WO2022135057A1

WO2022135057A1 - Vehicle bus topological graph generation method and apparatus, and computing device

Info

Publication number: WO2022135057A1
Application number: PCT/CN2021/133807
Authority: WO
Inventors: 王维林
Original assignee: 深圳市道通科技股份有限公司
Priority date: 2020-12-23
Filing date: 2021-11-29
Publication date: 2022-06-30
Also published as: CN112666926B; CN112666926A

Abstract

A vehicle bus topological graph generation method and apparatus, which relate to the technical field of vehicle testing. The method comprises: acquiring vehicle information of a vehicle and an electronic control unit list configured by the vehicle (S11); determining, according to the vehicle information, a topological graph template corresponding to the vehicle information, wherein the topological graph template is classified according to connection features, the connection features comprise a connection relationship between nodes and a connection relationship between buses, and the nodes are used for representing an electronic control unit and a diagnostic interface with an external device (S12); and generating and displaying a vehicle bus topological graph according to the electronic control unit list configured by the vehicle and the topological graph template (S13). A layout configuration rule can be optimized, a dynamic change in a unit state and a click event are supported, the dynamic interaction capability of a topological graph is realized, the topological graph is concise and algorithm implementation is facilitated, and the use efficiency of the topological graph is improved.

Description

Method, device and computing device for generating vehicle bus topology map

This application claims the priority of the Chinese patent application with the application number 202011546698.9 and the application title "Method, Apparatus and Computing Device for Generating Automobile Bus Topology Map", which was filed with the China Patent Office on December 23, 2020, the entire contents of which are incorporated by reference in this application.

technical field

The present application relates to the technical field of vehicle detection, and in particular, to a method, device and computing device for generating a topology map of a vehicle bus.

Background technique

In the analysis of car computer failures, more than 50% of the failures are caused by communication reasons. Communication failure causes include power bus failure, power failure, communication line failure, unit failure, or sensor failure. The bus topology diagram can help users locate the scope and cause of the fault, and quickly analyze the fault from the macro level. There are various connection methods and various bus connections between the unit components of the automobile, and the connection relationship between the buses is also relatively complex. How to design an accurate, effective, concise and beautiful topology is very important for automobile troubleshooting.

SUMMARY OF THE INVENTION

In view of the above problems, embodiments of the present invention provide a method, apparatus, and computing device for generating a topology map of an automobile bus, which overcome the above problems or at least partially solve the above problems.

According to an aspect of the embodiments of the present invention, there is provided a method for generating an automobile bus topology map, which is applied to an automobile fault diagnosis device. The method includes: acquiring vehicle information of an automobile and a list of electronic control units configured in the automobile; The vehicle information determines a topology map template corresponding to the vehicle information, wherein the topology map template is classified according to connection characteristics, and the connection characteristics include the connection relationship of nodes and the connection relationship of buses, and the nodes are used for Characterize the electronic control unit and the diagnostic interface with external devices; generate and display the car bus topology map according to the list of electronic control units configured in the car and the topology map template.

In an optional manner, the nodes in the topology diagram template are arranged in a determinant format, the nodes of different types are arranged in rows, and the nodes include diagnostic interface nodes, root Nodes and child nodes, said nodes of the same type are arranged in columns.

In an optional manner, the bus in the topology map template is a row gap, a column gap between the nodes, a blank space in a row formed by the node, and the node according to the connection type of the bus. According to the position of at least one of the blank spaces in the formed column, the connection type of the bus includes a normal bus, a diagnostic bus, a ring bus, an internal bus and a spanning bus.

In an optional manner, if the bus is a common bus, the bus is arranged in the column gap, or the bus is arranged in a row between the root node and the child node in the gap.

In an optional manner, if the bus is a diagnostic bus, the bus is arranged in a row gap between the diagnostic interface node and the root node, or if the bus is connected to the root node node, the bus can be arranged in a blank space in a column formed by the node, or, if the bus is not connected to the root node, the bus can be arranged in a column gap.

In an optional manner, if the bus is a ring bus, the horizontal lines of the bus are arranged in the blanks in the row formed by the nodes, and the vertical lines of the bus are arranged in the blanks formed by the nodes. A blank space in a column or a column gap; wherein, two ends of the bus are connected to different nodes, or, both ends of the bus are connected to the same node.

In an optional manner, if the bus is an internal bus, the bus is arranged in a column gap.

In an optional manner, if the bus is a spanning line, the bus is arranged in a row gap, or at the bottom of a row formed by the nodes.

In an optional manner, the child nodes include a key node and a common node, the key node is a node connected to at least two buses, and the common node is a node connected to one bus. If both the key node and the common node exist in the column, the key node is closer to the root node than the common node.

In an optional manner, the common nodes connected to the same bus in the topology diagram template are arranged according to the degree of closeness of the functional relationship, and common nodes with a high degree of closeness are arranged in the same area.

In an optional manner, a bus in the topology map template includes a plurality of vertical lines, and each vertical line in the plurality of vertical lines connects the number of the common nodes within an average range.

In an optional manner, the position of the node used to characterize the electronic control unit in the topology map template is determined by the weight value of the electronic control unit, and the weight value of the electronic control unit is It is determined according to the probability of failure of the electronic control unit and the importance of the failure of the electronic control unit.

