公开(公告)号：US20240377428A1

公开(公告)日：2024-11-14

申请号：US18313899

申请日：2023-05-08

Applicant: Hans K. Liu

Inventor： Hans K. Liu

IPC: G01P3/52 ,  H04R29/00

Abstract: Velocity detection is the crucial step for motion feedback and control. A dynamic loudspeaker can be conceptualized as a motion conductor within magnetic field. This invention calculates the velocity of a motion conductor, uses operational amplifier to emulate the calculation and realize the velocity detection.

公开(公告)号：US10852142B2

公开(公告)日：2020-12-01

申请号：US16185768

申请日：2018-11-09

Applicant: Airmar Technology Corporation

Inventor： Didier Caute ,  Danny J. Fladung ,  Craig Smith ,  Robert M. Cullen ,  William J. Letendre ,  Eric J. Beiswenger ,  Bruno Marie

IPC: G01C21/16 ,  G01P3/52 ,  G01S15/08 ,  G01P3/488 ,  G01S15/10 ,  G01S15/86

Abstract: A multi-function sensor system comprises a dual-axis electromagnetic speed sensor and a depth transducer to enable various underwater or marine measurements to be achieved in a single unit thus reducing the space required on a vessel and the cost of having such multiple functions.

公开(公告)号：US20180245303A1

公开(公告)日：2018-08-30

申请号：US15905498

申请日：2018-02-26

Applicant: Liebherr-Werk Nenzing GmbH

Inventor： Patrick Jussel ,  Peter Loster

IPC: E02D7/10 ,  G01P15/16 ,  G01P3/52 ,  G01P3/54

CPC classification number: E02D7/10 ,  E02D7/18 ,  E02D13/06 ,  G01P3/52 ,  G01P3/54 ,  G01P15/16

Abstract: A method of recognizing obstacles on operation of a vibratory pile driver of a work machine includes monitoring an acceleration signal of the vibratory pile driver during operation of the vibratory pile operator and analyzing the acceleration signal to determine the presence of an obstacle. The acceleration signal may be monitored over a time period which is determined based on an excitation frequency of the vibratory pile driver. The analysis may include comparing negative and positive half-waves of the acceleration signal. Responsive to the analysis indicating an obstacle, a system operator may be alerted, and/or operation of the vibratory pile driver may be adjusted via controller intervention.

公开(公告)号：US20170234904A1

公开(公告)日：2017-08-17

申请号：US15504486

申请日：2015-09-22

Applicant: Cotinental Teves AG & Co. oHG

Inventor： Frank Grunwald

IPC: G01P3/46 ,  G01D5/20 ,  G01P3/52

CPC classification number: G01P3/465 ,  G01D5/204 ,  G01D5/2046 ,  G01P3/48 ,  G01P3/488 ,  G01P3/489 ,  G01P3/52 ,  G01P3/54

Abstract: A speed sensor for detecting a speed of a magnetizable object. The speed sensor (100) can be supplied with an electric alternating signal with a first frequency by an electric signal source. The speed sensor including: a primary coil for generating a magnetic alternating field with the first frequency; first and second secondary coils. The first and second secondary coils can each be magnetically coupled to the primary coil via a magnetizable object. First and second electric signals induced in the first and second secondary coils respectively by the generated magnetic alternating field; a Goertzel filter bank detects first and second amplitude values of respective spectral components of the induced first and second electric signals in the event of a second frequency which differs from the first frequency. A processor determines the speed of the magnetizable object depending on the detected first amplitude value and the detected second amplitude value.

