CN114675566A - Controller state control method and device, controller and electric automobile - Google Patents

Controller state control method and device, controller and electric automobile Download PDF

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Publication number
CN114675566A
CN114675566A CN202110127710.0A CN202110127710A CN114675566A CN 114675566 A CN114675566 A CN 114675566A CN 202110127710 A CN202110127710 A CN 202110127710A CN 114675566 A CN114675566 A CN 114675566A
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China
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controller
message
state
controlling
condition
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CN202110127710.0A
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Chinese (zh)
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李艳芳
梁海强
张蓝文
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Beijing Electric Vehicle Co Ltd
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Beijing Electric Vehicle Co Ltd
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Priority to CN202110127710.0A priority Critical patent/CN114675566A/en
Publication of CN114675566A publication Critical patent/CN114675566A/en
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    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B19/00—Programme-control systems
    • G05B19/02—Programme-control systems electric
    • G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
    • G05B19/042—Programme control other than numerical control, i.e. in sequence controllers or logic controllers using digital processors
    • G05B19/0423—Input/output
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B2219/00—Program-control systems
    • G05B2219/20—Pc systems
    • G05B2219/25—Pc structure of the system
    • G05B2219/25257—Microcontroller

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Automation & Control Theory (AREA)
  • Small-Scale Networks (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

The application discloses a controller state control method, a controller state control device, a controller and an electric automobile, and relates to the technical field of automobile control, wherein the method comprises the following steps: receiving a first message, wherein the first message is a message on a controller area network (CAN FD) bus supporting a variable bit rate; controlling the controller to be in a dormant state under the condition that the first message is judged not to be a network management message; and controlling the controller to be in a working state under the condition that the first message is judged to be the network management message. According to the scheme, the controller can keep the dormant state without sending messages or unexpected output to the network under the condition that the controller receives messages which are not network management messages, interference on the whole vehicle network is avoided, and energy consumption of the whole vehicle is reduced.

