiments, the boost chopper is disposed below the floor of the passenger cabin or driver's cab of the maglev train, and the wireless access point, the vehicle control unit, and the operation and maintenance server are disposed above the floor of the passenger cabin or driver's cab of the maglev train.

[0011] In some embodiments, the vehicle control unit and the operation and maintenance server perform bidirectional communication with the wireless access point via an Ethernet switch.

[0012] In some embodiments, the boost chopper wireless maintenance network system further includes:

[0013] The intelligent display unit performs two-way communication with the vehicle control unit via Ethernet.

[0014] In some embodiments, there are multiple wireless access points, and a one-hop or multi-hop wireless link is established with each wireless client of the boost chopper.

[0015] In a second aspect, an embodiment of the present application provides a maintenance method for a boost chopper, which is implemented based on the boost chopper wireless maintenance network system described in the first aspect. The method includes:

[0016] The control panel of each boost chopper of the maglev train obtains the status information of the boost chopper in real time;

[0017] The status information is transmitted in real time to the vehicle control unit and the operation and maintenance server via the wireless link established between the wireless client of each boost chopper and the wireless access point;

[0018] The control panel of each boost chopper of the maglev train can bidirectionally exchange software update-related data with the operation and maintenance server via a wireless link established between the wireless client of each boost chopper and the wireless access point;

[0019] The software update related data includes at least one of the following:

[0020] The control board sends a software version query request to the operation and maintenance server;

[0021] Software version query results sent from the operation and maintenance server to the control board;

[0022] The control board sends a request for the software upgrade package to the operation and maintenance server;

[0023] Software upgrade package sent from the operation and maintenance server to the control board;

[0024] The latest software version information sent by the operation and maintenance server to the control board.

[0025] In some embodiments, the boost chopper maintenance method further includes:

[0026] The vehicle control unit processes the status information and transmits it to the intelligent display unit for graphical display.

[0027] In some embodiments, the boost chopper maintenance method further includes:

[0028] The control board of the boost chopper performs key negotiation with the vehicle control unit and the operation and maintenance server in advance, so that the status information and software update related data are encrypted during transmission.

[0029] In some embodiments, the boost chopper maintenance method further includes:

[0030] The operation and maintenance server performs real-time status monitoring, fault diagnosis, and software upgrade on each boost chopper based on the status information and software update related data.

[0031] In some embodiments, the method further comprises:

[0032] The vehicle control unit adjusts the traction working condition of the maglev train accordingly according to the status information of each boost chopper of the maglev train.

[0033] Compared with the prior art, one or more embodiments of the present application have at least the following beneficial effects:

[0034] This application establishes a wireless link between the boost chopper's wireless client and a wireless access point. Through this wireless link, the boost chopper's control panel communicates bidirectionally with the vehicle control unit and operation and maintenance server. On the one hand, the wireless technology-based boost chopper wireless maintenance network system provided by this embodiment simplifies the maglev train's body wiring and subsequent maintenance, reducing workload, labor intensity, and labor costs. On the other hand, this high-speed wireless technology enables real-time status monitoring and fault diagnosis of the boost chopper, supports large-scale service data downloads, and enables rapid software upgrades, making high-level intelligent operation and maintenance and automated repair possible. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] It should be understood that the following drawings only illustrate certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying any creative work.

[0036] Figure 1 This is a schematic diagram of a wireless maintenance network system for a boost chopper provided in an embodiment of the present application;

[0037] Figure 2 This is a schematic diagram of another boost chopper wireless maintenance network system provided by an embodiment of the present application;

[0038] Figure 3 This is a flow chart of a maintenance method for a boost chopper provided in an embodiment of the present application;

[0039] Figure 4 This is a flow chart of another method for maintaining a boost chopper provided by an embodiment of the present application;

[0040] Figure 5This is a flow chart of another method for maintaining a boost chopper provided by an embodiment of the present application;

[0041] Figure 6 This is a flow chart of another method for maintaining a boost chopper provided in an embodiment of the present application. DETAILED DESCRIPTION

[0042] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, not all of the embodiments. The components of the embodiments of the present invention generally described and shown in the drawings herein can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without making creative work are within the scope of protection of the present invention.

[0043] In the related art, there are the following technical deficiencies:

[0044] (1) Small amount of data transmitted

[0045] Within a communication distance of 40 meters, the CAN bus bandwidth is 1000kbps, which means that the boost chopper of the entire vehicle can only transmit a small amount of key status data to the diagnostic maintenance network. This greatly limits the application of intelligent operation and maintenance and also leads to a relatively low level of automation in maintenance.

