Application of compensation techniques in a dsPIC based impedance measuring system

Author

Santos, José ; Ramos, Pedro M.

Author_Institution

Inst. de Telecomun., UTL, Lisbon, Portugal

fYear

2011

fDate

27-29 April 2011

Firstpage

1

Lastpage

4

Abstract

A dsPIC (Digital Signal Peripheral Interface Controller) based impedance measuring system was developed and implemented. The system measures the impedance´s amplitude and phase at the desired frequency using a sine-fitting algorithm running on the dsPIC and the results are sent to a personal computer using an USB or RS-232 connection. The measurement results are also shown in an LCD included in the device. This paper describes the system and details the OPEN and SHORT compensation techniques used to correct the measurements obtained with the device.

Keywords

computerised instrumentation; electric impedance measurement; liquid crystal displays; peripheral interfaces; signal processing equipment; LCD; compensation technique; digital signal peripheral interface controller; dsPIC; impedance amplitude; impedance measuring system; impedance phase; personal computer; sine fitting algorithm; Capacitors; Current measurement; Frequency estimation; Impedance; Impedance measurement; Resistors; OPEN and SHORT compensation; dsPIC; impedance measurement; sine-fitting;

fLanguage

English

Publisher

ieee

Conference_Titel

EUROCON - International Conference on Computer as a Tool (EUROCON), 2011 IEEE

Conference_Location

Lisbon

Print_ISBN

978-1-4244-7486-8

Type

conf

DOI

10.1109/EUROCON.2011.5929316

Filename

5929316