公开(公告)号：US11448660B2

公开(公告)日：2022-09-20

申请号：US16911533

申请日：2020-06-25

Applicant: Jaquet Technology Group AG

Inventor： Jonathan A. A. Tigelaar ,  Andreas Tuor ,  Alexandru Istrate ,  Loïc Libis

IPC: G01P3/48 ,  G01P3/49 ,  F02B37/00

Abstract: A ferrite core coil device as a sensing element for a sensor device determining a rotational speed of a metallic rotatable object includes a coil having a first sector and a second sector and a ferrite core holding the coil. The ferrite core has a shape of a disk lacking a disk sector and defined by a contour of the disk and a chord of the disk. The chord forms a bending edge of the ferrite core. The first sector of the coil is not arranged on a bed of the ferrite core and the second sector of the coil is arranged on the bed. The first sector is bent around the bending edge at a bending angle with respect to the second sector.

公开(公告)号：US10591506B2

公开(公告)日：2020-03-17

申请号：US14418554

申请日：2013-07-29

Applicant: YANMAR CO., LTD. ,  TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Takeshi Takahashi ,  Hidenori Nomura ,  Mitsuhiro Hibino ,  Kazuhiro Yamada ,  Toshiro Itatsu

IPC: G01P3/49 ,  F01D17/06 ,  F01D21/02 ,  G01P3/481 ,  F04D27/00 ,  F02B39/16 ,  F01D21/04 ,  F02B37/12

Abstract: The purpose of the present invention is to provide a rotation speed detection device which achieves improved detection accuracy regardless of a compressor and the operating state of the compressor, and enables the prevention of the breakage of a detection unit. A rotation speed detection device for a compressor, wherein a detection unit for detecting full blades and splitter blades that are blades approaching a compressor casing of the compressor in response to a change in the inductance of a magnetic field is provided. The detection unit is provided in an overlap region in which the full blades and the splitter blades that are all blades can be detected and the exposure pressure is in the range of a gauge pressure of one atmosphere or less.

公开(公告)号：US09921081B2

公开(公告)日：2018-03-20

申请号：US14649141

申请日：2013-10-16

Applicant: Robert Bosch GmbH

Inventor： Klaus Lerchenmueller

IPC: G01D5/20 ,  F02D41/22 ,  F02B39/16 ,  G01P3/488 ,  G01P3/49 ,  G01P21/02 ,  G01M13/00 ,  F04D27/00 ,  F02C6/12 ,  F01D21/00 ,  F02D41/00

CPC classification number: G01D5/20 ,  F01D21/003 ,  F02B39/16 ,  F02C6/12 ,  F02D41/0007 ,  F02D41/22 ,  F04D27/001 ,  F05D2220/40 ,  F05D2260/80 ,  G01M13/00 ,  G01P3/488 ,  G01P3/49 ,  G01P21/02 ,  Y02T10/40

Abstract: In a method for monitoring a rotation of a compressor wheel of an exhaust-gas turbocharger, which compressor wheel has on the peripheral side a number n of blades, an inductive sensor is provided for detecting the speed or rotational frequency, which sensor produces at least one output signal as a function of eddy currents generated as the blades pass by, and the rotational speed of the compressor wheel is inferred from a fundamental frequency of the output signal. In addition, information about a fault of the compressor wheel is derived from at least one modulation of the output signal, e.g., amplitude modulation, and an imbalance of the compressor wheel is detected.

公开(公告)号：US09772344B1

公开(公告)日：2017-09-26

申请号：US13771920

申请日：2013-02-20

Applicant: The United States of America as represented by the Administrator of the National Aeronautics and Space Administration

Inventor： Lawrence Greer

IPC: G11B19/28 ,  G01P3/49

CPC classification number: G01P3/36

Abstract: An apparatus and a computer-implemented method for generating pulses synchronized to a rising edge of a tachometer signal from rotating machinery are disclosed. For example, in one embodiment, a pulse state machine may be configured to generate a plurality of pulses, and a period state machine may be configured to determine a period for each of the plurality of pulses.

