Compensation of fluidic transducers
AssigneeRegents for Education of the State of Rhode Island
InventorsLeland B. Jackson, Dov Jaron
Life of this patent
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Abstract
The output indications of fluid-filled transducers are compensated by filtering under the control of error analyser signals. In particular, the pressure waveform of a fluid-filled catheter is sampled and used to produce error signals that control a digital filter for the samples in order to compensate for measurement errors that are attributable to the physical characteristics of the catheter.
Claims8
The method of compensating digitized pressure waveform output indicators of a fluid-filled catheter transducer which comprises the steps of:
- (a) generating from the digitized pressure waveform output indications pole signals that are associated with the fluid-filled catheter;
- and,
- (b) inverse filtering the digitized pressure waveform output indications under the control of said pole signals to cancel said pole signals.
Apparatus for compensating digitized pressure waveform output indications of a fluid-filled catheter transducer which comprises:
- means for generating from said digitized pressure waveform output indications pole signals associated with the fluid-filled catheter;
- and,
- means for inverse filtering the digitized pressure waveform output indications under the control of said pole signals to cancel said pole signals.
Dependencies are inferred from the claim text.