In an optional manner, the node used to characterize the electronic control unit with a high weight value is located in the main area of the topology map template.

In an optional manner, the main area is located at the upper left of the topology map template.

In an optional manner, the generating and displaying the car bus topology map according to the list of electronic control units configured on the car and the topology map template includes: a list of the electronic control units configured on the car The electronic control units in the map are mapped to the nodes of the topology map template to generate and display the vehicle bus topology map.

In an optional manner, the method further includes: if the number of electronic control units in the electronic control unit list is less than the number of the nodes, adjusting the number of the nodes in the topology map template Arrange locations to generate and display a car bus topology map.

In an optional manner, the method further includes: if there is an electronic control unit connected to a local area network bus in the electronic control unit list, displaying a node used to represent the electronic control unit in the vehicle bus topology map. It is used to characterize the identifier connected to the local area network bus.

In an optional manner, the method further includes: different buses in the vehicle bus topology diagram are distinguished according to display identifiers, the buses include a key bus and a common bus, and the display identifiers of the key buses are the same as the display identifiers. Compared with the display logo of the ordinary bus, it is more obvious.

In an optional manner, after generating and displaying the vehicle bus topology map, the method further includes: receiving a control instruction input by a user to a node in the vehicle bus topology diagram; Display interface related to the electronic control unit represented by the node.

In an optional manner, the display state of the node in the vehicle bus topology diagram represents the diagnosis state of the electronic control unit represented by the node.

According to another aspect of the embodiments of the present invention, there is provided an apparatus for generating an automobile bus topology map, which is applied to an automobile fault diagnosis device. The apparatus includes: a data acquisition unit for acquiring vehicle information of the automobile and the configuration of the automobile. The list of electronic control units; the template determination unit is used to determine the topology map template corresponding to the vehicle information according to the vehicle information, wherein the topology map template is classified according to the connection feature, and the connection feature includes the node's The connection relationship and the connection relationship of the bus, the nodes are used to represent the electronic control unit and the diagnostic interface with the external device; the topology map generation unit is used for according to the electronic control unit list configured in the car and the topology map template, Generate and display automotive bus topology diagrams.

According to another aspect of the embodiments of the present invention, a computing device is provided, including: a processor, a memory, a communication interface, and a communication bus, and the processor, the memory, and the communication interface communicate with each other through the communication bus. communication between;

The memory is used for storing at least one executable instruction, and the executable instruction enables the processor to execute the steps of the above-mentioned method for generating a vehicle bus topology map.

According to yet another aspect of the embodiments of the present invention, a computer storage medium is provided, where at least one executable instruction is stored in the storage medium, and the executable instruction causes the processor to execute the above-mentioned method for generating a vehicle bus topology map. step.

In the embodiment of the present invention, the vehicle information of the car and the list of electronic control units configured on the car are obtained; the topology map template corresponding to the vehicle information is determined according to the vehicle information, wherein the topology map template is based on the connection feature Classification, the connection characteristics include the connection relationship of nodes and the connection relationship of the bus, the nodes are used to represent the electronic control unit and the diagnostic interface with external equipment; according to the list of electronic control units configured in the car and the topology Diagram template, generate and display the topology diagram of automobile bus, can optimize the layout and arrangement rules, support dynamic change of unit state and click event support, realize the dynamic interaction ability of topology diagram, make topology diagram concise, easy to implement algorithm, and improve the performance of topology diagram. Use efficiency.

The above description is only an overview of the technical solutions of the embodiments of the present invention. In order to understand the technical means of the embodiments of the present invention more clearly, it can be implemented according to the contents of the description, and in order to make the above and other purposes, features and The advantages can be more clearly understood, and the following specific embodiments of the present invention are given.

Description of drawings

Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are for the purpose of illustrating preferred embodiments only and are not to be considered limiting of the invention. Also, the same reference numerals are used for the same parts throughout the drawings. In the attached image:

1 shows a schematic flowchart of a method for generating a vehicle bus topology map provided by an embodiment of the present invention;

FIG. 2 shows a schematic layout diagram of a template of a vehicle bus topology diagram provided by an embodiment of the present invention;

3 shows a schematic diagram of wiring location planning of a method for generating a vehicle bus topology map provided by an embodiment of the present invention;

4 shows a schematic diagram of a ring bus connection of a method for generating a vehicle bus topology diagram provided by an embodiment of the present invention;

5 shows a schematic diagram of node arrangement of a method for generating a vehicle bus topology map provided by an embodiment of the present invention;

6 shows a schematic diagram of common node connections of a method for generating a vehicle bus topology map provided by an embodiment of the present invention;

7 shows a schematic diagram of topology map adjustment of a method for generating a vehicle bus topology map provided by an embodiment of the present invention;

8 shows a schematic diagram of a local area network bus labeling of a method for generating a vehicle bus topology map provided by an embodiment of the present invention;

9 shows a schematic diagram of yet another method for generating a vehicle bus topology map provided by an embodiment of the present invention;

10 shows a schematic structural diagram of an apparatus for generating a vehicle bus topology map provided by an embodiment of the present invention;

FIG. 11 shows a schematic structural diagram of a computing device provided by an embodiment of the present invention.

