Electronic Shifter Mismatch Correction via Automatic Position Mode
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Solution Overview
Problem
Electronic shifters often fail to match the vehicle's actual transmission gear, particularly when the driver attempts gear changes that the vehicle is programmed to prevent, leading to potential unintended conditions or transmission damage.
Innovation Solution
A method and apparatus that detect mismatches between the electronic shifter position and the vehicle's actual transmission gear, utilizing an automatic position correction mode (APCM) to lock the shifting mechanism, allow manual adjustment if necessary, and initiate automatic correction when appropriate, ensuring the e-shifter returns to a normal operating mode.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the vehicle is programmed to prevent certain gear changes (e.g., preventing reverse from drive at high speed), then transmission safety is improved, but the electronic shifter position will not match the actual transmission gear
Solution Approach 1:
The system continuously monitors and compares the electronic shifter position with the actual transmission gear state, detecting mismatches between the selected gear and the actual engaged gear. This feedback mechanism triggers correction protocols to realign the displayed position with the actual gear state.
Solution Approach 2:
The system proactively prevents gear mismatches by implementing correction mechanisms before the mismatched state can cause problems. When a mismatch is detected, the system automatically initiates correction sequences to realign the shifter position with the actual gear state.
2Ease of operation
If the electronic shifter allows free manipulation without restrictions, then ease of operation is improved, but unintended gear changes or transmission damage may occur
Solution Approach 1:
The system applies pre-programmed restrictions that prevent certain gear changes under specific conditions (e.g., preventing reverse engagement from drive at high speeds). These preventive measures are implemented before the harmful action can occur, blocking unsafe gear transitions while allowing normal operation.
Solution Approach 2:
The system monitors gear selection attempts and compares them against safety criteria, providing feedback that blocks unsafe gear changes while permitting valid ones. This feedback loop ensures operational safety without unnecessarily restricting legitimate driver intentions.
3Loss of information
If the electronic shifter implements multi-position stable settings, then driver's ability to determine selected gear is improved, but the complexity of detecting and correcting mismatches increases
Solution Approach 1:
The system implements continuous feedback monitoring that compares the stable multi-position shifter settings with the actual transmission gear state. This feedback mechanism detects mismatches and triggers automatic correction sequences, managing the complexity through systematic monitoring and correction protocols.
Solution Approach 2:
The system performs self-correction of mismatched positions through automatic correction sequences. When a mismatch is detected, the system autonomously initiates correction protocols to realign the shifter position with the actual gear state, reducing the need for external intervention.
Data Source
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AI summary
A method and apparatus for detecting and correcting mismatches between an electronic shifter position and a vehicle's actual transmission gear. The method and system implement a correction scheme that may initially set a period for manual correction, if possible, then initiate automatic correction if correction is required.