Title :
A digital signal-processing instrument for impedance measurement
Author :
Angrisani, L. ; Baccigalupi, A. ; Pietrosanto, A.
Author_Institution :
Salerno Univ., Italy
fDate :
12/1/1996 12:00:00 AM
Abstract :
A digital signal processing (DSP)-based instrument for impedance measurement is proposed. It implements two measurement techniques: the first technique allows the tracking of a time varying impedance to be carried out, and the second assures that good accuracy is obtained in reasonable measurement times. Both the software and the hardware of a prototype model are described in detail. The measurement rates and accuracy are evaluated and compared with those obtained using a reference Digibridge for a wide range of impedance values
Keywords :
bridge instruments; computer architecture; computerised instrumentation; digital instrumentation; digital signal processing chips; electric impedance measurement; signal processing equipment; accuracy; amplitude phase measurement; digital signal-processing instrument; hardware; impedance measurement; measurement rates; prototype model; reference Digibridge; software; time varying impedance; tracking; virtual bridge; Biomedical measurements; Bridge circuits; Capacitance; Digital signal processing; Hardware; Impedance measurement; Instruments; Oscillators; Signal processing algorithms; Time domain analysis;
Journal_Title :
Instrumentation and Measurement, IEEE Transactions on
