CN117002460A

CN117002460A - Electronic parking control system, method, device, equipment and storage medium

Info

Publication number: CN117002460A
Application number: CN202310970484.1A
Authority: CN
Inventors: 刘振涛; 孔权; 翟钧; 陈东
Original assignee: Deep Blue Automotive Technology Co ltd
Current assignee: Deep Blue Automotive Technology Co ltd
Priority date: 2023-08-02
Filing date: 2023-08-02
Publication date: 2023-11-07

Abstract

The application relates to an electronic parking control system, an electronic parking control method, an electronic parking control device, electronic parking control equipment and a storage medium, and relates to the technical field of electronic parking. The system comprises: the first control module is connected with a parking switch signal source; the second control module is connected with a parking switch signal source; the first control module is connected with a driving parameter signal source through a first CAN bus; the second control module is connected with a driving parameter signal source through a second CAN bus; the first power supply is connected with the first control module; the second power supply is connected with the second control module; the left caliper executing module is respectively connected with the first control module and the second control module; the right caliper executing module is respectively connected with the first control module and the second control module. Therefore, the functional security level can be decomposed, and the security level required by the chip can be reduced.

Description

Electronic parking control system, method, device, equipment and storage medium

Technical Field

The application relates to the technical field of electronic parking, in particular to the technical field of electronic parking control of pure electric vehicles, and specifically relates to an electronic parking control system, an electronic parking control method, an electronic parking control device, electronic parking equipment and a storage medium.

Background

The national standard GB21670 specifies that a vehicle equipped with an electronic parking function (electric parking brake, EPB) can still perform a parking brake from the driving position and keep a full-load vehicle stationary on 8% of the uphill and downhill slopes when the external circuit of the electronic control unit, except the power supply circuit, inside the electronic control transmission is damaged or the control device fails.

Based on the regulation requirement, a scheme of redundant control of motors and calipers at two sides by a double micro control unit (microcontroller unit, MCU) is generally adopted in the industry, and the double redundant EPB can replace a P-gear locking mechanism, so that the cost is reduced.

However, in a general dual-MCU redundancy control EPB architecture, for example, a main MCU and an auxiliary MCU control two side calipers simultaneously, or one side MCU follows a scheme of controlling the other side MCU, in order to meet a high-level Security Goal (SG) of the EPB, the functional security level of the MCU control chip is higher, which tends to increase hardware cost and software development amount, and is unfavorable for industry development.

Disclosure of Invention

The application provides an electronic parking control system, an electronic parking control method, an electronic parking control device, and a storage medium, which at least solve the technical problem that the function security level of a control chip is higher in order to meet the high-level security target of EPB in the related technology. The technical scheme of the application is as follows:

according to a first aspect to which the present application relates, there is provided an electronic parking control system including: the parking switch signal source, the driving parameter signal source, the first control path and the second control path; the first control path includes: the first control module, the first power supply and the left caliper executing module; the second control path includes: the second control module, the second power supply and the right caliper executing module; the first control module is connected with a parking switch signal source and used for acquiring the parking state of the vehicle; the second control module is connected with a parking switch signal source and used for obtaining a parking state in a redundancy way; the first control module is connected with a driving parameter signal source through a first CAN bus and is used for acquiring driving parameters of the vehicle; the second control module is connected with a driving parameter signal source through a second CAN bus and is used for obtaining driving parameters in a redundancy way; the first power supply is connected with the first control module and is used for supplying power to the first control module; the second power supply is connected with the second control module and is used for supplying power to the second control module; the left caliper executing module is respectively connected with the first control module and the second control module and is used for braking the left wheel of the vehicle; the right caliper executing module is connected with the first control module and the second control module respectively and used for braking the right wheel of the vehicle.

According to the technical means, the first control path and the second control path are relatively independent, and the common cause failure does not exist in the two paths of control, so that the requirements of regulations and functional safety can be met. Meanwhile, the left caliper executing module and the right caliper executing module can both receive parking requests from the first control module and the second control module so as to perform logical AND operation on the two parking requests, so that the functional safety level can be decomposed, and the safety level required by a chip is reduced.

In one possible embodiment, the parking state includes: the start state or the release state of a P gear or an EPB switch of the vehicle; the parking switch signal source includes: a first switch, a second switch, a third switch and a fourth switch; the first switch is used for collecting the starting state of a P gear or EPB switch of the vehicle; the second switch is used for redundantly collecting the starting state of the P gear or the EPB switch of the vehicle; the third switch is used for collecting the release state of the P gear or EPB switch of the vehicle; the fourth switch is used for redundantly collecting the release state of the P gear or EPB switch of the vehicle; the first switch and the third switch are connected with the first control module; the second switch and the fourth switch are connected with the second control module.