Description

Controller state control method and device, controller and electric automobile
Technical Field
The application relates to the technical field of automobile control, in particular to a controller state control method and device, a controller and an electric automobile.
Background
Along with the development of the intellectualization of the whole vehicle, the requirement on the communication speed of the whole vehicle is higher and higher. At present, the mainstream communication is Controller Area Network (CAN) communication, and Controller Area Network (CANFD) and ethernet communication supporting variable bit rate become the first choice of manufacturers for improving security and intellectualization, however, at present, there is no Automotive Open System architecture (Autosar) Network management based on CANFD yet there is no unified scheme and chip support.
Network management based on Autosar needs to wake up a controller according to a specific network management message, and due to the particularity of a CAN fd message, a current CAN chip cannot support and confirm the specific network management message, so that the controller is also woken up to normally receive and transmit the message when receiving an unexpected network message, thereby causing interference to the network of the whole vehicle and increasing the energy consumption of the whole vehicle.
Disclosure of Invention
The application aims to provide a controller state control method, a controller state control device, a controller and an electric automobile, so that the problem that in the prior art, when a controller receives an unexpected network message, the controller sends the message to a network or generates unexpected output is solved.
In order to achieve the above object, the present application provides a controller state control method, applied to a controller, including:
receiving a first message, wherein the first message is a message on a controller area network (CAN FD) bus supporting a variable bit rate;
controlling the controller to be in a dormant state under the condition that the first message is judged not to be a network management message;
and controlling the controller to be in a working state under the condition that the first message is judged to be the network management message.
Optionally, controlling the controller to be in a dormant state when it is determined that the first packet is not a network management packet, includes:
and controlling the message receiving and sending function of the CAN transceiver in the controller to be in a closed state.
Optionally, controlling the controller to be in a dormant state when it is determined that the first packet is not a network management packet, includes:
setting the network awakening abnormal zone bit to a first preset value;
and controlling an output interface of the controller to be in a preset default state.
Optionally, controlling the controller to be in a dormant state when it is determined that the first packet is not a network management packet, includes:
and forbidding the bottom layer of the controller to send the analysis result of the first message to the application layer of the controller.
Optionally, the method further comprises:
under the condition that the first message is not a network management message, if a first awakening request is received, executing a power-on process; the first awakening request is an awakening request except for message awakening.
Optionally, the receiving the first packet includes:
and receiving the first message under the condition that the controller is in a dormant state or under the condition that the bottom layer of the controller completes network release.
The embodiment of the application provides a controller state control device, is applied to the controller, includes:
a receiving module, configured to receive a first message, where the first message is a message on a controller area network CANFD bus that supports a variable bit rate;
the first control module is used for controlling the controller to be in a dormant state under the condition that the first message is judged to be not the network management message;
and the second control module is used for controlling the controller to be in a working state under the condition that the first message is judged to be the network management message.
Optionally, the first control module comprises:
and the first control submodule is used for controlling the message transceiving function of the CAN transceiver in the controller to be in a closed state.
Optionally, the first control module comprises:
the second control submodule is used for setting the network awakening abnormal zone bit to be a first preset value;
and the third control sub-module is used for controlling the output interface of the controller to be in a preset default state.
Optionally, the first control module comprises:
and the fourth control submodule is used for forbidding the bottom layer of the controller to send the analysis result of the first message to the application layer of the controller.
Optionally, the apparatus further comprises:
the third control module is used for executing a power-on process if a first awakening request is received under the condition that the first message is not a network management message; the first awakening request is an awakening request except for message awakening.
Optionally, the receiving module is configured to:
and receiving the first message under the condition that the controller is in a dormant state or under the condition that the bottom layer of the controller completes network release.
An embodiment of the present application further provides a controller, including: a processor, a memory and a program stored on the memory and executable on the processor, the program, when executed by the processor, implementing the steps of the controller state control method as described above.
The embodiment of the application also provides an electric automobile which comprises the controller.
An embodiment of the present application further provides a readable storage medium, which stores a program, and when the program is executed by a processor, the method for controlling the state of the controller as described above is implemented.
The above technical scheme of this application has following beneficial effect at least:
