Kitchen Appliance Tool Detection Using Temperature Signal Analysis
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Solution Overview
Problem
Kitchen appliances struggle to efficiently and reliably detect tools and control their operation, leading to potential errors in food preparation and reduced quality of the final product.
Innovation Solution
A control unit is integrated into the kitchen appliance, utilizing temperature measurement data from a temperature sensor to determine tool information, such as operation status and rotation speed, allowing for precise and reliable tool monitoring and control.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional tool detection methods are used, then the device complexity is low, but the reliability of tool detection and control is insufficient
Solution Approach 1:
The patent replaces mechanical or simple sensor-based tool detection systems with a thermal field-based detection system. By measuring temperature distribution patterns in the food material caused by tool operation, the system can identify tool presence and operational state without direct mechanical contact or complex mechanical sensors, thereby improving reliability while managing complexity.
Solution Approach 2:
The patent introduces temperature measurement data as an intermediary parameter to indirectly detect tool operational state. Instead of directly sensing tool presence or rotation, the system measures the thermal effects produced by tool operation on the food material, using temperature as a mediator to infer tool status with higher reliability.
2Manufacturing precision
If manual tool selection is used, then the ease of operation is high, but the manufacturing precision of food preparation deteriorates
Solution Approach 1:
The patent implements a feedback mechanism where temperature measurement data from tool operation is fed back to the control unit. The control unit automatically adjusts operational parameters based on detected tool type and state, ensuring precise food preparation without requiring manual intervention. The system monitors temperature patterns and autonomously optimizes cooking parameters.
Solution Approach 2:
The system performs automatic tool detection and parameter adjustment without requiring user intervention. The control unit independently identifies tool presence, determines operational state from temperature data, and self-adjusts cooking parameters, enabling the appliance to serve itself and maintain precision automatically.
3Reliability
If tool operation is not monitored, then the device complexity is low, but the reliability of cooking process deteriorates
Solution Approach 1:
The patent makes the temperature measurement system serve multiple functions: it simultaneously monitors tool presence, determines tool operational state (rotation or stationary), and tracks cooking progress. This multi-functionality improves cooking process reliability without proportionally increasing system complexity, as a single sensing system performs multiple detection tasks.
Solution Approach 2:
The system monitors changes in temperature parameters over time to detect tool operational state. By analyzing temporal variations in temperature distribution patterns, the control unit can distinguish between rotating and stationary tool states, providing reliable process monitoring through parameter evolution rather than direct mechanical sensing.
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 and reliable tool detection and operation, improving the quality of food preparation by ensuring the correct tool is used and operated correctly, thus enhancing the appliance's reliability, especially during guided cooking functions.
Implementation Method 1
The appliance comprises a temperature sensor (e.g., an Infrared (IR) based sensor and/or a resistance-based sensor) configured to provide measurement data regarding the temperature of the content
Data Source
Figure 1a~1b
Figure 2~4
AI summary
A control unit (101) for an appliance (100) is described, wherein the appliance (100) comprises a receptacle (104) for taking up content (200) and a temperature modification unit (105) for modifying a temperature (302) of the content (200) within the receptacle (104). The appliance (100) is configured to operate a tool (107) to process the content (200) within the receptacle (104). Furthermore, the appliance (100) comprises a temperature sensor (106) configured to provide measurement data regarding the temperature (302) of the content (200). The control unit (101) is configured to determine, based on measurement data provided by the temperature sensor (106), a temperature signal (311, 312) indicative of the temperature (302) of the content (200) within the receptacle (104) as a function of time (301), during operation of the temperature modification unit (105) for modifying the temperature (302) of the content (200) within the receptacle (104). Furthermore, the control unit (101) is configured to determine tool information regarding the tool (107) and/or regarding operation of the tool (107), based on the temperature signal (311, 312).