公开(公告)号：US09229026B2

公开(公告)日：2016-01-05

申请号：US13085900

申请日：2011-04-13

Applicant: Robert E. Stewart ,  Daryl Sakaida ,  Michael D. Bulatowicz ,  Ming Li ,  John Thomson Douglass

Inventor： Robert E. Stewart ,  Daryl Sakaida ,  Michael D. Bulatowicz ,  Ming Li ,  John Thomson Douglass

IPC: G01P15/00 ,  G01P15/13 ,  G01C19/5705 ,  G01P15/125 ,  G01P15/08

CPC classification number: G01P15/131 ,  G01C19/5705 ,  G01P15/125 ,  G01P2015/0834

Abstract: An accelerometer system can include a sensor element comprising first and second proofmasses, the first proofmass accelerating in a first direction and the second proofmass accelerating in a second direction opposite the first direction in response to an external acceleration. A force rebalance controller applies control signals to at least one control element to provide a first force to accelerate the first proofmass toward a first null position and to at least one control element to provide a second force to accelerate the second proofmass toward a second null position. The force rebalance controller can also generate opposite polarity first and second output signals associated with respective displacements of the first and second proofmasses relative to the respective first and second null positions. An acceleration component calculates the external acceleration based on the first and second output signals.

Abstract translation: 加速度计系统可以包括传感器元件，该传感器元件包括第一和第二校准物，第一校准物质沿第一方向加速，第二校正物质响应于外部加速度沿与第一方向相反的第二方向加速。 力重平衡控制器将控制信号施加到至少一个控制元件，以提供第一力，以将第一校正力朝着第一零位置加速，以及至少一个控制元件，以提供第二力以将第二校正力加速到第二零位置 。 力重平衡控制器还可以产生与第一和第二校准物相对于相应的第一和第二无效位置的相应位移相关联的相反极性的第一和第二输出信号。 加速度分量基于第一和第二输出信号来计算外部加速度。

公开(公告)号：US20150346293A1

公开(公告)日：2015-12-03

申请号：US14291595

申请日：2014-05-30

Applicant: MICHAEL D. BULATOWICZ ,  MICHAEL S. LARSEN

Inventor： MICHAEL D. BULATOWICZ ,  MICHAEL S. LARSEN

IPC: G01R33/26 ,  G01C19/62

CPC classification number: G01R33/26 ,  G01C19/62

Abstract: One example embodiment includes an atomic sensor system. A probe laser generates a probe beam. A first portion of the probe beam is provided through a sensor cell comprising a first alkali vapor to calculate a measurable parameter of the system based on a first detection beam corresponding to the first portion of the probe beam exiting the sensor cell. A second portion of the probe beam can be provided through a stabilization cell that comprises a second vapor. A detection system can be configured to stabilize the frequency of the probe beam in a manner that is on-resonance with respect to an optical transition wavelength of the second alkali vapor and off-resonance with respect to an optical transition wavelength of the first alkali vapor based on a second detection beam corresponding to the second portion of the probe beam exiting the stabilization cell.

Abstract translation: 一个示例性实施例包括原子传感器系统。 探头激光产生探针光束。 探测光束的第一部分通过包括第一碱性蒸汽的传感器单元提供，以基于对应于离开传感器单元的探测光束的第一部分的第一检测光束来计算系统的可测量参数。 探针束的第二部分可以通过包括第二蒸气的稳定池提供。 检测系统可以被配置为以相对于第二碱性蒸汽的光学跃迁波长为共振的方式稳定探测光束的频率，并且相对于第一碱性蒸气的光学跃迁波长为非共振 基于对应于离开稳定单元的探测光束的第二部分的第二检测光束。

公开(公告)号：US20150330786A1

公开(公告)日：2015-11-19

申请号：US14278940

申请日：2014-05-15

Applicant: MICHAEL D. BULATOWICZ ,  MICHAEL S. LARSEN

Inventor： MICHAEL D. BULATOWICZ ,  MICHAEL S. LARSEN

IPC: G01C19/62 ,  G01R33/26

CPC classification number: G01C19/62 ,  G01R33/26

Abstract: One embodiment includes an atomic sensor system. The system includes a vapor cell that is sealed to enclose an alkali metal that is spin-polarized by an optical beam. The vapor cell includes a mirror at a distal end. The system also includes an optical system including a photodetector system and a laser that generates the optical beam. The optical beam is provided into a proximal end of the vapor cell and is reflected back to the photodetector system via the mirror as a reflected optical beam to generate at least one intensity signal. The optical system further includes a control system that modulates a wavelength of the optical beam between an on-resonance wavelength and an off-resonance wavelength with respect to the alkali metal. The system also includes a processor that calculates a measurable parameter associated with the atomic sensor system based on the at least one intensity signal.

