Temperature measuring method and device for induction cooker, and readable storage medium
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Solution Overview
Problem
Induction cookers struggle to accurately measure the temperature of containers due to air gaps between the microcrystal panel and the container, leading to incorrect temperature readings from temperature sensors.
Innovation Solution
A temperature measuring method for induction cookers that uses at least three temperature sensors distributed on the microcrystal panel, determining their positions based on magnetic flux coverage and spiral or concentric distribution patterns, to accurately calculate the container's actual temperature by analyzing temperature data and matching it with preset curves.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If temperature sensors are positioned inside the induction cooker through the microcrystal panel, then the structure is simple and easy to manufacture, but the air gap between the microcrystal panel and container bottom results in low thermal conductivity and incorrect temperature measurements
Solution Approach 1:
The patent divides the temperature sensing function into multiple sensors (at least three temperature sensors) distributed at different positions on the microcrystal panel. Each sensor measures temperature at its specific location, and the system segments the temperature field into multiple measurement points to overcome the thermal insulation effect of the air gap.
Solution Approach 2:
The patent transitions from single-point temperature measurement to multi-point spatial temperature measurement. By distributing sensors across different positions on the microcrystal panel and using the position data combined with temperature data, the system creates a two-dimensional temperature measurement field that enables accurate determination of container bottom temperature through spatial analysis.
2Device complexity
If a single temperature sensor is used, then the device complexity is low, but the temperature measurement is incorrect due to unreasonable sensor arrangement and air gap thermal insulation
Solution Approach 1:
The patent segments the temperature measurement task into multiple independent sensor measurements. By using at least three temperature sensors at different positions, each sensor independently measures the temperature at its location, and the system processes these segmented measurements to determine the overall container bottom temperature.
Solution Approach 2:
The patent implements a feedback mechanism where the temperature data from multiple sensors is continuously collected, processed, and used to calculate the actual container bottom temperature. The system uses the temperature data combined with position data to determine the container position and adjust the temperature calculation accordingly, creating a closed-loop feedback system that improves measurement accuracy.
3Measurement precision
If temperature sensors are scattered on the microcrystal panel, then the container position can be determined, but the temperature measurement accuracy improves only when complex position and curve analysis is performed
Solution Approach 1:
The patent performs preliminary actions by pre-establishing the relationship between sensor positions and container positions. The system pre-processes the position data of temperature sensors relative to the microcrystal panel and creates preset temperature curves that match the induction cooker characteristics. This preliminary preparation enables faster and simpler real-time temperature calculation once the container is placed.
Solution Approach 2:
The patent changes the parameters used for temperature calculation by introducing position-dependent temperature curves. Instead of using a fixed temperature measurement method, the system adjusts the temperature calculation parameters based on the determined container position and matches it with the corresponding preset temperature curve, enabling accurate temperature measurement across different container positions.
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 method ensures accurate temperature measurement of containers, even when offset, by forming a temperature vector and using a temperature correction coefficient, improving electromagnetic compatibility and adaptability to various positions.
Implementation Method 1
the temperature of the bottom of the container to be measured is normally measured by the temperature sensor positioned inside the induction cooker and spaced from the container through the microcrystal panel
Implementation Method 2
the induction cooker being configured to heat a container to be measured
Data Source
AI summary
An induction cooker includes a microcrystal panel and at least three temperature sensors scattered on a bottom surface of the microcrystal panel, and the induction cooker is configured to heat a container to be measured. The method includes: obtaining temperature data collected by the at least three temperature sensors and position data of each temperature sensor relative to the microcrystal panel; obtaining an actual position of the container on the microcrystal panel according to the temperature data and the position data; obtaining a preset temperature curve matching the induction cooker according to the temperature data, and extracting a peak value of the preset temperature curve; and calculating an actual temperature of the container to be measured according to the actual position and the peak value.