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公开(公告)号：US11291150B2
公开(公告)日：2022-03-29
申请号：US16904078
申请日：2020-06-17
申请人： Robert Carl Shields
发明人： Robert Carl Shields
摘要： An apparatus and method for determining whether a conductive ring is attached to an electrically conductive shaft. The body of the apparatus includes an electrical contact and at least one magnet in a magnet recess. The at least one magnet may include a first and second conductive region, where the first conductive region is a fixed, first radial distance from a center point of the inner cavity and the second conductive region is a second radial distance from the center point of the inner cavity. A shaft recess of the conductive shaft aligns with the magnet recess when the conductive shaft is inserted into the inner cavity and an electric circuit detects whether a metal ring is secured around the conductive shaft in response to simultaneous contact between: the metal ring and the at least one magnet and the conductive shaft and the electrical contact.
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公开(公告)号：US11275123B2
公开(公告)日：2022-03-15
申请号：US16104805
申请日：2018-08-17
申请人： Landis+Gyr LLC
发明人： David Stenberg , Robert Monroe
IPC分类号： G01R31/42 , G01R22/06 , G01R31/54 , G01R19/175
摘要： A method identifies a duration of power interruptions in an electrical monitoring system. The method includes receiving, with an external monitoring system, a load profile from an electric meter that includes at least one of an accumulated frequency measurement and an accumulated number of zero crossing events that the electric meter records in an AC power signal during a predetermined monitoring period, and identifying a total duration of at least one power interruption during the predetermined monitoring period based on at least one of a deviation of the accumulated frequency measurement in the load profile from a predetermined accumulated frequency value or a deviation of the accumulated number of zero crossing events in the load profile from a predetermined number of zero crossing events during the predetermined monitoring period.
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公开(公告)号：US11255901B2
公开(公告)日：2022-02-22
申请号：US16734624
申请日：2020-01-06
发明人： Anant Shankar Kamath
IPC分类号： G01R31/00 , G01R31/28 , G01R31/52 , G01R31/54 , H03K17/795
摘要： An optocoupler is placed in series between the field ground pin of digital input circuitry and the field ground of an industrial controller. A capacitor to field ground is provided for each digital input. A resistor is provided to the input pin of the digital input circuitry. To detect a broken wire a test pulse is provided to the optocoupler connected in the ground path. This test pulse isolates the digital input circuitry from field ground. As current is always being provided from the field when the wire is not broken, the capacitor connected between the input and ground charges. After the test pulse has completed, the output signal of the digital input circuitry is examined. If the level indicates the input is high, the wire is not broken. If, however, the output remains low indicating that the input is low, the wire has broken.
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公开(公告)号：US11249144B2
公开(公告)日：2022-02-15
申请号：US16901989
申请日：2020-06-15
发明人： Xiqun Zhu , Sung Kee Baek , Robert Gregory Twiss
摘要： To reduce the rate at which a false alternating current (“AC”) loss alarming signal is generated, but at the same time detect an actual AC loss situation in a timely manner, the disclosed method describes an AC line power loss detection and active verification method. If the AC line input voltage dips momentarily lower than a standard sine wave amplitude, the AC line may not be considered lost as long as it still has energy to drive a load. The method inserts a momentary load across the AC line and compares the AC line voltage before and after the extra load is applied. If the AC power is present, this extra loading will increase the AC loading current momentarily, but will not affect the AC line voltage. However, if the AC power is lost, such loading will lower the AC line voltage, indicating a loss of power.
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公开(公告)号：US11221378B2
公开(公告)日：2022-01-11
申请号：US16782572
申请日：2020-02-05
发明人： Sudeep Pathak
IPC分类号： G01R31/54 , H02J13/00 , G05B19/04 , G05B19/042 , G01R31/327 , H02J3/00
摘要： Power systems are disclosed. The power system may include at least one computing device in communication with a control circuit including a plurality of electrical loops. The computing device(s) may be configured to test each of the plurality of electrical loops of the control circuit by performing processes including configuring a first electrical loop in a first electrical setting by adjusting an operational characteristic of one or more electrical switch(s) of the first electrical loop. The processes may also include determining an actual electrical status of the first electrical loop in the first electrical setting based on whether a relay of a return line in the first electrical loop detects a supplied voltage. Additionally, the computing device(s) may detect a fault in the first electrical loop in response to the determined actual electrical status of the first electrical loop differing from an expected electrical status of the first electrical loop.
