Branching Path Access Control for Traveling Vehicles
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Solution Overview
Problem
Conventional traveling vehicle systems face inefficiencies in allowing vehicles to pass through branching parts due to blocking mechanisms that prevent multiple vehicles from entering a lock point, even when the situation does not hinder passage.
Innovation Solution
A traveling vehicle system and control method that sets specific areas within blocking areas at branching points, allowing vehicles to request and acquire passage permissions if no other vehicles are present, enabling efficient passage through branching parts by managing vehicle entry and exit permissions dynamically.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple vehicles are controlled to travel in formation using related art techniques, then coordination between vehicles is achieved, but the system lacks adaptability when abnormal conditions occur and cannot dynamically adjust formation patterns
Solution Approach 1:
The control system dynamically adjusts formation patterns based on real-time conditions. The manager vehicle can change formation types (single file, double file, V-formation, echelon) and individual vehicles can dynamically adjust their positions and speeds according to their operational status, making the system adaptive rather than static
Solution Approach 2:
Each vehicle is equipped with sensors and processors that enable autonomous detection of abnormal conditions (engine failure, loss of propulsion) and self-reporting to the manager vehicle. The system uses distributed intelligence where vehicles independently monitor their own status and contribute to collective formation maintenance
2Adaptability or versatility
If vehicles maintain fixed formation patterns, then coordination is simplified, but the system cannot respond to changing environmental conditions or vehicle abnormalities
Solution Approach 1:
The system implements continuous feedback loops where vehicles transmit status information (position, speed, operational state) to the manager vehicle, which processes this data and sends updated formation commands. This closed-loop control enables automatic adaptation to environmental changes and vehicle abnormalities while maintaining operational simplicity
Solution Approach 2:
The control system dynamically modifies formation parameters (inter-vehicle distances, speeds, angles) based on real-time conditions. When environmental conditions change or vehicles experience abnormalities, the system adjusts these parameters automatically to maintain safe and efficient formation patterns
3Reliability
If the manager vehicle continuously monitors and adjusts all follower vehicles, then formation coordination is maintained, but communication bandwidth is excessive and system complexity increases
Solution Approach 1:
The control system is segmented into a manager vehicle that handles high-level formation decisions and follower vehicles that handle local position maintenance and status reporting. This division of responsibilities reduces the communication burden on any single vehicle while maintaining overall formation reliability
Solution Approach 2:
The system implements selective monitoring where the manager vehicle focuses communication efforts on vehicles that deviate from expected behavior or report abnormalities. Normal vehicles operate with minimal communication overhead, transmitting only essential status updates, thus reducing overall communication bandwidth requirements
Data Source
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AI summary
[Problem] To allow traveling vehicles to efficiently pass through a branching part. [Means to Solve Problem] A traveling vehicle system SYS having: a traveling path R including a branching part Br; a traveling vehicle 100 that travels on the traveling path R, and a controller 200, wherein a specific area SA through which the traveling vehicle 100 is allowed to pass on one of the traveling paths R from an upstream side to a downstream side of the branching part Br is set in a part within a blocking area BA set to include the branching part Br, the controller 200 transmits a passage permission for the blocking area BA to the traveling vehicle 100 that issued the passage request for the blocking area BA if no other traveling vehicle 100 is present in the blocking area BA, and transmits a passage permission for the specific area SA to the traveling vehicle 100 that issued the passage request for the specific area SA if no other traveling vehicle 100 is present in the specific area SA, and the traveling vehicle 100 enters the blocking area BA or the specific area SA for which a passage permission has been acquired.