According to the technical means, the parking state acquisition circuits corresponding to the first control path and the second control path can be mutually independent through the 4-path switch, the parking state acquisition circuits can be prevented from becoming common-cause failure points, the requirement on independence in functional safety level decomposition is met, the high-level safety target is met, and the functional safety level of the control chip can be reduced.

In one possible embodiment, the first power source and the second power source are connected through a circuit breaker; when the first control path or the second control path fails, the circuit breaker opens.

According to the technical means, the first power supply and the second power supply can be mutually independent through the circuit breaker, the power supply can be prevented from becoming a common cause failure point, the requirement on independence in functional safety level decomposition is met, the high-level safety target is met, and the functional safety level of the control chip can be reduced.

In one possible embodiment, the left caliper performing module includes: a first pre-drive chip and a left caliper motor; the first pre-driving chip is connected with the left caliper motor through an H bridge; the right caliper performing module includes: the second pre-driving chip and the right caliper motor; the second pre-driving chip is connected with the right caliper motor through an H bridge; the first power supply is connected with the first pre-driving chip and is used for supplying power to the first pre-driving chip; the second power supply is connected with the second pre-driving chip and is used for supplying power to the second pre-driving chip.

According to the technical means, the application provides a specific structure of the two-side caliper executing module, so that the two-side caliper executing module can realize the function of braking two-side wheels of a vehicle.

In one possible embodiment, the driving parameter signal source includes: the system comprises a vehicle speed acquisition module and/or a motor rotating speed acquisition module; the vehicle speed acquisition module is used for acquiring the running speed of the vehicle; the motor rotation speed acquisition module is used for acquiring the motor rotation speed of the vehicle.

According to the technical means, the running speed and/or the motor rotating speed can be obtained, so that the running state of the vehicle can be accurately judged, and the accuracy of executing the vehicle control is improved.

According to a second aspect of the present application, there is provided an electronic parking control method including: acquiring a parking state of a vehicle and driving parameters of the vehicle; when the acquired parking state and driving parameters meet preset parking conditions, a first parking request is generated; redundant acquisition of parking states of vehicles and driving parameters of the vehicles; generating a second parking request when the parking state and the driving parameters obtained in a redundant mode meet the parking conditions; braking a left wheel of the vehicle in response to the first parking request and the second parking request; in response to the first and second park requests, a right-hand wheel of the vehicle is braked.

According to the technical means, the method and the device can generate two mutually independent parking requests based on the parking state and the driving parameters respectively, and perform logical AND operation on the two parking requests, so that the decomposition of the functional safety level can be realized, and the safety level required by a chip is reduced.

In one possible embodiment, the parking condition includes: the parking state is the starting state of a P gear or EPB switch of the vehicle, and the driving parameter is smaller than a preset parking threshold value; the method for acquiring the parking state of the vehicle and the driving parameters of the vehicle comprises the following steps: acquiring a parking state; and when the parking state is the P gear of the vehicle or the starting state of the EPB switch, acquiring the driving parameters.

According to the technical means, the parking intention of the driver of the vehicle can be identified through the parking state, and then the driving parameters of the vehicle are obtained. The application CAN reduce invalid transmission of signals of driving parameters in the CAN bus.

In one possible embodiment, the driving parameters include: the running speed of the vehicle and/or the motor speed of the vehicle; when the driving parameters include the driving speed and the motor rotation speed, the method further comprises the following steps: and comparing and checking the motor rotating speed and the running speed.

According to the technical means, the motor speed and the running speed can be compared and checked to accurately judge the running state of the vehicle, and the accuracy of executing the vehicle control is improved.

According to a third aspect of the present application, there is provided an electronic parking control apparatus including a first acquisition unit, a first generation unit, a second acquisition unit, a second generation unit, a first execution unit, and a second execution unit; the first acquisition unit is used for acquiring the parking state of the vehicle and the driving parameters of the vehicle; the first generation unit is used for generating a first parking request when the acquired parking state and driving parameters meet preset parking conditions; the second acquisition unit is used for redundantly acquiring the parking state of the vehicle and the driving parameters of the vehicle; the second generation unit is used for generating a second parking request when the parking state and the driving parameters obtained in a redundant mode meet the parking conditions; a first execution unit for braking a left wheel of the vehicle in response to the first parking request and the second parking request; and the second execution unit is used for responding to the first parking request and the second parking request and braking the right wheel of the vehicle.

In one possible embodiment, the parking condition includes: the parking state is the starting state of a P gear or EPB switch of the vehicle, and the driving parameter is smaller than a preset parking threshold value; the first acquisition unit/the second acquisition unit is specifically configured to: acquiring a parking state; and when the parking state is the P gear of the vehicle or the starting state of the EPB switch, acquiring the driving parameters.

