Design of Bioimpedance Spectroscopy to Characterize Meat Based on Gain and Phase Detector (AD8302)

Bio-impedance measurement of the test object is carried out by inserting an electric current and measuring its voltage using an electrode. The amount of bio-impedance is based on the assumption that the cell network is a conductor with extracellular and intracellular functions as resistors and capacitors. This principle is the basic for measuring the quality of meat using the bio-impedance spectroscopy method. In this research, bio-impedance spectroscopy has been built from the programable function generator AD9850, DC block which is composed of R and C components, each with a value of 1 kΩ and 100µF, Buffer and Voltage/current source (VCCS) which are composed of OPA 2134 Ammeters and The voltmeter are built from the AD620 differential amplifier, as well as the phase-gain detector from the AD8302. This device has been tried to determine the impedance and phase of objects of mutton, chicken, and beef. This device can distinguish the three types of meat and also provides information on changes in the characteristics of meat from day to day from the impedance value.