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序号	专利名	申请号	申请日	公开（公告）号	公开（公告）日	发明人
121	Dual-axis electromagnetic speed sensor with depth	US16185768	2018-11-09	US10852142B2	2020-12-01	Didier Caute; Danny J. Fladung; Craig Smith; Robert M. Cullen; William J. Letendre; Eric J. Beiswenger; Bruno Marie
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.
122	METHOD OF RECOGNIZING OBSTACLES ON OPERATION OF A VIBRATORY PILE DRIVER	US15905498	2018-02-26	US20180245303A1	2018-08-30	Patrick Jussel; Peter Loster
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.
123	SPEED SENSOR	US15504486	2015-09-22	US20170234904A1	2017-08-17	Frank Grunwald
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.
124	Apparatus and method for determining an engine speed	US11064580	2005-02-24	US20060186875A1	2006-08-24	Thaddeus Schroeder; Elias Taye
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.
125	Piston damper assembly, and dust tube subassembly, having a velocity sensor	US10643524	2003-08-19	US06866127B2	2005-03-15	Thomas W. Nehl; Fang Deng
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.
126	Measurement of displacement and speed in an injection molding machine	US4859	1998-01-09	US06016056A	2000-01-18	Mitsunori Seki
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.
127	Sensing motor speed and rotation direction	US139675	1993-10-22	US5446376A	1995-08-29	Randy D. Porter; Matthew W. Pankow
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.
128	Differential angular velocity sensor that is sensitive in only one degree of freedom	US653585	1991-02-08	US5243278A	1993-09-07	Rand H. Hulsing, II
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.
129	Velocity sensor	US910742	1992-07-08	US5241425A	1993-08-31	Satoshi Sakamoto; Norikatsu Inoue
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.
130	Speed detecting apparatus including a multi-coil device	US256063	1988-10-07	US4906923A	1990-03-06	Noboru Aoyama
Apparatus for detecting the speed of a moving object when exposed to primary magnetic flux fields and secondary external magnetic flux fields. The apparatus includes a magnetic device which generates the primary magnetic flux fields, a multi-coil device which carries induced electric currents when exposed to the primary magnetic flux field, and an error correction circuit for offsetting the effect of the magnetic flux from the external magnetic flux sources on the induced electric current. A support device is positioned between the multi-coil device and the magnetic device to allow relative movement therebetween, corresponding to the movement of the object.
131	Disk tracking device	US046029	1987-05-04	US4792707A	1988-12-20	Yasushi Katanuma
A tracking device has a linear motor having a driving coil, a speed sensor having a detection coil, and a moving member reciprocated in a predetermined range together with the driving coil and the detection coil. The moving member receives a driving force upon application of a current to the driving coil, and the detection coil generates a signal according to the speed of the moving member. The speed sensor includes two coils connected with each other in such a direction as to phase-cancel an induced voltage due to a magnetic field generated by the driving coil; at least one of the two coils is the detection coil. The detection coil and the driving coil are arranged on one side of the moving member in a single unit.
132	Magnetic tachometer or accelerometer having highly permeable eddy current flux circuit	US909762	1986-09-18	US4751459A	1988-06-14	Joseph J. Stupak, Jr.
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.
133	Diagnostic method for analyzing and monitoring the process parameters in the operation of reciprocating equipment	US710046	1985-03-11	US4734869A	1988-03-29	John Mickowski
The method of the present invention utilizes a microcomputer in combination with a CRT and a multiplicity of transducers for monitoring process parameters in the operation of a reciprocating device having a linear stroke. A profile of the process parameters including pressure and velocity are generated as a function of stroke length and time and are stored in a non-volatile memory and graphically displayed on the CRT as master traces for comparison with current data profiles. The velocity is calculated by dividing distance transversed with time or by use of a velocity position transducer.
