Sensor-Guided Headrest Adjustment for Image Fusion Comfort
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Solution Overview
Problem
In computer-assisted systems, poorly adjusted headrests can cause operator discomfort and lead to unsatisfactory views of images, resulting in frustration and eye fatigue due to improper image fusion.
Innovation Solution
A computer-assisted system with a display unit, a headrest coupled to the display unit, an actuator to move the headrest, and a control unit that uses head-input sensors and system data to determine and command the necessary motion for ergonomic adjustment, ensuring optimal positioning and comfort for the operator.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the headrest is manually adjusted to a fixed position, then the device complexity is reduced, but the operator comfort and image fusion quality deteriorate when the initial position is incorrect
Solution Approach 1:
The headrest is transformed from a static fixed-position component to a dynamic adjustable component that can move in response to operator input. The actuator enables the headrest to dynamically adapt its position based on real-time sensor feedback, resolving the contradiction between simplicity and comfort by automating the adjustment process.
Solution Approach 2:
A sensor system detects operator head position and provides feedback to the control system, which then commands the actuator to adjust the headrest position accordingly. This closed-loop feedback mechanism ensures the headrest automatically achieves the correct position for optimal comfort and image fusion without requiring manual trial-and-error adjustment.
2Ease of operation
If the headrest is made manually adjustable, then the ease of operation improves, but the device complexity and time required for adjustment increase
Solution Approach 1:
The headrest adjustment system performs self-service by automatically detecting the operator's head position through sensors and autonomously adjusting to the optimal position using the actuator. This eliminates the need for the operator to spend time manually adjusting the headrest, transforming a time-consuming manual task into an automated self-adjusting process.
Solution Approach 2:
The system performs preliminary action by pre-positioning the headrest at the optimal location before the operator begins work. The sensor system detects head position and the actuator makes necessary adjustments in advance, ensuring the headrest is already in the correct position when the operator needs it, thereby eliminating adjustment delays.
3Manufacturing precision
If the headrest position is fixed during manufacturing, then the manufacturing precision is maintained, but the adaptability to different operators deteriorates
Solution Approach 1:
The headrest position parameters (location, angle, distance) are made changeable through the actuator system, allowing dynamic adjustment based on individual operator characteristics. The sensor system detects each operator's specific head position requirements, and the control system commands parameter changes to optimize the headrest position for that particular operator, resolving the contradiction between manufacturing precision and adaptability.
Data Source
AI summary
Techniques for adjusting a headrest of a computer-assisted system include the following. The computer-assisted system includes a display unit configured to display images viewable by an operator, a headrest coupled to the display unit, the headrest configured to be contacted by a head of the operator, an actuator operable to move the headrest relative to the display unit, a head-input sensor, and a control unit communicably coupled to the actuator and the head-input sensor. The control unit is configured to: determine head data based on sensor data acquired by the head-input sensor, determine a commanded motion based on at least the head data, a baseline, and a damping, and command the actuator to move the headrest based on the commanded motion.