Contactless Sensor Control System for Electrical Appliances
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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 exposure of electronic components.
Innovation Solution
A contactless sensor-based control system with a processor module and input control module, where the input control module is releasably attached to the housing and includes sensor-readable elements that interact with contactless-type sensors, allowing for precise control of the appliance's operational modes without direct contact with electronic components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If control knobs are physically connected to electronic control circuitry inside the housing, then control operation can be achieved, but dust and liquid ingress damages electronic components resulting in inaccurate or erratic control operation
Solution Approach 1:
The control system is divided into two separate modules: an input control module (control knob) that the user interacts with, and a processor module containing electronic components inside the housing. These modules are magnetically coupled but physically separated, allowing the control knob to be detached for cleaning while the electronic components remain protected inside the housing.
Solution Approach 2:
A magnetic field serves as an intermediary between the input control module and the processor module. The sensor-readable element on the control knob and the contactless-type sensor in the processor module interact through magnetic coupling without direct physical contact, eliminating the need for physical connections that would be susceptible to dust and liquid ingress.
2Ease of operation
If control knobs are integrated with the housing, then control functionality is achieved, but cleaning and replacement become difficult
Solution Approach 1:
The control system is segmented into a detachable input control module and a fixed processor module. The attachment element allows the control knob to be easily attached and detached from the housing, enabling simple cleaning and replacement without complex disassembly procedures.
Solution Approach 2:
The attachment element provides dynamic connectivity - the control knob can be firmly attached during operation for reliable control functionality, and easily detached when cleaning or replacement is needed. This dynamic state changes from fixed to movable based on operational requirements.
3Stability of the object's composition
If control knobs are fixed to the control panel, then structural stability is achieved, but manufacturing efficiency and cosmetic design are reduced
Solution Approach 1:
The control system is divided into separate modules that can be manufactured independently and then assembled. The input control module and processor module are produced separately using optimized manufacturing processes, then quickly assembled using the attachment element, improving overall manufacturing efficiency compared to fixed integrated designs.
Solution Approach 2:
The attachment element provides universal mounting capability that works with different housing designs and control panel configurations. This standardized interface allows the same input control module to be used across different appliance models, simplifying manufacturing and enabling cosmetic design flexibility.
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 protects electronic components from dust and liquids, simplifies cleaning and replacement, enhances manufacturing efficiency, and allows for cosmetic design by separating the control knob from the control panel, thereby improving the reliability and maintainability of electrical appliances.
Implementation Method 1
at least one contactless-type sensor operably-connected with the processor module... at least one sensor-readable element configured for contactless-interaction with the contactless-type sensor
Implementation Method 2
the attachment element may be configured for releasably attaching the input control module to the outer surface of the housing by way of magnetic force
Data Source
AI summary
A control system for use in controlling operation of an electrical appliance, the system including: a processor module disposed inside of a housing of the electrical appliance, the processor module including at least one contactless-type sensor operably-connected with the processor module; an input control module including: an attachment element configured for releasably attaching the input control module to an outer surface of the housing; and at least one sensor-readable element configured for contactless-interaction with the contactless-type sensor.