CN110696770A

CN110696770A - Vehicle anti-theft method, device, readable medium and electric vehicle

Info

Publication number: CN110696770A
Application number: CN201810750160.6A
Authority: CN
Inventors: 赖日飞; 郭洪江
Original assignee: Guangzhou Xiaopeng Motors Technology Co Ltd
Current assignee: Guangzhou Xiaopeng Motors Technology Co Ltd
Priority date: 2018-07-10
Filing date: 2018-07-10
Publication date: 2020-01-17

Abstract

The invention discloses a vehicle anti-theft method, a vehicle anti-theft device, a readable medium and an electric vehicle, and belongs to the technical field of vehicle safety.A method and a device provided by the invention detect whether a driver is on a driving position or not when detecting that a related component of the driving position of the vehicle generates a first trigger event representing that the driver leaves the vehicle under the static state and the non-power-off state of the vehicle; and detecting whether a vehicle key is in the vehicle when detecting that a second trigger event which is characterized by the driver leaving the vehicle occurs to a related component of the vehicle driving position; and if the detection results are negative, controlling the permanent magnet synchronous motor in the vehicle to enter a short-circuit mode. When the vehicle is static and is in a non-power-off state, when a driver is detected not to be in a driving position and a vehicle key is not in the vehicle, the permanent magnet synchronous motor in the vehicle is driven in time to enter a short circuit mode, so that the permanent magnet synchronous motor cannot output driving torque and generates large resisting torque during rotation, and the dragging-preventing or stealing-preventing effect is achieved.

Description

Vehicle anti-theft method, device, readable medium and electric vehicle

Technical Field

The invention relates to the technical field of automobile safety, in particular to an automobile anti-theft method, an automobile anti-theft device, a readable medium and an electric automobile.

Background

With the development of economy, the popularity of vehicles is higher and higher, but the problem of vehicle theft also comes along.

The existing vehicle anti-theft methods are key check between vehicle controllers before the vehicle is started and key check between the vehicle controllers and vehicle keys, and the vehicle can be normally started after the key check is passed. Under the condition, the vehicle, especially the electric automobile, is quite quiet in environment due to the fact that the driving motor does not have noise in a parking state, and a driver forgets to power off and lock the vehicle easily, so that the vehicle can be driven away or dragged away by illegal people, and economic loss is brought to the driver.

Therefore, how to improve the anti-theft capability of the vehicle and avoid the problem that the vehicle is driven away or dragged away by illegal personnel is a first consideration.

Disclosure of Invention

The embodiment of the invention provides a vehicle anti-theft method, a vehicle anti-theft device, a readable medium and an electric vehicle, which are used for improving the anti-theft capability of the vehicle and avoiding the problems that the vehicle is driven away or dragged away by illegal personnel and the like.

In a first aspect, an embodiment of the present invention provides a vehicle anti-theft method, including:

when a related component of a driving position of the vehicle is detected to generate a first trigger event representing that a driver leaves the vehicle, detecting whether the driver is on the driving position or not when the vehicle is static and in a non-power-off state; and

detecting whether a vehicle key is in the vehicle or not when a second trigger event which is characterized by the fact that a driver leaves the vehicle occurs in a related component of the driving position of the vehicle;

and if the detection result is negative, controlling the permanent magnet synchronous motor in the vehicle to enter a short-circuit mode.

When the vehicle is static and is in a non-power-off state, when a driver is detected not to be in a driving position and a vehicle key is not in the vehicle, the permanent magnet synchronous motor in the vehicle is driven in time to enter a short circuit mode, so that the permanent magnet synchronous motor cannot output driving torque and generates large resisting torque during rotation, and the dragging-preventing or stealing-preventing effect is achieved.

In a second aspect, an embodiment of the present invention provides a vehicle theft preventing device, including:

the first detection unit is used for detecting whether the driver is on the driving position or not when a first trigger event which indicates that the driver leaves the vehicle occurs to a related component of the driving position of the vehicle when the vehicle is static and in a non-powered-off state;

the second detection unit is used for detecting whether the vehicle key is in the vehicle or not when a second trigger event which indicates that the driver leaves the vehicle is detected to occur on the related component of the vehicle driving position;

and the control unit is used for controlling the permanent magnet synchronous motor in the vehicle to enter a short-circuit mode if the detection results of the first detection unit and the second detection unit are negative.

In a third aspect, an embodiment of the present invention provides a computer-readable medium storing computer-executable instructions for performing the vehicle anti-theft method provided in the present application.

In a fourth aspect, an embodiment of the present invention provides an electric vehicle, including:

at least one processor; and

a memory communicatively coupled to the at least one processor; wherein the content of the first and second substances,

the memory stores instructions executable by the at least one processor to enable the at least one processor to perform the vehicle anti-theft methods provided herein.

The invention has the beneficial effects that:

according to the vehicle anti-theft method, the vehicle anti-theft device, the readable medium and the electric vehicle, when a vehicle is static and is in a non-power-off state and a first trigger event representing that a driver leaves the vehicle is detected to occur on a related component of a driving position of the vehicle, whether the driver is on the driving position is detected; and detecting whether a vehicle key is in the vehicle when detecting that a second trigger event which is characterized by the driver leaving the vehicle occurs to a related component of the vehicle driving position; and if the detection result is negative, controlling the permanent magnet synchronous motor in the vehicle to enter a short-circuit mode. When the vehicle is static and is in a non-power-off state, when a driver is detected not to be in a driving position and a vehicle key is not in the vehicle, the permanent magnet synchronous motor in the vehicle is driven in time to enter a short circuit mode, so that the permanent magnet synchronous motor generates a very large resistance moment at a very small motor rotating speed, the vehicle is dragged to be abnormal and difficult, and the purpose of preventing the trailer and the vehicle from being stolen can be achieved.

Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and not to limit the invention. In the drawings:

FIG. 1 is a schematic diagram of a vehicle anti-theft method according to an embodiment of the present invention;

FIG. 2 is a flow chart of a vehicle anti-theft method according to an embodiment of the present invention;

FIG. 3 is a schematic view illustrating a process of detecting whether a driver is in a driving position according to an embodiment of the present invention;

fig. 4 is a schematic flowchart illustrating a process of determining whether the state information of the door at the driving position meets a preset detection condition according to an embodiment of the present invention;

fig. 5 is a schematic flowchart illustrating a process of determining whether the state information of the seat belt in the driving seat meets a preset detection condition according to an embodiment of the present invention;

FIG. 6 is a schematic diagram of a process for detecting whether a vehicle key is on a vehicle according to an embodiment of the present invention;

FIG. 7 is a schematic diagram illustrating a relationship between a rotational speed of a motor and a torque of the motor when the motor is in a short circuit condition according to an embodiment of the present invention;

fig. 8 is a schematic diagram illustrating an effect of the motor controller driving the permanent magnet synchronous motor to enter the short-circuit mode according to the embodiment of the present invention;

fig. 9 is a schematic flowchart of a process for controlling the permanent magnet synchronous motor to exit the short-circuit mode according to an embodiment of the present invention;

fig. 10 is a schematic structural view of a vehicle theft preventing device according to an embodiment of the present invention;

fig. 11 is a schematic hardware structure diagram of a computing device for implementing a vehicle anti-theft method according to an embodiment of the present invention.

Detailed Description

The vehicle anti-theft method, the vehicle anti-theft device, the readable medium and the electric vehicle are used for improving the anti-theft capacity of the vehicle and avoiding the problems that the vehicle is driven away or dragged away by illegal personnel and the like.

The preferred embodiments of the present invention will be described below with reference to the accompanying drawings of the specification, it being understood that the preferred embodiments described herein are merely for illustrating and explaining the present invention, and are not intended to limit the present invention, and that the embodiments and features of the embodiments in the present invention may be combined with each other without conflict.

To facilitate understanding of the invention, the present invention relates to technical terms in which:

1. a power-off state: the method is characterized in that the electric automobile is in a normal flameout state, namely the output voltage of a Vehicle Control Unit (VCU) is adjusted to be low voltage, and components such as a direct current-direct current inverter (DCDC), a motor and a Battery Management System (BMS) are in a low-voltage and high-voltage power-off state.

2. Relevant components of the vehicle driver's seat: the components that can detect the driving position of the vehicle and the state of the driver include a pressure sensor of the driving position, a seat belt of the driving position, a brake pedal, a door of the driving position, and the like.

3. The permanent magnet synchronous motor is a synchronous motor which generates a synchronous rotating magnetic field by permanent magnet excitation, the permanent magnet is used as a rotor to generate a rotating magnetic field, and a three-phase stator winding induces three-phase symmetrical current through armature reaction under the action of the rotating magnetic field. The method is characterized in that: the short-circuit mode cannot respond to the torque demanded by the driver and produces a large drag torque when the motor has a small rotational speed.

In order to solve the problem that the vehicle can be driven or dragged by illegal people still existing in the anti-theft method adopted in the prior art, the embodiment of the invention provides a solution, referring to a schematic diagram of a principle shown in fig. 1, when a VCU detects that the vehicle is static and the vehicle is in a non-power-off state, the VCU starts to detect whether a first trigger event representing that a driver leaves the vehicle occurs on a relevant component of a driving position of the vehicle, and when the first trigger event is detected, whether the driver is in the driving position is detected; meanwhile, the VCU of the vehicle controller can detect whether a second trigger event representing that a driver leaves the vehicle occurs to related components of the driving position of the vehicle, and meanwhile, when the second trigger event is detected, a Passive Entry and Passive Start (PEPS) system detects whether a vehicle key is in the vehicle; when the VCU detects that the driver is not at the driving position and the VCU receives the detection result of the PEPS and determines that the vehicle key is not in the vehicle, the VCU sends a CAN bus signal for driving the motor to enter a short-circuit mode to the motor controller, so that the permanent magnet synchronous motor connected with the motor controller CAN be driven to enter the short-circuit mode.

It should be noted that, in the present invention, the vehicle is in a driving state before the vehicle is stationary, and when the vehicle is started before the vehicle is driven, the PEPS performs a key verification process, that is: it is determined whether the keys between the vehicle keys and the PEPS, the PEPS and the vehicle controller, and the PEPS and the VCU match. The vehicle controller in the present invention may include, but is not limited to: an automatic driving controller, an automatic parking controller and the like. The verification process for detecting whether the key between the PEPS and the VCU is matched is as follows: the PEPS randomly generates a random number, inputs the random number into a specific algorithm to generate an output result, then the PEPS sends the random number and the output result to the VCU, after the VCU receives the random number and the output result, the VCU first generates an output result by using the random number and the algorithm stored in the VCU, then whether the output result obtained by calculation is consistent with the received output result or not can be determined, and if so, the PEPS and the VCU are determined to pass the verification. Similarly, the key verification process between the vehicle controller and the PEPS is similar to the key verification process between the vehicle key and the PEPS and will not be described in detail herein. The VCU can only allow the vehicle to be started when all key verifications pass, otherwise the vehicle is prohibited from starting.

A data query method provided in accordance with an exemplary embodiment of the present invention is described below with reference to fig. 2-11 in conjunction with the schematic diagram of fig. 1. It should be noted that the above application scenarios are merely illustrated for the convenience of understanding the spirit and principles of the present invention, and the embodiments of the present invention are not limited in this respect. Rather, embodiments of the present invention may be applied to any scenario where applicable.

As shown in fig. 2, a schematic flow chart of a vehicle anti-theft method provided in an embodiment of the present invention includes the following steps:

and S11, when the vehicle is static and in a non-power-off state, and a first trigger event which indicates that the driver leaves the vehicle occurs to the related component of the driving position of the vehicle, detecting whether the driver is on the driving position.

In the step, the vehicle anti-theft method is implemented under the condition that the vehicle is switched from the running state to the static state and the driver does not perform power-off operation on the vehicle, the vehicle anti-theft method is meaningless to be executed when the vehicle runs, and if the vehicle is static and in the power-off state, the vehicle cannot be started without a vehicle key, so the vehicle anti-theft method provided by the invention is not needed to be implemented.

