Keyboard Fatigue Detection to Prevent Drowsy Input Errors
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Solution Overview
Problem
Users experience increased myopia and fatigue when using electronic devices for extended periods, and accidental keyboard inputs can occur due to drowsiness, leading to unintended document modifications.
Innovation Solution
An electronic device equipped with a keyboard, key detection circuit, processing circuit, and display screen that detects key pressing states and user behavior to determine fatigue, sending reminders to take breaks or adjust device usage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Duration of action of moving object
If users spend extended time using electronic devices, then device usage duration increases, but user fatigue and myopia risk increase
Solution Approach 1:
The system performs preliminary detection of user fatigue states through keyboard input monitoring before harmful effects fully manifest. By detecting reduced typing speed, increased error rates, or unusual typing patterns, the system proactively issues reminders to take breaks, preventing fatigue-related harm rather than responding after damage occurs.
Solution Approach 2:
The system establishes a feedback loop where user keyboard interactions are continuously monitored, analyzed for fatigue indicators, and converted into actionable reminders. This closed-loop feedback mechanism allows the system to adapt to user states in real-time, providing timely interventions that balance extended usage with fatigue prevention.
2Productivity
If users operate devices while fatigued, then device productivity is maintained, but accidental inputs and errors increase
Solution Approach 1:
The system detects fatigue indicators such as decreased typing speed, increased pause duration, or repetitive error patterns before accidental inputs occur. By issuing preliminary reminders to take breaks or verify inputs, the system prevents reliability degradation while maintaining productivity during early fatigue stages.
Solution Approach 2:
The system continuously monitors keyboard input quality metrics and provides real-time feedback when accuracy deteriorates. This feedback mechanism allows users to correct their state before significant errors occur, maintaining both productivity and reliability by intervening at the earliest signs of fatigue-related degradation.
3Object-affected harmful factors
If fatigue detection and reminder functions are added, then user safety and health are improved, but device complexity increases
Solution Approach 1:
The system utilizes the keyboard, an existing device component, to perform dual functions: normal input processing and fatigue detection. By analyzing patterns in regular keyboard usage without requiring separate sensors or hardware, the system achieves fatigue monitoring while minimizing additional device complexity.
Solution Approach 2:
The keyboard detection circuit is designed to serve multiple purposes: standard input detection and fatigue pattern recognition. This multi-functional approach allows the same hardware to support both productivity and health monitoring functions, avoiding the need for dedicated fatigue detection hardware and reducing overall device complexity.
Data Source
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AI summary
An electronic device with a fatigue detection function is provided and includes a keyboard, a key detection circuit, a first processing circuit, a control circuit, and a display screen. The keyboard includes at least one key. The key detection circuit detects the pressing state of the key to generate a first detection signal. The first processing circuit converts the first detection signal to a first processing signal. The control circuit determines whether a specific event occurs according to the first processing signal. In response to the specific event, the control circuit sends a reminder signal. The display screen displays a reminder image according to the reminder signal.