CN116828111A - Vehicle communication network system, vehicle control method and storage medium - Google Patents

Abstract

The present invention relates to the field of automotive electronics, and in particular, to a vehicle communication network system, a vehicle control method, and a storage medium. The system comprises: at least one service controller, an engine compartment domain controller, a vehicle body domain controller and a chassis domain controller, which are respectively corresponding to the intra-domain nodes of the engine compartment domain controller, the vehicle body domain controller and the chassis domain controller; the engine compartment domain controller, the vehicle body domain controller and the chassis domain controller are connected to at least one service controller through a first bus to form a first backbone network; the engine compartment domain controller, the vehicle body domain controller and the chassis domain controller are respectively connected to corresponding intra-domain nodes through a second bus to form a second backbone network. By adopting the vehicle communication network system, the problems of low transmission rate, high packet loss rate, poor reliability and easy interference existing in the existing vehicle communication network system can be solved, the accuracy and the speed of data transmission are improved, and the network requirement of the whole vehicle is met.

Description

Vehicle communication network system, vehicle control method and storage medium

Technical Field

The present invention relates to the field of automotive electronics, and in particular, to a vehicle communication network system, a vehicle control method, and a storage medium.

Background

In recent years, with the deep development of electric, intelligent, networking and sharing of automobiles, the electronic and electric architecture of automobiles is in a deepening stage from a distributed domain controller, and the electronic control units (Electronic Control Unit, ECU) of the entire automobiles are continuously combined and reduced. Based on the service functions of the vehicle, the whole vehicle can be divided into an engine compartment domain controller, a vehicle body domain controller, a chassis domain controller and a plurality of service controllers. And through network communication among the regional controllers, the corresponding service functions of the vehicle are realized.

With the rapid development of automatic driving, new energy and intelligent networking technologies in the automotive field, the conventional vehicle communication network system based on the controller area network (Controller Area Network, CAN)/local area internet (Local Interconnect Network, LIN) bus has the disadvantages of low transmission rate, high packet loss rate, poor reliability, easy interference and the like, so that a vehicle communication network system is needed to solve the disadvantages so as to meet the network requirements of the whole vehicle.

Disclosure of Invention

The invention provides a vehicle communication network system, a vehicle control method and a storage medium, which are used for solving the problems of low transmission rate, high packet loss rate, poor reliability and easy interference existing in the existing vehicle communication network system.

According to an aspect of the present invention, there is provided a vehicle communication network system including:

at least one service controller, an engine compartment domain controller, a vehicle body domain controller and a chassis domain controller, which are respectively corresponding to the intra-domain nodes of the engine compartment domain controller, the vehicle body domain controller and the chassis domain controller;

the engine compartment domain controller, the vehicle body domain controller and the chassis domain controller are connected to at least one service controller through a first bus to form a first backbone network;

the engine compartment domain controller, the vehicle body domain controller and the chassis domain controller are respectively connected to corresponding intra-domain nodes through a second bus to form a second backbone network.

According to another aspect of the present invention, there is provided a vehicle control method applied to a vehicle communication network system, the method comprising:

the control business controller sends out a vehicle control instruction, and the vehicle control instruction is sent to at least one of an engine compartment domain controller, a vehicle body domain controller and a chassis domain controller through a first bus;

and controlling the nodes in the target domain corresponding to the engine compartment domain controller, the vehicle body domain controller and the chassis domain controller to execute the vehicle control instruction.

According to another aspect of the present invention, there is provided a computer-readable storage medium storing computer instructions for causing a processor to execute a vehicle control method according to any one of the embodiments of the present invention.

The vehicle communication network system provided by the embodiment of the invention is characterized in that an engine compartment domain controller, a vehicle body domain controller and a chassis domain controller are connected to at least one service controller through a first bus to form a first backbone network; the engine compartment domain controller, the vehicle body domain controller and the chassis domain controller are respectively connected to corresponding intra-domain nodes through a second bus to form a second backbone network. By adopting the vehicle communication network system, the problems of low transmission rate, high packet loss rate, poor reliability and easy interference existing in the existing vehicle communication network system can be solved, the accuracy and the speed of data transmission are improved, and the network requirement of the whole vehicle is met.

It should be understood that the description in this section is not intended to identify key or critical features of the embodiments of the invention or to delineate the scope of the invention. Other features of the present invention will become apparent from the description that follows.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the description of the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic diagram of a vehicle communication network system according to a first embodiment of the present invention;

fig. 2 is a schematic diagram of a vehicle communication network system according to a second embodiment of the present invention;

fig. 3 is a schematic diagram of an ethernet communication design architecture according to a second embodiment of the present invention;

fig. 4 is a schematic diagram of an ethernet power scheme according to a second embodiment of the present invention;

fig. 5 is a flowchart of a vehicle control method according to a third embodiment of the present invention;

fig. 6 is a flowchart of a vehicle control method according to a fourth embodiment of the present invention;

fig. 7 is a flowchart of a vehicle control method according to a fifth embodiment of the present invention;

fig. 8 is a flowchart of a vehicle control method according to a sixth embodiment of the invention;

fig. 9 is a schematic diagram of a CAN circuit according to a sixth embodiment of the present invention.

