Capacitive Multi-Touch Light Switch for Intuitive Circuit Control
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Solution Overview
Problem
Existing multiple touch switches for controlling lighting and other home functions are cumbersome, requiring conscious mental effort and multiple button presses or a single button for complex operations, lacking intuitive control over multiple light circuits.
Innovation Solution
A capacitive multiple touch switch with multiple touch surfaces, each controlling a different function, and an additional general function activated by simultaneous or timed touch, allowing for intuitive control of lights and other functions without mechanical components, using RGB LEDs for feedback.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single button is used for controlling multiple light circuits, then the device complexity is reduced, but the ease of operation deteriorates as users must perform multiple button presses or complex sequences to control different circuits
Solution Approach 1:
The touch switch surface is divided into multiple independent touch zones (first touch zone, second touch zone, etc.), each corresponding to a different light circuit. This segmentation allows users to control different circuits by touching different zones, eliminating the need for multiple button presses while maintaining simple device structure.
Solution Approach 2:
The invention transitions from traditional mechanical buttons to a capacitive touch surface, adding the dimension of spatial location as a control parameter. Users can select different functions by touching different locations on the same surface, reducing device complexity while improving ease of operation through intuitive spatial interaction.
2Ease of operation
If separate buttons are provided for each light circuit, then the ease of operation improves as users can directly control each circuit, but the device complexity increases with more components
Solution Approach 1:
Multiple touch zones are integrated into a single capacitive touch switch surface, combining the functions of what would traditionally require separate buttons. This merging maintains ease of operation by providing direct access to each circuit while reducing overall device complexity through integration.
Solution Approach 2:
The capacitive touch surface serves multiple functions simultaneously - each touch zone can independently control a different light circuit, and the same surface can also detect touch duration and sequence for additional control features, reducing the need for separate dedicated buttons for each function.
3Reliability
If mechanical components are used for touch detection, then the reliability of detection is improved, but the device complexity and number of moving parts increases
Solution Approach 1:
The invention replaces mechanical touch detection components with a capacitive sensing system. The capacitive touch surface detects touches through changes in electrical capacitance, eliminating mechanical moving parts while maintaining reliable detection through electronic sensing of touch events.
Solution Approach 2:
The capacitive touch surface inherently detects touch events through its electrical properties without requiring additional mechanical sensors or actuators. The surface itself serves as the detection element, simplifying the device structure while maintaining reliable touch detection through its self-contained capacitive sensing capability.
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 quick, intuitive, and user-friendly operation of multiple light circuits with reduced actions, allowing for simultaneous on/off control and intensity adjustments without visual searching, enhancing usability and convenience.
Implementation Method 1
This touching can be detected, for example, by an electronic circuit based on capacitive technology
Implementation Method 2
a return message can be sent if a touch surface is touched by means of a RGB LED (Light Emitting Diode)
Data Source
Figure 1~2
AI summary
By using touch technology, the multiple touch switch provides a general function by means of touching several touch surfaces at the same time, besides the individual operation of different functions of light circuits. This additional function can be used to turn on or off the various light circuits in a room in one movement in a pre-determined preferred sequence. The multiple touch switch is characterised by the fact that it highly increases the convenience of operating various light circuits in a single room, and nevertheless without compromising the advantage of operating each light circuit separately. Moreover, making the touch surfaces sufficiently large and the sensor sufficiently sensitive facilitates a very quick and intuitive system for operating the lighting.