CN211349098U - Vehicle control unit safety monitoring system based on instruction set monitoring - Google Patents
Vehicle control unit safety monitoring system based on instruction set monitoring Download PDFInfo
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- CN211349098U CN211349098U CN201922401913.5U CN201922401913U CN211349098U CN 211349098 U CN211349098 U CN 211349098U CN 201922401913 U CN201922401913 U CN 201922401913U CN 211349098 U CN211349098 U CN 211349098U
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Abstract
The utility model discloses a vehicle control unit safety monitoring system based on instruction set monitoring, including main chip, auxiliary chip and power module, communicate through the SPI bus between main chip and the auxiliary chip, the auxiliary chip obtains the running state of main chip through instruction set monitoring, when main chip breaks down, auxiliary chip resets main chip; when the main chip still fails after reset, the auxiliary chip controls the power supply module to cut off the power supply of the main chip and forcibly reset the main chip. The utility model discloses but the advantage lies in real time monitoring controller operational aspect, judges whether the controller has taken place the error, when the controller takes place the error, can in time restart the controller for the fault condition is in time solved, improves the security level of controller system, the safe operation of guarantee vehicle.
Description
Technical Field
The utility model belongs to the technical field of pure electric vehicles and specifically relates to a vehicle control unit safety monitoring system based on instruction set control is related to.
Background
With the development of electric vehicles, more and more controllers are mounted on vehicles, and for controllers which have high importance in terms of power drive calculation, torque arbitration, and other safety-related functions, safe and normal operation of the controllers becomes an important problem affecting vehicle safety.
Disclosure of Invention
An object of the utility model is to provide an improve the security level of controller system, the vehicle control unit safety monitoring system based on instruction set control of guarantee vehicle safe operation.
In order to achieve the above purpose, the utility model can adopt the following technical proposal:
the utility model discloses a vehicle control unit safety monitoring system based on instruction set control, including main chip, supplementary chip and power module, communicate through the SPI bus between main chip and the supplementary chip, the supplementary chip obtains the running state of main chip through instruction set control, and the supplementary chip resets main chip when main chip breaks down; when the main chip still fails after reset, the auxiliary chip controls the power supply module to cut off the power supply of the main chip and forcibly reset the main chip.
The main chip is MPC5607, and the auxiliary chip is 9S12GN 32.
The utility model discloses but the advantage lies in real time monitoring controller operational aspect, judges whether the controller has taken place the error, when the controller takes place the error, can in time restart the controller for the fault condition is in time solved, improves the security level of controller system, the safe operation of guarantee vehicle.
Drawings
Fig. 1 is a schematic block circuit diagram of the present invention.
Detailed Description
As shown in fig. 1, the vehicle control unit safety monitoring system based on instruction set monitoring of the present invention includes a main chip, an auxiliary chip and a power module, wherein the main chip and the auxiliary chip communicate with each other via an SPI bus, the auxiliary chip obtains the operating state of the main chip via instruction set monitoring, and the auxiliary chip resets the main chip when the main chip fails; when the main chip still fails after reset, the auxiliary chip controls the power supply module to cut off the power supply of the main chip and forcibly resets the main chip; the main chip is MPC5607, and the auxiliary chip is 9S12GN 32.
The working principle is as follows:
the instruction set monitoring process is completed through communication between a main chip (main MCU) and an auxiliary chip (auxiliary MCU), and is periodically initiated by the main MCU and verified in the auxiliary MCU;
the auxiliary MCU and the main MCU are communicated through an SPI bus, and the communication period is set to be 10 ms;
after receiving the instruction set monitoring request of the main MCU, the auxiliary MCU sends the random number to the main MCU through SPI bus communication, the main MCU calculates the result by using the random number of the auxiliary MCU according to the preset calculation rule, and returns the result to the auxiliary MCU through the SPI bus;
the auxiliary MCU compares the calculation result of the main MCU with the calculation result of the auxiliary MCU, if the results are consistent, the working state of the main MCU is considered to be normal, and if the calculation results are inconsistent for 5 times continuously, the main MCU is considered to have a fault;
if the main MCU is judged to be in fault, the auxiliary MCU resets the main MCU by sending a reset signal through IO;
if the calculation results are not consistent after resetting for 5 times, the auxiliary MCU sends a reset request signal to the power supply module through IO, and the power supply module cuts off the power supply of the main MCU to forcibly reset the main MCU.
Meanwhile, the auxiliary MCU can also reset the power supply module through IO.
Instruction set monitoring algorithm:
the 'queuing' transmitted by the auxiliary MCU to the main MCU is a random number in the form of agent 16
Calculating the formula: "answer" = (0 xFF- "query") × 0x0F +0xF 0.
Claims (2)
1. The utility model provides a vehicle control unit safety monitoring system based on instruction set control which characterized in that: the system comprises a main chip, an auxiliary chip and a power module, wherein the main chip and the auxiliary chip are communicated through an SPI bus, the auxiliary chip monitors and obtains the running state of the main chip through an instruction set, and the auxiliary chip resets the main chip when the main chip breaks down; when the main chip still fails after reset, the auxiliary chip controls the power supply module to cut off the power supply of the main chip and forcibly reset the main chip.
2. The vehicle control unit safety monitoring system based on instruction set monitoring of claim 1, wherein: the main chip is MPC5607, and the auxiliary chip is 9S12GN 32.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922401913.5U CN211349098U (en) | 2019-12-27 | 2019-12-27 | Vehicle control unit safety monitoring system based on instruction set monitoring |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201922401913.5U CN211349098U (en) | 2019-12-27 | 2019-12-27 | Vehicle control unit safety monitoring system based on instruction set monitoring |
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| CN211349098U true CN211349098U (en) | 2020-08-25 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113671928A (en) * | 2021-07-05 | 2021-11-19 | 浙江零跑科技股份有限公司 | Fault-tolerant type fault detection and protection method for controller of electric drive assembly |
| CN113859150A (en) * | 2021-09-28 | 2021-12-31 | 一汽解放汽车有限公司 | Vehicle control system |
| CN115877777A (en) * | 2023-01-30 | 2023-03-31 | 深圳市众鸿科技股份有限公司 | Intelligent cabin safety system and method based on one-chip multi-system |
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2019
- 2019-12-27 CN CN201922401913.5U patent/CN211349098U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113671928A (en) * | 2021-07-05 | 2021-11-19 | 浙江零跑科技股份有限公司 | Fault-tolerant type fault detection and protection method for controller of electric drive assembly |
| CN113859150A (en) * | 2021-09-28 | 2021-12-31 | 一汽解放汽车有限公司 | Vehicle control system |
| CN113859150B (en) * | 2021-09-28 | 2023-11-07 | 一汽解放汽车有限公司 | Whole vehicle control system |
| CN115877777A (en) * | 2023-01-30 | 2023-03-31 | 深圳市众鸿科技股份有限公司 | Intelligent cabin safety system and method based on one-chip multi-system |
| CN115877777B (en) * | 2023-01-30 | 2023-05-02 | 深圳市众鸿科技股份有限公司 | Intelligent cabin safety system and method based on one-core multi-system |
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