In one possible embodiment, the driving parameters include: the running speed of the vehicle and/or the motor speed of the vehicle; when the driving parameters include a driving speed and a motor rotation speed, the device further comprises: a first check unit/a second check unit; the first checking unit/the second checking unit is used for comparing and checking the motor rotating speed and the driving speed.

According to a fourth aspect of the present application, there is provided an electronic device, comprising: a processor; a memory for storing processor-executable instructions; wherein the processor is configured to execute instructions to implement the method of the second aspect described above and any one of its possible embodiments.

According to a fifth aspect of the present application there is provided a computer readable storage medium, which when executed by a processor of an electronic device, enables the electronic device to perform the method of the second aspect and any one of its possible embodiments.

According to a sixth aspect of the present application there is provided a computer program product comprising computer instructions which, when run on an electronic device, cause the electronic device to perform the method of the second aspect and any one of its possible embodiments.

Therefore, the technical characteristics of the application have the following beneficial effects:

(1) According to the application, the first control path and the second control path are relatively independent, and the common cause failure does not exist in the two paths of control, so that the requirements of regulations and functional safety can be met. Meanwhile, the left caliper executing module and the right caliper executing module can both receive parking requests from the first control module and the second control module so as to perform logical AND operation on the two parking requests, so that the functional safety level can be decomposed, and the safety level required by a chip is reduced.

(2) According to the application, the parking state acquisition circuits corresponding to the first control path and the second control path can be mutually independent through the 4-path switch, so that the parking state acquisition circuits can be prevented from becoming common cause failure points, the requirement on independence in functional safety level decomposition is met, the high-level safety target is met, and the functional safety level of the control chip can be reduced.

(3) The application can realize that the first power supply and the second power supply are mutually independent through the circuit breaker, can avoid the power supply to become a common cause failure point, meets the requirement on independence in the function safety level decomposition, meets the high-level safety target, and can reduce the function safety level of the control chip.

(4) The application provides a specific structure of a two-side caliper executing module, so that the two-side caliper executing module can realize the function of braking two-side wheels of a vehicle.

(5) The application can acquire the running speed and/or the motor rotating speed so as to realize accurate judgment of the running state of the vehicle and improve the accuracy of executing the vehicle control.

(6) According to the application, two mutually independent parking requests can be generated based on the parking state and the driving parameters respectively, and logic AND operation is carried out on the two parking requests, so that the decomposition of functional safety level can be realized, and the safety level required by a chip is reduced.

(7) According to the method and the device, after the parking intention of the driver of the vehicle is identified through the parking state, the driving parameters of the vehicle are acquired. The application CAN reduce invalid transmission of signals of driving parameters in the CAN bus.

(8) The application can realize accurate judgment of the running state of the vehicle by comparing and checking the rotating speed and the running speed of the motor, and improves the accuracy of executing the vehicle control.

It should be noted that, technical effects caused by any implementation manner of the third aspect to the sixth aspect may refer to technical effects caused by corresponding implementation manners of the first aspect and the second aspect, which are not described herein.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the application as claimed.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the application and together with the description, serve to explain the principles of the application and do not constitute a undue limitation on the application.

FIG. 1 is a schematic diagram of an electronic park control system, according to an exemplary embodiment;

FIG. 2 is a schematic diagram of a park condition acquisition circuit, according to an exemplary embodiment;

FIG. 3 is a flowchart illustrating a method of electronic park control, according to an exemplary embodiment;

FIG. 4 is a flowchart illustrating yet another electronic park control method, according to an exemplary embodiment;

fig. 5 is a block diagram of an electronic parking control apparatus according to an exemplary embodiment;

fig. 6 is a block diagram of an electronic device, according to an example embodiment.

Detailed Description

In order to enable a person skilled in the art to better understand the technical solutions of the present application, the technical solutions of the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings.

It should be noted that the terms "first," "second," and the like in the description and the claims of the present application and the above figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate such that the embodiments of the application described herein may be implemented in sequences other than those illustrated or otherwise described herein. The implementations described in the following exemplary examples do not represent all implementations consistent with the application. Rather, they are merely examples of apparatus and methods consistent with aspects of the application as detailed in the accompanying claims.

For easy understanding, the electronic parking control system provided by the application is specifically described below with reference to the accompanying drawings.

Fig. 1 is a schematic diagram of an electronic parking control system according to an exemplary embodiment, as shown in fig. 1, including: a parking switch signal source 01, a driving parameter signal source 02, a first control path 03 and a second control path 04.

The first control path 03 includes: a first control module 05, a first power supply 06 and a left caliper performing module 07.

The first control module 05 is connected with a parking switch signal source 01 and is used for acquiring the parking state of the vehicle.