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公开(公告)号：US20210378594A1
公开(公告)日：2021-12-09
申请号：US16896104
申请日：2020-06-08
摘要： In one embodiment, a catheter manufacturing method includes forming flexible circuit strips with respective different symbols marked thereon, each strip including at least one respective electrode, attaching one end of each of the flexible circuit strips to a catheter coupler with the flexible circuit strips being ordered around a circumference of the catheter coupler responsively to the respective symbols of respective ones of the flexible circuit strips, and forming a distal end assembly of a catheter, the distal end assembly comprising the flexible circuit strips attached to the catheter coupler.
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公开(公告)号：US11193986B2
公开(公告)日：2021-12-07
申请号：US16624173
申请日：2018-06-18
发明人： Yuki Imanaka
IPC分类号： G01R31/327 , H01M10/42 , H01M10/44 , H01M10/48 , H02J7/00 , G01R31/50 , G01R31/54 , G01R31/56 , G01R31/52 , G01R31/3842
摘要： The present invention addresses the problem of diagnosing a failure of a discharge resistor, while suppressing deterioration of discharge capacity. Disclosed is a failure diagnostic device for a discharge circuit 60 for discharging electricity from an electricity storage element 31. The discharge circuit 60 includes a resistance circuit 61 comprising a plurality of resistor blocks B connected in parallel, and each of the resistor blocks B comprises a plurality of discharge resistors Ra, Rb connected in series. During the time when electricity is being discharged from the electricity storage element 31, the failure diagnostic device diagnosis a failure of the resistance circuit 61 on the basis of a voltage or a current at a connection point P between the discharge resistors Ra, Rb.
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公开(公告)号：US20210364576A1
公开(公告)日：2021-11-25
申请号：US17326438
申请日：2021-05-21
发明人： Travis Z. Fullem
摘要： Disclosed is a method of determining electrical continuity of electrical interconnects, the method comprising the steps of measuring a first standing wave ratio value when the electrical interconnects are disconnected, measuring a second standing wave ratio value when the electrical interconnects are connected, and comparing the first standing wave ratio value to the second standing wave ratio value, wherein electrical continuity is positively determined when the second standing wave ratio value is much larger than the first standing wave ratio value.
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公开(公告)号：US20210348575A1
公开(公告)日：2021-11-11
申请号：US17277853
申请日：2019-09-06
IPC分类号： F02D41/22 , F02D41/20 , G01N27/417 , G01R31/52 , G01R31/54
摘要： A method and a device for performing diagnostics on an exhaust gas sensor includes a series circuit of a Nernst cell and a first other cell. The exhaust gas sensor has a first, a second, and a third connection where a voltage drop can be measured between the first connection and the second connection by the Nernst cell and a voltage drop between the second connection and the third connection can be measured by the first other cell. The diagnostic method has steps for feeding a direct or alternating current into the first, second, and third connections; for directly or indirectly sensing an electrical voltage potential at at least one of the first, second, and third connections; and for evaluating the voltage potential sensed to diagnose a short circuit or an open circuit in the Nernst cell and/or in the first other cell.
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公开(公告)号：US11163018B1
公开(公告)日：2021-11-02
申请号：US16498978
申请日：2019-07-31
发明人： Wei Wei , Li Ding , Fan Li , Dengping Tang , Xuxiang Wang , He Yu , Jun Li , Shuibin Xia , Xin Zheng , Li Li , Lihua Yang , Juan Qiu
摘要： Disclosed are a non-to-the-home type device and method for detecting electric meter misconnection based on the PLC communication technology and using multiple frequencies. The detection device includes a master detection device and a slave detection device. The master detection device acquires address information of different electric meters at the outlet terminals of the electric meters by using RS485 communication. The modulation circuit modulates the communication address information of different electric meters into high-frequency carrier signals of different frequencies, and sends the high-frequency carrier signals to user sides by using the PLC communication technology. A line trap is provided between the modulation circuit and the electric meters. The slave detection device has a high-frequency carrier signal detection antenna. The user side detects the high-frequency carrier signal, demodulates the high-frequency carrier signal to obtain the high-frequency carrier signal frequency and the communication address information of the electric meter corresponding to user.
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