700 Journals and 15,000,000 Readers Each Journal is getting 25,000+ ReadersThis Readership is 10 times more when compared to other Subscription Journals (Source: Google Analytics)
Original Articles Open Access
The paper presents the measurement system of hemoglobin concentration using ginat magnetoreistance (GMR) sensor. Hemoglobin was magnetized by a strong magnetic field 1,1T.The hemoglobin was influenced by an external magnetic field. Then, the magnetic field of hemoglobin was detected by GMR sensor. GMR sensor circuit was developed using wheatstone bridge.The results of tests are obtained using sensitivity parameter of GMR sensor . Respons of the voltage of GMR sensor versus the concentration of hemoglobin have been obtained the linear equations. A strong correlation between the voltage of GMR sensor and the concentration of hemoglobin was revealed. The sensitivity of GMR sensor were 20.22 / , 20.34 / , 20.45 / , 20.59 / and 20.95 / for the flow rate 0.29 cm/s, 0.31 cm/s, 0.33 cm/s, 0.35 cm/s and 0.37 cm/s respectively. The sensitivity of GMR sensor increased with increase of flow rate and concentration of hemoglobin. Incresing the flow rate, rising the unbalance of the bridge circuit and incresing the zero drift of GMR sensor. The prototype of hemoglobin concentration measurement has developed successfully.
To read the full article Peer-reviewed Article PDF
Author(s): Ahmad Aminudin Mitra Djamal Suprijadi and Daryono Hadi Tjahyono
Hemoglobin Concentration, GMR sensor, Sensitivity, Magnetization, Flow rate, Hemoglobin concentration