Jul 8, 2025

US12352884 - Outdoor wireless gunshot locating system for securing sited assets

Disclosed herein are wireless networks of gunshot detector arrays providing the firing location and trajectory of a gunshot, while being tolerant of clock drift among the network. Individual gunshot detectors may be battery-powered employing one or more microphones. Detectors may time-synchronize infrequently to conserve power. Detectors may communicate wirelessly to a central device that evaluates gunshot candidates, associates those candidates between detectors to individual gunshot events, and performs calculations to arrive at a solution for a gunshot direction and/or origin. Combinations of contemporaneous gunshot candidates may be reviewed for a best positional solution. The location of gunshot events may be displayed on an overhead image or map, to persons providing remedial actions, optionally with trajectories and potential zones of impact and damaged assets.

Assignee: EAGL TECHNOLOGY, INC.
Inventors: Boaz Raz, Clay Davidson, Everett Robinson
Filing date: 2023-09-21

The patent describes a wireless gunshot locating system that utilizes an array of battery-powered sensors to detect gunfire and communicate the location and trajectory of gunshots to a central device. This system is designed to monitor areas with valuable assets, providing real-time information on gunshot events to facilitate rapid response and remedial actions.

Claim 1

A system for monitoring an area containing sited assets and alerting to the presence and location of gunfire, said system comprising: an arrayed network comprising at least two sensors, each of said sensors comprising a microphone, a microcontroller comprising non-volatile memory, a battery, a wireless transceiver and an antenna; a central device comprising a wireless transceiver and an antenna configured for communication with said sensors, said central device further comprising a microprocessor functional to access non-volatile memory, said central device further comprising a communication port operable to supply gunshot location information to a destination; an arrayed network comprising at least two sensors, each of said sensors comprising a microphone, a microcontroller comprising non-volatile memory, a battery, a wireless transceiver and an antenna; a central device comprising a wireless transceiver and an antenna configured for communication with said sensors, said central device further comprising a microprocessor functional to access non-volatile memory, said central device further comprising a communication port operable to supply gunshot location information to a destination; wherein each of said sensors is operable to: (a) monitor the audio energy in its vicinity, (b) take repeated samples from said microphone and compute at least one energy value, and (c) wirelessly transmit a gunshot candidate to said central device comprising the computed energy values; (a) monitor the audio energy in its vicinity, (b) take repeated samples from said microphone and compute at least one energy value, and (c) wirelessly transmit a gunshot candidate to said central device comprising the computed energy values; further wherein said central device is operable to: (d) receive gunshot candidates each comprising at least one energy value, (e) correlate gunshot candidates arriving from both sensors to single potential gunshot events, (f) derive a ratio from a comparison of the energy values within correlated gunshot candidates, (g) from derived ratios of energy values, calculate potential locations of a gunshot event, and (h) communicate gunshot location information to a destination, over said communication port; (d) receive gunshot candidates each comprising at least one energy value, (e) correlate gunshot candidates arriving from both sensors to single potential gunshot events, (f) derive a ratio from a comparison of the energy values within correlated gunshot candidates, (g) from derived ratios of energy values, calculate potential locations of a gunshot event, and (h) communicate gunshot location information to a destination, over said communication port; wherein said central device is located within wireless communication range of each of said sensors.

Google Patents

https://patents.google.com/patent/US12352884

USPTO PDF

https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/12352884