Multi-mode Automatic Faucet with Sensor-based Mode Switching

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Solution Overview

Problem

Existing automatic faucets either require continuous hand presence for hands-free operation or lack flexibility for tasks needing continuous water flow, such as filling basins, which can be frustrating and inefficient.

Innovation Solution

A faucet with both hands-free and manual operation modes, using proximity sensors and a logical control system that toggles between modes based on user interaction, allowing for touch control and hands-free operation, with a mode indicator for user feedback.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Loss of energy

If hands-free operation mode is used, then water efficiency is improved and sanitation is enhanced, but flexibility for tasks requiring continuous water flow deteriorates

Engineering Contradiction:

Improvewater efficiencyVSAvoidflexibility for continuous flow tasks

Core Design Contradiction:

Loss of energyVSAdaptability or versatility

Solution Approach 1:

The faucet system dynamically switches between hands-free operation mode and manual operation mode based on user needs. The control system allows transition from automatic sensor-based control to manual handle control, enabling the same faucet to adapt to different task requirements whether water conservation or continuous flow is needed

Inventive Principle:

Principle #15Dynamics

2Ease of operation

If continuous water flow is provided for tasks like filling basins, then usability is improved, but water efficiency deteriorates

Engineering Contradiction:

Improveusability for filling tasksVSAvoidwater consumption

Core Design Contradiction:

Ease of operationVSLoss of energy

Solution Approach 1:

The faucet provides dynamic control modes where users can switch between hands-free operation for water-efficient tasks and manual operation for tasks requiring continuous flow. This allows users to optimize water consumption based on the specific task being performed

Inventive Principle:

Principle #15Dynamics

3Adaptability or versatility

If multiple operation modes are integrated, then adaptability is improved, but device complexity increases

Engineering Contradiction:

Improvemulti-mode operation capabilityVSAvoidcontrol system complexity

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The faucet integrates multiple operation modes (hands-free and manual) into a single universal device. The control system incorporates both proximity sensors for automatic operation and traditional handle mechanisms for manual control, allowing one faucet to serve multiple functions and adapt to various user needs

Inventive Principle:

Principle #6Universality (Multi-functionality)

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 water-efficient hands-free operation while allowing for continuous flow when needed, enhancing usability and convenience for various tasks, particularly in kitchen settings.

Implementation Method 1

These faucets employ a proximity detector and an electric power source to activate water flow

Methodology Applied

Scientific EffectProximity detection:

Implementation Method 2

The touch control controlling activation of water flow through the faucet in response to contact of a user with the handle

Methodology Applied

Scientific EffectCapacitive touch sensing: Capacitance

Data Source

PatentUS8844564B2Multi-mode hands free automatic faucet

Publication Date: 2014.09.30 DELTA FAUCET COMPANY

AI summary

A faucet includes a proximity sensor, a logical control, a handle, a spout, and a touch control operably coupled to at least one of the spout and the handle.