In addition, the invention sets the detection time for detecting whether the driver leaves the driving position, namely, whether a first trigger event for representing that the driver leaves the vehicle occurs to the related part of the driving position of the vehicle is detected, and whether the driver is on the driving position is detected when the first trigger event occurs, rather than detecting whether the driver is on the driving position all the time, so that the energy consumption loss caused by frequent detection can be avoided, and the time for detecting whether the driver is on the driving position is not missed.

The first triggering event that the relevant component of the vehicle driving seat of the present invention can characterize the driver leaving the vehicle may include, but is not limited to: the switching of the door of the vehicle, which detects the driving position, from a closed state to an open state, the switching of the seat belt, which detects the driving position, from a fastened state to an unfastened state, and the switching of the brake pedal in the vehicle from a pressed state to an unpressurized state are detected.

Specifically, when the door of the driving seat is detected to be switched from the closed state to the open state, an event which is triggered only when the driver leaves the vehicle may be detected, so that whether the driver leaves the vehicle or not can be detected when the event is detected. A triggering event, which is the detection of the driver's seat belt being fastened to and unfastened from the seat belt, also indicates that the driver is likely to leave the vehicle, as well as the detection of the brake pedal in the vehicle being switched from a stressed state to an unstressed state. When any one of the first trigger events occurs, whether the driver is in the driving position is detected.

Preferably, the method shown in fig. 3 may be adopted by the present invention to detect whether the driver is in the driving position, and may include the following steps:

and S21, determining the working state information of the relevant parts of the vehicle driving position.

The working state information in the invention comprises at least one of the following items: the state information of the door of the driver's seat, the state information of the seat belt of the driver's seat, the state information of the brake switch, the pressed state of the driver's seat, and the like.

In the specific implementation, the state information of the door of the driver's seat, the state information of the seat belt of the driver's seat, the state information of the brake switch, the pressed state of the driver's seat, and the like can be determined by using the existing technology. In this step, in order to accurately determine whether the driver is at the driving position, it is proposed that whether the driving position is at the driving position may be determined based on a plurality of pieces of operating state information.

And S22, if the working state information comprises at least two items, judging whether each item of working state information meets the preset detection condition.

And S23, if at least one item of working state information meets the preset detection condition, determining that the driver is not at the driving position.

And S24, if each item of working state information does not meet the preset detection condition, determining that the driver is at the driving position.

It can be determined that the driver is not in the driving position as long as one piece of the operation state information satisfies the preset detection condition based on the steps S21 to S24. Of course, when it is determined that more working state information satisfies the preset detection condition, it can be more accurately determined that the driver is not at the driving position.

Specifically, when the operating state information is the state information of the door in the driving seat, it may be determined whether the state information of the door in the driving seat meets the preset detection condition according to the flow shown in fig. 4, including the following steps:

s31, judging whether the state information of the door of the driving position is in an open state, if so, executing a step S32; otherwise, step S33 is executed.

And S32, determining that the state information of the door of the driving position meets the preset detection condition.

And S33, determining that the state information of the door of the driving position does not meet the preset detection condition.

Specifically, normally, the state information of the door includes two types, i.e., an open state and a closed state, and based on the flow shown in steps S31 to S33, the door in the driving seat refers to the door in the main driving seat of the vehicle, and after the first trigger event occurs, when the door in the driving seat is detected to be in the open state, it indicates that the driver has left the vehicle, and when the door is detected to be in the closed state, it indicates that the driver has not left the vehicle, i.e., the driver is still at the driving seat.

Preferably, when the operating state information is the state information of the seat belt in the driving seat, it may be determined whether the state information of the seat belt in the driving seat meets the preset detection condition according to the flow shown in fig. 5, including the following steps:

s41, judging whether the state information of the safety belt of the driving position is in an unfastened state, if so, executing a step S42; if not, go to step S43.

And S42, determining that the state information of the safety belt of the driving position meets the preset detection condition.

And S43, determining that the state information of the safety belt of the driving position does not meet the preset detection condition.

In the process shown in fig. 5, it may be detected whether the seat belt of the main driving seat in the vehicle is in an unfastened state, if so, it is determined that the driver has left the driving seat, otherwise, it is determined that the driver has not left the driving seat. When the working state information comprises the state information of the door of the driving position and the state information of the safety belt of the driving position, and when the door of the driving position is determined to be in an open state and the safety belt of the driving position is determined to be in an unfastened state, the driving position can be accurately determined not to be on the driving position.

Preferably, when the operating state information is the state information of the brake switch, it may be determined whether the state information of the brake switch satisfies a preset detection condition according to the following process: when the state information of the brake switch is detected to be a first set value, the state information of the brake switch is determined to meet the preset detection condition, and when the state information of the brake switch is detected to be a second set value, the state information of the brake switch is determined not to meet the preset detection condition. The first set value and the second set value in the present invention may be set according to actual conditions, and the present invention is not limited thereto.

For convenience of description, the first setting value may be 0, and the second setting value may be 1.

The brake switch is arranged on the brake pedal, the state information of the brake switch represents whether the brake pedal is pressed or not, the state information of the brake switch can be the output value of the brake switch, if the output value of the brake switch is determined to be 0, the brake pedal can be determined not to be stepped, namely the current output value of the brake switch is determined to be not on the driving position according to the preset detection condition, and the brake pedal can not be stepped; if the output value of the brake switch is 1, the brake pedal can be determined to be stepped, namely, the brake pedal is in a pressed state, that is, the current output value of the brake switch can be determined not to meet the preset detection condition, and the driver can be determined to step on the brake pedal in the driving position. Therefore, it is possible to determine whether the driver is in the driving position or not based on the output value of the brake switch.

When the working state information comprises the state information of the door of the driving position, the state information of the safety belt of the driving position and the state information of the brake pedal, when the fact that the door of the driving position is opened, the safety belt of the driving position is in an unfastened state and the brake pedal is not trampled is determined, it can be determined that the driver is not located at the driving position, and the accuracy of the detection result is further improved.

