Fuel Cell Vehicle Lid Sensor Defect Control Method
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Solution Overview
Problem
Fuel cell vehicles are incorrectly prohibited from moving due to a persistent open signal from a lid sensor defect, even when the lid door is actually closed, leading to unnecessary restrictions on vehicle operation.
Innovation Solution
A control method that allows the vehicle to move by detecting a predetermined special operation, such as repeated starter switch presses and notifications, when the lid sensor indicates the lid door is open but is actually closed, thereby overcoming the sensor defect and enabling vehicle movement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the lid sensor continuously outputs an open signal due to a defect, then the vehicle is prohibited from moving, but the lid door is actually closed causing unnecessary restriction
Solution Approach 1:
The system performs preliminary detection of sensor defects by monitoring signal consistency over time. When the lid sensor continuously outputs an open signal beyond a predetermined threshold, the system proactively identifies this as a defect condition and triggers the special operation mode, preventing unnecessary vehicle restrictions before they occur during normal operation
Solution Approach 2:
The system implements feedback through special operation processing loops that require repeated starter switch presses. This feedback mechanism allows the driver to actively confirm the sensor defect condition, and the system responds by eliminating the unnecessary movement prohibition while maintaining safety through controlled operation modes
2Object-affected harmful factors
If the system prohibits vehicle movement when lid sensor indicates open, then safety is improved, but false prohibitions occur due to sensor defects
Solution Approach 1:
The system performs preliminary detection of sensor defects by monitoring signal consistency over time. When the lid sensor continuously outputs an open signal beyond a predetermined threshold, the system proactively identifies this as a defect condition and triggers the special operation mode, preventing unnecessary vehicle restrictions before they occur during normal operation
Solution Approach 2:
The system dynamically adjusts its response based on the duration and consistency of the sensor signal. For transient signals, normal safety prohibition applies. For persistent signals exceeding the predetermined threshold, the system transitions to a special operation mode that eliminates false prohibitions while maintaining appropriate safety controls
3Reliability
If a special operation processing loop is implemented, then false sensor signals are corrected, but system complexity increases
Solution Approach 1:
The system uses existing vehicle components (starter switch, notification devices) to implement the special operation processing loop. The driver performs repeated starter switch presses to activate the defect correction mode, and the system self-manages the transition by monitoring the operation count and automatically eliminating false prohibitions when the threshold is reached, without requiring additional hardware or complex control logic
Data Source
AI summary
An object is to allow for the move of a vehicle even in the event of an abnormality in a lid sensor. A control method of a vehicle with a fuel cell mounted thereon comprises: (a) if a signal of a lid sensor that is configured to detect opening and closing of a lid door for a gas filler port of the vehicle indicates that the lid door is open, then prohibiting move of the vehicle; and (b) if it is judged that the lid sensor has a defect or if a predetermined special operation is performed, then eliminating prohibition of the move of the vehicle despite that the signal of the lid sensor indicates that the lid door is open.