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公开(公告)号：US20180081020A1
公开(公告)日：2018-03-22
申请号：US15824944
申请日：2017-11-28
发明人： Stevan POLAK
CPC分类号： G01R35/005 , G01R29/0814 , G01R35/00
摘要： A detection apparatus with a self-test is presented. A detection apparatus such as a cable locator has an array of sensors in the form of ferrite antennas to detect an electromagnetic field produced by an object such as a buried cable. The signals are amplified, digitized and fed to a processing unit that outputs a detection signal to a display to indicate the detection of a cable. A programmable signal generator outputs a self-test signal via a voltage-current converter that is used to check the balance between the sensors. The self-test signal is directly coupled into each of the sensors through a wired connection and the processing unit uses the self-test signal to accurately determine the magnitude and phase balance of the sensors. The magnitude and phase data may be used to calibrate the instrument, apply data corrections or flag errors.
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公开(公告)号：US20180061206A1
公开(公告)日：2018-03-01
申请号：US15247398
申请日：2016-08-25
发明人： Ulrich Johannes Baur , Franz Jost
CPC分类号： G08B21/182 , G01K3/04 , G01K7/36 , G01K15/007 , G01R33/09 , G01R35/00 , G08B29/02
摘要： Sensor devices and corresponding methods are provided where a quantity is measured and monitored over time. The quantity may be related to a lifetime of the sensor device.
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公开(公告)号：US20180059146A1
公开(公告)日：2018-03-01
申请号：US15299286
申请日：2016-10-20
发明人： Magne H. Nerheim , Valerie Renee Barry Barber-Axthelm , Eric Heindel Goodchild , Siddharth Heroor
CPC分类号： F41H13/0012 , F41H13/0025 , G01R15/16 , G01R15/165 , G01R17/02 , G01R31/3191 , G01R31/385 , G01R35/00 , G01R35/005
摘要： Systems and methods for calibrating a conducted electrical weapon (“CEW”) to provide a predetermined amount of current for each pulse of the stimulus signal. Providing the predetermined amount of current, close thereto, increases the effectiveness of the stimulus signal in impeding locomotion of a human or animal target. The calibration process enables a CEW to calibrate the amount of charge in a pulse of the stimulus signal in the environmental conditions where the tester operates and also in the field where the environmental conditions may be different from the environmental conditions during calibration.
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公开(公告)号：US09903932B2
公开(公告)日：2018-02-27
申请号：US14961788
申请日：2015-12-07
发明人： Martin Leibfritz
IPC分类号： G01R35/00 , G01R27/28 , G01R31/319 , G01R27/00
CPC分类号： G01R35/005 , G01R27/00 , G01R27/28 , G01R31/3191 , G01R35/00
摘要： A calibration apparatus, for calibration of a measurement device, is provided. The calibration apparatus includes a calibration device configured to calibrate the measurement device. The calibration device also includes a verificationH device configured to verify the calibration of the measurement device. The calibration device also includes a switch configured to switch between a connection of the measurement device to the calibration device and a connection of the measurement device to the verification device.
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公开(公告)号：US09869744B2
公开(公告)日：2018-01-16
申请号：US14625458
申请日：2015-02-18
发明人： Stevan Polak
CPC分类号： G01R35/005 , G01R29/0814 , G01R35/00
摘要： A detection apparatus with a self-test is presented. A detection apparatus such as a cable locator has an array of sensors in the form of ferrite antennas to detect an electromagnetic field produced by an object such as a buried cable. The signals are amplified, digitized and fed to a processing unit that outputs a detection signal to a display to indicate the detection of a cable. A programmable signal generator outputs a self-test signal via a voltage-current converter that is used to check the balance between the sensors. The self-test signal is directly coupled into each of the sensors through a wired connection and the processing unit uses the self-test signal to accurately determine the magnitude and phase balance of the sensors. The magnitude and phase data may be used to calibrate the instrument, apply data corrections or flag errors.
