Automated Parking Power-Off Monitoring for ECU Failure Alerts
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Solution Overview
Problem
Existing parking support devices may fail to switch the vehicle's power supply from ON to OFF due to malfunctions in the ECU or CAN abnormalities, leading to increased risks of theft and battery exhaustion.
Innovation Solution
A parking support device and mobile terminal system that includes a first control unit to perform parking support control, including automatic switching of the power supply from ON to OFF when the vehicle arrives at a target parking position, and to notify users of power-off abnormalities via the mobile terminal.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If automatic power-off control is implemented when the vehicle arrives at the target parking position, then energy consumption is reduced and security is improved, but system reliability deteriorates due to potential ECU malfunction or CAN abnormalities that prevent power-off
Solution Approach 1:
The system implements feedback by continuously monitoring whether the power supply state matches the expected state after automatic power-off control. The notification unit detects when the power supply remains ON despite the power-off command, and feeds this abnormality information back to the user through notification signals, enabling corrective action to prevent theft and battery exhaustion.
Solution Approach 2:
The system performs preliminary action by implementing automatic power-off control upon vehicle arrival at the target parking position. This proactive measure attempts to switch the power supply to OFF before the user manually intervenes, thereby reducing energy consumption and preventing the vehicle from being left in a vulnerable ON state.
2Loss of energy
If the power supply is automatically switched to OFF when the vehicle arrives at the target parking position, then battery exhaustion is prevented, but the risk of theft increases if the power-off control fails
Solution Approach 1:
The notification unit provides feedback monitoring to detect when automatic power-off control fails due to ECU malfunction or CAN abnormalities. By continuously checking whether the power supply state matches the expected OFF state, the system generates notification signals to alert users of the abnormality, enabling them to take corrective measures to prevent theft while maintaining battery conservation benefits.
Solution Approach 2:
The system implements preliminary automatic power-off control to prevent battery exhaustion upon vehicle arrival. This proactive power-off action reduces energy loss, while the accompanying notification mechanism provides a safety net to address potential theft risks if the power-off fails.
3Object-affected harmful factors
If the first control unit monitors power-off status to detect abnormalities, then vehicle security is improved, but device complexity increases
Solution Approach 1:
The first control unit performs multiple functions: it executes automatic power-off control, monitors power-off status, detects abnormalities, and generates notification signals. By consolidating these diverse functions into a single control unit, the system improves vehicle security without proportionally increasing device complexity, as the control unit leverages its existing computational resources for monitoring and detection tasks.
4Loss of information
If notification signals are transmitted to the user's mobile terminal when power-off abnormality is detected, then user awareness is improved, but communication energy consumption increases
Solution Approach 1:
The system performs preliminary notification by transmitting alert signals to the user's mobile terminal as soon as a power-off abnormality is detected. This proactive notification ensures timely user awareness, enabling rapid response to prevent theft or battery exhaustion, while the communication energy consumption is minimized by activating transmission only when abnormalities occur rather than continuously.
Data Source
AI summary
A parking ECU performs parking support control including power-off control for automatically switching a power supply of a vehicle from an ON state to an OFF state when an arrival condition that the vehicle arrives at a target parking position is satisfied, and performs abnormality notification for notifying a user of the vehicle that a power-off abnormality in which the power supply is not switched to the OFF state has occurred when the parking ECU is not switched to a non-operating state in a period from starting of the power-off control to elapse of a predetermined power-off delay time.