Electronic parking brake control method, arbitration system and system in compliance with functional safety

Abstract

The application discloses a kind of electronic parking control method, arbitration system and system in compliance with functional safety, its method includes the following steps: obtaining pedal judgment signal and GSM gear parking signal;The pedal judgment signal and the GSM gear parking signal are signal arbitration, and parking arbitration result signal is obtained;The parking arbitration result signal is output to EPB parking brake system;Therefore make vehicle satisfy the purpose of functional safety requirement.

Description

Technical Field

[0001] The present invention relates to the field of electronic parking technology, and in particular to an electronic parking control method, arbitration system and system that comply with functional safety. Background Art

[0002] To enhance vehicle styling and reduce costs, most vehicles have eliminated the mechanical hard switch for the electrical parking brake (EPB) and instead utilize a P position switch to trigger the dynamic and static clamping functions. Currently, new energy vehicles typically utilize two control methods to engage and release the parking brake: Method 1: The Gear Shifter Module (GSM): Shifting from a non-P position to P position activates the parking brake, allowing the vehicle to park; shifting from P to a non-P position releases the parking brake, allowing the vehicle to move. Method 2: The In-Vehicle Infotainment (IVI) system: The driver can control the engagement and release of the parking brake via the IVI touchscreen by pressing the IVI touchscreen buttons (Park Engage / Park Release).

[0003] However, IVI does not meet functional safety standards (such as those in GB31590, GB21670, ISO26262, and ASIL B in VDA305), and can abnormally trigger a static release, causing the vehicle to roll. If the IVI function is disabled, the vehicle's parking release and opening functions will not be possible if the GSM shifter fails or if communication between the GSM and EPB fails, significantly affecting the vehicle's functional safety.

[0004] Therefore, in response to the above problems, how to design an electronic parking control solution that meets functional safety requirements to achieve the goal of meeting functional safety requirements for vehicles. Summary of the Invention

[0005] The present invention provides an electronic parking control method, arbitration system and system that comply with functional safety, so as to enable a vehicle to meet functional safety requirements.

[0006] In a first aspect, a functional safety-compliant electronic parking control method is provided, comprising:

[0007] Obtain pedal judgment signal and GSM gear parking signal;

[0008] performing signal arbitration on the pedal judgment signal and the GSM gear parking signal to obtain a parking arbitration result signal;

[0009] outputting the parking arbitration result signal to the EPB parking brake system.

[0010] In a first possible implementation manner of the first aspect, the step of arbitrating the pedal judgment signal and the GSM gear parking signal to obtain a parking arbitration result signal comprises the following steps:

[0011] When the pedal judgment signal is not obtained and the obtained GSM gear parking signal is a parking brake request, the obtained parking arbitration result signal is a parking brake request.

[0012] When the pedal judgment signal is not obtained and the obtained GSM gear parking signal is a parking release request, the obtained parking arbitration result signal is a parking release request.

[0013] In a second possible implementation manner of the first aspect, the step of arbitrating the pedal judgment signal and the GSM gear parking signal to obtain a parking arbitration result signal comprises the following steps:

[0014] When the obtained pedal judgment signal is a parking release request and the GSM gear parking signal is not obtained, it is detected whether the GSM gear shifting module and the module for sending the GSM gear parking signal are faulty.

[0015] When it is detected that neither the GSM gear shifting module nor the module for sending the GSM gear parking signal is faulty, the obtained parking arbitration result signal is a parking release request.

[0016] When it is detected that the GSM gear shifting module or the module for sending the GSM gear parking signal is faulty, the parking arbitration result signal is not outputted.

[0017] In a third possible implementation manner of the first aspect, the step of arbitrating the pedal judgment signal and the GSM gear parking signal to obtain a parking arbitration result signal comprises the following steps:

[0018] When the obtained pedal judgment signal is a parking release request and the obtained GSM gear parking signal is a parking brake request, the parking arbitration result signal is not outputted, and a reminding signal is sent to a user communication terminal or a vehicle-mounted terminal.

