The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 05, 1986
Filed:
Jun. 27, 1983
Carl Fisher, Jr, Louisville, CO (US);
Charles R Carrington, Longmont, CO (US);
George A Grant, Longmont, CO (US);
Integrated Sciences, Inc., Longmont, CO (US);
Abstract
Apparatus is disclosed for failure prediction of earth structures. The apparatus is intrinsically safe with all necessary electronics contained in a portable central unit except for a sensor and a preamplifier which are positioned contiguous to an earth structure to be monitored and are connected through an electrical cable to the central unit. The entire apparatus is powered by a six volt battery power source also contained in the central unit with electrical isolation being featured. The apparatus monitors the selected earth structure and predicts failure through analysis of determined microseismic emissions arising from changes in mechanical loading of the selected earth structure. In the central unit, microseismic emissions from the sensor and preamplifier are continuously received, conditioned and then utilized to form event and energy counts which are supplied to a computer that is controlled in such a manner so as to analyze the incoming data and determine therefrom imminent failure of the monitored earth structure with such detected failure being automatically immediately indicated. The apparatus is particularly useful in harzardous environments and in close proximity to personnel whose safey depends upon the relative stability of the earth structure, and is therefore particularly useful in underground mines to predict earth structure failures such as roof falls.