• Journal of the korean academy of Pediatric Dentistry
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• v.35 no.1
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• pp.1-10
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• 2008

The purpose of this study was to develop the wireless pH telemetry lasting longer than 24 hours in the mouth to overcome the limits of conventional wire telemetry previously used for salivary and plaque pH measurement, and to assess its effectiveness. We developed a wireless pH telemeter which can measure and store the pH profile data during more than 24 hours. It was composed of intraoral part; pH sensor of antimony electrode, battery and microprocessor for data storage, and extraoral part; control/data receiver and data analyzing software which was newly made for this device. After inspecting wireless electrode for accurate measurement, it was attached to the removable intraoral appliance and delivered to the volunteer who was told to wear except brushing time, retrieved after 24 hours and finally the pH profile data was extracted and analyzed. When compared with conventional wire telemetry, this device showed similar results and induced less discomfort to examinees. The data showed pH changes at same time when examinees ate various scheduled foods and beverages. With this method it became possible to accurately measure pH changes within mouth for long time in accordance with individual's lifestyle, definitely reducing the discomfort inflicted to the examinees' life.

• Bulletin of Korea Environmental Preservation Association
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• v.29 s.367
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• pp.42-46
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• 2007

최근 수질환경보전법의 개정법률(안)에 의거하여 폐.하수종말처리장에 수온, pH, 생물학적산소요구량(BOD), 화학적산소요구량(COD), 총질소(TN), 총인(TP) 및 부유물질(SS)의 자동으로 측정할 수 있는 수질자동측정기의 부착이 의무화될 예정에 있다. 그러나, 현재 전국적으로 화학적산소요구량 측정장비와 같이 일부 항목에 대한 자동측정장치는 설치.운영 중인 곳이 많이 있으나, 수질 TMS 설치 규정에 나와 있는 전 항목을 측정할 수 있는 장비가 설치되어 운영하는 곳은 극히 일부에 불과한 실정이다. 따라서, 수온, pH, 화학적산소요구량(COD), 총질소(TN), 총인(TP), 부유물질(SS) 자동측정 장치를 설치하고, 무선통신(CDMA) 방식을 이용하여 '방류수 수질 원격감시체계(TMS) 시범 운영'을 통하여, 측정 장비들에 대한 자료의 정확성, 신뢰성을 파악하여 설치될 장비들에 대한 성능을 사전에 평가하고, 수질 TMS 시스템에 대한 현장 적응 능력 및 안정성을 파악하여 실질적으로 운영되는 시점에 좀 더 정확하고 실용적인 시스템을 적용하고자 한다.

• Journal of Sensor Science and Technology
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• v.10 no.3
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• pp.187-195
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• 2001

A wireless telemetry measurement system, using ISFETs, was developed for environmental monitoring applications, industrial processes, medical treatments and so on. This system is composed of the measurement part located at remote site and a personal computer(PC) which control whole instrument process. The measurement part transmits measured data to the PC by RF transceiver, and transmitted data are analyzed and handled in the PC. Proposed system utilizing time division multiplexing for the transmission of 3channel ISFET signal. The measurement part has an identification number(ID) so that the PC controls many measurement parts separately. Experiments were performed using pH-ISFETs, and the implemented system operates well within designed specification and accuracy of 0.1 pH.

• Environmental engineer
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• v.23 s.244
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• pp.56-60
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• 2006

최근 수질환경보전법의 개정법률(안)에 의거하여 폐 · 하수종말처리장에 수온, pH, 생물학적산소요구량(BOD), 화학적산소요구량(COD), 총질소(TN), 총인(TP) 및 부유물질(SS)의 자동으로 측정할 수 있는 수질 자동측정기의 부착이 의무화될 예정에 있다. 그러나, 현재 전국적으로 화학적산소요구량 측정장비와 같이 일부 항목에 대한 자동측정장치는 설치 · 운영 중인 곳이 많이 있으나, 수질 TMS 설치 규정에 나와 있는 전 항목을 측정할 수 있는 장비가 설치되어 운영하는 곳은 극히 일부에 불과한 실정이다. 따라서, 수온, ph, 화학적 산소요구량(COD), 총질소(TN), 총인(TP), 부유물질(SS) 자동측정 장치를 설치하고, 무선통신(CDMA)방식을 이용하여 ‘방류수 수질 원격감시체계(TMS) 시범 운영'을 통하여, 측정 장비들에 대한 자료의 정확성, 신뢰성을 파악하여 설치된 장비들에 대한 성능을 사전에 평가하고, 수질 TMS 시스템에 대한 현장 적응 능력 및 안정성을 파악하여 실질적으로 운영되는 시점에 좀 더 정확하고 실용적인 시스템의 적용하고자 한다.

• Journal of the Korean Society of Fisheries and Ocean Technology
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• v.35 no.2
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• pp.136-146
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• 1999

The telemetry system for the oxygen, pH, turbidity and the distribution ecology of fishes was constructed by the authors in order to product and manage effectively in shallow sea culture and setnets fisheries, and then the experiments for the telemetry system carried out at the culturing fishing ground in coast of Sanyang-Myon, Kyoungsangnam-Do and the set net fishing ground located Nungpo bay in Kojedo province respectively from October, 1997 to June 1998.As those results, the techniques suggested in the telemetry system for which find out the relationship between the physical and chemical environment in the sea and the distribution ecology of fishes gave full display its function, and its system could be operated as real time system. This research can also provide base-line data to develope a hybrid system unifying the marine environment information and the fisheries resources information in order to manage effectively coastal fishing ground.