OCEAN CURRENT DETECTION DEVICE AND METHOD BASED ON DOUBLE-HELIX AND DOUBLE-CORE VIBRATION FIBER-OPTIC CABLE

    公开(公告)号:US20240353441A1

    公开(公告)日:2024-10-24

    申请号:US18349384

    申请日:2023-07-10

    CPC classification number: G01P5/26 G01P13/02

    Abstract: An ocean current detection device and method based on double-helix and double-core vibration fiber-optic cable, comprises a double-core fiber-optic cable and a φ-OTDR system; the double-core fiber-optic cable comprises a first and a second optical fiber core, provided symmetrically in the double helix structure. The terminate ends of the first and the second optical fiber core are connected, and the start end of the first or the second optical fiber core is connected with the φ-OTDR system. When measuring the ocean current characteristics in the target sea area, the double-core fiber-optic cable is provided underwater to generate vortex-induced vibration. The φ-OTDR system is provided for emitting laser towards the cable, receiving returned double-core vibration signals, extracting vibration characteristics from the double-core vibration signals to determine ocean current characteristics, including ocean current flow velocity and direction, to improve the detection accuracy.

    FLUID FLOW SENSOR
    2.
    发明公开
    FLUID FLOW SENSOR 审中-公开

    公开(公告)号:US20240159602A1

    公开(公告)日:2024-05-16

    申请号:US18055548

    申请日:2022-11-15

    Applicant: FLUSSO LIMITED

    CPC classification number: G01K13/026 G01K7/02 G01K7/16 G01P5/10 G01P13/02

    Abstract: A sensor for sensing direction of fluid-flow, the sensor comprising: a heating element; a first active temperature sensing element; and a processor; wherein the processor is configured to: receive a first signal corresponding to a first sensed temperature from the first active temperature sensing element; and determine a direction of fluid-flow based on a difference between the first sensed temperature and a threshold value. A method for sensing direction of fluid-flow and a method for manufacturing a sensor are also described.

    HANDS-FREE ATTACHABLE WIND DETECTION DEVICE
    5.
    发明申请

    公开(公告)号:US20190033339A1

    公开(公告)日:2019-01-31

    申请号:US16139822

    申请日:2018-09-24

    Applicant: John Pahrmann

    Inventor: John Pahrmann

    Abstract: A wind detection device of a generally bisected cylindrical-type shape with a flat face at the bisection, for attachment to other devices such as a hunting bow, having opaque or translucent walls formed of an impermeable material such as plastic where one end narrows down to an opening for a lid to attach to and seal device; and where lid narrows down further to another cylindrical-type shape with another, smaller opening for contents of device to exit through.

    Wireless immersible anemometer for sailboats

    公开(公告)号:US09927454B2

    公开(公告)日:2018-03-27

    申请号:US14898914

    申请日:2014-05-09

    Applicant: Craig Summers

    Inventor: Craig Summers

    Abstract: A machine is disclosed for wind sensing on sailboats. Wind is important for sailing, but sailboats lean away from the wind when under sail. Vertical wind angles reduce the accuracy of existing anemometers. The cup blades disclosed here do not lose rotation speed when heeling over. Since it is now easy to have a sophisticated chartplotter display on a mobile device in waterproof case even on small boats, this waterproof wind sensor is a wireless “appcessory” that can talk to smartphones, tablets, computers, e-readers and marine electronics. The circuit board is encapsulated and is itself the wind direction arrow. A fluxgate compass on the circuit board provides wind direction. The apparatus is solar-powered, so there is no wiring to install or chafe. This allows a further inventive step for raising the anemometer using the mast track without needing to climb up or lower the mast.

    Air movement visualization device

    公开(公告)号:USD812706S1

    公开(公告)日:2018-03-13

    申请号:US29596470

    申请日:2017-03-08

    CPC classification number: G01P13/0093 A01M31/00 A01M31/008 F22B1/284 G01P13/02

    Abstract: A portable device for checking wind direction discharges a visible, and optionally scented, vapor stream into the atmosphere in a well-defined reference direction. In some embodiments, the device includes a power source, a vessel having an internal plenum chamber storing a volume of air, a reservoir containing a vaporizable agent, a vaporizing element associated with the vaporizable agent, and a pressure switch. The vessel is deformable to generate an airflow that operates the pressure switch to temporarily connect the power source to the vaporizing element, thereby energizing the vaporizing element to generate vapor. The airflow also carries the vapor into the atmosphere as a visible vapor stream flowing in the reference direction. The reservoir and vaporizing element may be carried in a cartridge removably mounted on the device. Other embodiments operate similarly, but use alternative means for generating gaseous flow to operate the switch and/or carry vapor into the atmosphere.

    BOLOMETER FLUID FLOW AND TEMPERATURE SENSOR

    公开(公告)号:US20180066994A1

    公开(公告)日:2018-03-08

    申请号:US15259102

    申请日:2016-09-08

    Abstract: The sensor comprises a reference bolometer and a plurality of sensing bolometers. Each sensing bolometer is arranged adjacent to the reference bolometer. Each bolometer comprises (i) a substrate, (ii) a cap structure connected to the substrate, the cap structure configured to define a cavity between an inner surface of the cap structure and a first surface of the substrate, (iii) an absorber connected the substrate and arranged within the cavity, the absorber configured to absorb infrared radiation within the cavity, and (iv) a readout circuit connected to the absorber and configured to provide a signal that indicates an amount of infrared radiation absorbed by the absorber. The cap structure of the reference bolometer blocks infrared radiation from entering the cavity from outside the cap structure. The cap structure of each sensing bolometers allows infrared radiation to enter the cavity from outside the cap structure.

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