Vehicular Display Gear State Verification
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Solution Overview
Problem
Drive-by-wire vehicle transmission systems face issues with incorrect gear state display due to reliance on sensors and logic, leading to potential operator confusion and incorrect operation.
Innovation Solution
A display system that receives signals from both the electronic control system and a transmission sensor, independently verifying the gear state and presenting distinct visual images to alert operators of potential errors through contrasting colors or patterns when signals indicate different gear states.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Extent of automation
If the system relies exclusively on sensors and logic to determine transmission state, then automation is improved, but reliability deteriorates due to potential incorrect displayed gear location
Solution Approach 1:
The system implements feedback by continuously monitoring the drive-by-wire selector position and comparing it with the actual transmission gear state through sensors. When a discrepancy is detected between the commanded gear and actual gear, the system provides visual feedback to alert the operator, ensuring reliable operation despite automation.
2Ease of operation
If the drive-by-wire selector returns to default position after gear change, then ease of operation is improved, but information reliability worsens because selector position no longer reflects current gear
Solution Approach 1:
The system introduces an intermediary visual display element that mediates between the drive-by-wire selector and the actual transmission state. This visual indicator independently shows the current gear position, allowing the selector to return to default while maintaining accurate gear state information for the operator.
3Device complexity
If visual display shows only commanded gear state, then device complexity is reduced, but measurement precision deteriorates as it cannot detect actual gear state discrepancies
Solution Approach 1:
The system merges multiple information sources by combining the commanded gear state from the electronic control system with the actual gear state from independent sensors. This integrated approach maintains relatively simple display architecture while achieving high measurement precision through multi-source verification.
Data Source
AI summary
An information presentation system for a vehicle is provided. The vehicle comprises a transmission operable in a plurality of gear states. The system comprises a sensor adapted to detect a gear state of the transmission, an electronic control system adapted to operate the transmission and to detect a gear state of the transmission, and a display device coupled to the sensor and to the electronic control system. The display device is adapted to receive a first signal indicating the gear state of the transmission, to receive a second signal indicating the gear state of the transmission, and to adjust an arrangement of visual elements in a manner influenced by the first and second signals.