Detailed Description

In order that those skilled in the art will better understand the present invention, a technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in which it is apparent that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present invention without making any inventive effort, shall fall within the scope of the present invention.

It should be noted that the terms "first," "second," and the like in the description and the claims of the present invention and the above figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate such that the embodiments of the invention described herein may be implemented in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

Example 1

Fig. 1 is a schematic diagram of a vehicle communication network system according to an embodiment of the invention. As shown in fig. 1, the vehicle communication network system includes: at least one service controller, an engine compartment domain controller, a vehicle body domain controller and a chassis domain controller, which are respectively corresponding to the intra-domain nodes of the engine compartment domain controller, the vehicle body domain controller and the chassis domain controller; the engine compartment domain controller, the vehicle body domain controller and the chassis domain controller are connected to at least one service controller through a first bus to form a first backbone network; the engine compartment domain controller, the vehicle body domain controller and the chassis domain controller are respectively connected to corresponding intra-domain nodes through a second bus to form a second backbone network.

In the embodiment of the present invention, the service controller may be understood as an area controller divided based on a service function of a vehicle, and the service controller may include: a power domain core controller, an advanced autopilot domain controller, a cockpit domain controller, etc. The engine compartment domain controller may refer to a domain controller for controlling vehicle control functions of an engine, inertial navigation, redundant braking, steering assist, and the like of a vehicle. The vehicle body domain controller may refer to a domain controller for controlling vehicle control functions such as a lighting system, a central control door lock, a low frequency antenna, a digital key, a gateway, and the like of a vehicle. The chassis domain controller may refer to a domain controller for controlling vehicle transverse, longitudinal and vertical related control functions such as whole vehicle braking, steering and suspension of a vehicle. An in-domain node may be understood as a controller for controlling a vehicle to perform a certain service function, and the in-domain node may be controlled by a corresponding engine compartment domain controller, a body domain controller, and a chassis domain controller, respectively, and the in-domain node corresponding to the engine compartment domain controller may include: front motor control unit, combination inertial navigation system, redundant braking control unit, steering helping hand system etc. the intradomain node that automobile body domain controller corresponds can include: combination switch, digital key, radio frequency transceiver, right front door controller etc., the intradomain node that chassis domain controller corresponds can include: a back tail lamp system, a back motor control unit, a power amplifier system, a charger system and the like. The first bus may refer to a bus for communicatively connecting the engine compartment domain controller, the vehicle body domain controller, and the chassis domain controller with the service controller, and the first bus may include: a Controller Area Network (CAN) bus, a variable rate controller area network (CAN with flexibledata rate, CAN FD) bus, an on-board ethernet, etc. The first backbone network may refer to a vehicle communication network formed by a first bus between the engine compartment domain controller, the vehicle body domain controller, and the chassis domain controller and the service controller. The second bus may refer to a bus for the engine compartment domain controller, the vehicle body domain controller, and the chassis domain controller to be communicatively connected with corresponding intra-domain nodes, respectively, and the second bus may include: CAN bus, CAN FD bus, on-board ethernet, etc. The second backbone network may refer to a vehicle communication network formed by a second bus between the engine compartment domain controller, the vehicle body domain controller, and the chassis domain controller and the corresponding intra-domain nodes.

Specifically, in the vehicle communication network system provided in the first embodiment of the present invention, the whole vehicle may be divided into three intelligent area controllers, that is, an engine compartment controller, a vehicle body domain controller, and a chassis domain controller, and at least one service controller is divided based on service functions of the vehicle; meanwhile, the engine compartment domain controller, the body domain controller and the chassis domain controller may respectively control one or more intra-domain nodes, and the intra-domain nodes may be used to control the vehicle to implement a specific service function, for example: steering assist control, right front door control, rear motor control, etc.; the engine compartment domain controller, the vehicle body domain controller, the chassis domain controller and the service controller form a first backbone network through a first bus, the engine compartment domain controller, the vehicle body domain controller, the chassis domain controller and corresponding intra-domain nodes form a second backbone network through a second bus, and the first bus and the second bus can comprise: CAN bus, CAN FD bus, on-board ethernet, etc.