The first control module 05 is connected to the driving parameter signal source 02 via a first controller area network (controller area network, CAN) bus 08 for acquiring driving parameters of the vehicle.

The first power source 06 is connected to the first control module 05 and is configured to supply power to the first control module 05.

The second control path 04 includes: a second control module 09, a second power supply 10 and a right caliper performing module 11.

The second control module 09 is connected with the parking switch signal source 01 and is used for obtaining the parking state redundantly.

The second control module 09 is connected with the driving parameter signal source 02 through the second CAN bus 12 and is used for obtaining the driving parameters in a redundancy way.

The second power supply 10 is connected to the second control module 09 for supplying power to the second control module 09.

The left caliper performing module 07 is connected to the first control module 05 and the second control module 09, respectively, and is used for braking the left wheel of the vehicle.

The right caliper executing module 11 is connected to the first control module 05 and the second control module 09, respectively, and is used for braking the right wheel of the vehicle.

In an alternative embodiment, the left caliper performing module 07 is integrally arranged at the left wheel brake disc, and may include: a first pre-drive chip 13 and a left caliper motor 14. The first pre-drive chip 13 is connected with the left caliper motor 14 through an H-bridge 15. The first power supply 06 is connected to the first pre-driving chip 13 and is used for supplying power to the first pre-driving chip 13. The first pre-driving chip 13 is respectively connected with the first control module 05 and the second control module 09.

Accordingly, the right caliper performing module 11 is integrally disposed at the right wheel brake disc, and may include: a second pre-drive chip 16 and a right caliper motor 17. The second pre-drive chip 16 is connected with the right caliper motor 17 through an H-bridge 18. The second power supply 10 is connected to the second pre-driving chip 16 for supplying power to the second pre-driving chip 16. The second pre-driving chip 16 is respectively connected with the first control module 05 and the second control module 09.

In an alternative embodiment, the park state may include a P (park) gear of the vehicle or an activated (release) state of an electronic park brake system (electrical park brake, EPB) switch.

The starting state and the releasing state can be provided with 2 switches, wherein one switch in the starting state and one switch in the releasing state are collected by the first control module 05, and the other switch in the starting state and the other switch in the releasing state are collected by the second control module 09.

As shown in fig. 2, the parking switch signal source 01 may include: a first switch 19, a second switch 20, a third switch 21 and a fourth switch 22. The first switch 19 and the third switch 21 are connected with the first control module 05 to form a path of parking state acquisition circuit. The second switch 20 and the fourth switch 22 are connected with the second control module 09 to form another path of parking state acquisition circuit.

The first switch 19 is used for acquiring the starting state of a P gear or EPB switch of the vehicle. The second switch 20 is used to redundantly collect the start state of the P-range or EPB switch of the vehicle. The third switch 21 is used to collect the released state of the P-range or EPB switch of the vehicle. The fourth switch 22 is used to redundantly collect the released state of the P-range or EPB switch of the vehicle.

It is easy to understand that when the vehicle driver has a parking intention, the P-gear or EPB switch may be activated, the first switch 19 and the second switch 20 may acquire the activation state of the P-gear or EPB switch, and the first control module 05 and the second control module 09 may recognize that the vehicle driver has a parking intention through the first switch 19 and the second switch 20, respectively.

In contrast, when the vehicle driver does not have the parking intention, the release operation may be performed on the P-speed or EPB switch, the third switch 21 and the fourth switch 22 may collect the release state of the P-speed or EPB switch, and accordingly, the first control module 05 and the second control module 09 may recognize that the vehicle driver does not have the parking intention through the third switch 21 and the fourth switch 22.

In an alternative embodiment, the first power source 06 is connected to the second power source 10 via a circuit breaker. When the first control path 033 or the second control path 04 fails, the circuit breaker opens.

In an alternative embodiment, the driving parameter signal source 02 may include: the system comprises a vehicle speed acquisition module and/or a motor rotating speed acquisition module.

The vehicle speed acquisition module is used for acquiring the running speed of the vehicle.

Alternatively, the vehicle speed acquisition module may be a body electronic stability system (electronic stability program, ESP) controller for acquiring and calculating the travel speed of the vehicle. The vehicle speed acquisition module can also be realized by other controllers, and the implementation mode of the vehicle speed acquisition module is not limited in the embodiment of the application.

The motor rotation speed acquisition module is used for acquiring the motor rotation speed of the vehicle.

Optionally, the motor rotation speed acquisition module may be a whole vehicle control unit, and is configured to acquire and calculate a motor rotation speed of the vehicle. The motor rotation speed acquisition module can be realized by other controllers, and the implementation mode of the motor rotation speed acquisition module is not limited in the embodiment of the application.

The vehicle speed acquisition module and the motor rotating speed acquisition module are realized through two controllers which are mutually independent.

