Capacitive Marine Touch Switch for Waterproof Multifunction Control
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Solution Overview
Problem
Traditional marine electronics control systems using push-button or latching switches are prone to wear and damage from mechanical shocks and vibrations, and lack multifunctionality, making them unsuitable for marine environments where waterproof and vibration-resistant solutions are needed.
Innovation Solution
A multifunction touch-switch system comprising a waterproof housing with a touch sensor, microcontroller, printed circuit board, and output interfaces, which determines output states based on input rules and is designed to be coupled with a power supply and output devices, providing programmable control for multiple functions without moving parts.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional push-button or latching switches are used, then the control system is simple and easy to manufacture, but the switches wear out through use and are degraded by mechanical shocks and vibrations
Solution Approach 1:
The patent replaces traditional mechanical push-button or latching switches with a touch-sensitive control interface that detects user input through capacitance changes. This eliminates mechanical moving parts, contacts, and switches entirely, substituting them with an electronic sensing system that reads touch gestures directly through the display surface, thereby improving reliability while maintaining simplicity
Solution Approach 2:
The patent introduces a controller as an intermediary component that mediates between the touch-sensitive display and the controlled devices. The controller receives touch inputs, processes them according to programmed logic, and outputs control signals to various marine systems, thereby managing complexity centrally rather than requiring complex individual switches for each function
2Adaptability or versatility
If traditional mechanical switches are used, then each switch controls a single function, but multiple switches are required to control multiple devices or functions
Solution Approach 1:
The patent implements a universal touch-sensitive display interface that can control multiple marine devices and functions through a single integrated control surface. Different zones, gestures, or pressing durations on the display correspond to different functions (e.g., adjusting trim, controlling lights, managing engine parameters), allowing one versatile interface to replace numerous dedicated mechanical switches
Solution Approach 2:
The patent makes the control interface dynamic by allowing the same physical touch zone to perform different functions based on contextual factors such as the state of the system, duration of touch, or combination with other inputs. This dynamic behavior enables a limited number of touch zones to effectively control a large number of functions without requiring physical reconfiguration
3Reliability
If touch switches are used, then moving parts are eliminated improving durability, but the electrical components do not fit within traditional waterproof housings
Solution Approach 1:
The patent employs a thin-film touch-sensitive display that serves as both the user interface and the control element. This flexible, flat-panel technology can be integrated into the marine control environment and sealed within appropriately designed protective housings, combining the shock and vibration resistance of solid-state electronics with the ability to provide a large, versatile control surface
4Adaptability or versatility
If touch switch controllers are used, then programmability and multiple functions are achieved, but the controllers are sensitive to input polarity and circuit overloading
Solution Approach 1:
The patent incorporates protective circuitry and control logic that anticipates and prevents damage from polarity reversal or overloading. The system includes features such as polarity detection and correction, current limiting, and fault detection that activate before damage occurs, cushioning the sensitive controller against harsh electrical conditions in the marine environment
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
The system offers enhanced durability and multifunctionality, resisting mechanical shocks and vibrations while ensuring waterproofing, thus improving control over marine vehicle systems like lighting and other devices.
Implementation Method 1
Touch switches (also known as conductive-touch or capacitive-touch switches) detect contact by a user's finger
Data Source
AI summary
A multifunction touch-switch system is provided. The multifunction touch-switch system is configured to control devices (for example LED lighting) by a touch switch. The multifunction touch-switch system may be configured to be waterproof and vibration resistant for use in a marine environment, for example aboard a marine vehicle. The multifunction touch-switch system may be configured to control multiple functions of multiple devices with a single touch sensor. In addition to a controller and a housing for the controller, the multifunction touch-switch system may also comprise an indicator light.