Preferably, when the operating state information is state information of the driving seat, it may be determined whether the state information of the driving seat meets a preset detection condition according to the following method: when the state information of the driving position is detected to be in a pressed state, determining that the state information of the driving position does not meet the preset detection condition; and when the state information of the driving position is determined to be in an uncompressed state, determining that the state information of the driving position meets a preset detection condition.

Specifically, the driver seat is a driving seat, a pressure sensor is mounted on the driving seat, the state of the driving seat can be detected through the pressure sensor, namely whether the driving seat is in a pressed state or not, and if the driving seat is determined to be in the pressed state, it is indicated that the driver sits on the driving seat and does not leave the vehicle; otherwise, it is determined that the driver has not sat on the driving seat to leave the vehicle.

When the working state information is the state information of the door of the driving position, the state information of the safety belt of the driving position, the state information of the brake pedal and the state information of the driving position, when the door of the driving position is opened, the safety belt of the driving position is in an unfastened state, the brake pedal is not stepped, and the driving position is in an unstressed state, the driver can be determined not to be in the driving position, and the accuracy of the detection result is further improved.

It should be noted that, in the present invention, the VCU executes step S11, that is, detects whether the first trigger event occurs and detects whether the driver is in the driving position when the first trigger event occurs; that is, the execution bodies in fig. 3 to 5 are all VCUs.

And S12, detecting whether the vehicle key is in the vehicle when detecting that the related component of the vehicle driving position generates a second trigger event which indicates that the driver leaves the vehicle.

The second trigger event in the present invention may include, but is not limited to: the switching of the door of the vehicle, which detects the driving position, from a closed state to an open state, the switching of the seat belt, which detects the driving position, from a fastened state to an unfastened state, and the switching of the brake pedal in the vehicle from a pressed state to an unpressurized state are detected.

Preferably, the second trigger event in the present invention may further include: the first preset time is reached after the door of the driver's seat is detected to be switched from the closed state to the open state, or the door of the driver's seat is detected to be switched from the closed state to the open state and then is switched to the closed state.

It should be noted that the detected first trigger event and the detected second trigger event may be the same or different, and may be determined according to actual situations. Since the vehicle key is usually carried by the driver, the first trigger event and the second trigger event can be set to be the same, but if the vehicle key is outside the vehicle door and close to the vehicle door or the vehicle door is opened, the distance between the vehicle key and the vehicle is very close, even in the vehicle, which may cause inaccurate detection result for detecting whether the vehicle key is in the vehicle, in order to avoid the problem, the invention can detect whether the vehicle key is in the vehicle after a first preset time after the vehicle door is switched from the closed state to the open state, namely a period of time after the driver opens the vehicle door, or detect whether the vehicle key is in the vehicle after the vehicle door of the driving position is switched from the closed state to the open state, namely after the driver opens the vehicle door, the vehicle door is closed again, so that the distance between the vehicle key and the vehicle is relatively far, based on this, the accuracy of the detection result of whether the vehicle key is in the vehicle can be improved.

Preferably, whether the vehicle key is on the vehicle can be detected according to the following method shown in fig. 6, which may include the following steps:

and S51, determining the distance between the vehicle key and the vehicle.

S52, judging whether the determined distance is larger than a preset distance threshold value; if yes, go to step S53; otherwise, step S54 is executed.

And S53, determining that the vehicle key is not in the vehicle.

And S54, determining that the vehicle key is in the vehicle.

In the flow shown in steps S51-S54, a signal sensing device is installed in the vehicle key, so that the PEPS in the vehicle sends a radio frequency signal to the vehicle key, and the vehicle key feeds back a response result to the PEPS after receiving the radio frequency signal, so that the PEPS can determine the distance between the vehicle key and the vehicle according to the received signal. And if the distance is determined to exceed the preset distance threshold, determining that the vehicle key is not in the vehicle, otherwise determining that the vehicle key is in the vehicle.

Based on this, the PEPS may check whether the vehicle key is in the vehicle based on the flow shown in fig. 6, determine that the vehicle key is not in the vehicle if it is determined that the check result is no, and generate a detection result of no detection to the VCU, so that the VCU performs step S13 when it is determined that the driver is not in the driving position and the vehicle key received the PEPS feedback is not in the vehicle.

And S13, controlling the permanent magnet synchronous motor in the vehicle to enter a short-circuit mode.

In the step, when the VCU determines that the driver is not at the driving position and the vehicle key is not in the vehicle, the permanent magnet synchronous motor in the vehicle is controlled to enter a short-circuit mode, so that the permanent magnet synchronous motor in the short-circuit mode cannot respond to the torque request of the driver, and meanwhile, a larger resisting moment is generated to stop rotating when the permanent magnet synchronous motor is dragged to rotate, and the purposes of forbidding vehicle driving and preventing the vehicle from being dragged or stolen are achieved. And if the detection result in any one of the step S11 and the step S12 is negative, keeping the normal working mode of the permanent magnet synchronous motor unchanged, namely the torque mode.

Specifically, referring to the schematic diagram of the change relationship between the motor rotation speed and the motor torque under the condition that the motor is in a short circuit shown in fig. 7, as can be seen from fig. 7, when the motor rotation speed is very low, which is equivalent to that the vehicle is in a stationary state, the motor torque is a negative value and the absolute value is large, which indicates that the resisting torque is large, and the vehicle is dragged abnormally and difficultly, so that the purpose of preventing the trailer, that is, the purpose of preventing the theft, can be achieved.

It should be noted that, in the present invention, the step S11 and the step S12 are not executed in a sequential order, and the step S11 may be executed first and then the step S12 may be executed, or the step S12 may be executed first and then the step S11 may be executed at the same time, and the present invention is not limited to this order.