The state control method of the controller according to the embodiment of the application includes the steps of firstly, receiving a first message, wherein the first message is a message on a controller area network (CAN FD) bus supporting a variable bit rate; controlling the controller to be in a dormant state under the condition that the first message is not judged to be the network management message; and controlling the controller to be in a working state under the condition that the first message is judged to be the network management message. Therefore, after the CAN transceiver in the controller receives the first message on the CAN FD bus, the first message is judged to determine whether the first message is a network management message or not, and the controller is determined to be in a dormant state or a working state according to the judgment result, so that the situation that the CAN transceiver of the controller directly wakes up a main control unit of the controller after receiving the message on the CAN FD bus is avoided, the controller further wakes up other controllers on the CAN bus by sending the message on the CAN bus, interference is generated on the whole vehicle network, and the energy consumption of the whole vehicle is increased.
Drawings
FIG. 1 is a flowchart illustrating a method for controlling a controller status according to an embodiment of the present disclosure;
FIG. 2 is a second flowchart illustrating a controller state control method according to an embodiment of the present application;
Fig. 3 is a schematic structural diagram of a controller state control device according to an embodiment of the present application.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some, but not all, embodiments of the present application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
The terms first, second and the like in the description and in the claims of the present application are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the application are capable of operation in sequences other than those illustrated or described herein. In addition, "and/or" in the specification and claims means at least one of connected objects, a character "/" generally means that a preceding and succeeding related objects are in an "or" relationship.
The controller state control method provided in the embodiments of the present application is described in detail below with reference to the accompanying drawings through specific embodiments and application scenarios thereof.
As shown in fig. 1, which is a schematic flow chart of a controller state control method according to an embodiment of the present application, the method includes:
step 101: receiving a first message, wherein the first message is a message on a controller area network (CAN FD) bus supporting a variable bit rate;
it should be noted here that the CAN fd bus is an upgraded version of the conventional CAN bus, and compared with the conventional CAN bus, the CAN fd bus has the advantages of supporting variable speed and supporting longer data, and is more suitable for automobiles with more and more functions.
Step 102: controlling the controller to be in a dormant state under the condition that the first message is not judged to be the network management message;
step 103: and controlling the controller to be in a working state under the condition that the first message is judged to be the network management message.
That is to say, after the CAN transceiver of the controller receives the first message on the CAN fd bus, the controller (specifically, the bottom layer of the controller) first determines whether the first message is a network management message, so as to determine whether the controller should be in a sleep state or a working state according to the determination result.
According to the state control method of the controller, after the CAN transceiver of the controller receives a first message on the CANFD bus, the operating system of the controller calls a bottom layer periodic task to judge the first message so as to determine whether the first message is a network management message, and therefore the controller is determined to be in a dormant state or a working state according to a judgment result, and therefore the situation that the CAN transceiver of the controller directly wakes up a main control unit of the controller after receiving the message on the CANFD bus is avoided, the controller sends the message on the bus so as to further wake up other controllers on the bus, and interference is generated on the whole vehicle network; in addition, the energy consumption of the whole vehicle is reduced.
As an optional implementation manner, in step 102, in the case that it is determined that the first packet is not a network management packet, controlling the controller to be in a dormant state includes:
and controlling the message receiving and sending functions of the CAN transceiver in the controller to be in a closed state.
In this optional implementation, when it is determined that the first message is not a network management message, it is determined that the controller does not need to wake up at present, that is, the controller should be in a sleep state at present, and when the controller is in the sleep state, the controller does not send a message to the CAN network to initiate information interaction with other controllers.
As another optional implementation manner, in step 102, in the case that it is determined that the first packet is not a network management packet, controlling the controller to be in a sleep state includes:
the method comprises the following steps: setting the network awakening abnormal zone bit to a first preset value;
Here, it should be noted that after the CAN transceiver in the controller receives the first message, the bottom layer of the controller may determine the first message to determine whether the first message is a network management message; and under the condition that the first message is determined not to be the network management message, the bottom layer of the controller sets the network awakening abnormal flag bit to be the first preset value.
As the name implies, the wake-on-LAN exception flag is a parameter for indicating whether wake-on-LAN is abnormal or not. Under the condition that the first message is determined not to be the network management message, determining that the message awakening at this time belongs to abnormal awakening, namely: although the CAN transceiver receives a message on the CAN fd bus at present, the controller is not required to be woken up at present, so the bottom layer CAN set the flag bit of the wake-on-lan exception to a first preset value, so that the application layer of the controller CAN determine that the wake-up in the current state is a wake-up in an abnormal state according to the flag bit of the wake-on-lan exception, and the controller should be in a sleep state at present, optionally, the first preset value is 1.
