CN111845376A

CN111845376A - Reset control method, device, equipment and storage medium

Info

Publication number: CN111845376A
Application number: CN202010673709.3A
Authority: CN
Inventors: 朱列铭; 牛胜福; 姜辛; 方康
Original assignee: Shanghai Yuancheng Automobile Technology Co Ltd
Current assignee: Shanghai Yuancheng Automobile Technology Co Ltd
Priority date: 2020-07-14
Filing date: 2020-07-14
Publication date: 2020-10-30

Abstract

The invention discloses a reset control method, a reset control device, reset equipment and a storage medium. Wherein the method comprises the following steps: determining the current working state of the vehicle; when the vehicle control unit is in an initialization state, determining whether the vehicle control unit is in a reset state according to the current working state of the vehicle; and if so, controlling the vehicle control unit to jump to the current working state so as to enable the vehicle to continuously keep the current working state. According to the technical scheme of the embodiment of the invention, whether the vehicle controller is in the reset state or not is judged according to the current working state of the vehicle, and the vehicle controller immediately returns to the working state before reset after the reset state is judged, so that the problems that power is lost in the driving process or the vehicle cannot be charged due to reset in the charging process are solved.

Description

Reset control method, device, equipment and storage medium

Technical Field

The embodiment of the invention relates to the technical field of vehicle control, in particular to a reset control method, a reset control device, reset control equipment and a storage medium.

Background

The Vehicle Control Unit (VCU) is used as a core decision Unit of the pure electric Vehicle, is equivalent to the brain of the Vehicle, and is responsible for controlling the functions of starting and stopping, running, charging and the like of the Vehicle, and is inevitably Reset (Reset) as an embedded controller.

In general, when the vehicle control unit is reset, the vehicle control unit cannot maintain a state before reset in a driving process, power is lost in the driving process, a driver needs to react and take a braking or lane changing action, and although the vehicle control unit is controllable, a large risk exists; and reset in the charging process, so that charging cannot be carried out, and the use of the vehicle owner can be influenced.

Disclosure of Invention

The invention provides a reset control method, a reset control device, reset equipment and a storage medium, which are used for continuously keeping the current working state of a vehicle after a vehicle controller is reset.

In a first aspect, an embodiment of the present invention provides a reset control method, where the method includes:

determining the current working state of the vehicle;

when the vehicle control unit is in an initialization state, determining whether the vehicle control unit is in a reset state according to the current working state of the vehicle;

and if so, controlling the vehicle control unit to jump to the current working state so as to enable the vehicle to continuously keep the current working state.

In a second aspect, an embodiment of the present invention further provides a reset control apparatus, where the apparatus includes:

the working state determining module: for determining the current operating state of the vehicle;

A reset judgment module: the method comprises the steps that when the vehicle control unit is in an initialization state, whether the vehicle control unit is in a reset state or not is determined according to the current working state of the vehicle;

and the resetting and maintaining module is used for controlling the vehicle controller to jump to the current working state so as to enable the vehicle to continuously maintain the current working state.

In a third aspect, an embodiment of the present invention further provides an apparatus, where the apparatus includes:

one or more processors;

a storage device for storing one or more programs,

when the one or more programs are executed by the one or more processors, the one or more processors are caused to implement a reset control method according to any one of the embodiments of the present invention.

In a fourth aspect, the embodiments of the present invention further provide a computer-readable storage medium, on which a computer program is stored, where the computer program, when executed by a processor, implements a reset control method according to any one of the embodiments of the present invention.

According to the method, the current working state of the vehicle is determined, when the vehicle controller is in an initialization state, whether the vehicle controller is in a reset state is determined according to the current working state of the vehicle, and if yes, the vehicle controller is controlled to jump to the current working state, so that the vehicle can continuously keep the current working state. According to the technical scheme of the embodiment of the invention, whether the vehicle controller is in the reset state or not is judged according to the current working state of the vehicle, and the vehicle controller immediately jumps to the working state before resetting after the reset state is judged, so that the problems that power is lost in the driving process or the vehicle controller cannot be charged due to resetting in the charging process are solved.

