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1. 发明授权

US10345332B2 Zero power sensors 有权
公开(公告)号：US10345332B2
公开(公告)日：2019-07-09
申请号：US15288843
申请日：2016-10-07
申请人： THE CHARLES STARK DRAPER LABORATORY, INC. , NORTHEASTERN UNIVERSITY
发明人： Jonathan J. Bernstein , Marc S. Weinberg , Amy Duwel , Paul A. Ward , Nicol E. McGruer , Matteo Rinaldi , Eugene H. Cook
IPC分类号： G01P15/135 , H01H1/00 , H01H35/14
摘要： An environmental physical sensor is provided that includes a power input terminal, a sensor output terminal, and a resonant switch. The resonant switch includes a mechanical element that is responsive to an environmental stimulus and is coupled to an electrical switch. The electrical switch is operable between an open position and a closed position and electrically connects the power input terminal to the sensor output terminal when in the closed position. The mechanical element is configured to intermittently actuate the electrical switch into the closed position responsive to the environmental stimulus.

2. 发明申请

US20180292470A1 MINIATURE MAGNETIC FIELD DETECTOR 审中-公开
公开(公告)号：US20180292470A1
公开(公告)日：2018-10-11
申请号：US15944234
申请日：2018-04-03
申请人： THE CHARLES STARK DRAPER LABORATORY, INC.
发明人： James A. Bickford , Stephanie Lynne Golmon , Paul A. Ward , William D. Sawyer , Marc S. Weinberg , John J. LeBlanc , Louis Kratchman , James S. Pringle, JR. , Daniel Freeman , Amy Duwel , Max Lindsay Turnquist , Ronald Steven McNabb, JR. , William A. Lenk
IPC分类号： G01R33/00 , G01R1/04 , A61B5/04 , G01R33/12
摘要： Aspects are generally directed to a compact and low-noise magnetic field detector, methods of operation, and methods of production thereof. In one example, a magnetic field detector includes a proof mass, a magnetic dipole source coupled to the proof mass, and a substrate having a substrate offset space defined therein, the proof mass being suspended above the substrate offset space. The magnetic field detector further includes a sense electrode disposed on the substrate within the substrate offset space and positioned proximate the proof mass, the sense electrode being configured to measure a change in capacitance relative to the proof mass from movement of the proof mass in response to a received magnetic field at the magnetic dipole source. The magnetic field detector includes a control circuit coupled to the sense electrode and configured to determine a characteristic of the magnetic field based on the measured change in capacitance.

3. 发明申请

US20200028509A1 RADIATION-HARD PRECISION VOLTAGE REFERENCE 审中-公开
公开(公告)号：US20200028509A1
公开(公告)日：2020-01-23
申请号：US16267861
申请日：2019-02-05
申请人： THE CHARLES STARK DRAPER LABORATORY, INC.
发明人： Paul A. Ward , James S. Pringle , Marc Steven Weinberg , Warner G. Harrison
IPC分类号： H03K19/003 , H03B5/32 , H03H9/02 , H03H9/24 , H03L7/099 , H03L1/02 , G05F3/00 , H03L5/00
摘要： Provided is a Precision Voltage Reference (PVR). In one example, the PVR includes a resonator having an oscillation frequency, the resonator including a first proof-mass, a first forcer located adjacent a first side of the first proof-mass, and a second forcer located adjacent a second side of the first proof-mass. The PVR may include control circuitry configured to generate a reference voltage based on the oscillation frequency of the resonator, at least one converter configured to receive the reference voltage from the control circuitry, provide a first bias voltage to the first forcer based on the reference voltage, provide a second bias voltage to the second forcer based on the reference voltage, and periodically alter a polarity of the first and second bias voltages to drive the oscillation frequency to match a reference frequency, and an output configured to provide the reference voltage as a voltage reference signal.

4. 发明授权

US11561094B2 Method and system for control and readout of tuning fork gyroscope 有权
公开(公告)号：US11561094B2
公开(公告)日：2023-01-24
申请号：US16654626
申请日：2019-10-16
申请人： The Charles Stark Draper Laboratory, Inc.
发明人： Paul A. Ward , Richard D. Elliott, III , Daniel Joseph Guyon
IPC分类号： G01C19/5607 , H03F1/08
摘要： A tuning fork sensor system places a controlled bias on the proof-mass drive-axis electrodes to cancel the quadrature charge. Also, its charge amplifiers employ a field-effect transistor biased slightly into the triode region so that it behaves as a very large value resistor. In addition, it uses a phase-locked loop having a special loop filter in order to optimize performance by rejecting off-frequency drive feedthrough to the motor pick-off while resulting in very low phase wander for the demodulation references.

