CN113452750B - Vehicle-mounted information entertainment system control method and system - Google Patents
Vehicle-mounted information entertainment system control method and system Download PDFInfo
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- CN113452750B CN113452750B CN202110528099.2A CN202110528099A CN113452750B CN 113452750 B CN113452750 B CN 113452750B CN 202110528099 A CN202110528099 A CN 202110528099A CN 113452750 B CN113452750 B CN 113452750B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/01—Protocols
- H04L67/12—Protocols specially adapted for proprietary or special-purpose networking environments, e.g. medical networks, sensor networks, networks in vehicles or remote metering networks
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R16/00—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for
- B60R16/02—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
- H04L12/40—Bus networks
- H04L12/40006—Architecture of a communication node
- H04L12/40013—Details regarding a bus controller
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
- H04L12/40—Bus networks
- H04L2012/40208—Bus networks characterized by the use of a particular bus standard
- H04L2012/40215—Controller Area Network CAN
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Abstract
The invention discloses a control method and a system of a vehicle-mounted infotainment system, wherein the vehicle-mounted infotainment system is communicated with a vehicle body control module of an automobile through a CAN network, the vehicle-mounted infotainment system comprises an SOC chip, an MCU, an RAM and a CAN transceiver, and the method comprises the following steps: when the whole vehicle is in dormancy, the vehicle body control module and the vehicle-mounted information entertainment system are in dormancy, the vehicle-mounted information entertainment system stores a state value of the vehicle body control module used by a user before dormancy in a false of an MCU, the MCU is electrically connected with the CAN transceiver, and the CAN transceiver is connected with a CAN network of the whole vehicle; and after the CAN network of the whole vehicle is awakened, the vehicle-mounted infotainment system does not send CAN network messages before the initialization is completed, and the vehicle-mounted infotainment system directly sends the stored state value of the vehicle body control module after the initialization is completed. The invention can solve the problem of function failure of the vehicle-mounted information entertainment system in the prior art.
Description
Technical Field
The invention relates to the technical field of automobiles, in particular to a control method and a control system for a vehicle-mounted information entertainment system.
Background
With the rapid development of the automobile industry and the continuous improvement of living conditions of people, automobiles become one of indispensable transportation tools for people to go out. The automobile keeping amount is increased year by year, and more people own private cars.
With the development of science and technology, the living standard of people is continuously improved, the requirements of people on the functions of automobiles are higher and higher, the automobiles are not simple transportation tools, modern automobiles are more and more intelligent, with the improvement of the popularity of intelligent automobile body control modules, in the actual use process, the In-Vehicle information entertainment system (IVI for short) CAN have the condition of function failure, and after the CAN network of the whole automobile is awakened, the system only sends an initial default value without sending a state value set by a user, so that the automobile body control modules do not execute corresponding actions, the advantages of the intelligent functions are not reflected, and the user experience is influenced.
Disclosure of Invention
In view of the above problems, an object of the present invention is to provide a method for controlling a vehicle-mounted infotainment system, so as to solve the problem of the prior art that the vehicle-mounted infotainment system has a function failure.
A control method of a vehicle-mounted infotainment system, wherein the vehicle-mounted infotainment system is communicated with a vehicle body control module of an automobile through a CAN network, the vehicle-mounted infotainment system comprises an SOC chip, an MCU, an RAM and a CAN transceiver, and the method comprises the following steps:
when the whole vehicle is in dormancy, the vehicle body control module and the vehicle-mounted information entertainment system are in dormancy, the vehicle-mounted information entertainment system stores a state value of the vehicle body control module used by a user before dormancy in a false of an MCU, the MCU is electrically connected with the CAN transceiver, and the CAN transceiver is connected with a CAN network of the whole vehicle;
and after the CAN network of the whole vehicle is awakened, the vehicle-mounted information entertainment system does not send CAN network messages before the initialization is completed, and the vehicle-mounted information entertainment system directly sends the stored state value of the vehicle body control module after the initialization is completed.
According to the vehicle-mounted infotainment system control method provided by the invention, the vehicle-mounted infotainment system stores the state value of the vehicle body control module used by the user before dormancy in the false of the MCU, after the whole vehicle CAN network is awakened, the vehicle-mounted infotainment system does not send CAN network messages before initialization is completed, and after the vehicle-mounted infotainment system is initialized, the stored state value of the vehicle body control module is directly sent, so that the problem that the vehicle-mounted infotainment system does not send the state value set by the user after the whole vehicle CAN network is awakened is solved, the condition that the vehicle-mounted infotainment system fails in function CAN be avoided, and the use experience of the user is improved.
In addition, the vehicle-mounted infotainment system control method according to the invention can also have the following additional technical characteristics:
further, the method further comprises:
the initial state of the vehicle body control module is a closed state, when a user uses the vehicle body control module, the vehicle body control module is set to be in an open state, and the state value at the moment is stored in false of the MCU.
