Driver Condition Detection via Motion Follow-Up Degree
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Solution Overview
Problem
Existing driver condition detection systems fail to detect deteriorated physical conditions at an early stage, often only identifying changes after they have progressed, which can compromise safety.
Innovation Solution
A driver condition detection device that includes a vehicle detector, a driver detector, a calculator to determine the follow-up degree of the driver's motion relative to the vehicle's motion, and a physical condition determination portion to assess the driver's condition based on this follow-up degree, using acceleration and gravity-center-position data to identify potential deterioration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If driving position detection is used to estimate deteriorated physical condition, then detection can be performed using simple sensors, but detection occurs only after condition has progressed significantly
Solution Approach 1:
The system performs preliminary detection of physical condition deterioration by monitoring motion follow-up degree before the driver's condition progresses to a critical state. By continuously calculating the follow-up degree between vehicle acceleration and driver response, the system identifies early signs of deterioration such as delayed reaction or reduced motion amplitude, enabling intervention before severe impairment occurs.
Solution Approach 2:
The system establishes a feedback loop by continuously measuring the driver's motion response to vehicle acceleration and comparing it against expected normal response patterns. The calculator computes the follow-up degree as a quantitative metric that feeds back to the determination portion, which then triggers appropriate warnings or notifications when deterioration is detected, creating a closed-loop monitoring system.
2Reliability
If early detection of physical condition deterioration is implemented, then driver safety is improved, but detection accuracy must be maintained to avoid false alarms
Solution Approach 1:
The system monitors changes in the follow-up degree parameter, which represents the relationship between vehicle acceleration and driver motion response. By tracking variations in this parameter over time and comparing against threshold values or historical baselines, the system can distinguish between normal variations and genuine signs of physical deterioration, thereby maintaining detection accuracy while enabling early warning.
3Measurement precision
If follow-up degree calculation is performed continuously, then early detection capability is enhanced, but computational load and processing time increase
Solution Approach 1:
The system extracts only the essential information needed for detection by focusing calculation on the follow-up degree metric derived from acceleration data. Rather than analyzing all possible motion parameters, the system isolates and processes the specific relationship between vehicle acceleration and driver response, reducing computational complexity while maintaining early detection capability.
Data Source
AI summary
A driver's physical condition detection device for detecting a physical condition of a driver driving a vehicle, includes: a vehicle detector configured to detect a change in motion of the vehicle during driving; a driver detector configured to detect a change in motion of the driver; a calculator configured to calculate a follow-up degree of the change in motion of the driver with respect to the change in motion of the vehicle during driving; and a physical condition determination portion configured to perform a determination process of determining whether or not the physical condition of the driver is deteriorated, based on the follow-up degree.