Detailed ways

Exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present invention are shown in the drawings, it should be understood that the present invention may be embodied in various forms and should not be limited by the embodiments set forth herein. Rather, these embodiments are provided so that the present invention will be more thoroughly understood, and will fully convey the scope of the present invention to those skilled in the art.

FIG. 1 shows a schematic flowchart of a method for generating a vehicle bus topology map provided by an embodiment of the present invention. The method is performed by an electronic device. The electronic device may be an electronic device such as a mobile phone, a tablet, a notebook computer, and a car diagnostic device. Among them, the electronic device can realize direct or indirect communication connection with the car to obtain the relevant data and information of the car, and then can generate the bus topology map of the car. The electronic device can display the bus topology map by itself, or send it to other display terminals for display.

As shown in Figure 1, the method for generating a vehicle bus topology diagram includes:

Step S11: Obtain vehicle information of the car and a list of electronic control units configured in the car.

In this embodiment of the present invention, the vehicle information includes a vehicle brand, a model, a model year, and the like. The vehicle information can be obtained through user input or from the car after communicating with the car. The list of electronic control units configured in the car can be queried from the central gateway by sending a command to the car.

Step S12: Determine a topology map template corresponding to the vehicle information according to the vehicle information, wherein the topology map template is classified according to connection features, and the connection features include the connection relationship of nodes and the connection relationship of buses, so The nodes are used to characterize the electronic control unit and the diagnostic interface with external devices.

In the embodiment of the present invention, for the cars of each brand, each model and each model year, summarize their car bus topology relationships, take the cars with the same or similar car bus topology relationships as the same group, and make the topology corresponding to the group Diagram template, so that the topology diagram template can cover the bus topology relationship of the group of cars. The production of the topology map template is not limited in the embodiments of the present application. The electronic device pre-stores a topology map template and a corresponding relationship between the topology map template and vehicle information. Therefore, when the electronic device is in communication connection with a specific car, by acquiring the vehicle information of the specific car, a topology map template corresponding to the vehicle information of the car can be determined. The topology diagram template reflects the connection relationship of nodes and the connection relationship of buses. The connection relationship of the nodes includes the connection relationship between the node and one end of at least one bus, and the connection relationship between the nodes; the connection relationship of the bus includes the connection relationship between each end of the bus and the node, and the connection characteristics of the bus. For example, the bus is Ring bus, etc.

In the embodiment of the present application, through the correspondence between the topology map template and the vehicle information, the electronic device can be adapted to a variety of vehicles of different brands, models, and years, making the topology relationship of the vehicle bus clear at a glance and enhancing user experience.

The following describes some of the features that a topology map template can embody.

The nodes in the topology map template are arranged in determinants, and the nodes of different types are arranged in rows. The nodes include diagnostic interface nodes, root nodes and child nodes according to their types. The nodes of the same type are arranged in rows. are arranged in columns. The nodes are arranged in cells. As shown in Figure 2, the entire layout of the topology map template is designed according to the determinant scheme, and all nodes are arranged in specific cells of the determinant. For the convenience of analysis, try to display the whole page in one page. If a page is not displayed completely, expand the columns in the horizontal direction, and keep the number of vertical rows unchanged, and display them by sliding the scroll bar left and right. By default, the determinant is in the form of 15 rows by 15 columns. In typography, horizontally, the content is centered and aligned, and vertical, the content is aligned upwards.

In this embodiment of the present invention, referring to FIG. 3 , the bus in the topology diagram template is a row gap, a column gap between the nodes, a blank space in a row formed by the node, and the node according to the connection type of the bus. According to the position of at least one of the blank spaces in the formed column, the connection type of the bus includes a normal bus, a diagnostic bus, a ring bus, an internal bus and a spanning bus. Among them, the common bus is the bus that starts from the root node (Root) and connects to other nodes. It is logically a bus structure, such as K-CAN, K-CAN1, K-CAN2 and other buses in Figure 2; the diagnostic bus is based on DLC is the starting point and is connected to the bus of Root or other nodes. It is logically a bus structure, such as K-CAN9 bus and K-CAN7 bus in Figure 2; the ring bus is a logically ring structure, which can be connected to the Root node or The bus connected to the non-Root node, such as the MOST bus in Figure 2; the internal bus is the non-gateway node as the starting point, wired in the same column, and only a bus connected to a few nodes, such as the K-CAN9 bus and Ethernet bus; spanning line is a special internal bus that can span multiple columns, such as the K-CAN3 bus in Figure 2.

If the bus is a common bus, the bus is arranged in the column gap, or the bus is arranged in the row gap between the root node and the child node. Specifically, the vertical lines of the common bus pass through the column gap of the determinant, and the horizontal lines pass through the Root node area; if the common bus crosses the left and right sides of the Root node, it can pass through the horizontal wiring area, as shown in Figure 2 in the K-CAN1 bus.

If the bus is a diagnostic bus, the bus is arranged in a row gap between the diagnostic interface node and the root node, or if the bus connects the root node, the bus can be arranged In a blank space in a column formed by the node, or, if the bus is not connected to the root node, the bus is arranged in a column gap. Specifically, the horizontal wiring of the diagnostic bus passes between the regions of the diagnostic connection joint nodes, and the vertical bus connecting the Root node passes through the columns of the determinant, and is connected to the key node or the common node. The longitudinal bus passes through the column gap of the determinant, such as the K-CAN9 bus in FIG. 2 .

