NAN Positioning for Pedestrian Safety at Road Junctions
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Solution Overview
Problem
The increasing use of electronic devices has led to pedestrians being distracted and unaware of nearby vehicles, particularly at road junctions without traffic lights, posing safety hazards.
Innovation Solution
A method utilizing three Neighbor Awareness Network (NAN) devices at a road junction to accurately position both pedestrians and vehicles, determining their relative distance, and reminding the pedestrian when the distance is unsafe, thereby enhancing safety.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If pedestrians use electronic devices while crossing the road, then entertainment and communication needs are met, but safety awareness and awareness of nearby vehicles are reduced
Solution Approach 1:
The system provides real-time feedback to pedestrians about nearby vehicles through the electronic device. The processor receives position information from the electronic device and vehicle, calculates distance, and sends提醒 information back to the pedestrian, creating a closed-loop safety feedback mechanism that maintains entertainment functionality while ensuring safety awareness
Solution Approach 2:
The electronic device serves as an intermediary between the pedestrian and the surrounding environment. It collects position data, processes safety information, and communicates with the pedestrian, acting as a mediator that enables safety monitoring without requiring the pedestrian to physically observe the environment
2Measurement precision
If traditional positioning methods are used, then basic location information is obtained, but positioning accuracy and real-time awareness of approaching vehicles is insufficient
Solution Approach 1:
The system performs preliminary actions by continuously obtaining position information from both the electronic device and vehicle before any potential hazard occurs. The processor calculates distance in advance and prepares提醒 information, enabling early warning that provides sufficient reaction time for the pedestrian to avoid the vehicle
Solution Approach 2:
The system maintains continuous monitoring of position information and distance calculation throughout the pedestrian's crossing path. This continuous action ensures that the pedestrian is always aware of approaching vehicles, eliminating gaps in safety monitoring that would occur with intermittent checking
Data Source
Figure 1A
Figure 1B~1C
Figure 1D~1E
AI summary
A method for safe positioning and related products are provided. Three neighbor awareness network (NAN) devices at a road junction are determined, and a NAN among an electronic device and the three NAN devices is established, where each of the three NAN devices in the NAN locates at a fixed position (operations at 101). Positions of the electronic device and positions of a vehicle in a same plane coordinate map are obtained, where the electronic device and the vehicle are positioned by the three NAN devices, and determine that the vehicle is approaching the electronic device according to positional variations of the electronic device and the vehicle (operations at 102). A distance between the electronic device and the vehicle is determined according to the positions of the electronic device and the positions of the vehicle, and reminding information is outputted in response to that the distance is smaller than a preset threshold, where the reminding information is used for reminding a holder of the electronic device to avoid the vehicle (operations at 103). As such, the vehicle and the electronic device can be position through the NAN to determine the distance between the pedestrian holding the electronic device and the vehicle. When the vehicle is approaching the pedestrian and the distance is relatively short, the pedestrian may be reminded to ensure the safety of the pedestrian.