Including "event" Sensing Means Patents (Class 324/178)
  • Patent number: 10458940
    Abstract: A system for insert detection includes a sensor and a processor. The processor is configured to receive capacitance measurement associated with the sensor and determine presence or absence of an insert based at least in part on the capacitance measurement and a threshold.
    Type: Grant
    Filed: June 23, 2016
    Date of Patent: October 29, 2019
    Assignee: Atlas Sensors, LLC
    Inventor: Philip J. Stephanou
  • Patent number: 10399394
    Abstract: A sensor module is provided that includes a magnetic sensor and a microcontroller. The magnetic sensor is configured to measure a magnitude of a magnetic field component of an Earth magnetic field projected on a sensing axis of the magnetic sensor and is configured to generate a measurement signal. The magnetic sensor is configured to rotate about an axis through the Earth magnetic field such that the measurement signal oscillates between a first and second extremas as the magnitude of the magnetic field component projected onto the sensing axis changes due to rotation of the magnetic sensor about the axis. The microcontroller is configured to receive the measurement signal, acquire a predetermined number of measurement samples over a sampling period, calculate a variance value of the acquired measurement samples, and determine whether the magnetic sensor is rotating about the axis based on a threshold test of the variance value.
    Type: Grant
    Filed: December 14, 2016
    Date of Patent: September 3, 2019
    Assignee: Infineon Technologies AG
    Inventors: Jooil Park, Felix Gow, Thomas Lange, Karine Pillet, Wolfgang Raberg, Maximilian Werner, Ren Yi You
  • Patent number: 10395518
    Abstract: Embodiments of present invention provide a wireless traffic sensor system. The system includes a first and a second wireless traffic sensors being installed in ground along a vehicle passing path; and a battery charging unit in vicinity of the first and second wireless traffic sensors, wherein the battery charging unit converts solar power into a plurality of electrical pulses, the electrical pulses being transmitted to at least the first and second wireless traffic sensors; and wherein the first and second wireless traffic sensors convert the plurality of electrical pulses into DC power, the DC power being used in charging a rechargeable battery inside the first and second wireless traffic sensors respectively.
    Type: Grant
    Filed: November 4, 2014
    Date of Patent: August 27, 2019
    Inventor: Tongqing Wang
  • Patent number: 9717967
    Abstract: A tennis racket fitting method according to the present invention comprises: a first step of preparing a plurality of test tennis rackets, at least one type of racket property that influences swing for hitting a ball being defined for each of the test tennis rackets; a second step of causing a reference tennis racket to be swung at least one time by a user in order to hit a tennis ball, and acquiring a measured value by measuring transition in at least one of the position, the velocity, the acceleration, and the angular velocity of the reference tennis racket in at least a portion of an interval from when the swing starts until when the swing ends; a third step of calculating at least one evaluation indicator to be an evaluation of the swing of the reference tennis racket based on the measured value; and a fourth step of, based on the racket property, selecting a tennis racket that can improve at least one evaluation indicator from among the test tennis rackets.
    Type: Grant
    Filed: October 15, 2012
    Date of Patent: August 1, 2017
    Assignee: DUNLOP SPORTS CO. LTD.
    Inventor: Yosuke Yamamoto
  • Patent number: 8773124
    Abstract: An embodiment of a magnetic-field sensor includes a magnetic-field sensor arrangement and a magnetic body which has, for example, a non-convex cross-sectional area with regard to a cross-sectional plane running through the magnetic body, the magnetic body having an inhomogeneous magnetization.
    Type: Grant
    Filed: May 30, 2008
    Date of Patent: July 8, 2014
    Assignee: Infineon Technologies AG
    Inventor: Udo Ausserlechner
  • Patent number: 8710825
    Abstract: Embodiments of the invention described herein provide a magnetic sensor interface capable of adjusting signal conditioning dynamically such that the true positive and negative peaks of the input signal are maintained for a given target across its entire speed range (0-Max rpm), therefore increasing the signal to noise ratio at low speeds and avoiding clipping or distortion at high speeds. In one aspect, a method comprises receiving an alternating differential voltage signal from a sensor. The alternating differential voltage signal has an amplitude that changes over time. The alternating differential voltage signal is converted to an attenuated single-ended voltage signal that can be dynamically scaled. The attenuated single-ended voltage signal can be scaled by multiplying the attenuated single-ended voltage signal by a scaling factor. The scaling factor is selected relative to a signal-to-noise ratio of the scaled attenuated single-ended voltage signal.
