CN107465588A - Condition control method, device and the NMS of multiple bus network - Google Patents

Abstract

The present invention relates to a state control method, device and network management system of a multi-way bus network, wherein the state control method of a multi-way bus network implemented from the perspective of a central gateway controller comprises the following steps: When the function controller of the local area network sends a specific network management message in the first sending mode, it analyzes the specific network management message to obtain the local area network ID of the local area network and the current network status requirement information; according to the local area network ID of the local area network and the current The current network status configuration information table is updated; according to the updated network status configuration information table, the status of the corresponding local area network is controlled. The invention solves the requirements of rapid update and function expansion of the current complicated automobile bus network, and simultaneously can solve the real-time awakening requirement of the controller in the automobile bus network.

Description

State control method, device and network management system of multi-channel bus network

technical field

The invention relates to the technical field of automobile bus network management, in particular to a state control method, device and network management system of a multi-channel bus network.

Background technique

As the architecture of automotive electrical appliances becomes more and more complex, the architecture of the vehicle bus network generally includes two or more local area networks, and different local area networks use different network management strategies according to different functional requirements. Network management (wake-up and sleep) in coordination with each local area network has become a difficult point in the design of the vehicle bus network.

At present, most automotive CAN (Controller Area Network) bus networks basically adopt a master-slave network management strategy. The sleep and wake-up of the network is based on the master controller (or gateway controller) to implement the network management strategy of each network segment. This network management strategy has been determined at the early stage of design, and later changes need to change the network management method of the main controller. Therefore, this network management method has poor scalability and compatibility. In other master-master network management strategies, different LANs in the vehicle bus network architecture basically handle wake-up and sleep requirements independently, and the wake-up and sleep requirements of different LANs for other LANs are basically based on actual usage. It is set according to requirements, and platform-based network management cannot be realized. For this reason, the traditional technology proposes a method of performing multiple wake-ups on local area networks through a gateway.

During the implementation process, the inventor found at least the following problems in the traditional technology: the traditional method of using the gateway to wake up the network has great limitations, and it will wake up all networks at the same time, which is not conducive to the expansion of later functions; at the same time, the traditional technology is restricted by network management. The limitation of the message sending method cannot meet the real-time wake-up requirement.

Contents of the invention

Based on this, it is necessary to provide a state control method, device and network management system for a multi-channel bus network in view of the fact that the traditional automobile network wake-up method is not conducive to the expansion of later functions and cannot solve the real-time wake-up requirements.

In order to achieve the above object, on the one hand, an embodiment of the present invention provides a method for controlling the state of a multi-channel bus network implemented from the perspective of a central gateway controller, including the following steps:

When receiving the specific network management message sent by the function controller of the local area network in the vehicle bus network in the first sending mode, analyze the specific network management message to obtain the local area network ID of the local area network and the current network status requirement information; the second A sending method is that the function controller sends a specific network management message in real time when it detects that the current network status requirement of the local area network has changed;

Update the current network status configuration information table according to the LAN ID of the local area network and the current network status requirement information;

According to the updated network state configuration information table, the state of the corresponding local area network is controlled.

On the one hand, an embodiment of the present invention provides a method for controlling the state of a multi-channel bus network implemented from the perspective of a function controller, including the following steps:

When it is detected that the current network state requirement of the accessed local area network changes, a specific network management message is sent to the central gateway controller in the first sending mode; the specific network management message includes the local area network ID of the local area network and the current network state Requirement information: the first sending method is to send a specific network management message in real time when it is detected that the current network state requirement of the local area network changes.

On the one hand, an embodiment of the present invention also provides a state control device for a multi-channel bus network implemented from the perspective of a central gateway controller, including:

The central gateway analysis unit is used to analyze the specific network management message when receiving the specific network management message sent by the function controller of the local area network in the vehicle bus network in the first transmission mode, and obtain the local area network ID of the local area network and the current The network status requirement information; the first sending method is that the function controller sends a specific network management message in real time when it detects that the current network status requirement of the local area network changes;

The central gateway update unit is used to update the current network state configuration information table according to the local area network ID of the local area network and the current network state requirement information;

The central gateway control unit is used to control the state of the corresponding local area network according to the updated network state configuration information table.

On the other hand, an embodiment of the present invention provides a state control device for a multi-channel bus network implemented from the perspective of a function controller, including:

A function controller message sending unit, configured to send a specific network management message to the central gateway controller in a first sending manner when it is detected that the current network status requirement of the accessed local area network has changed;

The specific network management message includes the LAN ID of the local area network and the current network status requirement information; the first sending method is to send the specific network management message in real time when the current network status requirement of the local area network is detected to change.

