Vibration-analysis system and method therefor
AssigneeSymroc Business and Project Management Ltd.
InventorWilson HOWE
Life of this patent
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Abstract
A vibration-analysis system has one or more server computers, one or more client-computing devices, and one or more vibration-detection units functionally connected via a network. The one or more vibration-detection units may be deployed in a site for vibration detection. The detected vibration data is sent to the one or more server computers for vibration/seismic analysis. The system disclosed herein may be used for vibration/seismic survey, vibration monitoring, and the like. Each vibration-detection unit may have a vibration-detection sensor and a positioning module for automatically determining the position thereof. The vibration-detection units may be geophones and the system may have a signal process module for compensating for the distortion introduced by the geophones.
Claims12
A vibration-detection system comprising:
- a vibration-detection sensor for detecting vibration and outputting a first signal, the vibration-detection sensor having a first s-domain transfer function;
- an analog-to-digital (A/D) converter functionally coupled to the vibration-detection sensor for converting the first signal to a second signal in a discrete-time domain;
- a signal-processing module functionally coupled to the vibration-detection sensor for processing the second signal in discrete-time using a digital filter to compensate for a distortion therein introduced by the vibration-detection sensor, the digital filter comprising a plurality of amplifiers and unit delays;
- and
- an output for outputting the processed second signal;
- wherein the digital filter has a z-domain transfer function which is a discrete-time equivalence of a second s-domain transfer function under a predetermined sampling method and a predetermined sampling frequency;
- and
- wherein the second s-domain transfer function is an inverse of the first s-domain transfer function of the vibration-detection sensor.
A non-transitory, computer-readable storage device comprising computer-executable instructions for processing an output signal of a vibration-detection sensor for compensating for a distortion therein introduced by the vibration-detection sensor, the vibration-detection sensor having a first s-domain transfer function, wherein the instructions, when executed, cause a processor to perform actions comprising:
- processing the output signal of the vibration-detection sensor using a digital filter for compensating for the distortion therein introduced by the vibration-detection sensor;
- and
- outputting the processed output signal of the vibration-detection sensor;
- wherein the digital filter has a z-domain transfer function which is a discrete-time equivalence of a second s-domain transfer function under a predetermined sampling method and a predetermined sampling frequency;
- and
- wherein the second s-domain transfer function is an inverse of the first s-domain transfer function of the vibration-detection sensor.
A computerized method for conducting a seismic survey in a site, the method comprising:
- deploying at least one vibration-detection unit in the site, the at least one vibration-detection sensor having a first s-domain transfer function;
- receiving a vibration signal from the at least one vibration-detection unit;
- using a digital filter to process the vibration signal for compensating for a distortion therein;
- analyzing the compensated vibration signal for the seismic survey;
- and
- outputting the analysis result;
- wherein the digital filter has a z-domain transfer function which is a discrete-time equivalence of a second s-domain transfer function under a predetermined sampling method and a predetermined sampling frequency;
- and
- wherein the second s-domain transfer function is an inverse of the first s-domain transfer function of the vibration-detection sensor.
Dependencies are inferred from the claim text.