The vehicle communication network system provided by the embodiment of the invention is characterized in that an engine compartment domain controller, a vehicle body domain controller and a chassis domain controller are connected to at least one service controller through a first bus to form a first backbone network; the engine compartment domain controller, the vehicle body domain controller and the chassis domain controller are respectively connected to corresponding intra-domain nodes through a second bus to form a second backbone network. By adopting the vehicle communication network system, the problems of low transmission rate, high packet loss rate, poor reliability and easy interference existing in the existing vehicle communication network system can be solved, the accuracy and the speed of data transmission are improved, and the network requirement of the whole vehicle is met.

Example two

Fig. 2 is a schematic diagram of a vehicle communication network system according to a second embodiment of the present invention, which is further optimized and expanded based on the above embodiment, and may be combined with each of the optional technical solutions in the above embodiment. As shown in fig. 2, a vehicle communication network system according to a second embodiment of the present invention includes: three service controllers: power domain core controller, advanced autopilot domain controller, cockpit domain controller, three intelligent zone controllers: engine compartment domain controller, body domain controller, chassis domain controller, and intra-domain nodes corresponding to the engine compartment domain controller: front motor control unit, combination inertial navigation system, redundant braking control unit, power assisted steering system, the intradomain node of corresponding automobile body domain controller: combination switch, digital key, radio frequency transceiver, right front door controller, the intradomain node of corresponding chassis domain controller: the system comprises a back tail lamp system, a back motor control unit, a power amplifier system and a charger system;

the engine compartment controller, the vehicle body domain controller and the chassis domain controller are respectively in communication connection with the power domain core controller, the advanced automatic driving domain controller and the cabin domain controller by a first controller local area network bus and/or a first variable rate controller local area network bus; the engine compartment domain controller, the vehicle body domain controller and the chassis domain controller are respectively in communication connection with corresponding intra-domain nodes through a second controller local area network bus and/or a second variable rate controller local area network bus; the engine compartment domain controller is respectively connected with the power domain core controller and the advanced autopilot domain controller by a 100base-T1 Ethernet communication; the vehicle body domain controller is respectively connected with the advanced autopilot domain controller and the cockpit domain controller by a way of 100base-T1 Ethernet communication, and the vehicle body domain controller is connected with the cockpit domain controller by a way of 1000base-T1 Ethernet communication; the chassis domain controller and the power domain core controller are also connected by a 100base-T1 Ethernet.

In the embodiment of the present invention, the first Controller Area Network (CAN) bus and the first variable rate controller area network (CAN FD) bus may refer to a CAN bus and a CAN FD bus, which are respectively in communication connection with the engine domain controller, the vehicle domain controller, and the chassis domain controller, and the power domain core controller, the advanced autopilot domain controller, and the cabin domain controller, respectively. The second Controller Area Network (CAN) bus and the second variable rate controller area network (CAN FD) bus may refer to a CAN bus and a CAN FD bus, respectively, to which the engine compartment domain controller, the body domain controller, and the chassis domain controller are communicatively connected with corresponding intra-domain nodes, respectively. 100base-T1 Ethernet and 100base-T1 Ethernet may refer to hundred megabytes of onboard Ethernet and gigabit of onboard Ethernet, respectively.

Specifically, in the vehicle communication network system provided in the second embodiment of the present invention, the whole vehicle may be divided into three intelligent area controllers, that is, an engine domain controller, a vehicle body domain controller, and a chassis domain controller, and three service controllers, that is, a power domain core controller, an advanced autopilot domain controller, and a cabin domain controller, are divided based on service functions of the vehicle, where the engine domain controller, the vehicle body domain controller, and the chassis domain controller are respectively in communication connection with the power domain core controller, the advanced autopilot domain controller, and the cabin domain controller through a first CAN bus and/or a first CAN FD bus; the engine compartment domain controller, the vehicle body domain controller and the chassis domain controller are respectively in communication connection with corresponding intra-domain nodes through a second CAN bus and/or a second CAN FD bus; in order to meet the higher network demand requirements of all intelligent area controllers, the engine compartment domain controller is respectively connected with the power domain core controller and the advanced autopilot domain controller by 100base-T1 Ethernet communication; the vehicle body domain controller is respectively connected with the advanced autopilot domain controller and the cockpit domain controller by a way of 100base-T1 Ethernet communication, and in addition, the vehicle body domain controller and the cockpit domain controller can be connected by a way of 1000base-T1 Ethernet communication because of larger data volume of network communication between the vehicle body domain controller and the cockpit domain controller; the chassis domain controller and the power domain core controller can also comprise a path of 100base-T1 Ethernet communication connection.