Drawings

Fig. 1 is a flowchart of a reset control method according to an embodiment of the present invention;

fig. 2 is a flowchart of a reset control method according to a second embodiment of the present invention;

fig. 3 is a schematic structural diagram of a reset control apparatus according to a third embodiment of the present invention;

fig. 4 is a schematic structural diagram of an apparatus according to a fourth embodiment of the present invention.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.

Example one

Fig. 1 is a flowchart of a reset control method according to an embodiment of the present invention, where the method is applicable to a situation where a controller of a vehicle is reset, and the method may be executed by a reset control device, where the device may be implemented by software and/or hardware. Referring to fig. 1, the method specifically includes the following steps:

and S110, determining the current working state of the vehicle.

Typically, the reset control method in this embodiment may control when the VCU in the electric vehicle is reset. The power System of the pure electric vehicle mainly comprises a Motor (including a Motor Control Unit (MCU)), a battery (including a Battery Management System (BMS)), and a VCU. Furthermore, high-voltage Air conditioners (HVAC), Direct Current transformers (DCDC), On-board chargers (OBC), etc., as well as Body Controllers (BCM) and Shift Controllers (SCM) that interact with the VCU via signals, are also included.

In the running process of the pure electric vehicle, the VCU can be reset in order to ensure the stable running of the controller. When the VCU is reset, in this embodiment, the VCU may determine the current working state of the vehicle by obtaining real-time signals from other node controllers on a node of the same Controller Area Network (CAN).

Specifically, determining the current operating state of the vehicle includes: acquiring real-time signals of other vehicle controllers in communication connection with the vehicle control unit through a controller local area network; and determining the current working state of the vehicle according to the real-time signal.

For example, refer to the following table, which is a table illustrating real-time signals and corresponding signal interpretation information of other controllers acquired by the VCU through the CAN in the embodiment of the present invention. Wherein, the power mode signal of BCM corresponds to the signal state: Off/ACC/On/Start, wherein in the Off/ACC state, the VCU does not close the main relay generally except in the direct current/alternating current charging; in the On state, the VCU closes the main relay; in the On state, the VCU enters the READY state when receiving the driving operation (brake stepping and gear shifting) of the driver. And the BCM receives a READY instruction sent by the VCU and switches the power mode to Start. The VCU must be Ready when it is in Start state. The signal state corresponding to the gear signal of the SCM is as follows: the device comprises a P/R/N/D device, a power supply, a transmission and a control device, wherein the P gear is a parking gear, the R gear is a reverse gear, the N gear is a neutral gear, and the D gear is a forward gear. The vehicle body Electronic Stability Program (ESP) provides a vehicle speed signal, and if other vehicle controllers can also provide the vehicle speed signal, the vehicle speed signals can be processed according to priority. The main relay state of BMS, the signal state of quick charge relay state and slow charge relay state do: Closed/Open, meaning Closed or Open. Further, the BMS states corresponding to the BMS are Standby/Discharge/Charge, which respectively represent Standby, non-charging and charging.

The obtained real-time signals of other controllers can be different according to different vehicle types, and redundancy can be performed on the existing signals by adding other signals.

In this embodiment, the VCU may further determine the current operating state of the vehicle according to the following table, which is further referred to as the following table:

for example, when the VCU acquires the signal status of the other controller through the CAN, the following condition is satisfied: (power supply mode is START) & (gear D/R) & (master electrical device state matched) & (fast charging relay state Open) & (slow charging relay state Open) & (BMS state Discharge), it is indicated that the vehicle is currently in an operating state of traveling.

