Control knob and cooking system
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Solution Overview
Problem
Traditional cooking devices lack intuitive control methods and design variety, with input devices such as dial knobs and analog buttons failing to meet user needs for manipulation and visual feedback.
Innovation Solution
A control knob with a magnet for wireless power reception, light emitting elements, and a communication module that communicates with the cooking device to control light patterns based on movement, providing visual feedback and enhancing design through light emission zones and color changes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If traditional dial knobs or analog buttons are used for control, then the device structure is simple, but the user interaction is not intuitive and lacks visual feedback
Solution Approach 1:
The patent applies color changes through light emitting elements (LEDs) that display different colors or patterns to indicate operational states, power levels, and cooking modes. This provides intuitive visual feedback to users without requiring complex mechanical controls, resolving the contradiction between simple structure and intuitive interaction.
Solution Approach 2:
The patent replaces traditional mechanical dial knobs and analog buttons with a wireless control knob that communicates via magnetic field detection and wireless power transfer. This substitution eliminates mechanical wear and complex mechanical structures while providing more intuitive rotational and pressing control mechanisms with visual feedback.
2Loss of information
If wireless power reception and communication modules are added to the control knob, then visual feedback and design variety are enhanced, but the device complexity increases
Solution Approach 1:
The control knob integrates multiple functions including wireless power reception, bidirectional communication, magnetic field detection, and light emission control into a single device. This multi-functionality allows the knob to provide comprehensive visual feedback while maintaining a relatively simple unified structure, rather than requiring separate components for each function.
Solution Approach 2:
The control knob uses the cooking device's electromagnetic field (originally used for heating) to simultaneously provide wireless power transmission and communication signals. The receive coil detects both power signals and data signals from the cooking device's electromagnetic field, allowing the control knob to operate autonomously without requiring separate power or communication infrastructure.
3Adaptability or versatility
If light emitting elements are controlled based on magnetic field data from cooking device movement, then user interaction is enhanced, but the control system complexity increases
Solution Approach 1:
The system implements feedback by having the control knob detect magnetic field changes caused by cooking device movements (such as pot placement or position changes) and respond by controlling light emitting elements to display relevant information. This feedback loop provides intuitive visual information about device state changes without requiring complex manual controls.
Solution Approach 2:
The control knob acts as an intermediary device that translates cooking device movements (detected through magnetic field changes) into visual feedback through light emitting elements. This intermediary function simplifies the control system by using the existing electromagnetic field as a communication medium, rather than requiring direct complex sensing and control circuits.
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 control knob allows for intuitive control of cooking devices by visually indicating operation states through light patterns, enhancing user interaction and design aesthetics.
Implementation Method 1
a receive coil inside the housing and configured to, with the magnet attached to the cooking device, receive wireless power from the cooking device
Implementation Method 2
a magnet on a bottom surface of the housing and configured to be attachable to a cooking device
Data Source
AI summary
A cooking system disclosed herein may comprises a cooking device; and a control knob attachable to the cooking device and including a plurality of light emitting elements, wherein the cooking device is configured to, with the control knob attached to the cooking device, transmit wireless power to the control knob, drive at least one heating coil based on movement of the control knob, determine a target coil to be controlled among the at least one heating coil based on a change in magnetic field detected by a sensor according to movement of the control knob, and control firepower of the target coil, and the control knob is configured to, with the control knob attached to the cooking device, control the plurality of light emitting elements based on magnetic field data received from the cooking device.