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公开(公告)号：US20180011140A1
公开(公告)日：2018-01-11
申请号：US15710136
申请日：2017-09-20
发明人： Virag V. Chaware , Aaron Cook , Craig S. Petrie
CPC分类号： G01R31/2884 , G01D5/145 , G01D5/2448 , G01D5/2449 , G01R15/20 , G01R31/2829 , G01R33/0035 , G01R33/0041 , G01R33/07 , G01R33/09 , G01R35/00
摘要： A magnetic field sensor comprises at least one magnetic field sensing element configured to generate a measured magnetic field signal responsive to an external magnetic field; a diagnostic circuit configured to generate a diagnostic signal, wherein the diagnostic signal is not dependent on a measured magnetic field; a signal path comprising an amplifier and an analog-to-digital converter for processing the measured magnetic field signal to generate a sensor output signal indicative of the external magnetic field during a measured time period and for processing the diagnostic signal during a diagnostic time period; and a switch coupled to receive the measured magnetic field signal and the diagnostic signal and direct the measured magnetic field signal to the signal path during the measured time period and direct the diagnostic signal to the signal path during the diagnostic time period.
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公开(公告)号：US09866137B2
公开(公告)日：2018-01-09
申请号：US14693742
申请日：2015-04-22
申请人： LSIS CO., LTD.
发明人： Yong Kil Choi
CPC分类号： H02M5/458 , G01R15/14 , G01R31/027 , G01R35/00
摘要： A deviation compensation method of a potential transformer is provided. The deviation compensation method includes: providing first to Nth potential transformers to be installed at different locations in a high voltage direct current (HVDC) transmission system; supplying a first voltage to the first to Nth potential transformers provided; measuring voltage values output through the first to Nth transformers by the first voltage supplied; determining whether there is a deviation between the measured voltage values; and determining compensation values for correcting the measured voltage values to the same voltage value when there is the deviation.
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28.发明授权公开(公告)号：US09864014B2
公开(公告)日：2018-01-09
申请号：US14853886
申请日：2015-09-14
申请人： A123 Systems, LLC
发明人： Paul W. Firehammer , John H. Floros
CPC分类号： G01R31/3658 , G01R31/362 , G01R31/3675 , G01R35/00
摘要： Systems and methods for assessing voltage threshold detection circuitry of individual battery cells within a battery pack supplying power to a vehicle are disclosed. One example system comprises, a plurality of battery cells within a battery pack, a plurality of voltage threshold detecting circuits detecting voltage of the plurality of battery cells, a voltage of a first battery cell of the plurality of battery cells coupled to a first voltage threshold detecting circuit of the plurality of voltage threshold detecting circuits, and a network that selectively couples a second battery cell to the first voltage detecting circuit while the first battery cell is coupled to the first voltage detecting circuit.
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公开(公告)号：US09863997B2
公开(公告)日：2018-01-09
申请号：US14744683
申请日：2015-06-19
发明人： Venkat Poluru , Mahadevanna Basavaraj Shreshthi , Thappeta Peddaiah , Zhenning Liu , Sundeep Vanka
CPC分类号： G01R31/08 , G01N27/046 , G01R31/088 , G01R35/00
摘要： Devices, methods, and systems for localizing a fault on a live cable are described herein. One system includes a wire fault localizer configured to receive current information from a location where direct current is applied to a cable comprising a number of loads, receive additional current information from at least two additional locations on the cable, wherein one of the at least two additional locations is on a source side of the cable and one of the at least two additional locations is on a load side of the cable, determine a fault resistance of the cable based on the received current information and received additional current information, and determine a fault distance on the cable based on the fault resistance.
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公开(公告)号：US20180006398A1
公开(公告)日：2018-01-04
申请号：US15591007
申请日：2017-05-09
摘要： Calibration devices, systems, and methods for push-on RF connectors are described. A male calibration connector can include a removable detent portion. With the removable detent portion removed, the male calibration connector can connect to a female calibration standard during a calibration process. With the removable detent portion installed, the male calibration connector can connect to a female push on connectors. Female calibration connectors and male calibration standards are also described.
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