公开(公告)号：US20210301466A1

公开(公告)日：2021-09-30

申请号：US17211974

申请日：2021-03-25

Applicant: VALMET AUTOMATION OY

Inventor： Kimmo MEHTOMAA ,  Kari ERKKILÄ ,  Juha-Matti HEINONEN ,  Sami KÄHKÖLÄ ,  Jukka ÖSTERHOLM

IPC: D21G3/00 ,  D21G9/00 ,  G01H17/00 ,  G01L1/10

Abstract: A monitoring apparatus for a doctoring comprises a vibration sensor which is individual and is attached at a discrete location of a doctor blade arrangement, the at least one vibration sensor converting a mechanical vibration of the doctor blade arrangement to an electrical signal, the mechanical vibration being caused by the doctor blade in response to a scraping operation of a rotating roll which is in contact with a moving web. A data processing unit receives the electrical signal carrying information on the vibration, compares said vibration with a reference of at least one previous measurement of a same grade of the web, and start one or more preventive actions in order to avoid a drop-through in the case said vibration exceeds at least one boundary of the reference.

公开(公告)号：US10852277B2

公开(公告)日：2020-12-01

申请号：US15302836

申请日：2015-04-09

Applicant: Etegent Technologies, Ltd.

Inventor： Oleg Lobkis ,  Richard A. Roth ,  Christopher G. Larsen ,  Stuart J. Shelley

IPC: G01N29/32 ,  G01N29/24 ,  G01L1/10 ,  G01N29/07 ,  G01N29/12 ,  G01L11/06 ,  G01H11/00 ,  F01D17/08 ,  F01D17/02 ,  G01P15/097

Abstract: An environmental condition may be measured with a sensor (10) including a wire (20) having an ultrasonic signal transmission characteristic that varies in response to the environmental condition by sensing ultrasonic energy propagated through the wire using multiple types of propagation, and separating an effect of temperature on the wire from an effect of strain on the wire using the sensed ultrasonic energy propagated through the wire using the multiple types of propagation. A positive feedback loop may be used to excite the wire such that strain in the wire is based upon a sensed resonant frequency, while a square wave with a controlled duty cycle may be used to excite the wire at multiple excitation frequencies. A phase matched cone (200, 210) may be used to couple ultrasonic energy between a waveguide wire (202, 212) and a transducer (204, 214).

公开(公告)号：US20200370323A1

公开(公告)日：2020-11-26

申请号：US16629189

申请日：2019-02-14

Applicant: SOUTHERN CALIFORNIA EDISON COMPANY

Inventor： Bryan Pham ,  James Palma ,  Viet Quoc Tran ,  Vibhu Kaushik

IPC: E04H9/02 ,  E04H12/24 ,  E04H12/20 ,  H02G7/05 ,  G01P15/18 ,  G01R19/145 ,  G01K1/14 ,  G01L1/10 ,  G01P15/08 ,  G01L5/00 ,  G01K11/26 ,  G08B21/18

Abstract: An energy transmission system comprising a pole, at least one wire, a sensing system coupled to the pole for monitoring pole temperature, dynamic pole loading, external impact on the pole, vibration of the pole, and wires that are downed, at least one line sensor coupled to the wire and at least one powered data integrator. The sensing system comprises at least one dynamic pole loading sensor and a three-dimensional accelerometer. The dynamic pole loading sensor can be coupled to the lower portion of the pole above ground level but not more than 10 feet above ground level. Optionally there are two dynamic pole loading sensors, the first sensor having a longitudinal axis parallel to a longitudinal axis of the pole, and the second sensor having a longitudinal axis perpendicular to the longitudinal axis of the pole.

公开(公告)号：US10801267B1

公开(公告)日：2020-10-13

申请号：US16004108

申请日：2018-06-08

Applicant: Intelligent Fiber Optic Systems, Inc.

Inventor： Richard J. Black ,  Behzad Moslehi

IPC: E21B10/48 ,  G01L1/24 ,  E21B41/00 ,  G01L1/10 ,  G01L5/12 ,  E21B10/44

Abstract: A drill has a stationary drive mechanism coupled to a rotating drill, the rotating drill having a serpentine optical fiber positioned on an inner shell having a serpentine groove with fiber Bragg gratings (FBGs) coupled to the inner shell and arranged parallel to the central axis of rotation for measurement of axial forces and also positioned circumferentially for measurement of drill torque. The FBGs are arranged on a single optical fiber and coupled to a broadband optical source such that reflected optical energy is directed to an interrogator for estimate of strain at each FBG. The FBG responses may also be examined dynamically to estimate material hardness during a drilling operation.

公开(公告)号：US10704972B2

公开(公告)日：2020-07-07

申请号：US16074927

申请日：2016-02-23

Applicant: Brink Towing Systems B.V.