[0019] In a fourth possible implementation manner of the first aspect, the step of arbitrating the pedal judgment signal and the GSM gear parking signal to obtain a parking arbitration result signal comprises the following steps:

[0020] When the obtained pedal determination signal is a parking release request and the obtained GSM gear parking signal is a parking release request, obtaining a request duration of the pedal determination signal being a parking release request;

[0021] When it is detected that the request duration is greater than or equal to the first preset time, the obtained parking arbitration result signal is a parking maintenance mode request;

[0022] When it is detected that the request duration is less than the first preset time, the acquired parking arbitration result signal is a parking release request.

[0023] In a second aspect, an arbitration system is also provided, including:

[0024] Signal acquisition module, used to obtain pedal judgment signal and GSM gear parking signal;

[0025] an arbitration module, communicatively connected to the signal acquisition module, for performing signal arbitration on the pedal determination signal and the GSM gear parking signal to obtain a parking arbitration result signal;

[0026] An output module is communicatively connected to the arbitration module and is used to output the parking arbitration result signal to the EPB parking brake system.

[0027] Thirdly, a functionally safe electronic parking control system is also provided, including:

[0028] a pedal determination system for acquiring a brake pedal signal and an accelerator pedal signal, determining a time sequence of acquiring the brake pedal signal and the accelerator pedal signal, and outputting a pedal determination signal;

[0029] The GSM gear judgment system is used to obtain the initial gear signal and the final gear signal sent by the GSM gear shift module, identify the gear change signal, and output the GSM gear parking signal corresponding to the final gear signal;

[0030] The arbitration system is connected to the pedal judgment system and the GSM gear judgment system, and is used to arbitrate the pedal judgment signal and the GSM gear parking signal, and output the parking arbitration result signal to the EPB parking brake system.

[0031] In some embodiments, the pedal determination system is used to:

[0032] When the brake pedal signal and the accelerator pedal signal are detected simultaneously, the pedal determination signal is output as a parking release request;

[0033] When the accelerator pedal signal is detected first, the pedal judgment signal is not output;

[0034] When the brake pedal signal is detected first, the brake pipe pressure signal and the motor torque signal are acquired, and whether to output the pedal judgment signal is determined according to the brake pipe pressure signal and the motor torque signal.

[0035] In some embodiments, the pedal judgment system is further used for,

[0036] When the brake pipe pressure signal is greater than or equal to a preset pressure threshold, the accelerator pedal signal and the motor drive torque signal are acquired, and the signal duration from the acquisition of the accelerator pedal signal to the motor drive torque signal is acquired, when the motor drive torque signal is greater than or equal to a preset torque threshold and the signal duration is less than or equal to a preset time threshold, and based on the driving safety auxiliary signal, the pedal judgment signal is output as a parking release request;

[0037] When the brake pipe pressure signal is less than the preset pressure threshold, the pedal judgment signal is not output;

[0038] When the accelerator pedal signal is not detected, the pedal judgment signal is not output;

[0039] When the motor drive torque signal is less than the preset torque threshold, the pedal judgment signal is not output;

[0040] When the signal duration is greater than the preset time threshold, the pedal judgment signal is not output.

[0041] In some embodiments, the pedal judgment system is further used for,

[0042] The driving safety auxiliary signal includes a driver safety belt fastened signal and a driving vehicle door closed signal;

[0043] When the motor drive torque signal is greater than or equal to the preset torque threshold and the signal duration is less than or equal to the preset time threshold, and the driver safety belt fastened signal and the driving vehicle door closed signal are acquired, the pedal judgment signal is output as a parking release request.

[0044] Compared with the prior art, the advantages of the present application are as follows: the pedal judgment signal is a judgment output signal after the brake pedal signal and the accelerator pedal signal are judged; the present application cancels the IVI release function, and the brake pedal signal BrakePedal_Status and the accelerator pedal signal AccelPedal_Status both meet the requirements of functional safety ASIL B, so the pedal judgment signal can also achieve the functional safety level of ASIL B, and the problem that the parking request issued by the IVI does not meet the functional safety is solved.