Fig. 3 is a schematic diagram of an ethernet communication design architecture according to a second embodiment of the present invention. As shown in fig. 3, the following two reservation schemes may be respectively made for the medium access control (Media Access Control, MAC) pins of the micro control units (Microcontroller Unit, MCU) in each intra-domain node: the scheme I is that a single-way 100base-T1 is adopted to be connected to a singlechip through a simple medium independent interface (Reduced Media Independent Interface, RMII); in a second scheme, one Ethernet switch chip is hung outside through a simple gigabit media independent interface (Reduced Gigabit Media Independent Interface, RGMII), 5 hundred megaphysical (PHY) layers integrated inside the switch chip are utilized for communication, and 1 gigabit PHY is hung outside through a serial gigabit media independent interface (Serial Gigabit Media Independent Interface, SGMII) of the switch chip for transmission of big data, wherein a boot starting program of the Ethernet switch chip is stored in FLASH connected through a queue serial peripheral interface (Queued Serial Peripheral Interface, QSPI).

Further, on the basis of the embodiment of the invention, the engine compartment domain controller, the vehicle body domain controller and the chassis domain controller in the embodiment of the invention are all 3.3V single-chip microcomputer control systems, wherein the 3.3V single-chip microcomputer control systems can adopt a 25MHz single-chip microcomputer minimum system design.

Further, on the basis of the above embodiment of the present invention, in order to facilitate fault location of the engine compartment domain controller, the vehicle body domain controller and the chassis domain controller, the power supply of the ethernet part may be independent of the power supply generated by the power management integrated circuit (Power Management Integrated Circuit, PMIC) and the system base chip (System Basis Chip, SBC), and the system does not need ethernet communication in the sleep state, so on the design of the power supply part, the power supply may be divided into 5 parts as shown in fig. 4 according to the pin requirements of the chip, so as to implement a sleep wake-up scheme based on the ethernet power supply.

The vehicle communication network system provided by the embodiment of the invention is characterized in that an engine compartment domain controller, a vehicle body domain controller and a chassis domain controller are respectively in communication connection with a power domain core controller, an advanced automatic driving domain controller and a cabin domain controller by a first controller local area network bus and/or a first variable rate controller local area network bus; the engine compartment domain controller, the vehicle body domain controller and the chassis domain controller are respectively in communication connection with corresponding intra-domain nodes through a second controller local area network bus and/or a second variable rate controller local area network bus; the engine compartment domain controller is respectively connected with the power domain core controller and the advanced autopilot domain controller by a 100base-T1 Ethernet communication; the vehicle body domain controller is respectively connected with the advanced autopilot domain controller and the cockpit domain controller by a way of 100base-T1 Ethernet communication, and the vehicle body domain controller is connected with the cockpit domain controller by a way of 1000base-T1 Ethernet communication; the chassis domain controller and the power domain core controller are also connected by a 100base-T1 Ethernet. By adopting the vehicle communication network system, the problems of low transmission rate, high packet loss rate, poor reliability and easy interference existing in the existing vehicle communication network system can be solved, the accuracy and the speed of data transmission are improved, and the network requirement of the whole vehicle is met.

Example III

Fig. 5 is a flowchart of a vehicle control method according to a third embodiment of the present invention, where the present embodiment is applicable to a case of controlling a vehicle, and the vehicle control method may be applied to a vehicle communication network system. As shown in fig. 5, a vehicle control method provided in a third embodiment of the present invention specifically includes the following steps:

s310, the control service controller sends out a vehicle control instruction, and the vehicle control instruction is sent to at least one of an engine compartment domain controller, a vehicle body domain controller and a chassis domain controller through a first bus.

The vehicle control command may refer to a command for controlling the vehicle to perform a specific operation, and the vehicle control command may include: vehicle braking commands, vehicle steering commands, sleep wake commands, etc.

In the embodiment of the invention, the service controller in the vehicle communication network system can be controlled to send the vehicle control command, and the vehicle control command is sent to at least one of the engine compartment domain controller, the vehicle body domain controller and the chassis domain controller through the first bus. In a specific embodiment, taking parking brake of a vehicle as an example, a power domain core controller in the service controller can be controlled to send a vehicle control command for the parking brake, and the vehicle control command is sent to a chassis domain controller through a first bus.

It may be understood that the vehicle control instruction in the embodiment of the present invention may be sent by the service controller only as an example, and in practical application, may also be sent by a host computer, an industrial personal computer, etc., which is not limited in the embodiment of the present invention.

S320, controlling nodes in the target domains corresponding to the engine compartment domain controller, the vehicle body domain controller and the chassis domain controller to execute vehicle control instructions.

The target intra-domain node may refer to an intra-domain node for executing a vehicle control instruction.

In the embodiment of the invention, after at least one of the engine compartment domain controller, the vehicle body domain controller and the chassis domain controller monitors the vehicle control instruction through the first bus, the vehicle control instruction can be forwarded to the corresponding node in the target domain through the second bus, so that the node in the target domain is controlled to execute the vehicle control instruction. In a specific embodiment, taking the above vehicle parking brake as an example, after the chassis domain controller monitors a vehicle control command for parking brake through the first bus, the vehicle control command can be forwarded to a node in the target domain, namely an electronic parking controller (Electrical Parking Brake, EPB) through the second bus, and then the electronic parking controller controls the EPB valve mounted on the chassis of the vehicle to act, so as to control each wheel of brake air chamber to release the parking brake air pressure, thereby realizing the parking brake control of the vehicle.