[0046] (2) Poor real-time status monitoring

[0047] The characteristics of the CAN bus itself determine that the boost choppers connected to the same CAN bus need to share bandwidth. However, due to the limited bandwidth of the CAN bus, in order to monitor all the boost choppers in the vehicle, a longer status data transmission cycle can only be set. This results in poor real-time performance of the boost chopper status monitoring.

[0048] (3) Unable to transmit event log data

[0049] The boost chopper records key events in the network formed by itself and the entire vehicle's boost chopper. The resulting data file is relatively large, but due to CAN bus bandwidth limitations, this file cannot currently be uploaded to the diagnostic maintenance network for analysis. This is clearly contrary to the trend of intelligent operation and maintenance and automated maintenance.

[0050] (4) Software upgrade restrictions

[0051] With the continuous development of intelligent operation and maintenance, the control board software functions in the boost chopper are becoming increasingly rich, and the software package is becoming larger and larger. However, due to the limitation of CAN bus bandwidth, there are currently relatively strict restrictions on the size of the control board software package, which is obviously contrary to the trend of intelligent operation and maintenance and automated maintenance.

[0052] (5) Limiting the level of intelligent operation and maintenance and automated maintenance

[0053] The CAN bus protocol is simple and it is difficult to implement complex upper-level advanced protocol functions, which limits the level of intelligent operation and maintenance and automated maintenance.

[0054] (6) Complex wiring

[0055] In addition to the boost chopper, the maglev train has many other devices and the number is huge, so it is impossible to connect them all to one CAN bus. Therefore, there are currently multiple CAN buses on the train, which leads to complex body wiring, large construction workload, high requirements for wiring technology, and very troublesome subsequent maintenance, which also increases the workload.

[0056] (7) Limiting intelligent operation and maintenance and automatic maintenance

[0057] As big data, cloud computing, and artificial intelligence technologies are rapidly penetrating into various industries, intelligent operation and maintenance and automated inspection and repair in the rail transit industry are the general trend, and CAN bus technology can no longer meet the requirements under this trend.

[0058] In view of this, the embodiments of the present application provide a wireless maintenance network system and method for a boost chopper, which can transmit a large amount of key status data of the boost chopper in real time, and at the same time realize real-time monitoring of all boost choppers in the entire vehicle. The boost chopper can upload key event record data to the wireless maintenance network system of the boost chopper in real time for analysis, thereby realizing intelligent operation and maintenance and automated maintenance. In addition, the software package of the control panel can also be downloaded in real time to update the software of the control panel in a timely manner. The wireless maintenance network system and method for the boost chopper provided by the embodiments of the present application greatly reduce the wiring of the vehicle body, avoid the tediousness of later maintenance, reduce wiring costs, and provide a strong guarantee for realizing intelligent operation and maintenance and automated maintenance.

[0059] The technical solution of the present application is described below with reference to embodiments.

[0060] Example 1

[0061] Figure 1 A schematic diagram of a boost chopper wireless maintenance network system is shown in FIG. Figure 1 As shown, this embodiment provides a boost chopper wireless maintenance network system, which is applied to maglev trains. The system includes:

[0062] The boost chopper 100 includes a control board 101 and a wireless client 102 , and the control board 101 and the wireless client 102 perform two-way communication;

[0063] The wireless access point 200 establishes a wireless link with the wireless client 102 of the boost chopper 100;

[0064] The vehicle control unit 300 and the operation and maintenance server 400 perform bidirectional communication with the wireless access point 200 via Ethernet, so that the control board 101 of the boost chopper 100 performs bidirectional communication with the vehicle control unit 300 and the operation and maintenance server 400 via a wireless link.

[0065] Specifically, the control board 101 in the boost chopper 100 and the wireless client 102 (STA, STAtion) communicate bidirectionally via Ethernet. Both the wireless client 102 and the wireless access point 200 in the boost chopper 100 support automatic configuration and automatic networking. If the boost chopper 100 or wireless access point 200 needs to be replaced due to a hardware failure, the wireless client or wireless access point 200 in the replaced boost chopper 100 can automatically configure itself, connect to the network, and begin operation without manual intervention.

[0066] In actual applications, there may be multiple boost choppers, wireless access points (APs), and vehicle control units on a maglev train, and the operation and maintenance server is installed with intelligent operation and maintenance software.

