CN117125005A - Dual MCU chassis domain controller - Google Patents
Dual MCU chassis domain controller Download PDFInfo
- Publication number
- CN117125005A CN117125005A CN202311294977.4A CN202311294977A CN117125005A CN 117125005 A CN117125005 A CN 117125005A CN 202311294977 A CN202311294977 A CN 202311294977A CN 117125005 A CN117125005 A CN 117125005A
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- Prior art keywords
- steering
- microcontroller
- module
- redundancy
- braking
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- Pending
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- 230000009977 dual effect Effects 0.000 title claims description 11
- 238000012545 processing Methods 0.000 claims abstract description 16
- 238000004891 communication Methods 0.000 claims abstract description 12
- 101100236764 Caenorhabditis elegans mcu-1 gene Proteins 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 239000006096 absorbing agent Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R16/00—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for
- B60R16/02—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements
- B60R16/023—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements for transmission of signals between vehicle parts or subsystems
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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
- B60W50/00—Details of control systems for road vehicle drive control not related to the control of a particular sub-unit, e.g. process diagnostic or vehicle driver interfaces
-
- 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
- B60W50/00—Details of control systems for road vehicle drive control not related to the control of a particular sub-unit, e.g. process diagnostic or vehicle driver interfaces
- B60W2050/0001—Details of the control system
- B60W2050/0002—Automatic control, details of type of controller or control system architecture
Abstract
The invention discloses a double MCU chassis domain controller, which comprises a first microcontroller and a second microcontroller; the first microcontroller comprises a sensor signal processing module, a communication module, a steering redundancy module and a braking redundancy module; the second microcontroller comprises a functional operation module; when the steering function operation of the second microcontroller fails, the steering redundancy module recalculates steering control and outputs a steering redundancy control instruction; and when the operation of the braking function of the second microcontroller fails, the braking redundancy module recalculates the braking control and outputs a braking redundancy control instruction. Compared with the prior art, the invention reduces the risk of braking and steering failure, reduces the processing load of the controller and reduces the risk of operation failure of the controller under the condition of exerting the advantages of high control efficiency and the like of the centralized chassis domain controller.
Description
Technical Field
The invention relates to the technical field of automobile control, in particular to a double MCU chassis domain controller.
Background
For the problems of repeated research and development, insufficient interaction capability among the controllers and the like of the control of the controllers of the current chassis system, various automobile manufacturers and automobile research institutions propose a centralized chassis domain controller to solve the problems, but the currently proposed centralized chassis domain controller has the following defects:
1. most host factories accumulate little in the braking and steering electric control technology, the braking and steering safety level is high, and the safety risk of developing a centralized chassis domain controller is high under the situation; the local centralized chassis domain controller reduces the safety risk, but the control efficiency is reduced; the safety risk is reduced while high-efficiency control is ensured, and the method is one of the technical problems currently existing.
2. All electric control subsystems in the whole chassis field in the centralized chassis field controller share the same controller, so that the operation of the controller is greatly increased, the development difficulty is increased, the processing load of the controller is higher, and the risk of operation failure exists.
Disclosure of Invention
In order to solve the technical problems, the invention provides a double MCU chassis domain controller, which comprises a first microcontroller and a second microcontroller;
the first microcontroller comprises a sensor signal processing module, a communication module, a steering redundancy module and a braking redundancy module; the second microcontroller comprises a functional operation module;
the sensor signal processing module is used for receiving and processing signals collected by the sensors of all parts and converting the signals into logic values matched with internal function operation;
the communication module is used for transmitting signals among the steering redundancy module, the braking redundancy module and the sensor signal processing module, communicating with the functional operation module of the second microcontroller and communicating with an external execution unit;
when the steering function operation of the second microcontroller fails, the steering redundancy module recalculates steering control and outputs a steering redundancy control instruction;
and when the operation of the braking function of the second microcontroller fails, the braking redundancy module recalculates the braking control and outputs a braking redundancy control instruction.
Preferably, the communication module is in communication with the functional operation module of the second microcontroller through SPI or IIC.
Preferably, the communication module communicates with the external execution unit through CAN or CAN FD.
Preferably, the steering redundancy module receives the steering wheel torque signal and the steering angle signal, and the steering function control instruction output by the second microcontroller function operation module, judges whether the steering function operation of the second microcontroller is invalid, recalculates steering control and outputs the steering redundancy control instruction when the steering function operation of the second microcontroller is invalid, and directly outputs the steering function control instruction output by the second microcontroller function operation module otherwise. The steering redundancy control command includes only basic steering assistance.
Preferably, the brake redundancy module receives the brake signal and the brake function control instruction output by the second microcontroller function operation module, judges whether the brake function operation of the second microcontroller is invalid, recalculates the brake control and outputs the brake redundancy control instruction when the brake function operation of the second microcontroller is invalid, and directly outputs the brake function control instruction output by the second microcontroller function operation module otherwise.
Compared with the prior art, the invention reduces the risk of braking and steering failure, reduces the processing load of the controller and reduces the risk of operation failure of the controller under the condition of exerting the advantages of high control efficiency and the like of the centralized chassis domain controller.
Drawings
The invention is described in further detail below with reference to the attached drawings and detailed description:
fig. 1 is a schematic diagram of a dual MCU chassis domain controller according to the present invention.
Detailed Description
Other advantages and technical effects of the present invention will become more fully apparent to those skilled in the art from the following disclosure, which is a detailed description of the present invention given by way of specific examples. The invention may be practiced or carried out in different embodiments, and details in this description may be applied from different points of view, without departing from the general inventive concept. It should be noted that the following embodiments and features in the embodiments may be combined with each other without conflict. The following exemplary embodiments of the present invention may be embodied in many different forms and should not be construed as limited to the specific embodiments set forth herein. It should be appreciated that these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the technical solution of these exemplary embodiments to those skilled in the art.