5. 发明授权

US10859620B2 Miniature electric field detector 有权
公开(公告)号：US10859620B2
公开(公告)日：2020-12-08
申请号：US15944106
申请日：2018-04-03
申请人： THE CHARLES STARK DRAPER LABORATORY, INC.
发明人： James A. Bickford , Stephanie Lynne Golmon , Paul A. Ward , William D. Sawyer , Marc S. Weinberg , John J. LeBlanc , Louis Kratchman , James S. Pringle, Jr. , Daniel Freeman , Amy Duwel , Max Lindsay Turnquist , Ronald Steven McNabb, Jr. , William A. Lenk
IPC分类号： G01R29/12 , G01R1/04 , G01R33/12 , G01R29/08 , G01R27/26 , A61B5/04 , A61B5/0476 , G01R29/10 , A61B5/0402
摘要： Aspects are generally directed to a compact and low-noise electric field detector, methods of operation, and methods of production thereof. In one example, an electric field detector includes a proof mass, a source of concentrated charge coupled to the proof mass, and a substrate having a substrate offset space defined therein, the proof mass being suspended above the substrate offset space. The electric field detector further includes a sense electrode disposed on the substrate within the substrate offset space and proximate the proof mass, the sense electrode being configured to measure a change in capacitance relative to the proof mass from movement of the proof mass in response to a received electric field at the source of concentrated charge. The electric field detector includes a control circuit coupled to the sense electrode and configured to determine a characteristic of the electric field based on the measured change in capacitance.

6. 发明授权

US10566974B2 Radiation-hard precision voltage reference 有权
公开(公告)号：US10566974B2
公开(公告)日：2020-02-18
申请号：US16267861
申请日：2019-02-05
申请人： THE CHARLES STARK DRAPER LABORATORY, INC.
发明人： Paul A. Ward , James S. Pringle , Marc Steven Weinberg , Warner G. Harrison
IPC分类号： H03K19/003 , H03B5/32 , H03H9/02 , H03H9/24 , H03L1/02 , G05F3/00 , H03L5/00 , H03L7/099 , H03B5/36 , G01P15/125 , G01P21/00 , H01L21/26
摘要： Provided is a Precision Voltage Reference (PVR). In one example, the PVR includes a resonator having an oscillation frequency, the resonator including a first proof-mass, a first forcer located adjacent a first side of the first proof-mass, and a second forcer located adjacent a second side of the first proof-mass. The PVR may include control circuitry configured to generate a reference voltage based on the oscillation frequency of the resonator, at least one converter configured to receive the reference voltage from the control circuitry, provide a first bias voltage to the first forcer based on the reference voltage, provide a second bias voltage to the second forcer based on the reference voltage, and periodically alter a polarity of the first and second bias voltages to drive the oscillation frequency to match a reference frequency, and an output configured to provide the reference voltage as a voltage reference signal.

7. 发明授权

US10200036B1 Radiation-hard precision voltage reference 有权
公开(公告)号：US10200036B1
公开(公告)日：2019-02-05
申请号：US15175884
申请日：2016-06-07
申请人： THE CHARLES STARK DRAPER LABORATORY, INC.
发明人： Paul A. Ward , James S. Pringle , Marc S. Weinberg , Warner G. Harrison
IPC分类号： H03K19/003 , H03B5/32 , H03H9/02 , H03H9/24 , H03L7/099 , H03L1/02
摘要： Provided is a Precision Voltage Reference (PVR). In one example, the PVR includes a resonator having an oscillation frequency, the resonator including a first proof-mass, a first forcer located adjacent a first side of the first proof-mass, and a second forcer located adjacent a second side of the first proof-mass. The PVR may include control circuitry configured to generate a reference voltage based on the oscillation frequency of the resonator, at least one converter configured to receive the reference voltage from the control circuitry, provide a first bias voltage to the first forcer based on the reference voltage, provide a second bias voltage to the second forcer based on the reference voltage, and periodically alter a polarity of the first and second bias voltages to drive the oscillation frequency to match a reference frequency, and an output configured to provide the reference voltage as a voltage reference signal.

