DESIGN AND CONSTRUCTION OF A TEST CABIN FOR MEDICAL APPLICATIONS

Öz

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.

Anahtar Kelimeler

• Controlled Area,Heat and Humidity Control,Data Logging

TIBBİ KULLANIM AMAÇLI DENEY KABİNİ TASARIMI VE İMALATI

Öz

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

Kaynakça

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