[ABSTRAK
Jaminan mutu atas keakuratan alat ukur di bidang kesehatan merupakan kebutuhan yangmutlak diperlukan pada masa ini. Salah satu alat yang perlu dikalibrasi adalah infusion pumpanalyser. Alat ini berfungsi menguji pompa infus yang bekerja pada aliran rendah, yangdigunakan di rumah sakit apakah masih layak pakai atau tidak. Sebagai peralatan uji, infusionpump analyser harus terkalibrasi untuk menjamin keakuratan hasil pengujiannya. Padapenelitian ini akan dikembangan sistem kalibrasi yang beroperasi pada laju aliran rendah.Sistem terdiri dari aktuator linear yang menggerakan siringe dari gelas kaca. Aktuator linearterdiri dari ulir bola, linear guide way, rangkaian roda gigi yang terhubung ke motor d.c.Kecepatan motor d.c. dikendalikan oleh FPGA dengan menggunakan metode pulse widthmodulation. FPGA juga digunakan untuk membaca keluaran rotary encoder yang terhubungke poros roda gigi untuk memantau kecepatan aktuator. Untuk mengkarakterisasi sistem,pertama osilator FPGA dikalibrasi terhadap universal counter untuk menvalidasi pengukuranwaktunya. Kemudian aktuator dikalibrasi menggunakan kaliper untuk menverifikasipergerakan linearnya. Dalam proses ini diamati efek dinamis dari faktor kalibrasi enkoder,yang membawa kepada penentuan kecepatan intrinsik dari sistem. Dengan menggunakankecepatan intrinsik dan faktor alat, maka volume dan laju alir yang dibangkitkan oleh sistemdapat ditentukan. Selanjutnya sistem diuji secara gravimetri berdasarkan ISO/FDIS 8655-1,dan didapatkan hasil ketidakpastian pengukuran yang tidak memenuhi syarat. Setelahmelakukan penyelidikan lanjut dengan simulasi pada perhitungan pengukuran, didapatkanbahwa kapasistas silinder perlu diperbesar agar ketidakpastian pengukuran yang dibutuhkandapat dicapai.
ABSTRACT
Quality assurance of the accuracyof measuring instruments in the health industry isnecessary. One of the instruments that need to be calibrated is Infusion pump analyzer. Thisinstruments is used to test infusion pumps used in hospital at low flow rate. As testequipment, infusion pump analyzer must be calibrated to ensure the accuracy of test results.In this study, a low flow rate calibration system is developed. The system consist of linearactuator to move a glass syringe. The linear actuator consist a linear ball screw, linear guideway, and gear box connected to d.c. motor. The motor controlled by FPGA using pulsewidth modulation method. FPGA also use to read rotary encoder that connected to gearboxshaft to monitor actuator speed. To characterized the system, first the FPGA oscilator iscalibrated to universal counter to validated the time measurement. Then the actuator iscalibrated using caliper to verify its linear movement. In this porocess a dynamic efect ofencoder meter factor are discovered. This dynamic effect lead to determining intrinsic speedof the system. The intrinsic speed together with meter factor are used to determine volumeand flowrate generated by the system. The system then tested using gravimetric method baseup on ISO/FDIS 8655-1 and the result of measurement uncertainty is not satisfying. Afterfurther investigation using simulation on measurement calculation, it is found that thecapacity of syringe should be increased to achieve required uncertainty.;Quality assurance of the accuracyof measuring instruments in the health industry isnecessary. One of the instruments that need to be calibrated is Infusion pump analyzer. Thisinstruments is used to test infusion pumps used in hospital at low flow rate. As testequipment, infusion pump analyzer must be calibrated to ensure the accuracy of test results.In this study, a low flow rate calibration system is developed. The system consist of linearactuator to move a glass syringe. The linear actuator consist a linear ball screw, linear guideway, and gear box connected to d.c. motor. The motor controlled by FPGA using pulsewidth modulation method. FPGA also use to read rotary encoder that connected to gearboxshaft to monitor actuator speed. To characterized the system, first the FPGA oscilator iscalibrated to universal counter to validated the time measurement. Then the actuator iscalibrated using caliper to verify its linear movement. In this porocess a dynamic efect ofencoder meter factor are discovered. This dynamic effect lead to determining intrinsic speedof the system. The intrinsic speed together with meter factor are used to determine volumeand flowrate generated by the system. The system then tested using gravimetric method baseup on ISO/FDIS 8655-1 and the result of measurement uncertainty is not satisfying. Afterfurther investigation using simulation on measurement calculation, it is found that thecapacity of syringe should be increased to achieve required uncertainty., Quality assurance of the accuracyof measuring instruments in the health industry isnecessary. One of the instruments that need to be calibrated is Infusion pump analyzer. Thisinstruments is used to test infusion pumps used in hospital at low flow rate. As testequipment, infusion pump analyzer must be calibrated to ensure the accuracy of test results.In this study, a low flow rate calibration system is developed. The system consist of linearactuator to move a glass syringe. The linear actuator consist a linear ball screw, linear guideway, and gear box connected to d.c. motor. The motor controlled by FPGA using pulsewidth modulation method. FPGA also use to read rotary encoder that connected to gearboxshaft to monitor actuator speed. To characterized the system, first the FPGA oscilator iscalibrated to universal counter to validated the time measurement. Then the actuator iscalibrated using caliper to verify its linear movement. In this porocess a dynamic efect ofencoder meter factor are discovered. This dynamic effect lead to determining intrinsic speedof the system. The intrinsic speed together with meter factor are used to determine volumeand flowrate generated by the system. The system then tested using gravimetric method baseup on ISO/FDIS 8655-1 and the result of measurement uncertainty is not satisfying. Afterfurther investigation using simulation on measurement calculation, it is found that thecapacity of syringe should be increased to achieve required uncertainty.] |
T42851-Bernadus Herdi Sirenden.pdf :: Unduh