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이인수(In-Soo Lee),김년수(Nyun-Su Kim),조현길(Hyun-kil Cho),전용준(Yong-Jun Jon),김창길(Chang-Gil Kim),박홍배(Hong-Bae Park) 한국정보기술학회 2013 한국정보기술학회논문지 Vol.11 No.3
In this paper we propose a landfill-type ammonia gas measuring system for measuring of temperature, humidity, and ammonia gas in the greenhouse. Especially proposed measurement system was designed to easy to carry and easy to manipulate, as well as low-cost type. Proposed ammonia gas measurement device consists of temperature and humidity sensors, TGS 2602 VOC sensor, TGS 2444 ammonia sensor, sensor housing for improving the accuracy of system and compensation heater. Also, concentration of ammonia gas can be estimated by the least square method. To evaluate performances of the suggested system, the experiment was performed in laboratory environment by using the designed sensor board. From the experiment results we know that the proposed system was able to estimate of the concentration for ammonia gas.