On the one hand, the present invention provides a network management system of a multi-channel bus network, including a central gateway controller connected to the vehicle bus network, and various function controllers connected to each local area network in the vehicle bus network;

When the function controller detects that the current network status requirements of the connected local area network have changed, it sends a specific network management message to the central gateway controller in the first sending method; the first sending method is that the function controller detects that the local area network Send specific network management messages in real time when the current network status requirements change;

When the central gateway controller receives a specific network management message, it parses the specific network management message to obtain the LAN ID of the local area network and the current network status requirement information; according to the LAN ID of the local area network and the current network status requirement information, the The current network state configuration information table is updated; according to the updated network state configuration information table, the state of the corresponding local area network is controlled.

On the one hand, an embodiment of the present invention provides a computer device, including a memory, a processor, and a computer program stored on the memory and operable on the processor. When the processor executes the program, the above-mentioned implementation from the perspective of the central gateway controller Steps of a state control method for a multi-way bus network.

On the other hand, an embodiment of the present invention also provides a computer-readable storage medium, on which a computer program is stored, and when the program is executed by a processor, the above-mentioned state control of the multi-channel bus network implemented from the perspective of the central gateway controller is realized. method steps.

On the one hand, an embodiment of the present invention provides a computer device, including a memory, a processor, and a computer program stored in the memory and operable on the processor. The steps of the state control method of road bus network.

On the other hand, an embodiment of the present invention also provides a computer-readable storage medium, on which a computer program is stored, and when the program is executed by a processor, the above method for controlling the state of a multi-channel bus network implemented from the perspective of a function controller is implemented. A step of.

The present invention has following advantage and beneficial effect:

The state control method, device and network management system of the multi-channel bus network of the present invention are based on specific network management messages, which carry IDs of all local area networks and corresponding The local area network ID is used to identify the network, and each functional controller sends the ID of the communication network that needs to be maintained to the central gateway controller; the central gateway controller receives all network management messages on the local area network to form a network status configuration table, and the central gateway controls According to the network state configuration table, the device realizes the sleep and wake-up actions of the multi-way bus network. The present invention provides a sleep-wake-up strategy for coordinated vehicle-mounted local area networks. A central gateway controller that connects all local area networks coordinates the wake-up and sleep of multiple bus networks; Communication requirements, send network status information to the central gateway controller; the central gateway controller controls the wake-up and sleep of each connected local area network according to all received network status information. The present invention has better compatibility and expandability, and for different model platforms and function expansion of the same platform, it has no influence on the controller in the network architecture of the original platform; based on the present invention, new controllers can be added By supporting the network control strategy of the present invention, the coordinated sleep and wake-up functions of the local area networks of the vehicle can be realized. The invention solves the requirements of rapid update and function expansion of the current complex automobile bus network, and simultaneously can solve the real-time awakening requirement of the controller in the automobile bus network. The controller sends the required network ID through a specific network management message, without adding additional messages, and without affecting the load rate of the original bus.

Description of drawings

Fig. 1 is the schematic flow chart of embodiment 1 of the state control method of the multi-channel bus network implemented from the perspective of the central gateway controller of the present invention;

Fig. 2 is the schematic flow chart of Embodiment 1 of the state control method of the multi-channel bus network implemented from the perspective of the functional controller of the present invention;

Fig. 3 is the message data field schematic diagram of specific network management message in the state control method of multi-channel bus network of the present invention;

Fig. 4 is the structural schematic diagram of embodiment 1 of the state control device of the multi-channel bus network implemented from the perspective of the central gateway controller of the present invention;

5 is a schematic structural view of embodiment 1 of a state control device for a multi-way bus network implemented from the perspective of a functional controller in the present invention;

FIG. 6 is a schematic structural diagram of Embodiment 1 of the network management system of the multi-way bus network of the present invention;

Fig. 7 is a schematic flow diagram of generating an initial network state configuration information table in the network management system of the multi-channel bus network of the present invention;

Fig. 8 is a schematic diagram of a state real-time control flow in the network management system of the multi-way bus network of the present invention;

FIG. 9 is a schematic diagram of a complete working process of the network management system of the multi-way bus network of the present invention.

detailed description

In order to facilitate the understanding of the present invention, the present invention will be described more fully below with reference to the associated drawings. A preferred embodiment of the invention is shown in the drawings. However, the present invention can be embodied in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that the disclosure of the present invention will be thorough and complete.

Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the technical field of the invention. The terms used herein in the description of the present invention are for the purpose of describing specific embodiments only, and are not intended to limit the present invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

Description of the application scenarios of the state control method, device and network management system of the multi-channel bus network of the present invention:

In order to cope with multiple networks in the vehicle bus network, the traditional technology performs multiple network wake-ups through the gateway; however, the traditional technology either wakes up all networks at the same time when waking up, or wakes up differently according to the characteristics of the nodes when waking up. However, the above method has great limitations, which is not conducive to the expansion of later functions;

In addition, the traditional technology is limited by the way of sending network management messages and cannot meet the real-time wake-up requirements. For example, some network segments are using OSEK (open systems and the corresponding interfaces for automotive electronics: open systems and the corresponding interfaces for automotive electronics) Standard) network management or AUTOSAR (AUTOmotive Open System Architecture: Automotive Open System Architecture) network management, must follow the Token Ring or load-reducing network management message sending method, when a controller needs to wake up another network segment immediately , due to the limitation of the sending mode of the network management message, the real-time requirement cannot be met, and it is difficult to realize the real-time and fast wake-up of the local area network in practical applications.

The present invention configures the information table in the central gateway controller when waking up, and wakes up different networks according to the configuration of the table. On the one hand, it can realize different waking strategies for different networks (instead of waking up together), and on the other hand, it can also realize network fast real-time wake-up. Preferably, the technical solution of the present invention is applicable to the network management of an automobile bus network with 2 or more routes.

Embodiment 1 of the state control method of the multi-channel bus network implemented from the perspective of the central gateway controller of the present invention:

In order to solve the problem that the traditional automobile network wake-up method is not conducive to the expansion of later functions and cannot solve the problem of real-time wake-up requirements, the present invention provides a state control method embodiment 1 of a multi-channel bus network implemented from the perspective of a central gateway controller; 1 is a schematic flow diagram of Embodiment 1 of the state control method of a multi-channel bus network implemented from the perspective of a central gateway controller in the present invention; as shown in Figure 1, the following steps may be included:

Step S110: When receiving the specific network management message sent by the function controller of the local area network in the vehicle bus network in the first transmission mode, analyze the specific network management message to obtain the local area network ID of the local area network and the current network status requirements information; the first sending method is that the function controller sends a specific network management message in real time when it detects that the current network status requirement of the local area network has changed;

Step S120: update the current network state configuration information table according to the LAN ID of the local area network and the current network state requirement information;

Step S130: Control the state of the corresponding local area network according to the updated network state configuration information table.

Specifically, the present invention can coordinate the wake-up and sleep of multiple bus networks through a central gateway controller that connects all local area networks; When a specific network management message is received, the stored network status configuration table information is updated, and each local area network is woken up or required to sleep according to the updated network configuration table.

It should be noted that the central gateway controller can also control the local area networks through network management messages (i.e. network messages); the network management messages of the central gateway controller carry the latest network status configuration table information, and the configuration table information of each local area network. ID and latest status information.

In each embodiment of the present invention, the functional controller accessing the local area network can generate the network ID and the status information of the corresponding network ID according to its own communication requirements, and send a specific network management message to the network. The central network controller forms a network state configuration information table according to the received specific network management message on the network, and the central gateway controller makes the corresponding network enter the wake-up or sleep state according to the network state configuration table.

Among them, the specific network management message contains the local area network ID of the local area network and the current network status requirement information; and the network status requirement information includes two status information of "no request" and "request to wake up", which can be included in the specific network management message respectively. The bit of the network status byte in the network is assigned a corresponding value of 0 or 1; wherein, an assigned value of 1 indicates a request for wake-up, and an assigned value of 0 indicates no request. Further, the network state configuration table can record the local area network ID and corresponding network state information, and the central gateway controller executes the local area network corresponding to the assignment value of 0 in the network state configuration table (that is, the network can be identified according to the local area network ID of each local area network) In the sleep state, the corresponding local area network assigned a value of 1 enters the wake-up state.

When all the networks in the network state configuration table stored by the central gateway controller do not need to be woken up, the central gateway controller closes the last local area network, and then all the networks of the vehicle enter a sleep state. Since the central gateway controller is a controller connected to all local area networks of the vehicle, it can control the status of all local area networks through the central network.

The present invention has better compatibility and expandability, and for different model platforms and function expansion of the same platform, it has no influence on the controller in the network architecture of the original platform; based on the present invention, new controllers can be added By supporting the network control strategy of the present invention, the coordinated sleep and wake-up functions of the local area networks of the vehicle can be realized. Specifically, based on the present invention, one or more controllers can be added on the original platform, wherein, the controller upper limit range that the single-way CAN bus can accommodate is within 30; Platform) compared with the original "controller", the newly added controller can refer to the control unit with different functions inside the car. For example, if some new functions are added to the car, some controllers may need to be added to control these functions. The controllers of these new functions can be connected to the bus network of the previous function controllers as required.

The invention solves the requirements of rapid update and function expansion of the current complex automobile bus network, and simultaneously can solve the real-time awakening requirement of the controller in the automobile bus network. Wherein, because the first sending method is that the functional controller sends a specific network management message in real time when it detects that the current network status requirement of the local area network changes (that is, the network management message of the controller can choose the sending method), so it can be realized The fast wake-up requirement enables the central gateway to quickly wake up the associated LAN.