Signal	Running	AC charging	Direct current charging
				Power mode	START	Off/ACC/On	Off/ACC/On
Gear position	D/R	P	P
				Vehicle speed	-	0 speed	0 speed
Main relay state	Closure is provided	Closure is provided	Closure is provided
				Fast charge relay state	Open	Open	Closure is provided
Slow charge relay state	Open	Closure is provided	Open
				BMS status	Discharge	Charge	Charge

It should be noted that the real-time signals corresponding to the controllers in the embodiment of the present invention are only examples, and for different vehicle models, the obtained real-time signals and the judgment conditions of the vehicle operating state may be flexibly adjusted and selected, which are all within the protection scope of the embodiment of the present invention.

Further, after the VCU is reset, the CAN module immediately sends a signal after initialization is completed, the signal at this time is a predetermined initial value, and the initial value of the related signal should be ensured not to cause the state exit. For example, the preset initial value may be "hold" to keep the current state from exiting. And the VCU reset fault is not associated with special fault action, so that the normal and safe running of the vehicle can be ensured.

And S120, when the vehicle control unit is in an initialization state, determining whether the vehicle control unit is in a reset state according to the current working state of the vehicle.

In this embodiment, when the VCU is in the initialization state, two different operating states corresponding to the VCU are provided, one is that the VCU performs power-on initialization normally, and the other is that the VCU performs initialization after reset.

Specifically, if it is determined that the vehicle is currently in a driving or charging state according to the real-time signals acquired by the other sensors, and the VCU is in an initialization state at this time, it may be determined that the current VCU is in a reset state.

Further, in this embodiment, the real-time signal processing and the reset state determination set a higher priority, so as to ensure that the VCU can be determined in time when the reset operation occurs.

And S130, if so, controlling the VCU to jump to the current working state so as to enable the vehicle to continuously keep the current working state.

In this embodiment, since the VCU acquires the signals of the other controllers in real time through the CAN signal, after the VCU is reset, before the control strategy is re-run, the CAN has received at least one of the real-time signals, so that the control strategy CAN determine that the VCU is in the reset state in the first period, thereby ensuring that the VCU CAN jump to the current working state in the first period and continue to maintain the driving state or the charging state.

Furthermore, if it is determined that the current operating state of the vehicle is in a state other than the running charging state, the vehicle can continue to maintain the normal operating state in the reset state, and therefore the reset control operation does not need to be executed.

According to the technical scheme of the embodiment, the current working state of the vehicle is determined, when the VCU is in the initialization state, whether the VCU is in the reset state is determined according to the current working state of the vehicle, and if yes, the VCU is controlled to jump to the current working state, so that the vehicle is enabled to keep the current working state continuously. According to the technical scheme of the embodiment of the invention, whether the VCU is in the reset state or not is judged according to the current working state of the vehicle, and the VCU is immediately returned to the working state before resetting after the reset state is judged, so that the problems that power is lost in the driving process or the VCU cannot be charged due to resetting in the charging process are solved.

Example two

Fig. 2 is a flowchart of a reset control method provided in the second embodiment of the present invention, and in the second embodiment of the present invention, based on the foregoing embodiment, further details are performed on S120 and S130, referring to fig. 2, where the method includes:

and S210, determining the current working state of the vehicle.

And S220, when the vehicle control unit is in an initialization state, if the current working state of the vehicle is a driving state or a charging state, the vehicle control unit is in a reset state.

Wherein the charging state comprises an alternating current charging state and a direct current charging state.

In this embodiment, when the VCU is in the initialization state, the VCU determines that the current working state of the vehicle is in the driving state, the ac charging state, or the dc charging state according to the acquired real-time information of the other controls, and indicates that the VCU is currently in the reset state.

And S230, if the current working state of the vehicle is the running state, controlling the vehicle controller to jump to the running state within the reset preset time period after resetting so as to enable the vehicle to keep running state and continue running.

In this embodiment, the specific judgment condition that the current working state of the vehicle is the driving state refers to the description in the first embodiment, and details are not repeated.

The preset reset time may be a first period for executing the control strategy according to the embodiment of the present invention, and when it is determined that the vehicle is currently in the driving state, the VCU jumps to the driving state in the first control strategy period after resetting, so that the vehicle keeps the driving state and continues to drive.

