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Journal of Sensors
Volume 2016, Article ID 9721820, 8 pages
http://dx.doi.org/10.1155/2016/9721820
Research Article

RS485 Image Sensor for Digital Cinema System

1High-Tech S/W Research Center, Incheon National University, 119 Academy-ro, Yeonsu-gu, Incheon 406-772, Republic of Korea
2Department of Embedded Systems Engineering, Incheon National University, 119 Academy-ro, Yeonsu-gu, Incheon 406-772, Republic of Korea
3Department of Computer Engineering, Gachon University, 1342 Seongnam-daero, Sujeong-gu, Seongnam-si, Kyunggi-do, Seongnam 461-701, Republic of Korea

Received 21 January 2015; Accepted 19 March 2015

Academic Editor: Wei Wu

Copyright © 2016 Eunju Kim et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

To activate various devices using RS485, a repeater is generally used. In current digital cinema systems, each device is controlled with RS485 by mixing RS485 and DMX512. However, as today’s cinema equips hundreds of 4D chairs and the environmental directors, it is nearly infeasible for the legacy system to control. To this end, this paper designs and implements a new system which makes hundreds of 4D chairs and the environmental directors be controlled simultaneously exploiting RS485 network topology and its repeaters. The proposed approach is tested in a real-time system for assessing the performance by Paessler Router Traffic Grapher (PRTG) in Windows environment. Simulation results show that the tested system supports 4D chairs and their motions are well operated simultaneously with RS485.