ECU Update Restriction Control for Diagnostic Tool Interference
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing vehicle control systems face interference during ECU program updates when commercially available scanning tools are connected, potentially disrupting communication between ECUs and preventing successful updates.
Innovation Solution
The control system includes a restriction control unit that detects the connection of diagnosis apparatuses and temporarily restricts or suspends ECU program updates, ensuring that updates are only performed when these tools are disconnected, thereby preventing interference and ensuring successful updates.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If ECU program updates are performed continuously without restriction, then update speed and productivity are improved, but interference from diagnosis apparatus causes update failures and reduces reliability
Solution Approach 1:
The control system performs preliminary detection of diagnosis apparatus connection status before initiating ECU program updates. By checking whether a diagnosis apparatus is connected in advance and restricting updates when connection is detected, the system prevents interference-related update failures before they occur, ensuring both update speed and success rate
2Reliability
If diagnosis apparatus connection is detected and update is restricted, then update interference is prevented and reliability is improved, but update time increases and productivity decreases
Solution Approach 1:
The control system dynamically adjusts update execution based on real-time diagnosis apparatus connection status. When no diagnosis apparatus is connected, updates proceed normally without restriction. When connection is detected, updates are restricted. This dynamic adaptation ensures updates are performed as quickly as possible under safe conditions, minimizing update time while maintaining high success rate
3Reliability
If update restriction control is implemented, then interference from diagnosis apparatus is prevented and update reliability is improved, but system complexity increases
Solution Approach 1:
The control system implements a feedback mechanism where the update control unit continuously monitors diagnosis apparatus connection status and adjusts update execution accordingly. The system detects connection status, determines whether to restrict updates based on this feedback, and executes appropriate control actions. This feedback-based approach provides a systematic yet relatively simple method to prevent interference while maintaining update reliability
Data Source
AI summary
A control system includes a movable object control unit configured to control a movable object, an update control unit configured to control a program update of the movable object control unit, and a communication path that is a path for the movable object control unit and the update control unit to perform an information communication, a path that is connected to an external diagnosis apparatus configured to perform a diagnosis of the movable object control unit and used for transmitting information of the movable object to the external diagnosis apparatus and the communication path are at least partially in common, and the control system includes a restriction control unit configured to restrict, when the program update and the diagnosis of the movable object control unit by the external diagnosis apparatus are to be performed, one of the diagnosis by the external diagnosis apparatus and the program update.