• Title/Summary/Keyword: Recognize Yard Tractor

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Development of Infrared-Ray Communication System for Position Recognition of Yard Tractor in Container Terminal (컨테이너터미널 내의 야드 트랙터 위치인식을 위한 적외선 통신시스템 개발)

  • Hong, Dong-Hee;Kim, Chang-Gon
    • Journal of Digital Convergence
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    • v.11 no.1
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    • pp.211-223
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    • 2013
  • In Korea, the location of yard tractors is figured out in real time by using RFID system in container terminals. However, even though the location recognition of RFID system works fine when transfer crane is in yard operation, there are some problems when container crane is in ship operation. That is because yard tractors come one by one to each transfer crane in an order, but yard tractors come in 4 lanes to the container crane, which makes the system impossible to recognize each yard tractor separately. Therefore, we developed the infrared-ray communication system which can recognize yard tractors accurately in not only in the yard operation of transfer crane but also in the ship operation of container crane in same way in this study. The result in this study showed constant number of recognition, and the range of recognition measures 5.7m in 25m distance. The range of recognition shown in this study is enough to recognize each yard tractor passing under container crane separately.

A Recognition Method of Container ISO-code for Vision & Information System in Harbors (항만 영상정보시스템 구축을 위한 컨테이너 식별자 인식)

  • Koo, Kyung-Mo;Cha, Eui-Young
    • Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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    • 2007.06a
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    • pp.721-723
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    • 2007
  • Recently, the size and location of the acquired container image while the container is loading and unloading in Harbors is not fixed. And it is difficult to get a good image for recognition because of the variation of external environment as those the size of container and where the yard-tractor stop is. In this paper, we estimate where the container ISO-code set is using Top-hat transform from realtime images and get an image to recognize container ISO-code using PAN/TILT/ZOOM camera. We extract the container ISO-code using Top-hat transform and Histogram projection. After binarization, we extract each character from complex background using labeling. We use BP(Backpropagation Network) to recognize extracted characters.

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Improvement of wireless communications environment of Web-pad on board Yard tractor in container terminal use convergence technology (융복합 기술을 이용하는 컨테이너 항만에서 야드 트랙터에 탑재된 웹-패드의 무선통신 환경 개선 방안)

  • Hong, Dong-Hee;Kim, Chang-Gon
    • Journal of Digital Convergence
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    • v.13 no.8
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    • pp.281-288
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    • 2015
  • The container terminals use convergence technology that exchange information for cargo work, using wireless communication between the TOS(Terminal Operations System) and the handling equipments(CC, TC, YT). But if the container cargoes pile up high in the container yard, delayed cargo work and cargo working list information error happen because of communication dead spots(the worker can not receive the information) which wireless communication is disconnected. At this time the driver of the yard tractor(YT) must be able to recognize the communication state. If then, delayed cargo work and cargo working list information errors that occur in the shaded communication area can be avoided, and can process the delayed work due to wireless communication break. In this project, we have built wireless communication environment to increase the efficiency of the loading and unloading operations which the operator can respond actively, when the work is delayed and work orders result in errors. That is, the flow of the wireless communication module has been changed.