Power Seat Push Sensor Layout for Intuitive Direction Control
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Solution Overview
Problem
Existing power seat devices lack intuitive operability, as operators struggle to recognize the desired direction of movement due to potential accidental activation by body proximity to capacitance sensors, leading to unsatisfactory user experience.
Innovation Solution
A power seat device equipped with a capacitance-type sensor operation unit featuring compressively deformable dielectric layers between electrodes, allowing detection of push operations and controlling the movement of movable members in the intended direction, thereby enhancing operability and preventing erroneous movements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Extent of automation
If a capacitance sensor is used to detect body proximity for seat adjustment, then the seat can be operated automatically, but accidental activation occurs when body parts approach the sensor by chance
Solution Approach 1:
A push operation detection unit is introduced as an intermediary between the body proximity detection and the seat adjustment execution. This intermediary verifies the operator's intent by detecting deliberate push operations on the seat surface, ensuring that automatic adjustment only occurs when both proximity is detected and a deliberate push action is confirmed, thereby preventing accidental activation.
2Device complexity
If an operation lever is provided at one position for seat adjustment, then the device structure is simplified, but the operator cannot easily recognize the desired direction of movement
Solution Approach 1:
The seat surface is divided into multiple detection regions with different local qualities, where each region corresponds to a specific adjustment direction. By detecting push operations at different locations on the seat surface, the system provides intuitive directional recognition while maintaining a simple unified operation interface, eliminating the need for separate operation levers for each direction.
3Productivity
If the seat moves at high speed for efficient adjustment, then the adjustment time is reduced, but the operator may not intuitively recognize the movement direction
Solution Approach 1:
The system implements feedback by detecting the operator's push operation direction and adjusting the seat movement direction accordingly. The push operation detection unit continuously monitors operator input, and the control unit adjusts the seat position in real-time based on this feedback, ensuring that high-speed adjustment maintains intuitive directional control and operator awareness.
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 solution provides intuitive recognition of movement direction, improves operability by ensuring that the power seat moves in the desired direction based on the operator's push, and prevents accidental activation, resulting in a more comfortable and efficient user experience.
Implementation Method 1
a detector that detects a capacitance between the pair of electrodes with the compressive deformation of the dielectric layer
Implementation Method 2
a dielectric layer formed between the pair of electrodes so as to be compressively deformable
Data Source
AI summary
Provided is a power seat device in which an operator can intuitively recognize an operation of a movable member. Operation units are provided in movable members in a power seat body. Each of the operation units includes a pair of electrodes and a dielectric layer formed between the pair of electrodes so as to be compressively deformable, and compressively deforms the dielectric layer by an operator's push operation. Driving devices are controlled so that the movable members move in the push direction of the operator based on the capacitance between the pair of electrodes changing with the compressive deformation of the dielectric layer.