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빗살전극형 정전용량형 습도센서와 그 신호처리회로의 설계 제작
姜正浩(Jeong-Ho Kang),李在容(Jae-Yong Lee),金佑鉉(Woo-Hyun Kim) 대한전기학회 2006 전기학회논문지 P Vol.55 No.1
For the purpose of developing capacitive humidity sensor having interdigital electrodes, interdigital electrode was modeled and simulated to obtain capacitance and sensitivity as a function of geometric parameters like the structural gap and thickness. For the development of ASIC, switched capacitor signal processing circuits for capacitive humidity sensor were designed and simulated by Cadence using 0.25㎛ CMOS process parameters. The signal processing circuits are composed of amplifier for voltage gain control, and clock generator for sensor driving and switch control. The characteristics of the fabricated sensors are; 1) sensitivity is 9fF/%R.H., 2) temperature coefficient of offset(TCO) is 0.4%R.H./℃, 3) nonlinearity is 1.2%FS, 4) hysteresis is 1.5%FS in humidity range of 3%R.H.~98%R.H.. The response time is 50 seconds in adsorption and 70 seconds in desorption. Fabricated process used in this capacitive humidity sensor having interdigital electrode are just as similar as conventional IC process technology. Therefore this can be easily mass produced with low cost, simple circuit and utilized in many applications for both industrial and environmental measurement and control system, such as monitoring system of environment, automobile, displayer, IC process room, and laboratory etc..
DC Motor와 Ballscrew를 이용한 Electromagnetic Damper Damping 효과 실험
강정호(Jeong-Ho Kang),이학철(Hac-Choel Lee),정영석(Young-Suk Jeong) 전력전자학회 2008 전력전자학술대회 논문집 Vol.- No.-
In this Paper, the modeling of the electromagnetic damper for automobile suspension is presented and the validation of the model is demonstrated by experiments. An electromagnetic damper, composed of a rotary DC motor, and a ball screw and nut. The damper then operates as a linear electric actuator. The damper then operate as a linear electric actuator. The results indicate the proposed system is feasible and it is proved that the electromagnetic damper has better than oil damper of passive control system.
강정호 ( Sung Kgun Lee ),이성근 ( Jeong Ho Kang ) 대한임상독성학회 2021 대한임상독성학회지 Vol.19 No.1
Ciguatera is the commonest syndrome of marine poisoning that is caused by the ingestion of ciguatoxins that accumulate in certain tropical and subtropical finfish. It is endemic throughout the subtropical and tropical regions of the Indo-Pacific and Caribbean and has been rarely reported in Korea. With the expansion of travel, tourism, and the import of fish from the tropics, ciguatera poisoning now affects a diverse population. We report a case of ciguatera in a 70-year-old woman, presenting with general paralysis and coma, which developed after consuming codfish and mackerel in Korea.
강정호(Kang Joung-ho),하동준(Ha Dong-Joon),조광수(Cho Kwang-Soo),고지영(Koh Ji-Yeong),정찬호(Jeong Chan-Ho) 대한건축학회 2007 대한건축학회 학술발표대회 논문집 - 계획계/구조계 Vol.27 No.1
As Central Europe countries joined Europe Union in 2004, the investment of multi-national countries on these countries are growing and the construction of plants are increasing. For the effective construction of plants in these countries, design and construction technology should be accumulated where long span precast concrete is widely applied to reduce construction duration, labor cost and assure quality requirements. The purpose of this study is introducing and comparing design and construction technology of precast concrete in Central Europe.