Dynamic Task Output Threshold for Driver Cognitive Load
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Solution Overview
Problem
Existing information processing systems for mobile units, such as vehicles, face challenges in presenting tasks to drivers without distracting them from their primary task of driving, especially when the driver's attention is already compromised by high driving loads or limited response time requirements.
Innovation Solution
An information processing system that includes a task acquisition unit, a load identification unit, and an output determination unit to assess the driving load and calculate a response expected time for tasks, determining whether to output tasks based on a threshold value adjusted according to the driving load and learning level of the driver, ensuring that only tasks with longer response times are presented during high driving loads.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If a task is presented to the driver with a limited response time, then the driver can respond quickly to the task, but the driver's concentration on driving actions is reduced
Solution Approach 1:
The patent dynamically adjusts the response time threshold based on the driver's current state (detected through cameras, sensors, or user profiles). When the driver is in a relaxed state, shorter response times are acceptable; when stressed or fatigued, the system requires longer response times or defers task presentation. This dynamic adaptation resolves the contradiction by making response time requirements flexible rather than fixed.
Solution Approach 2:
The system changes the parameter of response time threshold based on detected driver conditions. The output determination unit modifies the acceptable response time window according to driver stress levels, fatigue indicators, or learned user patterns, thereby balancing quick response needs with driving safety requirements.
2Productivity
If a task is presented to the driver during high driving load, then the driver can complete the task, but the driver's attention to driving operations is excessively dissipated
Solution Approach 1:
The system continuously monitors driver state through cameras, sensors, and interaction patterns to detect high driving load conditions. When high load is detected, the output determination unit uses feedback about the driver's current capacity to decide whether to present tasks, thereby preventing task overload during critical driving periods.
Solution Approach 2:
The system performs preliminary assessment of driver capacity before presenting tasks. The output determination unit evaluates whether the driver can handle additional tasks by analyzing current driving load indicators, and only presents tasks when capacity is sufficient, preventing attention dissipation during high-load periods.
3Loss of time
If the response time threshold is set low, then tasks can be completed quickly, but tasks may be presented when the driver is too burdened
Solution Approach 1:
The response time threshold is dynamically adjusted based on real-time driver state assessment. When the driver appears burdened or stressed, the system increases the required response time threshold or defers task presentation, preventing unrealistic time demands during high-burden periods while maintaining quick response expectations during low-burden periods.
Data Source
AI summary
An information processing system includes a task acquisition unit configured to acquire a task to be presented to a driver, a load identification unit configured to identify a current driving load, and an output determination unit configured to determine whether the task is to be output to the driver or not. The output determination unit determines to output the task if a response expected time from output of the task to a response action by the driver is longer than a threshold value based on the driving load.