DESIGN AND CONSTRUCTION OF A TEST CABIN FOR MEDICAL APPLICATIONS

Year 2015, Issue: 034, 99 - 110, 15.06.2015

Onur Koçak , Mehmet Cüneyt Şen Erdi Arslan Arif Koçoğlu

Abstract

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

TIBBİ KULLANIM AMAÇLI DENEY KABİNİ TASARIMI VE İMALATI

Abstract

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.

Keywords

Kontrollü Alan, Sıcaklık ve Nem Kontrol, Veri Kaydı

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