[0045] Meanwhile, the application proposes a combination arbitration mode of the pedal judgment signal and the GSM gear position parking signal, so that the EPB parking brake system responds to the arbitration result to complete the parking release, parking start and other parking indication operations, and the multiple signal arbitration judgment can also make the vehicle driving meet the higher functional safety requirement purpose. BRIEF DESCRIPTION OF DRAWINGS

[0046] Figure 1 is a flowchart of an embodiment of the electronic parking control method according to the application;

[0047] Figure 2 is a flowchart of another embodiment of the electronic parking control method according to the application;

[0048] Figure 3 is a flowchart of another embodiment of the electronic parking control method according to the application;

[0049] Figure 4 is a flowchart of another embodiment of the electronic parking control method according to the application;

[0050] Figure 5 is a flowchart of another embodiment of the electronic parking control method according to the application;

[0051] Figure 6 is a flowchart of another embodiment of the electronic parking control method according to the application;

[0052] Figure 7 is a structural diagram of an arbitration system according to the application;

[0053] Figure 8 is a structural diagram of an electronic parking control system according to the application;

[0054] Figure 9 is a flowchart of a pedal judgment system according to the application;

[0055] Figure 10 is a flowchart of a GSM gear position judgment system according to the application. DETAILED DESCRIPTION

[0056] Reference will now be made in detail embodiments of the application, examples of which are illustrated in the accompanying drawings. While the application will be described in conjunction with the specific embodiments, it will be understood that the application is not intended to be limited to the described embodiments. On the contrary, the application is intended to cover alternatives, modifications, and equivalents, which can be included within the spirit and scope of the application as defined by the appended claims. It should be noted that the steps of the method described herein can be implemented by any of the functional blocks or functional arrangements, and any of the functional blocks or functional arrangements can be implemented as physical entities or logical entities, or a combination of both.

[0057] In order for those skilled in the art to better understand the present application, the present application will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0058] Note: The examples to be introduced next are only specific examples, and are not intended to limit the embodiments of the present application to the specific steps, values, conditions, data, sequences, etc. Those skilled in the art can use the concept of the present application to construct more embodiments not mentioned in the present specification by reading the present specification.

[0059] Reference will now be made in detail embodiments of the application, examples of which are illustrated in the accompanying drawings. While the application will be described in conjunction with the specific embodiments, it will be understood that the application is not intended to be limited to the described embodiments. On the contrary, the application is intended to cover alternatives, modifications, and equivalents, which can be included within the spirit and scope of the application as defined by the appended claims. It should be noted that the steps of the method described herein can be implemented by any of the functional blocks or functional arrangements, and any of the functional blocks or functional arrangements can be implemented as physical entities or logical entities, or a combination of both. Figure 1 The embodiments of the present application provide an electronic parking control method meeting functional safety, comprising:

[0060] S100, acquiring a pedal judgment signal and a GSM gear parking signal;

[0061] S200, performing signal arbitration on the pedal judgment signal and the GSM gear parking signal to obtain a parking arbitration result signal;

[0062] S300, outputting the parking arbitration result signal to an EPB parking brake system.

[0063] Specifically, in the present embodiment, the pedal judgment signal is a judgment output signal after judgment on a brake pedal signal and an accelerator pedal signal; the present application cancels the IVI release function, and both the brake pedal signal BrakePedal_Status and the accelerator pedal signal AccelPedal_Status meet the requirements of functional safety ASIL B, so that the pedal judgment signal can also reach the functional safety level of ASIL B, and the problem that the parking request issued by IVI does not meet the functional safety is solved.

[0064] The GSM gear parking signal is a signal corresponding to the gear final signal sent by the GSM gear shifting module; meanwhile, the combination arbitration mode of the pedal judgment signal and the GSM gear parking signal is provided, so that the parking arbitration result signal is output through arbitration, so that the EPB parking brake system responds to the arbitration result to complete the parking release, parking start and other parking indication operations, so that multiple signal arbitration judgments can also make the vehicle driving meet higher functional safety requirements.