Correspondingly, the first CAN bus 08 and the second CAN bus 12 are used for transmitting CAN signals such as ESP speed and motor speed.

In an alternative embodiment, the first CAN bus 08 and the second CAN bus 12 are two relatively independent CAN paths, such as a power CAN and a chassis CAN, and the implementation of the first CAN bus 08 and the second CAN bus 12 is not limited by the embodiment of the present application.

In the present application, the low-voltage power supplies of the first control path 03 and the second control path 04, that is, the first power supply 06 and the second power supply 10 are relatively independent, the vehicle speed acquisition module and the motor rotation speed acquisition module are mutually independent, the parking state acquisition circuits corresponding to the first control path 03 and the second control path 04 are mutually independent, and the first CAN bus 08 and the second CAN bus 12 are mutually independent. Therefore, the application can meet the requirement of the GB21670 on the parking redundancy control, and simultaneously, in order to reduce the safety integrity grade (automotive safety integrity level, ASIL) of the automobile for the EPB control chip, the control of the left caliper and the control of the right caliper are relatively independent in combination with the independent requirement of the ASIL decomposition in ISO26262, and the first control channel 03 and the second control channel 04 have no common cause failure point.

In addition, the left caliper executing module 07 and the right caliper executing module 11 of the present application respectively and simultaneously receive parking requests from the first control module 05 and the second control module 09, and perform logical and operation on the two parking requests, so that the ASIL D of SG01 and SG02 can be effectively decomposed, that is, the first control path 03 and the second control path 04 only need to satisfy the ASIL B level.

For easy understanding, the electronic parking control method provided by the application is specifically described below with reference to the accompanying drawings.

Fig. 3 is a flowchart illustrating an electronic parking control method according to an exemplary embodiment, which includes the steps of:

s1, a first control module obtains the parking state of a vehicle and the driving parameters of the vehicle.

S2, when the acquired parking state and driving parameters meet preset parking conditions, the first control module generates a first parking request.

S3, the second control module redundantly acquires the parking state of the vehicle and the driving parameters of the vehicle.

And S4, when the parking state and the driving parameters obtained through redundancy meet the parking conditions, the second control module generates a second parking request.

Optionally, the driving parameters may include: the running speed of the vehicle and/or the motor speed of the vehicle.

And when the acquired parking state and the driving parameters meet the parking conditions, the two-side control modules respectively send out parking requests, and then S5 and S6 are executed.

S5, responding to the first parking request and the second parking request, and braking the left wheel of the vehicle by the left caliper executing module.

And S6, responding to the first parking request and the second parking request, and braking the right wheel of the vehicle by the right caliper executing module.

Optionally, the parking condition includes: the parking state is the starting state of a P gear or an EPB switch of the vehicle, and the driving parameter is smaller than a preset parking threshold value.

The pre-driving chips at the two sides respectively receive parking requests of the control modules at the two sides, judge whether the control modules at the two sides have the parking requests at the same time, and if so, instruct the corresponding calipers to respectively execute the braking of the wheels at the two sides.

It should be noted that, for the safety target SG01 (the unexpected execution of unilateral parking should be avoided when the vehicle is traveling at high speed), the first control module and the second control module are both connected with the left caliper execution module and the right caliper execution module at the same time, and when the vehicle has a parking request, the first control module and the second control module can ensure that the left wheel and the right wheel are braked at the same time so as to avoid unilateral parking.

For the safety target SG02 (the unexpected execution of static parking should be avoided during high-speed driving), in the present application, the judgment of the parking request by the first control module and the second control module is calculated independently, and the left caliper executing module and the right caliper executing module need to receive the first parking request and the second parking request at the same time, i.e. the first control module and the second control module execute the static parking only when requesting for parking.

Therefore, from the viewpoint of functional safety, the present application employs logical operations of "logical AND" (AND) for the first parking request AND the second parking request, the left caliper performing block AND the right caliper performing block. For SG01, if unexpected execution of single-side parking occurs, the first control module and the second control module are required to generate errors simultaneously, a parking request is sent, parking execution of the parking request on wheels on the left side and the right side is different, multiple points are required to be disabled simultaneously, and occurrence probability is very low. For SG02, if unexpected static parking is performed, the first control module and the second control module are required to be in error at the same time, and a parking request is sent. The application can effectively decompose ASIL D of SG01 and SG02, namely, the first control module and the second control module only need to meet ASIL B grade.

In one possible implementation, as shown in fig. 4, in order to reduce the invalid transmission of signals in the CAN bus, the present application may identify the parking intention of the driver of the vehicle through the parking state, and then acquire the driving parameters of the vehicle. In S1, the method for obtaining the parking state of the vehicle and the driving parameters of the vehicle by the first control module may include:

s11, the first control module acquires a parking state.

