CN112158194A - Electronic parking control system and control method - Google Patents
Electronic parking control system and control method Download PDFInfo
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- CN112158194A CN112158194A CN202010955022.9A CN202010955022A CN112158194A CN 112158194 A CN112158194 A CN 112158194A CN 202010955022 A CN202010955022 A CN 202010955022A CN 112158194 A CN112158194 A CN 112158194A
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- 238000000034 method Methods 0.000 title claims abstract description 14
- 238000006243 chemical reaction Methods 0.000 claims description 22
- 238000012544 monitoring process Methods 0.000 claims description 7
- 238000005070 sampling Methods 0.000 claims description 6
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- 230000005540 biological transmission Effects 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W30/00—Purposes of road vehicle drive control systems not related to the control of a particular sub-unit, e.g. of systems using conjoint control of vehicle sub-units
- B60W30/06—Automatic manoeuvring for parking
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L15/00—Methods, circuits, or devices for controlling the traction-motor speed of electrically-propelled vehicles
- B60L15/20—Methods, circuits, or devices for controlling the traction-motor speed of electrically-propelled vehicles for control of the vehicle or its driving motor to achieve a desired performance, e.g. speed, torque, programmed variation of speed
- B60L15/2009—Methods, circuits, or devices for controlling the traction-motor speed of electrically-propelled vehicles for control of the vehicle or its driving motor to achieve a desired performance, e.g. speed, torque, programmed variation of speed for braking
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/72—Electric energy management in electromobility
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- Engineering & Computer Science (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Automation & Control Theory (AREA)
- Power Engineering (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
Abstract
The invention provides an electronic parking control system and a control method, wherein the control system comprises an MCU (microprogrammed control Unit), a main left-path motor module, a main right-path motor module, a redundant left-path motor module and a redundant right-path motor module, wherein the MCU controls to preferentially use the main left-path motor module and the main right-path motor module to work and monitors the working states of the main left-path motor module and the main right-path motor module, and when the main left-path motor module or the main right-path motor module is monitored to be in a failure mode, the main left-path motor module and the main right-path motor module are controlled to be switched off and controlled to work. The electronic parking control system and the control method effectively avoid the danger that the vehicle cannot be braked or released under the condition that the main motor driving module fails, and effectively improve the safety of the vehicle parking system.
Description
Technical Field
The invention relates to the technical field of automobile electronics, in particular to an electronic parking control system and a control method.
Background
The electronic parking technology of the automobile has gradually replaced the conventional mechanical operating system, and the technology is developed into an automatic parking device on the basis of the conventional manual parking brake. With the development of scientific technology and the improvement of the requirements of drivers on the control performance and the safety performance of motor vehicles, the existing single electronic parking control system cannot meet the requirements on the safety performance, so that a single-control dual-redundancy electronic control system needs to be developed to greatly improve the safety of the parking system.
Disclosure of Invention
In view of the shortcomings of the prior art, the present invention provides an electronic parking control system and a control method with high safety.
In order to achieve the above purpose, the embodiment of the invention adopts the following technical scheme:
the utility model provides an electron parking control system, control system includes MCU, main left side way motor module, main right side way motor module, redundant left side way motor module and redundant right side way motor module, MCU control priority uses main left side way motor module and main right side way motor module carry out work, and monitor the operating condition of main left side way motor module and main right side way motor module, when monitoring main left side way motor module or main right side way motor module are in failure mode, then control cuts off main left side way motor module and main right side way motor module, and switching control redundant left side way motor module and redundant right side way motor module carry out work.
Furthermore, the control system also comprises an inclination angle sensor connected with the MCU, and the inclination angle sensor is used for monitoring the inclination angle of the vehicle and transmitting the inclination angle to the MCU.
Furthermore, the control system further comprises a signal switching module connected between the MCU and the main left motor module, the main right motor module, the redundant left motor module and the redundant right motor module, and used for transmitting control signals between the MCU and the main left motor module, the main right motor module, the redundant left motor module and the redundant right motor module.
Further, main left way motor module, main right way motor module, redundant left way motor module and redundant right way motor module all include current sampling circuit for the monitoring main left way motor module, main right way motor module, redundant left way motor module and redundant right way motor module's operating condition, and pass through the signal switches the module and conveys MCU.
Further, the control system further comprises a motor switching module connected between the MCU and the main left motor module, the main right motor module, the redundant left motor module and the redundant right motor module, and used for controlling the main left motor module and the main right motor module to work or the redundant left motor module and the redundant right motor module to work according to the instruction of the MCU.
