-
公开(公告)号：US20240310538A1
公开(公告)日：2024-09-19
申请号：US18183671
申请日：2023-03-14
Applicant: Astro Technology Group, LLC
Inventor： David Verl Brower
Abstract: Disclosed herein are systems and methods configured to produce and monitor signals that characterize activities corresponding to intruders (e.g., persons and/or animals) traversing a boundary that at least partially defines a designated area. Such activities can characterize one or more persons traversing a boundary or attempting to traverse a barrier that defines the boundary. Sensors within a substrate that extends along the boundary can be used for producing such signals. The substrate can be soil of which ground at the boundary is comprised, a manmade material located within such soil or a material from which a barrier along the boundary is constructed. The sensors can be fiber optic sensors that extend contiguously along a length of the boundary and/or can be fiber optic sensors that are located at discrete locations along the length of the boundary. The signals can cause one or more responsive actions to be implemented.
-
公开(公告)号：US12094485B1
公开(公告)日：2024-09-17
申请号：US18201205
申请日：2023-05-24
Applicant: Shooter Detection Systems, LLC
Inventor： Richard Thomas Onofrio , Ronald A Fowler , Frank Ray Bachmann
Abstract: Techniques for low power gunshot detection are disclosed. Infrared information is collected using a gunshot sensor device. The infrared information is collected using mid-infrared band sensing to provide motion detection. Additional infrared information is buffered using the gunshot sensor device. The additional infrared information is collected using near-infrared band sensing. The buffering is enabled by the motion detection. Acoustic information is collected using the gunshot sensor device. The collecting acoustic information is enabled by the motion detection. A gunshot is detected using the gunshot sensor device. The detecting is based on the additional infrared information and the acoustic information. The detecting includes monitoring the acoustic information to identify a high-intensity gunshot sound and correlating the high-intensity gunshot sound to the infrared information that was buffered. The gunshot sensor device uses cable-free communication to a network and notifies the network of a possible gunshot occurrence.
-
3.发明公开公开(公告)号：US20240241275A1
公开(公告)日：2024-07-18
申请号：US18414419
申请日：2024-01-16
Applicant: NEC Laboratories America, Inc.
Inventor： Shaobo HAN , Yuheng CHEN , Ming-Fang HUANG , Tingfeng LI
CPC classification number: G01V1/288 , G01V1/001 , G01V1/226 , G08G1/0104
Abstract: Disclosed are machine learning (ML) based Distributed Fiber Optic Sensing (DFOS) systems, methods, and structures for Sonic Alert Pattern (SNAP) event detection performed in real time including an intelligent SNAP informatic system in conjunction with DFOS/Distributed Acoustic Sensing (DAS) and machine learning technologies that utilize SNAP vibration signals as an indicator. Without installation of additional sensors, vibration signals indicative of SNAP events are detected along a length of an existing optical fiber through DAS. Raw DFOS data is utilized—and not DFOS waterfall data—resulting in faster and more accurate information derivation as rich, time-frequency information in the raw DFOS/DAS waveform data is preserved. A deep learning module Temporal Relation Network (TRN) that accurately detects SNAP events from among chaotic signals of normal traffic is employed, making it reliable when applied to busy roads with dense traffic and vehicles of different speed.
-
公开(公告)号：US12008887B2
公开(公告)日：2024-06-11
申请号：US17686954
申请日：2022-03-04
Applicant: Carrier Corporation
Inventor： Pawel Raasz , Piotr Wolnowski
Abstract: A fire detection apparatus includes a fire detector (1) including an integrated sounding device (5) that is configured to emit a sound (7) from the fire detector (1) and that is further configured to detect reverberation of the emitted sound resulting from a cover (9) placed over the fire detector (1). The detected reverberation can be used to determine that the fire detector (1) has been covered.
-
公开(公告)号：US20240184006A1
公开(公告)日：2024-06-06
申请号：US18065192
申请日：2022-12-13
Applicant: Hifi Engineering Inc.
Inventor： Seyed Ehsan JALILIAN , Yuhong LIU
Abstract: Methods, systems, and techniques for wind detection. A first acoustic signal generated by an acoustic sensor positioned to be actuated in response to wind is measured. An average value of the first acoustic signal over a sampling duration is determined. The average value may be a median, and the sampling duration may be at least 15 minutes. If the average value of the first acoustic signal satisfies a wind detection threshold, the first acoustic signal is determined to be generated by the wind.