Step two: and controlling the output interface of the controller to be in a preset default state.
In this step, the application layer of the controller determines that the controller is currently awake in an abnormal state according to the wake-up abnormal flag bit, that is, when it is determined that the controller should be in a sleep state at present, the application layer of the controller correspondingly outputs preset signals to each output interface (hard wire) according to a pre-configuration rule, so that each hard wire is always in a preset default state, thereby preventing the controller from outputting unexpected signals to the CAN network, and allowing other controllers to consider that the controller is currently in the sleep state.
In this optional implementation manner, under the condition that it is determined that the first message is not a network management message, the bottom layer of the controller sets the network wakeup abnormal flag bit to the first preset value, so that the application layer of the controller CAN confirm that the current state is an abnormal wakeup state according to the network wakeup abnormal flag bit, and thus outputs a preset signal to each output interface/hard wire of the controller, so that each output interface/hard wire is in a preset default state, and an unexpected output of the controller is avoided, so that the CAN network is not woken up due to the output of the controller, interference on the entire vehicle network is reduced, and energy consumption of the entire vehicle is reduced.
As an optional implementation manner, in step 102, in the case that it is determined that the first packet is not a network management packet, controlling the controller to be in a dormant state includes:
and prohibiting the bottom layer of the controller from sending the analysis result of the first message to the application layer of the controller.
Here, it should be noted that after the CAN transceiver of the controller receives the first message, the bottom layer of the controller analyzes the first message and determines whether the first message is a network management message; if the first message is judged to be not the network management message, determining that the first message is abnormal awakening at present, namely: at present, the controller does not need to be awakened, so that the bottom layer of the controller cannot send the analysis result of the first message to the application layer, and the situation that the application layer sends message information to the CAN network based on the analysis result, so that interference on the whole vehicle network is caused, and the energy consumption of the whole vehicle is increased is avoided.
Further, as an optional implementation manner, the method further includes: if a first awakening request is received under the condition that the first message is not a network management message, executing an electrifying process; the first wake-up request is a wake-up request other than the message wake-up request.
That is to say, the first packet is determined not to be a network management packet at the bottom layer of the controller, and when the controller is woken up abnormally through the packet at present, the bottom layer of the controller also monitors and judges whether a wake-up request of other local wake-up sources is received, and if the wake-up request of other wake-up sources is received, the controller is woken up based on the wake-up requests of other wake-up sources, so that the controller enters a normal power-on process, enters a working state, and meets the current requirement of a user.
As an optional implementation manner, step 101, receiving a first message, includes:
and receiving the first message under the condition that the controller is in a dormant state or under the condition that the bottom layer of the controller completes network release.
That is to say, the controller state control method according to the embodiment of the present application may be applied to a first application scenario in which the controller is currently in a dormant state, and may also be applied to a second application scenario in which the controller is currently in a state switched from a working state to the dormant state. By adopting the controller state control method in the embodiment of the application in the first application scene, on one hand, the problem that the energy consumption of the whole vehicle is increased due to the fact that the awakening pin of the CAN transceiver is pulled up after the controller receives the message is avoided; on the other hand, the controller is prevented from being awakened after receiving the message, and interference to the whole vehicle network is avoided. In the second application scenario, by using the state control method of the controller in the embodiment of the application, it is avoided that in the process of switching the controller from the working state to the sleep state, the wake-up pin of the CAN transceiver of the controller is always pulled up and cannot enter the sleep state due to the existence of the message in the CAN network, which causes the increase of the energy consumption of the whole vehicle.
Next, specific implementations of the state control method of the controller in the embodiment of the present application in the above two application scenarios are described with reference to fig. 2:
step 201: the controller enters a dormant state;
step 202: the controller receives any network message;
step 203: the wake-up pin of the CAN transceiver is pulled high, and the power supply chip supplies power to the main control chip;
step 204: the hardware of the controller completes initialization setting;
step 205: starting an operating system to finish initialization of a bottom layer and an application layer;
step 206: the bottom layer periodic task judges any message;
step 207: whether the message is a network management message; that is, determining whether any message of the currently received network is a network management message; if yes, go to step 212, if no, go to step 208 and return to step 206;
step 208: the bottom layer sets the flag bit of the network wakeup exception to 1;
step 209: the message receiving and sending functions of all CAN transceivers are in a closed state;
step 210: the bottom layer does not assign a value to the CAN input signal of the application layer, namely: the bottom layer does not send the analysis result of the message to the application layer;
