专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明授权

US11874343B2 Single point gradiometer 有权
公开(公告)号：US11874343B2
公开(公告)日：2024-01-16
申请号：US18112229
申请日：2023-02-21
申请人： Trustees of Boston University
发明人： Joshua Javor , David Bishop , David Campbell , Matthias Imboden
IPC分类号： G01R33/022 , G01R33/038 , G01R33/00
CPC分类号： G01R33/022 , G01R33/0052 , G01R33/038 , G01R33/0385
摘要： A gradiometer includes a at least one magnet attached to a beam. The magnet moves in response to a magnetic force. A sensing element is configured to measure movement or deflection of the beam or magnet. The gradiometer is configured to determine a gradient of a magnetic field acting on the first magnet based on movement of the magnet. The gradiometer can further measure higher order gradients.

2. 发明授权

US11828827B2 Magnetic sensor sensitivity matching calibration 有权
公开(公告)号：US11828827B2
公开(公告)日：2023-11-28
申请号：US18057324
申请日：2022-11-21
申请人： Melexis Technologies NV
发明人： Samuel Huber Lindenberger , Javier Bilbao De Mendizabal
IPC分类号： G01R35/00 , G01R33/022 , G01R33/09
CPC分类号： G01R35/005 , G01R33/022
摘要： A magnetic sensor device comprises a substrate. A first magnetic sensor, a second magnetic sensor, and one or more inductors are disposed over the substrate and are controlled by a magnetic sensor controller having a control circuit. The control circuit is adapted for controlling the first magnetic sensor to measure magnetic fields under presence of a first set of magnetic fields, and for controlling the second magnetic sensor to measure magnetic fields under presence of a second set of magnetic fields generated by the inductors. The control circuit calculates a relative sensitivity matching value that converts magnetic field values measured by the second magnetic sensor to a comparable magnetic field value measured by the first magnetic sensor or vice versa. The control circuit is further adapted for correcting a measurement by the second magnetic sensor using the relative sensitivity matching value to produce a corrected measurement, and for calculating a magnetic field gradient by combining a measurement by the first magnetic sensor with the corrected measurement.

3. 发明授权

US11693067B2 Magnetic sensor system 有权
公开(公告)号：US11693067B2
公开(公告)日：2023-07-04
申请号：US17564733
申请日：2021-12-29
申请人： TDK CORPORATION
发明人： Shunji Saruki , Shinichirou Mochizuki
IPC分类号： G01R33/00 , G01R33/09 , G01R33/022
CPC分类号： G01R33/091 , G01R33/022
摘要： A magnetic sensor system includes two magnetic sensors that detect components in two directions of an external magnetic field, an additional magnetic field generation section, and a signal processing circuit. The additional magnetic field generation section is capable of generating two additional magnetic fields for use in measuring the sensitivities of the two magnetic sensors. The signal processing circuit includes a sensitivity measurement processing section and a detection signal correction processing section. The sensitivity measurement processing section measures the sensitivities based on data concerning changes in the detection signals of the two magnetic sensors when the additional magnetic field generation section is controlled to generate two additional magnetic fields. The detection signal correction processing section performs processing for reducing change components attributable to the two additional magnetic fields on the detection signals of the two magnetic sensors.

4. 发明授权

US10838100B2 Apparatus and method for data acquisition 有权
公开(公告)号：US10838100B2
公开(公告)日：2020-11-17
申请号：US16138712
申请日：2018-09-21
申请人： VALE S.A.
发明人： Benjamin David Polzer , Peter Whyte Walker , Gordon Fox West , Peter Anthony Hurley , Robert Leslie Scott Hogg
IPC分类号： G01V3/17 , G01V3/15 , G01R33/022 , G01V3/165 , F16M11/14 , F16M13/02 , G01V3/38 , B64C39/02 , B64D3/00
CPC分类号： G01V3/17 , F16M11/14 , F16M13/02 , G01R33/022 , G01V3/15 , G01V3/165 , G01V3/38 , B64C39/02 , B64D3/00
摘要： Aspects of the disclosure may reduce motion noise by mounting vector component sensors on a bottom-weighted instrument platform that is supported with a spherical bearing. An apparatus for data acquisition is provided. The apparatus includes a base assembly, a spherical bearing mounted to the base assembly, and an instrument platform having at least one vector component sensor fixed thereto. The instrument platform is mounted on and supported by the spherical bearing. The spherical bearing couples the instrument platform to the base assembly and allows free angular rotation of the instrument platform, within a tilt angle range. The instrument platform is bottom weighted in that it has a center of mass disposed below its center of rotation. The apparatus may include a controller that receives and/or stores data from the at least one sensor.

