System and method for monitoring an analog data signal
First Claim
1. A method for monitoring an analog data signal, said method comprising the steps of:
- receiving said analog data signal;
bandpass filtering said analog data signal over a plurality of frequency ranges to produce a corresponding plurality of bandpass filtered analog data signals;
rectifying said plurality of bandpass filtered analog data signals to produce a corresponding plurality of rectified bandpass filtered analog data signals;
integrating said plurality of rectified bandpass filtered analog data signals to produce a corresponding plurality of integrated bandpass filtered analog data signals; and
processing said plurality of integrated bandpass filtered analog data signals.
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Abstract
A system and method for monitoring an analog data signal is provided that includes an analog data compression subsystem. The analog data compression subsystem includes a frequency bandpass filter, a rectifier, and an integrator such as a leaky integrator or one that is reset after being sampled. An analog data signal is bandpass filtered by the frequency bandpass filter, rectified, and integrated in the analog domain. The output of the integrator is converted into a digital data value by an analog-to-digital converter circuit that samples the integrator at a desired sample rate or duty cycle. The output of the integrator can trigger an event based upon established criteria. Multiple analog data compression subsystems can be used in parallel to monitor multiple frequency bands-of-interest.
24 Citations
21 Claims
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1. A method for monitoring an analog data signal, said method comprising the steps of:
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receiving said analog data signal; bandpass filtering said analog data signal over a plurality of frequency ranges to produce a corresponding plurality of bandpass filtered analog data signals; rectifying said plurality of bandpass filtered analog data signals to produce a corresponding plurality of rectified bandpass filtered analog data signals; integrating said plurality of rectified bandpass filtered analog data signals to produce a corresponding plurality of integrated bandpass filtered analog data signals; and processing said plurality of integrated bandpass filtered analog data signals. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A system for monitoring an analog data signal comprising:
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a bandpass filter circuit that receives said analog data signal and produces a plurality of bandpass filtered analog data signals corresponding to a plurality of frequency ranges of interest; a rectifier circuit that rectifies said plurality of bandpass filtered analog data signals to produce a plurality of rectified bandpass filtered analog data signals; an integrator circuit that integrates said plurality of rectified bandpass filtered analog data signals to produce a plurality of integrated bandpass filtered analog data signals; and a processing circuit that processes said plurality of integrated bandpass filtered analog data signals. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18, 19)
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20. A method of monitoring an analog data signal, said method comprising the steps of:
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receiving from a sensor said analog data signal; bandpass filtering said analog data signal over a plurality of frequency ranges; integrating said plurality of bandpass filtered analog data signal; and processing said plurality of integrated bandpass filtered analog data signal. - View Dependent Claims (21)
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Specification