Vehicle Suspension Control for Display Readability
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Solution Overview
Problem
Current adaptive seat suspension systems in motor vehicles can impair the ability of drivers and passengers to read vehicle gauges and displays due to fluctuations in suspension, especially in bumpy conditions or high speeds, leading to reduced readability of information.
Innovation Solution
A motor vehicle system that includes a display unit, a personnel site, a frame, and a suspension system, where a control system determines the user's gaze point and adjusts suspension characteristics to synchronize the gaze point with the display unit's displacement, reducing fluctuations and improving readability by generating a control signal to the suspension system when a phase difference exceeds a threshold.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If adaptive seat suspension is activated to improve comfort, then suspension comfort is improved, but readability of display information deteriorates
Solution Approach 1:
The system uses eye-tracking technology to continuously monitor the user's gaze point on the display and feeds this information back to the suspension control system. When the gaze point fluctuates beyond a threshold, the system automatically adjusts suspension characteristics to stabilize the display position relative to the user's line of sight, thereby maintaining readability while preserving comfort.
Solution Approach 2:
The suspension system dynamically adjusts its characteristics (such as damping coefficients or stiffness) in real-time based on the user's gaze behavior and display position. This dynamic adaptation allows the system to optimize both comfort and readability according to current operating conditions, rather than maintaining fixed suspension parameters.
2Loss of information
If suspension characteristics are adjusted to stabilize gaze point, then readability is improved, but suspension comfort deteriorates
Solution Approach 1:
The system applies suspension adjustment only when necessary - specifically when the gaze point fluctuation exceeds a predetermined threshold. This partial action approach means the suspension operates in comfort mode most of the time, and only intervenes with stabilization when readability is compromised, thus minimizing the impact on overall comfort while ensuring information accessibility when needed.
3Loss of information
If eye tracking and suspension control are implemented, then information acquisition is enhanced, but device complexity increases
Solution Approach 1:
The control system serves multiple functions: it processes eye-tracking data, monitors display position, determines gaze point fluctuations, and controls suspension characteristics. By making the control system multi-functional, the patent avoids adding separate dedicated systems for each function, thereby enhancing information acquisition capabilities while limiting the increase in overall device complexity through functional integration.
Data Source
AI summary
A display unit in a motor vehicle presents information to a first user located in a personnel site. A frame carries the personnel site and a suspension system between the frame and the personnel site has at least one adjustable suspension characteristic. While the motor vehicle is being operated, a control system repeatedly determines a first gaze point of the first user on the display unit. Variations in a position for the first gaze point over time are analyzed; and in response thereto, the control system generates a first control signal to the suspension system so as to reduce a fluctuation of the position for the first gaze point, if a repositioning of the first gaze point is out of synchronization with a displacement of the display unit.