• 제어로봇시스템학회:학술대회논문집
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• 제어로봇시스템학회 1998년도 제13차 학술회의논문집
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• pp.391-394
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• 1998

The man-machine interface Is an important factor in the computer system, and it is thought that line-of-sight (LOS) detection technology will allow significant advances in this field. Techniques for detecting LOS for use in human interfaces have been studied［1]［2］. In earlier studies, however, LOS was detected with a head piece, goggles, or through fixing the position of the head. The limitations imposed by these fixed conditions render them unsuitable far use in interfaces, as they have adverse mental or physical effects on humans. Therefore. they have not been sufficiently developed for practical application. Research on non-contact LOS detection is expected to result in a usable LOS man-machine interface［3］［4］, and the current study is intended to be a step in that direction. The authors used color contact lenses for LOS detection, and applied this new method to a computer interface. The use of color contact lenses simplifies image processing. The algorithm used in this study is sufficiently accurate for practical applications. This technique can be used in input devices, in virtual reality applications, and in human engineering research.

• 한국인터넷방송통신학회논문지
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• 제11권1호
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• pp.53-59
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• 2011

본 연구는 RFID 리더에서 머신 팩터(Machine Factor)와 맨 팩터(Man Factor)를 네트웍상으로 실시간 전송하여 정확한 원가 계산이 가능하도록 한 실시간 생산 원가 계산 기능을 갖는 생산관리시스템에 관한 것이다. 이를 위하여 본 연구는 생산 설비 제어장치에 마이크로프로세서를 도입하였고, 생산 설비의 일측에 RFID 리더를 추가로 설치하였다. 제어부와, 작업의 시작과 종료 시 카드를 통과시키는 카드리더와, 산출된 머신 팩터와 맨 팩터를 PLC 통신포트, 직렬통신포트, 이더넷 통신포트 등을 거쳐 네트웍상의 서버로 전송할 수 있도록 하였다. 이에 따라, 본 연구는 생산원가나 정확한 생산효율을 실시간으로 산출할 수 있으므로 효과적인 생산관리가 가능하게 되어, 원가절감과 생산성 향상에 크게 기여할 수 있게 되었다.

• 한국지능시스템학회논문지
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• 제18권3호
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• pp.373-380
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• 2008

지금까지 기계 기반의 필기 숫자 인식 방법에 대한 많은 연구가 진행되어 왔다. 그러나 여전히 인간이 만족할 만한 인식 성능을 이루지는 못하였다. 이러한 배경에는 단순히 인식률을 나타내는 수치가 낮은 것도 한 부분을 차지 하지만, 인간이 수긍할 수 없는 오류 성향도 중요한 부분을 차지한다. 그러므로 본 논문에서는 실제 인간의 숫자 인식이 어떻게 이루어지는지를 확인하는 실험을 먼저 수행하고, 이것에 근거하여 기계 인식을 위하여 필요한 요소들이 무엇인지를 고찰하도록 하였다. 실험결과 한쪽 또는 양쪽 방향으로 혼동하는 숫자 쌍, 전혀 혼동하지 않는 숫자 쌍, 오류 발생의 중복성 등의 결과를 비교 분석하여 인간이 인식과정에서 중요하게 고려하는 특징들을 찾아냈고, 그 결과에 근거하여 기계 인식에 있어서 더 높은 인식 성능을 발휘할 수 있고, 더 나아가 인간적인 측면에서 보다 더 신뢰할 수 있는 인식결과를 이끌어 낼 수 있는 접근 방향에 대하여 제시하였다.

• 산업경영시스템학회지
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• 제9권13호
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• pp.1-11
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• 1986

The mechanization of production facilities being made rapid progress, and its function being diversified and complicated for industrialized period, the relation between machine and Its operator brings about many problems which are concerned with accident. In these circumstance, the purpose of industrial safety can not be properly achieved as considered by only one side of machine or man. Therefore, it is necessary to study how to cope with the safety of man-machine system. It has to be considered in the above mentioned contents that safety management can not be attained through only technique of numerical control. The cause of accident being studied scientifically, the service of safety problems has to be systematized and operated in rational safety organization. The purpose of this thesis is to consider preventing and decreasing industrial accident from production system field by means of the improvement of worker's own safety consciousness and introducing the function of safety management to the duties of labour union.

