Patents Assigned to Lumedyne Technologies Incorporated
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Patent number: 9989553Abstract: Systems and methods are described herein for extracting inertial information from nonlinear periodic signals. A system for determining an inertial parameter can include circuitry configured for receiving first and second analog signals from first and second sensors, each sensor responsive to motion of a proof mass. The system can include circuitry configured for determining a difference between the first and second analog signals, determining a plurality of timestamps corresponding to times at which the difference crosses a threshold, and determining a plurality of time intervals based on the timestamp. The system can include circuitry configured for determining a result of applying a trigonometric function to a quantity, the quantity based on the plurality of time intervals and determining the inertial parameter based on the result.Type: GrantFiled: May 20, 2016Date of Patent: June 5, 2018Assignee: Lumedyne Technologies IncorporatedInventors: Richard Lee Waters, Mark Steven Fralick, Charles Harold Tally, IV, John David Jacobs
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Patent number: 9910061Abstract: Systems and methods are disclosed herein for extracting system parameters from nonlinear periodic signals from sensors. A sensor such as an inertial device includes a first structure and a second structure that is springedly coupled to the first structure. The sensor is configured to generate an output voltage based on a current between the first and second structures. Monotonic motion of the second structure relative to the first structure causes a reversal in direction of the current.Type: GrantFiled: June 26, 2015Date of Patent: March 6, 2018Assignee: Lumedyne Technologies IncorporatedInventors: Richard Lee Waters, John David Jacobs, Charles Harold Tally, IV, Xiaojun Huang, Yanting Zhang, Mark Steven Fralick
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Patent number: 9910062Abstract: Systems and methods are disclosed herein for extracting system parameters from nonlinear periodic signals from sensors. A sensor such as an inertial device includes a first structure and a second structure that is springedly coupled to the first structure. The sensor is configured to generate an output voltage based on a current between the first and second structures. Monotonic motion of the second structure relative to the first structure causes a reversal in direction of the current.Type: GrantFiled: June 26, 2015Date of Patent: March 6, 2018Assignee: Lumedyne Technologies IncorporatedInventors: Richard Lee Waters, John David Jacobs, Charles Harold Tally, IV, Xiaojun Huang, Yanting Zhang, Mark Steven Fralick
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Patent number: 9645166Abstract: Systems and methods are disclosed herein for determining rotation. A gyroscope includes a drive frame and a base, the drive frame springedly coupled to the base. The gyroscope includes a drive structure configured for causing a drive frame to oscillate along a first axis. The gyroscope includes a sense mass springedly coupled to the drive frame. The gyroscope includes a sense mass sense structure configured for measuring a displacement of the sense mass along a second axis orthogonal to the first axis. The gyroscope includes measurement circuitry configured for determining a velocity of the drive frame, extracting a Coriolis component from the measured displacement, and determining, based on the determined velocity and extracted Coriolis component, a rotation rate of the gyroscope.Type: GrantFiled: June 26, 2015Date of Patent: May 9, 2017Assignee: Lumedyne Technologies IncorporatedInventors: Richard Lee Waters, John David Jacobs, Jeffrey Alan Brayshaw, Brad Wesley Chisum, Mark Steven Fralick, Charles Harold Tally, IV, Xiaojun Huang
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Patent number: 9618533Abstract: Systems and methods are disclosed herein for determining rotation. A gyroscope includes a drive frame and a base, the drive frame springedly coupled to the base. The gyroscope includes a drive structure configured for causing a drive frame to oscillate along a first axis. The gyroscope includes a sense mass springedly coupled to the drive frame. The gyroscope includes a sense mass sense structure configured for measuring a displacement of the sense mass along a second axis orthogonal to the first axis. The gyroscope includes measurement circuitry configured for determining a velocity of the drive frame, extracting a Coriolis component from the measured displacement, and determining, based on the determined velocity and extracted Coriolis component, a rotation rate of the gyroscope.Type: GrantFiled: June 26, 2015Date of Patent: April 11, 2017Assignee: Lumedyne Technologies IncorporatedInventors: Richard Lee Waters, Xiaojun Huang, Charles Harold Tally, IV, Yanting Zhang, John David Jacobs, Mark Steven Fralick
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Publication number: 20160341758Abstract: Systems and methods are described herein for extracting inertial information from nonlinear periodic signals. A system for determining an inertial parameter can include circuitry configured for receiving a first periodic analog signal from a first sensor that is responsive to motion of a proof mass, converting the first periodic analog signal to a first periodic digital signal, determining a result of trigonometrically inverting a quantity, the quantity based on the first periodic digital signal, and determining the inertial parameter based on the result.Type: ApplicationFiled: May 20, 2016Publication date: November 24, 2016Applicant: Lumedyne Technologies IncorporatedInventors: Richard Lee Waters, Mark Steven Fralick, Charles Harold Tally, IV, John David Jacobs
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Patent number: 9423254Abstract: Systems and methods are disclosed herein for extracting system parameters from nonlinear periodic signals from sensors. A sensor such as an inertial device includes a first structure and a second structure that is springedly coupled to the first structure. The sensor is configured to generate an output voltage based on a current between the first and second structures. Monotonic motion of the second structure relative to the first structure causes a reversal in direction of the current.Type: GrantFiled: June 26, 2015Date of Patent: August 23, 2016Assignee: Lumedyne Technologies IncorporatedInventors: Richard Lee Waters, John David Jacobs, Charles Harold Tally, IV, Xiaojun Huang, Yanting Zhang, Mark Steven Fralick
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Patent number: 8443673Abstract: A geophone including a plurality of ferromagnetic masses (e.g., magnets) disposed to oscillate on one or more compliant elements (e.g., springs) in a manner that produces a steep flux gradient at one or more conductive coils is disclosed. The magnetic masses are positioned with like poles facing each other so as to compress the magnetic field gradient. The coils may be positioned in the flux gap either between the magnets, in close proximity to the magnets, or surrounding the magnets. Vibration measurements may then be detected from the movement of at least one of the magnetic masses.Type: GrantFiled: August 3, 2009Date of Patent: May 21, 2013Assignee: Lumedyne Technologies IncorporatedInventors: Brad Chisum, Mark Fralick, Richard Waters
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Publication number: 20110023614Abstract: A geophone including a plurality of ferromagnetic masses (e.g., magnets) disposed to oscillate on one or more compliant elements (e.g., springs) in a manner that produces a steep flux gradient at one or more conductive coils is disclosed. The magnetic masses are positioned with like poles facing each other so as to compress the magnetic field gradient. The coils may be positioned in the flux gap either between the magnets, in close proximity to the magnets, or surrounding the magnets. Vibration measurements may then be detected from the movement of at least one of the magnetic masses.Type: ApplicationFiled: August 3, 2009Publication date: February 3, 2011Applicant: Lumedyne Technologies IncorporatedInventors: Brad Chisum, Mark Fralick, Richard Waters