Domestic cooking device and method for operating such a device
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Solution Overview
Problem
Existing household cooking appliances require high computing effort and storage requirements to determine the remaining cooking time and end of cooking time, making them inefficient.
Innovation Solution
A household cooking appliance with a cooking sensor, a first data memory for storing measurement curves, and a second data memory for storing reduced sets of coefficients from discrete transformations of reference curves, allowing for efficient comparison and calculation of cooking times using a microcontroller.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If full reference curves are stored in memory for comparison, then measurement precision is improved, but device complexity increases due to high storage requirements
Solution Approach 1:
The patent extracts only the essential characteristics of reference curves by storing them as coefficient sets rather than complete curves. This allows the system to retain the ability to accurately compare and identify cooking stages while dramatically reducing the storage burden from full curve data to compact coefficient representations.
Solution Approach 2:
Instead of storing complete reference curves and comparing them directly, the patent inverts the approach by storing transformed coefficient representations and comparing these compressed forms. This inversion of the storage and comparison methodology achieves both reduced storage requirements and maintained comparison accuracy.
2Measurement precision
If complete reference curves are stored and compared, then measurement precision is improved, but computing effort increases
Solution Approach 1:
The patent extracts only the essential characteristics of reference curves by storing them as coefficient sets rather than complete curves. This allows the system to retain the ability to accurately compare and identify cooking stages while dramatically reducing the storage burden from full curve data to compact coefficient representations.
Solution Approach 2:
Instead of storing complete reference curves and comparing them directly, the patent inverts the approach by storing transformed coefficient representations and comparing these compressed forms. This inversion of the storage and comparison methodology achieves both reduced storage requirements and maintained comparison accuracy.
3Measurement precision
If more data is stored for accurate cooking time determination, then measurement precision is improved, but loss of substance increases due to higher memory consumption
Solution Approach 1:
The patent extracts only the essential characteristics of reference curves by storing them as coefficient sets rather than complete curves. This allows the system to retain the ability to accurately compare and identify cooking stages while dramatically reducing the storage burden from full curve data to compact coefficient representations.
Solution Approach 2:
The patent changes the parameter representation from storing complete curve data points to storing transformed coefficient sets. This parameter transformation maintains the essential information needed for accurate cooking time determination while significantly reducing the amount of memory resources consumed.
Data Source
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AI summary
A household cooking appliance (GG) comprises at least one cooking sensor (S) for recording cooking measurements (MW), a first data storage device (DS1) for storing the cooking measurements (MW) as at least one measurement curve (MK), a second data storage device (DS2) in which several references (RK1-RK4) are stored, and a data processing device (DV) for comparing at least one measurement curve (MK) with the associated references (RK1-RK4), wherein the references (RK1) are reduced sets of coefficients of a discrete transformation of a respective reference curve (RK1-RK4). A method serves to operate a household cooking appliance (GG) in which a measurement curve (MK) recorded by means of a cooking sensor (S) of the household cooking appliance (GG) is compared with several references, wherein references are stored in the household cooking appliance (GG) as reduced sets of coefficients of a discrete transformation of a respective reference curve (RK1-RK4).The invention is particularly advantageously applicable to determining the end of a cooking time, especially by means of an oxygen sensor located on or in a cooking chamber.