Abstract translation: 一个实施例包括原子传感器系统。 该系统包括一个蒸气池，其被密封以包围由光束自旋极化的碱金属。 蒸汽池包括在远端的反射镜。 该系统还包括包括光电检测器系统和产生光束的激光器的光学系统。 光束被提供到蒸汽单元的近端，并且经由反射镜作为反射光束被反射回到光电检测器系统以产生至少一个强度信号。 光学系统还包括控制系统，该控制系统调制相对于碱金属的共振波长和离共振波长之间的光束的波长。 该系统还包括处理器，该处理器基于至少一个强度信号来计算与原子传感器系统相关联的可测量参数。

公开(公告)号：US09062973B2

公开(公告)日：2015-06-23

申请号：US13017660

申请日：2011-01-31

Applicant: Michael D. Bulatowicz

Inventor： Michael D. Bulatowicz

IPC: G01V3/00 ,  G01C19/62 ,  G01C19/58 ,  G01R33/26

CPC classification number: G01C19/62 ,  G01C19/58 ,  G01R33/26

Abstract: One embodiment of the invention includes an atom beam gyroscope system. The system includes an atom beam system that generates an atom beam comprising alkali metal atoms along a length of a detection region orthogonal to a sensitive axis. The system also includes a detection system comprising a detection laser and photodetector. The detection laser can generate an optical detection beam that illuminates the detection region to pump the alkali metal atoms. The photodetector can measure an optical absorption of the optical detection beam by the alkali metal atoms in the atom beam and to generate an intensity signal associated with the measured optical absorption. The system further includes a gyroscope sensor configured to calculate rotation of the atom beam gyroscope system about the sensitive axis based on a magnitude of the intensity signal due to a Doppler-shift in energy of the alkali metal atoms in the atom beam.

Abstract translation: 本发明的一个实施例包括原子束陀螺仪系统。 该系统包括原子束系统，其产生沿着与敏感轴正交的检测区域的长度的包含碱金属原子的原子束。 该系统还包括检测系统，其包括检测激光和光检测器。 检测激光器可以产生照射检测区域以泵送碱金属原子的光学检测光束。 光电检测器可以通过原子束中的碱金属原子测量光学检测光束的光吸收，并产生与所测量的光吸收相关的强度信号。 该系统还包括陀螺仪传感器，该陀螺仪传感器被配置成基于原子束中的碱金属原子的能量的多普勒偏移，基于强度信号的大小来计算原子束陀螺仪系统围绕敏感轴的旋转。

公开(公告)号：US20140230520A1

公开(公告)日：2014-08-21

申请号：US13771792

申请日：2013-02-20

Applicant: Michael D. BULATOWICZ

Inventor： Michael D. BULATOWICZ

IPC: G01P21/00 ,  G06F17/10

CPC classification number: G01P21/00 ,  G01P15/125 ,  G01P15/131 ,  G01P2015/0828 ,  G06F17/10

Abstract: One embodiment of the invention includes an accelerometer sensor system. The system includes a sensor comprising a proofmass and electrodes and being configured to generate acceleration feedback signals based on control signals applied to the electrodes in response to an input acceleration. The system also includes an acceleration component configured to measure the input acceleration based on the acceleration feedback signals. The system further includes an acceleration controller configured to generate the control signals to define a first scale-factor range associated with the sensor and to define a second scale-factor range associated with the sensor. The control system includes a calibration component configured to calibrate the accelerometer sensor system with respect to range-dependent bias error based on a difference between the measured input acceleration at each of the first scale-factor range and the second scale-factor range.

Abstract translation: 本发明的一个实施例包括加速度传感器系统。 该系统包括传感器，其包括校样和电极，并被配置为基于响应于输入加速度施加到电极的控制信号产生加速度反馈信号。 该系统还包括加速度分量，其被配置为基于加速度反馈信号来测量输入加速度。 该系统还包括加速度控制器，其被配置为产生控制信号以限定与传感器相关联的第一比例因子范围并且定义与传感器相关联的第二比例因子范围。 控制系统包括校准组件，其被配置为基于在第一比例因子范围和第二比例因子范围中的每个测量的输入加速度之间的差异来相对于基于范围的偏置误差校准加速度计传感器系统。

公开(公告)号：US20140013845A1

公开(公告)日：2014-01-16

申请号：US13549012

申请日：2012-07-13

Applicant: Robert E. Stewart ,  Michael D. Bulatowicz

Inventor： Robert E. Stewart ,  Michael D. Bulatowicz

IPC: G01C19/56

CPC classification number: G01C19/5712

Abstract: A resonator gyroscope includes a central post; a resonator coupled to the central post; and a diaphragm coupled to the resonator, wherein at least one of the diaphragm and the central post accommodates rotation of the resonator in an axis in a plane of the diaphragm.