[0067] In this embodiment, a wireless link is established between the boost chopper's wireless client and a wireless access point. Through this wireless link, the boost chopper's control panel communicates bidirectionally with the vehicle control unit and the operation and maintenance server. This wireless technology-based boost chopper wireless maintenance network system simplifies the maglev train's body wiring, simplifying subsequent maintenance, reducing workload and labor intensity, and saving labor costs. Furthermore, this high-speed wireless technology enables real-time status monitoring and fault diagnosis of the boost chopper, supports large amounts of service data download, and enables rapid software upgrades, making high-level intelligent operation and maintenance and automated inspection possible.

[0068] In some embodiments, the boost chopper is located below the floor of the passenger cabin or driver's cab of the maglev train, while the wireless access point, vehicle control unit, and operation and maintenance server are located above the floor of the passenger cabin or driver's cab of the maglev train. The boost chopper enables bidirectional communication with the vehicle control unit and operation and maintenance server via the wireless access point, eliminating the complex wiring of a CAN bus and enabling real-time monitoring of the boost chopper.

[0069] In some embodiments, the vehicle control unit 300 and the operation and maintenance server 400 perform bidirectional communication with the wireless access point 200 via the Ethernet switch 500, so that data can be transmitted between the vehicle control unit 300 and the operation and maintenance server 400 without conflict.

[0070] In some embodiments, the boost chopper wireless maintenance network system further includes:

[0071] The intelligent display unit 600 performs bidirectional communication with the vehicle control unit 300 via Ethernet.

[0072] In some embodiments, there are multiple wireless access points, and a one-hop or multi-hop wireless link is established with the wireless client of each boost chopper.

[0073] Specifically, when the wireless access point establishes a one-hop wireless link with the wireless client of the boost chopper, the wireless client of the boost chopper accesses the network through a wireless access point and performs two-way communication with the vehicle control unit 300 and the operation and maintenance server 400, such as Figure 1 When the wireless access point establishes a multi-hop wireless link with the wireless client of the boost chopper, the wireless client of the boost chopper accesses the network through multiple wireless access points and performs two-way communication with the vehicle control unit 300 and the operation and maintenance server 400, as shown in FIG. Figure 2 As shown, wireless clients communicate with wireless access points via multi-hop wireless links to form a wireless mesh network.

[0074] Example 2

[0075] Figure 3 A flow chart of a maintenance method for a boost chopper is shown. Figure 3 As shown, this embodiment provides a maintenance method for a boost chopper, which is implemented based on the boost chopper wireless maintenance network system of the first embodiment. The method includes:

[0076] Step S100: The control board of each boost chopper of the maglev train obtains the status information of the boost chopper in real time. That is, the control board of each boost chopper obtains the status information of the boost chopper in real time.

[0077] Step S200 : The status information is transmitted in real time to the vehicle control unit and the operation and maintenance server via the wireless link established between the wireless client of each boost chopper and the wireless access point.

[0078] In some embodiments, the status information includes at least one of the following:

[0079] process data

[0080] Message data.

[0081] In practical applications, process data can include real-time data on the boost chopper's current and voltage. Message data can include fault event records for the boost chopper, such as power-on self-test failures, overcurrent, and overvoltage faults. The software on the control board (which controls / regulates the boost chopper circuit) may be updated from time to time, necessitating the acquisition of software update data.

[0082] Step S300: bidirectional interaction of software update related data is performed between the control panels of each boost chopper of the maglev train and the operation and maintenance server via wireless links established between the wireless clients of each boost chopper and the wireless access point.

[0083] The software update related data includes at least one of the following:

[0084] The control board sends a software version query request to the operation and maintenance server;

[0085] Software version query results sent from the operation and maintenance server to the control board;

[0086] The control board sends a request for the software upgrade package to the operation and maintenance server;

[0087] Software upgrade package sent from the operation and maintenance server to the control board;

[0088] The latest software version information sent by the operation and maintenance server to the control board.

[0089] The two-way interactive software updating method for the control board of the boost chopper and the operation and maintenance server may include but is not limited to the following two methods:

[0090] Method 1: The control panel communicates with the operation and maintenance server through a wireless access point and sends a software version query request to query the latest software version information. The operation and maintenance server feeds back the query result corresponding to the query request to the control panel via the wireless link. If the query result shows that there is a new software version to be updated, the control panel sends a software upgrade package request to the operation and maintenance server. The operation and maintenance server sends the software upgrade package to the control panel. The control panel downloads the software upgrade package to the control panel via the wireless link established by the wireless access point and the wireless client, thereby achieving timely update of the latest software version. If the query result shows that the current software version is already the latest version, the operation and maintenance server feeds back the information that there is no new software version to the control panel via the wireless link.