If the bus is a ring bus, the horizontal lines of the bus are arranged in the blanks in the rows formed by the nodes, and the vertical lines of the bus are arranged in the blanks or column gaps in the columns formed by the nodes ; wherein, both ends of the bus are connected to different nodes, or, both ends of the bus are connected to the same node. As shown in Figure 4, the vertical wiring of the ring bus can pass through the cell or through the column gap, and the lateral line can only pass through the cell position. The connection positions of different units connected laterally on the ring bus (as shown in Figure a in Figure 4) or the left and right connections of the same unit (as shown in Figure 4 in Figure b) need to be consistent.

If the bus is an internal bus, the internal bus only includes vertical wiring, and the bus is arranged in column gaps.

If the bus is a spanning line, the bus is arranged in a row gap, or at the bottom of a row formed by the nodes. Specifically, the lateral wiring of the spanning line traverses from the lateral wiring area (ie, row gap) or bottom of the determinant, and the vertical wiring traverses from the column gap of the determinant.

In the embodiment of the present invention, a diagnostic interface node (DLC, Diagnostic Link Connector) is used as the starting point of the diagnostic bus, and is arranged at the top of the topology map template, occupying a single line, and the DLC is unique in the entire network, and is an electronic device, such as the entrance of a diagnostic tool. . The root node (Root) is used as the default gateway, and it is placed in the upper part of each child node in a single row. The root node is the starting point of most buses. It is arranged as a row and displayed in the center, which can clearly show the logical structure of the network, as shown in Figure 2. EZS node. Some cars also need to arrange secondary root nodes to better show the organizational structure between buses, as shown in the PTCU unit in Figure 2. The root node is usually connected directly to the DLC and serves as the general entry point for diagnostic tools to access the car.

The child nodes include a key node and a common node, the key node is a node connected to at least two buses, and the common node is a node connected to one bus, if the key node and the If the key node is an ordinary node, the key node is closer to the root node than the ordinary node. The key nodes are connected to multiple buses and used as gateways in communication, which has a great impact on the overall layout of the topology map template, such as COMAND, N145/1, ECM and other nodes in Figure 2. In order to reduce the crossover between the wiring of the topology diagram template, the key nodes are laid out below the root node and above other common nodes. Common nodes are electronic control units, which are arranged on the cells in a determinant format. Ordinary nodes are only connected to nodes of one bus. The common nodes connected to the same bus in the topology map template are arranged according to the closeness of the functional relationship, and common nodes with high closeness are arranged in the same area. Specifically, the arrangement of common nodes is mainly based on the following principles:

Closely related, there are nodes arranged left and right, which are arranged symmetrically in the topology map template, as shown in Figure a in Figure 5;

Nodes with close functional relationships are arranged close together, as shown in Figure b in Figure 5, the functions of the units are relatively close, and they all belong to the chassis management function and are arranged together;

Under the same conditions, they are arranged in alphabetical order from top to bottom and left to right, as shown in Figure c in Figure 5.

Usually, the bus from the Root node is connected to at least one column of units. In the following cases, some special processing needs to be done according to the actual unit configuration. A bus in the topology map template includes a plurality of vertical lines, and each vertical line in the plurality of vertical lines connects the number of the common nodes within an average range. As shown in Figure 2, K-CAN is connected to 24 units, which cannot be displayed in one column, and need to be divided into multiple columns for arrangement. Typically, no more than 12 cells per column are recommended.

The position of the node used to characterize the electronic control unit in the topology map template is determined by the weight value of the electronic control unit, the weight value of the electronic control unit is based on the failure of the electronic control unit The probability and severity of the failure of the electronic control unit are determined. Nodes for characterizing electronic control units with high weight values are located in the main area of the topology map template. For example, power system or chassis system, this part of the system has a relatively high priority. If there is a fault, it must be stopped immediately; for the body system, comfort and entertainment system, the importance is relatively low, even if there is a fault, you can continue to drive to repair Shop repairs, this part of the unit is arranged in a lower weighted area. Generally, the upper part and the left part are the focus of visual observation or the first attention area. The weight design of this part of the area is relatively high, and the weight design of the edge or the lower right part is slightly lower. Preferably, the main area is located at the upper left of the topology map template. By optimizing the layout and arrangement rules, the layout position of the units in the determinant is reasonably arranged according to the closeness of the working relationship between the components and the priority of the components, which can improve the efficiency of using the topology map template.

In this embodiment of the present invention, for the connection of common nodes, common nodes can only be connected from a column gap, a common node, a diagnostic bus, a common bus, an internal bus, and a crossover line; and a ring bus can be connected from a column gap or a row gap. As shown in FIG. 4 , the horizontal connecting lines are connected at the column gaps, and the vertical connecting lines are connected at the column gaps. To reduce intersections between connection point buses, follow these routing guidelines:

If the unit is the end of the vertical bus wiring, it is arranged in the upper connection area of the unit, such as line A in Figure 6;

If the unit is the initial segment of the longitudinal bus, it is arranged in the lower connection area of the unit, such as the B line in Figure 6;

If the unit is the non-end point of the longitudinal line, try to arrange it in the middle connection area of the unit, such as the C line in Figure 6;

If the vertical bus connects the left and right units, the connection positions on both sides should be consistent, as shown in the lines e and f in Figure 6.