Further, after the step of storing the state value at this time in false of the MCU, the method further includes:
judging whether the Falsh erasing of the SOC chip fails or not;
and if the false erasing of the SOC chip fails, backing up a state value to an RAM of the SOC chip.
Further, after the CAN network of the whole vehicle is awakened, the CAN network message is not sent before the vehicle-mounted infotainment system is initialized, and the step of directly sending the stored state value of the vehicle body control module after the vehicle-mounted infotainment system is initialized specifically comprises the following steps:
after the CAN network of the whole vehicle is awakened, judging whether the initialization of the vehicle-mounted information entertainment system is completed or not;
if the initialization of the vehicle-mounted information entertainment system is finished, a first frame of message is sent within preset time, the first frame of message is a stored state value of the vehicle body control module, and then the vehicle body control module executes corresponding action;
and if the initialization of the vehicle-mounted infotainment system is not completed, the first frame message is sent again after the initialization of the vehicle-mounted infotainment system is completed.
Further, the preset time is 200ms.
Another objective of the present invention is to provide a control system for a vehicle-mounted infotainment system, so as to solve the problem of the prior art that the vehicle-mounted infotainment system has a function failure.
An in-vehicle infotainment system control system comprising:
the vehicle-mounted information entertainment system is communicated with a vehicle body control module of the automobile through a CAN network, and comprises an SOC chip, an MCU, an RAM and a CAN transceiver:
when the whole vehicle is in dormancy, the vehicle body control module and the vehicle-mounted infotainment system are in dormancy, the vehicle-mounted infotainment system is used for storing a state value of the vehicle body control module used by a user before dormancy in false of an MCU, the MCU is electrically connected with the CAN transceiver, and the CAN transceiver is connected with a CAN network of the whole vehicle;
and after the CAN network of the whole vehicle is awakened, the vehicle-mounted infotainment system does not send CAN network messages before the initialization is completed, and the vehicle-mounted infotainment system directly sends the stored state value of the vehicle body control module after the initialization is completed.
According to the vehicle-mounted infotainment system control system provided by the invention, the vehicle-mounted infotainment system CAN store the state value of the vehicle body control module used by a user before dormancy in the false of the MCU, after the whole vehicle CAN network is awakened, the vehicle-mounted infotainment system does not send a CAN network message before initialization is completed, and after the vehicle-mounted infotainment system is initialized, the stored state value of the vehicle body control module is directly sent, so that the problem that the vehicle-mounted infotainment system does not send the state value set by the user after the whole vehicle CAN network is awakened is solved, the condition that the vehicle-mounted infotainment system fails in function CAN be avoided, and the use experience of the user is improved.
In addition, the vehicle-mounted infotainment system control system according to the present invention may have the following additional features:
further, the initial state of the vehicle body control module is a closed state, when a user uses the vehicle body control module, the vehicle body control module is set to be in an open state, and the state value at the moment is stored in the false of the MCU.
Further, if false erasing of the SOC chip fails, the vehicle-mounted infotainment system backs up a state value to a RAM of the SOC chip.
Further, after the CAN network of the whole vehicle is awakened, if the initialization of the vehicle-mounted infotainment system is completed, the vehicle-mounted infotainment system sends a first frame message within a preset time, wherein the first frame message is a stored state value of the vehicle body control module, and then the vehicle body control module executes corresponding action;
and if the initialization of the vehicle-mounted infotainment system is not completed, the first frame message is sent after the initialization of the vehicle-mounted infotainment system is completed.
Further, the preset time is 200ms.
Drawings
The above and/or additional aspects and advantages of embodiments of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
FIG. 1 is a flow chart of a method of controlling an in-vehicle infotainment system according to an embodiment of the invention;
FIG. 2 is a schematic diagram of the architecture of an in-vehicle infotainment system;
fig. 3 is a detailed flowchart of step S102 in fig. 1.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. 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 invention.
Referring to fig. 1 and 2, in a control method of a vehicle infotainment system according to an embodiment of the present invention, the vehicle infotainment system communicates with a body control module of an automobile through a CAN network, the vehicle infotainment system includes an SOC chip, an MCU, a RAM, and a CAN transceiver, and the method includes steps S101 to S102.
S101, after the whole vehicle is in dormancy, the vehicle body control module and the vehicle-mounted infotainment system are in dormancy, the vehicle-mounted infotainment system stores a state value of the vehicle body control module used by a user before dormancy in a false of an MCU (microprogrammed control unit), the MCU is electrically connected with the CAN transceiver, and the CAN transceiver is connected with a CAN network of the whole vehicle;
the SOC is a core chip of the vehicle-mounted information entertainment system, and key chips of the system are integrated. Typically the start-up time is about 9S.