Furthermore, the time for reporting the reset fault of the VCU by the other controllers is longer than the preset reset time of the VCU, so that the state before reset can be ensured to be not discovered by a user and not perceived by an owner when the VCU can be recovered in the first time after the reset operation occurs, and the complaint of the owner is avoided.

And S240, if the current working state of the vehicle is a charging state, controlling the vehicle controller to jump to the charging state within a reset time period after resetting so as to enable the vehicle to keep the charging state to continue charging.

In this embodiment, when the real-time signals of the other controllers acquired by the VCU through the CAN satisfy the following conditions: (power supply mode Off/Acc/On) & (gear position P) & (0 vehicle speed) & (main relay Closed) & (slow charging relay Closed) & (fast charging relay Open) & & (BMS Charge), and it is possible to obtain that the current operating state of the vehicle is an alternating current charging state.

When the VCU obtains other controlled real-time signals through the CAN, the VCU meets the following conditions: (power supply mode Off/Acc/On) & (gear position P) & (0 vehicle speed) & (main relay Closed) & (slow charging relay Open) & (fast charging relay Closed) & & (BMS Charge), and it is possible to obtain that the current operating state of the vehicle is an alternating current charging state.

When the vehicle is judged to be in any one of the charging states, the VCU jumps to the corresponding charging state in the first control strategy period after resetting, so that the vehicle keeps the charging state to continue charging, and the damage to an electric appliance or a relay or a battery caused by cutting off a high-voltage relay in the power utilization state is avoided.

According to the technical scheme provided by the embodiment of the invention, the VCU judges the current state of the VCU by acquiring the real-time signals of other node controllers on the CAN, and continuously maintains the current working state of the vehicle after the VCU is reset, so that the VCU is reset in the driving process of the vehicle, power loss CAN not occur, and the safety of lives and properties of people on the vehicle is ensured; under the charging state, the VCU is reset, and the charging can be continuously carried out without influencing the use of the vehicle owner. In addition, the reset control method provided by the embodiment of the invention is suitable for all VCU types, does not need special internal functions of the VCU, and has simple implementation mode and no extra cost; the method can be suitable for different vehicle architectures, and signals and judgment conditions can be adjusted according to the actual vehicle architecture.

It should be noted that, in this embodiment, the execution of the steps does not have a fixed sequence, and may be adjusted according to an actual application scenario. The reset control method provided in the embodiment of the present invention determines the current state of the VCU by using other controllers that operate simultaneously, and may also obtain the required signal information by using the VUC sensor, so the reset control method that determines the state of the VUC by using the signal obtaining manner and obtaining signals of other different controllers is within the protection scope of the embodiment of the present invention.

EXAMPLE III

Fig. 3 is a schematic structural diagram of a reset control apparatus according to a third embodiment of the present invention, where the apparatus may be implemented in a software and/or hardware manner, and referring to fig. 3, the apparatus specifically includes: an operational status determination module 310, a reset determination module 320, and a reset hold module 330.

Wherein the operating state determining module 310: for determining the current operating state of the vehicle;

the reset determination module 320: the method comprises the steps that when the vehicle control unit is in an initialization state, whether the vehicle control unit is in a reset state or not is determined according to the current working state of the vehicle;

and the reset maintaining module 330 is configured to control the vehicle control unit to jump to the current operating state, so that the vehicle continues to maintain the current operating state.

The working state determining module 310 is specifically configured to: acquiring real-time signals of other vehicle controllers in communication connection with the vehicle control unit through a controller local area network;

and determining the current working state of the vehicle according to the real-time signal.

The reset determining module 320 is specifically configured to: when the vehicle control unit is in an initialization state, if the current working state of the vehicle is a driving state or a charging state, the vehicle control unit is in a reset state.