In specific implementation, with reference to the schematic effect diagram of fig. 1 and 8 that the motor controller drives the permanent magnet synchronous motor to enter the short-circuit mode, the approximate process of the VCU when executing step S13 is as follows: the VCU sends a short-circuit mode switching instruction to a motor controller through a CAN bus, after the motor controller receives the short-circuit mode switching instruction, the motor controller controls a permanent magnet synchronous motor connected with the motor controller to enter a short-circuit mode by controlling input values of pins 1-6 of 6 Insulated Gate Bipolar Transistors (IGBTs), for example, the input values of pins 1-6 of the IGBTs are controlled, so that three upper arm IGBTs corresponding to the pins 1-3 are all in a conducting state, and three lower arm IGBTs corresponding to the pins 4-6 are all in a disconnecting state; or the input values of the pins 1 to 6 of the IGBT are controlled, so that the three upper arm IGBTs corresponding to the pins 1 to 3 are all in a disconnected state, and the three lower arm IGBTs corresponding to the pins 4 to 6 are all in a connected state, for example, the first phase input end of the permanent magnet synchronous motor is respectively connected with the IGBT corresponding to the pin 1 and the IGBT corresponding to the pin 4; the second input end of the permanent magnet synchronous motor is respectively connected with the IGBT corresponding to the pin 2 and the IGBT corresponding to the pin 5; the third input end of the permanent magnet synchronous motor is respectively connected with the IGBT corresponding to the pin 3 and the IGBT corresponding to the pin 6, so that when the IGBTs corresponding to the pins 1-3 are in a conducting state and the three lower arm IGBTs corresponding to the pins 4-6 are in a disconnecting state, the first phase input end, the second phase input end and the third phase input end of the permanent magnet synchronous motor can be driven to be connected, namely the permanent magnet synchronous motor enters a short-circuit mode, and the switching state of the IGBT in the short-circuit mode is in a locking state, so that the motor cannot respond to an external torque request, namely a vehicle cannot normally run; meanwhile, as the permanent magnet synchronous motor is in a three-phase short circuit state, as shown in fig. 7, when the motor rotates at a relatively low speed, the motor rotates to cut magnetic induction lines to generate a large resisting moment, so that the vehicle is difficult to drag, and the purpose of preventing the trailer is achieved.

Preferably, the vehicle anti-theft method provided by the present invention further includes a process shown in fig. 9, and may include the following steps:

and S61, detecting whether the driver is in the driving position when the related component of the driving position of the vehicle is detected to generate a third trigger event which is characterized by the fact that the driver returns to the vehicle.

When the driver is bound to return to the vehicle after leaving the vehicle, the driver needs to drive the vehicle when returning to the vehicle, so the permanent magnet synchronous motor cannot be always in the short-circuit mode, and therefore the invention provides the detection opportunity for detecting whether the driver returns to the vehicle. That is, in the invention, when the third trigger event which indicates that the driver returns to the vehicle occurs to the related component of the vehicle driving position, whether the driver is on the driving position is detected.

Preferably, the third triggering event in the present invention may include, but is not limited to: the switching of the door of the vehicle, in which the driving position is detected, from an open state to a closed state, the switching of the seat belt, in which the driving position is detected, from an unfastened state to a fastened state, and the switching of the brake pedal in the vehicle from an unpressurized state to a pressurized state, etc.

Specifically, when the door of the driving seat is detected to be switched from the open state to the closed state, an event which is triggered only when the driver enters the vehicle may be detected, so that whether the driver is in the driving seat or not can be detected when the event is detected. Furthermore, the triggering event, when the safety belt of the driver seat is detected to be switched from being unfastened to being fastened, may be a process of fastening the safety belt before the driver enters the vehicle and drives the vehicle, so that the detection of whether the driver is on the driver seat can be started after the triggering event. Similarly, when the brake pedal in the vehicle is detected to be switched from the non-pressed state to the pressed state, the process of stepping on the brake pedal executed when the vehicle is stopped before and then the driver returns to the vehicle and then the vehicle is driven is indicated, so that whether the driver is on the driving position can be detected after the event occurs.

When the third trigger event is detected to occur, whether the driver is in the driving position may be detected, and a specific detection method may refer to the description in step S11, and will not be described again here.

It should be noted that the VCU performs step S61.

And S62, detecting whether the vehicle key is in the vehicle when detecting that the related component of the vehicle driving position generates a fourth trigger event which indicates that the driver returns to the vehicle.

The fourth triggering event in the present invention may include, but is not limited to: the control device is characterized in that a vehicle door which detects a driving position is switched from an open state to a closed state, a safety belt which detects the driving position is switched from an unbuckled state to a fastened state, and a brake pedal in the vehicle is switched from an uncompressed state to a compressed state.

Specifically, since the vehicle key is generally carried around the driver, the fourth triggering event in the present invention may be the same as the third triggering event.

Preferably, the fourth triggering event in the present invention further includes: and the second preset time after the door of the driving position is detected to be switched from the closed state to the open state is reached, or the door of the driving position is detected to be switched from the closed state to the open state and then is switched to the closed state.

Specifically, since the distance between the vehicle key and the vehicle is very close when the vehicle key is outside and close to the vehicle door, or when the vehicle door is opened and the driver is getting off the vehicle, the detection result may be inaccurate, and therefore, it may be detected whether the vehicle key is in the vehicle when a second preset time after the vehicle door of the driving position is detected to be switched from the closed state to the open state is reached, because this time is the time when the driver may have entered the vehicle after opening the vehicle door, and the detection result of whether the vehicle key is in the vehicle may be more accurate. And another fourth triggering event, namely, the vehicle door detected in the driving position is switched to the closed state after being switched from the closed state to the open state, which can be understood as a process that the driver opens the vehicle door and then closes the vehicle door, and when the triggering event occurs, the detection result of whether the vehicle key is in the vehicle is more accurate.

It should be noted that the fourth trigger event is detected by the VCU, and when the VCU detects that the fourth trigger event occurs, the PEPS is required to detect whether the vehicle key is in the vehicle, and feed back the detection result to the VCU, and the detection process may refer to the flow of step S12, and will not be described in detail here.

And S63, if the detection results are yes, controlling the permanent magnet synchronous motor in the vehicle to exit the short-circuit mode.

In this step, after the VCU receives the detection result of whether the vehicle key is in the vehicle and the detection result of whether the VCU detects and obtains whether the driver is in the driving position sent by the PEPS, when it is determined that the driver is in the driving position and the vehicle key is in the vehicle, the permanent magnet synchronous motor in the vehicle is controlled to exit the short-circuit mode and enter the torque mode, and at this time, the motor can respond to an external torque request, the driving function of the vehicle is recovered, and the driver can regain the control right of the vehicle.