In a specific embodiment, the current network state configuration information table includes the corresponding LAN ID and network state requirement information of each local area network in the vehicle bus network before this update;

Before the step of receiving the specific network management message sent by the function controller of the local area network in the vehicle bus network in the first sending mode, it also includes the steps of:

When the vehicle bus network is in sleep state, it receives the specific network management messages of each local area network;

Analyze the specific network management message where it is located, and obtain the LAN ID and network status requirement information corresponding to each LAN;

An initial network state configuration information table is generated according to the local area network ID and network state requirement information corresponding to each local area network.

Specifically, when all networks of the vehicle are in a sleep state, any controller (central gateway controller and each functional controller) on each network receives a wake-up event; the wake-up controller (possibly multiple) sends a specific network management message, And carry each local area network ID and each local area network state information. The central gateway controller is awakened by a specific network management message or its own event, receives messages from all local area networks, and analyzes the ID and status requirements information of each local area network to form an initial network status configuration information table. The central gateway controller wakes up the corresponding LAN according to the network status configuration information table;

All controllers on the awakened network must first send a specific network management message, and carry the status requirements information of each local area network ID and local area network; Flexible and timely control of network sleep and wake-up states.

Wherein, when no communication signal is being transmitted on the network, it means that the network is in a sleep state. All controllers on the network will monitor the communication status on the network. Once it is found that there is no signal transmission on the network for a certain period of time, it will judge that the network has entered a sleep state. The controller (except the central gateway controller) can only judge whether the network it accesses is in a sleep state.

In a specific embodiment, according to the updated network state configuration information table, the step of controlling the state of the corresponding local area network includes:

According to the updated network status configuration information table, control the corresponding local area network to enter the wake-up state or enter the sleep state;

Wherein, the steps of controlling the corresponding local area network to enter the wake-up state include:

According to the updated network status configuration information table, confirm the LAN to be awakened;

Send a network message to the local area network to be awakened, and wake up each function controller connected to the local area network to be awakened.

Specifically, controlling the state of the corresponding local area network includes controlling the corresponding local area network to enter the wake-up state or enter the sleep state; in the vehicle network, only the central gateway controller is the controller that accesses all networks, and other controllers only Access to a network (local area network). The central gateway controller can wake up all the controllers in the local area network by sending a network management message in the corresponding local area network.

The central gateway controller controls each local area network. It can control the network status by controlling whether to send network management messages. If it does not send network management messages, it will let the network go to sleep. Wake up all the time.

Embodiment 1 of the state control method of the multi-channel bus network implemented from the perspective of the function controller in the present invention:

Based on the above technical solution of the state control method of the multi-channel bus network implemented from the perspective of the central gateway controller, at the same time, in order to solve the problem that the traditional automobile network wake-up method is not conducive to the expansion of later functions and cannot solve the real-time wake-up requirement, the present invention also provides Embodiment 1 of a state control method of a multi-channel bus network implemented from the perspective of a functional controller; FIG. 2 is a schematic flow chart of embodiment 1 of a state control method of a multi-channel bus network implemented from the perspective of a functional controller; As shown in Figure 2, the following steps may be included:

Step S210: When it is detected that the current network state requirements of the accessed local area network have changed, send a specific network management message to the central gateway controller in the first sending mode; the specific network management message includes the local area network ID of the local area network and the current network status. The network status requirement information; the first sending method is to send a specific network management message in real time when a change in the current network status requirement of the local area network is detected.

Specifically, all functional controllers on the local area network send specific network management messages to the central gateway controller, and carry the status requirements information of each local area network ID and local area network; when the network status requirements of the controller change, immediately (that is, in real time) send an updated network management message to the network, and promptly notify the central gateway controller to update its internally stored network status configuration table.

That is, through the present invention, all controllers participating in network communication can send network status information to the central gateway controller according to their own communication requirements, and the central gateway controller can control the wake-up of connected local area networks according to all received network status information. and sleep. The function controller sends the required network ID through a specific network management message, without adding additional messages, and does not affect the load rate of the original bus;

The present invention provides a multi-channel local area network coordinated wake-up and sleep strategy in the vehicle-mounted network, which has better compatibility and scalability, and meets the current design requirements of the vehicle platform, that is, the selection of vehicle functions does not affect the design of the platform According to the scheme, increasing or decreasing the controllers on the network has no effect on the control on the original network.

In a specific embodiment, when it is detected that the current network state requirements of the accessed local area network have changed, before the step of sending a specific network management message to the central gateway controller in the first sending manner, the steps further include:

When a wake-up event occurs, a specific network management message is generated;

When it is detected that the current network state requirement of the accessed local area network has not changed, the specific network management message is sent to the central gateway controller in the second sending manner.