8. 发明授权

US09224435B2 Radiation-hard precision voltage reference 有权
标题翻译：辐射硬精密电压基准
公开(公告)号：US09224435B2
公开(公告)日：2015-12-29
申请号：US13973143
申请日：2013-08-22
申请人： THE CHARLES STARK DRAPER LABORATORY, INC.
发明人： Paul A. Ward , James S. Pringle , Marc S. Weinberg
IPC分类号： H03B5/30 , H03B5/36 , G11C5/14 , G11C5/00 , G11C7/04
CPC分类号： G11C5/147 , G11C5/005 , G11C7/04 , H03B5/30 , H03B5/36
摘要： According to one aspect, embodiments herein provide a PVR comprising a resonator having an oscillation frequency, the resonator comprising at least one proof-mass, a mechanical reference, at least one drive plate located adjacent a first side of the at least one proof-mass, and at least one sense plate located adjacent a second side of the at least one proof-mass, a voltage source coupled to the drive and sense plates, a reference oscillator configured to provide a reference signal having a reference frequency to the voltage source; and an output, wherein the voltage source is configured to provide a bias voltage signal to the at least one drive and at least one sense plates of the resonator to drive the oscillation frequency of the resonator to match the reference frequency, and wherein the bias voltage signal is also provided to the output of the PVR as a voltage reference signal.
摘要翻译：根据一个方面，本文的实施例提供了一种包括具有振荡频率的谐振器的PVR，所述谐振器包括至少一个校验块，机械参考，至少一个驱动板，其邻近所述至少一个校准质量块的第一侧以及至少一个位于所述至少一个校验块的第二侧附近的检测板，耦合到所述驱动和检测板的电压源，被配置为向所述电压源提供具有参考频率的参考信号的参考振荡器; 以及输出，其中所述电压源被配置为向所述至少一个驱动器和所述谐振器的至少一个感测板提供偏置电压信号以驱动所述谐振器的振荡频率以匹配所述参考频率，并且其中所述偏置电压信号也作为电压参考信号提供给PVR的输出。

9. 发明授权

US11327102B2 Miniature electric field detector 有权
公开(公告)号：US11327102B2
公开(公告)日：2022-05-10
申请号：US17001899
申请日：2020-08-25
申请人： THE CHARLES STARK DRAPER LABORATORY, INC.
发明人： James A. Bickford , Stephanie Lynne Golmon , Paul A. Ward , William D. Sawyer , Marc Steven Weinberg , John J. Le Blanc , Louis Kratchman , James S. Pringle, Jr. , Daniel K. Freeman , Amy Duwel , Max Lindsay Turnquist , Ronald Steven McNabb, Jr. , William A. Lenk
IPC分类号： G01R29/12 , G01R1/04 , G01R33/12 , G01R29/08 , G01R27/26 , G01R29/10 , A61B5/24 , A61B5/369 , A61B5/318
摘要： Aspects are generally directed to a compact and low-noise electric field detector, methods of operation, and methods of production thereof. In one example, an electric field detector includes a proof mass, a source of concentrated charge coupled to the proof mass, and a substrate having a substrate offset space defined therein, the proof mass being suspended above the substrate offset space. The electric field detector further includes a sense electrode disposed on the substrate within the substrate offset space and proximate the proof mass, the sense electrode being configured to measure a change in capacitance relative to the proof mass from movement of the proof mass in response to a received electric field at the source of concentrated charge. The electric field detector includes a control circuit coupled to the sense electrode and configured to determine a characteristic of the electric field based on the measured change in capacitance.

10. 发明申请

US20170102263A1 ZERO POWER SENSORS 审中-公开
公开(公告)号：US20170102263A1
公开(公告)日：2017-04-13
申请号：US15288843
申请日：2016-10-07
申请人： THE CHARLES STARK DRAPER LABORATORY, INC. , NORTHEASTERN UNIVERSITY
发明人： Jonathan J. Bernstein , Marc S. Weinberg , Amy Duwel , Paul A. Ward , Nicol E. McGruer , Matteo Rinaldi , Eugene H. Cook
IPC分类号： G01H13/00 , H01H9/54
CPC分类号： G01P15/135 , H01H1/0036 , H01H35/144 , H01H2001/0063 , H01H2001/0078 , H01H2001/0084
摘要： An environmental physical sensor is provided that includes a power input terminal, a sensor output terminal, and a resonant switch. The resonant switch includes a mechanical element that is responsive to an environmental stimulus and is coupled to an electrical switch. The electrical switch is operable between an open position and a closed position and electrically connects the power input terminal to the sensor output terminal when in the closed position. The mechanical element is configured to intermittently actuate the electrical switch into the closed position responsive to the environmental stimulus.

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