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Specifying the Freshness of Eggs Using Microwave Sensors*

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Abstract

This paper introduces a microwave measurement setup, using three microstrip antennas integrated with a microwave oscillator, and Schottky-diode detectors used as bistatic microwave sensors. We have measured the microwave attenuation (water content) and the bistatic radar cross section (dimensions) of eggs having different storage times (Fig. 1). The measured attenuation (A) for fresh egg, at a frequency of 14.2 GHz is A=8–10 dB; the variation with time is dA [dB]=−0.033T (days), thus nearly −1 dB/30 days. Our next project is to create a microwave device for the automatic selection of old eggs. The basic experimental design and the results of our measurements are discussed.

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References

  1. Nagy, J., and Salgo, A., 1997, Procedure and equipment for specifying the freshness of eggs, Report (in Hungarian): BME-BET, Budapest, November, OMFB-05677960416.

  2. Annan, A. P., 1992, Ground penetrating radar workshop notes: Sensors & Software Inc., Canada, October, p. 127.

    Google Scholar 

  3. Daniels, D. J., 1996, Surface penetrating radar: Short Run Press Ltd., Exeter, ISBN 0 85296 862 0, p. 192–260.

    Google Scholar 

  4. Völgyi, F., 1987, Subsurface interface radar for coal-detection (in Hungarian): TUB/DMT, Research Report, November, No. 427.085/87.

  5. Völgyi, F., 1998, Microwave measurements for specifying the freshness of eggs, Report (in Hungarian): BME-MHT, Budapest, November.

  6. Völgyi, F., 1999, Microwave measurements for specifying the freshness of eggs: Third Workshop on Electromagnetic Wave Interaction with Water and Moist Substances, April 11–13, 1999, Athens, GA, USA, p. 52–56.

  7. Völgyi, F., 1989, Versatile microwave moisture sensor: SBMO'89 Proc. International Microwave Symposium, Brazil, Sao Paulo, 24–27 July, v. II, p. 456–462.

    Google Scholar 

  8. Völgyi, F., 1996, Integrated microwave moisture sensors for automatic process control, in Kraszewski, A., ed., Microwave aquametry: IEEE Press, New York, p. 223–238, ISBN 0–7803–146–9.

    Google Scholar 

  9. Völgyi, F., Mojzes, I., Kelemen, M., Racz, I., Seller, R., Sonkoly, A., Divos, F., and Zombori, B., 1996, Treatment and instrument for measuring of substances, Advantageously Applied for Moving Multilayer Materials (in Hungarian): Patent, June, MSzHP 9601630.

  10. Beke, J., and Völgyi, F., 1996, Interactions of kernel features and field parameters in microwave drying of corn: APMC'96 Asia-Pacific Microwave Conference, New Delhi, India, December 17–20, p. 383–386.

  11. Völgyi, F., 1997, Polarimetric Measurements of grain permittivity in free space using small-and large-signal levels (in Hungarian): Research Study, TUB/DMT.

  12. Nyul, L., and Völgyi, F., 1998, Contactless testing of particleboards: APMC'98, Yokohama, Japan, December 8–11, p. 213–216.

  13. Völgyi, F., 1999, Quality forecast of particleboards using a microwave monitoring system: Third Workshop on Electromagnetic Wave Interaction with Water and Moist Substances, Athens, GA, April 11–13, Collection of Papers, p. 102–106.

  14. Völgyi, F., Nyul, L., Tatar, S., and Mrovcza, A., 1999, A new radio frequency absorber for GTEM cell applications: EMC Zurich'99, 13th International Zurich Symposium on Electromagnetic Compatibility, February 16–18, p. 675–678.

  15. Völgyi, F., 1999, Microstrip antenna R&D in Hungary: Proc. 10th MICROCOLL, Budapest, Hungary, March 21–24, p. 249–252.

  16. Hansen, R. C., ed., 1964, Microwave scanning antennas: Academic Press, New York, CCCN: 64–20319.

    Google Scholar 

  17. Völgyi, F., Reiter, G., Berceli, T., and Veszely, G., 1997, A whispering gallery mode transducer using microstrip-slot antenna exciter: 27th EuMC, Jerusalem, Israel, September 8–12, p. 168–174.

  18. Bachman, Ch. G., 1982, Radar targets: Lexington Books, ISBN 0–669–05232–9, Lexington, MA.

    Google Scholar 

  19. Völgyi, F., 1999, Detection of subsurface water content of eggs using bistatic microwave sensors: Paper No. 3752–08 at the International Symposium on Optical Science, Engineering and Instrumentation (SPIE's 44th Annual Meeting), July 18–23, Denver, Colorado.

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  1. Department of Microwave Telecommunications H-1111, Technical University of Budapest, Budapest, Goldmann ter 3, Hungary

    Ferenc Völgyi

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  1. Ferenc Völgyi
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Völgyi, F. Specifying the Freshness of Eggs Using Microwave Sensors*. Subsurface Sensing Technologies and Applications 1, 119–139 (2000). https://doi.org/10.1023/A:1010178827734

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  • DOI: https://doi.org/10.1023/A:1010178827734

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