Method for realizing ECU updating based on distributed memory management

Abstract

The invention relates to a method for realizing ECU (electronic control unit) updating based on distributed memory management, which comprises the following steps that a TCU (terminal control unit) isset as a main storage unit, each ECU is respectively set as an auxiliary storage unit, and nonvolatile memories in the main storage unit and the auxiliary storage unit are respectively divided into aplurality of storage modules; available storage modules are obtained and related records are generated; the main storage unit downloads the upgrading software through the server, and selects a plurality of available storage modules to jointly complete storage of the upgrading software; when the specified ECU needs to be updated, the selected storage module can be read by the ECU corresponding tothe selected storage module, and a reading result is transmitted to the specified ECU; and the specified ECU acquires the reading result and buffers and refreshes the reading result to finish upgrading. According to the method, the downloaded upgrading software is stored by using the nonvolatile memory in the vehicle-mounted ECU, so that the requirement on TCU storage resources is reduced, the production cost is reduced, and the ECU updating speed is increased.

Description

technical field [0001] The invention relates to a remote OTA upgrade technology for each ECU software of a passenger car, in particular to a method for realizing ECU update based on distributed memory management. Background technique [0002] With the continuous improvement of people's requirements for vehicle power, safety and comfort, the number of electronic control units (Electronic control unit, ECU) has increased, and the individualization of ECU functions has also been continuously upgraded and replaced. Throughout the vehicle life cycle, ECU software upgrades are relatively frequent, and even need to be repeated. ECU software upgrade can not only improve customer satisfaction, but also improve vehicle driving safety, which is very necessary to improve customer satisfaction. The traditional ECU software upgrade method mainly relies on the vehicle dealer to complete, and the vehicle dealer will issue a notice to the vehicle owner after the manufacturer releases the so...

AI Technical Summary

Problems solved by technology

The storage and transfer mode of this software upgrade package requires that the TCU must be able to provide a large amount of non-volatile memory resources, which increases the production cost of the TCU to a certain extent, and is not conducive to improving the update speed of each ECU, making users Quality of experience drops

Most importantly, for a specific ECU installed in a car, the manufacturer generally requires the ECU supplier to reserve a certain amount of non-volatile memory in the ECU, which is common in the industry, and these are The reserved non-volatile memory is basically not used in the later stage, resulting in a certain waste of resources

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