Onur KOÇAK, Mehmet Cüneyt ŞEN, Erdi ARSLAN, Arif KOÇOĞLU

TIBBİ KULLANIM AMAÇLI DENEY KABİNİ TASARIMI VE İMALATI

Bu çalışmada tıbbi kullanım amaçlı bir deney kabini, uygun standartlara göre uygulanmış ve inşa edilmiştir. LM35 sıcaklık sensörü ve SHT11 nem sensörü sırasıyla sıcaklık ve nem değişikliklerinin ölçümü ve kontrolünde kullanılmıştır. Kabin ısısı, rezistans ısıtıcının kabinin tabanına yerleştirilmesi ile sağlanır. Su haznesi nem değişimleri için rezistansın arkasına yerleştirilir. Kontrol sistemi sıcaklık değişimlerini 25 oC ile 40 oC aralığında ±0.1 % doğrulukla, bağıl nemi 45 ile 55 % RH aralığında ±5% doğrulukla ölçebilmektedir. Sıcaklık ve nem değişimleri PIC mikro denetleyici tarafından alınmakta ve 16x2 karakter LCD ekranda görüntülenmektedir. PIC ve bilgisayar arasındaki iletişim RS232 port ile sağlanmaktadır. Veri toplanıp, 12 saatlik bir inkübasyon periyodu boyunca depolanmakta ve 30 saniyelik zaman sürecinde excel tablosunda sunulmaktadır.

Anahtar Kelimeler:

Kontrollü Alan, Sıcaklık ve Nem Kontrol, Veri Kaydı

DESIGN AND CONSTRUCTION OF A TEST CABIN FOR MEDICAL APPLICATIONS

A test cabinet for medical applications has been implemented and constructed according to the standards. LM35 temperature sensor and SHT11 humidity sensor are used to measure and control the temperature and humidity variations respectively. Heating of the cabinet is provided by the resistor heaters placed on the bottom of the cabinet. Heated water reservoirs are placed at the back of the resistance for humidity variations. Control system can measure the temperature variations from 25 oC to 40 oC with an accuracy of ±0.1 oC and relative humidity range from 45% to 55% RH with an accuracy of ±5%.The temperature and humidity variations are received by the PIC microcontroller and displayed on 16x2 character LCD. The communication between PIC and PC is made by RS232 port. Data is collected, stored in 12 hours incubation period and presented on the excel table in 30 second time span.

Keywords:

