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유종호 ( Jong-ho Yoo ),박재률 ( Jae-roul Park ),김주영 ( Ju-young Kim ),석수영 ( Soo-young Suk ),정의태 ( Ui-tae Jeong ) 한국정보처리학회 2017 한국정보처리학회 학술대회논문집 Vol.24 No.1
본 논문은 영상 장치를 이용한 자동화 시스템으로 용접 시 발생하는 용접 비드 정보 검출 방법에 대한 연구이다. 조명시스템과 결합된 2D 비전 카메라를 이용하여 용접된 시료 영상을 획득하고 영상처리과정을 거쳐 비드 부분만 획득한다. 획득된 비드 폭의 길이와 기공과 같이 용접 불량 상태 등의 정 보 얻는다. 이 정보들과 산업체에서 요구되는 기준과 비교하여 정상적인 용접이 이루어 졌는지를 판별한다.
다중 이미지 센서의 신호처리를 위한 8-bit Single Slope ADC 설계
이종철 ( Jong Cheol Lee ),이상훈 ( Sang Hoon Lee ),김진태 ( Jin Tae Kim ),박재률 ( Jae Roul Park ),신장규 ( Jang Kyoo Shin ),최평 ( Pyung Choi ) 한국센서학회 2015 센서학회지 Vol.24 No.4
This paper proposes a single slope A/D converter (SSADC) that is possible to process the signal of the ultraviolet, visible and infrared rays with a single chip. And the proposed SSADC is a type of single channel ADC. In the conventional SSADC, it is possible to process the only one signal with a kind of the sensor because the speed of the operating frequency and the slope of ramp signal generated by the ramp generator are fixed. In order to improve the disadvantages, a ramp generator which has variable slope in ramp function is designed and 3x1 MUX(multiplexer) is adopted so that we can change the speed of the operating frequency and the slope of ramp signal. Therefore, the multiple signal processing of the wanted sensors can be possible. The designed circuit is layout by the 0.35-μm CMOS 2-poly 4-metal technology process and is checked through DRC and LVS tools.
자동차 조향장치용 TAS module을 위한 Multi-track Encoder기반 신호처리보드의 구현
우승탁 ( Seong Tak Woo ),한춘수 ( Chun Soo Han ),백준병 ( Jun Byung Baek ),이상훈 ( Sang-hoon Lee ),정민우 ( Min Woo Jung ),추성중 ( Sung Joong Choo ),박재률 ( Jae Roul Park ),유종호 ( Jong-ho Yoo ),정상훈 ( Sanghun Jung ),김주영 한국센서학회 2017 센서학회지 Vol.26 No.6
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.