In a specific embodiment, the wake-up event includes any event or any combination of the following events: receiving a network request, receiving a network message;

The second sending method is to send a specific network management message to the central gateway controller according to the OSEK network management protocol or the AUTOSAR network management protocol.

Specifically, each controller generates a network ID and status information of the corresponding network ID according to its own communication requirements, and sends them to the network through a specific network management message. The central network controller makes the corresponding network enter the wake-up or sleep state according to the received specific network management message on the network.

When a wake-up event occurs (that is, when a network request is received and/or a network message is received), each function controller generates a specific network management message; Fig. 3 is a specific network management in the state control method of the multi-way bus network of the present invention The message data field schematic diagram of message; As shown in Figure 3, be the content of a bus message in the first table of message data field, there are 8 bytes (byte) in the message data field, the second table It is the content of 1 byte, and 1 byte has 8 bits (bit). The first 3 bits are used to store the specific information of the LAN ID, and the latter bit is used to store the status of the LAN. So one byte can place 2 LAN IDs and the corresponding network status, for example: 0010 0111, it means that the network with LAN ID 1 (001) has no wake-up request (0), and the network with LAN ID 2 (011) has wake-up request(1)

Among them, the Message ID is 0x400+NAD; NAD is the address ID assigned by the sending controller, which is used for other purposes of OSEK or AUTOSAR network management.

Further, the network management packet sending strategy in the second sending method is to send specific network management packets according to the master-master distributed network management strategy, which may include the network management strategy of the OSEK standard and the network management strategy of the AUTOSAR standard. That is, the present invention can generate a network wake-up demand signal for currently commonly used master-master distributed network management methods (OSEK, AUTOSAR);

In a specific embodiment, in the process of sending a specific network management message to the central gateway controller in the second sending manner:

When it is detected that the current network status requirement of the local area network has changed, the second sending method is interrupted, and the specific network management message is sent to the central gateway controller in the first sending method.

Specifically, each functional controller can periodically send network management messages according to the current state, or use token ring to send network management messages. When the network status requirements of the controller change, the current sending mode will be interrupted. , and immediately send an updated network management message to the network, and promptly notify the central gateway controller to update the network status configuration table stored inside it. That is, the network management message of each functional controller in the present invention can choose a sending method.

Network management messages have prescribed sending methods in different network management strategies. For example, in OSEK network management, they are sent according to Token Ring, and controllers that do not receive Token Ring cannot send network management messages; and based on the present invention According to the technical solution, the controller can not send the network management message according to the original sending method, but can also allow the network management message to be sent without the token ring, which can realize the fast wake-up requirement.

The network management message transmission mode of the network management protocol in the second transmission mode can include: the OSEK network management message transmission mode, and send the network management message in turn according to the token ring mode; the AUTOSAR network management message transmission mode, such The network management message is to send the network management message periodically, that is, the period is set at the beginning, and then the message is sent in a fixed cycle.

Based on the present invention, the network management message of the function controller can be sent in an optional way, so that the central gateway can quickly wake up the relevant local area network, thereby realizing the fast wake-up requirement.

Embodiment 1 of the state control device of the multi-channel bus network implemented from the perspective of the central gateway controller of the present invention:

Based on the above technical solution of the state control method of the multi-channel bus network implemented from the perspective of the central gateway controller, at the same time, in order to solve the problem that the traditional automobile network wake-up method is not conducive to the expansion of later functions and cannot solve the real-time wake-up requirement, the present invention provides Embodiment 1 of a state control device for a multi-channel bus network implemented from the perspective of a central gateway controller; FIG. 4 is a schematic structural diagram of embodiment 1 of a state control device for a multi-channel bus network implemented from the perspective of a central gateway controller in the present invention; As shown in Figure 4, can include:

The central gateway parsing unit 410 is configured to analyze the specific network management message to obtain the local area network ID and The current network state requirement information; the first sending method is that the function controller sends a specific network management message in real time when detecting that the current network state requirement of the local area network changes;

The central gateway updating unit 420 is used to update the current network state configuration information table according to the local area network ID of the local area network and the current network state requirement information;

The central gateway control unit 430 is configured to control the state of the corresponding local area network according to the updated network state configuration information table.

It should be noted that each unit module in Embodiment 1 of the state control device of the multi-way bus network implemented from the perspective of the central gateway controller in the present invention can correspond to the above-mentioned state of the multi-way bus network implemented from the perspective of the central gateway controller Each step of the control method will not be repeated here.

On the one hand, an embodiment of the present invention provides a computer device, including a memory, a processor, and a computer program stored on the memory and operable on the processor. When the processor executes the program, the above-mentioned implementation from the perspective of the central gateway controller Steps of a state control method for a multi-way bus network.

