Accelerometer Display Rotation Heading Correction
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Solution Overview
Problem
Existing vehicle imager systems fail to accurately determine the vehicle's heading and detect approaching objects due to the display device's orientation relative to the vehicle's direction, leading to inaccurate navigation and object detection.
Innovation Solution
A system comprising an accelerometer, a compass, and a controller that calculates the display device's rotation angle to adjust the compass heading, allowing for accurate vehicle heading determination and object detection by identifying characteristics in image data based on the rotation angle.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the display device is mounted at a fixed orientation in the vehicle, then the manufacturing and installation process is simplified, but the system cannot accurately determine vehicle heading when the display orientation differs from the vehicle forward direction
Solution Approach 1:
The system dynamically adjusts the compass heading based on the display device's rotation angle. The controller receives rotation angle information from the accelerometer and dynamically recalculates the compass heading to account for the display's orientation relative to the vehicle's forward direction, enabling accurate heading determination regardless of display mounting orientation
Solution Approach 2:
The system changes the reference parameter (compass heading) based on the display device's orientation angle. By calculating the rotation angle of the display relative to the vehicle forward direction and adjusting the compass heading accordingly, the system adapts to different display mounting configurations while maintaining measurement accuracy
2Reliability
If the display device orientation is not considered, then the system design is simpler, but object detection accuracy deteriorates due to incorrect heading information
Solution Approach 1:
The system uses feedback from the accelerometer to determine the display device's rotation angle and feeds this information back to the controller. The controller then adjusts the compass heading based on this feedback, creating a closed-loop system that ensures accurate object detection by continuously aligning the heading information with the actual display orientation
Solution Approach 2:
The rotation angle calculation serves as an intermediary parameter that bridges the display device orientation and the compass heading. By introducing this intermediate calculation step, the system translates the physical orientation of the display into the appropriate heading correction, enabling accurate object detection without requiring direct mechanical coupling between components
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The system provides accurate vehicle heading information and enhances object detection by correcting compass headings and identifying key features in the vehicle's field of view, improving navigation and reducing manufacturing errors by accounting for display device orientation.
Implementation Method 1
The accelerometer is operable to measure a forward acceleration of the vehicle in the direction of a forward vector
Data Source
AI summary
A driver assist system incorporated in a display device is disclosed. The system comprises an accelerometer and a controller in communication with the accelerometer. The controller is configured to receive at least one acceleration signal from the accelerometer and calculate a direction of rotation of the display device. The direction of rotation is utilized by the controller to calculate a drive side of the vehicle.