    Type: Grant
    Filed: February 23, 2011
    Date of Patent: April 29, 2014
    Assignee: General Electric Company
    Inventors: James Merrill Roylance, Daniel Zahi Abawi, Biplab Deb
  • Patent number: 8547050
    Abstract: Systems, methods, and devices are disclosed, including an induction-motor controller having a phase path; a solid-state switch interposed on the phase path; and a controller coupled to the solid-state switch. In certain embodiments, the controller is configured to switch the solid-state switch so that the solid-state switch is conductive during a conduction angle of a cycle of an incoming AC power waveform conveyed by the phase path, calculate the conduction angle based on a generally sinusoidal reference value that has a frequency lower than a frequency of the incoming AC power waveform, and adjust the generally sinusoidal reference value based on a value indicative of flux in a load coupled to the phase path.
    Type: Grant
    Filed: May 17, 2012
    Date of Patent: October 1, 2013
    Assignee: Rockwell Automation Technologies, Inc.
    Inventors: Haihui Lu, David M. Messersmith, Thomas A. Nondahl
  • Patent number: 8531182
    Abstract: A control system for use in safety critical human/machine control interfaces is described, more particularly a joystick type control system and particularly a joystick type control system utilizing magnetic positional sensing. The control system provides a control input device having a movable magnet, a pole-piece frame arrangement positioned about the magnet, at least three magnetic flux sensors being positioned in said pole-piece frame arrangement and a monitoring arrangement for monitoring the output signal of each of said at least three sensors.
    Type: Grant
    Filed: June 19, 2008
    Date of Patent: September 10, 2013
    Assignee: Penny & Giles Controls Limited
    Inventor: Dev Kumar Banerjee
  • Patent number: 8305071
    Abstract: An apparatus and method for measuring muzzle velocity (V0) of a projectile, which apparatus includes a smooth weapon barrel or firing barrel as a waveguide, a signal generator which is electrically connected via a signal supply line to at least one transmission coupler in order to energize the weapon barrel or firing barrel, and a receiving line for passing on the signals measured at at least one receiving coupler to an evaluation device. If the velocity is measured after the projectile has passed through, the receiving coupler is located between the projectile base and the transmission coupler, while the receiving coupler is between the projectile nose and the transmission coupler when the velocity (V0) is measured before the projectile passes through. The electromagnetic field of the empty weapon barrel is measured without a projectile, in front of the projectile or behind the projectile, or in combination. The muzzle velocity (V0) is then determined from the measured signals.
    Type: Grant
    Filed: May 21, 2009
    Date of Patent: November 6, 2012
    Assignee: Rheinmetall Air Defence AG
    Inventor: Henry Roger Frick
  • Patent number: 8169214
    Abstract: An angular position sensor and method that relies on a stationary circular array of Hall sensors and a rotatable circular array of magnets arranged about a common axis. A periodic and simultaneous reading of all of the Hall sensor outputs is used to determine angular velocity.
    Type: Grant
    Filed: June 6, 2008
    Date of Patent: May 1, 2012
    Assignee: Hydro-Aire, Inc.
    Inventor: Mark Zak
  • Patent number: 8148974
    Abstract: A pulse generator wheel has a cylindrical wall provided with windows distributed about a circumference of the cylindrical wall and closed axially at a first end by a ring. The ring is made of circumferentially extending profiled sections of profiled parts that are separated from one another. The pulse generator wheel is made by stamping in a round sheet metal about the circumference profiled parts each having at least one profiled section extending in the circumferential direction for forming windows between the profiled parts. The profiled sections are spaced from one another in the circumferential direction. The profiled parts are erected and the profiled sections then form a circumferential ring delimiting the windows axially.
    Type: Grant
    Filed: April 29, 2008
    Date of Patent: April 3, 2012
    Assignee: KACO GmbH & Co. KG
    Inventor: Thomas Brokelmann
  • Patent number: 8138709
    Abstract: Systems, methods, and devices are disclosed, including an induction-motor controller that has a motor controller configured to receive alternating current (AC) power with a voltage that varies generally sinusoidally and transmit the AC power during a conduction angle of a cycle of the AC power. In some embodiments, the conduction angle varies generally sinusoidally at a lower frequency than the AC power, and the motor controller may be configured to not transmit the AC power outside of the conduction angle.
    Type: Grant
    Filed: August 31, 2007
    Date of Patent: March 20, 2012
    Assignee: Rockwell Automation Technologies, Inc.
    Inventors: David M. Messersmith, John Herman Blakely
  • Publication number: 20100308799
    Abstract: A system includes a transceiver module and a rotating device. The transceiver module generates an electromagnetic (EM) field using an antenna. The rotating device includes N transponders arranged such that each of the N transponders passes through the EM field during one revolution of the rotating device. Each of the N transponders damps the EM field when passing through the EM field. The transceiver module determines a rotational speed of the rotating device based on a number of times the EM field is damped during a period. N is an integer greater than or equal to 1.