5. 发明申请

US20180246143A1 NANOSCALE SCANNING SENSORS 审中-公开
公开(公告)号：US20180246143A1
公开(公告)日：2018-08-30
申请号：US15965175
申请日：2018-04-27
申请人： PRESIDENT AND FELLOWS OF HARVARD COLLEGE
发明人： Michael S. GRINOLDS , Sungkun HONG , Patrick MALETINSKY , Amir YACOBY
IPC分类号： G01Q70/14 , G01N21/64 , G01R33/60 , G01R33/12 , G01Q60/54 , G01Q60/38
CPC分类号： G01Q70/14 , G01N21/645 , G01N24/10 , G01N2201/10 , G01Q30/025 , G01Q60/08 , G01Q60/38 , G01Q60/54 , G01R33/022 , G01R33/032 , G01R33/1284 , G01R33/323 , G01R33/60
摘要： A sensing probe may be formed of a diamond material comprising one or more spin defects that are configured to emit fluorescent light and are located no more than 50 nm from a sensing surface of the sensing probe. The sensing probe may include an optical outcoupling structure formed by the diamond material and configured to optically guide the fluorescent light toward an output end of the optical outcoupling structure. An optical detector may detect the fluorescent light that is emitted from the spin defects and that exits through the output end of the optical outcoupling structure after being optically guided therethrough. A mounting system may hold the sensing probe and control a distance between the sensing surface of the sensing probe and a surface of a sample while permitting relative motion between the sensing surface and the sample surface.

6. 发明申请

US20180180671A1 POWER DRIVE TRANSISTOR RESONANCE SENSOR 审中-公开
公开(公告)号：US20180180671A1
公开(公告)日：2018-06-28
申请号：US15736608
申请日：2016-06-10
申请人： Sikorsky Aircraft Corporation
发明人： Patrick W. Kalgren , Kenneth Gravenstede , Evan Grundman , John Gorton
IPC分类号： G01R31/315 , G01R31/28
CPC分类号： G01R31/315 , G01R31/2837 , G01R31/42 , G01R33/022
摘要： A Transistor Resonant Characteristic Sensor (TReCS) includes a sensing element positioned along electronic equipment so that the sensing element is electromagnetically coupled to the electronic equipment. The sensing element includes a coil. The sensing element is configured to detect magnetic oscillations associated with a characteristic signal generated by the electronic equipment. The TReCS sensor further includes an evaluation circuit connected to the sensing element for monitoring health state of the electronic equipment. The evaluation circuit includes one or more processing elements configured to diagnose health state of the electronic equipment based on extracted baseband information associated with the characteristic signal.

7. 发明申请

US20170205473A1 MAGNETORESISTIVE Z-AXIS GRADIENT SENSOR CHIP 审中-公开
公开(公告)号：US20170205473A1
公开(公告)日：2017-07-20
申请号：US15315329
申请日：2015-05-14
申请人： MultiDimension Technology Co., Ltd.
发明人： James Geza Deak , Zhimin Zhou
IPC分类号： G01R33/022 , G01R33/00 , G01R33/09
CPC分类号： G01R33/022 , G01R33/0011 , G01R33/09
摘要： A magnetoresistive Z-axis gradient sensor chip, which is used to detect the gradient in the XY plane of a Z-axis magnetic field component generated by a magnetic medium; the sensor chip comprises a Si substrate, a collection of two or two groups of flux guide devices separated a distance Lg and an arrangement of electrically interconnected magnetoresistive sensor units. The magnetoresistive sensor units are located on the Si substrate and located above or below the edge of the flux guide devices as well; the flux guide devices convert the component of the Z-axis magnetic field into the direction parallel to the surface of the Si substrate along the sensing axis direction of the magnetoresistive sensing units. The magnetoresistive sensor units are electrically interconnected into a half bridge or a full bridge gradiometer arrangement, wherein the opposite bridge arms are separated by distance Lg. This sensor chip can be utilized with a PCB or in combination with a PCB plus back-bias magnet with casing. The sensor measures the Z-axis magnetic field gradient by using magnetoresistive sensors with in-plane sensing axes. This sensor chip has several advantages relative to a Hall Effect sensor device, including smaller size, lower power consumption, and higher magnetic field sensitivity.

