Interrogation method for passive sensor monitoring system

Data processing: measuring – calibrating – or testing – Measurement system in a specific environment – Electrical signal parameter measurement system

Reexamination Certificate

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C340S572100

Reexamination Certificate

active

07065459

ABSTRACT:
A method of determining the frequency of a plurality of resonant devices (for example three SAW devices) includes determining optimal interrogation frequencies for each of the devices, the optimal interrogation frequencies having maximum power spectral densities, accumulating a plurality of responses for each sensor, performing discrete Fourier transforms on the sampling results to estimate the three resonant frequencies, and averaging the results of the Fourier transforms to provide an indication of resonant frequencies. The averaging step may include the calculation of a standard deviation and the rejection of any results which fall more than a pre-determined multiple of the standard deviation from the average frequency result. The frequency determined by the method may be employed to calculate the pressure and temperature of the sensor devices. The sensor devices may be located in a vehicle tire.

REFERENCES:
patent: 3737911 (1973-06-01), Sakuragi et al.
patent: 4497065 (1985-01-01), Tisdale et al.
patent: 4625207 (1986-11-01), Skeie
patent: 4672641 (1987-06-01), Yen et al.
patent: 4725841 (1988-02-01), Nysen et al.
patent: 4794395 (1988-12-01), Cindrich et al.
patent: 5019815 (1991-05-01), Lemelson et al.
patent: 5119070 (1992-06-01), Matsumoto et al.
patent: 5305008 (1994-04-01), Turner et al.
patent: 5381137 (1995-01-01), Ghaem et al.
patent: 5444223 (1995-08-01), Blama
patent: 5691698 (1997-11-01), Scholl et al.
patent: 6114971 (2000-09-01), Nysen
patent: 6259991 (2001-07-01), Nysen
patent: 6486776 (2002-11-01), Pollack et al.
patent: 6617962 (2003-09-01), Horwitz et al.
patent: 6633226 (2003-10-01), Nysen
patent: 6765476 (2004-07-01), Steele et al.
patent: 2002/0019702 (2002-02-01), Nysen
patent: 2002/0138199 (2002-09-01), Brodie
patent: 2002/0158752 (2002-10-01), Steele et al.
patent: 2004/0030496 (2004-02-01), Brodie
patent: 2004/0085191 (2004-05-01), Horwitz et al.
patent: 2004/0108904 (2004-06-01), Heide et al.
patent: 2004/0203478 (2004-10-01), Scott
patent: 2004/0211260 (2004-10-01), Girmonsky et al.
patent: 0 578 826 (1994-01-01), None
patent: 2 355 801 (2001-05-01), None
A. Pohl, G. Ostermayer and Franz Seifert; Wireless Sensing Using Oscillator Circuits Locked to Remote High-Q SAW Resonators; IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control, Sep. 1998,; pp. 1161-1168; vol. 45. No. 5.

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