Roadside Traffic Communication System for Obstacle Detection

Resolve Bottlenecks,
Find Innovative SolutionsGenerate Solutions

Solution Overview

Problem

Existing Intelligent Transport Systems (ITS) struggle to effectively detect obstacles on roads, particularly in environments where vehicle-side sensors alone cannot detect them, leading to insufficient prevention of traffic accidents.

Innovation Solution

A traffic communication system comprising roadside sensors, devices, and servers that perform wireless communication to transmit detection information about obstacles to vehicles, switching between network communication and roadside-to-vehicle communication based on vehicle distance to ensure timely and efficient information delivery, thereby enhancing accident prevention.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If roadside sensors and dual communication methods are used to improve obstacle detection and information delivery, then traffic accident prevention is enhanced, but system complexity and resource consumption increase

Engineering Contradiction:

Improvetraffic accident preventionVSAvoidsystem complexity

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The communication system is segmented into two distinct communication paths: network communication for distant vehicles and roadside-to-vehicle communication for nearby vehicles. This segmentation allows each communication method to be optimized for its specific range, improving overall reliability without requiring a single complex system to handle all scenarios

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The system dynamically switches between network communication and roadside-to-vehicle communication based on the vehicle's distance from the roadside device. This dynamic adaptation ensures that the most appropriate communication method is used in each situation, enhancing information delivery reliability while managing system complexity through conditional logic

Inventive Principle:

Principle #15Dynamics

2Ease of manufacture

If network communication is used for all vehicles, then system implementation is simplified, but information delivery timeliness and efficiency decrease for nearby vehicles

Engineering Contradiction:

Improvesystem implementationVSAvoidinformation delivery timeliness

Core Design Contradiction:

Ease of manufactureVSLoss of time

Solution Approach 1:

Different communication qualities are applied based on local conditions: network communication is used for vehicles at a distance where direct communication is not feasible, while roadside-to-vehicle communication is used for nearby vehicles where direct communication provides superior timeliness. This local quality differentiation resolves the contradiction between implementation simplicity and delivery efficiency

Inventive Principle:

Principle #3Local quality

Solution Approach 2:

The roadside device acts as an intermediary that receives obstacle detection information and selectively forwards it through appropriate communication channels. For nearby vehicles, it serves as a direct mediator using roadside-to-vehicle communication, while for distant vehicles, it routes information through network communication infrastructure

Inventive Principle:

Principle #24Intermediary (Mediator)

3Loss of time

If roadside-to-vehicle communication is used for all vehicles, then information delivery timeliness is improved, but radio resource consumption increases unnecessarily

Engineering Contradiction:

Improveinformation delivery timelinessVSAvoidradio resource consumption

Core Design Contradiction:

Loss of timeVSLoss of energy

Solution Approach 1:

Instead of applying roadside-to-vehicle communication universally, the system applies it partially only to vehicles within the appropriate geographic range. This partial action ensures that radio resources are consumed only when necessary for nearby vehicles, while distant vehicles receive information through more resource-efficient network communication

Inventive Principle:

Principle #16Partial or excessive action

4Reliability

If detection information is transmitted to all vehicles regardless of distance, then comprehensive safety coverage is achieved, but processing and communication resources are wasted

Engineering Contradiction:

Improvesafety coverageVSAvoidprocessing resources

Core Design Contradiction:

ReliabilityVSLoss of energy

Solution Approach 1:

The system changes the communication parameter (communication method) based on the parameter of vehicle distance. By evaluating the distance parameter, the system selects the appropriate communication method, ensuring comprehensive safety coverage for all vehicles while optimizing resource usage by not applying the more resource-intensive communication method universally

Inventive Principle:

Principle #35Parameter changes

Data Source

PatentUS11783709B2Traffic communication system, roadside device, server, and traffic communication method

Publication Date: 2023.10.10 KYOCERA CORP

AI summary

A roadside device transmits, to a server, detection information indicating a detection result from a roadside sensor. In a case that a vehicle moving on a road toward the roadside device reaches a notification start point and that the vehicle is in a first geographic range, the server transmits the detection information received from the roadside device to the vehicle via the communication network. In a case that the vehicle moves from the first geographic range to a second geographic range located closer to the roadside device than the first geographic range, the roadside device transmits the detection information to the vehicle by the wireless communication.