According to the technical scheme, the control business controller sends the vehicle control instruction, the vehicle control instruction is sent to at least one of the engine compartment domain controller, the vehicle body domain controller and the chassis domain controller through the first bus, and the nodes in the target domains corresponding to the engine compartment domain controller, the vehicle body domain controller and the chassis domain controller are controlled to execute the vehicle control instruction. According to the embodiment of the invention, the vehicle communication network system controls the service controller to send the vehicle control instruction, so that the engine compartment domain controller, the vehicle body domain controller and the chassis domain controller are controlled to execute the vehicle control instruction corresponding to the nodes in the target domain, the rapid forwarding and execution of the vehicle control instruction are realized, and the execution response speed of the nodes in the target domain is improved.

Example IV

Fig. 6 is a flowchart of a vehicle control method according to a fourth embodiment of the present invention, where on the basis of the foregoing embodiment, the vehicle control instruction includes a sleep instruction, and an implementation manner of the vehicle control method is provided, so that sleep control of nodes in a target domain can be implemented. As shown in fig. 6, the method includes:

s410, the control service controller sends out a dormancy instruction, and the dormancy instruction is sent to at least one of an engine compartment domain controller, a vehicle body domain controller and a chassis domain controller through a first bus.

S420, the node in the control target domain receives the dormancy instruction sent through the second bus.

And S430, when the node in the target domain meets the dormancy instruction, controlling the controller local area network transceiver of the node in the target domain to enter a dormancy state, and further controlling the power supply of the node in the target domain to turn off the power supply output so as to enable the node in the target domain to enter the dormancy state.

In the embodiment of the invention, the service controller CAN be controlled to send the dormancy instruction for controlling the node in the target domain to enter the dormancy state, after at least one of the engine compartment domain controller, the vehicle body domain controller and the chassis domain controller monitors the vehicle control instruction through the first bus, the dormancy instruction CAN be forwarded to the corresponding node in the target domain through the second bus, and when the node in the target domain meets the dormancy instruction, for example, when the node in the target domain has no communication requirement or no service process, a Controller Area Network (CAN) transceiver of the node in the target domain CAN be controlled to enter the dormancy (Sleep) state, and then the power supply of the node in the target domain is controlled to be closed, so that the node in the target domain enters the dormancy state. In a specific embodiment, when the MCU of the node in the target domain meets the Sleep instruction, the CAN transceiver of the node in the domain is controlled to enter a Sleep state by sending an SPI corresponding instruction; after the CAN transceiver enters a Sleep state, an INH pin of the CAN transceiver is pulled down, a power supply of 5V or 3V is controlled to be turned off, and the power supply output is indirectly caused to process a power-down state of the whole MCU system, so that nodes in a target domain successfully enter a dormant state.

According to the technical scheme, the control business controller sends the dormancy instruction, the dormancy instruction is sent to at least one of the engine compartment domain controller, the vehicle body domain controller and the chassis domain controller through the first bus, the node in the target domain is controlled to receive the dormancy instruction sent through the second bus, when the node in the target domain meets the dormancy instruction, the controller local area network transceiver of the node in the target domain is controlled to enter a dormant state, and then the power supply of the node in the target domain is controlled to be turned off to output, so that the node in the target domain enters the dormant state. According to the embodiment of the invention, the node in the target domain is controlled to receive the dormancy instruction through the vehicle communication network system, so that the node in the target domain is controlled to enter the dormancy state, the electricity consumption of the node in the domain and the vehicle battery can be reduced, and the endurance mileage is further improved.

Example five

Fig. 7 is a flowchart of a vehicle control method according to a fifth embodiment of the present invention, where on the basis of the foregoing embodiment, the embodiment provides an implementation manner of the vehicle control method according to the present invention, in which the vehicle control instruction includes a wake-up instruction, so as to implement wake-up control of nodes in a target domain. As shown in fig. 7, the method includes:

s510, the control service controller sends out a wake-up instruction, and the dormancy instruction is sent to at least one of an engine compartment domain controller, a vehicle body domain controller and a chassis domain controller through a first bus.

S520, the node in the control target domain receives a wake-up instruction sent by the second bus, wherein the wake-up instruction comprises a network management message.

In the embodiment of the present invention, the network management message may refer to a message for implementing network management of a node in a target domain, where the network management message may include: CAN message identification, CAN FD message identification, address or identification of a node in a target domain, effective wake-up flag bit and other information.

S530, a controller local area network transceiver controlling the nodes in the target domain analyzes the network management message to obtain target identification information.

The target identification information may refer to identification information obtained by parsing a network management message, and the target identification information may include: CAN message identification, CAN FD message identification, etc.