And S12, when the parking state is the P gear of the vehicle or the starting state of the EPB switch, the first control module acquires driving parameters.

Correspondingly, in S3, the method for redundantly obtaining the parking state of the vehicle and the driving parameters of the vehicle by the second control module may include:

s31, the second control module acquires a parking state.

S32, when the parking state is the P gear of the vehicle or the starting state of the EPB switch, the second control module acquires driving parameters.

In one possible way, as shown in fig. 4, S7 and S8 may be performed when the driving parameters include the driving speed and the motor rotation speed.

And S7, the first control module compares and checks the motor rotation speed and the running speed so as to judge the current vehicle speed.

S8, the second control module compares and checks the motor rotation speed and the running speed so as to judge the current vehicle speed.

If it is determined that the driver of the vehicle has a parking intention, further determining driving parameters of the vehicle, as shown in fig. 4, S2 may include:

s21, when the driving parameter is smaller than a preset parking threshold value, the first control module generates a first parking request.

Accordingly, S4 may include:

and S41, when the driving parameter is smaller than a preset parking threshold value, the second control module generates a second parking request.

The foregoing description of the solution provided by the embodiments of the present application has been mainly presented in terms of a method. In order to achieve the above functions, the electronic parking control device or the electronic apparatus includes a hardware structure and/or a software module that perform respective functions. Those of skill in the art will readily appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as hardware or combinations of hardware and computer software. Whether a function is implemented as hardware or computer software driven hardware depends upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.

According to the method, the electronic parking control device or the electronic equipment can be divided into the functional modules, for example, the electronic parking control device or the electronic equipment can comprise each functional module corresponding to each functional division, and two or more functions can be integrated into one processing module. The integrated modules may be implemented in hardware or in software functional modules. It should be noted that, in the embodiment of the present application, the division of the modules is schematic, which is merely a logic function division, and other division manners may be implemented in actual implementation.

Fig. 5 is a block diagram illustrating an electronic parking control apparatus according to an exemplary embodiment. Referring to fig. 5, the electronic parking control apparatus includes: a first acquisition unit 501, a first generation unit 502, a second acquisition unit 503, a second generation unit 504, a first execution unit 505, and a second execution unit 506.

A first acquiring unit 501 is configured to acquire a parking state of the vehicle and a driving parameter of the vehicle.

The first generating unit 502 is configured to generate a first parking request when the acquired parking state and the driving parameter meet a preset parking condition.

A second acquiring unit 503 for redundantly acquiring a parking state of the vehicle and a driving parameter of the vehicle.

And a second generating unit 504, configured to generate a second parking request when the parking state and the driving parameter that are obtained by redundancy meet the parking condition.

The first executing unit 505 is configured to brake a left wheel of the vehicle in response to the first parking request and the second parking request.

And a second actuating unit 506 for braking a right wheel of the vehicle in response to the first parking request and the second parking request.

In one possible embodiment, the parking condition includes: the parking state is the starting state of a P gear or EPB switch of the vehicle, and the driving parameter is smaller than a preset parking threshold value; the first acquisition unit 501/the second acquisition unit 503 are specifically configured to: acquiring a parking state; and when the parking state is the P gear of the vehicle or the starting state of the EPB switch, acquiring the driving parameters.

In one possible embodiment, the driving parameters include: the running speed of the vehicle and/or the motor speed of the vehicle; when the driving parameters include a driving speed and a motor rotation speed, the device further comprises: a first checking unit 507/a second checking unit 508.

The first checking unit 507/the second checking unit 508 is used for comparing and checking the motor rotation speed and the driving speed.

The specific manner in which the various modules perform the operations in the apparatus of the above embodiments have been described in detail in connection with the embodiments of the method, and will not be described in detail herein.

Fig. 6 is a block diagram of an electronic device, according to an example embodiment. As shown in fig. 6, the electronic device includes, but is not limited to: a processor 601 and a memory 602.

The memory 602 is used for storing executable instructions of the processor 601. It is understood that the processor 601 is configured to execute instructions to implement the electronic parking control method in the above embodiment.

It should be noted that the electronic device structure shown in fig. 6 is not limited to the electronic device, and the electronic device may include more or less components than those shown in fig. 6, or may combine some components, or may have different arrangements of components, as will be appreciated by those skilled in the art.

The processor 601 is a control center of the electronic device, connects various parts of the entire electronic device using various interfaces and lines, and performs various functions of the electronic device and processes data by running or executing software programs and/or modules stored in the memory 602, and calling data stored in the memory 602, thereby performing overall monitoring of the electronic device. The processor 601 may include one or more processing units. Alternatively, the processor 601 may integrate an application processor that primarily handles operating systems, user interfaces, applications, etc., and a modem processor that primarily handles wireless communications. It will be appreciated that the modem processor described above may not be integrated into the processor 601.