Inventor： Teunis Lassche

IPC: G01L5/13 ,  B60D1/06 ,  B60D1/48 ,  B60D1/62 ,  B60D1/58 ,  G01L1/10 ,  G01L1/25 ,  G01L5/00

Abstract: A method for measuring the applied load on a towing hook/or a tow bar accessory of a towing hook arrangement for a vehicle, and a towing hook arrangement for a vehicle. The towing hook arrangement comprises a towing hook and/or a tow bar accessory arranged on a tow bar, the towing hook arrangement also comprises a sensor arrangement having at least one actuator and at least one sensor, the sensor arrangement is adapted to detect an imparted vibration on the tow bar and use the detected imparted vibration to determine the applied load on the towing hook and/or the tow bar accessory.

公开(公告)号：US20200149979A1

公开(公告)日：2020-05-14

申请号：US16604431

申请日：2018-04-10

Applicant: Etegent Technologies LTD.

Inventor： Richard A. Roth, II ,  Stuart J. Shelley ,  Kevin Sigmund ,  Oleg Lobkis

IPC: G01K11/24 ,  G01L11/06 ,  G01N29/07 ,  G01L1/10 ,  G10K11/24 ,  G01N29/44 ,  H01P3/10

Abstract: A sensor with a mechanical waveguide maybe characterized using test ultrasonic signals to generate a baseline signature, and the baseline signature may later be used to detect faults in the sensor.

公开(公告)号：US10595400B1

公开(公告)日：2020-03-17

申请号：US15281707

申请日：2016-09-30

Applicant: Square, Inc.

Inventor： Mani Razaghi ,  Jesse Hill

IPC: G01R27/08 ,  H05K1/02 ,  H05K1/18 ,  H05K7/14 ,  H05K5/02 ,  G01N27/20 ,  G01N17/00 ,  G01N17/02 ,  G01L1/10 ,  G01L1/20 ,  G01R27/00 ,  G01L1/22

Abstract: A payment reader includes a tamper detection system having a first sensor element disposed on a circuit board of the tamper detection circuit; a second sensor element disposed within an interior surface of a housing of the tamper detection circuit; and a guard ring disposed on the circuit board of the tamper detection circuit configured to form an electrical connection with the first sensor element in response to injection of conductive fluid thereby indicating tampering with the tamper detection circuit, wherein the guard ring is configured to be on a plane different from the first sensor element to prevent unintentional activation of the tamper detection circuit.

公开(公告)号：US20190301950A1

公开(公告)日：2019-10-03

申请号：US16307848

申请日：2017-06-02

Applicant: NATIONAL UNIVERSITY CORPORATION NAGOYA UNIVERSITY

Inventor： Fumihito ARAI ,  Yuichi MUROZAKI ,  Shinya SAKUMA

IPC: G01L1/16 ,  H03H9/215 ,  G01L1/10

Abstract: In a load sensor detecting a magnitude of an external load applied in a direction parallel to a sheet shape of a sheet-shaped quartz crystal resonator, the load sensor comprising: a quartz crystal resonator layer including the sheet-shaped quartz crystal resonator and a pair of electrode portions on a pair of surfaces opposite to each other in a plate thickness direction of the quartz crystal resonator; and a pair of holding layers disposed to sandwich both sides of the sheet shape of the quartz crystal resonator layer and causing a displacement in substantially the same amount as the quartz crystal resonator layer when the external load is applied to the quartz crystal resonator layer, the holding layers and the quartz crystal resonator layer are made of materials having substantially equivalent rates of thermal expansion.

公开(公告)号：US20190078914A1

公开(公告)日：2019-03-14

申请号：US16129355

申请日：2018-09-12

Applicant: Silicon Microstructures, Inc.

Inventor： Holger Doering ,  Omar Abed

IPC: G01F1/40 ,  G01F1/36 ,  G01L1/10

Abstract: Pressure sensors that may be used in flowrate monitoring or measuring systems, where the pressure sensors may enable simple, low-cost designs that are readily implemented. One example may provide a pressure sensor having a built-in flow path with a dimensional variation. Pressures of a fluid on each side of the dimensional variation may be compared to each other. The measured differential pressure may then be converted to a flowrate through the flow path.

公开(公告)号：US20190018403A1

公开(公告)日：2019-01-17

申请号：US16076804

申请日：2017-01-19

Applicant: HITACHI, LTD.

Inventor： Yosuke UEKI

IPC: G05B23/02 ,  F03D17/00 ,  G01L1/10

Abstract: To provide high-accuracy assessment of a remaining life of a composite material structure. A remaining life assessment system 5 for composite material structure includes: a load history assessment part 7 that calculates a history of load on a composite material based on output from a first sensor attached to the composite material; a state quantity assessment part 10 that calculates a state quantity of the composite material based on output from the first sensor or a second sensor; a state quantity change database 13 that holds previously recorded relation between the load history and the state quantity of the composite material; and a comparative assessment part 12 that compares the calculated load history and state quantity with the load history and state quantity stored in the state quantity change database 13.