Induction Cooktop Detection Circuit for Real-Time Pot Position Control
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Solution Overview
Problem
Conventional induction cooktops face issues with wire management, safety hazards during cleaning, and inefficient detection methods for multiple coil disks, leading to customer experience problems and increased costs.
Innovation Solution
An induction cooktop with a processing module, power supply module, and heating modules that include a detection circuit and heating circuit, using a switching element and inductor to dynamically detect and control the heating of pots based on voltage values, allowing real-time position detection and efficient heating.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple power strips are arranged on the cooktop to support multiple kitchen appliances, then the functionality and versatility are improved, but the wire management becomes cluttered and safety hazards increase
Solution Approach 1:
The patent integrates multiple heating zones into a single cooktop surface, combining multiple functions into one unified device. This eliminates the need for separate power strips and multiple independent appliances, thereby reducing wire clutter and safety hazards while maintaining versatility through multiple heating zones with independent control.
Solution Approach 2:
The cooktop is designed with multiple heating zones that can independently heat different pots and pans simultaneously. Each zone functions as an independent heating unit, providing universal functionality for various cooking tasks while maintaining a clean, integrated design without external wires or power strips.
2Adaptability or versatility
If multiple power strips are arranged on the cooktop to support multiple kitchen appliances, then the functionality and versatility are improved, but the device complexity and wire management become problematic
Solution Approach 1:
The patent integrates multiple heating zones into a single cooktop surface, combining multiple functions into one unified device. This eliminates the need for separate power strips and multiple independent appliances, thereby reducing wire clutter and safety hazards while maintaining versatility through multiple heating zones with independent control.
3Device complexity
If conventional single pulse detection methods are used for a single coil disk, then the detection implementation is simple, but the detection cost increases and identification accuracy decreases when multiple coil disks are present
Solution Approach 1:
The patent divides the cooktop into multiple independent heating zones, each with its own detection and control circuitry. This segmentation allows each zone to be detected and controlled independently using simple single-pulse methods, avoiding the complexity and cost issues that would arise from trying to detect multiple coil disks simultaneously with a single detection system.
Solution Approach 2:
The patent implements dynamic control where each heating zone can be independently activated or deactivated based on real-time detection of pot presence. The system dynamically adjusts which zones are active, allowing flexible operation with multiple zones while maintaining simple detection implementation for each individual zone.
4Device complexity
If the pot must be placed at a designated location to be heated, then the detection and control is simplified, but the user experience and adaptability are reduced
Solution Approach 1:
The patent implements dynamic control where each heating zone can be independently activated or deactivated based on real-time detection of pot presence. The system dynamically adjusts which zones are active, allowing flexible operation with multiple zones while maintaining simple detection implementation for each individual zone.
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 solution enables efficient detection and control of pot placement, reducing wire clutter, enhancing safety, and improving user experience by dynamically managing the heating process, thus increasing heating efficiency and reducing costs.
Implementation Method 1
The heating circuit includes a switching element and an inductor. The processing module is configured to control the switching element to connect the inductor to the power supply module in response to determining that a pot is placed on the heating module, so that the pot is heated by the inductor.
Implementation Method 2
The heating circuit is configured to heat a pot, and a detection circuit connected to the heating circuit. The processing module is configured to control the switching element to connect the inductor to the power supply module in response to determining that a pot is placed on the heating module, so that the pot is heated by the inductor.
Implementation Method 3
The processing module is configured to acquire a parameter value at a signal collection point in the detection circuit, to determine whether a pot is placed on the heating module according to the parameter value. The processing module is configured to collect a voltage value at the signal collection point in the detection circuit, and to determine whether a pot is placed on the heating module according to the voltage value.
Data Source
AI summary
An induction cooktop and a control method for the induction cooktop, the induction cooktop includes: a processing module, a power supply module and a heating module; the power supply module is configured to supply power to the heating module. The heating module includes: a heating circuit configured to heat a pot and a detection circuit connected to the heating circuit. The processing module is configured to acquire a parameter value of a signal collection point of the detection circuit, determine, according to the parameter value, whether the pot is placed on the heating module, and control the heating circuit to heat the pot if it is determined that the pot is placed on the heating module, so as to provide a high heating efficiency.