Seatback Pressure Sensor Control for Intuitive Angle Adjustment
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Solution Overview
Problem
Existing seat devices require manual adjustment of the inclination angle switch, which is not intuitive and often needs to be operated blindly, leading to unstable adjustments.
Innovation Solution
A seat device equipped with first and second pressure sensors on the seatback and a control unit that adjusts the seatback angle based on pressure values detected by these sensors, allowing users to intuitively adjust the seat position by applying pressure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a manual inclination angle adjustment switch is disposed at a lower portion of a side of a seat cushion, then the seat position can be adjusted, but the switch cannot be directly visually checked and the adjustment becomes non-intuitive and unstable
Solution Approach 1:
The seatback itself serves as the adjustment interface. When the user applies pressure to the seatback, the pressure sensors detect the force and the control unit automatically adjusts the seatback angle accordingly, eliminating the need for a separate manual switch and making the adjustment intuitive and direct
Solution Approach 2:
The manual mechanical switch operation is replaced with an automatic electronic control system that uses pressure sensors to detect user intent and automatically actuates the motor to adjust the seatback angle, converting a manual mechanical operation into an automated electromechanical system
2Reliability
If the inclination angle adjustment switch is manually operated, then the seat position can be changed, but the occupant needs to grope for the switch and cannot visually check it, leading to unstable adjustment
Solution Approach 1:
The system provides immediate feedback by detecting the pressure applied to the seatback through pressure sensors. The control unit processes this feedback and automatically adjusts the seatback angle, ensuring stable and reliable adjustment without requiring visual feedback from the user
3Ease of operation
If pressure sensors are attached to the seatback to detect pressure, then intuitive seat position adjustment is enabled, but the device complexity increases
Solution Approach 1:
The pressure sensors attached to the seatback serve multiple functions: they detect both the magnitude and direction of pressure applied by the user, enabling intuitive adjustment while also providing feedback for stable control. This multi-functionality reduces the need for additional separate 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
Enables users to easily and intuitively adjust the seat position without needing to visually check the switch, providing a more stable and user-friendly experience.
Implementation Method 1
a first pressure sensor attached to the seatback to detect pressure
Implementation Method 2
a second pressure sensor attached to the seatback at a position below the first pressure sensor to detect pressure
Data Source
AI summary
A first seat device includes a first pressure sensor attached to a seatback to detect pressure, a second pressure sensor attached to the seatback at a position below the first pressure sensor to detect pressure, and a control unit configured to control the angle of the seatback based on a value of the first pressure sensor and a value of the second pressure sensor.