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公开(公告)号：US12119854B2
公开(公告)日：2024-10-15
申请号：US18112604
申请日：2023-02-22
CPC分类号： H04B1/1027 , G01R19/04
摘要： Systems and methods for wideband RF interference detection and suppression include an open-circuit stub, a first voltage peak detector, a second voltage peak detector, an analog-to-digital converter (ADC), and a controller. The open-circuit stub is configured to receive an input signal. The first voltage peak detector is coupled at the open end of the open-circuit stub and configured to output a first voltage signal based on a portion of the input signal. The second voltage peak detector is coupled a distance away from the open end of the open-circuit stub and configured to output a second voltage signal based on the portion of the input signal. The controller is configured to generate an output control signal operable to adjust a signal filter based on the first digital voltage signal and the second digital voltage signal to suppress the portion of the input signal.
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公开(公告)号：US20240280637A1
公开(公告)日：2024-08-22
申请号：US18413244
申请日：2024-01-16
发明人： Yuko ASANO , Yukinari Tanabe
IPC分类号： G01R31/367 , G01R19/04 , G01R19/18 , H02K11/27 , H02P27/06
CPC分类号： G01R31/367 , G01R19/04 , G01R19/18 , H02K11/27 , H02P27/06
摘要： An estimation system includes a battery, an inverter, a motor, a U-phase current sensor, and an ECU. The inverter includes U-phase upper and lower arm circuits, V-phase upper and lower arm circuits, and W-phase upper and lower arm circuits. A mode of the inverter includes a first mode in which the U-phase upper arm circuit, the V-phase lower arm circuit, and the W-phase lower arm circuit are on and a second mode in which the U-phase lower arm circuit, the V-phase upper arm circuit, and the W-phase upper arm circuit are on. The ECU performs estimation processing for estimating a current value of the battery. The estimation processing includes first processing for estimating the current value in accordance with a detection value from the U-phase current sensor when the mode of the inverter is set to the first mode or the second mode.
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公开(公告)号：US20240268480A1
公开(公告)日：2024-08-15
申请号：US18562711
申请日：2022-05-20
发明人： XINJUN LI , ZHONGLI XU , YONGHAI LI
CPC分类号： A24F40/53 , A24F40/05 , A24F40/10 , B05B17/0607 , G01R19/04
摘要： This application provides an electronic atomization apparatus and a control method. The electronic atomization apparatus includes: a liquid storage chamber; a vibrable element, configured to generate vibration to atomize a liquid substrate for generating an aerosol; and a peak voltage detection module, configured to detect a peak voltage at both terminals of the vibrable element; and a controller, configured to control vibration of the vibrable element based on the peak voltage. The foregoing electronic atomization apparatus may obtain liquid substrate supply and working parameters on the vibrable element by detecting a peak voltage at the both terminals of the vibrable element, to correspondingly adjust operation of the vibrable element to prevent the vibrable element from working when the liquid supply is inadequate or in a deviated state.
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公开(公告)号：US12034366B2
公开(公告)日：2024-07-09
申请号：US18468745
申请日：2023-09-18
发明人： Xiaolei Wang , Peng Zhu , Jianpeng Lin , Haixin Wu , Hao Sun
CPC分类号： H02M1/36 , G01R19/04 , H02M1/088 , H02M3/33576 , H02M3/33584
摘要： A startup control method for a DC/DC converter is used for starting the DC/DC converter with energy transferred from a low-voltage side to a high-voltage side, and includes: acquiring a voltage spike measurement value of a power switch at the low-voltage side; determining a duty cycle or a frequency of a driving signal according to the voltage spike measurement value and a preset voltage; and outputting the driving signal to a power switch at the high-voltage side, thereby charging a clamping capacitor of the power switch at the low-voltage side. The startup control method for a DC/DC converter of the disclosure can improve a reverse charging power of the converter to the maximum extent and reduce the time needed for charging a bus capacitor during a reverse startup process while ensuring voltage stress on the power switch not to exceed a limit.
