Vehicle Control Interface for Ambiguous Moving Direction Detection
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing autonomous driving systems lack accurate determination of a vehicle's moving direction, which is crucial for precise control and safe operation, especially when wheel rotation directions are ambiguous or the vehicle is stationary.
Innovation Solution
A vehicle control interface determines the moving direction of the vehicle based on the majority rule of wheel rotation directions and provides signals indicating 'Forward', 'Reverse', 'Standstill', or 'Undefined' to the autonomous driving system, ensuring accurate communication of the vehicle's state.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If wheel rotation directions are used to determine vehicle moving direction, then the autonomous driving system can obtain motion information, but the accuracy is insufficient when wheel rotation directions are ambiguous or the vehicle is stationary
Solution Approach 1:
The patent applies majority rule voting among multiple wheel encoders to determine vehicle moving direction. Instead of relying on a single wheel's rotation signal, the system collects rotation direction data from multiple wheels and determines the vehicle's moving direction based on the majority vote. This partial action approach (using only the majority consensus rather than all individual signals) resolves ambiguous cases where some wheels may provide conflicting or unreliable signals, thereby improving measurement precision and reliability under ambiguous conditions.
2Adaptability or versatility
If the autonomous driving system is externally attached to the vehicle main body, then system integration is achieved, but accurate communication of vehicle state signals is required
Solution Approach 1:
The patent implements a feedback mechanism where the vehicle control interface continuously monitors wheel rotation directions from multiple encoders and provides corrected moving direction signals to the autonomous driving system. The system compares individual wheel rotation signals, identifies discrepancies or ambiguous states, and generates accurate moving direction feedback based on majority consensus. This feedback loop ensures that the externally attached autonomous driving system receives reliable vehicle state information, preventing information loss despite the distributed system architecture.
Data Source
Figure 1
Figure 2
Figure 3
AI summary
When a vehicle control interface (110) receives information indicating "Standstill" from a VP (120), the vehicle control interface (110) sets a value 2 in a signal indicating an actual moving direction (a signal indicating a moving direction of a vehicle (10)). When the number of wheels rotating in a forward rotation direction is larger than two, the vehicle control interface (110) sets a value 0 in the signal indicating the actual moving direction. When the number of wheels rotating in a reverse rotation direction is larger than two, the vehicle control interface (110) sets a value 1 in the signal indicating the actual moving direction. When the number of wheels rotating in the forward rotation direction is equal to the number of wheels rotating in the reverse rotation direction, the vehicle control interface (110) sets a value 3 in the signal indicating the actual moving direction. The vehicle control interface (110) provides the signal indicating the actual moving direction to an ADK (200).