Intersection Warning System Using Sensor Fusion
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Solution Overview
Problem
Conventional reflectors, yellow flashing lights, and markings at intersections are ineffective in poor visibility conditions, such as cloudy or rainy days, and are easily obscured, reducing their ability to protect road users.
Innovation Solution
An intersection warning system based on information fusion, which includes an intersection sensing device, a computing device, a user device, and a cloud server that calculates a fusion risk assessment value using on-site sensing and background information to send warning messages to users when the risk of an accident is high.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional reflectors, yellow flashing lights, red flashing lights and markings are deployed at intersections, then road users can be reminded to slow down or stop, but their effectiveness is greatly reduced in poor visibility conditions such as cloudy and rainy days or when obscured by signage or road trees
Solution Approach 1:
The patent replaces passive mechanical warning devices (reflectors, static lights, markings) with an active electronic information system that uses sensors, processors, and communication devices to detect road conditions and deliver personalized warnings to users via mobile devices, overcoming the limitations of visual obstruction
Solution Approach 2:
The patent introduces mobile devices as intermediaries between the road environment and road users, transmitting warning information electronically rather than relying on direct visual perception of physical warning devices, thus bypassing visibility limitations
2Reliability
If conventional static warning devices are used at intersections, then the system structure is simple and easy to deploy, but the alertness of road users is insufficient when visibility is poor
Solution Approach 1:
The patent utilizes mobile devices that users already possess for multiple functions including communication, navigation, and now receiving intersection warnings, avoiding the need for dedicated complex warning infrastructure while achieving reliable user alertness
Solution Approach 2:
The system leverages users' own mobile devices and positioning systems to deliver personalized warnings, eliminating the need for complex centralized control infrastructure while maintaining high reliability in alerting road users
Data Source
AI summary
An intersection warning system based on information fusion and a method thereof, the system includes an intersection sensing device, an intersection computing device, a user device and a cloud server. The cloud server receives and stores on-site sensing information output from the intersection computing device and determines whether user positioning coordinates are received from the user device, if so, the cloud server reads the on-site sensing information and at least one background information, and calculates a fusion risk assessment value based on the on-site sensing information, the at least one background information, and multiple weightings; when the cloud server determines the fusion risk assessment value is greater than a threshold value, a warning command is output to the user device which sends out warning messages according to the warning command.