Further, the motor switching module is connected with a vehicle connector and used for switching channels of the main left-path motor module, the main right-path motor module, the redundant left-path motor module and the redundant right-path motor module and cutting off the failed main left-path motor module and the main right-path motor module or the redundant left-path motor module and the redundant right-path motor module.
Furthermore, control system still includes electron parking switch and electron parking switch signal processing circuit, electron parking switch signal processing circuit connect in MCU with between the vehicle connector, electron parking switch with the vehicle connector links to each other for pass through the vehicle connector with electron parking switch signal processing circuit carries out the conversion processing and then conveys to MCU, also follow MCU receives after the display signal carries out the conversion processing the vehicle connector convey to electron parking switch shows.
Furthermore, the control system also comprises a system safety protection circuit connected between the MCU and the vehicle connector, wherein the system safety protection circuit comprises a CAN signal conversion circuit used for receiving CAN signals of the vehicle from the vehicle connector, converting the CAN signals and transmitting the converted CAN signals to the MCU, and also receiving control signals from the MCU, converting the signals and transmitting the converted signals to a vehicle CAN bus through the vehicle connector.
Furthermore, the control system further comprises a power supply reverse connection protection circuit connected between the system safety protection circuit and the vehicle connector, and is used for receiving power supply of the vehicle from the vehicle connector, converting the power supply, transmitting the power supply to the system safety protection circuit, supplying power to the MCU, and simultaneously transmitting the power supply to the electronic parking switch signal processing circuit, the first power supply conversion module and the second power supply conversion module, wherein the first power supply conversion module supplies power to the main left motor module and the main right motor module, and the second power supply conversion module supplies power to the redundant left motor module and the redundant right motor module.
An electronic parking control method using the control system as described above, the control method comprising:
the MCU acquires the CAN signal of the vehicle through the system safety protection circuit and the vehicle connector to further acquire the vehicle parameter, meanwhile, the vehicle inclination angle is obtained through an inclination angle sensor, a control result is generated through comprehensive operation, the main left-path motor module and the main right-path motor module are preferentially controlled to work through the signal switching module and the motor switching module, the current sampling circuit in the main left-path motor module and the main right-path motor module monitors the working state of the main left-path motor module and the main right-path motor module, and is transmitted to the MCU through the signal switching module, the MCU monitors that the main left motor module or the main right motor module is in a failure mode, and controlling to cut off the main left-path motor module and the main right-path motor module through the signal switching module and the motor switching module, and switching and controlling the redundant left-path motor module and the redundant right-path motor module to work.
The electronic parking control system and the control method effectively avoid the danger that the vehicle cannot be braked or released under the condition that the main motor driving module fails, and effectively improve the safety of the vehicle parking system.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic structural diagram of an electronic parking control system according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Fig. 1 is a schematic structural diagram of an electronic parking control system according to an embodiment of the present invention. The control system comprises an MCU (microprogrammed control unit), a main left-path motor module, a main right-path motor module, a redundant left-path motor module and a redundant right-path motor module, wherein the MCU controls the priority use of the main left-path motor module and the main right-path motor module to work and monitor the working states of the main left-path motor module and the main right-path motor module, and when the main left-path motor module or the main right-path motor module is monitored to be in a failure mode, the main left-path motor module and the main right-path motor module are controlled to be switched off and controlled to work.
Furthermore, the control system also comprises an inclination angle sensor connected with the MCU, and the inclination angle sensor is used for monitoring the inclination angle of the vehicle and transmitting the inclination angle to the MCU.
The control system further comprises a signal switching module connected between the MCU and the main left motor module, the main right motor module, the redundant left motor module and the redundant right motor module, and used for transmitting control signals between the MCU and the main left motor module, the main right motor module, the redundant left motor module and the redundant right motor module.
The main left-path motor module, the main right-path motor module, the redundant left-path motor module and the redundant right-path motor module all comprise current sampling circuits, and are used for monitoring the working states of the main left-path motor module, the main right-path motor module, the redundant left-path motor module and the redundant right-path motor module and transmitting the working states to the MCU through the signal switching module.
In addition, the control system further comprises a motor switching module connected between the MCU and the main left-path motor module, the main right-path motor module, the redundant left-path motor module and the redundant right-path motor module, and used for controlling the main left-path motor module and the main right-path motor module to work or the redundant left-path motor module and the redundant right-path motor module to work according to the instruction of the MCU.
And meanwhile, the motor switching module is also connected with a vehicle connector and used for switching channels of the main left-path motor module, the main right-path motor module, the redundant left-path motor module and the redundant right-path motor module and cutting off the failed main left-path motor module, the main right-path motor module or the redundant left-path motor module and the redundant right-path motor module.