8. 发明申请

US20170038323A1 WIRELESS SENSOR AND METHOD OF INTERROGATING THEREOF 有权
标题翻译：无线传感器及其干扰方法
公开(公告)号：US20170038323A1
公开(公告)日：2017-02-09
申请号：US14816646
申请日：2015-08-03
申请人： General Electric Company
发明人： Daniel White Sexton
IPC分类号： G01N27/02
CPC分类号： G01N27/023 , G01D21/00 , G01R33/00 , G01R33/022 , G06K19/0717
摘要： A wireless sensor array communication system includes a plurality of wireless sensors each including a resonant circuit that is excited by an RF pulse so as to provide a resonant energy proportional to a measurand being monitored. A transceiver of an interrogator system transmits RF pulses to each of the sensors to excite the resonant circuits therein and receives RF signals transmitted from each of the sensors that are indicative of the resonant energy provided by the resonant circuit. A magnet-gradient coil arrangement of the interrogator system generates a magnetic field and selectively applies magnetic field gradients along a number of axes, such that a frequency and phase of the resonant energy provided by the resonant circuit of each wireless sensor is altered responsive thereto, with the altered frequency and phase of the resonant energy being a function of a location of the respective wireless sensor within the magnetic field.
摘要翻译：无线传感器阵列通信系统包括多个无线传感器，每个无线传感器包括由RF脉冲激励的谐振电路，以便提供与被监测的被测量成比例的谐振能量。询问器系统的收发器将RF脉冲发送到每个传感器以激励其中的谐振电路，并且接收从表示由谐振电路提供的谐振能量的每个传感器发射的RF信号。询问器系统的磁体 - 梯度线圈装置产生磁场并选择性地沿着多个轴施加磁场梯度，使得由每个无线传感器的谐振电路提供的谐振能量的频率和相位响应于此而改变，谐振能量的改变的频率和相位是相应无线传感器在磁场内的位置的函数。

9. 发明申请

US20170023501A1 Resonant Electromagnetic Sensor and Inspection System 审中-公开
标题翻译：共振电磁传感器和检测系统
公开(公告)号：US20170023501A1
公开(公告)日：2017-01-26
申请号：US15284338
申请日：2016-10-03
申请人： Kevin D. McGushion
发明人： Kevin D. McGushion
IPC分类号： G01N24/08
CPC分类号： G01N24/08 , G01N27/72 , G01N29/225 , G01N29/275 , G01R33/022 , G01R33/028 , G01R33/1253
摘要： The present device relates to a sensor capable of detecting changes in the electromagnetic field it generates when in proximity to either conductive or nonconductive materials. This occurs by way of oscillating a transmit coil with an electro motive force at a resonant frequency thus creating an electromagnetic field. The magnetic field passes through a target of either conductive or nonconductive material and is then intercepted by a receive coil which likewise oscillates at a resonant frequency, which when in proximity to the transmit coil and transmit coils resonant frequency produces an enhanced signal by way of the interaction of the respective resonant frequencies and receive coil output.
摘要翻译：本装置涉及一种能够检测当接近导电材料或非导电材料时产生的电磁场变化的传感器。这通过以共振频率的电动机振荡发射线圈而发生，从而产生电磁场。磁场通过导电材料或非导电材料的靶，然后由接收线圈截取，该接收线圈同样以谐振频率振荡，当谐振频率接近发射线圈和发射线圈时，谐振频率通过各谐振频率和接收线圈输出的相互作用。

10. 发明授权

US09453891B2 Magnetic field detection device 有权
标题翻译：磁场检测装置
公开(公告)号：US09453891B2
公开(公告)日：2016-09-27
申请号：US15046505
申请日：2016-02-18
申请人： OLYMPUS CORPORATION
发明人： Yusuke Suzuki
IPC分类号： G01R33/06 , G01R33/36 , G01R33/022 , G01R33/20
CPC分类号： G01R33/063 , G01R33/022 , G01R33/20 , G01R33/3628
摘要： A magnetic field detection device includes: a resonance circuit having a winding coil for converting a magnetic field signal of an alternating magnetic field into a voltage signal and having a capacitor connected in parallel to the coil; an element connected in series to an output stage of the resonance circuit; and a low noise amplifier connected to an output stage of the element. The element has a reactance whose sign is opposite to that of an imaginary part of an impedance of the resonance circuit at a detected frequency of the alternating magnetic field. An absolute value of a combined impedance of the resonance circuit and the element is smaller than an internal resistance of the coil.
摘要翻译：磁场检测装置包括：谐振电路，具有用于将交变磁场的磁场信号转换为电压信号并具有与线圈并联连接的电容器的绕组线圈; 与谐振电路的输出级串联连接的元件; 以及连接到该元件的输出级的低噪声放大器。在交变磁场的检测频率下，元件具有符号与谐振电路的阻抗的虚部的符号相反的电抗。谐振电路和元件的组合阻抗的绝对值小于线圈的内部电阻。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式