Capacitive Faucet Touch Control for Handle-Free Water Adjustment
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Solution Overview
Problem
Existing faucets require manual valve handles for controlling temperature and flow rate, limiting design aesthetics and user convenience.
Innovation Solution
A capacitive sensing faucet that uses touch protocols on distinct areas to control water temperature and flow rate without handles, incorporating capacitive sensors and a controller to interpret touch inputs and operate an electrically operable valve.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If manual valve handles are used for controlling temperature and flow rate, then ease of operation is improved, but device complexity and aesthetic flexibility are worsened
Solution Approach 1:
The patent replaces manual mechanical valve handles with capacitive sensing technology. The capacitive sensors detect touch inputs from users on the spout body, and electronic controllers interpret these inputs to operate electrically-controlled valves. This substitution eliminates the need for external mechanical handles while maintaining ease of operation through intuitive touch interfaces.
Solution Approach 2:
The spout body serves multiple functions: it acts as both the structural component delivering water and the interface for capacitive sensing. By integrating the sensing function into the existing spout structure, the design eliminates separate control handles and achieves aesthetic flexibility without compromising operational ease.
2Ease of operation
If manual valve handles are used for controlling temperature and flow rate, then ease of operation is improved, but aesthetic flexibility is worsened
Solution Approach 1:
The patent replaces manual mechanical valve handles with capacitive sensing technology. The capacitive sensors detect touch inputs from users on the spout body, and electronic controllers interpret these inputs to operate electrically-controlled valves. This substitution eliminates the need for external mechanical handles while maintaining ease of operation through intuitive touch interfaces.
Solution Approach 2:
The patent merges the control interface functions into the spout body itself. The capacitive sensors are integrated into the spout structure, allowing the spout to serve as both the water delivery component and the control interface. This merging eliminates the need for separate handles and enables continuous, aesthetically pleasing designs.
3Device complexity
If capacitive sensors are used for touch control, then device complexity is reduced, but measurement precision is worsened
Solution Approach 1:
The patent implements feedback mechanisms where capacitive sensors continuously monitor touch inputs on the spout body. The electronic controllers process these signals and provide appropriate responses by adjusting valve positions. The system includes feedback loops that monitor sensor outputs and adjust control actions to achieve precise temperature and flow rate control despite the simplicity of capacitive sensing.
Solution Approach 2:
The patent incorporates preliminary calibration and setup procedures during manufacturing and installation. The capacitive sensors are pre-calibrated to recognize different touch patterns (single tap, double tap, press and hold) and their corresponding meanings. This preliminary configuration enables the simple capacitive sensors to accurately distinguish between different user intentions without requiring complex real-time analysis.
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 handle-free operation with customizable touch controls, providing intuitive water management and aesthetic flexibility, suitable for both right- and left-handed users.
Implementation Method 1
A first capacitive sensor is coupled to the controller and in response to a change in electrical capacitance provides an output signal indicating a user touch of the spout
Data Source
AI summary
An electronic faucet including a first touch sensing area and a second touch sensing area, wherein an electrically operable valve is selectively controlled in response to certain touch protocols, such as tapping and/or grabbing the first touch sensing area and the second touch sensing area.