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US 2006/0132346 A1Published application
Digital data acquisition system
AssigneeMilad Technology Inc.
InventorsBjami Tryggvason, Amr El Kholy
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Abstract
A digital data acquisition system includes a buffer amplifier for receiving an analog signal and attenuating all but those frequencies of interest, a low pass filter, a driver amplifier, an analog to digital converter for converting the analog signal to a digital signal, and a digital signal processor, which is preferably a field programmable gate array incorporating a digital filter and for effecting down sampling of a signal.
Claims7
A digital data acquisition system comprising:
- (a) buffer amplifier means for receiving and amplifying an analog signal;
- (b) low pass filter means for filtering an amplified analog signal from the buffer amplifier means;
- (c) drive amplifier means;
- (d) analog to digital converter means for converting the analog signal to a digital signal;
- and
- (e) processor means for filtering and down sampling of a digital signal received from the converter means.
3 more elements
A method for converting an analog signal to a digital signal comprising the steps of:
- (a) passing the analog signal through a buffer amplifier to amplify the signal;
- (b) effecting low pass filtering of the analog signal;
- (c) passing the filtered signal through a drive amplifier;
- (d) converting the analog signal to a digital signal;
- and
- (e) digital filtering and down sampling the digital signal, wherein a low pass cutoff frequency during low pass filtering of the analog signal is fixed and is matched to a fixed sampling rate of the analog to digital converter, a desired overall cutoff frequency is implemented by digital filtering during the digital filtering and down sampling step, the desired output sampling rate is implemented in the down sampling step, and the cutoff frequency of the digital filter is matched to the output rate of the down sampling step.
3 more elements
Dependencies are inferred from the claim text.