[0065] Preferably, in another embodiment of the application, the step of "S200, signal arbitration is performed on the pedal judgment signal and the GSM gear parking signal to obtain a parking arbitration result signal", specifically includes the following steps:

[0066] S210, when the pedal judgment signal is not obtained, and the obtained GSM gear parking signal is a parking brake request, the obtained parking arbitration result signal is a parking brake request;

[0067] S220, when the pedal judgment signal is not obtained, and the obtained GSM gear parking signal is a parking release request, the obtained parking arbitration result signal is a parking release request.

[0068] Specifically, in the embodiment, referring to Figure 2 S210, when the pedal judgment signal is not obtained, and the obtained GSM gear parking signal is a parking brake request (parking start-EPB-Apply), the obtained parking arbitration result signal is a parking brake request (parking start-EPB-Apply); at this time, the EPB responds to the parking brake, controls the rear caliper to complete the clamping action, and realizes vehicle parking.

[0069] Referring to Figure 3 S220, when the pedal judgment signal is not obtained, and the obtained GSM gear parking signal is a parking release request (parking release-EPB-Release), the obtained parking arbitration result signal is a parking release request (parking release-EPB-Release); at this time, the EPB responds to the parking release, controls the rear caliper to complete the release action, and realizes vehicle parking release.

[0070] Preferably, in another embodiment of the application, the step of "S200, signal arbitration is performed on the pedal judgment signal and the GSM gear parking signal to obtain a parking arbitration result signal", specifically includes the following steps:

[0071] S230, when the obtained pedal judgment signal is a parking release request, and the GSM gear parking signal is not obtained, it is detected whether the GSM gear shifting module and the module sending the GSM gear parking signal are faulty.

[0072] S231, when detecting that the GSM gear module and the module sending the GSM gear parking signal are both not malfunctioning, the obtained parking arbitration result signal is a parking release request;

[0073] S232, when detecting that the GSM gear module or the module sending the GSM gear parking signal is malfunctioning, no parking arbitration result signal is output.

[0074] Specifically, in the embodiment, as shown in Figure 4 the pedal judgment signal is a parking release request (EPB-Release), and the GSM gear parking signal is not obtained. The parking arbitration result signal after arbitration is a parking release request (EPB-Release), and if the module sending the GSM gear parking signal (this module is a GSM gear judgment system) or the GSM gear module is malfunctioning, no parking release request is output.

[0075] It should be noted that the GSM gear module is used to send corresponding gear initial signals and gear final signals according to user gear operation.

[0076] Preferably, in another embodiment of the application, the step of “S200, signal arbitration is performed on the pedal judgment signal and the GSM gear parking signal to obtain a parking arbitration result signal” specifically includes the following steps:

[0077] S240, when the obtained pedal judgment signal is a parking release request and the obtained GSM gear parking signal is a parking brake request, no parking arbitration result signal is output, and a reminder signal is sent to a user communication terminal or a vehicle terminal.

[0078] Specifically, in the embodiment, as shown in Figure 5 the pedal judgment signal is a parking release request (EPB-Release), and the GSM gear parking signal is a parking brake request (EPB-Apply). After arbitration, neither a parking release request EPB-Release nor a parking opening request EPB-Apply is sent, and a driver reminder information “please confirm the required parking function” is sent to an HMI (In-Vehicle Infotainment).

[0079] Since the current EPB adopts an electronic parking mechanism, when replacing the friction plate of the new energy vehicle, the motor piston of the rear brake caliper needs to be returned to the bottom. This maintenance mode needs to use a special software writing tool, similar to a canoe, to enter the maintenance mode and replace the friction plate. However, the cost of the special equipment is high, and the use scene is limited, and it must be in a professional maintenance place.