For the connection of the Root area, in order to reduce the intersection of the bus in the Root area or the DLC area, the bus connection Root or DLC follows the following rules:

The bus on the left side of Root or DLC is connected to the left side, and the bus on the right side is connected to the right side;

Count the farthest distance of each bus from the Root or DLC in the horizontal direction, and sort them in descending order of distance. The bus with greater distance is connected to the upper area of Root or DLC; the bus with smaller distance is connected to the lower area of Root or DLC, as shown in the figure. In 2, K-CAN is the farthest from EZS and is arranged to be connected at the top end, while FLEXRAY is closest to EZS and is arranged to be connected at the bottom end;

If the ring bus is connected to the Root, the connection point is arranged at the lowermost part of the Root, and the connection positions on both sides need to be consistent, as shown in Figure b in Figure 4.

If part of the bus spans the left and right of the Root node, the spanning part is arranged in the horizontal wiring area of the topology map template, as shown in K-CAN1 in Figure 2.

In addition, for the routing at the gap, the routing of more than 1 vertical bus can be supported at the column gap. At the row gap, routing is generally not allowed, except for the vertical routing of the ring bus or the vertical routing of the DLC connection root.

Through the determinant layout, the embodiment of the present invention simplifies the scheme design, supports various complex bus connections, plans the bus wiring constraints, makes the appearance of the topology diagram simple, and is easy for algorithm implementation.

The production of the topology map template consists of two stages, the manuscript stage and the computer data stage. In the manuscript stage, the layout planning of the bus and the connection relationship between the nodes are marked. For specific rules, please refer to the aforementioned series of rules. After the manuscript is ready, it needs to be converted into data that can be processed by computer algorithms, so that the computer algorithms can draw topology map templates. The computer data stage also follows the aforementioned set of rules. The topology diagram template plans the overall structure of the vehicle bus topology diagram, the connection relationship between the buses, the arrangement position of the DLC, the root node, the key node and the common node.

Step S13: Generate and display a car bus topology map according to the list of electronic control units configured in the car and the topology map template.

In the embodiment of the present invention, the unit configuration prepared in the template stage is prepared according to the full series configuration, so, during the test, the vehicle model configuration may be reduced, and the vehicle bus topology map needs to be displayed according to the specific vehicle model configuration. For some brands of cars, you can send a command to query the unit configuration list from the central gateway, and apply the topology map algorithm to dynamically adjust the arrangement position of non-critical nodes in the topology map template according to the queried car configuration. Among them, the non-critical node mainly refers to the electronic control unit. The electronic control units in the list of electronic control units configured in the car are mapped to the nodes of the topology map template, so as to generate and display the car bus topology map.

If the number of electronic control units in the electronic control unit list is less than the number of the nodes, the arrangement position of the nodes in the topology map template is adjusted to generate and display a vehicle bus topology map. For some models, there are not many units and few buses. As shown in Figure 7, if each column is full, the bus topology of the vehicle will be sparse or some areas are too dense, and the excessive areas are sparse, which will affect the aesthetics. As shown in Figure 7, the units on the same bus can be arranged in multiple columns and evenly arranged; some columns can also be left empty, and the columns can be evenly arranged on the entire vehicle bus topology. The computer algorithm combines the configuration data and the template corresponding to the vehicle model to generate the vehicle bus topology map in the form of vector diagrams according to the preset rules. By optimizing the layout, the appearance of the vehicle bus topology map is simple and easy to implement.

The method for generating an automobile bus topology map according to the embodiment of the present invention can support platforms that support SVG browsers such as PC, Android, and iOS, and the planning of the number of rows and columns of the determinant of the automobile bus topology map can be adjusted, and the layout of DLC nodes in the horizontal direction can be adjusted. You can deviate from a certain column in the middle.

In the embodiment of the present invention, different buses in the vehicle bus topology diagram are distinguished according to display identifiers, the buses include a key bus and a common bus, and the display identifier of the key bus is compared with the display identifier of the common bus. The logo is obvious. Different colors can be applied to represent different buses to differentiate them. The colors need to have obvious differences in vision, and at the same time can reflect the relative meaning of the bus. For example, the bus of the power system has a high degree of emergency and is more important. It is generally represented by red-related colors. The comfort bus generally belongs to the entertainment system. express. The topology diagram template provides a variety of color templates for selection, and the color scheme of the bus can be changed in different ways.

In the embodiment of the present invention, css and javascript are embedded in the car bus topology map, so that the car bus topology map supports dynamic state change and click events of the electronic control unit. The display state of the node in the vehicle bus topology diagram represents the diagnostic state of the electronic control unit represented by the node. Specifically, different colors can be used to mark different diagnostic states of the electronic control unit. The diagnostic status of the electronic control unit includes no communication, no response, normal communication with fault codes, etc., which can be distinguished by changing the color of the electronic control unit. In the case of communication fault codes, it can also indicate how many communication fault codes there are. The RDK unit in Figure 2 indicates that there are 3 communication fault codes.