Preferably, if the detection result in any one of the step S61 and the step S62 is no, the short-circuit mode of the permanent magnet synchronous motor is kept unchanged.

Specifically, referring to fig. 8, the VCU may send an exit short-circuit mode command to the motor controller via the CAN bus, and after receiving the exit short-circuit mode command, the permanent magnet synchronous motor connected with the motor controller is controlled to exit from a short-circuit mode by controlling the input values of the pins of the 6 IGBTs, that is, the IGBTs corresponding to the control pins 1 to 6 do not have three upper arm IGBTs corresponding to the pins 1 to 3 in an on state and three lower arm IGBTs corresponding to the pins 4 to 6 in an off state, or the IGBTs corresponding to the control pins 1 to 6 do not have the three upper arm IGBTs corresponding to the pins 1 to 3 in the off-on state and the three lower arm IGBTs corresponding to the pins 4 to 6 in the on state, this ensures that the PMSM is not in the short-circuit mode but enters the torque mode, and can respond to an externally triggered torque request.

It should be noted that, in the present invention, the step S61 and the step S62 are not executed in a sequential order, and the step S61 may be executed first and then the step S62 may be executed, or the step S62 may be executed first and then the step S61 may be executed at the same time, and the present invention is not limited to this order.

The invention provides a vehicle anti-theft method, which is characterized in that when a vehicle is static and in a non-powered-off state and a first trigger event representing that a driver leaves the vehicle occurs to a related component of a driving position of the vehicle, whether the driver is on the driving position or not is detected; and detecting whether a vehicle key is in the vehicle when detecting that a second trigger event which is characterized by the driver leaving the vehicle occurs to a related component of the vehicle driving position; and if the detection result is negative, controlling the permanent magnet synchronous motor in the vehicle to enter a short-circuit mode. When the vehicle is static and is in a non-power-off state, when a driver is detected not to be in a driving position and a vehicle key is not in the vehicle, the permanent magnet synchronous motor in the vehicle is driven in time to enter a short circuit mode, so that the permanent magnet synchronous motor generates a very large resistance moment at a very small motor rotating speed, the vehicle is dragged to be abnormal and difficult, and the purpose of preventing the trailer and the vehicle from being stolen can be achieved.

Based on the same inventive concept, the embodiment of the invention also provides a vehicle anti-theft device, and as the principle of solving the problems of the device is similar to the vehicle anti-theft method, the implementation of the device can refer to the implementation of the method, and repeated parts are not repeated.

As shown in fig. 10, a schematic structural diagram of a vehicle anti-theft device provided in an embodiment of the present invention includes:

the first detection unit 71 is used for detecting whether the driver is at the driving position when a first trigger event which indicates that the driver leaves the vehicle occurs to a related component of the driving position of the vehicle when the vehicle is static and in a non-powered-off state;

the second detection unit 72 is used for detecting whether the vehicle key is in the vehicle or not when detecting that a second trigger event which indicates that the driver leaves the vehicle occurs to the related component of the driving position of the vehicle;

and the control unit 73 is used for controlling the permanent magnet synchronous motor in the vehicle to enter a short-circuit mode if the detection results of the first detection unit 71 and the second detection unit 72 are both negative.

Preferably, the first and second trigger events indicative of the driver leaving the vehicle comprise any one of: the switching of the door of the vehicle, which detects the driving position, from a closed state to an open state, the switching of the seat belt, which detects the driving position, from a fastened state to an unfastened state, and the switching of the brake pedal in the vehicle from a pressed state to an unpressurized state are detected.

Preferably, the second trigger event further comprises: the first preset time is reached after the door of the driver's seat is detected to be switched from the closed state to the open state, or the door of the driver's seat is detected to be switched from the closed state to the open state and then is switched to the closed state.

Preferably, the first detecting unit 71 is specifically configured to determine operating state information of a relevant component of the driving position of the vehicle, where the operating state information includes at least one of: state information of a door of a driver's seat, state information of a seat belt of the driver's seat, and state information of a brake pedal; if the working state information comprises at least two items, judging whether each item of working state information meets a preset detection condition; if at least one item of working state information meets a preset detection condition, determining that the driver is not at the driving position; and if each item of working state information does not meet the preset detection condition, determining that the driver is at the driving position.

Further, the first detecting unit 71 is specifically configured to determine whether the state information of the door of the driving seat satisfies a preset detecting condition according to the following method: judging whether the state information of the vehicle door is in an open state or not; if so, determining that the state information of the vehicle door of the driving position meets a preset detection condition; if not, determining that the state information of the door of the driving position does not meet the preset detection condition.

Further, the first detection unit 71 determines whether the state information of the seat belt of the driving seat satisfies a preset detection condition according to the following method: judging whether the state information of the safety belt is in an unfastening state or not; if so, determining that the state information of the safety belt of the driving seat meets a preset detection condition; if not, determining that the state information of the safety belt of the driving seat does not meet the preset detection condition.

Preferably, the second detection unit 72 is specifically configured to determine a distance between a vehicle key and a vehicle; if the distance is larger than the preset distance threshold value, determining that the vehicle key is not in the vehicle; otherwise, it is determined that the vehicle key is in the vehicle.

Preferably, the first detecting unit 71 is further configured to detect whether the driver is at the driving position when a third triggering event indicating that the driver returns to the vehicle occurs on the related component of the driving position of the vehicle;

the second detection unit 72 is further configured to detect whether a vehicle key is in the vehicle when a fourth trigger event indicating that the driver returns to the vehicle occurs in the related component of the driving position of the vehicle;

the control unit 73 is further configured to control the permanent magnet synchronous motor in the vehicle to exit the short-circuit mode if any one of the detection results of the first detection unit and the second detection unit is yes.

Preferably, the third trigger event and the fourth trigger event include any one of: the control device is characterized in that a vehicle door which detects a driving position is switched from an open state to a closed state, a safety belt which detects the driving position is switched from an unbuckled state to a fastened state, and a brake pedal in the vehicle is switched from an uncompressed state to a compressed state.

