Asset tracker, method of tracking an asset and security server for locating the asset

    公开(公告)号:US12130372B2

    公开(公告)日:2024-10-29

    申请号:US17763630

    申请日:2020-09-24

    申请人: EXACTTRAK LIMITED

    IPC分类号: G01S5/02 G01P13/00

    摘要: A tracking device (150) for tracking an asset (110) at a facility is described herein. The tracking device comprises a communication interface (120) configured to communicate with at least one beacon (101-1, 101-2, 101-n) in proximity to the tracking device and an altitude sensor (125). The tracking device is configured to receive, via the communication interface, at least one signal from the at least one beacon, receive, via the altitude sensor, altitude information. The tracking device is configured to transmit, for use in tracking the asset at the facility, information based on the at least one signal and the altitude information.

    Low power gunshot detection implementation

    公开(公告)号:US12094485B1

    公开(公告)日:2024-09-17

    申请号:US18201205

    申请日:2023-05-24

    IPC分类号: G10L25/51 G01P13/00 G01V1/00

    CPC分类号: G10L25/51 G01P13/00 G01V1/001

    摘要: 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.

    Sensor device
    8.
    发明授权

    公开(公告)号:US12044575B2

    公开(公告)日:2024-07-23

    申请号:US17916611

    申请日:2021-03-29

    摘要: The present invention is related to an application of a Single Pixel Thermopile (SPT). The invention provides a sensor device comprising a Single Pixel Thermopile and a controller, wherein the Single Pixel Thermopile is configured to monitor a detection region and to measure over time a temperature signal of said detection region; wherein the detection region is bounded by a surface and the Single Pixel Thermopile is oriented at an angle of at least 20 degrees normal to the surface; wherein a projection of the detection region onto the surface renders an elongated detection area with a length axis and a width axis; wherein the controller is configured to: obtain the temperature signal of the detection region; determine a movement characteristic of a person moving across said surface by detecting a pattern in the temperature signal of the detection region; output an output signal configured to control an electrical device upon determining the movement characteristic.