The reset hold module 330 is specifically configured to: if the current working state of the vehicle is a running state, controlling the vehicle controller to jump to the running state within a preset reset time period after reset so as to enable the vehicle to keep the running state to continue running;

and if the current working state of the vehicle is a charging state, controlling the vehicle controller to jump to the charging state within a preset reset time period after resetting so as to enable the vehicle to keep the charging state to continue charging.

And the time for reporting the reset fault of the whole vehicle controller by the other controllers is longer than the preset reset time of the whole vehicle controller.

The reset control device provided by the embodiment of the invention can execute the reset control method provided by any embodiment of the invention, and has corresponding functional modules and beneficial effects of the execution method.

Example four

Fig. 4 is a schematic structural diagram of an apparatus according to a fourth embodiment of the present invention. Fig. 4 illustrates a block diagram of an exemplary device 12 suitable for use in implementing embodiments of the present invention. The device 12 shown in fig. 4 is only an example and should not bring any limitation to the function and scope of use of the embodiments of the present invention.

As shown in FIG. 4, device 12 is in the form of a general purpose computing device. The components of device 12 may include, but are not limited to: one or more processors or processing units 16, a system memory 28, and a bus 18 that couples various system components including the system memory 28 and the processing unit 16.

Bus 18 represents one or more of any of several types of bus structures, including a memory bus or memory controller, a peripheral bus, an accelerated graphics port, and a processor or local bus using any of a variety of bus architectures. By way of example, such architectures include, but are not limited to, Industry Standard Architecture (ISA) bus, micro-channel architecture (MAC) bus, enhanced ISA bus, Video Electronics Standards Association (VESA) local bus, and Peripheral Component Interconnect (PCI) bus.

Device 12 typically includes a variety of computer system readable media. Such media may be any available media that is accessible by device 12 and includes both volatile and nonvolatile media, removable and non-removable media.

The system memory 28 may include computer system readable media in the form of volatile memory, such as Random Access Memory (RAM)30 and/or cache memory 32. Device 12 may further include other removable/non-removable, volatile/nonvolatile computer system storage media. By way of example only, storage system 34 may be used to read from and write to non-removable, nonvolatile magnetic media (not shown in FIG. 4, and commonly referred to as a "hard drive"). Although not shown in FIG. 4, a magnetic disk drive for reading from and writing to a removable, nonvolatile magnetic disk (e.g., a "floppy disk") and an optical disk drive for reading from or writing to a removable, nonvolatile optical disk (e.g., a CD-ROM, DVD-ROM, or other optical media) may be provided. In these cases, each drive may be connected to bus 18 by one or more data media interfaces. Memory 28 may include at least one program product having a set (e.g., at least one) of program modules that are configured to carry out the functions of embodiments of the invention.

A program/utility 40 having a set (at least one) of program modules 42 may be stored, for example, in memory 28, such program modules 42 including, but not limited to, an operating system, one or more application programs, other program modules, and program data, each of which examples or some combination thereof may comprise an implementation of a network environment. Program modules 42 generally carry out the functions and/or methodologies of the described embodiments of the invention.

Device 12 may also communicate with one or more external devices 14 (e.g., keyboard, pointing device, display 24, etc.), with one or more devices that enable a user to interact with device 12, and/or with any devices (e.g., network card, modem, etc.) that enable device 12 to communicate with one or more other computing devices. Such communication may be through an input/output (I/O) interface 22. Also, the device 12 may communicate with one or more networks (e.g., a Local Area Network (LAN), a Wide Area Network (WAN), and/or a public network, such as the Internet) via the network adapter 20. As shown, the network adapter 20 communicates with the other modules of the device 12 via the bus 18. It should be understood that although not shown in the figures, other hardware and/or software modules may be used in conjunction with device 12, including but not limited to: microcode, device drivers, redundant processing units, external disk drive arrays, RAID systems, tape drives, and data backup storage systems, among others.

The processing unit 16 executes various functional applications and data processing by executing programs stored in the system memory 28, for example, to implement a reset control method provided by an embodiment of the present invention.

