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Bauarten von Komparatoren in der Messtechnik
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ISBN10: 3668277230
ISBN13: 9783668277236
Publisher: Grin Verlag
Published: Aug 24 2016
Pages: 22
Weight: 0.09
Height: 0.05 Width: 5.83 Depth: 8.27
Language: German
ISBN13: 9783668277236
Publisher: Grin Verlag
Published: Aug 24 2016
Pages: 22
Weight: 0.09
Height: 0.05 Width: 5.83 Depth: 8.27
Language: German
Studienarbeit aus dem Jahr 2015 im Fachbereich Ingenieurwissenschaften - Maschinenbau, Sprache: Deutsch, Abstract: Die Erfassung sowie die Weiterverarbeitung von Messdaten sind heutzutage kaum noch ohne Verbindung zu einem Computersystem denkbar und werden meist in einem einzigen Prozess zusammengefasst. Dieses ganzheitliche Verfahren beinhaltet die Planung der Messaufgaben, die Realisierung von Ablaufsteuerungen, die Überwachung von Prozessen, die Steuerung von Prüfständen oder die statistische Analyse von Rohdaten (BER 14, S. 29) und strebt integrierte Lösungen an. Bei der Messung werden Signale, oder eben Messgrö en, über Sensoren erfasst und in Ströme oder Spannungen umgesetzt. Mit dem A/D-Wandler werden diese anschlie end für den Rechner konditioniert. AD-Umsetzer, kurz für Analog/Digital-Wandler, sind essenzielle Komponenten in der elektronischen Messtechnik. Sie vereinen die Welt der analogen Messgrö en, Sensoren und Verstärker mit der digitalen Welt der Rechner (SCH 12, S. 304). Die Eingangssignale der A/D-Umsetzer sind amplitudenanalog, die Ausgangssignale jedoch sind zeit- und wertdiskret, also digital. Die Wandler lassen sich grundsätzlich in zwei gro e Gruppen unterteilen: Bei den direkt vergleichenden Umsetzer werden Spannungen lediglich verglichen, bei den indirekten werden umzusetzenden Spannungen in Frequenzen oder Zeitintervalle umgewandelt und anschlie end gemessen. Bei ersteren, also den direkt Vergleichen, darf sich während der Umwandlung der Messwert nicht ändern. Stattdessen wird er in einem Abtast- und Halteglied gespeichert.
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