HIGHLY SENSITIVE SELF-POWERED PRESSURE SENSOR AND THE USE OF THE SAME

    公开(公告)号:US20240364237A1

    公开(公告)日:2024-10-31

    申请号:US18475117

    申请日:2023-09-26

    摘要: Provided is a self-powered pressure sensor which may show excellent pressure sensitivity by significantly improving transfer efficiency of charges generated by triboelectrification, the sensor including: a first electrode; a first triboelectrification unit positioned on the first electrode; a second triboelectrification unit including a pattern on which a microstructure is repeatedly positioned, the microstructure being reversibly in contact with or separated from the first triboelectrification unit by a physical external force, and having at least one surface in contact with the first triboelectrification unit to induce a change in a contact area; and a second electrode positioned inside the second triboelectrification unit and conformally positioned on a surface of the microstructure, wherein the first electrode and the second electrode are geometrically asymmetric to each other.

    Electrical power system for a resource extraction system

    公开(公告)号:US12132422B2

    公开(公告)日:2024-10-29

    申请号:US18255638

    申请日:2021-12-02

    IPC分类号: H02N99/00 H02J7/00

    CPC分类号: H02N99/00 H02J7/0013

    摘要: An electrical power system for a resource extraction system includes a thermoelectric generator assembly configured to couple to a wall of a fluid containment structure. A portion of the thermoelectric generator assembly is configured to be disposed within an opening in the wall that extends through the wall to a cavity within the fluid containment structure. In addition, the thermoelectric generator assembly includes a thermoelectric generator configured to be in thermal communication with a fluid within the opening and with an environment external to the fluid containment structure. The thermoelectric generator is configured to generate electrical power in response to a temperature differential between the fluid within the opening and the environment.

    DOWNHOLE POWER AND COMMUNICATIONS SYSTEM(S) AND METHOD(S) OF USING SAME

    公开(公告)号:US20240344429A1

    公开(公告)日:2024-10-17

    申请号:US18756784

    申请日:2024-06-27

    申请人: Bosko GAJIC

    发明人: Bosko GAJIC

    IPC分类号: E21B41/00 E21B47/13 H02N11/00

    摘要: Apparatus, method(s), and system(s) according to which electric power is generated in one or more coils by rotating a magnetic field generated by one or more permanent magnets. The one or more coils are connected to a collar. The collar is positioned downhole in an oil and gas wellbore. The one or more permanent magnets are connected to a rotor positioned within an internal passageway of the collar. A fluid is communicated along the internal passageway of the collar. The rotor, and thus the magnetic field generated by the one or more permanent magnets, are rotated using the fluid communicated along the internal passage.

    High-power electrostatic machines

    公开(公告)号:US12119760B1

    公开(公告)日:2024-10-15

    申请号:US17503300

    申请日:2021-10-16

    IPC分类号: G01M7/02 H02N1/00 H02P31/00

    CPC分类号: H02N1/002 H02P31/00

    摘要: A control circuit for an electrostatic machine includes a current source or sink, an inductor, a switching network coupled between the current source or sink and the electrostatic machine, and between the inductor and the electrostatic machine. A controller is configured to automatically cause the switching network to connect the current source or sink to the electrostatic machine each half-cycle of a periodically alternating polarity. At each polarity alternation, the electrostatic machine is isolated from the current source or sink for a first period of time. At each polarity alternation, the inductor is connected to the electrostatic machine for a second period of time while the electrostatic machine is isolated from the current source or sink, and then disconnect the inductor from the electrostatic machine.

    INTEGRATED BROADBAND ENERGY COLLECTING AND SENSING DEVICE FOR ROD-CABLE STRUCTURE

    公开(公告)号:US20240337556A1

    公开(公告)日:2024-10-10

    申请号:US18630978

    申请日:2024-04-09

    IPC分类号: G01M5/00 H02N2/18

    摘要: The invention discloses an integrated broadband energy collecting and sensing device for a rod-cable structure, belonging to a piezoelectric vibration energy collecting and sensing field, which solves a problem that an existing piezoelectric energy harvester does not fully collect environmental multi-directional vibration energy. The device comprises an inner layer sleeve, an outer layer sleeve, a first piezoelectric thin film sensor, a self-powered module and a control communication module. The self-powered module comprises one or more vibrator groups. Each vibrator group comprises a plurality of piezoelectric vibrators arranged in sequence along a circumferential direction of the inner layer sleeve. The vibrator group collects vibration energy in any direction in a cross section of the sleeve. An inner surface of the outer layer sleeve is provided with a plurality of amplitude limiting blocks for protecting the piezoelectric vibrator during a severe vibration.

    Self-powered sensing method and sensing device for spheroidal robot

    公开(公告)号:US12113459B2

    公开(公告)日:2024-10-08

    申请号:US17778834

    申请日:2021-07-08

    摘要: The present application discloses a self-powered sensing method and sensing device for spheroidal robot, which belongs to the technical field of robot attitude sensing. The design feature is structure of the spheroidal robot, comprises: a spheroidal object (1) and 26 electrode groups (2); the spheroidal object (1) includes 18 regular octagonal surfaces, 8 regular hexagonal surfaces and 24 quadrilateral surfaces; the electrode group (2) is arranged on each regular octagonal surface and each regular hexagonal surface; the electrode group (2) includes a first outer layer semicircular ring electrode (2-1), a second outer layer semicircular ring electrode (2-2) and an inner ring electrode (2-3). The present invention aims to provide a self-powered sensing method and sensing device for spheroidal robot to sense the posture of the spheroidal robot.