• 한국정밀공학회:학술대회논문집
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• 한국정밀공학회 1995년도 추계학술대회 논문집
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• pp.1191-1194
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• 1995

A conversational programming system for turning processes was studied to enhance the user friendlness of an NC by adopting man-machine interface functions through Visual C $^{++}$ programming tool under the Windows 95 environment. Shop floor programming performance was incorporated in the developed CAM module. In order to increase flexibility of the man-machine interface, graphic based programmin tool have been developed. An NC turning machine equipped whit an open architecture PCNC was used as a test bed of the system. Perfomance of the system was verified through case studies..

• 제어로봇시스템학회:학술대회논문집
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• 제어로봇시스템학회 1988년도 한국자동제어학술회의논문집(국제학술편); 한국전력공사연수원, 서울; 21-22 Oct. 1988
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• pp.764-769
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• 1988

In this paper the failure possibility and the error possibility are used to represent reliability of a technical component and that of a human operator, respectively. The failure possibility and the error possibility are fuzzy sets on the interval [0,1]. In a man-machine system, reliability of the technical component and that of the human operator are usually affected by many factors, e.g., the environment in which a machine is operated, psychological stress of the human operator, etc. The possibility is derived from not only the failure or the error rate but also estimates of these factors. The fuzzy reasoning plays an important role in the derivation. The reliability analysis is performed by the use of the possibility obtained by the present method. Moreover this paper discusses the sensitivity analysis which evaluates what extent the change of the estimation of each factor has an influence on reliability of a man-machine system. The important factors to be ameliorated are shown through the sensitivity analysis.

• 한국생산제조학회지
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• 제7권2호
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• pp.29-39
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• 1998

A conversational programming system for turning processes was studied to enhance the user friendliness of a NC Lathe by adopting man-machine interface functions through Delphi programming tool under the Windows 95 environment. Functions of tool collision checking were developed through zone limitation algorithms. Final shape of workpiece was generated by means of tree structure algorithm. Shop floor programming performance was incorporated in the developed CAM module. In order to increase flexibility of the man-machine interface, graphic based programming tools have been developed. A NC turning machine equipped with an open architecture PCNC was used as a test bed of the system. Performance of the system was verified through case studies.

• 산업경영시스템학회지
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• 제10권16호
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• pp.133-141
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• 1987

Man-machine assignment problem with random service and processing times is considered in this paper. Assuming heterogeneous semi-automatic machines, the problem is dealt with as follow; 1. For the different type of machines that have probabilistics distribution of processing time and nan service time, man·machine assignment problem is solved by heuristic method using expected time value if machine. 2. Since each related time is a random variable, the performance of the optimal assignment obtained from the above method is verified through monte carlo simulation method. 3. The above procedures are programed by BASIC language to use easily and rapidly in the personal computer. The result of this study can contribute to productivity enhancement by increasing the efficiencies of both operators and machines.

• 한국국방경영분석학회지
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• 제23권1호
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• pp.76-87
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• 1997

This paper deals with reliability and MTTF analysis of a non-repairable man-machine system operating under different weather conditions. The system consists of a hardware(machine) and a two-operator standby subsystem such as the air combat maneuvering of fighters with dual seat. The failure times for the subsystems follow the exponential distribution with constant parameter. By considering not only the effect on hardware component but also the weather conditions and human performance factors such as the operator's errors, a Markov model is presented as a method for evaluating the system reliability of time continuous operation tasks. Laplace transforms of the various state probabilities have been derived and then reliability of the system, at any time t, has been computed by inversion process. MTTF has also been computed.

• Journal of Biosystems Engineering
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• 제32권5호
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• pp.284-291
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• 2007

This study was to investigate performance of position, basic controls and additional control for man-machine interface on a 3-point hitch of a tractor. The developed additional control was one-touchup, backup, turnup, liftarm limited, PTO on/off and an external control. As a result of experiment, maximum steady state error of response system was lower than $0.8^{\circ}$ and this result showed the function operated normally because the dead band of system set was ${\pm}1^{\circ}$. There was no abnormal situation by switch operation and sensor signal during the performance test. The results of experiment showed the characteristics of the response was sufficient to be used as the position and additional control system for tractors.