Upgrading method based on on-board OTA terminal fault-tolerance design

Abstract

The invention discloses an upgrading method based on on-board OTA terminal fault-tolerance design. The upgrading method comprises steps that a main micro-processing unit MCU and a slave micro-processing unit MCU are used to run the same program, and are used to receive data transmitted by a wireless communication module via an SPI communication interface at the same time; mutual-data verificationis carried out by the SPI communication interface between the main micro-processing unit MCU and the slave micro-processing unit MCU, and then the normal data communication of the SPI communication interface is guaranteed; the main micro-processing unit MCU and the slave micro-processing unit MCU are used to carry out internal judgement of issued CAN data packets, and are used to determine that the main micro-processing unit MCU is used to transmit upgrading data packets to an internal electronic control unit ECU by a main CAN transceiver, and the slave micro-processing unit MCU is used to monitor the transmitted data. The upgrading method based on the on-board OTA terminal fault-tolerance design is advantageous in that by adopting an isomorphic double-core architecture, the fault-tolerance design related to sudden faults occurred during the working of the on-board OTA terminal is realized, and then the accuracy of the firmware upgrading of the internal electronic control unit ECU is guaranteed.

Description

technical field [0001] The invention relates to the field of upgrading vehicle-mounted electronic control systems, in particular to an upgrading method based on the fault-tolerant design of vehicle-mounted OTA terminals. Background technique [0002] During the entire vehicle life cycle, the software upgrade of the on-board electronic control system may be repeated or even repeated. In addition to some upgrades to improve customer satisfaction (such as in-vehicle infotainment systems, etc.), more important safety upgrades may involve automotive The traditional solution of urgently notifying car owners to upgrade at dealerships often means inefficiency and high cost, and car companies may also bear the price of huge loss of brand value. The upgrade of the on-board electronic control system requires that the transmitted data be accurate and not affect the driver's safe driving. Application No. 201310184686.X, the Chinese invention with the patent name "Vehicle Terminal Remote...

AI Technical Summary

Problems solved by technology

Application No. 201310184686.X, the Chinese invention with the patent name "Vehicle Terminal Remote Upgrade Method and Vehicle Networking System" proposes a vehicle terminal remote upgrade method, which is limited to the vehicle terminal itself upgrade, and cannot implement other vehicle electronic control systems Upgrade, and the sudden failure of the upgrade process cannot be fault-tolerant to ensure the smooth progress of the upgrade

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