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Naslov:Measurements of Small Frequency Differences by Dual Mode 4 MHz Quartz Sensors
Avtorji:ID Matko, Vojko (Avtor)
Datoteke:.pdf Matko-2023-Measurements_of_Small_Frequency_Dif.pdf (4,21 MB)
MD5: 5F8F76F43233145DFE886A1112452B92
 
URL https://www.mdpi.com/1424-8220/23/6/3220
 
Jezik:Angleški jezik
Vrsta gradiva:Članek v reviji
Tipologija:1.01 - Izvirni znanstveni članek
Organizacija:FERI - Fakulteta za elektrotehniko, računalništvo in informatiko
Opis:We proposed a method for measuring frequency differences of the order of a few Hz with an experimental error lower than 0.0001% by using two 4 MHz quartz oscillators, the frequencies of which are very close (a few 10 Hz difference) due to the dual mode operation (differential mode with two temperature-compensated signal frequencies or a mode with one signal and one reference frequency). We compared the existing methods for measuring frequency differences with the new method which is based on counting the number of transitions through zero within one beat period of the signal. The measuring procedure requires equal experimental conditions (temperature, pressure, humidity, parasitic impedances etc.) for both quartz oscillators. To ensure equal resonant conditions for oscillation two quartz crystals are needed, which form a temperature pair. The frequencies and resonant conditions of both oscillators must be almost equal, which is achieved by an external inductance or capacitance. In such a way, we minimized all the external effects and ensured highly stable oscillations and high sensitivity of the differential sensors. The counter detects one beat period by an external gate signal former. By using the method of counting transitions through zero within one beat period, we reduced the measuring error by three orders of magnitude, compared to the existing methods.
Ključne besede:small frequency difference measurement, temperature-compensated quartz sensors, differential sensors, quartz oscillators, transitions-through-zero method
Status publikacije:Objavljeno
Verzija publikacije:Objavljena publikacija
Poslano v recenzijo:02.02.2023
Datum sprejetja članka:15.03.2023
Datum objave:17.03.2023
Založnik:MDPI
Leto izida:2023
Št. strani:Str. 1-11
Številčenje:Letn. 23, Št. 6, št. članka 3220
PID:20.500.12556/DKUM-87733 Novo okno
UDK:621.317
COBISS.SI-ID:145579779 Novo okno
DOI:10.3390/s23063220 Novo okno
ISSN pri članku:1424-8220
Avtorske pravice:© 2023 by the author
Datum objave v DKUM:26.03.2024
Število ogledov:357
Število prenosov:246
Metapodatki:XML DC-XML DC-RDF
Področja:Ostalo
:
MATKO, Vojko, 2023, Measurements of Small Frequency Differences by Dual Mode 4 MHz Quartz Sensors. Sensors [na spletu]. 2023. Vol. 23, no. Št. 6,  članka 3220, p. 1–11. [Dostopano 10 april 2025]. DOI 10.3390/s23063220. Pridobljeno s: https://dk.um.si/IzpisGradiva.php?lang=slv&id=87733
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Gradivo je del revije

Naslov:Sensors
Skrajšan naslov:Sensors
Založnik:MDPI
ISSN:1424-8220
COBISS.SI-ID:10176278 Novo okno

Gradivo je financirano iz projekta

Financer:ARRS - Agencija za raziskovalno dejavnost Republike Slovenije
Številka projekta:P2-0028
Naslov:Mehatronski sistemi

Licence

Licenca:CC BY 4.0, Creative Commons Priznanje avtorstva 4.0 Mednarodna
Povezava:http://creativecommons.org/licenses/by/4.0/deed.sl
Opis:To je standardna licenca Creative Commons, ki daje uporabnikom največ možnosti za nadaljnjo uporabo dela, pri čemer morajo navesti avtorja.
Začetek licenciranja:17.03.2023

Sekundarni jezik

Jezik:Slovenski jezik
Ključne besede:majhne frekvence meritev, senzorji, oscilatorji


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