On the other hand, an embodiment of the present invention also provides a computer-readable storage medium, on which a computer program is stored, and when the program is executed by a processor, the above-mentioned state control of the multi-channel bus network implemented from the perspective of the central gateway controller is realized. method steps.

Embodiment 1 of the state control device of the multi-channel bus network implemented from the perspective of the function controller of the present invention:

Based on the above technical solution of the state control method of the multi-channel bus network implemented from the perspective of the function controller, at the same time, in order to solve the problem that the traditional automobile network wake-up method is not conducive to the expansion of later functions and cannot solve the real-time wake-up requirement, the present invention provides a A kind of state control device embodiment 1 of the multi-channel bus network implemented from the functional controller angle; Fig. 5 is the structural representation of the state control device embodiment 1 of the multi-channel bus network implemented from the functional controller point of view of the present invention; Fig. 5 As shown, can include:

The function controller message sending unit 510 is configured to send a specific network management message to the central gateway controller in a first sending manner when it is detected that the current network status requirement of the accessed local area network has changed;

The specific network management message includes the LAN ID of the local area network and the current network status requirement information; the first sending method is to send the specific network management message in real time when the current network status requirement of the local area network is detected to change.

It should be noted that each unit module in Embodiment 1 of the state control device for a multi-way bus network implemented from the perspective of a function controller in the present invention can correspond to the implementation of the above-mentioned state control method for a multi-way bus network implemented from the perspective of a function controller The steps are not repeated here.

On the one hand, an embodiment of the present invention provides a computer device, including a memory, a processor, and a computer program stored in the memory and operable on the processor. The step of the state control method of road bus network.

On the other hand, an embodiment of the present invention also provides a computer-readable storage medium, on which a computer program is stored, and when the program is executed by a processor, the above method for controlling the state of a multi-channel bus network implemented from the perspective of a function controller is implemented. A step of.

Embodiment 1 of the network management system of the multi-way bus network of the present invention:

In order to solve the problem that the traditional automobile network wake-up method is not conducive to the expansion of later functions, and cannot solve the problem of real-time wake-up requirements, the present invention provides a network management system embodiment 1 of a multi-channel bus network; Figure 6 shows the multi-channel bus network of the present invention A schematic structural diagram of the network management system embodiment 1; as shown in Figure 6, it may include a central gateway controller connected to the vehicle bus network, and various function controllers connected to each local area network in the vehicle bus network;

When the function controller detects that the current network status requirements of the connected local area network have changed, it sends a specific network management message to the central gateway controller in the first sending method; the first sending method is that the function controller detects that the local area network Send specific network management messages in real time when the current network status requirements change;

When the central gateway controller receives a specific network management message, it parses the specific network management message to obtain the LAN ID of the local area network and the current network status requirement information; according to the LAN ID of the local area network and the current network status requirement information, the The current network state configuration information table is updated; according to the updated network state configuration information table, the state of the corresponding local area network is controlled.

Specifically, FIG. 7 is a schematic flow diagram of generating an initial network status configuration information table in the network management system of the multi-channel bus network of the present invention. As shown in FIG. 7, the following steps 1-4 may be included:

Step 1: All networks of the vehicle are in a sleep state, and any controller on the network (including function controllers and central gateway controllers) receives a wake-up event;

Step 2: Each awakened function controller (possibly multiple) sends a specific network management message to the central gateway controller, carrying the ID of each local area network and the state information of each local area network.

Step 3: The central gateway controller is awakened by a specific network management message or its own event, receives messages from all local area networks, and analyzes the ID and status requirements information of each local area network to form an initial network status configuration information table.

Step 4: The central gateway controller wakes up the corresponding local area network according to the initial network status configuration information table;

Fig. 8 is a schematic diagram of the state real-time control flow in the network management system of the multi-way bus network of the present invention, as shown in Fig. 8, may include the following steps 5-7:

Step 5: When a wake-up event occurs, all function controllers on each local area network generate a specific network management message, send a specific network management message, and carry each local area network ID and status requirement information of the local area network;

Step 6: Every time the central gateway controller receives a specific network management message, it updates the stored network status configuration table information, and wakes up or requires a sleep operation for each LAN according to the updated network configuration table, and the central gateway controller Each local area network is also controlled through a specific network management message, and the network management message of the central gateway carries the latest network status configuration table information, and the ID and latest status information of each local area network.

Step 7: All wake-up function controllers periodically send network management messages according to the current state, or use token ring to send network management messages. When the network status requirements of the controller change, the current sending mode is interrupted , and immediately send an updated network management message to the network, and promptly notify the central gateway controller to update the network status configuration table stored inside it.

