Wireless Control Knob for Appliances to Reduce Dust and Liquid Ingress
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Solution Overview
Problem
Electrical appliance control knobs are susceptible to dust and liquid ingress, leading to inaccurate or erratic operation due to their physical and electronic connections, which complicates cleaning and maintenance.
Innovation Solution
A wireless control system with a detachable control knob that uses wireless power transfer and signaling, incorporating modules like rotational encoders, biometric scanners, and electronic displays, allowing for remote operation and enhanced security features like automatic shutdown when detached or without a valid biometric signature.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the control knob is physically connected to the housing with electronic components, then control functionality is achieved, but dust and liquid ingress damages the electronic components
Solution Approach 1:
The patent replaces the mechanical/electrical connection between the control knob and housing with a wireless communication system. The control knob contains a transmitter that wirelessly transmits control signals to a receiver in the housing, eliminating physical connectors and electronic components that are susceptible to dust and liquid damage.
Solution Approach 2:
The patent extracts the electronic components from the control knob assembly and places them solely within the protected housing. The control knob becomes a simple mechanical interface with wireless transmission capability, while all vulnerable electronics remain enclosed in the sealed housing environment.
2Ease of operation
If the control knob has physical electronic connections, then power and control signals can be transmitted, but cleaning and maintenance become complicated
Solution Approach 1:
The patent replaces the mechanical/electrical connection between the control knob and housing with a wireless communication system. The control knob contains a transmitter that wirelessly transmits control signals to a receiver in the housing, eliminating physical connectors and electronic components that are susceptible to dust and liquid damage.
Solution Approach 2:
The patent divides the control system into two separate segments: the control knob (mechanical interface with wireless transmitter) and the housing (containing all electronics and wireless receiver). This segmentation allows the knob to be easily removed and cleaned without disassembling electronic components, while the housing protects all sensitive electronics.
3Ease of manufacture
If wireless power transfer and control signaling are implemented, then cleaning and maintenance are simplified, but device complexity increases
Solution Approach 1:
The wireless communication module serves multiple functions: it transmits control signals from the knob to the housing, provides power transfer capability, and enables various input methods (rotational encoder, biometric scanner, motion sensors, touch display, voice input). This multi-functionality reduces the need for separate systems for each function.
Solution Approach 2:
The patent introduces a wireless communication module as an intermediary between the control knob and the housing electronics. This intermediary handles both power transfer and control signaling through wireless means, simplifying the overall system architecture despite the added wireless technology.
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
This solution enables easy cleaning and maintenance, reduces mechanical wiring, provides a safer interface, and allows remote monitoring and control of electrical appliances, enhancing user interaction and security.
Implementation Method 1
The wireless power transfer system may be configured to transfer power by way of at least one of inductive coupling and capacitive coupling.
Implementation Method 2
the attachment element may be configured for releasably attaching the control knob to the outer surface of the housing includes a magnetic attachment element
Implementation Method 3
The wireless control signaling module may include a radio frequency control signaling module. Preferably, the radio frequency control signaling module may include at least one of a Bluetooth®, Wi-Fi® and a Zigbee based radio frequency transmitter.
Data Source
AI summary
A control system for use in controlling operation of an electrical appliance, including: an electrical appliance housing having a control module; and a power source; a control knob including: an attachment element configured for releasably attaching the control knob to an outer surface of the housing; and an input/output module; a wireless power transfer system configured for wirelessly transferring power from the power source through the electrical appliance housing and to the input/output module for use in powering the input/output module; and a wireless control signaling module configured for wirelessly communicating a control signal from the control knob through the housing to the control module within the electrical appliance housing, said control signal received by the control module being indicative of an operational position/state of the control knob, and whereby said control module is configured for controlling operation of the electrical appliance by reference to the received wireless control signal.