公开(公告)号：US20060186875A1

公开(公告)日：2006-08-24

申请号：US11064580

申请日：2005-02-24

Applicant: Thaddeus Schroeder ,  Elias Taye

Inventor： Thaddeus Schroeder ,  Elias Taye

IPC: G01P3/46 ,  G01P3/52 ,  F02D1/00

CPC classification number: F02D41/009 ,  G01P3/22 ,  G01P15/11

Abstract: A removable sensor assembly for non-intrusively sensing instantaneous speed of an engine comprising a crankshaft having a respective end equipped with an externally accessible bolt, the removable sensor assembly comprising: a housing comprising a recess configured to removably receive and engage a portion of the externally accessible bolt; and a force sensing device received in the housing, the force sensing device being configured to wirelessly provide information indicative of angular motion of the crankshaft, the force sensing device comprising: at least one coil; a power supply for providing an excitation to the coil, wherein the coil provides a first signal and a second signal each corresponding to the movement of the housing, the first signal corresponding to the resistance of the coil and the second signal corresponding to the inductance of the coil; and a signal transmitter coupled to the coil to receive and transmit the first signal and the second signal.

Abstract translation: 一种用于发动机的非侵入式感测瞬时速度的可拆卸传感器组件，包括具有相应端部的曲轴，所述曲轴具有外部可接近的螺栓，所述可拆卸传感器组件包括：壳体，其包括被构造成可移除地接收和接合外部部分的凹部 可触及的螺栓; 以及受力于所述壳体的力传感装置，所述力感测装置被配置为无线地提供指示所述曲轴的角运动的信息，所述力感测装置包括：至少一个线圈; 用于向线圈提供激励的电源，其中线圈提供每个对应于壳体的运动的第一信号和第二信号，对应于线圈的电阻的第一信号和对应于线圈的电感的第二信号 线圈 以及耦合到所述线圈以接收和发送所述第一信号和所述第二信号的信号发射器。

公开(公告)号：US06866127B2

公开(公告)日：2005-03-15

申请号：US10643524

申请日：2003-08-19

Applicant: Thomas W. Nehl ,  Fang Deng

Inventor： Thomas W. Nehl ,  Fang Deng

IPC: B60G17/019 ,  B60G17/027 ,  F16F9/32 ,  F16F9/38 ,  F16F9/512 ,  F16F9/53 ,  F16F15/03 ,  G01P3/52

CPC classification number: B60G17/01933 ,  B60G2204/112 ,  B60G2400/202 ,  B60G2400/252 ,  B60G2401/172 ,  F16F9/3292 ,  F16F9/38 ,  F16F9/535 ,  F16F2230/08 ,  G01P3/52

Abstract: A piston damper assembly includes a piston damper and a relative velocity sensor. The piston damper includes a damper body, a piston rod, and a dust tube which is attached to the piston rod. The relative velocity sensor includes an axially extending first magnet supported by the dust tube, a flux collector, and a first sensor coil. The flux collector is supported by the dust tube, includes an axially-extending first prong in axially-extending contact with the first magnet, includes an axially-extending second prong, and includes a joining member connecting the first and second prongs. The first sensor coil surrounds the joining member and/or one of the first and second prongs. A piston-damper dust tube subassembly includes the dust tube and the relative velocity sensor.

Abstract translation: 活塞阻尼器组件包括活塞阻尼器和相对速度传感器。 活塞阻尼器包括阻尼体，活塞杆和附接到活塞杆的灰尘管。 相对速度传感器包括由尘埃管支撑的轴向延伸的第一磁体，磁通收集器和第一传感器线圈。 集尘器由灰尘管支撑，包括与第一磁体轴向延伸接触的轴向延伸的第一插脚，包括轴向延伸的第二插脚，并且包括连接第一和第二插脚的连接构件。 第一传感器线圈围绕连接构件和/或第一和第二插脚中的一个。 活塞阻尼器灰尘管子组件包括灰尘管和相对速度传感器。

公开(公告)号：US06016056A

公开(公告)日：2000-01-18

申请号：US4859

申请日：1998-01-09

Applicant: Mitsunori Seki

Inventor： Mitsunori Seki

IPC: G01P3/489 ,  B22D17/32 ,  B29C45/47 ,  B29C45/76 ,  B29C45/80 ,  G01B21/00 ,  G01D5/244 ,  G01P3/486 ,  G01P13/04 ,  G01P3/52 ,  G01P13/00