[0091] Method 2: The operation and maintenance server pushes the latest software version update reminder. Specifically, the latest software version information can be pushed regularly or when there is an update. The update reminder is pushed to the control board via the wireless link established by the wireless access point and the wireless client. The control board determines whether to update the control board software based on the pushed update reminder. The control board determines whether to update the control board software based on the pushed update reminder, which can further include:

[0092] If the update reminder is pushed while the maglev train is in operation, and the update reminder includes an operation that affects the normal operation of the maglev train (for example, the control board needs to be restarted after the software update is completed), the control board software update will not be performed;

[0093] If the update reminder is pushed when the maglev train is not in operation, or if the update reminder is pushed when the maglev train is in operation but the update reminder does not include an operation that affects the normal operation of the maglev train, the control board directly downloads the software update data via the wireless link established between the wireless access point and the wireless client to update the software of the control board;

[0094] That is to say, in actual applications, when the operation and maintenance server pushes the update reminder of the latest software version, it is necessary to combine auxiliary information to determine whether to update the software, so as to avoid direct software updates causing maglev train failures or risks.

[0095] Figure 4 Another maintenance method flow chart of a boost chopper is shown in FIG. Figure 4 As shown, in some embodiments, the boost chopper maintenance method further includes:

[0096] Step S400: The vehicle control unit processes the status information and transmits it to the intelligent display unit for graphical display.

[0097] Furthermore, the intelligent display unit performs graphical display and may also include:

[0098] Identify the data type of the status information;

[0099] The status information is graphically displayed by category.

[0100] Figure 5 Another maintenance method flow chart of a boost chopper is shown in FIG. Figure 5 As shown, in some embodiments, the method may further include:

[0101] Step S500: The vehicle control unit adjusts the traction working condition of the maglev train accordingly according to the status information of each boost chopper of the maglev train.

[0102] In some embodiments, the boost chopper maintenance method further includes pre-negotiating a key between the boost chopper control board, the vehicle control unit, and the operation and maintenance server to encrypt status information and software update-related data during real-time transmission. In practical applications, key negotiation can be performed based on the IKE protocol.

[0103] Figure 6 Another maintenance method flow chart of a boost chopper is shown in FIG. Figure 6 As shown, in some embodiments, the maintenance method of the boost chopper further includes:

[0104] Step S600: The operation and maintenance server performs real-time status information monitoring, fault diagnosis, and software upgrade on each boost chopper based on the status information and software update related data.

[0105] In actual applications, after the intelligent operation and maintenance software in the operation and maintenance server obtains the status information, it can determine whether a fault currently exists and the type of fault based on the pre-set correlation between the fault type and the status information. Since the status information can be transmitted in real time through the wireless link established by the wireless access point and the wireless client and obtained by the intelligent operation and maintenance software, real-time fault diagnosis can be achieved, and faults can be diagnosed and handled promptly during the operation or non-operation of the maglev train. In particular, during the operation of the maglev train, if a fault is diagnosed, the operation and maintenance server transmits the fault information to the intelligent display unit via Ethernet for warning display, prompting the operator to handle it in a timely manner. The operation and maintenance server also implements software upgrades based on software update-related data.

[0106] It should be understood that the above steps of the method are not limited to the above execution order. In actual applications, at least some of the above steps can be executed simultaneously or the execution order can be adjusted. This embodiment does not impose the sole limitation on this.

[0107] In summary, the boost chopper wireless maintenance network system and method provided by the embodiments of the present application eliminates the hassle of vehicle wiring, reduces labor intensity, saves labor costs, and avoids the inconvenience of having to troubleshoot a large number of cables when a fault occurs, as is the case with multiple CAN buses on the vehicle. Because the maintenance network utilizes high-speed wireless technology, it can carry more business data, which is a prerequisite for technologies such as big data, cloud computing, and artificial intelligence. Therefore, it can significantly improve intelligent operation and maintenance and automated repair capabilities.

[0108] In the several embodiments provided in the embodiments of the present invention, it should be understood that the disclosed system and method can also be implemented in other ways. The above-described system and method embodiments are merely illustrative.