The memory 602 may be used to store software programs as well as various data. The memory 602 may mainly include a storage program area and a storage data area, wherein the storage program area may store an operating system, application programs (such as a determination unit, a processing unit, etc.) required for at least one functional module, and the like. In addition, the memory 602 may include high-speed random access memory, and may also include non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other volatile solid-state storage device.

In an exemplary embodiment, a computer readable storage medium comprising instructions, e.g. a memory 602 comprising instructions, executable by the processor 601 of the electronic device 600 to implement the method in the above-described embodiments is also provided.

In actual implementation, the functions of the first obtaining unit 501, the first generating unit 502, the second obtaining unit 503, the second generating unit 504, the first executing unit 505, the second executing unit 506, the first checking unit 507, and the second checking unit 508 in fig. 5 may be implemented by the processor 601 in fig. 6 calling the computer program stored in the memory 602. For specific implementation, reference may be made to the description of the method in the above embodiment, and details are not repeated here.

Alternatively, the computer readable storage medium may be a non-transitory computer readable storage medium, for example, a Read-Only Memory (ROM), a random access Memory (Random Access Memory, RAM), a CD-ROM, a magnetic tape, a floppy disk, an optical data storage device, and the like.

In an exemplary embodiment, embodiments of the application also provide a computer program product comprising one or more instructions executable by the processor 601 of the electronic device to perform the method of the above-described embodiments.

It should be noted that, when the instructions in the computer readable storage medium or one or more instructions in the computer program product are executed by the processor of the electronic device, the processes of the foregoing method embodiments are implemented, and the technical effects similar to those of the foregoing method can be achieved, so that repetition is avoided, and no further description is provided herein.

From the foregoing description of the embodiments, it will be apparent to those skilled in the art that, for convenience and brevity of description, only the above-described division of functional modules is illustrated, and in practical application, the above-described functional allocation may be performed by different functional modules according to needs, i.e. the internal structure of the apparatus is divided into different functional modules, so as to perform all the classification parts or part of the functions described above.

In the several embodiments provided by the present application, it should be understood that the disclosed apparatus and method may be implemented in other manners. For example, the apparatus embodiments described above are merely illustrative, e.g., the division of modules or units is merely a logical function division, and there may be additional divisions when actually implemented, e.g., multiple units or components may be combined or integrated into another apparatus, or some features may be omitted or not performed. Alternatively, the coupling or direct coupling or communication connection shown or discussed with each other may be an indirect coupling or communication connection via some interfaces, devices or units, which may be in electrical, mechanical or other form.

The units described as separate parts may or may not be physically separate, and the parts shown as units may be one physical unit or a plurality of physical units, may be located in one place, or may be distributed in a plurality of different places. The purpose of the embodiment scheme can be achieved by selecting part or all of the classification part units according to actual needs.

In addition, each functional unit in the embodiments of the present application may be integrated in one processing unit, or each unit may exist alone physically, or two or more units may be integrated in one unit. The integrated units may be implemented in hardware or in software functional units.

The integrated units, if implemented in the form of software functional units and sold or used as stand-alone products, may be stored in a readable storage medium. Based on such understanding, the technical solution of the embodiments of the present application, or the portion contributing to the prior art or the whole classification portion or portion of the technical solution, may be embodied in the form of a software product stored in a storage medium, where the software product includes several instructions to cause a device (may be a single-chip microcomputer, a chip or the like) or a processor (processor) to execute the whole classification portion or part of the steps of the method of the embodiments of the present application. And the aforementioned storage medium includes: a usb disk, a removable hard disk, a ROM, a RAM, a magnetic disk, or an optical disk, etc.

The present application is not limited to the above embodiments, and any changes or substitutions within the technical scope of the present application should be covered by the scope of the present application. Therefore, the protection scope of the application is subject to the protection scope of the claims.

Claims

1. An electronic parking control system, comprising: the parking switch signal source, the driving parameter signal source, the first control path and the second control path;

the first control path includes: the first control module, the first power supply and the left caliper executing module;

the second control path includes: the second control module, the second power supply and the right caliper executing module;

the first control module is connected with the parking switch signal source and used for acquiring the parking state of the vehicle;

the second control module is connected with the parking switch signal source and used for obtaining the parking state in a redundancy way;

the first control module is connected with the driving parameter signal source through a first CAN bus and is used for acquiring driving parameters of the vehicle;

the second control module is connected with the driving parameter signal source through a second CAN bus and is used for obtaining the driving parameters in a redundancy way;

the first power supply is connected with the first control module and is used for supplying power to the first control module;

the second power supply is connected with the second control module and is used for supplying power to the second control module;

the left caliper executing module is respectively connected with the first control module and the second control module and is used for braking left wheels of the vehicle;

the right caliper executing module is respectively connected with the first control module and the second control module and is used for braking the right wheel of the vehicle.

