Finished automobile controller monitoring system and its implementing method

A vehicle controller and monitoring system technology, applied in the direction of comprehensive factory control, comprehensive factory control, electrical program control, etc., can solve problems such as paralysis, communication data blockage, inoperable vehicle control, etc., to improve safety and stability performance, reducing system security issues, and avoiding system crashes

Active Publication Date: 2009-01-07
SAIC MOTOR
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  • Summary
  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

The establishment of the traditional automobile "CAN" network is to connect all controllers through a bus. This method has a simple structure, but since all controller information transmission depends on a bus, the probability of "blocking" of communication data increases. And once a bus failure occurs, the controllers on the bus will not be able to work, resulting in "paralysis" of the vehicle control

Method used

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  • Finished automobile controller monitoring system and its implementing method
  • Finished automobile controller monitoring system and its implementing method
  • Finished automobile controller monitoring system and its implementing method

Examples

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Embodiment Construction

[0022] Such as figure 1 As shown, a vehicle controller monitoring system includes a peripheral controller and a vehicle controller 1, wherein the vehicle controller 1 includes a main CPU 2, a slave CPU 3 and a safety line monitoring circuit 4; the main CPU 2 Communicate with the slave CPU 3 through the SPI bus, the master CPU 2 and the slave CPU 3 are connected with the safety wire monitoring circuit 4 through the safety wire 5; the safety wire monitoring circuit 4 is directly connected with the peripheral controller through the safety wire 5, so The vehicle controller 1 is connected with the peripheral controller through the CAN bus. The peripheral controllers include a battery controller and a motor controller. The main CPU2 uses the ST10 single-chip microcomputer chip, and the slave CPU 3 uses the MC9S08 chip. The SPI bus is a high-speed, full-duplex, synchronous communication bus. The safety line monitoring circuit is composed of a capacitor, a resistor and an amplifier...

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Abstract

The invention provides a monitoring system with a double-CPU structure for a whole vehicle controller and an implement method thereof, and designs a safety line monitoring circuit. A master CPU is in charge of whole vehicle control. A slave CPU is in charge of monitoring of the master CPU. When the master CPU appears abnormal, the slave CPU can replace the master CPU in time, and make the whole vehicle system in a safe mode through the safety line, therefore, the reliability of the system is increased. The present invention has a beneficial effect that a slave CPU is added to greatly reduce system security questions caused by that programs of a master CPU lose control because of system interference; the present invention has another beneficial effect that a system crash question caused by CAN bus failure can be avoided by adding the safety line monitoring circuit in the whole vehicle controller and connecting the safety line monitoring circuit with a peripheral controller directly through the safety line.

Description

technical field [0001] The invention relates to the field of automobile controllers, in particular to a vehicle controller monitoring system and an implementation method thereof, which are suitable for a vehicle controller of a fuel cell vehicle or a vehicle controller of a hybrid electric vehicle. Background technique [0002] In fuel cell or hybrid electric vehicles, the vehicle controller is the core control unit in the development of new energy vehicles. The reliability and safety of the vehicle controller system are directly related to the safety performance of the vehicle. However, the vehicle controller on domestic new energy vehicles generally uses a single CPU to control the vehicle system. If the CPU program runs out of control due to external interference or other factors, it will directly lead to system safety problems and reduce system reliability. [0003] In addition, the vehicle controller and other controllers (motor controller or battery controller) general...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05B19/418
CPCY02P90/02
Inventor 张剑锋严洪江蒋新华俞开元李卓阳樊晓松
Owner SAIC MOTOR
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