alexa Abstract | Hemoglobin concentration measurement based on magnetic sensor

Journal of Chemical and Pharmaceutical Research
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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.

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Author(s): Ahmad Aminudin Mitra Djamal Suprijadi and Daryono Hadi Tjahyono


Hemoglobin Concentration, GMR sensor, Sensitivity, Magnetization, Flow rate, Hemoglobin concentration

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