VEHICLE TRAVEL CONTROL SYSTEM AND FLEET MANAGEMENT SERVER

摘要

To provide a technology that enables dump trucks to travel smoothly even in a mine where electromagnetic wave conditions are bad. The invention is a vehicle travel system in which haulage vehicles 20 traveling in a premise of a mine along predetermined travel routes 60 and a fleet management server for managing operations of haulage vehicles are connected in communication together via wireless communication network and that sets a travel-permitted segment n+1 so that difference between a communication timing at which the haulage vehicle 20-1 transmits permission request information to the fleet management server from a provisional permission-requesting point RP and communication timing at which other haulage vehicle transmits the permission request information to the same wireless base station may become more than or equal to a predetermined threshold value.

主权项

1. A vehicle travel control system in which a plurality of haulage vehicles traveling in a premise of a mine along predetermined travel routes and a fleet management server for controlling operations of the plurality of haulage vehicles are connected in communication to one another via wireless base stations, comprising:
a travel-permitted segment setting unit that sets a partial segment on the travel routes as a travel-permitted segment where each haulage vehicle is permitted to travel for each of the plurality of haulage vehicles, and calculates a permission-requesting point that is in the travel-permitted segment and is a point to transmit permission request information for requesting setting of a next travel-permitted segment located in front of the travel-permitted segment; a communication timing calculation unit for calculating a communication timing at which the permission request information is transmitted from the each haulage vehicle to the fleet management server via the wireless base station; and a communication timing determination unit for determining whether difference between the communication timing at which one haulage vehicle among the plurality of haulage vehicles transmits the permission request information and the communication timing at which the other haulage vehicle among the plurality of haulage vehicles transmits the permission request information to the same wireless base station is more than or equal to a predetermined threshold value, wherein the travel-permitted segment setting unit temporarily sets the travel-permitted segment to the one haulage vehicle, and calculates a provisional permission-requesting point corresponding to the temporarily set travel-permitted segment, the communication timing calculation unit calculates the communication timing at which the permission request information is transmitted from the provisional permission-requesting point, the communication timing determination unit determines whether the difference between the communication timing at which the one haulage vehicle transmits the permission request information from the provisional permission-requesting point and the communication timing at which the other haulage vehicle transmits the permission request information is more than or equal to the predetermined threshold value, and the travel-permitted segment setting unit sets the temporarily set travel-permitted segment as a normal travel-permitted segment when the difference of the communication timings is more than or equal to the predetermined threshold value.