Vehicle Pedestrian Notification System Position Matching
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Solution Overview
Problem
Existing systems fail to accurately associate pedestrian detection information with portable terminals, making it difficult to selectively alert pedestrians in the vicinity of a vehicle of potential danger.
Innovation Solution
A notification system that includes a detection device on the vehicle to detect pedestrian positions and transmit this information to portable terminals, which then notify the pedestrian of a message if their current position matches the detected position, with the option to respond and provide accuracy information on the position data.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If sensor detection information is transmitted to all portable terminals in the area, then pedestrian notification coverage is improved, but system complexity and false notification rate increase
Solution Approach 1:
The patent introduces a server as an intermediary between the detection device and portable terminals. The server receives detection information from the detection device, processes it to identify target pedestrians, and then transmits notifications only to the corresponding portable terminals. This mediator architecture simplifies the overall system by centralizing the matching logic and reducing the complexity burden from individual components.
Solution Approach 2:
The patent extracts the position matching function from the portable terminals and concentrates it in the server. Instead of requiring each portable terminal to independently compare its position with all detected pedestrian positions, the server performs this matching operation centrally, extracting only the necessary notification actions to send to specific terminals. This reduces computational complexity at the terminal level.
2Speed
If position matching is performed at each portable terminal, then notification responsiveness is improved, but energy consumption and computational load increase
Solution Approach 1:
The server performs position matching in advance by comparing detection information with position information from portable terminals before generating notifications. This preliminary action of pre-matching positions at the server side eliminates the need for portable terminals to perform computationally intensive matching operations, thereby reducing their energy consumption while maintaining rapid notification response.
Solution Approach 2:
The server acts as an intermediary that handles the computationally intensive position matching task. By centralizing this function, the server absorbs the computational load and energy requirements, allowing portable terminals to operate with lower energy consumption while still achieving rapid notification delivery through the server's pre-processed matching results.
3Reliability
If detection area is expanded to cover more potential pedestrian zones, then safety coverage is improved, but false positive rate and notification burden increase
Solution Approach 1:
The patent applies local quality by making the notification target specific rather than universal. Even though the detection device monitors a large area, the server processes detection information to identify specific local targets (individual pedestrians at risk) and sends notifications only to their corresponding portable terminals. This ensures that while coverage is extensive, each notification is highly relevant and targeted to the specific local situation.
Solution Approach 2:
The server as an intermediary filters and processes detection information from the expanded detection area, extracting only the relevant cases that require notification. It matches detected pedestrian positions with registered portable terminal positions to identify true targets, thereby preventing false positives and ensuring that notifications are sent only when genuinely necessary, maintaining high notification relevance despite broad coverage.
Data Source
AI summary
The notification system includes a detection device mounted on a vehicle and one or more portable terminals possessed by each of one or more pedestrians. The detection device detects the position of each pedestrian in a target area at a predetermined relative position to the vehicle, and transmits detection information including position information indicating the detected position to each of the one or more portable terminals. Each portable terminal receives the detection information transmitted from the detection device. When the current position of the portable terminal corresponds to any one of the detected positions indicated by the position information included in the transmitted detection information, each of the portable terminal notifies a pedestrian possessing the portable terminal of the message via the output device.