Vehicle dual control chip system and its auxiliary control chip program update method

An auxiliary control and chip system technology, applied in the automotive field, can solve the problem of increasing the number of CAN network nodes, and achieve the effect of eliminating potential safety hazards

Active Publication Date: 2018-09-07
LIANCHUANG AUTOMOBILE ELECTRONICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the main control chip has already used a CAN driver to communicate with the CAN network of the vehicle; the disadvantage of this method is that two CAN drivers are required, which increases the number of CAN network nodes

Method used

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  • Vehicle dual control chip system and its auxiliary control chip program update method
  • Vehicle dual control chip system and its auxiliary control chip program update method
  • Vehicle dual control chip system and its auxiliary control chip program update method

Examples

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Embodiment Construction

[0052] Such as image 3 As shown, an embodiment of the vehicle-mounted dual control chip system of the present invention includes:

[0053] The upper computer analyzes the target file to be downloaded, converts the binary file into CAN message data and transmits it to the CAN network;

[0054] CAN communication equipment, send and read message data on the CAN network to the main control chip; vehicle CAN network, vehicle ECU as the node of the vehicle CAN network, can send and read CAN message data;

[0055] The main control chip converts the specific CAN message data of the vehicle CAN network and the SPI communication data; the SPI communication line, the main control chip performs digital communication with the auxiliary control chip through the SPI communication line;

[0056] Auxiliary control chip, which has a pre-programmed BOOT program; and

[0057] The main control chip hardware reset auxiliary control chip circuit connected between the IO control pin of the main co...

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PUM

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Abstract

The present invention discloses an auxiliary control chip program update method for a vehicle onboard double-control-chip system. The method comprises: connecting an IO control pin of a main control chip to a reset pin of an auxiliary MCU; setting a communication ID identification number for communication between an upper computer and a lower computer; defining a ROM area where the BOOT and the program of the auxiliary control chip are located; downloading a to-be-updated program to the corresponding ROM area; integrating transfer functions of a CAN communication tool and an SPI communication tool of the main control chip into ESP system functions; connecting the upper computer with a whole vehicle CAN network by using the CAN communication tool; ensuring that a session response between the upper computer and the lower computer and a key checking mechanism meet a whole vehicle CAN network standard; an auxiliary control chip program file being a standard S19 format file; and performing, by the main control chip, data transfer processing, upper computer processing, and auxiliary control chip BOOT processing. The present invention further discloses a vehicle onboard double-control-chip system. According to the update method and system provided by the present invention, existing hardware resources are used without adding extra costs and without increasing complexity of whole vehicle network design, thereby facilitating operations of maintainers.

Description

technical field [0001] The invention relates to the field of automobiles, in particular to a vehicle-mounted dual control chip system (ECU). The invention also relates to a method for updating programs of an auxiliary control chip (MCU) in a vehicle-mounted dual control chip system (ECU). Background technique [0002] The vehicle dual control chip architecture system (ECU) is realized by the main control chip (MCU), auxiliary control chip (MCU) and digital communication hardware module. Among them, the role of the auxiliary control chip is mainly to monitor the working status of the main control chip and to perform safety redundancy detection on the collection of some key information. When the function of the main control chip or the functional architecture of the ECU changes, it is often required to be able to upgrade the application program (APP) of the auxiliary control chip online in the vehicle environment to adapt to the change of the system functional architecture. ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F8/65
Inventor 金灿龙张善田佰辉张琼琰杨化方刘金行
Owner LIANCHUANG AUTOMOBILE ELECTRONICS
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