134	Coil system for inductive measurement of the velocity of movement of a magnetized body	US654822	1984-09-26	US4658658A	1987-04-21	Johan K. Fremerey; Bernd Lindenau
A movement detection system for use in measuring movements of a rotating body or shaft which is magnetized along an axis which is angularly displaced from the mechanical axis of rotation thereof. The system has a plurality of inductive coils which are connected to produce signals proportional to the movements of the body or shaft while suppressing spurious noise signals.
135	Motion sensor utilizing eddy currents	US331272	1981-12-16	US4439728A	1984-03-27	James D. Rickman, Jr.
A sensor for measuring motion past the sensor of a non-magnetic conductive part surrounded by a non-magnetic conductive shield. The sensor consists of a bias magnet and pickup coil located outside the shield. Eddy currents are generated in the part as it moves through the magnetic field of the bias magnet. The eddy currents create an electromagnetic field around the part that penetrates the conductive shield causing the generation of secondary eddy currents in the shield. Secondary electromagnetic fields created by the secondary eddy currents induce a voltage in the pickup coil, a parameter of which is indicative of motion of the part.
136	Rotational direction detection device for a motor or the like	US31094	1979-04-18	US4283679A	1981-08-11	Susmu Ito; Morimasa Nagao
A rotational direction detection device is disclosed which has a single permanent magnet rotatable in response to the rotation of a rotary shaft. A magnetic field sensor is composed of a plurality of magnetic field detecting elements responsive to a rotating magnetic field produced by the rotation of the permanent magnet for generating an output representative of the rotation of the rotary shaft. The magnetic field detecting elements are arranged so that signals developed by at least two such elements differ in phase by a phase angle of other than 0 degree and 180 degrees. A rotary condition detector is responsive to the output of the magnetic field sensor for determining the rotational direction of the rotary shaft.
137	Vehicle speed indicator	US3704417D	1971-07-22	US3704417A	1972-11-28	DAVIS JUDSON S
A vehicle speed indicator and controller having a drive motor with differential field windings to position a constant force extension spring between two pulleys to indicate the vehicle speed. A potentiometer supplies a signal corresponding to vehicle speed to one of the differential field windings to cause rotation of the drive motor output shaft. Another potentiometer supplies a signal corresponding to the position of the constant force extension spring to the remaining differential field winding to stop rotation of the drive motor output shaft. The speed controller has a tape having magnetic properties positioned by the speed indicator. At the control speed, an electro-magnet is energized to attach to the tape which in turn transfers movement of the speed indicator to a power unit to control a vehicle throttle.
138	Method and apparatus for detecting a relative movement between two bodies being in frictional contact with each other	US3676769D	1969-06-13	US3676769A	1972-07-11	LOEPFE ERICH
An apparatus is provided for determining a relative movement between two bodies wherein the movement causes a sliding friction between the bodies. The friction causes changes in electrical charges in the friction zone. An electrical conductor is located within the operative range of these changes. The conductor is connected with a device amplifying and further processing the potential fluctuations of the conductor occurring during the relative movement which is to be determined.
139	車両情報検出装置	JP2018002097	2018-01-10	JP2019120645A	2019-07-22	古賀野源太郎
【課題】車両の位置や速度を精度良く検出する。【解決手段】車両情報検出装置は、車両(10)が走行する道路に敷設された複数の検出コイル(C_S)と、複数の検出コイルの電圧に関する情報を取得する取得手段(110)と、複数の検出コイルの電圧に関する情報に基づいて、車両の位置及び速度の少なくとも一方を推定する推定手段(120)とを備える。複数の検出コイルは、車両が複数の検出コイルの上を通過する際に、車両に設けられたコイル(C_R)と複数の検出コイルのうち2以上のコイルとが重なるように、車両の進行方向に対して交わる方向に並んで配置されており、推定部は、車両に設けられたコイルと、複数の検出コイルのうちいずれのコイルとが重なっているかを判定することで、車両の位置及び速度の少なくとも一方を推定する。【選択図】図2
140	Vibration Isolation System	JP2011501645	2010-02-25	JP5103549B2	2012-12-19	繁松本; 博至宮下; 一宏村内

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