If there is an electronic control unit connected to a local area network bus in the electronic control unit list, a node used to represent the electronic control unit in the vehicle bus topology map displays an identifier used to represent that the local area network bus is connected. If the electronic control unit is also connected with other local area network bus, such as LIN bus, it can also be marked on the unit, as shown in Figure 8. The dynamic interaction function of the electronic control unit is realized by css and javascript. By embedding css and javascript in svg, it supports the change of the cell style, and the cell click event support. In this way, the car system can be directly entered from the cell. Specifically, after generating and displaying the vehicle bus topology diagram, a control instruction input by a user to a node in the vehicle bus topology diagram is received; and a display interface related to the electronic control unit represented by the node is displayed according to the control instruction.

In this embodiment of the present invention, the electronic device may be provided with a self-learning function, that is, to obtain the bus topology relationship of a car of a new model, a new brand, or a new vehicle year, and classify it into a certain topology according to the obtained new bus topology relationship diagram template, or, generate a new topology diagram template. Further, the electronic device can be adapted to a new adaptation scenario, thereby generating a topology map in time.

In the embodiment of the present invention, the electronic device can be used in the early stage of the classification of the topology relationship of the vehicle bus and the learning stage of the generation of the topology map template. The learning program can generate the topology map template, and can also determine the corresponding relationship between the vehicle information and the topology map template. . A complete method for generating a topology map of automobile bus is shown in Figure 9. The automobile data of each brand of automobile is grouped, and the models with the same or very similar bus connection relationship are grouped into the same group, and the same topology map is generated to generate the topology Diagram template. To obtain the car bus topology map of a certain car, query the electronic control unit of the car, and combine the queried electronic control unit with the topology map template corresponding to the car to generate the car bus topology map. Embed css and javascript in the car bus topology map, render it through the browser or browser controls, support dynamic zooming and dynamic interaction.

FIG. 10 shows a schematic structural diagram of an apparatus for generating a topology map of a vehicle bus according to an embodiment of the present invention. The vehicle bus topology map generating device is applied to vehicle fault diagnosis equipment. As shown in FIG. 10 , the vehicle bus topology map generating device includes: a data acquisition unit 101 , a template determination unit 102 , a topology map generation unit 103 and a dynamic interaction unit 104 . in:

The data acquisition unit 101 is configured to acquire vehicle information of the car and a list of electronic control units configured on the car; the template determination unit 102 is configured to determine a topology map template corresponding to the vehicle information according to the vehicle information, wherein the The topology map template is classified according to the connection characteristics, the connection characteristics include the connection relationship of nodes and the connection relationship of the bus, the nodes are used to represent the electronic control unit and the diagnostic interface with external equipment; the topology map generation unit 103 is used for according to. The list of electronic control units configured in the car and the topology map template generate and display the car bus topology map.

In an optional manner, the topology map generating unit 103 is configured to: map the electronic control units in the list of electronic control units configured in the car to the nodes of the topology map template, so as to generate and display the car bus Topology.

In an optional manner, the topology map generating unit 103 is further configured to: if the number of electronic control units in the electronic control unit list is less than the number of the nodes, adjust the number of the nodes in the topology map layout in a template to generate and display a car bus topology diagram.

In an optional manner, the topology map generating unit 103 is further configured to: if there is an electronic control unit connected to a local area network bus in the electronic control unit list, the vehicle bus topology map is used to represent the electronic control unit The node displays an identifier used to characterize the LAN bus connected to it.

In an optional manner, different buses in the vehicle bus topology diagram are distinguished according to display identifiers, the buses include a key bus and a common bus, and the display identifier of the key bus is compared with the common bus. The display logo is obvious.

In an optional manner, the dynamic interaction unit 104 is configured to: receive a control instruction inputted by a user to a node in the vehicle bus topology diagram; display information related to the electronic control unit represented by the node according to the control instruction UI.

An embodiment of the present invention provides a non-volatile computer storage medium, where the computer storage medium stores at least one executable instruction, and the computer-executable instruction can execute the method for generating a vehicle bus topology diagram in any of the above method embodiments.

Executable instructions can specifically be used to cause the processor to perform the following operations:

Obtain the vehicle information of the car and the list of electronic control units configured on the car;

A topology map template corresponding to the vehicle information is determined according to the vehicle information, wherein the topology map template is classified according to connection characteristics, and the connection characteristics include the connection relationship of nodes and the connection relationship of buses. for characterization of electronic control units and diagnostic interfaces with external equipment;

According to the list of electronic control units configured in the car and the topology map template, a car bus topology map is generated and displayed.

In an optional manner, the executable instructions cause the processor to perform the following operations:

The electronic control units in the list of electronic control units configured in the car are mapped to the nodes of the topology map template, so as to generate and display the car bus topology map.

If the number of electronic control units in the electronic control unit list is less than the number of the nodes, the arrangement position of the nodes in the topology map template is adjusted to generate and display a vehicle bus topology map.

If there is an electronic control unit connected to a local area network bus in the electronic control unit list, a node used to represent the electronic control unit in the vehicle bus topology map displays an identifier used to represent that the local area network bus is connected.

receiving a control command input by a user to a node in the vehicle bus topology diagram;

A display interface related to the electronic control unit represented by the node is displayed according to the control instruction.

