Refrigerator
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Solution Overview
Problem
Existing refrigerator voice recognition systems continuously perform voice recognition when the door is open, requiring manual user intervention to stop the process, leading to unnecessary recognition if the user forgets to do so.
Innovation Solution
A refrigerator with a voice acquisition unit, door opening and closing detection unit, and voice recognition control unit that only performs voice recognition when the acquired voice data meets predetermined start conditions, such as interrogative phrases or specific keywords, and stops recognition when end conditions are met, eliminating the need for manual user intervention.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If voice recognition is continuously performed when the door is open, then the user is notified that voice recognition is in operation, but the user must perform manual operation to stop voice recognition, leading to unnecessary recognition if forgotten
Solution Approach 1:
The voice recognition system automatically starts and stops based on door opening/closing events without requiring manual user intervention. The control unit detects door events and autonomously manages the voice recognition state, making the system self-serving and eliminating the need for users to manually stop recognition.
Solution Approach 2:
The control unit prepares the voice recognition system in advance by detecting door opening events and automatically activating voice recognition. Similarly, it detects door closing events and pre-empts the need for manual stopping by automatically deactivating recognition, thus performing necessary actions before user intervention would be required.
2Reliability
If voice recognition is continuously performed, then voice acquisition is maintained, but energy is consumed unnecessarily when recognition is not needed
Solution Approach 1:
Instead of continuous voice recognition operation, the system uses periodic activation triggered by door opening and closing events. Voice recognition is activated only during relevant periods (when door is opened) and deactivated during irrelevant periods (when door is closed), reducing unnecessary energy consumption while maintaining reliability when needed.
3Ease of operation
If voice recognition is automatically controlled based on door events, then manual operation is eliminated, but the system complexity increases
Solution Approach 1:
The control unit performs multiple functions: it detects door opening/closing events, determines voice recognition start/stop conditions, and manages the voice recognition operation. By making the control unit universal and multi-functional, the patent avoids adding separate dedicated components for each function, thereby minimizing the increase in system complexity while achieving automatic control.
Data Source
AI summary
In a refrigerator, when a door switch detects opening of a door of the refrigerator, a voice recognition control unit determines whether voice data acquired by a voice acquisition unit satisfies a predetermined voice recognition start condition. In a case where the voice recognition start condition is satisfied, the recognition control unit controls the voice recognition unit to perform voice recognition. However, in a case where the voice recognition start condition is not satisfied, the recognition control unit controls the voice recognition unit not to perform voice recognition.