Infrastructure Unit Road User Alert via Bluetooth Low Energy
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Solution Overview
Problem
Existing safety systems for vulnerable road users, such as pedestrians and cyclists, lack effective mechanisms to alert drivers of their presence at intersections, leading to potential accidents.
Innovation Solution
The implementation of a method and system where infrastructure units, equipped with sensors and Bluetooth communication capabilities, detect the presence of vulnerable road users and transmit alert messages to nearby vehicles via Bluetooth Low Energy (BLE) technology.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If infrastructure units use sensor units to detect vulnerable road users and transmit alerts via Bluetooth, then the safety of vulnerable road users is improved, but the device complexity and infrastructure cost increase
Solution Approach 1:
The system divides the safety function into separate components: sensor units for detection, infrastructure units for message composition and transmission, and receiving devices for alert delivery. This segmentation allows each component to be optimized independently while improving overall system reliability for vulnerable road user safety.
Solution Approach 2:
The infrastructure unit acts as an intermediary between sensor units that detect vulnerable road users and receiving devices in vehicles. It receives sensor data, composes alert messages, and transmits them via Bluetooth, thereby improving safety without requiring direct complex integration between all system components.
2Use of energy by moving object
If Bluetooth Low Energy technology is used for communication between infrastructure units and vehicles, then the energy consumption is reduced, but the communication range and reliability may be limited
Solution Approach 1:
The system uses Bluetooth Low Energy technology which operates at lower power consumption parameters compared to traditional Bluetooth. By adjusting communication parameters and using proximity-based alert transmission, the system maintains reliable communication for safety-critical alerts while minimizing energy consumption of infrastructure units and receiving devices.
Data Source
AI summary
A method at an infrastructure unit of signaling a presence of a vulnerable road user, the method including receiving at least one report from a sensor unit, the at least one report indicating the presence of the vulnerable road user; composing a message indicating the presence of the vulnerable road user; and transmitting the message to road users proximate the infrastructure unit on a channel.