    Type: Application
    Filed: October 7, 2009
    Publication date: December 9, 2010
    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS, INC.
    Inventors: Qi Ma, Brian M. Tulkki
  • Patent number: 7780357
    Abstract: An antifriction bearing (A) for accommodating rotation about an axis (X) comprises an inner race (2) having a raceway (12), an outer race (4) having a raceway (22), rolling elements (6) positioned between the inner and outer races (2, 4) and contacting the raceways (12, 22) of those races (2, 4) so that when relative rotation occurs between the races (2, 4) the rolling elements (6) roll along the raceways (12, 22), a cage (8) positioned between the inner and outer races (2, 4) and having pockets (40) in which the rolling elements (6) are received with the cage (8) being rotatable between the races (2, 4) as the rolling elements (6) roll along the raceways (12, 22), the outer race (4) having a power transmitting coil (50) and a receiver (60), the cage (8) having a power receiving coil (52), a sensing unit (D) for sensing a condition of the bearing (A), and a transmitter (54) for sending a signal indicative of the sensed condition of the bearing (A) to the receiver (60).
    Type: Grant
    Filed: January 30, 2006
    Date of Patent: August 24, 2010
    Assignee: The Timken Company
    Inventor: Orestes J. Varonis
  • Patent number: 7538507
    Abstract: Control systems and speed estimation systems are presented having a transient-based speed estimation system that provides a rotor speed estimate based on a measured speed-related motor transient signal, and a transient excitation system which selectively modifies at least one switch control signal to excite the measured motor transient.
    Type: Grant
    Filed: April 28, 2007
    Date of Patent: May 26, 2009
    Assignee: Rockwell International Technologies, Inc.
    Inventors: Haihui Lu, Thomas A. Nondahl, David M. Messersmith
  • Patent number: 7532969
    Abstract: A gas turbine engine having at least a rotor shaft operatively connecting a compressor apparatus and a turbine apparatus, comprises an auxiliary gear box and a phonic wheel apparatus. The auxiliary gear box is drivingly connected to the rotor shaft and the phonic wheel apparatus includes an oil pump having toothed gear and a sensor mounted to the oil pump for sensing a rotational speed of the toothed gear.
    Type: Grant
    Filed: March 9, 2006
    Date of Patent: May 12, 2009
    Assignee: Pratt & Whitney Canada Corp.
    Inventors: Vittorio Bruno, Francis Bonacorsi
  • Publication number: 20080297144
    Abstract: Device for measuring the separation, between any vehicle of a number of vehicles and the preceding vehicle along a stretch and for a direction, includes a reference conductor and a measuring conductor, along the stretch, the latter including a number of serial separate sections. Each section is electrically-connected to the previous section, via a diode. A constant current generator is provided in each vehicle, whose contacts are each connected to a section of the measuring conductor, corresponding to the position of the vehicle and to the reference conductor, via first and second moving contacts. Each second electric contact is connected to a segment, following the section, lying behind the first electrical contact, the direction of travel, via a corresponding third moving electrical contact. The contacts of the constant current generator form an output, which provides a voltage signal correlated to the distance between the relevant vehicle and the previous vehicle.
    Type: Application
    Filed: August 4, 2005
    Publication date: December 4, 2008
    Inventor: Jörg Schweizer
  • Publication number: 20080176681
    Abstract: An apparatus is configured for inclusion in an arrow. In one embodiment, the apparatus includes a sensor configured to provide data concerning one or more flight characteristics of the arrow in flight and a communication link coupled to the sensor, the communication link configured to communicate the data to a device external to the arrow.
    Type: Application
    Filed: January 17, 2008
    Publication date: July 24, 2008
    Inventor: Robert V. Donahoe
  • Patent number: 7267016
    Abstract: A sensitizing ring for sensors having a reduced manufacturing cost and an improved profile shape manufacture with a diameter of 120 mm or less. The sensitizing ring of the present invention is used to measure the rate of rotation and position of a rotating element. The sensitizing ring of the present invention is usable in more applications, especially in the automotive industry. The sensitizing ring comprises a body, a plurality of teeth provided on an outer periphery thereof, and a plurality of gaps interposed between the teeth. The body is made of a polymeric material interspersed with a ferromagnetic material. Alternately, the body is made of a polymeric material having a coating layer of ferromagnetic material. In a further embodiment, the body includes ferromagnetic material in the polymeric material forming the teeth but does not include ferromagnetic material in the polymeric material forming the gaps.
