Wakefulness Induction Control Device with Periodic Actuation
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Solution Overview
Problem
Existing wakefulness induction control devices experience a decrease in effectiveness due to user accommodation with continuous use, leading to reduced wakefulness induction over time.
Innovation Solution
A wakefulness induction control device equipped with a sleepiness detector and a controller that actuates a wakefulness inducer only when a predetermined sleepiness level is reached and stops it after a set duration, preventing user accommodation by varying the actuation duration based on current time, driving duration, and number of actuations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the wakefulness inducer is continuously actuated to maintain wakefulness induction effect, then the wakefulness inducing effect is improved, but the user becomes accustomed to it and the effect decreases over time
Solution Approach 1:
The controller actuates the wakefulness inducer only during specific periods when sleepiness is detected, rather than continuously. The system monitors sleepiness levels and triggers wakefulness induction only when needed, creating periodic rather than continuous operation that prevents user accommodation while maintaining effectiveness
Solution Approach 2:
The system dynamically adjusts the actuation of the wakefulness inducer based on real-time sleepiness detection. The controller modifies operation timing and duration according to detected sleepiness levels, creating variable operation patterns that adapt to user needs while preventing habituation
2Reliability
If the wakefulness inducer is actuated for longer duration to ensure wakefulness, then the wakefulness inducing effect is improved, but energy consumption increases
Solution Approach 1:
The system applies partial action by actuating the wakefulness inducer only for the minimum necessary duration to achieve wakefulness induction. Rather than continuous operation, the controller provides just enough stimulation during detected sleepiness episodes, reducing energy consumption while maintaining effectiveness
Solution Approach 2:
The wakefulness inducer operates periodically based on sleepiness detection rather than continuously. This periodic operation pattern reduces total energy consumption by limiting actuation to specific periods when wakefulness induction is actually needed
3Device complexity
If the wakefulness inducer operates without time information notification to simplify the system, then device complexity is reduced, but user awareness of operation status decreases leading to mistaken failure perception
Solution Approach 1:
The system provides feedback to the user through time information notification that indicates the remaining duration of wakefulness inducer operation. This feedback mechanism keeps users informed about system status and prevents mistaken perception of failure while adding minimal complexity to the overall system
Data Source
AI summary
A wakefulness induction control device includes a sleepiness detector that detects a sleepiness level indicating a degree of sleepiness of a user; a controller that actuates a wakefulness inducer that induces wakefulness in the user when the sleepiness level detected by the sleepiness detector meets a predetermined reference, and stops the wakefulness inducer when a predetermined duration has passed after actuation of the wakefulness inducer, and an output that outputs actuating information of the wakefulness inducer. The actuating information includes time information indicating the duration left until the controller stops the wakefulness inducer.