公开(公告)号：US09176024B2

公开(公告)日：2015-11-03

申请号：US14061650

申请日：2013-10-23

Applicant: General Electric Company

Inventor： Raymond Verle Jensen ,  Charles Terrance Hatch ,  Sean Kelly Summers

IPC: G01M15/14 ,  G01L3/12 ,  G01L3/10 ,  G01L3/14 ,  G01M1/16 ,  G01P3/49

CPC classification number: G01M15/14 ,  F01D17/02 ,  F01D17/20 ,  F05D2220/31 ,  F05D2220/72 ,  G01H1/003 ,  G01H3/00 ,  G01H11/00 ,  G01L3/101 ,  G01L3/109 ,  G01L3/12 ,  G01L3/1435 ,  G01M1/16 ,  G01P3/49 ,  Y02T50/671

Abstract: A system includes a first unitary measurement strip configured to be secured about a rotational component at a first axial location. The first unitary measurement strip includes a first set of one or more windows, each window of the first set of one or more windows is configured to correspond to a first respective tangential location of the rotational component at the first axial location, and each window of the first set of one or more windows is configured to be detectable via a first sensor.

Abstract translation: 系统包括第一单元测量条，其被配置为在第一轴向位置处围绕旋转部件固定。 第一单一测量条带包括第一组一个或多个窗口，一个或多个窗口的第一组的每个窗口被配置为对应于第一轴向位置处的旋转部件的第一相应切向位置，并且每个窗口 第一组一个或多个窗口被配置成可以通过第一传感器检测。

公开(公告)号：US20080074099A1

公开(公告)日：2008-03-27

申请号：US11948384

申请日：2007-11-30

Applicant: Norifumi KAWASAKI ,  Hideo Kita

Inventor： Norifumi KAWASAKI ,  Hideo Kita

IPC: G01P3/49

CPC classification number: G01P3/49

Abstract: A wheel speed detection system including a rotator, a sensor head, a detector, a pulse converter, a speed calculator and a threshold shifter. Plural concave and convex portions are formed on a periphery of the rotator rotating together with a wheel. The sensor head includes a coil to generate an alternate current magnetic field. The detector excites the coil to generate an eddy current on the concave and convex portions, and outputs alternate current detection signals corresponding to changes in the eddy current generated with rotation of the rotator. The pulse converter converts the alternate current detection signals into pulse signals according to preset threshold levels. The speed calculator calculates rotational speed of the wheel based on the pulse signals. The threshold shifter shifts the threshold levels corresponding to a difference between a default average and an average of the alternate current detection signals actually outputted from the detector.

Abstract translation: 一种车轮速度检测系统，包括旋转器，传感器头，检测器，脉冲转换器，速度计算器和阈值移位器。 在与车轮一起旋转的旋转体的周边上形成有多个凹凸部。 传感器头包括用于产生交流磁场的线圈。 检测器激励线圈在凹凸部分产生涡流，并输出对应于旋转体旋转产生的涡流变化的交流检测信号。 脉冲转换器根据预设的阈值电平将交流检测信号转换成脉冲信号。 速度计算器基于脉冲信号计算车轮的转速。 阈值移位器将与从检测器实际输出的交流检测信号的默认平均值和平均值之间的差相对应的阈值电平移位。

公开(公告)号：US5365663A

公开(公告)日：1994-11-22

申请号：US874949

申请日：1992-04-28

Applicant: John F. Demartini

Inventor： John F. Demartini

IPC: F01D25/00 ,  G01H1/00 ,  G01P3/49 ,  G01P15/11 ,  B23P15/00

CPC classification number: G01P3/49 ,  G01H1/006 ,  G01P15/11 ,  Y10T29/4932 ,  Y10T29/49321

Abstract: Method of attaching a target for use in a system for monitoring the vibration of a plurality of shrouded turbine blades to a shroud segment. The target includes a shim plated with a highly conductive material for inducing variations in eddy currents generated by stationary sensors, as part of a system for monitoring blade vibrations. The target is spot welded to the shroud segment of the turbine blades at the turbine site using portable welding equipment, providing effective and low cost installation.

Abstract translation: 将用于将多个被覆盖的涡轮叶片的振动监视到护罩段的系统中的目标附接的方法。 目标包括镀有高导电材料的垫片，用于引起由固定传感器产生的涡流的变化，作为用于监测叶片振动的系统的一部分。 目标是使用便携式焊接设备在涡轮机位置点焊到涡轮机叶片的护罩段，从而提供有效和低成本的安装。

公开(公告)号：US4751459A

公开(公告)日：1988-06-14

申请号：US909762

申请日：1986-09-18

Applicant: Joseph J. Stupak, Jr.

Inventor： Joseph J. Stupak, Jr.