[0109] It should be noted that, in this document, the terms "comprises," "includes," or any other variations thereof are intended to encompass non-exclusive inclusion, such that a process, method, article, or apparatus comprising a series of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of other identical elements in the process, method, article, or apparatus comprising the element.

[0110] Although the embodiments disclosed herein are as described above, the contents described herein are merely embodiments for facilitating understanding of the present invention and are not intended to limit the present invention. Any person skilled in the art may make any modifications and variations in the form and details of the embodiments without departing from the spirit and scope of the present invention. However, the scope of patent protection of the present invention shall remain subject to the scope defined by the appended claims.

Claims

1. A wireless maintenance network system for a boost chopper, characterized in that: Applied to maglev trains, the system includes: A boost chopper is provided under the floor of the passenger cabin or the driver's cab of the maglev train, and includes a control panel and a wireless client, wherein the control panel and the wireless client perform two-way communication; a wireless access point, establishing a wireless link with a wireless client of the boost chopper; The vehicle control unit and the operation and maintenance server perform bidirectional communication with the wireless access point via Ethernet, so that the control board of the boost chopper performs bidirectional communication with the vehicle control unit and the operation and maintenance server via the wireless link, and the vehicle control unit and the operation and maintenance server are arranged above the floor of the passenger cabin or the driver's cab of the maglev train; The control panel of each boost chopper and the operation and maintenance server perform two-way interaction of software update related data via a wireless link. The method for two-way interaction of software update related data between the control panel of the boost chopper and the operation and maintenance server includes: The operation and maintenance server pushes an update reminder for the latest software version, and the update reminder is pushed to the control panel via a wireless link. If the update reminder is pushed while the maglev train is in operation, and the update reminder includes operations that affect the normal operation of the maglev train, the control panel's software will not be updated. If the update reminder is pushed while the maglev train is not in operation, or the update reminder is pushed while the maglev train is in operation, but the update reminder does not include operations that affect the normal operation of the maglev train, the control panel directly downloads the software update data via a wireless link to update the control panel's software.

2. The boost chopper wireless maintenance network system according to claim 1, characterized in that: The wireless access point is arranged above the floor of the passenger cabin or the driver's cab of the maglev train.

3. The boost chopper wireless maintenance network system according to claim 1, characterized in that: The vehicle control unit and the operation and maintenance server perform two-way communication with the wireless access point via an Ethernet switch.

4. The boost chopper wireless maintenance network system according to claim 1, characterized in that: Also includes: The intelligent display unit performs two-way communication with the vehicle control unit via Ethernet.

5. The boost chopper wireless maintenance network system according to claim 1, characterized in that: There are multiple wireless access points, which establish one-hop or multi-hop wireless links with each wireless client of the boost chopper.

6. A method for maintaining a boost chopper, characterized in that: The method is implemented based on the boost chopper wireless maintenance network system according to any one of claims 1 to 5, and includes: The control panel of each boost chopper of the maglev train obtains the status information of the boost chopper in real time; The status information is transmitted in real time to the vehicle control unit and the operation and maintenance server via the wireless link established between the wireless client of each boost chopper and the wireless access point; The control panel of each boost chopper of the maglev train and the operation and maintenance server carry out two-way interaction of software update related data via the wireless link established between the wireless client of each boost chopper and the wireless access point; The software update related data includes at least one of the following: The control board sends a software version query request to the operation and maintenance server; Software version query results sent from the operation and maintenance server to the control board; The control board sends a request for the software upgrade package to the operation and maintenance server; Software upgrade package sent from the operation and maintenance server to the control board; The latest software version information sent by the operation and maintenance server to the control board.

7. The method for maintaining a boost chopper according to claim 6, wherein: Also includes: The vehicle control unit processes the status information and transmits it to the intelligent display unit for graphical display.

8. The method for maintaining a boost chopper according to claim 6, wherein: Also includes: The control board of the boost chopper performs key negotiation with the vehicle control unit and the operation and maintenance server in advance, so that the status information and software update related data are encrypted during transmission.

9. The method for maintaining a boost chopper according to claim 6, wherein: Also includes: The operation and maintenance server performs real-time status monitoring, fault diagnosis, and software upgrade on each boost chopper based on the status information and software update related data.

10. The method for maintaining a boost chopper according to claim 6, wherein: The method further comprises: The vehicle control unit adjusts the traction working condition of the maglev train accordingly according to the status information of each boost chopper of the maglev train.

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