Capacitive Touch Load Control With Adaptive Gesture Filtering
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Solution Overview
Problem
Traditional load control devices are limited in their ability to control advanced electrical loads due to their simple actuation mechanisms and lack of visual feedback, making it difficult for users to manage multiple parameters or loads through a single device.
Innovation Solution
A control device with a capacitive touch surface that detects point actuations and uses different filtering techniques based on user input modes to generate output signals for controlling electrical loads, providing visual feedback and enabling advanced control features like gesture-based control and power adjustment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If traditional mechanical toggle switches are used for load control, then the device structure is simple and easy to manufacture, but the control capability is limited and cannot manage multiple parameters or advanced electrical loads
Solution Approach 1:
The patent replaces traditional mechanical toggle switches with a capacitive touch surface that detects gestures through electrical field changes. This substitution enables advanced control capabilities for multiple electrical loads and parameters while eliminating mechanical wear and improving reliability, directly resolving the contradiction between control capability and device structure.
2Loss of information
If traditional load control devices are used, then the device is simple to operate, but visual feedback is lacking and user experience is poor
Solution Approach 1:
The patent incorporates visual feedback mechanisms including LED indicators and display elements that provide real-time information about the state of controlled electrical loads. This feedback loop allows users to see the current status, making the device more informative and improving user experience while managing the complexity through integrated circuit design.
3Adaptability or versatility
If capacitive touch surfaces with gesture detection are implemented, then control versatility is enhanced, but the device complexity and manufacturing difficulty increase
Solution Approach 1:
The capacitive touch surface serves multiple functions: detecting various gestures (taps, slides, presses), providing visual feedback through integrated LEDs, and controlling multiple types of electrical loads. By consolidating these functions into a single integrated component, the patent reduces overall manufacturing complexity while maintaining enhanced versatility.
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
Enhances user interaction and control capabilities by allowing for precise control of electrical loads through touch gestures and visual feedback, enabling the management of multiple parameters and loads in a single device.
Implementation Method 1
an actuation member having a front surface defining a touch sensitive surface (e.g., a capacitive touch surface) configured to detect a point actuation along at least a portion of the front surface
Implementation Method 2
The touch sensitive device may comprise one or more receiving capacitive touch pads located behind the actuation member and arranged in a linear array adjacent to the touch sensitive surface
Data Source
AI summary
A control device configured for use in a load control system to control one or more electrical loads may comprise an actuation member having a front surface defining a touch sensitive surface configured to detect a point actuation along at least a portion of the front surface, a touch sensitive circuit, and a control circuit. The touch sensitive device may comprise one or more receiving capacitive touch pads located behind the actuation member and arranged in a linear array adjacent to the touch sensitive surface. The control circuit may be configured to operate using different filtering techniques based on the state/mode of the control device and/or based on whether the positions of point actuations by a user along the touch sensitive surface indicate a fine tune or gross adjustment by the user. For example, the control circuit may generate an output signal using light/no filtering or using heavy filtering.