IPC: G01P3/49 ,  G01P15/00 ,  G01P15/105 ,  G01P3/46 ,  G01B7/14 ,  G01P3/52

CPC classification number: G01P3/49 ,  G01P15/003

Abstract: A tachometer or accelerometer features a nonmagnetic, electrically-conductive, moving member whose velocity or rate of change of velocity is to be measured. A magnetic field is generated in a direction generally perpendicular to the direction of motion, creating eddy currents in the moving member which, in turn, create an eddy current magnetic field. The flux density of the eddy current field is measured by a Hall effect sensor to produce a signal representative of velocity or, alternatively, the rate of change of flux density of the eddy current field is measured by a coil producing a signal representative of the rate of change of velocity. A separate magnetic circuit for the Hall effect sensor or coil sensor, as the case may be, is provided so as to maximize the strength of the eddy current field by concentrating the sensed eddy current flux and thereby maximizing the device's sensitivity and accuracy while minimizing its susceptibility to error through interference.

Abstract translation: 转速计或加速度计具有非磁性，导电的移动部件，其速度或速度变化速率要测量。 在大致垂直于运动方向的方向上产生磁场，从而在移动部件中产生涡流，从而产生涡流磁场。 通过霍尔效应传感器测量涡流场的磁通密度，以产生代表速度的信号，或者涡旋电流场的磁通密度变化率由产生代表速率的信号的线圈测量 的速度变化。 提供用于霍尔效应传感器或线圈传感器的单独的磁路（视情况而定），以便通过集中所感测的涡流通量来最大化涡流场的强度，从而使器件的灵敏度和精度最大化，同时使其最小化 通过干扰对误差的敏感性。

公开(公告)号：US3999441A

公开(公告)日：1976-12-28

申请号：US587702

申请日：1975-06-17

Applicant: Boris Gonzales

Inventor： Boris Gonzales

IPC: B60K31/18 ,  G01P1/11 ,  G01P3/495 ,  G01P3/49 ,  G01P3/50

CPC classification number: G01P3/495 ,  B60K31/185 ,  G01P1/11

Abstract: A drum angularly entrained via a magnetic coupling by a shaft of a vehicular transmission, against a spring force, is linked via another magnetic coupling with a coaxial follower member carrying a printed circuit whose conductors are engageable by respective contact brushes normally spaced therefrom, the brushes acting as brakes upon being moved into contact with the conductors so as to arrest the follower member. An alarm device, which may emit a warning sound and/or carry out a control function, responds to a photoelectric sensor including a light emitter and a light receiver on the follower member coacting with a shutter on the drum, the sensor actuating the alarm device upon a relative displacement of the follower member and the drum beyond a selected relative angular position. A pushbutton, serving to bring the brushes into contact with the printed-circuit conductors, simultaneously connects the alarm device to its power supply.

Abstract translation: 通过一个通过车辆传动装置的轴通过磁耦合而与弹簧力成角度地夹带的鼓通过另一个磁耦合与携带印刷电路的同轴从动件连接，该导体可以通过与其间隔开的各个接触刷接合，刷子 在与导体接触时作为制动器，以阻止从动件。 可以发出警告声音和/或执行控制功能的报警装置响应于包括发光器和光接收器的光电传感器，该光电传感器和光接收器与从动构件共同作用于鼓上的快门，传感器致动报警装置 在所述从动构件和所述滚筒相对于所选择的相对角度位置之后相对移动。 用于使电刷与印刷电路导体接触的按钮同时将报警装置连接到其电源。

公开(公告)号：US3898562A

公开(公告)日：1975-08-05

申请号：US47362774

申请日：1974-05-28

Applicant: CARRIER CORP

Inventor： MIZIKAR DAVID M ,  SCHANZENBACH GEORGE P

IPC: G01H11/02 ,  G01B5/00 ,  G01B7/14 ,  G01D5/20 ,  G01H11/00 ,  G01M99/00 ,  G01P1/00 ,  G01P1/02 ,  G01P3/481 ,  G01P3/49 ,  G01R1/06

CPC classification number: G01P1/026 ,  G01B5/0002 ,  G01B7/14 ,  G01D5/202 ,  G01H11/00 ,  G01P1/00 ,  G01P3/49

Abstract: A probe supporting structure that is externally insertable into a machine having an adjustable feature for positioning the probe element at a predetermined distance from a body to be observed and scale calibration means for checking the system in assembly.

Abstract translation: 探针支撑结构，其外部可插入到机器中，所述机器具有用于将探针元件定位在与要观察的身体预定距离的预定距离处的机器，并且用于在组装中检查系统的标尺校准装置。