• 제목/요약/키워드: Tele-conference

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ER유체를 이용한 수술용 원격 제어 시스템의 힘 반사 제어부에 관한 연구 (A Study on Force Reflection Controller of Tele-Surgery Control System using ERF)

  • 신진오;이은준;박명관
    • 한국정밀공학회:학술대회논문집
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    • 한국정밀공학회 2000년도 추계학술대회 논문집
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    • pp.132-135
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    • 2000

  • The development of a robot system being able to work instead of human in the hazardous environment have been conducted for many year. In this study, the new design of controllers for the Master-Slave system is discussed. The Master-Slave system, force, velocity and torque signals are communicated between a master and a slave system. the conventional requires the enhancement of characteristics of tactility for minute force, precision signals and mechanical abrasion of loader. It is possible b controlling the viscosity of ERF(Electro-rheological fluid) since it varies with the electric field. Design of controller as well comparison between numerical simulation and experiments as will be presented. Futhermore, current methodology is also applicable to design of tele-surgery

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An Accidental over Exposure in Mednif Tele-Cobalt Machine in Nepal

  • chaurasia, P.P.;Srivastava, R.P.;Prasiko, G.;Neupane, B.P.
    • 한국의학물리학회:학술대회논문집
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    • 한국의학물리학회 2002년도 Proceedings
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    • pp.97-99
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    • 2002

  • A radiation incident took place during treatment on MEDNIF Tele cobalt-60 therapy machine in B.P.KOIRALA MEMORIAL CANCER HOSPITAL in Bharatpur, Nepal. This Chinese made machine has activity of 6240 Curies of cobalt -60. This machine has fulfilled safety requirements. ICRP recommendations, safety rules are followed and practiced. The source was struck up during treatment and a technician was exposed to equivalent dose of 13.75 mSv. recorded by Personal film badge. Risks of workers are comparable to other safe industries. All exposures shall be kept as low as reasonably possible. The higher level of safety is achieved only when every one is dedicated to common goal. A lesson is learnt for future. Good practice is essential but not sufficient. A high demand for tele Cobalt therapy convinced management to replace Mednif machine with a new efficient Elite Tele Cobalt theratron Machine.

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TELE-OPERATIVE SYSTEM FOR BIOPRODUCTION - REMOTE LOCAL IMAGE PROCESSING FOR OBJECT IDENTIFICATION -

  • Kim, S. C.;H. Hwang;J. E. Son;Park, D. Y.
    • 한국농업기계학회:학술대회논문집
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    • 한국농업기계학회 2000년도 THE THIRD INTERNATIONAL CONFERENCE ON AGRICULTURAL MACHINERY ENGINEERING. V.II
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    • pp.300-306
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    • 2000

  • This paper introduces a new concept of automation for bio-production with tele-operative system. The proposed system showed practical and feasible way of automation for the volatile bio-production process. Based on the proposition, recognition of the job environment with object identification was performed using computer vision system. A man-machine interactive hybrid decision-making, which utilized a concept of tele-operation was proposed to overcome limitations of the capability of computer in image processing and feature extraction from the complex environment image. Identifying watermelons from the outdoor scene of the cultivation field was selected to realize the proposed concept. Identifying watermelon from the camera image of the outdoor cultivation field is very difficult because of the ambiguity among stems, leaves, shades, and especially fruits covered partly by leaves or stems. The analog signal of the outdoor image was captured and transmitted wireless to the host computer by R.F module. The localized window was formed from the outdoor image by pointing to the touch screen. And then a sequence of algorithms to identify the location and size of the watermelon was performed with the local window image. The effect of the light reflectance of fruits, stems, ground, and leaves were also investigated.

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