• Transactions of the Korean Society of Mechanical Engineers A
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• v.41 no.11
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• pp.1109-1117
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• 2017

In this work, a new control module and communication system associated with DSP are proposed to overcome the limitations of the contemporary prevailing PLC-based industrial equipment controller, and the performance of the proposed system was experimentally verified. In the light of this issue, a communication conversion scheme from RS-485 to Modbus, the dominant communication protocol used by PLC, was developed and shown to yield enhanced compatibility between devices. The proposed system allows for ~50％ cost reduction as well as downsizing of the industrial controllers. Furthermore, the design includes 24 V general digital I/O pins, which facilitate partial expansion of inputs and outputs. With Modbus communication implemented in DSP with the RS-485 interface, multi-to-multi communication may also be achieved.

• Journal of the Korean Graphic Arts Communication Society
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• v.24 no.2
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• pp.61-68
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• 2006

Rubber rollers in off-set printing process are one of the most important factor, transferring the ink and water to the plate. Each different roughness of roller surface and different rubber compounds could effect to ink transparency and printability. Three different rubber compounds (NBR, EPDM, PU) and each different roughness of roller surface would show us different result of ink transparency and density of actual printing result. There might be a differences from actual printing result not only the amount of transferred ink, but there is also some other point we should check it out. According to the result of this studies, we found that different rubber compounds and their surface roughness directly effect to the rate of ink transfer. It also shows that the amount of transferred ink is not even and stable amount what we expect to get optimum printability. To reach a targeted printability with rollers, firstly it is necessary to choose correct rubber compounds with certain purpose and the roughness of roller surface has to be as smooth as less than $5{\mu}m{\sim}7{\mu}m$.

• 제어로봇시스템학회:학술대회논문집
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• 1997.10a
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• pp.93-96
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• 1997

The paper suggests a guide of designing and implementing automation systems using industrial communication networks.

• International Journal of Internet, Broadcasting and Communication
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• v.10 no.1
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• pp.65-70
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• 2018

As technological development is progressing recently, various technologies are actively being studied in the course of the 4th industrial revolution. So, even in the educational field, virtual reality and augmented reality technology are used in educational environments, but specialized additional equipment is required and the price is very expensive. Also, since a plurality of equipment are required for a large number of people, it is urgent to study the technology that can be effectively applied to the industrial education field. So in this paper, we propose an industrial training system for HMD-AR, MPEG-DASH and SOAP based HTTP based Live Machinery Operation using Smartphone to solve the problems of existing system.

• Journal of Satellite, Information and Communications
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• v.12 no.1
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• pp.88-93
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• 2017

Policy maker inevitably faces two restraints once they attempt to accomplish $4^{th}$ Industrial Revolution through development of Industrial Internet of Things(i.e. IIoT). One is to construct physical network by substituting old equipment and infrastructure into smart equipment and the other is to connect the physical network into national telecommunications infrastructure. Australia, as she proceeds National Broadband Network programme, has assembled all medium of telecommunications to provide every Australian premises regardless to its physical location by creating wholes-sale only carrier, NBN co. At the same time, Australian government also provides its own IIoT policy; Co-development and New-Development projects. Meanwhile, NBN co. has launched its own two communication satellites in 2015 and 2016 to replace the old satellite communication services depended on the other companies' satellites. This article, in the end, analyses the role of satellite communication in $4^{th}$ industrial revolution with case study on Australian policy.

• Proceedings of the Korea Society for Simulation Conference
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• 1991.10a
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• pp.41-77
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• 1991

A large number of R & D projects in automobile information and communication systems have been achieved in these twenty years to improve various aspects on automobile usage. Examples on simulation for evaluation of these systems such as these on road to vehicle communication, inter-vehicle communication, and vehicle guidance are shown.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.11 no.12
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• pp.4962-4967
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• 2010

Security of the electronic commercial transaction especially through the information communication network is gaining its significance due to rapid development of information and communication related fields. For that, some kind of cryptographic algorithm is already in use for the smart card. However, the growing needs of handling multimedia and real time communication bring the smart card into more stringent use of its resources. Therefore, we proposed a key scheduler block of the smart card to facilitate multimedia communication and real time communication.

• Proceedings of the Korea Society for Industrial Systems Conference
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• 2007.02a
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• pp.40-46
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• 2007

Established CRM system provides a powerful help for maintaining existing client, attracting new client, making profit from client or mobile communication industry. In the system structure of CRM eye, the mobile communication industry of CRM can be divided into three levels. : channel layer; operation layer, analysis layer. The data mining of CRM in mobile communication industry fall into six stages. Finally article gives some CRM's examples to illustrate how to gain client, enhance client's value, and how to maintain existing client.

• The Journal of the Korea institute of electronic communication sciences
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• v.4 no.4
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• pp.293-300
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• 2009

In this paper, we describe a method for synchronization protocol method used in control system based on network and IEEE 1599 synchronization method which used for implementation of synchronization technology of advanced industrial Ethernet. We also implement and perform the experiment for synchronization technology of EtherCAT communication which is one of the industrial Ethernet technology used IEEE 1599 synchronization technology based on time. And we describe an evaluation for experiment result, improve the problem and future plan.

• Journal of Korean Institute of Industrial Engineers
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• v.26 no.4
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• pp.402-410
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• 2000

The current study examines principles to develop universal design guidelines for manufacturing information and communication devices. The study surveyed inconveniences disabled people experience in the information and communication environment with current technology and design, and suggested abbreviated universal design guidelines. Design guidelines should reduce those inconveniences detected through the task analysis and GOMS modelling of the usage by disabled people. Design and functional features of mobile phones were examined since they quickly became essential communication tools for both disabled and non-disabled people alike. Design issues were examined in controls, input methods, and output methods in terms of human factors and ergonomics. It is expected that both governments and manufacturers can save costs to produce and manufacture special assistive devices for disabled people by implementing universal design in their communication products. Since it is becoming the international trend, application of the universal design should be enforced to all communication and information devices by government for the higher quality of life for all groups of user.