Fig. 9 is a schematic diagram of a complete workflow of the network management system of the multi-way bus network of the present invention, as shown in Fig. 9, may include the following steps 1-8:

Step 1: All networks of the vehicle are in a sleep state, and any controller on the network (including function controllers and central gateway controllers) receives a wake-up event;

Step 2: Each awakened function controller (possibly multiple) sends a specific network management message to the central gateway controller, carrying the ID of each local area network and the state information of each local area network.

Step 3: The central gateway controller is awakened by a specific network management message or its own event, receives messages from all local area networks, and analyzes the ID and status requirements information of each local area network to form an initial network status configuration information table.

Step 4: The central gateway controller wakes up the corresponding local area network according to the initial network status configuration information table;

Step 5: All function controllers on the awakened local area network must first send a specific network management message, and carry the status requirement information of each local area network ID and local area network; (in practical applications, after step 5, it is a dynamic state The control process, that is, after a real-time network request or wake-up by a real-time network message, it is necessary to determine whether the network status requirement has changed);

Step 6: Every time the central gateway controller receives a specific network management message, it updates the stored network status configuration table information, and wakes up or requires a sleep operation for each LAN according to the updated network configuration table, and the central gateway controller Each local area network is also controlled through a specific network management message, and the network management message of the central gateway carries the latest network status configuration table information, and the ID and latest status information of each local area network.

Step 7: All wake-up function controllers periodically send network management messages according to the current state, or use token ring to send network management messages. When the network status requirements of the controller change, the current sending mode is interrupted , and immediately send an updated network management message to the network, and promptly notify the central gateway controller to update the network status configuration table stored inside it.

Step 8: When all the networks in the network state configuration table stored by the central gateway controller do not need to be woken up, the central gateway controller closes the last local area network, and then all the networks of the vehicle enter a sleep state.

The network management system of the multi-channel bus network of the present invention is based on a specific network management message, which carries IDs of all local area networks and corresponding network demand information (wake up, sleepable), and identifies the network by assigning each local area network ID , each functional controller will need to keep the ID of the communication network and send it to the central gateway controller; the central gateway controller receives all network management messages on the local area network to form a network status configuration table, and the central gateway controller configures the network according to the network status The table implements the sleep and wake-up actions of the multi-way bus network. The present invention provides a sleep-wake-up strategy for coordinated vehicle-mounted local area networks. A central gateway controller that connects all local area networks coordinates the wake-up and sleep of multiple bus networks; Communication requirements, send network status information to the central gateway controller; the central gateway controller controls the wake-up and sleep of each connected local area network according to all received network status information. The present invention has better compatibility and expandability, and for different model platforms and function expansion of the same platform, it has no influence on the controller in the network architecture of the original platform; based on the present invention, new controllers can be added By supporting the network control strategy of the present invention, the coordinated sleep and wake-up functions of the local area networks of the vehicle can be realized. The invention solves the requirements of rapid update and function expansion of the current complex automobile bus network, and simultaneously can solve the real-time awakening requirement of the controller in the automobile bus network. The controller sends the required network ID through a specific network management message, without adding additional messages, and without affecting the load rate of the original bus.

The technical features of the above-mentioned embodiments can be combined arbitrarily. To make the description concise, all possible combinations of the technical features in the above-mentioned embodiments are not described. However, as long as there is no contradiction in the combination of these technical features, should be considered as within the scope of this specification. Those of ordinary skill in the art can understand that all or part of the steps in the method of the above-mentioned embodiments can be completed by instructing related hardware through a program, and the program can be stored in a computer-readable storage medium, and the program can be executed during execution When, including the steps described in the above method, the storage medium, such as: ROM/RAM, magnetic disk, optical disk, etc.

The above-mentioned embodiments only express several implementation modes of the present invention, and the descriptions thereof are relatively specific and detailed, but should not be construed as limiting the patent scope of the invention. It should be pointed out that those skilled in the art can make several modifications and improvements without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent for the present invention should be based on the appended claims.

Claims (13)

