• Title, Summary, Keyword: Convergence module

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Preliminary study of Angle sensor module for Vehicle Steering System Based on Multi-track Encoder (자동차 조향장치용 TAS module을 위한 Multi-track Encoder기반 신호처리보드의 구현)

  • Woo, Seong Tak;Han, Chun Soo;Baek, Jun Byung;Lee, Sang-hoon;Jung, Min Woo;Choo, Sung Joong;Park, Jae Roul;Yoo, Jong-Ho;Jung, Sanghun;Kim, Ju Young
    • Journal of Sensor Science and Technology
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    • v.26 no.6
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    • pp.432-437
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    • 2017
  • As 4.0 industry has been developed, research on a self-driving car technology and related parts of an automobile has been highly investigated recently. Particularly, a TAS(Torque Angle Sensor) module on steering wheel system has been considered as a key technology because of its precise angle, torque detection and high speed signal processing. The environmental assessment is generally required on the TAS module to examine high resolution of angle/torque detection. In the case of existing TAS module, angle detection errors has been occurred by back-lash on main and sub gear in addition to complicated structure caused by gears. In this paper, a structure of the TAS module, which minimizes the numbers of components and angle detection errors on the module compared with the existing TAS module, for vehicle steering system based on a Multi-track Encoder has been proposed. Also, angle detection signal processing board, and key technology of the TAS module were fabricated and evaluated. As a result of the experiments, we confirmed an excellent performance of the fabricated signal processing board for angle detection and an applicability of the fabricated angle detection board on the TAS module of vehicles by the environmental assessment an automobile standard.

New Impedance Matching Scheme for 60 GHz Band Electro-Absorption Modulator Modules

  • Choi, Kwang-Seong;Chung, Yong-Duck;Kang, Young-Shik;Jun, Dong-Suk;Ahn, Byoung-Tae;Moon, Jong-Tae;Kim, Je-Ha
    • ETRI Journal
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    • v.28 no.3
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    • pp.393-396
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    • 2006
  • This letter proposes a new impedance matching scheme of a traveling wave electro-absorption modulator (TWEAM) module for a 60 GHz band radio-over-fiber (ROF) link. A microstrip band pass filter (BPF) was used to achieve impedance matching at the 60 GHz band, and termination resistance was carefully designed to obtain an input impedance close to $50\;{\Omega}$. Also, a bias circuit for the device was designed in the module. The measured return loss and frequency response show that the modulator module observes the characteristics of a filter without the need of a further tuning process.

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Fabrication of Thick Film type Cluster for Anion Generator applications (음이온 발생용 후막형 클러스터의 제조)

  • Choa, Jung-Hwan;Yeo, Dong-Hun;Shin, Hyo-Soon;Hong, Youn-Woo;Park, Zee-Hoon;Kim, Jong-Hee
    • Proceedings of the Korean Institute of Electrical and Electronic Material Engineers Conference
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    • pp.464-464
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    • 2007
  • 환경오염으로 인한 각종 질병 및 증후군 등의 발생으로 가정용 산업용에서 환경관련 기술들이 다양한 분야로 확대되고 있다. 본 연구에서는 양이온 및 음이온 양쪽이온을 최대한 발생시키며, 오존 발생량은 억제하고 소비전력을 절감하고자 Ag-Pd 전극을 적용한 세라믹스 클러스터를 개발하였다. Ag-Pd 전극과 매칭되는 세라믹스 조성을 개발한 후 적층공정 기술을 이용하여 후막형 클러스터를 제조하였다. 전극 패턴모양, 전극간 방전간격 및 전극 보호층의 두께에 따른 음이온 발생량을 측정하여 최적화를 위한 실험을 진행하였으며, 음이온 발생량 100만개이상, 오존발생량 0.6ppb인 특성을 확인하였다.