CPC classification number: G01D5/24404 ,  B29C45/76 ,  B29C45/80 ,  G01P3/486

Abstract: A device for detecting motion of a movable part of an injection-molding machine uses an encoder coupled to the part which outputs two square waves which are a quarter-cycle out of phase. The two waves are used to generate trigger pulses at four times either encoder waves' frequency. The direction of the phase shift, positive or negative, depends on the forward or backward direction of motion of the part, and the trigger pulses are generated in on one of two logic circuits depending on the direction of motion of the part. The quadrupling of the encoder wave frequency increases the accuracy of motion measurement. The device uses AND/OR logic to generate the two sets of trigger pulses. The trigger pulses are counted to determine the distance the part has moved. The trigger pulses are also latched, and higher-frequency clock pulses are counted during the latched period to calculate the part's speed.

Abstract translation: 用于检测注射成型机的可动部分的运动的装置使用耦合到输出相对于四分之一周期的两个方波的部分的编码器。 这两个波用于产生编码器波频率四倍的触发脉冲。 正相或负相移的方向取决于部件的正向或反向运动方向，触发脉冲根据部件的运动方向在两个逻辑电路中的一个上产生。 编码器波频率的四倍增加了运动测量的精度。 该器件使用AND / OR逻辑来产生两组触发脉冲。 计数触发脉冲以确定零件移动的距离。 触发脉冲也被锁存，并且在锁存期间对高频时钟脉冲进行计数，以计算部件的速度。

公开(公告)号：US5446376A

公开(公告)日：1995-08-29

申请号：US139675

申请日：1993-10-22

Applicant: Randy D. Porter ,  Matthew W. Pankow

Inventor： Randy D. Porter ,  Matthew W. Pankow

IPC: G01P13/04 ,  G01P3/52 ,  G01P13/00 ,  G08B21/00

CPC classification number: G01P13/045

Abstract: The present invention features a method and an apparatus for sensing the speed and the direction of rotation of a motor. The apparatus of the invention has a timing wheel disk that is attached to the rotational shaft of a motor and has a number of slots. Opposite the timing wheel are mounted two spaced-together proximity sensors that are a given or a fixed distance apart. The sensors are spaced to read within each slot of the disk at any given point during in the rotation of the timing wheel. When the sensors detect the edges of each slot of the rotating wheel, signals are generated. The sensors respectively define sensing channels A and B. A microcontroller contains a logic program that calculates the motor's speed and direction. Speed is determined by measuring the time that it takes for a point (the edge of a rotating disk's slot) to travel across both sensors. Direction is determined by storing the logic level of the first sensor (channel A) while a generated exclusive OR signal is high, and then analyzing the level of channel A when the exclusive OR is low. Channel A changes logic states over the exclusive OR period when the motor is rotating clockwise; it remains at the same logic state over the exclusive OR period when the motor is rotating counterclockwise. The invention requires no coupling or interface between the sensors. No moving parts are required by this invention, since the timing wheel is mounted directly upon the motor shaft, and the sensors are fixedly mounted adjacent the timing wheel on the brake drum, which requires no special bracketing.

Abstract translation: 本发明的特征在于一种用于感测电动机的速度和旋转方向的方法和装置。 本发明的装置具有连接到电动机的旋转轴的定时轮盘，并且具有多个槽。 正时轮相对安装了两个间隔一致的接近传感器，它们是给定的或固定的距离。 在正时轮旋转期间，传感器在任何给定点处间隔开以在盘的每个槽内读取。 当传感器检测到旋转轮的每个槽的边缘时，产生信号。 传感器分别定义感应通道A和B.微控制器包含一个计算电机速度和方向的逻辑程序。 速度通过测量一个点（旋转磁盘槽的边缘）在两个传感器上行进所花费的时间来确定。 通过在产生的异或信号为高时存储第一传感器（通道A）的逻辑电平，然后在异或低时分析通道A的电平来确定方向。 通道A在电机顺时针旋转时，在异或周期内更改逻辑状态; 当电机逆时针旋转时，它在异或周期内保持相同的逻辑状态。 本发明不需要传感器之间的耦合或接口。 本发明不需要移动部件，因为正时轮直接安装在电动机轴上，并且传感器固定安装在制动鼓上的正时轮附近，这不需要特殊的包围。