In the embodiment of the present invention, the vehicle information of the car and the list of electronic control units configured on the car are obtained; the topology map template corresponding to the vehicle information is determined according to the vehicle information, wherein the topology map template is based on the connection feature Classification, the connection characteristics include the connection relationship of nodes and the connection relationship of the bus, the nodes are used to represent the electronic control unit and the diagnostic interface with external equipment; according to the list of electronic control units configured in the car and the topology Diagram template, generate and display the topology diagram of automobile bus, can optimize the layout and arrangement rules, support dynamic change of unit state and click event support, realize the dynamic interaction ability of topology diagram, make the topology diagram concise, easy to implement algorithm, and improve the performance of topology diagram. Use efficiency.

An embodiment of the present invention provides an apparatus for generating a topology map of an automobile bus, which is used for executing the above method for generating a topology map of an automobile bus.

An embodiment of the present invention provides a computer program, which can be invoked by a processor to cause a base station device to execute the method for generating a vehicle bus topology map in any of the foregoing method embodiments.

An embodiment of the present invention provides a computer program product, the computer program product includes a computer program stored on a computer storage medium, the computer program includes program instructions, and when the program instructions are executed by a computer, causes the computer to The method for generating a vehicle bus topology map in any of the above method embodiments is executed.

FIG. 11 shows a schematic structural diagram of a computing device provided by an embodiment of the present invention. The specific embodiment of the present invention does not limit the specific implementation of the device.

As shown in FIG. 11 , the computing device may include: a processor (processor) 1102 , a communications interface (Communications Interface) 1104 , a memory (memory) 1106 , and a communication bus 1108 .

The processor 1102 , the communication interface 1104 , and the memory 1106 communicate with each other through the communication bus 1108 . The communication interface 1104 is used to communicate with network elements of other devices such as clients or other servers. The processor 1102 is configured to execute the program 1110, and specifically may execute the relevant steps in the above-mentioned embodiments of the method for generating a bus topology map of an automobile.

Specifically, the program 1110 may include program code including computer operation instructions.

The processor 1102 may be a central processing unit (CPU), or an application specific integrated circuit (ASIC), or one or each integrated circuit configured to implement an embodiment of the present invention. One or each processor included in the device may be the same type of processor, such as one or each CPU; or may be different types of processors, such as one or each CPU and one or each ASIC.

The memory 1106 is used to store the program 1110 . Memory 1106 may include high-speed RAM memory, and may also include non-volatile memory, such as at least one disk memory.

The program 1110 can specifically be used to cause the processor 1102 to perform the following operations:

In an optional manner, the program 1110 causes the processor to perform the following operations:

The algorithms or displays provided herein are not inherently related to any particular computer, virtual system, or other device. Various general-purpose systems can also be used with teaching based on this. The structure required to construct such a system is apparent from the above description. Furthermore, embodiments of the present invention are not directed to any particular programming language. It is to be understood that various programming languages may be used to implement the inventions described herein, and that the descriptions of specific languages above are intended to disclose the best mode for carrying out the invention.

In the description provided herein, numerous specific details are set forth. It will be understood, however, that embodiments of the invention may be practiced without these specific details. In some instances, well-known methods, structures and techniques have not been shown in detail in order not to obscure an understanding of this description.

Similarly, it is to be understood that, in the above description of exemplary embodiments of the invention, various features of the embodiments of the invention are sometimes grouped together into a single implementation in order to simplify the invention and to aid in the understanding of one or more of the various aspects of the invention. examples, figures, or descriptions thereof. This disclosure, however, should not be construed as reflecting an intention that the invention as claimed requires more features than are expressly recited in each claim.

Those skilled in the art can understand that the modules in the device in the embodiment can be adaptively changed and arranged in one or more devices different from the embodiment. The modules or units or components in the embodiments may be combined into one module or unit or component, and they may be divided into multiple sub-modules or sub-units or sub-assemblies. All features disclosed in this specification (including accompanying claims, abstract and drawings) and any method so disclosed may be employed in any combination unless at least some of such features and/or procedures or elements are mutually exclusive. All processes or units of equipment are combined. Each feature disclosed in this specification (including accompanying claims, abstract and drawings) may be replaced by alternative features serving the same, equivalent or similar purpose, unless expressly stated otherwise.

It should be noted that the above-described embodiments illustrate rather than limit the invention, and that alternative embodiments may be devised by those skilled in the art without departing from the scope of the appended claims. In the claims, any reference signs placed between parentheses shall not be construed as limiting the claim. The word "comprising" does not exclude the presence of elements or steps not listed in a claim. The word "a" or "an" preceding an element does not exclude the presence of a plurality of such elements. The invention can be implemented by means of hardware comprising several different elements and by means of a suitably programmed computer. In a unit claim enumerating several means, several of these means may be embodied by one and the same item of hardware. The use of the words first, second, and third, etc. do not denote any order. These words can be interpreted as names. The steps in the above embodiments should not be construed as limitations on the execution order unless otherwise specified.