In the embodiment of the invention, after the node in the target domain monitors the wake-up instruction through the second bus, the CAN transceiver of the node in the target domain CAN be controlled to analyze the network management message in the wake-up instruction, so as to obtain the corresponding target identification information, namely, the target identification information CAN include, but is not limited to, CAN message identification, CAN FD message identification and the like.

S540, the transceiver reads the preset wake-up configuration information in the controller area network.

The preset wake-up configuration information may be preset configuration information for managing wake-up control of the node in the target domain, where the preset wake-up configuration information may include one or more CAN packet identifiers, CAN FD packet identifiers, and the like, and the preset wake-up configuration information may be preset and stored in at least one register of the CAN transceiver.

In the embodiment of the invention, after the node in the target domain receives the wake-up instruction, the preset wake-up configuration information CAN be read from the register of the CAN transceiver so as to carry out subsequent wake-up detection.

S550, when the target identification information is matched with the preset wake-up configuration information, determining that the network management message is an effective wake-up source.

Wherein the effective wake-up source may include: whether the network management message is a designated CAN message, whether the network management message is a designated CAN FD message, and the like.

In the embodiment of the invention, the target identification information obtained by analysis CAN be subjected to field matching with the preset wake-up configuration information read from the register, whether the network management message is a designated CAN message or not is judged, or whether the network management message is a designated CAN FD message or not is judged, and if the matching is successful, the network management message is determined to be an effective wake-up source.

S560, the controller local area network transceiver is controlled to switch from the dormant state to the standby state, and then the power supply of the node in the target domain is controlled to normally output, so that the node in the target domain enters the normal state.

In the embodiment of the invention, when the node in the target domain determines that the received network management message is an effective wake-up source, the CAN transceiver of the node in the target domain CAN be controlled to be switched from a Sleep state to a Standby state, so that the normal power output of the power supply of the node in the target domain is controlled, and the node in the target domain is enabled to enter the normal state. In a specific embodiment, when the CAN transceiver of the node in the target domain is in a Sleep state, the CAN transceiver belongs to an extremely low power consumption state, but also synchronously detects whether an effective wake-up source exists in the network; when the CAN transceiver recognizes an effective wake-up source, the CAN transceiver is automatically switched from a Sleep state to a Standby state, an INH pin of the CAN transceiver is pulled up in the Standby state, and the normal power output of a 5V or 3V power supply is controlled, so that the MCU whole system is normally powered, and nodes in a target domain enter a normal working state from a dormant state.

According to the technical scheme, the control business controller sends the wake-up instruction, the sleep instruction is sent to at least one of the engine compartment domain controller, the vehicle body domain controller and the chassis domain controller through the first bus, the node in the control target domain receives the wake-up instruction sent through the second bus, the wake-up instruction comprises the network management message, the local area network transceiver of the node in the control target domain analyzes the network management message to obtain the target identification information, the local area network transceiver reads the preset wake-up configuration information, when the target identification information is matched with the preset wake-up configuration information, the network management message is determined to be an effective wake-up source, the local area network transceiver is controlled to be switched to a standby state from a sleep state, and then the power supply of the node in the target domain is controlled to be normally output, so that the node in the target domain enters a normal state. According to the embodiment of the invention, the wake-up instruction of the node in the target domain is controlled through the vehicle communication network system, so that the node in the target domain is controlled to be switched from dormancy to a normal state, the wake-up speed of the node in the target domain can be increased, and the node in the target domain can be quickly brought into a working state.

Example six

Fig. 8 is a flowchart of a vehicle control method according to a sixth embodiment of the present invention, where on the basis of the foregoing embodiment, an implementation manner of the vehicle control method is provided, so that sleep and wake-up control of a node in a target domain can be implemented. As shown in fig. 8, the method includes:

s610, controlling MCU of the node in the target domain to power up.

S620, determining whether the ECU state manager identifies a valid wake source.

S630, controlling the communication manager module to start communication, controlling the basic software management module to start control of other basic software modules, and controlling the ECU state manager to enter RUN mode.

In the embodiment of the invention, after determining that the ECU state manager (EcuM) identifies a valid wake source, the communication manager (ComM) module may be notified to turn on communication, and the base software management (BswM) module may be notified to turn on control of other Base Software (BSW) modules, and to control the EcuM to enter RUN mode.

S640, controlling the CAN transceiver to enter a Normal state.

In the embodiment of the invention, after the ComM module starts communication, the CAN transceiver CAN be controlled to enter a Normal state through SPI communication.

S650, the node in the target domain works normally.

S660, determining whether the node in the target domain meets the dormancy condition.

S670, controlling the CAN transceiver to enter a Sleep state.