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Environmental Monitoring Sub-System for Ubiquitous Terminal Using Metal Oxide Nano-Material Gas Sensor (나노 금속산화물을 이용한 유단말용 환경 모니터링 서브 시스템)

  • Moon, S.E.;Lee, H.Y.;Lee, J.W.;Park, J.;Park, S.J.;Kwak, J.H.;Maeng, S.;Park, K.H;Kim, J.;Udrea, F.;Milne, W.I.
    • Proceedings of the Korean Institute of Electrical and Electronic Material Engineers Conference
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    • pp.63-63
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    • 2008
  • Environmental monitoring sub-system has been developed using gas sensor module, Bluetooth module and PDA phone. The gas sensor module consists of $NO_2or$ CO gas sensor and signal processing chips. Gas sensor is composed of the micro-heater, sensing electrode and sensing material. Metal oxide nano-material was selectively deposited on a substrate with micro-heater and was integrated to the gas sensor module. The change in resistance of the metal oxide nano-material due to exposure of oxidizing or deoxidizing gases is utilized as the principle of this gas sensor operation mechanism. This variation detected in the gas sensor module was transferred to the PDA phone by way of Bluetooth module.

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Reconfigurable Optical Add-Drop Multiplexer Using a Polymer Integrated Photonic Lightwave Circuit

  • Shin, Jang-Uk;Han, Young-Tak;Han, Sang-Pil;Park, Sang-Ho;Baek, Yong-Soon;Noh, Young-Ouk;Park, Kang-Hee
    • ETRI Journal
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    • v.31 no.6
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    • pp.770-777
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    • 2009
  • We have developed a fully functional reconfigurable optical add-drop multiplexer (ROADM) switch module using a polymer integrated photonic lightwave circuit technology. The polymer variable optical attenuator (VOA) array and digital optical switch array are integrated into one polymer PLC chip and packaged to form a 10-channel VOA integrated optical switch module. Four of these optical switch modules are used in the ROADM switch module to execute 40-channel switching and power equalization. As a wavelength division multiplexer (WDM) filter device, two C-band 40-channel athermal arrayed waveguide grating WDMs are used in the ROADM module. Optical power monitoring of each channel is carried out using a 5% tap PD. A controller and firmware having the functions of a 40-channel switch and VOA control, optical power monitoring, as well as TEC temperature control, and data communication interfaces are also developed in this study.

Electroactive Polymer Actuator for Lens-Drive Unit in Auto-Focus Compact Camera Module

  • Lee, Hyung-Kun;Choi, Nak-Jin;Jung, Sun-Kyung;Park, Kang-Ho;Jung, He-Won;Shim, Jae-Kyu;Ryu, Jae-Wook;Kim, Jong-Dae
    • ETRI Journal
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    • v.31 no.6
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    • pp.695-702
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    • 2009
  • We propose a lens-drive unit composed of an ionic polymer-metal composite (IPMC) for an auto-focus compact camera module in cellular phones to solve the power consumption problem of voice coil motors which are widely used in commercial products. In this research, an IPMC incorporated into a lens-drive unit is designed to implement a large displacement in low-power consumption by using an anisotropic plasma treatment. Experimental results show that a camera module containing IPMCs can control and maintain the position of the lens by using proportional integral derivative control with a photo-reflective position sensor despite the non-linear actuation behavior of IPMCs. We demonstrate that the fabrication and commercialization of a lens actuator that has a large displacement and low power consumption using IPMCs is possible in the near future.

Implementation and Performance Measurement of Personal Media Gateway for Applications over BcN Networks (BcN용 미디어 프로세서형 단말(PMG)의 구현 및 성능시험)