Claims

A method for generating an automobile bus topology map, which is applied to automobile fault diagnosis equipment, characterized in that the method comprises:

Obtain the vehicle information of the car and the list of electronic control units configured on the car;

A topology map template corresponding to the vehicle information is determined according to the vehicle information, wherein the topology map template is classified according to connection characteristics, and the connection characteristics include the connection relationship of nodes and the connection relationship of buses. for characterization of electronic control units and diagnostic interfaces with external equipment;

According to the list of electronic control units configured in the car and the topology map template, a car bus topology map is generated and displayed.
The method according to claim 1, wherein the nodes in the topology map template are arranged in a determinant manner, the nodes of different types are arranged in rows, and the nodes include diagnostics according to types Interface nodes, root nodes and child nodes, said nodes of the same type are arranged in columns.
The method according to claim 2, wherein the bus in the topology map template is a row gap between the nodes, a column gap, and a blank space in a row formed by the nodes according to the connection type of the bus. and the position of at least one of the blank spaces in the column formed by the nodes is arranged, and the connection types of the bus include a common bus, a diagnostic bus, a ring bus, an internal bus and a spanning bus.
The method according to claim 3, wherein if the bus is a common bus, the bus is arranged in the column gap, or the bus is arranged in the root node and the child node in the space between the lines.
The method according to claim 3, wherein, if the bus is a diagnostic bus, the bus is arranged in a row gap between the diagnostic interface node and the root node, or, if the bus is If the root node is connected, the bus may be arranged in a space within a column formed by the node, or if the bus is not connected to the root node, the bus may be arranged in a column gap.
The method according to claim 3, wherein if the bus is a ring bus, the horizontal lines of the bus are arranged in the blanks in the row formed by the nodes, and the vertical lines of the bus are arranged in the The blank space in the column formed by the node or the column gap;

Wherein, both ends of the bus are connected to different nodes, or, both ends of the bus are connected to the same node.
The method according to claim 3, wherein if the bus is an internal bus, the bus is arranged in a column gap.
The method according to claim 3, wherein if the bus is a spanning line, the bus is arranged in a row gap, or at the bottom of a row formed by the nodes.
The method according to claim 2, wherein the child nodes include a key node and a common node, the key node is a node connected to at least two buses, and the common node is a node connected to one bus, if the If both the key node and the common node exist in the column formed by the node, the key node is closer to the root node than the common node.
The method according to claim 9, wherein the common nodes connected to the same bus in the topology map template are arranged according to the degree of closeness of the functional relationship, and the common nodes with a high degree of closeness are arranged in the same area .
The method according to claim 9, wherein a bus in the topology map template includes a plurality of vertical lines, and each vertical line in the plurality of vertical lines connects the number of the common nodes to an average within the range.
The method according to claim 1, wherein the position of the node used to characterize the electronic control unit in the topology map template is determined by the weight value of the electronic control unit, and the electronic control unit The weight value of is determined according to the probability of failure of the electronic control unit and the importance of the failure of the electronic control unit.
13. The method according to claim 12, wherein the node for characterizing the electronic control unit with high weight value is located in the main area of the topology map template.
The method of claim 13, wherein the main area is located at the upper left of the topology map template.
The method according to claim 1, wherein the generating and displaying the vehicle bus topology diagram according to the list of electronic control units configured on the vehicle and the topology diagram template, comprising:

The electronic control units in the list of electronic control units configured in the car are mapped to the nodes of the topology map template, so as to generate and display the car bus topology map.
The method of claim 15, wherein the method further comprises:

If the number of electronic control units in the electronic control unit list is less than the number of the nodes, the arrangement position of the nodes in the topology map template is adjusted to generate and display a vehicle bus topology map.
The method according to claim 1, wherein the method further comprises:

If there is an electronic control unit connected to a local area network bus in the electronic control unit list, a node used to represent the electronic control unit in the vehicle bus topology map displays an identifier used to represent that the local area network bus is connected.
The method according to claim 1, wherein the method further comprises:

Different buses in the vehicle bus topology diagram are distinguished according to display marks, the buses include a key bus and a common bus, and the display mark of the key bus is more obvious than the display mark of the common bus.
The method according to claim 1, wherein after generating and displaying the vehicle bus topology diagram, the method further comprises:

receiving a control command input by a user to a node in the vehicle bus topology diagram;

A display interface related to the electronic control unit represented by the node is displayed according to the control instruction.
The method according to claim 1, wherein the display state of the node in the vehicle bus topology map represents the diagnosis state of the electronic control unit represented by the node.
A device for generating an automobile bus topology diagram, applied to an automobile fault diagnosis device, wherein the device comprises:

a data acquisition unit for acquiring vehicle information of the car and a list of electronic control units configured on the car;

A template determination unit, configured to determine a topology map template corresponding to the vehicle information according to the vehicle information, wherein the topology map template is classified according to connection features, and the connection features include connection relationships of nodes and connections of buses relationship, the node is used to characterize the electronic control unit and the diagnostic interface with external equipment;

The topology map generating unit is used for generating and displaying the automobile bus topology map according to the list of electronic control units configured in the automobile and the topology map template.
A computing device, comprising: a processor, a memory, a communication interface, and a communication bus, and the processor, the memory, and the communication interface communicate with each other through the communication bus;

The memory is used to store at least one executable instruction, and the executable instruction causes the processor to execute the steps of the method for generating a vehicle bus topology map according to any one of claims 1-20.
A computer storage medium, wherein at least one executable instruction is stored in the storage medium, and the executable instruction causes the processor to execute the method for generating a vehicle bus topology map according to any one of claims 1-20. step.