In the embodiment of the invention, after the MCU of the node in the target domain is electrified, when an effective wake-up source is not detected, a power-down flow is directly carried out, the CAN transceiver is controlled to enter a Sleep state, and then the node in the target domain is finally controlled to enter a dormant state; in addition, when the node in the target domain meets the Sleep condition, for example, when there is no network management message in the network, the CAN transceiver is controlled to enter a Sleep state.

S680, the CAN transceiver is controlled to maintain a Sleep state.

S690, determining whether the CAN transceiver identifies a valid wake-up source.

S6100, controlling the CAN transceiver to automatically switch to the Standby state.

In the embodiment of the invention, when the CAN transceiver is in the Sleep state, the wake-up source arranged before dormancy CAN be synchronously detected, and if the CAN transceiver identifies that the effective wake-up source is in the Sleep state, the CAN transceiver CAN be controlled to be automatically switched to the Standby state, so that the MCU of the node in the target domain is controlled to be electrified, and the node in the target domain enters the normal working state from the Sleep state.

Furthermore, on the basis of the embodiment of the invention, for each intra-domain node of the vehicle communication network system in the embodiment of the invention, two wake-up modes of specific frame wake-up and random frame wake-up are supported, and a domestic MCU 3.3V power supply system is supported. As shown in fig. 9, the CAN circuit for the intra-domain node CAN support 3 kinds of wake-up scenarios, namely cold start wake-up, which is characterized in that: the MCU is in a power-down state, part of peripheral circuits of the ECU such as the CAN transmitter is in a power-up state, a wake-up event CAN be identified by the CAN transceiver, and the CAN transceiver CAN determine whether to wake up the MCU according to a wake-up source; secondly, CAN channel type dormancy awakening is characterized in that: the MCU is always in a normal power supply state, at least part of peripheral circuits of the ECU are in a power supply state, the CAN transceiver is in a Standby state, a wake-up event CAN be identified by the CAN transceiver, and a soft interrupt wake-up MCU CAN be generated after the CAN transceiver identifies an effective wake-up source or the MCU periodically checks whether the effective wake-up source exists; thirdly, CAN channel and MCU formula dormancy awaken up, its characteristics are: the MCU is in a low power consumption state, at least part of peripheral circuits of the ECU are in a power supply state, the CAN transceiver is in a Standby state, a wake-up event CAN be identified by the CAN transceiver, and a soft interrupt wake-up MCU CAN be generated after the CAN transceiver identifies an effective wake-up source.

According to the technical scheme, whether the ECU state manager identifies an effective wake-up source or not is determined by controlling MCU power-up of the nodes in the target domain, the communication manager module is controlled to start communication, the base software management module starts control of other base software modules, the ECU state manager is controlled to enter RUN mode, the CAN transceiver is controlled to enter Normal state, the nodes in the target domain normally work, whether the nodes in the target domain meet Sleep conditions or not is determined, the CAN transceiver is controlled to enter Sleep state, the CAN transceiver is controlled to keep Sleep state, whether the CAN transceiver identifies the effective wake-up source is determined, and the CAN transceiver is controlled to automatically switch to Standby state.

According to the embodiment of the invention, the node in the target domain is controlled to sleep and wake up through the vehicle communication network system, so that the electricity consumption of the node in the domain and the vehicle battery can be reduced, the time for waking up the node in the target domain to normal work can be shortened, and the node in the target domain can quickly respond to the requirement.

Example seven

The embodiment of the present invention also provides a storage medium containing computer-executable instructions, which when executed by a computer processor, are for performing a vehicle control method comprising:

the control business controller sends out a vehicle control instruction which is sent to at least one of an engine compartment domain controller, a vehicle body domain controller and a chassis domain controller through a first bus;

and controlling nodes in a target domain corresponding to the engine compartment domain controller, the vehicle body domain controller and the chassis domain controller to execute the vehicle control instruction.

Of course, the storage medium containing the computer executable instructions provided in the embodiments of the present invention is not limited to the method operations described above, and may also perform the related operations in the vehicle control method provided in any embodiment of the present invention.

From the above description of embodiments, it will be clear to a person skilled in the art that the present invention may be implemented by means of software and necessary general purpose hardware, but of course also by means of hardware, although in many cases the former is a preferred embodiment. Based on such understanding, the technical solution of the present invention may be embodied essentially or in a part contributing to the prior art in the form of a software product, which may be stored in a computer readable storage medium, such as a floppy disk, a Read-Only Memory (ROM), a random access Memory (Random Access Memory, RAM), a FLASH Memory (FLASH), a hard disk or an optical disk of a computer, etc., and include several instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to execute the vehicle control method according to the embodiments of the present invention.

It should be appreciated that various forms of the flows shown above may be used to reorder, add, or delete steps. For example, the steps described in the present invention may be performed in parallel, sequentially, or in a different order, so long as the desired results of the technical solution of the present invention are achieved, and the present invention is not limited herein.