step 211: calling an application layer function, wherein the application layer function controls the output of the hard line to be in a default state according to the network abnormal awakening flag bit;
Step 212: the bottom layer sets the flag bit of the network wakeup exception to 0;
step 213: controlling the message transceiving functions of all CAN transceivers to be in an open state, and calling a reference layer function; that is, the controller is normally powered up;
step 214: the application layer power-off request mark position 1; it should be noted that this step is executed after receiving a power-off request from the user;
step 215: the bottom layer completes network release;
step 216: judging whether an application message still exists on the network; if yes, go to step 206, otherwise go to step 201.
In the controller state control method of the embodiment of the application, when the controller is in a dormant state or when the controller is switched from a working state to the dormant state, if a first message is received, the first message is judged, when the first message is judged to be a network management message, the controller is controlled to be normally powered on, and when the first message is judged not to be the network management message, the controller is controlled to be still in the dormant state, specifically, a message receiving and sending function of the CAN transceiver is in a closed state, a message analysis result is not sent to an application layer at a bottom layer, and the output of each hard wire is in a default state, so that the situation that the controller sends the message outwards or has unexpected output to cause interference to the network under the situation is avoided, and the energy consumption of the whole vehicle is reduced.
As shown in fig. 3, an embodiment of the present application further provides a controller state control device, which is applied to a controller, and includes:
a receiving module 301, configured to receive a first message, where the first message is a message on a controller area network CANFD bus that supports a variable bit rate;
a first control module 302, configured to control the controller to be in a dormant state when it is determined that the first packet is not a network management packet;
and a second control module 303, configured to control the controller to be in an operating state when it is determined that the first packet is a network management packet.
In the state switching device of the controller according to the embodiment of the present application, first, the receiving module 301 receives a first message, where the first message is a message on a controller area network CANFD bus supporting a variable bit rate; the first control module 302 controls the controller to be in a dormant state when determining that the first message is not a network management message; the second control module 303 controls the controller to be in the working state when determining that the first packet is the network management packet. Therefore, after the CAN transceiver in the controller receives the first message on the CAN FD bus, the first message is judged to determine whether the first message is a network management message or not, and the controller is determined to be in a dormant state or a working state according to the judgment result, so that the situation that the CAN transceiver of the controller directly wakes up a main control unit of the controller after receiving the message on the CAN FD bus is avoided, the controller further wakes up other controllers on the CAN bus by sending the message on the CAN bus, interference is generated on the whole vehicle network, and the energy consumption of the whole vehicle is increased.
Optionally, the first control module comprises:
and the first control submodule is used for controlling the message transceiving function of the CAN transceiver in the controller to be in a closed state.
Optionally, the first control module 302 includes:
the second control submodule is used for setting the network awakening abnormal zone bit to a first preset value;
and the third control sub-module is used for controlling the output interface of the controller to be in a preset default state.
Optionally, the first control module 302 includes:
and the fourth control submodule is used for forbidding the bottom layer of the controller to send the analysis result of the first message to the application layer of the controller.
Optionally, the apparatus further comprises:
the third control module is used for executing the power-on process if the first awakening request is received under the condition that the first message is not the network management message; the first awakening request is an awakening request except for message awakening.
Optionally, the receiving module 301 is configured to:
and receiving the first message under the condition that the controller is in a dormant state or under the condition that the bottom layer of the controller completes network release.
An embodiment of the present application further provides a controller, including: the processor, the memory and the program stored in the memory and capable of running on the processor, when the program is executed by the processor, the processes of the embodiment of the controller state control method are implemented, and the same technical effect can be achieved.
The embodiment of the application also provides an electric automobile which comprises the controller.
An embodiment of the present application further provides a readable storage medium, where a program is stored, and when the program is executed by a processor, the program implements each process of the embodiment of the controller state control method described above, and can achieve the same technical effect, and in order to avoid repetition, details are not described here again. The readable storage medium may be a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk.
Finally, it should also be noted that, in this document, relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "include", "including" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article, or terminal apparatus that includes a series of elements includes not only those elements but also other elements not explicitly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The foregoing is a preferred embodiment of the present application, and it should be noted that, for those skilled in the art, several modifications and refinements can be made without departing from the principle described in the present application, and these modifications and refinements should be regarded as the protection scope of the present application.

