Electrical transmission or interconnection systems – Switching systems – Condition responsive
Reexamination Certificate
2006-11-07
2006-11-07
Deschere, Andrew M. (Department: 2836)
Electrical transmission or interconnection systems
Switching systems
Condition responsive
C324S076420, C341S123000, C702S193000, C700S074000
Reexamination Certificate
active
07132766
ABSTRACT:
A technique for controlling a switching circuit, such as a relay, includes one or more sensing circuits that generate signals based upon the presence of an actuating object and upon a randomly applied strobe signal. The generated signals are sampled and are used as a basis for determining the state of an output signal. The sensing circuit may generate the signals based upon capacitive coupling with the actuating object. The randomization of the sampling provides enhanced immunity to periodic or cyclic noise. Where more than one sensing circuit is included, the output of the circuits may be considered together for determining the state of the output signal, such as based upon predetermined ranges of signal levels. Signals of the sensing circuit may be sampled in the absence of the strobe to provide an indication of the relative noise level. If the noise level is determined to be elevated, the output signal may not change states.
REFERENCES:
patent: 2688876 (1954-08-01), Mills
patent: 4578598 (1986-03-01), Faulhaber
patent: 4678345 (1987-07-01), Agoston
patent: 5243181 (1993-09-01), Bondarev et al.
patent: 5790107 (1998-08-01), Kasser et al.
patent: 5796183 (1998-08-01), Hourmand
patent: 5920309 (1999-07-01), Bisset et al.
patent: 6215119 (2001-04-01), Markham et al.
patent: 6411928 (2002-06-01), Tsurufuji et al.
Brandt David Dale
Gasperi Michael Lee
Nguyen Thong T.
Deschere Andrew M.
Gerasimow Alexander M.
Rockwell Automation Technologies Inc.
Yoder Patrick S.
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