Regulatory Information Notifying Device Using Sensor Fusion
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Solution Overview
Problem
Existing systems for displaying regulatory information on vehicles, such as road signs and markings, face challenges in reliability due to potential misidentification when signs are obscured or when road-to-vehicle communication fails, leading to inaccurate or delayed notifications.
Innovation Solution
A regulatory information notifying device that combines image capturing and road-to-vehicle communication to prioritize notifications based on detected regulatory information, ensuring accurate and timely display of speed limit and other traffic information by using a camera and radio receiver to cross-validate data.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If regulatory information is detected using only image capturing from road signs, then the system can identify visual traffic information, but misidentification occurs when signs are obscured or partially erased
Solution Approach 1:
The patent combines two detection methods (image capturing and road-to-vehicle communication) into a unified system that cross-validates regulatory information from both sources to determine the most reliable notification, thereby resolving the contradiction between detection reliability and information accuracy
2Measurement precision
If regulatory information is detected using road-to-vehicle communication, then accurate speed limit information can be obtained, but the system cannot detect other types of regulatory information such as stop signs
Solution Approach 1:
The system merges road-to-vehicle communication (providing accurate speed limit data) with image capturing (providing diverse regulatory information coverage) to achieve both high accuracy for speed limits and comprehensive detection coverage for all regulatory information types
3Measurement precision
If the system prioritizes road-to-vehicle communication for all regulatory information, then speed limit accuracy improves, but other regulatory information from image capture may be ignored
Solution Approach 1:
The system applies different prioritization strategies to different types of regulatory information: road-to-vehicle communication data is prioritized for speed limit information due to its higher accuracy, while image capturing data is used for other regulatory information types such as stop signs and no parking zones where communication data may not be available
Data Source
AI summary
The regulatory sign or traffic information presented on a roadway is detected by capturing an image of ahead of a vehicle, and also the regulatory information is detected by receiving a signal transmitted from outside the vehicle. When the regulatory information is detected from the signal transmitted from outside the vehicle, that regulatory information is notified. When no regulatory information is detected from the signal transmitted from outside the vehicle, the regulatory information detected by capturing the image of ahead of the vehicle is notified.