Driving Evaluation System Using Vehicle Sensors for Stop Sign Compliance
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Solution Overview
Problem
Existing systems for evaluating driving behavior at intersections with stop signs rely on cameras to confirm driver safety, which is not feasible without camera installation.
Innovation Solution
A driving evaluation system that acquires vehicle speed and position information to determine if a vehicle is approaching an intersection with a stop sign, and evaluates driving behavior based on stop duration or passage speed without requiring a camera.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a camera is installed in the vehicle cabin to shoot images of the driver's face for evaluating safety confirmation behavior, then the evaluation accuracy is improved, but the device complexity and installation requirements increase
Solution Approach 1:
The patent extracts the essential evaluation function from the camera system and implements it using existing vehicle sensors (speed sensor, GPS, navigation system). By taking out the core evaluation logic and separating it from the camera hardware requirement, the system achieves accurate evaluation without the complexity of installing and maintaining camera infrastructure.
Solution Approach 2:
The patent replaces the optical-mechanical camera system with an information-processing system that uses vehicle speed data, position data, and navigation information to infer driver behavior. This substitution eliminates the need for physical camera hardware while maintaining evaluation capability through computational analysis of existing sensor data.
2Device complexity
If only stop presence is detected to evaluate driver behavior, then the evaluation system is simple, but the evaluation accuracy is insufficient
Solution Approach 1:
The patent makes the evaluation system multi-functional by using existing vehicle sensors and navigation data for multiple purposes: detecting stop presence, measuring stop duration, calculating approach speed, and determining intersection entry timing. This universality allows accurate evaluation without adding specialized hardware, as existing components serve multiple evaluation functions simultaneously.
Solution Approach 2:
The patent performs preliminary data collection and processing using existing vehicle systems before the actual evaluation moment. By continuously gathering speed, position, and navigation data in advance, the system prepares comprehensive evaluation information that enables accurate assessment of driver behavior at intersections without requiring real-time complex processing.
Data Source
AI summary
The communication device acquires, from the vehicle, vehicle speed information indicating the vehicle speed and position information indicating the position of the vehicle. The determining unit determines whether or not the vehicle is approaching the intersection with the stop sign based on the position information. When the determining unit determines that the vehicle is approaching the intersection with the stop sign, the evaluation unit evaluates the driving behavior of the driver of the vehicle based on the length of time that the vehicle has stopped at the intersection with the stop sign or the speed at which the vehicle passes through the intersection with the stop sign.