Vehicle Control Interface for Reliable Wheel Direction Detection
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing autonomous driving systems face challenges in accurately determining the rotation direction of vehicle wheels, leading to potential erroneous detection and reduced accuracy in autonomous driving control.
Innovation Solution
A vehicle control interface is introduced to interface between the vehicle platform and the autonomous driving system, which fixes the rotation direction of the wheel by consecutively receiving pulses from the wheel speed sensor and provides appropriate signals to the autonomous driving system, such as 'Forward', 'Reverse', or 'Invalid value', to ensure accurate wheel direction detection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If the rotation direction of the wheel is fixed each time the vehicle platform receives a pulse from the wheel speed sensor, then the responsiveness of rotation direction detection is improved, but erroneous detection of the rotation direction occurs
Solution Approach 1:
The system requires two consecutive pulses in the same direction before fixing the rotation direction, which is a preliminary verification action that prevents premature or erroneous detection while maintaining responsive operation
2Adaptability or versatility
If the autonomous driving system is externally attached to the vehicle main body, then the system architecture flexibility is improved, but the accuracy of vehicle state information provided to the autonomous driving system deteriorates
Solution Approach 1:
The vehicle control interface acts as an intermediary between the vehicle main body and the autonomous driving system, ensuring accurate transmission of rotation direction information while maintaining the external attachment architecture
Data Source
Figure 1
Figure 2
Figure 3
AI summary
When a vehicle control interface receives information indicating "Forward" from a VP, the vehicle control interface sets a value 0 in a signal indicating a rotation direction of a wheel. When the vehicle control interface receives information indicating "Reverse" from the VP, the vehicle control interface sets a value 1 in the signal indicating the rotation direction of the wheel. When the vehicle control interface receives information indicating "Invalid value" from the VP, the vehicle control interface sets a value 3 in the signal indicating the rotation direction of the wheel. The vehicle control interface provides the signal indicating the rotation direction of the wheel to an ADK.