Preferably, the fourth trigger event further includes: and the second preset time after the door of the driving position is detected to be switched from the closed state to the open state is reached, or the door of the driving position is detected to be switched from the closed state to the open state and then is switched to the closed state.

For convenience of description, the above parts are separately described as modules (or units) according to functional division. Of course, the functionality of the various modules (or units) may be implemented in the same or in multiple pieces of software or hardware in practicing the invention.

Having described the vehicle theft prevention method, system, and readable medium according to exemplary embodiments of the present invention, a computing device according to another exemplary embodiment of the present invention is next described.

As will be appreciated by one skilled in the art, aspects of the present invention may be embodied as a system, method or program product. Thus, various aspects of the invention may be embodied in the form of: an entirely hardware embodiment, an entirely software embodiment (including firmware, microcode, etc.) or an embodiment combining hardware and software aspects that may all generally be referred to herein as a "circuit," module "or" system.

In some possible embodiments, a computing device according to the present invention may comprise at least one processing unit, and at least one memory unit. Wherein the storage unit stores program code which, when executed by the processing unit, causes the processing unit to perform the steps of the vehicle theft prevention method according to various exemplary embodiments of the present invention described above in this specification. For example, the processing unit may perform a vehicle theft prevention process in steps S11 to S13 as shown in fig. 2.

The computing device 80 according to this embodiment of the invention is described below with reference to fig. 11. The computing device 80 shown in FIG. 11 is only one example and should not impose any limitations on the functionality or scope of use of embodiments of the present invention.

As shown in fig. 11, the computing apparatus 80 is in the form of a general purpose computing device. Components of computing device 80 may include, but are not limited to: the at least one processing unit 81, the at least one memory unit 82, and a bus 83 connecting the various system components (including the memory unit 82 and the processing unit 81).

Bus 83 represents one or more of any of several types of bus structures, including a memory bus or memory controller, a peripheral bus, a processor, or a local bus using any of a variety of bus architectures.

The storage unit 82 may include readable media in the form of volatile memory, such as Random Access Memory (RAM)821 and/or cache memory 822, and may further include Read Only Memory (ROM) 823.

The storage unit 82 may also include a program/utility 825 having a set (at least one) of program modules 824, such program modules 824 including, but not limited to: an operating system, one or more application programs, other program modules, and program data, each of which, or some combination thereof, may comprise an implementation of a network environment.

The computing apparatus 80 may also communicate with one or more external devices 84 (e.g., keyboard, pointing device, etc.), may also communicate with one or more devices that enable a user to interact with the computing apparatus 80, and/or may communicate with any devices (e.g., router, modem, etc.) that enable the computing apparatus 80 to communicate with one or more other computing devices. Such communication may be through input/output (I/O) interfaces 85. Also, computing device 80 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) through network adapter 86. As shown, network adapter 86 communicates with other modules for computing device 80 over bus 83. It should be understood that although not shown in the figures, other hardware and/or software modules may be used in conjunction with computing device 80, 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.

In some possible embodiments, various aspects of the vehicle anti-theft method provided by the present invention may also be implemented in the form of a program product including program code for causing a computer device to perform the steps in the vehicle anti-theft methods according to various exemplary embodiments of the present invention described above in this specification when the program product is run on the computer device, for example, the computer device may perform the vehicle anti-theft procedure in steps S11 to S13 shown in fig. 2.

The program product may employ any combination of one or more readable media. The readable medium may be a readable signal medium or a readable storage medium. A 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 readable storage medium include: an electrical connection having one or more wires, a portable disk, 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.

The program product for the vehicle theft prevention method of the embodiment of the present invention may employ a portable compact disc read only memory (CD-ROM) and include program codes, and may be executed on a computing device. However, the program product of the present invention is not limited in this regard and, in the present document, a 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 readable signal medium may include a propagated data signal with readable program code embodied therein, for example, in baseband or as part of a carrier wave. Such a propagated data signal may take any of a variety of forms, including, but not limited to, electro-magnetic, optical, or any suitable combination thereof. A readable signal medium may also be any readable medium that is not a 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 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.

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, 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 computing device, partly on the user's device, as a stand-alone software package, partly on the user's computing device and partly on a remote computing device, or entirely on the remote computing device or server. In the case of a remote computing device, the remote computing device may be connected to the user computing device over any kind of network, including a Local Area Network (LAN) or a Wide Area Network (WAN), or may be connected to an external computing device (e.g., over the internet using an internet service provider).

It should be noted that although several units or sub-units of the apparatus are mentioned in the above detailed description, such division is merely exemplary and not mandatory. Indeed, the features and functions of two or more of the units described above may be embodied in one unit, according to embodiments of the invention. Conversely, the features and functions of one unit described above may be further divided into embodiments by a plurality of units.

Moreover, while the operations of the method of the invention are depicted in the drawings in a particular order, this does not require or imply that the operations must be performed in this particular order, or that all of the illustrated operations must be performed, to achieve desirable results. Additionally or alternatively, certain steps may be omitted, multiple steps combined into one step execution, and/or one step broken down into multiple step executions.

As will be appreciated by one skilled in the art, embodiments of the present invention may be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.

The present invention is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

While preferred embodiments of the present invention have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all such alterations and modifications as fall within the scope of the invention.

It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.

Claims

1. A vehicle anti-theft method, comprising:

2. The method of claim 1, wherein the first and second trigger events characterizing driver departure from the vehicle comprise any one of: the switching of the door of the vehicle, which detects the driving position, from a closed state to an open state, the switching of the seat belt, which detects the driving position, from a fastened state to an unfastened state, and the switching of the brake pedal in the vehicle from a pressed state to an unpressurized state are detected.

3. The method of claim 1, wherein the second triggering event further comprises: the first preset time is reached after the door of the driver's seat is detected to be switched from the closed state to the open state, or the door of the driver's seat is detected to be switched from the closed state to the open state and then is switched to the closed state.

