Temperature sensing device
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Solution Overview
Problem
Existing induction stoves face challenges in accurately measuring and controlling cookware temperature due to variability in cookware materials, leading to inconsistent results and safety concerns like temperature spikes.
Innovation Solution
A temperature sensing device with a sensor package, plunger assembly, and support base that includes self-heated flux sensors and auxiliary sensors to detect heat flux changes, providing precise temperature control and rapid response times across different cookware materials.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If existing temperature sensors are used with different cookware materials, then temperature measurement is obtained, but measurement precision deteriorates due to material variability
Solution Approach 1:
The system dynamically adapts its measurement approach by detecting cookware material properties and adjusting sensing parameters in real-time. The temperature sensor operates in different measurement modes depending on the detected material, enabling both high precision and broad material compatibility without requiring multiple specialized sensors.
Solution Approach 2:
The measurement parameters such as excitation frequency, power level, and sensing timing are dynamically changed based on the detected cookware material properties. This allows the system to optimize measurement accuracy for each material type while maintaining universal compatibility across different cookware materials.
2Reliability
If temperature sensing is implemented, then temperature control is achieved, but response time increases due to thermal lag
Solution Approach 1:
The system performs preliminary detection of cookware material properties and pre-adjusts measurement parameters before actual temperature measurement begins. This preliminary characterization enables faster subsequent measurements by pre-configuring optimal sensing parameters, reducing the overall time lag while maintaining accurate temperature control.
Solution Approach 2:
The system replaces purely thermal contact measurement with a hybrid approach incorporating electromagnetic sensing methods. By using induction-based sensing that detects material properties and temperature through electromagnetic fields rather than relying solely on thermal conduction, the system dramatically reduces measurement lag while maintaining control accuracy.
3Measurement precision
If temperature sensing device is added to induction stove, then temperature control capability is improved, but device complexity increases
Solution Approach 1:
The temperature sensing device is designed as a universal multi-functional module that can detect various cookware material properties and perform temperature measurement through a single integrated system. Rather than requiring separate specialized sensors for different materials, one universal device handles all material types, reducing overall system complexity while maintaining high measurement precision.
Solution Approach 2:
The sensing device automatically characterizes cookware material properties and self-adjusts its measurement parameters without requiring external calibration or manual configuration. This self-service capability eliminates the need for complex external calibration equipment and simplifies the overall system architecture while maintaining accurate temperature sensing across different materials.
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 accurate and precise temperature measurement with minimal lag, ensuring safe and controlled heating and maintaining setpoint temperatures, reducing the risk of overheating or underheating.
Implementation Method 1
one or more flux sensors and an auxiliary sensor positioned at a bottom surface of the induction cooktop
Data Source
AI summary
A temperature sensing device for an induction stove and a method for assembling the temperature sensing device are described. An example temperature sensing device includes a sensor package including one or more sensors, a plunger assembly configured to hold the sensor package, and a support base configured to provide a physical support for the plunger assembly.