    Type: Grant
    Filed: June 28, 2005
    Date of Patent: September 11, 2007
    Assignee: Sabo Industria e Comercio Ltda
    Inventor: Orlando Da Mota Pavan
  • Patent number: 7227326
    Abstract: AC motor control systems and speed controllers are presented, including a transient-based speed estimation system that provides a rotor speed estimate based on a measured speed-related motor transient signal, and a transient excitation system which selectively modifies at least one switch control signal to excite the measured motor transient. The measured speed-related transient may include a phase error signal, a phase lag signal, a peak current signal, a voltage integral signal, a motor winding voltage signal, a switching device voltage, and a voltage zero crossing signal, and the switching signal modification can comprise removal of select pulse(s) from a switching control pulse stream or selective modification of spacings between pulses to re-excite the motor transient.
    Type: Grant
    Filed: April 24, 2006
    Date of Patent: June 5, 2007
    Assignee: Rockwell Automation Technologies, Inc.
    Inventors: Haihui Lu, Thomas A. Nondahl, David M. Messersmith
  • Patent number: 7211998
    Abstract: A collision sensing apparatus includes an acceleration sensor, first and second connector terminals, reference connector terminals and leads. The acceleration sensor is shaped into a square form. First and second contacts are provided in two diagonally opposed corner portions of the sensor. Reference contacts are arranged in the other two diagonally opposed corner portions of the sensor. The first and second connector terminals are opposed to the first and second contacts, respectively. The reference connector terminals are opposed to the reference contacts, respectively. The leads connect the first and second connector terminals and the reference connector terminals to the first and second contacts and the reference contacts.
    Type: Grant
    Filed: June 26, 2006
    Date of Patent: May 1, 2007
    Assignee: Denso Corporation
    Inventor: Jun Oonishi
  • Patent number: 7116096
    Abstract: A tone ring preferably for use in a braking system of a vehicle has a first pattern of excitation indicative of speed of rotation of the tone ring, and a second pattern of excitation including frequency variations that is indicative of direction of rotation of the tone ring. The tone ring is rotated past a sensor, preferably a 2-wire passive sensor. A series of events are sensed during rotation of the tone ring past the sensor. The timing of occurrence of the events is detected and, on the basis of the timing detection, the direction of rotation of the tone ring is determined.
    Type: Grant
    Filed: August 13, 2003
    Date of Patent: October 3, 2006
    Assignee: Bendix Commercial Vehicle Systems LLC
    Inventors: Paul J. Waszkowski, David J. Taneyhill, Mark Bennett
  • Patent number: 6999859
    Abstract: A vehicle speed measuring apparatus includes front and rear wheel side vibration detection sensors for detecting vibrations from a road surface through tires, an input section through which the vibration detection sensors input their detection values, and a processing unit for calculating vehicle speed of the vehicle based on a change pattern of the detection values inputted. When the detection values are inputted through the input section, the processing unit feature extracts a change pattern of the detection values for the respective front and rear wheel sides by excluding inherent tire influences on the detection values, executes pattern matching between the front and rear wheel sides on the basis of the feature extracted change patterns of the detection values, and obtains a time difference from a coincidence of the change patterns, and thereafter calculates vehicle speed based on the time difference and a reference distance such as a wheel base.
    Type: Grant
    Filed: October 23, 2003
    Date of Patent: February 14, 2006
    Assignee: Honda Motor Co., Ltd.
    Inventor: Keiyu Kin
  • Publication number: 20040251892
    Abstract: An airbag deployment sensor has a cartridge containing a quantity of tape one end of which is attached to the inside surface of an airbag cushion. Deployment of the cushion pulls tape from the cartridge at a rate that is monitored by transmitting light through the tape, or by detecting the presence of metalized, or magnetic shielding portions, of the tape.
    Type: Application
    Filed: May 14, 2004
    Publication date: December 16, 2004
    Inventors: Robert P. Pettypiece, Tex K. Monroe, Timothy Ilyes
  • Publication number: 20040207388
    Abstract: An airbag deployment sensor has a cartridge containing a quantity of tape one end of which is attached to the inside surface of an airbag cushion. Deployment of the cushion pulls tape from the cartridge at a rate that is monitored by transmitting light through the tape, or by detecting the presence of metalized, or magnetic shielding portions, of the tape.