Controlled Area, Heat and Humidity Control, Data Logging,

PDF

___

[1] A. Kürklü, ve N. Çağlayan, "Sera Otomasyon Sistemlerinin Geliştirilmesine Yönelik Bir Çalışma", Akdeniz Üniv. Ziraat Fak. Dergisi, 18(1), 25-34 (2005).
[2] M. Kocatürk, ve M. Salman M. “Otomobil Klima Sisteminde Fan Devri ve Giriş Havası Sıcaklığının Performansa Etkisinin Deneysel Olarak İncelenmesi”, Gazi Üniv. Politeknik Dergisi, 9(1), 28-37 (2006).
[3] I. Athanasopoulos, and L.A. Caffarelli, “Continuity of the temperature in boundary heat control problems”, Advances in Mathemathics, 224(1), 293-315 (2010).
[4] R. Romani, and L.C. Góes, “Cabin Temperature Control Model for Commercial Aircraft”, AIAA Modeling and Simulation Technologies Conference 2012, 133-139.
[5] S. Sanaye, M. Dehghandokht, and A. Fartaj, “Temperature control of a cabin in an automobile using thermal modeling and fuzzy controller”, Applied Energy, 97, 860-868 (2012).
[6] N.C. Lemke, J.L. Lemke, and J. Koehler, “Secondary Loop System for Automotiv HVAC Units Under Different Climatic Conditions”, International Refrigeration and Air Conditioning Conference, 2393- 2403,(2012).
[7] L.D. Knibbs, R.J. Dear, and L. Morawska,” Effect of Cabin Ventilation Rate on Ultrafine Particle Exposure Inside Automobiles”, Environ. Sci. Technol., 44 (9), 3546–3551 (2010).
[8] N. Hudda, E. Kostenidou, C. Sioutas, R.J.Delfino, and S.A. Fruin, “Vehicle and Driving Characteristics That Influence In-Cabin Particle Number Concentrations”, Environ. Sci. Technol., 45 (20), 8691–8697 (2011).
[9] S. Wahid, D.R. Cahela, and B.J. Tatarchuk, “Experimental, Theoretical, and Computational Comparison of Pressure Drops Occurring in Pleated Catalyst Structure”, Ind. Eng. Chem. Res., 52 (40),14472–14482 (2013).
[10] L.L.W. Mingshan, “Design and Experiment of a Heat Pump Air-conditioning System for Electric Vehicles”, Journal of Refrigeration, 3, 113 -120 (2013).
[11] S.H. Au, S.C.C. Shih, and A.R. Wheeler, “Integrated microbioreactor for culture and analysis of bacteria, algae and yeast”, Biomedical Microdevices, 13(1), 41-50 (2011).
[12] S.D. Frey, J. Lee, J.M. Melillo, and J. Six, “The temperature response of soil microbial efficiency and its feedback to climate”, Nature Climate Change, 3, 395-398 (2013).
[13] International Commission on Microbiological Specifications for Foods, Microbial Ecology of Foods V1: Factors Affecting Life and Death of Micoorganisms, Academic Press, New York, 311 (1980).
[14] W. Shen, P.G. Wolf, F. Carbonero, W. Zhong, T. Reid, H.R. Gaskins, and M.K. McIntosh, “Intestinal and Systemic Inflammatory Responses Are Positively Associated with Sulfidogenic Bacteria Abundance in High-Fat–Fed Male C57BL/6J Mice”, American Society for Nutrition – The Journal of Nutrition, 144 (8), 1187 – 1191 (2014).
[15] C.H. Park, C.H. Lee, M.D. Guiver, and Y.M. Lee, “Sulfonated hydrocarbon membranes for medium-temperature and low-humidity proton exchange membrane fuel cells (PEMFCs)”, Progress in Polymer Science, 36(11), 1443–1498 (2011).
[16] G:R. Harrod, B.A. Beers, G.E. Carmichael, and J.O. Bentz, “Indoor air quality controllers and user interfaces”, US 8219249 B2, (2012).
[17] R.C. Arora, “Refrigeration and Air Conditioning”, PHI Limited, New Delhi, 1987 (2010).
[18] G.W. Bahng, and J.D. Lee, “Development of heat-generating polyester fiber harnessing catalytic ceramic powder combined with heat-generating super microorganisms”, Textile Research Journal, doi: 10.1177/0040517513503732, (2014).
[19] M.A. Zamani, T.S. Sidhu, and A. Yazdani, “A Protection Strategy and Microprocessor-Based Relay for Low-Voltage Microgrids”, IEEE Transactıons On Power Delıvery, 26(3), 1873 – 1883 (2011).
[20] LM35 Precision Centigrade Temperature Sensors, datasheet for LM-35, Texas Instruments Company, SNIS159D –August 1999–Revised (2013).
[21] A. Beghi, L. Cecchinato, and M. Rampazzo, “Thermal and Comfort Control for Radiant Heating/Cooling Systems”, IEEE International Conference on Control Applications (CCA) Part of 2011 IEEE Multi-Conference on Systems and Control, 258 – 263, (2011).
[22] SHT10,SHT11,SHT15, Datasheet for SHT1x, Sensirion Sensor Company, revised date 17.01.2012.
[23] A.İ. Parmak, “Elektrostatik Toz Boya Kaplamanın Avantajları”, Erciyes Üniv. Fen Bilimleri Dergisi, 2, 295 – 298 (1986).
[24] Y. Konuklu, “Mikrokapsüllenmiş Faz Değiştiren Maddelerde Termal Enerji Depolama ile Binalarda Enerji Tasarrufu”, Doktora Tezi, Kimya Anabilim Dalı Çukurova Üniv., 172, (2008).