-
Patent Agency Ranking
公开(公告)号：US20240134076A1
公开(公告)日：2024-04-25
申请号：US18390981
申请日：2023-12-20
Applicant: EXFO Inc.
Inventor： Hongxin CHEN , Normand CYR
Abstract: There is provided a method and an apparatus of fiber optic distributed acoustic sensing (DAS) which use a simple, reliable and robust signal processing for amplitude-based DAS measurements. 1) The lack of linearity of the amplitude-based DAS measurements (due to its unpredictable variation of the transfer function along the fiber) can be improved by normalizing the amplitude vs distance using an amplitude-normalization trace obtained from either a) coherent laser OTDR measurements with laser frequency dithering or b) computing a normalization trace from the coherent OTDR/DAS traces and the un-coherent OTDR/DAS traces. 2) Instrument offset (e.g., due to low vertical sampling resolution) may further be corrected using un-coherent OTDR/DAS traces to extract an instrument system offset.
-
公开(公告)号：US20240061137A1
公开(公告)日：2024-02-22
申请号：US17890359
申请日：2022-08-18
Applicant: Network Integrity Systems, Inc.
Inventor： Cary R. Murphy , Daniel M. Goertzen , Mark K. Bridges
Abstract: A method is provided for analyzing a monitoring signal from a sensing system to determine an alarm condition, where the monitoring signal is provided as a stream of digital values which are analyzed using a frequency-based transform to generate a set of transform coefficients which are compared to a set of envelope coefficients. The sensitivity of the analysis is automatically controlled to accommodate environmental noise on the fiber by increasing the envelope coefficients to make the analysis less sensitive at each cycle by adopting the larger value from the comparison and by decaying the envelope coefficients at each cycle over time to a smaller value down to a floor value.
-
公开(公告)号：US20240019596A1
公开(公告)日：2024-01-18
申请号：US18350279
申请日：2023-07-11
Applicant: Carrier Corporation
Inventor： David Mannfeld
IPC: G01V1/00
CPC classification number: G01V1/001 , F24F2120/10
Abstract: In embodiments of the disclosure, an occupancy detector includes a processor operable to perform processor operations that include receiving audio signals from a plurality of sources; performing analysis on the audio signals; and, based at least in part on a result of the analysis performed on the audio signals, making a determination of the audio signals that resulted from an action of a person located within an indoor area-under-evaluation.
-
公开(公告)号：US20240012167A1
公开(公告)日：2024-01-11
申请号：US18329133
申请日：2023-06-05
Applicant: EXFO Inc.
Inventor： Hongxin CHEN , Michel LEBLANC , Michel LECLERC
Abstract: There is provided a method and an apparatus of fiber optic distributed acoustic sensing (DAS) which can use low-cost coherent laser as well as low-cost acquisition and processing electronics and which can still provide reliable monitoring results for optical fiber monitoring and troubleshooting applications in optical fiber telecommunication networks. Such low-cost solution is made possible by employing grouped data signal processing. Data is processed over independent groups of data to provide an independent DAS signal for each group. This allows measurements to be less sensitive to laser fluctuations and thereby reduces coherent laser technical specification requirements and allows the use of a low-cost coherent laser (thereby reducing the cost of the laser) as well as low-cost acquisition and processing electronics.
-
公开(公告)号：US20230417937A1
公开(公告)日：2023-12-28
申请号：US18461383
申请日：2023-09-05
Applicant: ULC TECHNOLOGIES, LLC
Inventor： John Jayne , Baiyang Ren , Michael Hauser , Steven McKeefrey
IPC: G01V1/00 , G01N29/24 , G01S1/74 , G01N29/265
CPC classification number: G01V1/001 , G01N29/2437 , G01N29/2481 , G01S1/74 , G01N29/265 , G01N2291/2636 , E21B7/046
Abstract: An assembly and method for detecting cross bores and the location of underground pipe system assets includes an acoustic generator placed within an interior of the sewer system and an acoustic receiver placed within proximity of the lateral(s) of the pipe system. The acoustic generator generates an acoustic signal to transmit through the interior of a sewer pipe of the sewer system. A controller detects, in response to the acoustic receiver hearing the acoustic signal, a location of the underground pipe.
-
-
-
-
-
-
-
-
-
Search Results
479
records
(took 0.018 seconds)