    Type: Application
    Filed: May 14, 2004
    Publication date: October 21, 2004
    Inventors: Robert P. Pettypiece, Tex K. Monroe, Timothy Ilyes
  • Publication number: 20040174156
    Abstract: An airbag deployment sensor has a cartridge containing a quantity of tape one end of which is attached to the inside surface of an airbag cushion. Deployment of the cushion pulls tape from the cartridge at a rate that is monitored by transmitting light through the tape, or by detecting the presence of metalized, or magnetic shielding portions, of the tape.
    Type: Application
    Filed: March 7, 2003
    Publication date: September 9, 2004
    Inventors: Robert P. Pettypiece, Tex K. Monroe, Timothy Ilyes
  • Publication number: 20040164726
    Abstract: Linear velocity sensor and method for reducing non-linearity in the output signal of the sensor are provided. The sensor comprises a ferromagnetic housing including an opening. The sensor further comprises a spool disposed in the housing. The spool includes a bore for receiving a slidable ferromagnetic rod. The ferromagnetic rod may be extendable through the opening in the housing. A magnet is mounted at the one end of the rod distal from the opening when the rod is substantially inserted in the bore. A coil is wound on the spool. The number of turns of the coil is arranged to taperingly increase as the coil progresses from an end of the spool proximate the opening in the housing to the opposite end of the spool. The tapering arrangement for the number of turns of the coil is selected to reduce non-linearity of an output signal of the coil indicative of linear velocity.
    Type: Application
    Filed: February 26, 2003
    Publication date: August 26, 2004
    Inventors: Yingjie Lin, Steven Douglas Thomson, Samuel Roland Palfenier
  • Patent number: 6670803
    Abstract: An apparatus for determining a velocity of a part through a part feeder tube. The part feeder tube defines an axis. The apparatus includes first and second sensors spaced axially from each other by a predetermined distance (d). The first sensor sends a first signal in response to sensing the part and the second sensor sends a second, subsequent signal in response to sensing the part. The velocity of the part is based on the distance (d) and the first and second signals.
    Type: Grant
    Filed: March 27, 2002
    Date of Patent: December 30, 2003
    Assignee: Honda Giken Kogyo Kabushiki Kaisha
    Inventor: Brent Rankin
  • Publication number: 20030184283
    Abstract: An apparatus for determining a velocity of a part through a part feeder tube. The part feeder tube defines an axis. The apparatus includes first and second sensors spaced axially from each other by a predetermined distance (d). The first sensor sends a first signal in response to sensing the part and the second sensor sends a second, subsequent signal in response to sensing the part. The velocity of the part is based on the distance (d) and the first and second signals.
    Type: Application
    Filed: March 27, 2002
    Publication date: October 2, 2003
    Applicant: Honda of America Mfg., Inc.
    Inventor: Brent Rankin
  • Patent number: 6590386
    Abstract: A universal electronics system has a body adapted to be removably mounted at the muzzle end of the barrel of almost any paintball marker. A pair of spaced detector units signal the time it takes for a paintball to pass through a portion of the body. A muzzle velocity calculating device converts the detector signals to a muzzle velocity, which is displayed on a display screen. The universal electronics system may further comprise a ball counter, a player counter, a clock, a chronometer that records elapsed time, a timer for recording time remaining in a game, and a thermometer. All of the data can be displayed on the display screen.
    Type: Grant
    Filed: November 27, 2000
    Date of Patent: July 8, 2003
    Assignee: Brass Eagle, Inc.
    Inventor: Benjamin M. Williams
  • Patent number: 6498476
    Abstract: A device for sensing projectile velocity in an underwater environment is provided. The device includes a plurality of evenly spaced break screen members positioned in a path of the projectile. Each break screen member includes a support member, a pair of transparent sheets spanning the support member, a continuous resistive trace sandwiched between the transparent sheets, and a sensing member correspondingly connected to each resistive trace. The sensing member includes means for outputting a signal responsive to impact of the projectile against the break screen, and a logic arrangement for determining a difference between impact of at two adjacent break screens throughout the run of break screens, thereby determining a velocity of the projectile.
    Type: Grant
    Filed: April 28, 2000
    Date of Patent: December 24, 2002
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventors: John R. Raposa, Daniel P. Thivierge
  • Patent number: 6467342
    Abstract: An apparatus for measuring velocity of a projectile includes a plurality of break-screens aligned with each other serially and along a line of travel of the projectile, and parallel to each other, and spaced from each other and from a projectile firing device by selected distances. Each break-screen includes a support sheet and an electrically conductive wire mounted on the sheet so as to be interrupted by passage of the projectile through the sheet. A single amplifier is in communication with each of the conductive wires and is adapted to provide an indication as to a change in voltage in each of the break-screens upon passage of the projectile therethrough, and an indication as to time of the passage. A data collection/display apparatus computes therefrom the velocity of the projectile.