公开(公告)号：US5243278A

公开(公告)日：1993-09-07

申请号：US653585

申请日：1991-02-08

Applicant: Rand H. Hulsing, II

Inventor： Rand H. Hulsing, II

IPC: G01P3/46 ,  G01P3/52 ,  G01P3/58

CPC classification number: G01P3/58 ,  G01P3/46 ,  G01P3/52

Abstract: The invention comprises a velocity sensor (10, 30, 50, 60, 70, 110) that measures velocity in only one degree of freedom and is insensitive to the other five degrees of freedom. The velocity sensor uses differential flux splitting, and by sensing changes in flux, common mode effects are removed. In practising the invention, a permanent magnet (17, 33, 55, 65, 71, 131) is used to create a flux field, and multiple return paths are used to split the flux. A plurality of pole pieces (20-21, 39-40, 58-59, 66-67, 72-73, 111-112) simultaneously move an equal amount in relation to the return paths for differentially varying the amount of flux carried by each return path (13-14, 34-36, 52-53, 63-64, 73A-C and 75A-C, to thereby induce a differential voltage in secondary coils (15-16, 37-38, 56-57, 68-69, 80-83 and 90-93, 140-143 and 150-153). Detection means (not shown) is used to sense the change in voltage and provide an indication of the sensed velocity. The pole pieces and return paths are overlapped by an amount to ensure that one may move relative to the other a limited extent in directions not parallel to the sensitive axis without effecting a change in the net overlapped area, and the coils are arranged in series-connected, oppositely wound pairs so that common mode error signals are cancelled.

Abstract translation: 本发明包括速度传感器（10,30,50,60,70,110），该速度传感器仅在一个自由度上测量速度，并且对另外五个自由度不敏感。 速度传感器使用差分磁通分裂，并通过检测通量的变化，消除共模效应。 在实施本发明时，使用永磁体（17,33,55,65,71,131）来产生磁通场，并且使用多个返回路径来分离磁通。 多个极片（20-21,39-40,58-59,66-67,72-73,111-112）同时相对于返回路径移动相等量的量来差异地改变由 每个返回路径（13-14,34-36,52-53,63-64,73A-C和75A-C），从而在次级线圈（15-16,37-38,56-57， 68-69,80-83和90-93,140-143和150-153）检测装置（未示出）用于感测电压变化并提供感测速度的指示，极片和返回路径 重叠一定量，以确保可以相对于另一个移动的有限程度在不平行于敏感轴的方向上移动，而不影响网络重叠区域的变化，并且线圈被布置成串联连接的相对卷绕的对 该共模误差信号被取消。

公开(公告)号：US5241425A

公开(公告)日：1993-08-31

申请号：US910742

申请日：1992-07-08

Applicant: Satoshi Sakamoto ,  Norikatsu Inoue

Inventor： Satoshi Sakamoto ,  Norikatsu Inoue

IPC: G01P3/52 ,  G02B7/04

CPC classification number: G01P3/52 ,  G02B7/04

Abstract: In a velocity sensor having a coil and a stick-shaped magnet inserted into the coil and magnetized such that opposite magnetic poles are provided at opposite longitudinal ends thereof, the coil and the magnet being movable relatively, the coil is wound more at the ends than at the center thereof.

Abstract translation: 在具有线圈和棒状磁体的速度传感器中，该磁体被插入到线圈中并被磁化，使得在相对的纵向端设置相对的磁极，线圈和磁体可相对移动， 在其中心。