[0080] Therefore, in order to solve the above problems, the driver needs to step on the brake pedal and the accelerator pedal at the same time to release the parking; combined with the shifting action of GSM, the maintenance mode of the friction plate is entered, so that the friction plate maintenance mode can be performed without the help of professional equipment. Specifically as follows:

[0081] Preferably, in another embodiment of the present application, the step of "S200, signal arbitration is performed on the pedal judgment signal and the GSM gear parking signal to obtain a parking arbitration result signal" comprises the following steps:

[0082] S250, when the obtained pedal judgment signal is a parking release request and the obtained GSM gear parking signal is a parking release request, the request duration of the pedal judgment signal being a parking release request is obtained;

[0083] S251, when it is detected that the request duration is greater than or equal to a first preset time, the obtained parking arbitration result signal is a parking maintenance mode request;

[0084] S252, when it is detected that the request duration is less than the first preset time, the obtained parking arbitration result signal is a parking release request.

[0085] Specifically, in the present embodiment, referring to Figure 6 when the obtained pedal judgment signal is a parking release request and the obtained GSM gear parking signal is a parking release request, the request duration of the parking release request is judged;

[0086] If the request duration T≥T0 (which can be calibrated to 30S), it means that the driver intentionally stops (steps on the brake pedal and the accelerator pedal at the same time) for a long time, and after arbitration, the parking maintenance mode request "EPB-COMPLETELY RELEASED" is sent. After the caliper receives the instruction, the piston will be completely returned (and more normal parking release is returned). At this time, the EPB enters the maintenance mode, and the replacement of the friction plate can be performed.

[0087] If the request duration T<T1 (which can be calibrated to 10S) sends the parking release request "EPB-RELEASED", the vehicle completes the release of the parking.

[0088] At the same time, refer toFigure 7 The application also provides an arbitration system, which comprises:

[0089] a signal acquisition module, configured to acquire a pedal judgment signal and a GSM gear parking signal;

[0090] an arbitration module, in communication connection with the signal acquisition module, configured to perform signal arbitration on the pedal judgment signal and the GSM gear parking signal, and acquire a parking arbitration result signal;

[0091] an output module, in communication connection with the arbitration module, configured to output the parking arbitration result signal to an EPB parking brake system.

[0092] Specifically, the embodiment corresponds to the above-mentioned method embodiment one by one, and the functions of each module have been described in detail in the corresponding method embodiment, thus will not be described one by one.

[0093] Meanwhile, referring to Figure 8 The application also provides an electronic parking control system meeting functional safety, which comprises:

[0094] a pedal judgment system, configured to acquire a brake pedal signal and an accelerator pedal signal, and judge the acquisition time sequence of the brake pedal signal and the accelerator pedal signal, and output a pedal judgment signal;

[0095] a GSM gear judgment system, configured to acquire a gear initial signal and a gear final signal sent by a GSM gear module, and identify a gear change signal and output a GSM gear parking signal corresponding to the gear final signal;

[0096] an arbitration system as described above, in communication connection with the pedal judgment system and the GSM gear judgment system, configured to perform signal arbitration on the pedal judgment signal and the GSM gear parking signal, and output the parking arbitration result signal to an EPB parking brake system.

[0097] Therefore, the application adds a judgment measure: the driver needs to step on the brake pedal and the accelerator pedal at the same time, and the parking can be released; meanwhile, the IVI screen release function is cancelled, and when the GSM fails, the newly added judgment measure is used to release the parking brake.

[0098] Meanwhile, in combination with the gear shifting action of the GSM, the friction plate enters the maintenance mode. The friction plate maintenance mode can be performed without the aid of professional equipment.

[0099] Preferably, in another embodiment of the application, the pedal judgment system is configured to,

[0100] when the brake pedal signal and the accelerator pedal signal are detected at the same time, the pedal judgment signal is output as a parking release request;

[0101] When the accelerator pedal signal is detected first, the pedal judgment signal is not outputted.

[0102] When the brake pedal signal is detected first, the brake pipe pressure signal and the motor torque signal are acquired, and whether to output the pedal judgment signal is judged according to the brake pipe pressure signal and the motor torque signal.

[0103] Preferably, in another embodiment of the present application, the pedal judgment system is further used for,

[0104] When the brake pedal signal is detected first, and the brake pipe pressure signal is greater than or equal to a preset pressure threshold, the accelerator pedal signal and the motor driving torque signal are acquired, and the signal duration from the accelerator pedal signal to the motor driving torque signal is acquired, when the motor driving torque signal is detected to be greater than or equal to a preset torque threshold, and the signal duration is less than or equal to a preset time threshold, and based on the driving safety auxiliary signal, the pedal judgment signal is outputted as a parking release request.