    Type: Grant
    Filed: August 30, 2000
    Date of Patent: October 22, 2002
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventor: Thomas J. Gieseke
  • Patent number: 6456904
    Abstract: A method and apparatus for winning a race without exceeding a maximum performance of a car, whereby maximum performance is based upon consecutive prior races. The method is comprised of determining an optimal distance by which a first car having a first performance should trail a second car having a second performance at a predetermined distance of 66 feet from a finish line on a race track having a fixed distance of 1320 feet whereby a racer uses optimal distance during a race to influence his or her rate of speed.
    Type: Grant
    Filed: September 13, 2001
    Date of Patent: September 24, 2002
    Inventor: Robert Gay
  • Patent number: 6388438
    Abstract: A system for sensing projectile velocity and position having a plurality of support members positioned in a path of said projectile. Each support member has an aperture with a resistive trace supported in the aperture. The resistive trace can be separated by the projectile's passage. A sensing circuit is joined to each resistive trace and provides a signal indicating separation of the resistive trace. This signal is provided to a logic circuit which provides a single signal indicating separation of each said resistive trace. A data acquisition system provides an output indicating said projectile velocity and position with respect to time.
    Type: Grant
    Filed: April 28, 2000
    Date of Patent: May 14, 2002
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventors: John R. Raposa, Daniel P. Thivierge
  • Patent number: 6292112
    Abstract: A passive magnetic detector is provided at ground level or buried below ground level in between rails of a railroad track at a distance from the level crossing for detecting magnetic field disturbances caused by ferromagnetic objects passing overhead on the track. Magnetic field reversals are detected in the passive detector signal. The reversal signal is analyzed and a train presence output signal is generated for controlling a level crossing gate system or other such crossing warning system. For parallel tracks, pairs of passive magnetic field detectors detect objects over each track and the reversals are analyzed to check that an inbound train does not sneak by undetected as an outbound train is leaving and passing over the same detector pair. At the level crossing, static magnetic field detectors are used to ensure that no equipment remains on the island after detecting that the moving train has left the crossing, so that the crossing gates can be safely lifted as soon as possible.
    Type: Grant
    Filed: December 14, 1999
    Date of Patent: September 18, 2001
    Assignee: 3461513 Canada Inc.
    Inventors: Clifford Bader, Charles De Renzi
  • Patent number: 6191574
    Abstract: An apparatus for quantifying the position of a released arrow as it passes across the bow riser. A low power, electronics measurement unit attached onto or mounted internal to a bow in communication with a sensor detects a signal from an arrow shaft for the purposes of collecting data pertaining to arrow position. The electronics measurement unit provides a user configurable gain to control the variation and sensitivity of the collected data. The optical trigger mechanism used to stimulate the sensor does not require arrow shaft modification. Statistical parameters of the collected data are displayed on the bow and are used to determine and improve archery tackle performance.
    Type: Grant
    Filed: January 20, 1998
    Date of Patent: February 20, 2001
    Inventor: John Patrick Dilger
  • Patent number: 6029120
    Abstract: A instrument and method for measuring archery tackle performance is disclosed. A low power, electronics measurement unit attached onto or mounted internal to a bow in communication with a sensor which detects a signal from an external trigger mechanism mounted onto or internal to an arrow shaft for the purposes of measuring arrow velocity or collecting data indicative of arrow position. The statistical parameters of the collected data may then be used to determine and improve archery tackle performance in any shooting situation.
    Type: Grant
    Filed: January 20, 1998
    Date of Patent: February 22, 2000
    Assignee: Innoventive Technologies and Services LLC
    Inventor: John Patrick Dilger
  • Patent number: 6026355
    Abstract: A power consumption meter is disclosed for measuring the power consumed by a load on a power conductor, wherein the electronics of the power consumption meter are isolated from lightning and power transients. The meter has a first GMR sensor that is disposed proximate the power conductor and is magnetically coupled to the power conductor. The first GMR sensor detects magnetic flux in the power conductor and produces a first output responsive to the detected magnetic flux that is representative of the current flowing through the power conductor. A second GMR sensor is disposed proximate the power conductor and is magnetically coupled to the power conductor. The second GMR sensor detects magnetic flux in the power conductor and produces a second output responsive to the detected magnetic flux that is representative of the voltage on the power conductor.
    Type: Grant
    Filed: June 23, 1998
    Date of Patent: February 15, 2000
    Assignee: Itron, Inc.