4. The method of claim 1, wherein detecting whether the driver is in the driving position comprises:

determining operating state information of a component related to a driving position of a vehicle, the operating state information including at least one of: state information of a door of the driver's seat, state information of a seat belt of the driver's seat, state information of a brake switch, and state information of the driver's seat;

if the working state information comprises at least two items, judging whether each item of working state information meets a preset detection condition;

if at least one item of working state information meets a preset detection condition, determining that the driver is not at the driving position;

and if each item of working state information does not meet the preset detection condition, determining that the driver is at the driving position.

5. The method of claim 4, wherein it is determined whether the state information of the door of the driving seat satisfies a preset detection condition according to the following method:

judging whether the state information of the vehicle door is in an open state or not;

if so, determining that the state information of the vehicle door of the driving position meets a preset detection condition;

if not, determining that the state information of the door of the driving position does not meet the preset detection condition.

6. The method of claim 4, wherein it is determined whether the state information of the seat belt of the driver's seat satisfies a preset detection condition according to the following method:

judging whether the state information of the safety belt is in an unfastening state or not;

if so, determining that the state information of the safety belt of the driving seat meets a preset detection condition;

if not, determining that the state information of the safety belt of the driving seat does not meet the preset detection condition.

7. The method of claim 1, wherein detecting whether the vehicle key is on the vehicle specifically comprises:

determining a distance between a vehicle key and a vehicle;

if the distance is larger than the preset distance threshold value, determining that the vehicle key is not in the vehicle; otherwise, it is determined that the vehicle key is in the vehicle.

8. The method of any of claims 1 to 7, further comprising:

detecting whether the driver is on the driving position when detecting that a third trigger event which is characterized by the fact that the driver returns to the vehicle occurs to a related component of the driving position of the vehicle; and

detecting whether a vehicle key is in the vehicle when detecting that a fourth trigger event which is characterized by that a driver returns to the vehicle occurs to a related component of the vehicle driving position;

and if the detection results are yes, controlling the permanent magnet synchronous motor in the vehicle to exit the short-circuit mode.

9. The method of claim 8, wherein the third trigger event and the fourth trigger event comprise any one of: the control device is characterized in that a vehicle door which detects a driving position is switched from an open state to a closed state, a safety belt which detects the driving position is switched from an unbuckled state to a fastened state, and a brake pedal in the vehicle is switched from an uncompressed state to a compressed state.

10. The method of claim 9, wherein the fourth triggering event further comprises: and the second preset time after the door of the driving position is detected to be switched from the closed state to the open state is reached, or the door of the driving position is detected to be switched from the closed state to the open state and then is switched to the closed state.

11. A vehicle theft prevention device, characterized by comprising:

12. The apparatus of claim 11, wherein the first and second trigger events indicative of the driver leaving the vehicle comprise any one of: the switching of the door of the vehicle, which detects the driving position, from a closed state to an open state, the switching of the seat belt, which detects the driving position, from a fastened state to an unfastened state, and the switching of the brake pedal in the vehicle from a pressed state to an unpressurized state are detected.

13. The apparatus of claim 12, wherein the second triggering event further comprises: the first preset time is reached after the door of the driver's seat is detected to be switched from the closed state to the open state, or the door of the driver's seat is detected to be switched from the closed state to the open state and then is switched to the closed state.

14. The apparatus of claim 11,

the first detection unit is specifically configured to determine operating state information of a component related to a driving position of a vehicle, where the operating state information includes at least one of: state information of a door of a driver's seat, state information of a seat belt of the driver's seat, and state information of a brake pedal; if the working state information comprises at least two items, judging whether each item of working state information meets a preset detection condition; if at least one item of working state information meets a preset detection condition, determining that the driver is not at the driving position; and if each item of working state information does not meet the preset detection condition, determining that the driver is at the driving position.

15. The apparatus of claim 14,

the first detection unit is specifically configured to determine whether the state information of the door of the driving seat meets a preset detection condition according to the following method: judging whether the state information of the vehicle door is in an open state or not; if so, determining that the state information of the vehicle door of the driving position meets a preset detection condition; if not, determining that the state information of the door of the driving position does not meet the preset detection condition.

16. The apparatus of claim 15,

the first detection unit is specifically configured to determine whether state information of a seat belt of a driving seat meets a preset detection condition according to the following method: judging whether the state information of the safety belt is in an unfastening state or not; if so, determining that the state information of the safety belt of the driving seat meets a preset detection condition; if not, determining that the state information of the safety belt of the driving seat does not meet the preset detection condition.

17. The apparatus of claim 11,

the second detection unit is specifically used for determining the distance between the vehicle key and the vehicle; if the distance is larger than the preset distance threshold value, determining that the vehicle key is not in the vehicle; otherwise, it is determined that the vehicle key is in the vehicle.

18. The apparatus of any one of claims 11 to 17,

the first detection unit is further used for detecting whether the driver is at the driving position or not when a third trigger event which indicates that the driver returns to the vehicle occurs to the related component of the driving position of the vehicle;

the second detection unit is further used for detecting whether a vehicle key is in the vehicle or not when a fourth trigger event which indicates that the driver returns to the vehicle occurs to the related component of the vehicle driving position;

the control unit is further configured to control the permanent magnet synchronous motor in the vehicle to exit the short-circuit mode if the detection results of the first detection unit and the second detection unit are both yes.

19. The apparatus of claim 18, wherein the third trigger event and the fourth trigger event comprise any one of: the control device is characterized in that a vehicle door which detects a driving position is switched from an open state to a closed state, a safety belt which detects the driving position is switched from an unbuckled state to a fastened state, and a brake pedal in the vehicle is switched from an uncompressed state to a compressed state.

20. The apparatus of claim 19, wherein the fourth triggering event further comprises: and the second preset time after the door of the driving position is detected to be switched from the closed state to the open state is reached, or the door of the driving position is detected to be switched from the closed state to the open state and then is switched to the closed state.

21. A computer-readable medium having stored thereon computer-executable instructions for performing the method of any one of claims 1 to 10.

22. An electric vehicle, comprising:

at least one processor; and

the memory stores instructions executable by the at least one processor to enable the at least one processor to perform the method of any one of claims 1 to 10.