In-Vehicle Drive Diagnosis with Inhibition Event Feedback
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing in-vehicle systems lack efficient diagnosis processing for driving parts, leading to incomplete or interrupted diagnostic procedures due to inhibition events.
Innovation Solution
An in-vehicle device with a control unit that detects inhibition events during diagnosis processing and outputs a detection result notification to the in-vehicle ECU, including a communication unit to communicate with the ECU, allowing efficient countermeasures even when diagnosis processing is interrupted.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If diagnosis processing is performed continuously, then diagnostic completeness is improved, but system reliability deteriorates due to inhibition events causing interruptions
Solution Approach 1:
The control unit implements a feedback mechanism by detecting inhibition events during diagnosis processing and notifying the in-vehicle ECU. This feedback loop allows the system to recognize when diagnosis is interrupted and trigger appropriate countermeasures, thereby maintaining diagnostic completeness while managing system reliability through active monitoring and response.
Solution Approach 2:
The system performs preliminary action by detecting inhibition events before they cause complete diagnostic failure. The control unit monitors for inhibition events during diagnosis processing and proactively notifies the ECU, enabling the system to take corrective measures before the diagnostic process is fully compromised, thus maintaining both completeness and reliability.
2Stability of the object's composition
If diagnosis processing is interrupted to handle inhibition events, then system stability is improved, but diagnostic efficiency deteriorates
Solution Approach 1:
The feedback mechanism enables the system to efficiently handle interruptions by immediately notifying the ECU when an inhibition event occurs. This allows the system to quickly resume diagnosis processing after handling the inhibition event, minimizing the impact on diagnostic efficiency while maintaining system stability through structured interruption handling.
Solution Approach 2:
The system employs periodic action by implementing structured interruption and resumption of diagnosis processing. When inhibition events occur, the system periodically pauses to handle them through ECU notification, then resumes the diagnostic process, thereby maintaining stability while minimizing overall diagnostic time through organized periodic interruptions rather than continuous disruption.
3Reliability
If inhibition events are detected and notified, then countermeasure effectiveness is improved, but communication overhead increases
Solution Approach 1:
The system extracts only the essential information needed for countermeasures by notifying the ECU specifically about inhibition events during diagnosis processing. This selective notification approach communicates only the critical data required for effective countermeasures, minimizing communication overhead while maintaining countermeasure effectiveness by focusing on essential information transfer.
Data Source
Figure 1
Figure 2
Figure 3
AI summary
An in-vehicle device is an in-vehicle device mounted on a vehicle and comprising a driving unit, the device including: a control unit controlling the driving unit; and a communication unit for communicating with an in-vehicle ECU to be mounted on the vehicle, in which when an inhibition event for inhibiting diagnosis processing of the driving unit is detected at the time of performing the diagnosis processing, the control unit outputs a detection result notification indicating that the inhibition event is detected to the in-vehicle ECU through the communication unit.