2. The system of claim 1, wherein the park condition comprises: the starting state or the releasing state of the P gear or the EPB switch of the vehicle; the parking switch signal source includes: a first switch, a second switch, a third switch and a fourth switch;

the first switch is used for collecting the starting state of a P gear or EPB switch of the vehicle;

the second switch is used for redundantly collecting the starting state of the P gear or EPB switch of the vehicle;

the third switch is used for collecting the release state of a P gear or EPB switch of the vehicle;

the fourth switch is used for redundantly collecting the release state of the P gear or EPB switch of the vehicle;

the first switch and the third switch are connected with the first control module;

the second switch and the fourth switch are connected with the second control module.

3. The system of claim 1, wherein the first power source and the second power source are connected by a circuit breaker; when the first control path or the second control path fails, the circuit breaker is opened.

4. The system of claim 3, wherein the left caliper performing module comprises: a first pre-drive chip and a left caliper motor; the first pre-driving chip is connected with the left caliper motor through an H bridge; the right caliper performing module includes: the second pre-driving chip and the right caliper motor; the second pre-driving chip is connected with the right caliper motor through an H bridge;

the first power supply is connected with the first pre-driving chip and is used for supplying power to the first pre-driving chip;

the second power supply is connected with the second pre-driving chip and is used for supplying power to the second pre-driving chip.

5. The system of claim 1, wherein the driving parameter signal source comprises: the system comprises a vehicle speed acquisition module and/or a motor rotating speed acquisition module;

the vehicle speed acquisition module is used for acquiring the running speed of the vehicle;

6. An electronic parking control method applied to an electronic parking control system according to claims 1 to 5, characterized by comprising:

acquiring a parking state of a vehicle and driving parameters of the vehicle;

when the acquired parking state and driving parameters meet preset parking conditions, a first parking request is generated;

redundant acquisition of the parking state of the vehicle and the driving parameters of the vehicle;

generating a second parking request when the parking state and the driving parameters obtained in a redundant way meet the parking conditions;

braking a left wheel of the vehicle in response to the first parking request and the second parking request;

and braking a right wheel of the vehicle in response to the first parking request and the second parking request.

7. The method of claim 6, wherein the parking condition comprises: the parking state is the starting state of a P gear or EPB switch of the vehicle, and the driving parameter is smaller than a preset parking threshold value; the acquiring the parking state of the vehicle and the driving parameters of the vehicle comprises the following steps:

acquiring the parking state;

and when the parking state is the starting state of the P gear or the EPB switch of the vehicle, acquiring the driving parameters.

8. The method of claim 7, wherein the driving parameters include: the running speed of the vehicle and/or the motor speed of the vehicle; when the driving parameters include the driving speed and the motor rotation speed, the method further includes:

and comparing and checking the motor rotating speed and the running speed.

9. An electronic parking control apparatus, comprising: the device comprises a first acquisition unit, a first generation unit, a second acquisition unit, a second generation unit, a first execution unit and a second execution unit;

the first acquisition unit is used for acquiring the parking state of the vehicle and the driving parameters of the vehicle;

the first generation unit is used for generating a first parking request when the acquired parking state and driving parameters meet preset parking conditions;

the second acquisition unit is used for redundantly acquiring the parking state of the vehicle and the driving parameters of the vehicle;

the second generating unit is used for generating a second parking request when the parking state and the driving parameters obtained in a redundant mode meet the parking conditions;

the first execution unit is used for responding to the first parking request and the second parking request and braking the left wheel of the vehicle;

the second execution unit is used for responding to the first parking request and the second parking request and braking the right wheel of the vehicle.

10. The apparatus of claim 9, wherein the parking condition comprises: the parking state is the starting state of a P gear or EPB switch of the vehicle, and the driving parameter is smaller than a preset parking threshold value; the first acquisition unit/the second acquisition unit is specifically configured to:

acquiring the parking state;

11. The apparatus of claim 10, wherein the driving parameters comprise: the running speed of the vehicle and/or the motor speed of the vehicle; when the driving parameters include the driving speed and the motor rotation speed, the apparatus further includes: a first check unit/a second check unit;

the first checking unit/the second checking unit is used for comparing and checking the motor rotating speed and the driving speed.

12. An electronic device, comprising:

a processor;

a memory for storing the processor-executable instructions;

wherein the processor is configured to execute the instructions to implement the method of any one of claims 6 to 8.

13. A computer readable storage medium, characterized in that, when computer-executable instructions stored in the computer readable storage medium are executed by a processor of an electronic device, the electronic device is capable of performing the method of any one of claims 6 to 8.