[0105] When the brake pipe pressure signal is detected to be less than a preset pressure threshold, the pedal judgment signal is not outputted.

[0106] When the accelerator pedal signal is not detected, the pedal judgment signal is not outputted.

[0107] When the motor driving torque signal is detected to be less than a preset torque threshold, the pedal judgment signal is not outputted.

[0108] When the signal duration is detected to be greater than a preset time threshold, the pedal judgment signal is not outputted.

[0109] Preferably, in another embodiment of the present application, the pedal judgment system is further used for,

[0110] The driving safety auxiliary signal includes a driver safety belt has been buckled signal and a driving vehicle door closed signal.

[0111] When the motor driving torque signal is detected to be greater than or equal to a preset torque threshold, and the signal duration is less than or equal to a preset time threshold, and the driver safety belt has been buckled signal and the driving vehicle door closed signal are acquired, the pedal judgment signal is outputted as a parking release request.

[0112] Specifically, in the present embodiment, referring to Figure 9 simultaneously, the pedal judgment system (module one in the figure) judges by receiving and judging the request of the brake pedal and the accelerator pedal, and sends the pedal judgment signal to the arbitration system (module three).

[0113] BrakePedal_Status, 0x0: not_Pressed 0x1:Pressed

[0114] AccelPedal_Status: 0x0: not_Pressed 0x1:Pressed.

[0115] Meanwhile, the first module can receive a brake pipe pressure signal P and a motor torque signal Y on a can line.

[0116] Meanwhile, referring to Figure 10 As shown in the figure, the GSM gear judging system (module two in the figure) sends a parking opening or parking release request to the arbitration system (module three) by identifying the gear change signal sent by the GSM.

[0117] Based on the same inventive concept, the embodiments of the present application also provide a computer readable storage medium, which stores a computer program, and the computer program is executed by a processor to implement all or part of the method steps of the above method.

[0118] The computer program can be stored in a computer readable storage medium, and the computer program is executed by the processor to implement the steps of the above method embodiments. The computer program includes computer program code, which can be in the form of source code, object code, executable file or some intermediate form. The computer readable medium can include any entity or device capable of carrying the computer program code, recording medium, U disk, mobile hard disk, magnetic disk, optical disk, computer memory, read-only memory (ROM), random access memory (RAM), electrical carrier signal, telecommunication signal and software distribution medium, etc. It should be noted that the content of the computer readable medium can be appropriately increased or decreased according to the requirements of legislation and patent practice in the jurisdiction, for example, in some jurisdictions, according to the legislation and patent practice, the computer readable medium does not include electrical carrier signals and telecommunication signals.

[0119] Based on the same inventive concept, the embodiments of the present application also provide an electronic device, which includes a memory and a processor, and the memory stores a computer program running on the processor, and the processor executes the computer program to implement all or part of the method steps of the above method.

[0120] The processor can be a central processing unit (CPU), and can also be other general-purpose processors, digital signal processors (DSP), application-specific integrated circuits (ASIC), field-programmable gate arrays (FPGA) or other programmable logic devices, discrete gates or transistor logic components, discrete hardware components, etc. The general-purpose processor can be a microprocessor or the processor can also be any conventional processor. The processor is the control center of the computer device, and connects all parts of the computer device through various interfaces and lines.

[0121] The memory can be used to store computer programs and / or modules, and the processor can realize various functions of the computer device by running or executing the computer programs and / or modules stored in the memory, and calling data stored in the memory. The memory can mainly include a program storage area and a data storage area, wherein the program storage area can store an operating system and at least one application program required by a function (such as a sound playing function, an image playing function, etc.); and the data storage area can store data created according to the use of the mobile phone (such as audio data, video data, etc.). In addition, the memory can include a high-speed random access memory, and can also include a non-volatile memory, such as a hard disk, a memory, a plug-in hard disk, a smart media card (SMC), a secure digital (SD) card, a flash card, at least one disk storage device, a flash memory device, or other volatile solid-state memory devices.

