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:
Apr. 21, 2020
Filed:
Aug. 18, 2017
Shooter Detection Systems, Llc, Newburyport, MA (US);
Ronald A Fowler, Westford, MA (US);
Richard Thomas Onofrio, Arlington, MA (US);
Shooter Detection Systems, LLC, Newburyport, MA (US);
Abstract
Indoor gunshot detection analysis is performed in the presence of a fire alarm. A gunshot sensor, which includes infrared and acoustic sensors, is used to detect an infrared pulse, whether the pulse originates from a muzzle flash or a fire alarm strobe. The infrared pulse is determined to correspond to a strobe occurrence. An evaluation determines that a gunshot did or did not occur based on the strobe occurrence. In another embodiment, a gunshot is detected while the fire alarm is occurring, where the gunshot occurs at a different time from the strobe occurrence and can be sensed by the acoustic sensor. A fire alarm strobe frequency and duration are determined, and further strobe occurrences are edited. Editing detection edits out a sensing time window by the infrared sensor. When the strobe stops, editing is eliminated, but if the strobe restarts, then editing is resumed.