More specifically, control system still includes electron parking switch and electron parking switch signal processing circuit, electron parking switch signal processing circuit connect in MCU with between the vehicle connector, electron parking switch with the vehicle connector links to each other for pass through the vehicle connector with electron parking switch signal sends to electron parking switch signal processing circuit carries out the conversion processing then sends to MCU, also follow MCU receives the display signal and carries out the conversion processing after the transmission processing through the vehicle connector sends to the electron parking switch carries out the demonstration.
The control system also comprises a system safety protection circuit connected between the MCU and the vehicle connector, wherein the system safety protection circuit comprises a CAN signal conversion circuit used for receiving CAN signals of the vehicle from the vehicle connector, converting the CAN signals and transmitting the CAN signals to the MCU, and also receiving control signals from the MCU, converting the control signals and transmitting the control signals to a vehicle CAN bus through the vehicle connector.
And finally, the control system further comprises a power supply reverse connection protection circuit connected between the system safety protection circuit and the vehicle connector, and is used for receiving the power supply of the vehicle from the vehicle connector, converting the power supply into a converted power supply, transmitting the converted power supply to the system safety protection circuit and further supplying power to the MCU, and simultaneously transmitting the converted power supply to the electronic parking switch signal processing circuit, the first power supply conversion module and the second power supply conversion module, wherein the first power supply conversion module supplies power to the main left motor module and the main right motor module, and the second power supply conversion module supplies power to the redundant left motor module and the redundant right motor module. The power supply reverse connection protection circuit also comprises a filter circuit.
The present invention also provides an electronic parking control method, using the control system as described above, the control method comprising:
the MCU acquires a vehicle CAN signal through a system safety protection circuit and a vehicle connector to further acquire vehicle parameters, such as vehicle speed, four wheel speeds, engine rotating speed, engine torque, accelerator pedal position, a gear switch, a clutch signal, a brake signal and the like, simultaneously acquires a vehicle inclination angle through an inclination angle sensor, generates a control result through comprehensive operation, preferentially controls a main left-path motor module and a main right-path motor module to work through a signal switching module and a motor switching module, monitors the working states of the main left-path motor module and the main right-path motor module through current sampling circuits in the main left-path motor module and the main right-path motor module, and transmits the control result to the MCU through the signal switching module, the MCU monitors that the main left-path motor module or the main right-path motor module is in a failure mode, and controls to cut off the main left-path motor module and the main right-path motor module through the signal switching module and the motor switching module, and the redundant left motor module and the redundant right motor module are switched and controlled to work.
The electronic parking control system and the control method effectively avoid the danger that the vehicle cannot be braked or released under the condition that the main motor driving module fails, and effectively improve the safety of the vehicle parking system. In addition, the single-control dual-redundancy circuit driving module is adopted, the requirement of functional safety ISO26262 is met, the Fail Safe (Fail Safe) system can be improved to a High reliability (High Availability) system, and the safety of electronic parking is improved.
The above description is only an embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention disclosed herein are intended to be covered by the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.
Claims (10)
1. The utility model provides an electron parking control system, its characterized in that, control system includes MCU, main left side way motor module, main right side way motor module, redundant left side way motor module and redundant right side way motor module, MCU control priority uses main left side way motor module and main right side way motor module carry out work, and monitor the operating condition of main left side way motor module and main right side way motor module, when monitoring main left side way motor module or main right side way motor module are in failure mode, then control cuts off main left side way motor module and main right side way motor module, and switching control redundant left side way motor module and redundant right side way motor module carry out work.
2. The control system of claim 1, further comprising a tilt sensor connected to the MCU, wherein the tilt sensor is configured to monitor a tilt angle of the vehicle and transmit the tilt angle to the MCU.
3. The control system of claim 2, further comprising a signal switching module connected between the MCU and the main left, main right, redundant left and redundant right motor modules for transmitting control signals between the MCU and the main left, main right, redundant left and redundant right motor modules.
4. The control system of claim 3, wherein the main left motor module, the main right motor module, the redundant left motor module and the redundant right motor module each include a current sampling circuit for monitoring the operating states of the main left motor module, the main right motor module, the redundant left motor module and the redundant right motor module, and transmitting the operating states to the MCU through the signal switching module.
5. The control system of claim 4, further comprising a motor switching module connected between the MCU and the main left motor module, the main right motor module, the redundant left motor module and the redundant right motor module for controlling the main left motor module and the main right motor module or the redundant left motor module and the redundant right motor module to operate according to the instruction of the MCU.
