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In this study, fleet control technology that can maximize coordination between earthwork equipment such as excavators, bulldozers, graders, dump trucks and rollers and a site office is introduced. In order to enhance the performance of bucket and blade based equipment, machine guidance technology is employed. The site office plans and monitors the operation of the entire equipment set based on the communication between the construction control center and individual machines. This study consists of two parts. The first part aims at developing a construction control center ( . It is stationed in a site office and produces detailed and energy saving construction plan of earthwork equipment including zoning and path planning considering the characteristics of the site contour, design information and equipment fleet. Earthwork progresses are then monitored based on the communication, comprising the exchange of design and construction information in real time, between and the machine guidance systems installed in the individual machines. The second part is a study on the systemization of guidance technology to provide safe and efficient equipment operation.

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Abstract:A remote-controlled and automated concrete surface grinding machine is introduced in this paper. The machine is designed to grind the unsmoothed concrete surface of bridge decks, airport runways, and road pavement. The remote control was required because of the hazardous working condition created by the concrete dust. A graphical man-machine interface (MMI), a path planning system, and sensors including GPS and sonar made the precise and safe operation of the machine possible. The automated quality control system being developed currently would ensure the work quality of the machine by detecting uneven concrete surface and performing the required grinding work properly.