Vehicle-Mounted Communication Device for Pedestrian Recognition
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Solution Overview
Problem
In pedestrian-to-vehicle communication systems, when the surrounding area is crowded with vehicles and pedestrians, communication traffic increases, leading to difficulties in information reaching vehicle-mounted devices, which can result in drivers overlooking pedestrians not belonging to a pedestrian group, potentially causing traffic accidents.
Innovation Solution
A vehicle-mounted communication device that includes a receiver to identify whether a pedestrian belongs to a pedestrian group, a controller to issue commands for presenting pedestrian attention information and transmitting vehicle approach information, and an information outputter to notify the driver of pedestrians not in a group, ensuring frequent data transmission to prevent oversight.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If data transmission frequency is increased for all pedestrians to ensure information reaches the vehicle, then communication reliability is improved, but communication traffic increases causing information delay or loss
Solution Approach 1:
The patent applies local quality by differentiating transmission parameters based on pedestrian group status. Pedestrians not belonging to any group (lonely pedestrians) use higher transmission frequency, data rate, or priority compared to pedestrians in groups. This localized differentiation ensures reliable communication for vulnerable pedestrians without unnecessarily increasing traffic from all pedestrians.
Solution Approach 2:
The system dynamically adjusts transmission parameters based on real-time conditions. The communication device determines whether a pedestrian belongs to a group and dynamically selects appropriate transmission frequency, data rate, or priority level. This dynamic adaptation allows the system to optimize communication reliability for vulnerable pedestrians while maintaining efficient traffic management.
2Productivity
If representative pedestrian transmits data more frequently to represent the pedestrian group, then communication efficiency is improved, but data from individual pedestrians cannot reach the vehicle
Solution Approach 1:
The patent applies partial action by having only necessary pedestrians transmit data. Instead of requiring all pedestrians (including group members) to transmit frequently, only lonely pedestrians without group representation transmit with high frequency. This partial transmission approach maintains communication efficiency while ensuring individual pedestrian information reaches the vehicle.
3Reliability
If transmission priority is increased for lonely pedestrians to prevent oversight, then safety is improved, but communication traffic management becomes more complex
Solution Approach 1:
The system performs preliminary classification of pedestrians into group members and lonely pedestrians before data transmission. By determining group affiliation in advance, the system can pre-assign appropriate transmission priorities and parameters. This preliminary action simplifies subsequent communication control by establishing clear transmission rules based on pre-determined pedestrian categories.
Data Source
AI summary
Disclosed is a vehicle-mounted communication device that carries out radio communications with a communication device for pedestrians which is carried by a pedestrian, the vehicle-mounted communication device including: a receiver that receives pedestrian information showing whether the pedestrian belongs to a pedestrian group formed of the pedestrian and a plurality of pedestrians in the vicinity of the pedestrian from the communication device for pedestrians; a controller that judges the pedestrian information received by the receiver and issues a command to present pedestrian attention information when the pedestrian information shows that the pedestrian does not belong to a pedestrian group; and an information outputter that presents the pedestrian attention information according to the command from the controller. Therefore, the vehicle-mounted communication device enables the driver to certainly recognize the existence of a pedestrian not belonging to a pedestrian group.