    Inventors: Mizanur Rahman, Roberto Capriotti, Jerry J. Conley, Gary B. Mortensen
  • Patent number: 6014599
    Abstract: To achieve both accuracy in correcting sensing error caused by nonstandard factors of a pulse signal generated by rotation of a rotor to be measured and reduction in cost of an apparatus for doing the same, each passage of rotor sensors which rotate integrally with vehicle tires are sensed to produce pulse signals. The pulse signal periods are sequentially integrated every pulse signal train consisting of multiple pulse signals. When all of the pulse signal periods of the pulse signal train are integrated, the integrated value is stored in memory. The memory always stores the integrated values of the newest one rotation of the rotor to be measured. The pulse signal periods are averaged from the sum of the integrated values. With such a construction, the average of the pulse signal periods can be obtained as a learning reference value in the correction without storing all of the pulse signal periods of one rotation, thereby realizing both correction accuracy and cost reduction.
    Type: Grant
    Filed: August 28, 1997
    Date of Patent: January 11, 2000
    Assignee: Denso Corporation
    Inventors: Yuichi Inoue, Takeyasu Taguchi
  • Patent number: 5977764
    Abstract: A method is provided for determining the speed and direction of a rotating shaft. A rotor is connected to the shaft. The rotor includes three circumferentially spaced teeth, the first of said teeth having a first center spacing, the second of said teeth having a second center spacing different than the center spacing of the first tooth, and the third of said teeth having a third center spacing different than the center spacing of the second tooth. The centers of each of said teeth is sensed and a signal is produced in response thereto. A first time period to reach the center of the first tooth, a second time period to reach the center of the second tooth and a third time period to reach the center of the third tooth are determined, then the speed and direction of rotation of the shaft are established.
    Type: Grant
    Filed: December 5, 1997
    Date of Patent: November 2, 1999
    Assignee: Ford Global Technologies, Inc.
    Inventors: Bradley Dean Riedle, Charles William Suter, David Andrew Franchock, Patrick William Gibson, Robert Cary Haase
  • Patent number: 5823460
    Abstract: In order to determine the diameter or the radius of a textile yarn cheese during winding, two sensors are placed adjacent the cheese circumference at a fixed circumferential distance from each other to detect surface characteristics of the cheese, and their sensor signals are evaluated in a correlator to form running times. The circumferential velocity of the cheese is calculated by dividing the distance between the sensors by the running times, after which the circumferential velocity and the angular velocity of the cheese are divided to compute the diameter or radius of the cheese.
    Type: Grant
    Filed: June 23, 1997
    Date of Patent: October 20, 1998
    Assignee: W. Schlafhorst AG & Co.
    Inventor: Ferdinand-Josef Hermanns
  • Patent number: 5757178
    Abstract: In order to exclude disturbing influences in the determination of the axle-related speeds of railway vehicles, the signals generated by the passage of the last axle of a bogie are discerned from spurious signals. This is carried out by specifying a time window within which the last axle of a bogie must have passed the measuring zone. Those signals separated by about the same offset time as the time between the passage of the first axle of the first and second sensors are used for the determination of the speed of this last axle. An additional integrity check further increases the reliability signal identification by comparing the sum of certain measured time values which have been detected by the two sensors of the measuring zone. The assignment of the time values respectively to the pulse centers of the event indication eliminates different response tolerances of the sensors due to the lateral offset of the vehicle wheels with respect to the rails in the region of the sensors.
    Type: Grant
    Filed: December 20, 1995
    Date of Patent: May 26, 1998
    Assignee: Siemens Aktiengesellschaft
    Inventors: Peter Luehrs, Gerhard Wilms
  • Patent number: 5652509
    Abstract: A device for determining the velocity of a longitudinally traveling textile material, especially a yarn, using the closed-loop correlation of a transit time correlator in such a way that its reliability is improved. At least one sensor g.sub.1 consists of two signal receivers disposed one behind the other in the running direction of the yarn, having a sensor output characteristic curve with the intersection of the abscissa in the effective sensor center axis, and wherein the output characteristic curve shows a point-symmetrical behavior at least in the vicinity of the intersection with the abscissa. A second sensor g.sub.2 has a steady state output characteristic curve in the area of its effective sensor center axis. The control loop circuit of the transit time correlator is designed such that the undifferentiated cross-correlation function is used as the controller input signal for determining and readjusting the adjustment point for the model delay time .tau..
    Type: Grant
    Filed: September 25, 1995
    Date of Patent: July 29, 1997
    Assignee: W. Schlafhorst AG & Co.
    Inventor: Manfred Weis
  • Patent number: 5637996
    Abstract: A toy speed measuring and voice reporting system is disclosed. The system measures the speed of a toy car and reports the speed contemporaneously in audible speech. The system employs optical detectors and timing circuitry to compute the speed, and a voice synthesizer to sound the speed values and other messages.
