Control of a household appliance
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Solution Overview
Problem
Current household appliances lack the ability for users to create or modify sequential programs independently, limiting their customization and safety, as they rely on pre-defined settings that do not account for specific user needs or appliance conditions.
Innovation Solution
A method that allows users to create and modify sequential programs for household appliances by checking predetermined appliance conditions, ensuring safe operation and preventing violations of safety parameters, which can be executed without requiring retrofits to the appliance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If users are allowed to create and modify sequential programs independently, then customization and adaptability are improved, but safety risks and operational reliability may deteriorate
Solution Approach 1:
The control apparatus checks appliance conditions before releasing the sequential program for execution. This preliminary verification ensures that user-created programs do not violate safety constraints such as maximum temperatures, pressures, or operational sequences, thereby maintaining reliability while allowing customization.
Solution Approach 2:
The system provides feedback by checking program conditions against predetermined appliance conditions and either releasing or blocking execution accordingly. This feedback mechanism ensures that only safe programs are executed, resolving the contradiction between user freedom and safety.
2Ease of operation
If users can create custom sequential programs, then ease of operation is improved, but device complexity increases
Solution Approach 1:
The control apparatus copies and executes received sequential programs after verifying they meet appliance conditions. This approach allows user-friendly program creation without requiring the appliance hardware itself to be complex, as the verification logic is implemented in software rather than hardware.
Solution Approach 2:
The control apparatus serves multiple functions: it receives programs, checks conditions, and executes approved programs. This multi-functionality is achieved through a single integrated control unit, avoiding the need for separate complex subsystems for each function.
3Reliability
If sequential programs are checked for appliance conditions, then reliability is improved, but productivity decreases due to additional verification steps
Solution Approach 1:
Condition checking is performed in advance before program execution is released. This preliminary action ensures that safety verification does not interrupt or delay the actual execution of approved programs, maintaining productivity while ensuring reliability.
Data Source
AI summary
A method for the process programming of a household appliance includes the following steps: receiving a sequential program by the household appliance; checking the sequential program with respect to a predetermined device condition by the household appliance; and releasing the sequence of the sequential program in the household appliance as a function of the result of the check.