Vehicle Sensor Switching with Coordinate Alignment Correction
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Solution Overview
Problem
Existing vehicle positioning systems using multiple sensors face instability due to measurement errors, leading to unpredictable vehicle movement when switching between sensors for position and orientation estimation.
Innovation Solution
An apparatus and method that includes a first and second acquisition unit for estimating vehicle position and orientation using different sensors, a selection unit to prioritize one sensor's data, a difference acquisition unit to calculate discrepancies, and a correction unit to align the data in a common coordinate system, ensuring stable vehicle movement by correcting sensor discrepancies.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If multiple sensors are used to estimate vehicle position, then position estimation accuracy is improved, but measurement errors cause coordinate system mismatches leading to unstable vehicle movement
Solution Approach 1:
The system continuously monitors the difference between coordinate systems of multiple sensors and applies real-time correction. The correction unit adjusts sensor data based on detected coordinate mismatches, creating a feedback loop that maintains consistency across sensor inputs and prevents unstable vehicle movement
Solution Approach 2:
A coordinate system conversion unit acts as an intermediary between multiple sensors with different coordinate systems. This intermediary component transforms sensor data into a unified coordinate system, enabling consistent position estimation without direct conflicts between mismatched sensor coordinate frames
2Productivity
If sensor data is switched to maintain vehicle control, then continuous position estimation is maintained, but coordinate system differences cause unexpected directional changes
Solution Approach 1:
The system performs preliminary coordinate system alignment by detecting and correcting coordinate mismatches before sensor data switching occurs. This advance correction ensures that when sensors are switched, their data is already aligned to the same coordinate system, preventing unexpected directional changes
Solution Approach 2:
The correction unit continuously monitors coordinate system alignment and applies real-time adjustments before sensor switching. This feedback mechanism ensures that coordinate consistency is maintained across sensor transitions, preserving vehicle directional stability
Data Source
AI summary
Difference information between a first element of a vehicle estimated in accordance with measurement information acquired by a first sensor and a second element of the vehicle acquired simultaneously with the first element is acquired. The difference information is according to the same coordinate system as the first element and the second element. An element for controlling movement of the vehicle is selected from the first element and the second element. When the element for controlling movement of the vehicle is switched to another element of the first element and the second element, the other element selected is corrected by using the difference information.