Digital Compensation Unit for Impedance Metrology Working up to 2 MHz
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21230%2F11%3A00182420" target="_blank" >RIV/68407700:21230/11:00182420 - isvavai.cz</a>
Result on the web
<a href="http://dx.doi.org/10.1109/IDAACS.2011.6072709" target="_blank" >http://dx.doi.org/10.1109/IDAACS.2011.6072709</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1109/IDAACS.2011.6072709" target="_blank" >10.1109/IDAACS.2011.6072709</a>
Alternative languages
Result language
angličtina
Original language name
Digital Compensation Unit for Impedance Metrology Working up to 2 MHz
Original language description
This paper describes a design of two-channel digital compensation unit which has been developed for accuracy measurement of four-terminal-pair (4TP) impedance standards by the three-voltmeter method. The FPGA based compensation unit senses a residual voltage on the low potential port of the compared impedances continuously. The sensing process is made by means of a synchronous detection technique; a principle of the lock-in amplifiers is implemented on the FPGA. Simultaneously a voltage proportional tothe residual voltage is injected into a main measuring circuit via an injection transformer. Thanks to this feedback, residual voltages at low potential port of measured impedances are reduced more than 1000 times. A typical level of residual voltages isabout 5 uV. The compensation unit operates in the frequency range from 10 kHz up to 2 MHz. The unit is controlled by a PC via optical insulated USB port.
Czech name
—
Czech description
—
Classification
Type
D - Article in proceedings
CEP classification
JB - Sensors, detecting elements, measurement and regulation
OECD FORD branch
—
Result continuities
Project
—
Continuities
Z - Vyzkumny zamer (s odkazem do CEZ)
Others
Publication year
2011
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Article name in the collection
Intelligent Data Acquisition and Advanced Computing Systems (IDAACS)
ISBN
978-1-4577-1423-8
ISSN
—
e-ISSN
—
Number of pages
4
Pages from-to
50-53
Publisher name
IEEE
Place of publication
Piscataway
Event location
Prague
Event date
Sep 15, 2011
Type of event by nationality
EUR - Evropská akce
UT code for WoS article
—