Vehicle ECU Update Control for Selective Activation and Diagnosis Pause
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Solution Overview
Problem
Existing vehicle electronic control systems face inefficiencies in updating data, leading to unnecessary power consumption and operational abnormalities due to improper activation and diagnosis procedures during data downloads.
Innovation Solution
An operation management device and method that includes an update management unit to prohibit failure diagnosis during data writing, an activation management unit to manage activation configurations, and an activation unit to selectively activate electronic control devices, ensuring efficient data download by minimizing unnecessary power usage and abnormality detection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If all electronic control devices are activated according to normal procedures during data download, then communication reliability is improved, but power consumption increases unnecessarily
Solution Approach 1:
The system segments the electronic control devices into two groups: those that need to be activated for the update and those that don't. The operation management device identifies and activates only the necessary target device and intermediate devices required for the update path, while keeping other devices inactive. This segmentation resolves the contradiction by maintaining communication reliability for the update path while avoiding unnecessary power consumption from activating all devices.
2Use of energy by moving object
If only necessary electronic control devices are activated during data download, then power consumption is reduced, but operational abnormality detection fails
Solution Approach 1:
The system performs preliminary actions by temporarily activating only the necessary devices for the update path, completing the data transfer, and then deactivating them. The operation management device proactively manages the activation and deactivation timing, ensuring that failure diagnosis is suspended only during the necessary update window. This preliminary action approach reduces power consumption while maintaining operational abnormality detection capability through controlled suspension and resumption of diagnosis functions.
3Reliability
If failure diagnosis is executed during data writing, then operational abnormality is detected, but unnecessary abnormality detection occurs
Solution Approach 1:
The system applies preliminary anti-action by proactively suspending the failure diagnosis function before data writing begins and resuming it after data writing completes. The operation management device anticipates that data writing operations may trigger false abnormality detections, so it preemptively disables the diagnosis function during this period. This prevents the loss of information in the form of false abnormality detections while maintaining reliable operational monitoring before and after the update process.
Data Source
AI summary
An operation management device for managing operation of a plurality of electronic control devices installed on a vehicle includes: an update management unit configured to: receive a download instruction to download updated data from an external device; and deliver the received updated data to an electronic control device and instruct the electronic control device to write the updated data, the updated data including an updated program for the electronic control device, the electronic control device being at least one of the electronic control devices, the electronic control device being a target device for downloading the updated data; and a failure diagnosis unit configured to execute failure diagnosis for the electronic control devices, wherein when the update management unit instructs any of the electronic control devices to write the updated data, the update management unit prohibits the failure diagnosis unit from executing the failure diagnosis.