Input device
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Solution Overview
Problem
Existing input devices, such as vehicle seat table devices, fail to prevent unintended operational inputs when the table is in motion or storage positions or when the vehicle is vibrating, leading to unintended device operations.
Innovation Solution
An input device with a touch sensor and a controller that invalidates output signals when the operation table is in a storage position, moving, or when the device is vibrating, utilizing detectors and an acceleration sensor to determine these conditions and prevent unintended operations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the touch sensor continuously receives operation inputs, then user interaction capability is improved, but unintended operations occur when the table is moving or vibrating
Solution Approach 1:
The controller preliminarily determines whether the operation table is in a permissible operation position before processing touch sensor signals. By checking the position in advance and invalidating signals when in storage position or during movement, the system prevents unintended operations while maintaining continuous user interaction capability when properly positioned.
Solution Approach 2:
The system uses acceleration sensors to detect vibration and provides feedback to the controller. When vibration is detected during operation, the controller invalidates touch sensor outputs, creating a feedback loop that prevents unintended operations caused by vehicle movement while allowing normal operation during stable periods.
2Volume of moving object
If the operation table is made movable for storage, then space utilization is improved, but unintended operations occur during movement
Solution Approach 1:
The controller determines the operation table's position in advance by detecting whether it is in the storage position. When the table is detected to be in storage position or during movement between positions, the controller invalidates touch sensor outputs before unintended operations can occur, enabling space-saving movable design while maintaining operational reliability.
3Speed
If the touch sensor is always active, then response time is improved, but false inputs occur during vibration
Solution Approach 1:
The acceleration sensor continuously monitors vibration and provides feedback to the controller. When vibration exceeding a threshold is detected, the controller invalidates touch sensor outputs, creating a dynamic response system that maintains quick response during stable operation while filtering out false inputs during vehicle movement.
Solution Approach 2:
The controller preliminarily checks vibration status before processing touch inputs. By detecting vibration conditions in advance and preemptively invalidating signals during excessive vibration, the system maintains rapid response capability during normal operation while preventing false inputs during vehicle movement.
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
Effectively prevents unintended user operations by ensuring that output signals from the touch sensor are only validated when the operation table is in a permitted position and the device is not vibrating, enhancing user control and reducing accidental device activation.
Implementation Method 1
an acceleration sensor that detects vibration of the input device
Data Source
AI summary
An input device includes: an operation table including: a touch sensor that receives an operation input; and a controller to which an output signal outputted from the touch sensor is inputted. The controller invalidates the output signal inputted to the controller, in at least one of following cases: (i) when the operation table is in middle of moving or is in a storage position where the operation table is stored, or (ii) when the input device is vibrating.