Patent ID: 6906532
Filing Date: 2005-06-14
Classification: G01B,G01D,G01N

Abstract:
1. A method for digitally measuring electrical impedance, the steps including: forming a network including providing a first electrical component and a second electrical component serially connected; driving the network with a dynamic signal for impressing a voltage across the network and each component; digitizing the voltage across the network and the voltage across the second electrical component; convolving each of the digitized voltages with a digital waveform for forming a first complex number and a second complex number correlative to the voltages across the network and across the second electrical component respectively; determining a ratio of the second complex number to a difference between the first complex number and the second complex number; calculating an electrical impedance of the second electrical component by multiplying the ratio by a know digitized value of the first electrical component wherein said electrical impedance of the second component is digitally measured.