[0122] Those skilled in the art should understand that the embodiments of the present application can be provided as a method, a system, a server or a computer program product. Therefore, the present application can adopt a completely hardware embodiment, a completely software embodiment, or an embodiment combining software and hardware aspects. Moreover, the present application can adopt the form of a computer program product implemented on one or more computer usable storage media (including but not limited to disk storage and optical storage, etc.) containing computer usable program codes.

[0123] The present application is described in reference to the appended drawings figures and / or block diagrams of methods, apparatus (systems), servers, and computer program products according to embodiments of the application. It will be understood that each block of the flowchart and / or block diagrams, and combinations of blocks in the flowchart and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can 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 and / or block diagram block or blocks. Figure 1 one or more flowcharts and / or blocks Figure 1 one or more blocks

[0124] These computer program instructions can 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 instructions which implement the function specified in the flowchart and / or block diagram block or blocks. Figure 1 one or more flowcharts and / or blocks Figure 1 one or more blocks

[0125] The computer program instructions can 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 and / or block diagram block or blocks. Figure 1 one or more flowcharts and / or blocks Figure 1 one or more blocks

[0126] Obviously, numerous modifications and variations of the present application are possible in light of the above teachings. It is therefore to be understood that within the scope of the appended claims and their equivalents, the application can be practiced otherwise than as specifically described.

Claims

1. A functional safety electronic parking control method, characterized in that: include: Obtain pedal judgment signal and GSM gear parking signal; performing signal arbitration on the pedal judgment signal and the GSM gear parking signal to obtain a parking arbitration result signal; Outputting the parking arbitration result signal to the EPB parking brake system; Acquiring a pedal determination signal includes: acquiring a brake pedal signal and an accelerator pedal signal, determining a time sequence of acquiring the brake pedal signal and the accelerator pedal signal, and outputting a pedal determination signal; When the brake pedal signal and the accelerator pedal signal are detected simultaneously, the pedal determination signal is output as a parking release request; When the accelerator pedal signal is detected first, the pedal judgment signal is not output; When the brake pedal signal is first detected and the brake line pressure signal is greater than or equal to a preset pressure threshold, an accelerator pedal signal and a motor drive torque signal are obtained, and a signal duration from obtaining the accelerator pedal signal to obtaining the motor drive torque signal is obtained; when it is detected that the motor drive torque signal is greater than or equal to a preset torque threshold and the signal duration is less than or equal to a preset time threshold, the pedal determination signal is output as a parking release request based on the driving safety auxiliary signal; When it is detected that the brake line pressure signal is less than a preset pressure threshold, the pedal judgment signal is not output; When the accelerator pedal signal is not detected, the pedal judgment signal is not output; When it is detected that the motor driving torque signal is less than a preset torque threshold, the pedal determination signal is not output; When it is detected that the signal duration is greater than a preset time threshold, the pedal determination signal is not output.

2. The electronic parking control method according to claim 1, wherein: The step of "performing signal arbitration on the pedal judgment signal and the GSM gear parking signal to obtain a parking arbitration result signal" specifically includes the following steps: When the pedal determination signal is not obtained and the obtained GSM gear parking signal is a parking brake request, the obtained parking arbitration result signal is a parking brake request; When the pedal determination signal is not obtained, and the obtained GSM gear parking signal is a parking release request, the obtained parking arbitration result signal is a parking release request.

3. The functional safety electronic parking control method according to claim 1, characterized in that: The step of "performing signal arbitration on the pedal judgment signal and the GSM gear parking signal to obtain a parking arbitration result signal" specifically includes the following steps: When the obtained pedal judgment signal is a parking release request and the GSM gear parking signal is not obtained, detecting whether a GSM shift module and a module sending the GSM gear parking signal are faulty; When it is detected that neither the GSM shift module nor the module sending the GSM gear parking signal has any fault, the obtained parking arbitration result signal is a parking release request; When a fault is detected in the GSM shift module or the module sending the GSM gear parking signal, no parking arbitration result signal is output.