Example 1
The present embodiment as shown in fig. 1 provides a dual MCU chassis domain controller, including a first micro controller MCU1 and a second micro controller MCU2.
The first microcontroller MCU1 comprises a sensor signal processing module, a communication module, a steering redundancy module and a braking redundancy module.
The second microcontroller MCU2 contains a functional operational module for, but not limited to, basic steering and braking operations, steering and braking operations for driving assistance or autopilot, basic vehicle driving operations, vehicle driving operations for driving assistance or autopilot, and vehicle stability operations.
Sensor signal processing module: the system is used for receiving and processing signals collected by the sensors of all parts and converting the signals into logic values matched with internal function operations.
And a communication module: the system is used for transmitting signals among the steering redundancy module, the braking redundancy module and the sensor signal processing module, and communicating with the functional operation module of the second microcontroller MCU2 through SPI/IIC and communicating with an external execution unit through CAN/CAN FD.
And a steering redundancy module: and receiving a steering wheel torque signal, a steering angle signal and a steering function control instruction output by a second microcontroller MCU2 function operation module, judging whether the steering function operation of the second microcontroller MCU2 is invalid, when the steering function operation of the second microcontroller MCU2 is invalid, recalculating steering control and outputting a steering redundancy control instruction, and otherwise, directly outputting the steering function control instruction output by the second microcontroller MCU2 function operation module. The steering redundancy control command is used as a base in an abnormal state, and therefore only basic steering assistance is included, and advanced functions such as driving assistance and the like are not included.
A brake redundancy module: and receiving a braking signal and a braking function control instruction output by the second microcontroller MCU2 function operation module, judging whether the braking function operation of the second microcontroller MCU2 is invalid, when the braking function operation of the second microcontroller MCU2 is invalid, recalculating braking control and outputting a braking redundancy control instruction, and otherwise, directly outputting the braking function control instruction output by the second microcontroller MCU2 function operation module.
The component sensors include, but are not limited to, steering wheel torque sensors, steering wheel angle sensors, wheel speed sensors, inertial sensors, and body height sensors.
The external execution unit at least comprises a braking execution unit and a steering execution unit. The brake actuating unit comprises a brake actuating ECU, a parking caliper and a brake actuating mechanism assembly. The steering execution unit comprises a steering execution ECU, a steering motor and a steering execution mechanism assembly.
The external execution units may also include other chassis execution units such as including, but not limited to, power execution ECU, air pump assembly, air pressure distribution valve assembly, shock absorber solenoid valve.
The present invention has been described in detail by way of specific embodiments and examples, but these should not be construed as limiting the invention. Many variations and modifications may be made by one skilled in the art without departing from the principles of the invention, which is also considered to be within the scope of the invention.
Claims (8)
1. The double MCU chassis domain controller is characterized by comprising a first microcontroller and a second microcontroller;
the first microcontroller comprises a sensor signal processing module, a communication module, a steering redundancy module and a braking redundancy module; the second microcontroller comprises a functional operation module;
the sensor signal processing module is used for receiving and processing signals collected by the sensors of all parts and converting the signals into logic values matched with internal function operation;
the communication module is used for transmitting signals among the steering redundancy module, the braking redundancy module and the sensor signal processing module, communicating with the functional operation module of the second microcontroller and communicating with an external execution unit;
when the steering function operation of the second microcontroller fails, the steering redundancy module recalculates steering control and outputs a steering redundancy control instruction;
and when the operation of the braking function of the second microcontroller fails, the braking redundancy module recalculates the braking control and outputs a braking redundancy control instruction.
2. The dual MCU chassis domain controller of claim 1, wherein the component sensors comprise a steering wheel torque sensor, a steering wheel angle sensor, a wheel speed sensor, an inertia sensor, and a body height sensor.
3. The dual MCU chassis domain controller of claim 1, wherein the external execution unit comprises at least a brake execution unit and a steering execution unit.
4. The dual MCU chassis domain controller of claim 1, wherein the communication module communicates with the functional operational module of the second microcontroller via SPI or IIC.
5. The dual MCU chassis domain controller of claim 1, wherein the communication module communicates with an external execution unit via CAN or CAN FD.
6. The dual MCU chassis domain controller of claim 1, wherein the steering redundancy module receives the steering wheel torque signal and the steering angle signal, and the steering function control command output by the second microcontroller function operation module, and determines whether the steering function operation of the second microcontroller is disabled, and when the steering function operation of the second microcontroller is disabled, recalculates the steering control and outputs the steering redundancy control command, and otherwise directly outputs the steering function control command output by the second microcontroller function operation module.
7. The dual MCU chassis domain controller of claim 6, wherein the steering redundancy control command comprises only basic steering assistance.
8. The dual MCU chassis domain controller of claim 1, wherein the brake redundancy module receives the brake signal and the brake function control command output by the second microcontroller function operation module, and determines whether the brake function operation of the second microcontroller is disabled, and when the brake function operation of the second microcontroller is disabled, recalculates the brake control and outputs the brake redundancy control command, and otherwise directly outputs the brake function control command output by the second microcontroller function operation module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311294977.4A CN117125005A (en) | 2023-10-09 | 2023-10-09 | Dual MCU chassis domain controller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311294977.4A CN117125005A (en) | 2023-10-09 | 2023-10-09 | Dual MCU chassis domain controller |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117125005A true CN117125005A (en) | 2023-11-28 |
Family
ID=88860185
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311294977.4A Pending CN117125005A (en) | 2023-10-09 | 2023-10-09 | Dual MCU chassis domain controller |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117125005A (en) |
-
2023
- 2023-10-09 CN CN202311294977.4A patent/CN117125005A/en active Pending
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