The initial state of the vehicle body control module is a closed state, when a user uses the vehicle body control module, the vehicle body control module is set to be in an open state, and the state value at the moment is stored in false of the MCU.
Specifically, after the step of storing the state value at this time in false of the MCU, the method further includes:
judging whether the Falsh erasing of the SOC chip fails or not;
and if the false erasing of the SOC chip fails, backing up the state value into the RAM of the SOC chip. Due to the limitation of Flash erasing times, different products have slight differences in selection types, and if Flash erasing failure is identified, the state value used by a user is backed up in the RAM, so that the user configuration value can be guaranteed to be memorized in the MCU.
And S102, after the CAN network of the whole vehicle is awakened, the vehicle-mounted information entertainment system does not send CAN network messages before the initialization is completed, and the vehicle-mounted information entertainment system directly sends the stored state value of the vehicle body control module after the initialization is completed.
Referring to fig. 3, when the whole vehicle CAN network is woken up, the vehicle-mounted infotainment system does not send the CAN network message before the vehicle-mounted infotainment system is initialized, and the step of directly sending the stored state value of the vehicle body control module after the vehicle-mounted infotainment system is initialized specifically includes:
s1021, after the CAN network of the whole vehicle is awakened, whether the initialization of the vehicle-mounted information entertainment system is finished is judged;
s1022, if the initialization of the vehicle-mounted infotainment system is completed, sending a first frame message within preset time, wherein the first frame message is a stored state value of the vehicle body control module, and then the vehicle body control module executes corresponding action;
the preset time is 200ms, for example, that is, if the initialization of the vehicle-mounted infotainment system is completed, a first frame message is sent within 200ms, the first frame message is a stored state value of the vehicle body control module, and then the vehicle body control module executes a corresponding action.
S1023, if the initialization of the vehicle-mounted infotainment system is not completed, the first frame message is sent after the initialization of the vehicle-mounted infotainment system is completed.
According to the control method of the vehicle-mounted information entertainment system, the vehicle-mounted information entertainment system stores the state value of the vehicle body control module used by a user before dormancy in a false of the MCU, after the whole vehicle CAN network is awakened, the vehicle-mounted information entertainment system does not send CAN network messages before initialization is completed, and after the vehicle-mounted information entertainment system is initialized, the stored state value of the vehicle body control module is directly sent, so that the problem that the vehicle-mounted information entertainment system does not send the state value set by the user after the whole vehicle CAN network is awakened is solved, the condition that the vehicle-mounted information entertainment system fails in function CAN be avoided, and the use experience of the user is improved.
Based on the same invention concept, an embodiment of the invention provides a vehicle-mounted infotainment system control system, the vehicle-mounted infotainment system is communicated with a vehicle body control module of an automobile through a CAN network, and the vehicle-mounted infotainment system comprises an SOC chip, an MCU, an RAM and a CAN transceiver:
when the whole vehicle is in dormancy, the vehicle body control module and the vehicle-mounted infotainment system are in dormancy, the vehicle-mounted infotainment system is used for storing a state value of the vehicle body control module used by a user before dormancy in false of an MCU, the MCU is electrically connected with the CAN transceiver, and the CAN transceiver is connected with a CAN network of the whole vehicle;
and after the CAN network of the whole vehicle is awakened, the vehicle-mounted infotainment system does not send CAN network messages before the initialization is completed, and the vehicle-mounted infotainment system directly sends the stored state value of the vehicle body control module after the initialization is completed.
In this embodiment, the initial state of the vehicle body control module is a closed state, and when a user uses the vehicle body control module, the vehicle body control module is set to an open state, and a state value at this time is stored in false of the MCU.
In this embodiment, if false erasing of the SOC chip fails, the vehicle-mounted infotainment system backs up a state value to the RAM of the SOC chip.
In this embodiment, after the whole vehicle CAN network is woken up, if the initialization of the vehicle-mounted infotainment system is completed, the vehicle-mounted infotainment system sends a first frame message within a preset time, the first frame message is a stored state value of the vehicle body control module, and then the vehicle body control module executes a corresponding action;
and if the initialization of the vehicle-mounted infotainment system is not completed, the first frame message is sent again after the initialization of the vehicle-mounted infotainment system is completed.
In this embodiment, the preset time is 200ms.
According to the vehicle-mounted infotainment system control system provided by the embodiment, the vehicle-mounted infotainment system CAN store the state value of the vehicle body control module used by a user before dormancy in the false of the MCU, after the whole vehicle CAN network is awakened, the vehicle-mounted infotainment system does not send CAN network messages before initialization is completed, and after the initialization of the vehicle-mounted infotainment system is completed, the stored state value of the vehicle body control module is directly sent, so that the problem that the vehicle-mounted infotainment system does not send the state value set by the user after the whole vehicle CAN network is awakened is solved, the occurrence of the condition that the vehicle-mounted infotainment system fails in function CAN be avoided, and the use experience of the user is improved.