4. The electronic parking control method according to claim 1, wherein: The step of "performing signal arbitration on the pedal judgment signal and the GSM gear parking signal to obtain a parking arbitration result signal" specifically includes the following steps: When the obtained pedal judgment signal is a parking release request and the obtained GSM gear parking signal is a parking brake request, no parking arbitration result signal is output, and a reminder signal is sent to the user communication terminal or the vehicle terminal.

5. The electronic parking control method according to claim 1, wherein: The step of "performing signal arbitration on the pedal judgment signal and the GSM gear parking signal to obtain a parking arbitration result signal" specifically includes the following steps: When the obtained pedal determination signal is a parking release request and the obtained GSM gear parking signal is a parking release request, obtaining a request duration for the pedal determination signal to be a parking release request; When it is detected that the request duration is greater than or equal to the first preset time, the obtained parking arbitration result signal is a parking maintenance mode request; When it is detected that the request duration is less than the first preset time, the acquired parking arbitration result signal is a parking release request.

6. An arbitration system for implementing the functional safety electronic parking control method according to any one of claims 1 to 5, characterized in that: include: Signal acquisition module, used to obtain pedal judgment signal and GSM gear parking signal; an arbitration module, communicatively connected to the signal acquisition module, for performing signal arbitration on the pedal determination signal and the GSM gear parking signal to obtain a parking arbitration result signal; An output module is communicatively connected to the arbitration module and is used to output the parking arbitration result signal to the EPB parking brake system.

7. An electronic parking control system that complies with functional safety, characterized in that: include: a pedal determination system for acquiring a brake pedal signal and an accelerator pedal signal, determining a time sequence of acquiring the brake pedal signal and the accelerator pedal signal, and outputting a pedal determination signal; The GSM gear judgment system is used to obtain the initial gear signal and the final gear signal sent by the GSM gear shift module, identify the gear change signal, and output the GSM gear parking signal corresponding to the final gear signal; The arbitration system according to claim 6 is communicatively connected to the pedal judgment system and the GSM gear judgment system, and is used to perform signal arbitration between the pedal judgment signal and the GSM gear parking signal, and output the parking arbitration result signal to the EPB parking brake system.

8. The functionally safe electronic parking control system according to claim 7, characterized in that: The pedal judgment system is used to: When the brake pedal signal and the accelerator pedal signal are detected simultaneously, the pedal determination signal is output as a parking release request; When the accelerator pedal signal is detected first, the pedal judgment signal is not output; When the brake pedal signal is detected first, a brake line pressure signal and a motor torque signal are acquired, and whether to output the pedal determination signal is determined according to the brake line pressure signal and the motor torque signal.

9. The functionally safe electronic parking control system according to claim 8, characterized in that: The pedal judgment system is also used to: When the brake pedal signal is first detected and the brake line pressure signal is greater than or equal to a preset pressure threshold, an accelerator pedal signal and a motor drive torque signal are obtained, and a signal duration from obtaining the accelerator pedal signal to obtaining the motor drive torque signal is obtained; when it is detected that the motor drive torque signal is greater than or equal to a preset torque threshold and the signal duration is less than or equal to a preset time threshold, the pedal determination signal is output as a parking release request based on the driving safety auxiliary signal; When it is detected that the brake line pressure signal is less than a preset pressure threshold, the pedal judgment signal is not output; When the accelerator pedal signal is not detected, the pedal judgment signal is not output; When it is detected that the motor driving torque signal is less than a preset torque threshold, the pedal determination signal is not output; When it is detected that the signal duration is greater than a preset time threshold, the pedal determination signal is not output.

10. The functionally safe electronic parking control system according to claim 9, characterized in that: The pedal judgment system is also used to: The driving safety auxiliary signal includes: a driver's seat belt fastened signal and a driver's door closed signal; When it is detected that the motor drive torque signal is greater than or equal to a preset torque threshold, and the signal duration is less than or equal to a preset time threshold, and a driver's seat belt fastened signal and a driver's door closed signal are obtained, the pedal judgment signal is output as a parking release request.

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