Capacitive Faucet Interface Using Thermally Formed Sensor Layers
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Solution Overview
Problem
Traditional faucets rely on manual controls for regulating water temperature and flow, which can be cumbersome and lack intuitive user interfaces for precise adjustments.
Innovation Solution
An electronic user interface featuring a thermally formed assembly of conductive, graphics, and protective layers with capacitive sensors and visual indicia, allowing for touch-based control of water temperature and flow rate through a delivery spout, integrated with a mixing valve and controller for precise fluid management.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If traditional manual controls are used for faucet operation, then the device complexity is low, but the ease of operation and precision of control deteriorate
Solution Approach 1:
The patent replaces traditional mechanical manual controls with an electronic user interface that uses capacitive sensors to detect touch inputs. This substitution eliminates the need for physical handle manipulation while enabling precise digital control of water temperature and flow rate through electronic signaling to the mixing valve.
Solution Approach 2:
The patent introduces a controller as an intermediary between the user's touch input and the mixing valve. The controller processes capacitive sensor signals and translates them into appropriate valve adjustments, enabling precise control without direct mechanical connection between user input and valve actuation.
2Manufacturing precision
If electronic user interface with multiple layers is implemented, then the precision of control improves, but the device complexity increases
Solution Approach 1:
The electronic user interface is segmented into distinct functional layers: capacitive sensor layer for input detection, graphics layer for visual feedback, and protective layer for durability. This segmentation allows each layer to be optimized independently while working together to provide precise control with improved manufacturing and assembly processes.
Solution Approach 2:
The patent employs a composite structure combining multiple materials with different properties: conductive materials for capacitive sensing, polymeric films for flexibility and protection, and graphical elements for user interaction guidance. This composite approach enables precise control functionality while managing overall device complexity through material integration.
3Ease of operation
If capacitive sensors are used for touch control, then the ease of operation improves, but the manufacturing complexity increases
Solution Approach 1:
The patent replaces mechanical switch or knob mechanisms with capacitive sensors that detect touch through electrical field changes. This substitution simplifies the user interaction to simple touch gestures while the sensors can be manufactured using standard PCB or flexible circuit techniques, making production more consistent and scalable.
Solution Approach 2:
The capacitive sensors are integrated into thin flexible polymeric films that can be laminated onto the faucet surface. This approach allows the sensors to conform to various shapes and surfaces, simplifying integration into different faucet designs while maintaining ease of manufacture through standard lamination and assembly processes.
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
Provides a user-friendly, intuitive method for adjusting water temperature and flow rate, enhancing user experience and operational efficiency by enabling precise control through capacitive touch inputs and visual feedback.
Implementation Method 1
capacitive sensors
Implementation Method 2
thermally forming the bonded assembly in a plurality of dimensions to define a formed assembly
Data Source
AI summary
An electronic user interface for use with a water delivery device, such as a faucet. The user interface illustratively includes a plurality of bonded layers thermally formed into a multi-dimensional shape. The layers may include a conductive layer, a graphics layer, and a protective layer. A structural support may be molded to a rear of the conductive layer.