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Hochgenaue Abstandsmessung mit Mikrowellen

High precision distance sensing using microwaves

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Zusammenfassung

Für berührungslose Abstandsmessungen in rauem industriellen Umfeld sind Mikrowellen wegen ihrer Insensitivität gegenüber Umwelteinflüssen besonders vorteilhaft. Das vorgestellte Nahbereichs-Abstandsmessgerät erzielt eine Genauigkeit von 0,1 mm. Dies wird durch den Einsatz dynamischer Frequenzteiler zur direkten Frequenzmessung und eines Sechstors zur Phasenbestimmung bei 35 GHz erreicht. Ein digitaler Signalprozessor berechnet daraus den Abstand.

Abstract

Using microwave technology for industrial sensing applications has the advantage of being insensitive to environmental influences. The presented near range radar has an accuracy of 0.1 mm. This high precision was achieved by using dynamic frequency divider chips for direct frequency measurement and a six-port for phase measurement at 35 GHz. A digital signal processor calculates the distance.

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Authors and Affiliations

  1. Institut für Nachrichtentechnik/Informationstechnik, Johannes Kepler Universität Linz, Altenberger Straße 69, A-4040, Linz

    A. Stelzer ÖVE IEEE

  2. Institut für Mikroelektronik, Johannes Kepler Universität Linz, Altenberger Straße 69, A-4040, Linz

    Ch. G. Diskus IEEE

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  1. A. Stelzer ÖVE IEEE
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Stelzer, A., Diskus, C.G. Hochgenaue Abstandsmessung mit Mikrowellen. Elektrotech. Inftech. 118, 8–16 (2001). https://doi.org/10.1007/BF03158641

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