A multi-channel electrical impedance measurement system using DSP

2010 ◽  
Author(s):  
Wei He ◽  
Kang Ju ◽  
Bing Li ◽  
Zheng Xu ◽  
Chuanhong He
Keyword(s):  
Measurement System ◽  
Electrical Impedance ◽  
Impedance Measurement ◽  
Electrical Impedance Measurement

scholarly journals Multi-Frequency Electrical Impedance Measurement on a Wooden Disc Sample

2015 ◽  
Vol 11 (2) ◽  
pp. 153-162 ◽  
Author(s):  
Zoltán Vizvár ◽  
Tibor Kiss ◽  
Kálmán Máthé ◽  
Péter Odry ◽  
Csaba Vér ◽  
...  
Keyword(s):  
Spatial Resolution ◽  
Measurement System ◽  
Electrical Impedance ◽  
Measurement Techniques ◽  
Impedance Measurement ◽  
Chemical Information ◽  
Wood Material ◽  
Impedance Tomography ◽  
Living Tree ◽  
Electrical Impedance Measurement

Abstract Non-invasive measurement techniques are widely used for the investigation of living tree and wood material. Principles and methods from other fields of science form the basis of these techniques. Electrical impedance measurement, which is adopted mainly from applied geophysics, plays an important role in the investigation of living trees and wood material. Unlike other measurement techniques that provide mainly physical information, electrical impedance measurement is able to gather either physical or chemical information. There are several published accounts of the use of Electrical Impedance Tomography mainly for examining internal decay, estimation of sapwood, and heartwood width. The advantages of the method are its low costs and rapid execution; however, low spatial resolution is still one of the most glaring limits of the method. Use of a new, self-developed, high resolution measurement system provides new opportunities to gain better insights into the characterisation of wood material. As well as high accuracy and resolution, the measurement system is able to operate in a wide frequency range. This expands the examined parameters making it possible to extend the gained information and develop new methods for the investigation of living trees and wood material. The aim of our publication is to introduce some experimental results in the investigation of spatial resolution our system measured on a wooden disc.

Sign in / Sign up

Export Citation Format

Share Document