    Type: Grant
    Filed: November 18, 1994
    Date of Patent: June 10, 1997
    Assignee: Link Group International
    Inventors: Robert S. McDarren, Thomas L. Simmel
  • Patent number: 5631558
    Abstract: An apparatus and a method for simultaneously measuring velocity and an instantaneous spatial position of a spherical object. A first group of sensors and a second ground of sensors are arranged at known positions at intervals each less than the radius of the spherical object. The times when the spherical object begins to intercept the sensors of the groups of sensors and the time lengths of the respective interceptions are measured by using an instrumentation device. The velocity and instantaneous spatial position of the spherical object are calculated by using an arithmetic unit on the basis of the measured times and time lengths.
    Type: Grant
    Filed: April 14, 1995
    Date of Patent: May 20, 1997
    Assignee: Sumitomo Rubber Industries, Ltd.
    Inventors: Kazunari Yoshida, Shinji Ohshima, Takashi Teraguchi
  • Patent number: 5614823
    Abstract: An apparatus and a method for measuring head speed and an opening angle. At least four sensors are disposed at each vertex of a defined rectangle. An instrumentation device measures differences in time between instants in which a moving head intercepts rays of light toward the sensors, respectively. An arithmetic unit calculates head speed and an opening angle on the basis of the measured time differences.
    Type: Grant
    Filed: April 13, 1995
    Date of Patent: March 25, 1997
    Assignee: Sumitomo Rubber Industries, Ltd.
    Inventors: Hiroyuki Katayama, Shinji Ohshima, Takashi Teraguchi
  • Patent number: 5537322
    Abstract: In a system and a method for determining the speed gradient dn/dt of a shaft of an internal combustion engine, the speed gradient dn/dt is determined as a function of the third power of the speed and the difference between two segment times in the control device. The speed gradient is only determined in phases which are not time-critical, while segment times are read in or stored only in time-critical phases so that the data required for controlling and regulating the internal combustion engine can be calculated in these time-critical phases independently from the determination of the speed gradient.
    Type: Grant
    Filed: September 6, 1994
    Date of Patent: July 16, 1996
    Assignee: Robert Bosch GmbH
    Inventors: Helmut Denz, Ernst Wild, Klaus Boettcher, Georg Mallebrein, Christian Tischer
  • Patent number: 5485078
    Abstract: A new method for analyzing an electrical waveform of the type portrayed on a graph includes the steps of selecting a waveform to be analyzed, establishing the boundary of a window-like area and generating a signal if the waveform is in a predetermined position with respect to the area. For example, a signal such as a failure signal is generated if the waveform is to be out of the area but, in fact, is in the area. The method also includes features for determining certain parameters, e.g., rise time, period and the like, for the waveform. The steps include selecting first and second points on the waveform and determining the time lapsed between points. Details regarding the structure of a new waveform analyzer are also disclosed.
    Type: Grant
    Filed: March 23, 1994
    Date of Patent: January 16, 1996
    Assignee: Venturedyne, Ltd.
    Inventors: Peter A. Liken, Mark C. Jacobs, Monte E. Van Nortwick
  • Patent number: 5475724
    Abstract: A speedometer/odometer apparatus, wherein a sensor inputs an electronic sensing signal to an amplifier and a selecting device to be amplified and output as a stable single stroke signal. The signal is combined with a frequency signal from a crystal oscillator and divided into regular pulses. The frequency of the pulses is divided by a frequency divider circuit and output as two signals with high accuracy for respectively controlling the speed indication of the speedometer and mileage indication of the odometer.
    Type: Grant
    Filed: July 29, 1994
    Date of Patent: December 12, 1995
    Inventor: Paul Liu
  • Patent number: 5473257
    Abstract: A system and method are provided for establishing the feed rate of a workpiece along a feed path with respect to a machine device. First and second sensors each having first and second sensing electrodes which are electrically isolated from the workpiece are positioned above, and in proximity to the desired surfaces of the workpiece along a feed path. An electric field is developed between the first and second sensing electrodes of each sensor and capacitance signals are developed which are indicative of the contour of the workpiece. First and second image signals representative of the contour of the workpiece along the feed path are developed by an image processor. The time delay between corresponding portions of the first and second image signals are then used to determine the feed rate based upon the separation of the first and second sensors and the amount of time between corresponding portions of the first and second image signals.
    Type: Grant
    Filed: August 26, 1994
    Date of Patent: December 5, 1995
    Assignee: Sandia Corporation
    Inventors: James L. Novak, James J. Wiczer