The above embodiments do not limit the scope of the present invention. It will be apparent to those skilled in the art that various modifications, combinations, sub-combinations and alternatives are possible, depending on design requirements and other factors. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the scope of the present invention.

Claims (10)

1. A vehicle communication network system, the system comprising:

at least one service controller, an engine compartment domain controller, a vehicle body domain controller, a chassis domain controller, and intra-domain nodes corresponding to the engine compartment domain controller, the vehicle body domain controller, and the chassis domain controller, respectively;

the engine compartment domain controller, the vehicle body domain controller and the chassis domain controller are connected to the at least one service controller through a first bus to form a first backbone network;

the engine compartment domain controller, the vehicle body domain controller and the chassis domain controller are respectively connected to the corresponding intra-domain nodes through a second bus to form a second backbone network.

2. The system of claim 1, wherein the traffic controller comprises at least one of: a power domain core controller, an advanced autopilot domain controller, and a cockpit domain controller.

3. The system of claim 1, wherein the intra-domain node to which the engine compartment domain controller corresponds comprises at least one of: the vehicle body domain controller comprises a front motor control unit, a combined inertial navigation system, a redundant braking control unit and a steering power-assisted system, wherein the intra-domain nodes corresponding to the vehicle body domain controller comprise at least one of the following: the system comprises a combination switch, a digital key, a radio frequency transceiver and a right front door controller, wherein the intra-domain node corresponding to the chassis domain controller comprises at least one of the following components: the system comprises a back tail lamp system, a back motor control unit, a power amplifier system and a charger system.

4. A system according to any one of claims 1-3, characterized in that the system comprises:

the engine domain controller, the vehicle body domain controller and the chassis domain controller are respectively in communication connection with the power domain core controller, the advanced autopilot domain controller and the cabin domain controller by two through a first controller local area network bus and/or a first variable rate controller local area network bus;

the engine compartment domain controller, the vehicle body domain controller and the chassis domain controller are respectively in communication connection with the corresponding intra-domain nodes through a second controller local area network bus and/or a second variable rate controller local area network bus;

the engine compartment domain controller is respectively connected with the power domain core controller and the advanced autopilot domain controller by 100base-T1 Ethernet communication;

the vehicle body domain controller is respectively connected with the advanced autopilot domain controller and the cockpit domain controller by a way of 100base-T1 Ethernet communication, and is connected with the cockpit domain controller by a way of 1000base-T1 Ethernet communication;

the chassis domain controller and the power domain core controller are also connected by a 100base-T1 Ethernet.

5. A vehicle control method, characterized by being applied to a vehicle communication network system, the method comprising:

the control business controller sends out a vehicle control instruction which is sent to at least one of an engine compartment domain controller, a vehicle body domain controller and a chassis domain controller through a first bus;

and controlling nodes in a target domain corresponding to the engine compartment domain controller, the vehicle body domain controller and the chassis domain controller to execute the vehicle control instruction.

6. The method of claim 5, wherein the vehicle control instructions comprise sleep instructions, the controlling the in-target domain nodes corresponding to the engine compartment domain controller, the body domain controller, the chassis domain controller to execute the vehicle control instructions comprises:

controlling the node in the target domain to receive the dormancy instruction sent by the second bus;

and when the node in the target domain meets the dormancy instruction, controlling a controller local area network transceiver of the node in the target domain to enter a dormancy state, and further controlling a power supply of the node in the target domain to turn off a power supply output so as to enable the node in the target domain to enter the dormancy state.

7. The method of claim 5, wherein the vehicle control instructions comprise wake-up instructions, the controlling the target domain nodes corresponding to the engine compartment domain controller, the body domain controller, the chassis domain controller to execute the vehicle control instructions comprising:

controlling the node in the target domain to receive the wake-up instruction sent by the second bus, wherein the wake-up instruction comprises a network management message;

a controller local area network transceiver controlling the node in the target domain analyzes the network management message to obtain target identification information;

reading preset wake-up configuration information from the controller area network transceiver;

when the target identification information is matched with the preset wake-up configuration information, determining that the network management message is an effective wake-up source;

and controlling the controller local area network transceiver to be switched from the dormant state to the standby state, and further controlling the normal output of the power supply of the node in the target domain so as to enable the node in the target domain to enter the normal state.

8. The method of claim 7, wherein the controller area network transceiver comprises at least one register for storing the preset wake-up configuration information.

9. The method of claim 5, wherein the engine compartment domain controller, the body domain controller, and the chassis domain controller are all 3.3V single-chip microcomputer control systems, and the 3.3V single-chip microcomputer control systems are designed with a 25MHz single-chip microcomputer minimum system.

10. A computer readable storage medium storing computer instructions for causing a processor to implement the vehicle control method of any one of claims 5-9 when executed.