Abstract translation: 谐振器陀螺仪包括中心柱; 耦合到中心柱的谐振器; 以及耦合到所述谐振器的隔膜，其中所述隔膜和所述中心柱中的至少一个容纳所述谐振器在所述隔膜的平面中的轴线中的旋转。

公开(公告)号：US20090309668A1

公开(公告)日：2009-12-17

申请号：US12481709

申请日：2009-06-10

Applicant: Michael D. Bulatowicz ,  Michael S. Larsen

Inventor： Michael D. Bulatowicz ,  Michael S. Larsen

IPC: G04F5/14 ,  H03B17/00

CPC classification number: G04F5/14

Abstract: One embodiment of the invention includes an alkali beam cell system that comprises a reversible alkali beam cell. The reversible alkali beam cell includes a first chamber configured as a reservoir chamber that is configured to evaporate an alkali metal during a first time period and as a detection chamber that is configured to collect the evaporated alkali metal during a second time period. The reversible alkali beam cell also includes a second chamber configured as the detection chamber during the first time period and as the reservoir chamber during the second time period. The reversible alkali beam cell further includes an aperture interconnecting the first and second chambers and through which the alkali metal is allowed to diffuse.

Abstract translation: 本发明的一个实施例包括一个包括可逆碱性束电池的碱性束电池系统。 可逆碱束电池包括构造为储存室的第一室，其构造成在第一时间段期间蒸发碱金属，并且被配置为在第二时间段内收集蒸发的碱金属的检测室。 可逆碱束电池还包括在第一时间段期间被配置为检测室的第二室和在第二时间段期间的储存室。 可逆碱束电池还包括互连第一和第二腔室的孔，并允许碱金属扩散。

公开(公告)号：US12209866B2

公开(公告)日：2025-01-28

申请号：US18074668

申请日：2022-12-05

Applicant: Gordon Barbour Morrison ,  Michael D. Bulatowicz ,  Michael S. Larsen ,  Bob Buckley

Inventor： Gordon Barbour Morrison ,  Michael D. Bulatowicz ,  Michael S. Larsen ,  Bob Buckley

IPC: G01G3/00 ,  G01C19/62

Abstract: One example includes an atomic sensor system. The system includes an optical source configured to provide an optical beam and a plurality of sensor cell systems. Each of the sensor cell systems includes sensing media enclosed in a volume therein. The system also includes optics configured to provide the optical beam to each of the sensor cell systems to provide interaction of the optical beam with the vapor in each of the respective sensor cell systems. The optical beam exiting each of the sensor cell systems is a respective detection beam. The system further includes a detection system comprising at least one configured to receive the detection beam from each of the sensor cell systems and to determine a measurable parameter based on an optical characteristic associated with the detection beam from each of the sensor cell systems.

公开(公告)号：US12188784B2

公开(公告)日：2025-01-07

申请号：US17552909

申请日：2021-12-16

Applicant: Eric A. Imhof ,  Thomas G. Spence ,  Steven Ryan Jefferts ,  Michael D. Bulatowicz

Inventor： Eric A. Imhof ,  Thomas G. Spence ,  Steven Ryan Jefferts ,  Michael D. Bulatowicz

IPC: G01D11/24 ,  G04F5/14

Abstract: One embodiment includes a vapor cell for an atomic physics-based sensor system. The vapor cell includes a cell wall formed from an approximately transparent material. The cell wall can enclose an alkali metal vapor and can include an inner surface and an outer surface. The vapor cell can also include at least one structural feature provided on at least one of the inner surface and the outer surface of the cell wall and extending along a portion of the respective at least one of the inner surface and the outer surface.

公开(公告)号：US20190049485A1

公开(公告)日：2019-02-14

申请号：US16155529

申请日：2018-10-09

Applicant: ROBERT E. STEWART ,  MICHAEL D. BULATOWICZ

Inventor： ROBERT E. STEWART ,  MICHAEL D. BULATOWICZ

IPC: G01P21/00 ,  G01P15/13 ,  G01P15/125 ,  G01P15/08

Abstract: One embodiment includes a method for dynamic self-calibration of an accelerometer system. The method includes forcing a proof-mass associated with a sensor of the accelerometer system in a first direction to a first predetermined position and obtaining a first measurement associated with the sensor in the first predetermined position via at least one force/detection element of the sensor. The method also includes forcing the proof-mass to a second predetermined position and obtaining a second measurement associated with the sensor in the second predetermined position via the at least one force/detection element of the sensor. The method further includes calibrating the accelerometer system based on the first and second measurements.