1. a state control method of multi-way bus network, is characterized in that, comprises the following steps: When receiving the specific network management message sent by the function controller of the local area network in the vehicle bus network in the first transmission mode, analyze the specific network management message to obtain the local area network ID of the local area network and the current network status Requirement information; the first sending method is that the function controller sends the specific network management message in real time when detecting that the current network status requirement of the local area network changes; updating the current network state configuration information table according to the local area network ID of the local area network and the current network state requirement information; According to the updated network state configuration information table, the state of the corresponding local area network is controlled. 2. The state control method of the multi-channel bus network according to claim 1, wherein the current network state configuration information table includes the corresponding local area network of each local area network in the vehicle bus network before this update ID and network status requirements information; Before the step of receiving the specific network management message sent by the local area network in the vehicle bus network in the first sending mode, it also includes the steps: When the vehicle bus network is in a sleep state, receiving the specific network management messages of each of the local area networks; Analyzing the management message of the specific network where it is located to obtain the LAN ID and network status requirement information corresponding to each of the local area networks; An initial network state configuration information table is generated according to the local area network ID and network state requirement information corresponding to each of the local area networks. 3. according to the state control method of claim 1 or 2 described multi-way bus network, it is characterized in that, according to the updated network state configuration information table, the step of controlling the state of corresponding local area network comprises: According to the updated network status configuration information table, control the corresponding local area network to enter the wake-up state or enter the sleep state; Wherein, the steps of controlling the corresponding local area network to enter the wake-up state include: According to the updated network status configuration information table, confirm the local area network to be awakened; Send a network message to the local area network to be awakened, and wake up each function controller connected to the local area network to be awakened. 4. a state control method of multi-way bus network, is characterized in that, comprises the following steps: Sending a specific network management message to the central gateway controller in a first sending manner when it is detected that the current network status requirement of the accessed local area network has changed; The specific network management message includes the local area network ID of the local area network and the current network state requirement information; the first sending method is to send the real-time network state requirement information of the local area network when a change is detected. Specific network management messages. 5. The state control method of the multi-way bus network according to claim 4, characterized in that, when the current network state requirements of the local area network detected to be accessed change, the first transmission mode is sent to the central gateway controller The steps for the specific network management message also include the steps before: When a wake-up event occurs, generate the specific network management message; When it is detected that the current network status requirement of the accessed local area network has not changed, send the specific network management message to the central gateway controller in a second sending manner; Wherein, the wake-up event is receiving a network request or/and receiving a network message, and the second sending method is sending the specific network management to the central gateway controller according to the OSEK network management protocol or the AUTOSAR network management protocol message. 6. The state control method of the multi-way bus network according to claim 5, wherein, in the process of sending the specific network management message to the central gateway controller in the second sending mode, further comprising: When it is detected that the current network state requirement of the local area network changes, the second sending manner is interrupted, and a specific network management message is sent to the central gateway controller in the first sending manner. 7. A state control device of a multi-way bus network, characterized in that, comprising: The central gateway analysis unit is used to analyze the specific network management message when receiving the specific network management message sent by the function controller of the local area network in the vehicle bus network in the first transmission mode, and obtain the local area network Local area network ID and current network state requirement information; the first sending method is that the function controller sends the specific network management message in real time when detecting that the current network state requirement of the local area network changes; The central gateway update unit is used to update the current network state configuration information table according to the local area network ID of the local area network and the current network state requirement information; The central gateway control unit is used to control the state of the corresponding local area network according to the updated network state configuration information table. 8. A state control device of a multi-way bus network, characterized in that, comprising: A function controller message sending unit, configured to send a specific network management message to the central gateway controller in a first sending manner when it is detected that the current network status requirement of the accessed local area network has changed; The specific network management message includes the local area network ID of the local area network and the current network state requirement information; the first sending method is to send the real-time network state requirement information of the local area network when a change is detected. Specific network management messages. 9. A network management system of a multi-channel bus network, characterized in that it includes a central gateway controller that accesses the vehicle bus network, and accesses each function controller of each local area network in the vehicle bus network; When the function controller detects that the current network state requirements of the accessed local area network have changed, it sends a specific network management message to the central gateway controller in a first sending method; the first sending method is that the function control The device sends the specific network management message in real time when detecting that the current network status requirement of the local area network changes; When the central gateway controller receives the specific network management message, it parses the specific network management message to obtain the local area network ID of the local area network and the current network status requirement information; according to the local area network of the local area network The ID and the current network state requirement information update the current network state configuration information table; according to the updated network state configuration information table, the state of the corresponding local area network is controlled. 10. the network management system of multi-way bus network according to claim 9, is characterized in that, When a wake-up event occurs, the function controller generates the specific network management message; and when it detects that the current network status requirement of the accessed local area network has not changed, it sends the control message to the central gateway in a second sending manner. The device sends the specific network management message; Wherein, the wake-up event is receiving a network request or/and receiving a network message, and the second sending method is sending the specific network management to the central gateway controller according to the OSEK network management protocol or the AUTOSAR network management protocol message. 11. A computer device, comprising a memory, a processor, and a computer program stored on the memory and operable on the processor, characterized in that, when the processor executes the program, any one of claims 1-3 is realized steps of the method described in the item. 12. A computer-readable storage medium, on which a computer program is stored, wherein, when the program is executed by a processor, the steps of the method according to any one of claims 1-6 are implemented. 13. A computer device, comprising a memory, a processor, and a computer program stored on the memory and operable on the processor, characterized in that, when the processor executes the program, any one of claims 1-6 is realized steps of the method described in the item.