  • Jang, Seong-Hwan;Yang, Soo-Kyung;Cha, Young;Choi, Woo-Suk;Son, Seok-Bae;Kim, Jung-Joon
    • 한국정보통신설비학회:학술대회논문집
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    • pp.329-332
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    • 2005
  • In this paper, we describe implementation of personal media gateway (PMG) for applications over BcN networks. PMG is a TV based set-top terminal, which enables transmission of Full D1 high quality video and audio at the speed of maximum 2Mbps. It supports SIP protocol and QoS for the BcN networks. The hardware of the PMG consists of host module, audio/video codec processing module, DTMF module, and remote control I/O module. H.263 and MPEG4 software are implemented in DSP as codec for hi-directional communication and streaming, respectively. G.711 and Ogg-Vorbis are implemented as audio codec. We examined the quality of video using the Video Quality Test Equpment, which was developed by KT Convergence Lab. The experimental results show the video quality of MOS 4.1 and audio quality of MOS 4.3. We expect that PMG will be prospective business models, and create new customer value.

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Fabrication of Transimpedance Amplifier Module and Post-Amplifier Module for 40 Gb/s Optical Communication Systems

  • Lee, Jong-Min;Min, Byoung-Gue;Kim, Seong-Il;Lee, Kyung-Ho;Kim, Hae-Cheon
    • ETRI Journal
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    • v.31 no.6
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    • pp.749-754
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    • 2009
  • The design and performance of an InGaAs/InP transimpedance amplifier and post amplifier for 40 Gb/s receiver applications are presented. We fabricated the 40 Gb/s transimpedance amplifier and post amplifier using InGaAs/InP heterojunction bipolar transistor (HBT) technology. The developed InGaAs/InP HBTs show a cut-off frequency ($f_T$) of 129 GHz and a maximum oscillation frequency ($f_{max}$) of 175 GHz. The developed transimpedance amplifier provides a bandwidth of 33.5 GHz and a gain of 40.1 $dB{\Omega}$. A 40 Gb/s data clean eye with 146 mV amplitude of the transimpedance amplifier module is achieved. The fabricated post amplifier demonstrates a very wide bandwidth of 36 GHz and a gain of 20.2 dB. The post-amplifier module was fabricated using a Teflon PCB substrate and shows a good eye opening and an output voltage swing above 520 mV.

Right-Angle-Bent CPW for the Application of the Driver-Amplifier-Integrated 40 Gbps TW-EML Module

  • Yun, Ho-Gyeong;Choi, Kwang-Seong;Kwon, Yong-Hwan;Choe, Joong-Seon;Moon, Jong-Tae;Lee, Myung-Hyun
    • ETRI Journal
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    • v.28 no.5
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    • pp.648-651
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    • 2006
  • In this letter we present a right-angle-bent coplanar waveguide (CPW) which we developed for the application of the driver amplifier-integrated (DAI) 40 Gbps traveling wave electroabsorption modulated laser module. The developed CPW realized parallel progression of the radio frequency (RF) and light using a dielectric overlay structure and wedge bonding on the bending section. The measured $S_{11}$ and $S_{21}$ of the developed CPW were kept below-10 dB up to 35 GHz and -3 dB up to 43 GHz, respectively. These measured results of the CPW were in good agreement with the simulation results and demonstrated the applicability of the CPW to the 40 Gbps communication module.

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Educational Strategy for Practical Convergence using Module Curriculum in University (대학의 실무 융합교육을 위한 융합모듈 교육 전략)

  • Kim, Gi-Dae;Park, Keun-Seo
    • Journal of the Korea Convergence Society
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    • v.9 no.7
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    • pp.205-211
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    • 2018
  • The purpose of this study is to propose a strategy to educate the core contents of various major fields in practical and convergent ways in universities in order to prepare for the 4th industrial revolution era. First, convergence field is established in the university curriculum in addition to the existing major and the liberal arts field. Second, convergence courses are created in connection with job ability, which are major curriculum but only for students in other departments. Third, convergence courses are organized in the form of module curriculum, which is a small-sized and independent curriculum consisting of 4 courses. D University, one of the local private universities in Korea, has provided such convergence module education since 2016, and satisfactory results have been obtained in the course enrollment rate and the course evaluation, etc. By combining these convergence modules in various ways, it is possible to easily create customized majors required and designed by local companies at low cost.