6. The control system of claim 5, wherein the motor switching module is further connected to a vehicle connector for switching channels between the main left motor module and the main right motor module and the redundant left motor module and the redundant right motor module, and switching off the failed main left motor module and the main right motor module or the redundant left motor module and the redundant right motor module.
7. The control system according to claim 6, further comprising an electronic parking switch and an electronic parking switch signal processing circuit, wherein the electronic parking switch signal processing circuit is connected between the MCU and the vehicle connector, the electronic parking switch is connected with the vehicle connector and used for transmitting an electronic parking switch signal to the electronic parking switch signal processing circuit through the vehicle connector for conversion processing and then transmitting the electronic parking switch signal to the MCU, and also receiving a display signal from the MCU for conversion processing and then transmitting the display signal to the electronic parking switch through the vehicle connector for display.
8. The control system of claim 7, further comprising a system safety protection circuit connected between the MCU and the vehicle connector, wherein the system safety protection circuit comprises a CAN signal conversion circuit for receiving a CAN signal of the vehicle from the vehicle connector, converting the CAN signal, and transmitting the CAN signal to the MCU, and receiving a control signal from the MCU, converting the control signal, and transmitting the control signal to the vehicle CAN bus through the vehicle connector.
9. The control system of claim 8, further comprising a reverse power protection circuit connected between the system safety protection circuit and the vehicle connector, for receiving power of a vehicle from the vehicle connector for conversion processing, transmitting the power to the system safety protection circuit to supply power to the MCU, and transmitting the power to the electronic parking switch signal processing circuit, a first power conversion module and a second power conversion module, wherein the first power conversion module supplies power to the main left motor module and the main right motor module, and the second power conversion module supplies power to the redundant left motor module and the redundant right motor module.
10. An electronic parking control method characterized by using the control system according to any one of claims 1 to 9, the control method comprising:
the MCU acquires the CAN signal of the vehicle through the system safety protection circuit and the vehicle connector to further acquire the vehicle parameter, meanwhile, the vehicle inclination angle is obtained through an inclination angle sensor, a control result is generated through comprehensive operation, the main left-path motor module and the main right-path motor module are preferentially controlled to work through the signal switching module and the motor switching module, the current sampling circuit in the main left-path motor module and the main right-path motor module monitors the working state of the main left-path motor module and the main right-path motor module, and is transmitted to the MCU through the signal switching module, the MCU monitors that the main left motor module or the main right motor module is in a failure mode, and controlling to cut off the main left-path motor module and the main right-path motor module through the signal switching module and the motor switching module, and switching and controlling the redundant left-path motor module and the redundant right-path motor module to work.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010955022.9A CN112158194A (en) | 2020-09-11 | 2020-09-11 | Electronic parking control system and control method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010955022.9A CN112158194A (en) | 2020-09-11 | 2020-09-11 | Electronic parking control system and control method |
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| CN112158194A true CN112158194A (en) | 2021-01-01 |
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| CN202010955022.9A Pending CN112158194A (en) | 2020-09-11 | 2020-09-11 | Electronic parking control system and control method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112721897A (en) * | 2021-01-28 | 2021-04-30 | 坤泰车辆系统（常州）有限公司 | Double-control double-drive pull-wire type EPB control system and parking force self-adaptive control method |
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| CN109878504A (en) * | 2017-12-05 | 2019-06-14 | 现代自动车株式会社 | The system and method that parking for vehicle controls |
| CN110654239A (en) * | 2019-01-10 | 2020-01-07 | 苏州萨克汽车科技有限公司 | Automobile parking system with redundancy backup function and failure processing method thereof |
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2020
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| CN105059282A (en) * | 2015-08-10 | 2015-11-18 | 苏州萨克汽车科技有限公司 | Braking system of electronic hand brake and control method thereof |
| CN109878504A (en) * | 2017-12-05 | 2019-06-14 | 现代自动车株式会社 | The system and method that parking for vehicle controls |
| CN111169455A (en) * | 2018-11-13 | 2020-05-19 | 克诺尔商用车制动系统有限公司 | Redundant brake system and method for operating such a brake system |
| CN110654239A (en) * | 2019-01-10 | 2020-01-07 | 苏州萨克汽车科技有限公司 | Automobile parking system with redundancy backup function and failure processing method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112721897A (en) * | 2021-01-28 | 2021-04-30 | 坤泰车辆系统（常州）有限公司 | Double-control double-drive pull-wire type EPB control system and parking force self-adaptive control method |
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