It should be understood that portions of the present invention may be implemented in hardware, software, firmware, or a combination thereof. In the above embodiments, the various steps or methods may be implemented in software or firmware stored in memory and executed by a suitable instruction execution system. For example, if implemented in hardware, as in another embodiment, any one or combination of the following techniques, which are known in the art, may be used: the present invention relates to a discrete logic circuit of a logic gate circuit, and more particularly to a discrete logic circuit of a logic gate circuit for realizing a logic function for a data signal, an application specific integrated circuit having a suitable combinational logic gate circuit, a Programmable Gate Array (PGA), a Field Programmable Gate Array (FPGA), and the like.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
While embodiments of the invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.
Claims (4)
1. A control method of a vehicle-mounted infotainment system is characterized in that the vehicle-mounted infotainment system is communicated with a vehicle body control module of an automobile through a CAN network, the vehicle-mounted infotainment system comprises an SOC chip, an MCU, an RAM and a CAN transceiver, and the method comprises the following steps:
when the whole vehicle is dormant, the vehicle body control module and the vehicle-mounted infotainment system are dormant, the vehicle-mounted infotainment system stores the state value of the vehicle body control module used by a user before dormancy in false of an MCU (microprogrammed control unit), the MCU is electrically connected with the CAN transceiver, and the CAN transceiver is connected with a CAN network of the whole vehicle;
after the CAN network of the whole vehicle is awakened, the CAN network message is not sent before the initialization of the vehicle-mounted infotainment system is completed, and the stored state value of the vehicle body control module is directly sent after the initialization of the vehicle-mounted infotainment system is completed;
the initial state of the vehicle body control module is a closed state, when a user uses the vehicle body control module, the vehicle body control module is set to be in an open state, and the state value at the moment is stored in false of the MCU;
after the step of storing the state value at this time in false of the MCU, the method further includes:
judging whether the false erasing of the SOC chip fails or not;
if false erasing of the SOC chip fails, backing up a state value into an RAM of the SOC chip;
when the CAN network of the whole vehicle is awakened, the CAN network message is not sent before the vehicle-mounted infotainment system is initialized, and the step of directly sending the stored state value of the vehicle body control module after the vehicle-mounted infotainment system is initialized specifically comprises the following steps:
after the CAN network of the whole vehicle is awakened, judging whether the initialization of the vehicle-mounted infotainment system is finished or not;
if the initialization of the vehicle-mounted infotainment system is completed, a first frame message is sent within a preset time, the first frame message is a stored state value of the vehicle body control module, and then the vehicle body control module executes corresponding action;
and if the initialization of the vehicle-mounted infotainment system is not completed, the first frame message is sent again after the initialization of the vehicle-mounted infotainment system is completed.
2. The in-vehicle infotainment system control method according to claim 1, characterized in that the preset time is 200ms.
3. The vehicle-mounted infotainment system control system is characterized in that the vehicle-mounted infotainment system is communicated with a vehicle body control module of an automobile through a CAN network, and comprises an SOC chip, an MCU, an RAM and a CAN transceiver:
when the whole vehicle is in dormancy, the vehicle body control module and the vehicle-mounted infotainment system are in dormancy, the vehicle-mounted infotainment system is used for storing a state value of the vehicle body control module used by a user before dormancy in a false of an MCU, the MCU is electrically connected with the CAN transceiver, and the CAN transceiver is connected with a CAN network of the whole vehicle;
after the CAN network of the whole vehicle is awakened, the CAN network message is not sent before the initialization of the vehicle-mounted infotainment system is completed, and the stored state value of the vehicle body control module is directly sent after the initialization of the vehicle-mounted infotainment system is completed;
the initial state of the vehicle body control module is a closed state, when a user uses the vehicle body control module, the vehicle body control module is set to be in an open state, and the state value at the moment is stored in the false of the MCU;
if false erasing of the SOC fails, the vehicle-mounted infotainment system backs up a state value to an RAM of the SOC;
after the CAN network of the whole vehicle is awakened, if the initialization of the vehicle-mounted infotainment system is completed, the vehicle-mounted infotainment system sends a first frame message within preset time, wherein the first frame message is a stored state value of the vehicle body control module, and then the vehicle body control module executes corresponding action;
and if the initialization of the vehicle-mounted infotainment system is not completed, the first frame message is sent after the initialization of the vehicle-mounted infotainment system is completed.
4. The in-vehicle infotainment system control system according to claim 3, characterized in that the preset time is 200ms.
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