EXAMPLE five

Fifth, an embodiment of the present invention further provides a computer-readable storage medium, on which a computer program is stored, where the computer program, when executed by a processor, implements a reset control method according to any one of the embodiments of the present invention. Wherein the method comprises the following steps: determining the current working state of the vehicle;

Computer storage media for embodiments of the invention may employ any combination of one or more computer-readable media. The computer readable medium may be a computer readable signal medium or a computer readable storage medium. A computer readable storage medium may be, for example, but not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any combination of the foregoing. More specific examples (a non-exhaustive list) of the computer readable storage medium would include the following: an electrical connection having one or more wires, a portable computer diskette, a hard disk, a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disc read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing. In the context of this document, a computer readable storage medium may be any tangible medium that can contain, or store a program for use by or in connection with an instruction execution system, apparatus, or device.

A computer readable signal medium may include a propagated data signal with computer readable program code embodied therein, for example, in baseband or as part of a carrier wave. Such a propagated data signal may take many forms, including, but not limited to, electro-magnetic, optical, or any suitable combination thereof. A computer readable signal medium may also be any computer readable medium that is not a computer readable storage medium and that can communicate, propagate, or transport a program for use by or in connection with an instruction execution system, apparatus, or device.

Program code embodied on a computer readable medium may be transmitted using any appropriate medium, including but not limited to wireless, wireline, optical fiber cable, RF, etc., or any suitable combination of the foregoing.

Computer program code for carrying out operations for aspects of the present invention may be written in any combination of one or more programming languages, including an object oriented programming language such as Java, Smalltalk, C + + or the like and conventional procedural programming languages, such as the "C" programming language or similar programming languages. The program code may execute entirely on the user's computer, partly on the user's computer, as a stand-alone software package, partly on the user's computer and partly on a remote computer or entirely on the remote computer or server. In the case of a remote computer, the remote computer may be connected to the user's computer through any type of network, including a Local Area Network (LAN) or a Wide Area Network (WAN), or the connection may be made to an external computer (for example, through the Internet using an Internet service provider).

It is to be noted that the foregoing is only illustrative of the preferred embodiments of the present invention and the technical principles employed. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail by the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present invention, and the scope of the present invention is determined by the scope of the appended claims.

Claims

1. A reset control method, the method comprising:

determining the current working state of the vehicle;

2. The method of claim 1, wherein determining the current operating state of the vehicle comprises:

Acquiring real-time signals of other vehicle controllers in communication connection with the vehicle control unit through a controller local area network;

3. The method of claim 1, wherein determining whether the vehicle control unit is in a reset state according to a current operating state of the vehicle when the vehicle control unit is in an initialization state comprises:

when the vehicle control unit is in an initialization state, if the current working state of the vehicle is a driving state or a charging state, the vehicle control unit is in a reset state.

4. The method of claim 1, wherein controlling the vehicle control unit to jump to the current operating state to keep the vehicle in the current operating state comprises:

if the current working state of the vehicle is a running state, controlling the vehicle controller to jump to the running state within a preset reset time period after reset so as to enable the vehicle to keep the running state to continue running;

5. The method according to any one of claims 1 to 4, wherein the time for the other controllers to report the vehicle control unit to generate the reset fault is longer than the preset reset time of the vehicle control unit.

6. A reset control apparatus, the apparatus comprising:

and the resetting and maintaining module is used for controlling the vehicle control unit to jump to the current working state so as to enable the vehicle to continuously maintain the current working state.

7. The apparatus according to claim 6, wherein the operating state determining module is specifically configured to:

8. The apparatus of claim 6, wherein the reset determination module is specifically configured to:

9. An apparatus, characterized in that the apparatus comprises:

one or more processors;

a storage device for storing one or more programs,

when executed by the one or more processors, cause the one or more processors to implement a reset control method as recited in any of claims 1-5.

10. A computer-readable storage medium, on which a computer program is stored, which, when being executed by a processor, carries out a reset control method according to any one of claims 1-5.