Claims (15)

1. A controller state control method is applied to a controller and is characterized by comprising the following steps:
receiving a first message, wherein the first message is a message on a controller area network (CAN FD) bus supporting a variable bit rate;
controlling the controller to be in a dormant state under the condition that the first message is judged to be not the network management message;
and controlling the controller to be in a working state under the condition that the first message is judged to be the network management message.
2. The method of claim 1, wherein controlling the controller to be in the sleep state in the case that it is determined that the first packet is not a network management packet comprises:
and controlling the message receiving and sending function of the CAN transceiver in the controller to be in a closed state.
3. The method of claim 1, wherein controlling the controller to be in the sleep state in the case that it is determined that the first packet is not a network management packet comprises:
Setting the network awakening abnormal zone bit to a first preset value;
and controlling an output interface of the controller to be in a preset default state.
4. The method of claim 1, wherein controlling the controller to be in the sleep state in the case that it is determined that the first packet is not a network management packet comprises:
and prohibiting the bottom layer of the controller from sending the analysis result of the first message to the application layer of the controller.
5. The method of claim 1, further comprising:
under the condition that the first message is not a network management message, if a first awakening request is received, executing a power-on process; the first awakening request is an awakening request except for message awakening.
6. The method of any of claims 1 to 5, wherein receiving the first message comprises:
and receiving the first message under the condition that the controller is in a dormant state or under the condition that the bottom layer of the controller completes network release.
7. A controller state control device is applied to a controller and is characterized by comprising:
a receiving module, configured to receive a first message, where the first message is a message on a controller area network CANFD bus that supports a variable bit rate;
The first control module is used for controlling the controller to be in a dormant state under the condition that the first message is judged to be not the network management message;
and the second control module is used for controlling the controller to be in a working state under the condition that the first message is judged to be the network management message.
8. The apparatus of claim 7, wherein the first control module comprises:
and the first control submodule is used for controlling the message transceiving function of the CAN transceiver in the controller to be in a closed state.
9. The apparatus of claim 7, wherein the first control module comprises:
the second control submodule is used for setting the network awakening abnormal zone bit to a first preset value;
and the third control sub-module is used for controlling the output interface of the controller to be in a preset default state.
10. The apparatus of claim 7, wherein the first control module comprises:
and the fourth control submodule is used for forbidding the bottom layer of the controller to send the analysis result of the first message to the application layer of the controller.
11. The apparatus of claim 7, further comprising:
The third control module is used for executing a power-on process if a first awakening request is received under the condition that the first message is not a network management message; the first awakening request is an awakening request except for message awakening.
12. The apparatus according to any one of claims 7 to 11, wherein the receiving module is configured to:
and receiving the first message under the condition that the controller is in a dormant state or under the condition that the bottom layer of the controller completes network release.
13. A controller, comprising: processor, memory and a program stored on the memory and executable on the processor, the program, when executed by the processor, implementing the steps of the controller state control method according to any of claims 1 to 6.
14. An electric vehicle characterized by comprising the controller according to claim 13.
15. A readable storage medium, characterized in that the readable storage medium has stored thereon a program which, when executed by a processor, implements the steps of the controller state control method according to any one of claims 1 to 6.
CN202110127710.0A 2021-01-29 2021-01-29 Controller state control method and device, controller and electric automobile Pending CN114675566A (en)

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Application Number Priority Date Filing Date Title
CN202110127710.0A CN114675566A (en) 2021-01-29 2021-01-29 Controller state control method and device, controller and electric automobile

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Application Number Priority Date Filing Date Title
CN202110127710.0A CN114675566A (en) 2021-01-29 2021-01-29 Controller state control method and device, controller and electric automobile

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Publication Number Publication Date
CN114675566A true CN114675566A (en) 2022-06-28

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