Vehicle Warning System Using Operating Action Timing to Infer Driver Attention
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing warning systems for motor vehicles do not comprehensively consider the reduction in a driver's attention level, often relying on costly and invasive methods to detect physiological values and eye movements, and fail to differentiate between accidental and intentional operating actions, leading to unjustified warnings.
Innovation Solution
A warning system that uses sensor devices and existing vehicle components to detect the duration and type of operating actions, categorizing them to infer the driver's attention level, with adjustable minimum durations and categories to differentiate between types of distractions, allowing for timely and context-specific warnings.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If physiological values and eye movements are detected to determine driver attention, then measurement precision of driver state is improved, but device complexity and cost increase significantly
Solution Approach 1:
The patent extracts only the essential information needed for driver attention detection from the complex physiological monitoring space. Instead of monitoring all physiological parameters, it focuses specifically on operating element interactions and secondary activities, extracting minimal but sufficient data to infer attention levels without requiring complex physiological sensors.
Solution Approach 2:
The patent replaces expensive, complex physiological detection systems with simpler, cheaper existing vehicle components. By using already-present operating elements (buttons, switches, controls) and basic sensors to detect their operation, the system achieves attention detection without investing in costly physiological measurement equipment.
2Reliability
If operating actions are monitored to infer driver attention, then false warnings are reduced, but measurement precision of driver state may be compromised
Solution Approach 1:
The patent implements feedback by continuously monitoring operating element interactions and using this information to adjust warning system behavior. The control device analyzes patterns of secondary activities and adjusts warning issuance accordingly, creating a closed-loop system that improves reliability through continuous adaptation to actual driver behavior patterns.
Solution Approach 2:
The patent applies preliminary action by establishing predetermined thresholds and patterns for operating element interactions that indicate reduced attention. The system pre-defines what constitutes a secondary activity and sets criteria for when warnings should be issued, allowing it to reliably distinguish between normal and concerning driver behaviors without real-time complex analysis.
3Reliability
If warnings are issued for any operating action sequence exceeding minimum duration, then driver safety is improved, but false warnings increase due to accidental actions
Solution Approach 1:
The patent applies partial action by not warning for every possible operating sequence, but only for those that meet specific criteria indicating genuine secondary activities. It selectively monitors and responds to particular patterns of operating element interactions that are characteristic of driver distraction, rather than reacting to all operating actions equally.
Solution Approach 2:
The system dynamically adjusts its warning behavior based on the specific pattern and context of detected operating actions. Rather than using fixed rigid thresholds, the control device evaluates sequences of operations and adapts warning issuance to the actual driver behavior pattern detected, allowing flexible response to different driving situations.
Data Source
AI summary
A warning system for a motor vehicle includes sensor devices for detecting a driving situation, a warning device for the output of a warning to a driver of the motor vehicle, a device for detecting the driver's state of attention that includes operating elements of existing vehicle components, and a control device which triggers the warning device as a function of data of the sensor devices and the device for detecting the state of attention. In this warning system, the device for detecting the state of attention infers a reduced degree of driver attention when a total duration of a sequence of several operating actions related to the operating elements exceeds a minimum duration. A conclusion can also be drawn that the degree of driver attention is reduced when operating inputs are triggered that are known a priori as being cognitively demanding, for example, operating a telephone keypad.