Pressure-Sensor Array Comfort System for Automatic Posture Adjustment
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Solution Overview
Problem
Conventional adjustable seats and beds require manual user input for adjustments, which can lead to discomfort during long durations, such as flights or for individuals confined to wheelchairs or beds, as they do not automatically adapt to the user's posture and pressure points.
Innovation Solution
An automatically adjusting comfort system that uses a pressure-sensor array to measure and analyze pressure profiles, determining adjustments to mechanisms like lumbar support, firmness, tilt, massage, and temperature to enhance user comfort without manual intervention.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If manual adjustment mechanisms are provided in seats and beds, then users can adjust their position for comfort, but users must continuously monitor and manually adjust, which becomes cumbersome during extended periods
Solution Approach 1:
The system uses pressure sensors to automatically detect user pressure points and adjusts the seat or bed configuration without requiring user intervention. The controller processes pressure data and autonomously actuates adjustment mechanisms to relieve pressure points, allowing the system to serve itself rather than requiring continuous manual operation by the user.
Solution Approach 2:
The system incorporates pressure sensors that continuously monitor pressure distribution and provide feedback to the controller. Based on this real-time feedback, the controller automatically adjusts the seat or bed configuration to optimize comfort, creating a closed-loop control system that responds dynamically to user needs without manual input.
2Extent of automation
If automatic pressure sensing and adjustment systems are implemented, then user comfort is maintained without manual input, but the device complexity increases due to sensors and control mechanisms
Solution Approach 1:
The pressure sensor array serves multiple functions: it detects pressure points, determines user presence, monitors posture, and provides data for comfort optimization. This multi-functionality reduces the need for separate sensing systems and integrates multiple capabilities into a single component set, thereby managing complexity while enhancing automation.
Solution Approach 2:
The system replaces manual mechanical adjustment with an automated control system that uses electronic sensors and actuators. The controller processes sensor data and automatically actuates adjustment mechanisms, substituting the mechanical manual adjustment process with an automated electromechanical system that reduces operational complexity despite adding control electronics.
3Reliability
If pressure sensors continuously monitor pressure profiles, then real-time comfort optimization is achieved, but energy consumption increases
Solution Approach 1:
The system performs pressure monitoring and adjustment operations at periodic intervals rather than continuously. The controller evaluates pressure data at defined time intervals and makes adjustments when necessary, allowing the system to maintain reliability for comfort optimization while reducing energy consumption by avoiding constant active sensing and actuation.
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 dynamically adjusts to promote ergonomic posture, relieve pressure points, and maintain comfort over extended periods by automatically responding to real-time pressure data, reducing the need for user input and enhancing overall comfort.
Implementation Method 1
measuring pressure applied by a user to a first surface via a pressure-sensor array
Data Source
AI summary
An automatically adjusting comfort method includes measuring pressure applied by a user via a pressure-sensor array, determining a pressure profile based on measurements from the pressure-sensor array, comparing the pressure profile to a first limit, determining a cumulative pressure profile over a predetermined duration, comparing the cumulative pressure profile to a second limit, and adjusting one or more of a plurality of adjusting mechanisms configured to alter the pressure profile for increased comfort of the user when the pressure profile exceeds the first limit or the second limit. An automatically adjusting comfort system includes a pressure-sensor array communicatively coupled to a controller for determining a cumulative pressure profile over time, and a plurality of adjusting mechanisms configured to alter the pressure profile to increase a user's comfort, wherein the controller automatically adjusts one or more of the plurality of adjusting mechanisms based on the cumulative pressure profile.