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公开(公告)号：US11975750B2
公开(公告)日：2024-05-07
申请号：US17070693
申请日：2020-10-14
发明人： Paul D. Gies
CPC分类号： B61L23/044 , B61L1/163 , B61L1/165 , B61L1/18 , B61L1/187 , G01R19/04 , G01R25/005 , G01R19/10
摘要： A method and apparatus to detect breaks in tracks and/or detect the presence of a vehicle, such as a train, in a monitored section of the track or rail. Embodiments of the present invention measure the change in track inductance associated with a track or rail break. Electrical shunts are connected between the rails at spaced-apart intervals (for example a shunt can be placed every mile). At least two different frequencies of alternating current are generated and fed into the segments of rail (for example at or near a mid-point between the shunts). If a rail break occurs, the total inductance of the rail at that segment will change. Using two or more frequencies allows a rail break to be differentiated from environmental rail-to-rail and rail-to-earth leakage.
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公开(公告)号：US20240036087A1
公开(公告)日：2024-02-01
申请号：US17815961
申请日：2022-07-29
IPC分类号： G01R19/04
CPC分类号： G01R19/04
摘要： Embodiments of the disclosure provide a peak voltage detection circuit with reduced charge loss. A circuit structure of the disclosure includes a peak voltage detector having a first input node coupled to an input line and a second input node coupled to a first electrically actuated switch. The peak voltage detector coupling the first input node and the second input node to an output node, and a second electrically actuated switch coupling the output node of the peak voltage detector to a capacitor. The first electrically actuated switch couples the capacitor to the second input node of the peak voltage detector. The input line is coupled to a control node of the first electrically actuated switch and a control node of the second electrically actuated switch.
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公开(公告)号：US20230378949A1
公开(公告)日：2023-11-23
申请号：US18309892
申请日：2023-05-01
申请人： Rohm Co., Ltd.
发明人： Natsuki YAMAMOTO , Satoru NATE
IPC分类号： H03K5/1536 , G01R19/04 , G01R19/175
CPC分类号： H03K5/1536 , G01R19/04 , G01R19/175
摘要： A zero-cross detection device includes: an input terminal configured to receive an input voltage via a diode from an application terminal for an alternating-current voltage relative to a reference potential; an input circuit including a resistor between the input terminal and a terminal at the reference potential; a period detection circuit configured to detect the length of the period of the alternating-current voltage based on the interval of the timings at which the input voltage exceeds a threshold voltage; a peak detection circuit configured to detect the peak timing at which the input voltage reaches a peak in each period of the alternating-current voltage; and a zero-cross timing detection circuit configured to detect the zero-cross timing of the alternating-current voltage based on the results of detection by the period detection circuit and the peak detection circuit.
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公开(公告)号：US20230353133A1
公开(公告)日：2023-11-02
申请号：US17780567
申请日：2020-11-11
申请人： ams AG
发明人： Dalibor KOLAR
IPC分类号： H03K5/1532 , G01R19/04
CPC分类号： H03K5/1532 , G01R19/04 , H03K5/08
摘要： A peak-detector circuit may include a first input terminal for providing a first input voltage, a first rectifying element with an anode connected to the first input terminal, a first capacitor with a first electrode connected to a cathode of the first rectifying element, a first terminal coupled to the first electrode of the first capacitor, a second rectifying element with a cathode connected to the first input terminal, a second capacitor, a first switch coupling an anode of the second rectifying element to a first electrode of the second capacitor, and a second terminal coupled to the first electrode of the second capacitor.
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公开(公告)号：US20230258697A1
公开(公告)日：2023-08-17
申请号：US17953274
申请日：2022-09-26
发明人： Bing-Hung Chen
IPC分类号： G01R19/165 , G01R19/04
CPC分类号： G01R19/16585 , G01R19/04
摘要： A signal detector circuit includes a signal peak detector circuit, a reference voltage generation circuit, and a comparator circuit. The signal peak detector circuit is arranged to receive a plurality of differential voltage input signals, and generate a single-ended peak signal according to the plurality of differential voltage input signals. The reference voltage generation circuit is arranged to generate a single-ended reference voltage signal. The comparator circuit is arranged to receive the single-ended peak signal and the single-ended reference voltage signal, and compare the single-ended peak signal with the single-ended reference voltage signal to generate a signal detection result.
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公开(公告)号：US20220299546A1
公开(公告)日：2022-09-22
申请号：US17696520
申请日：2022-03-16
发明人： Yuedong Chen , Junhong Li , Jiangwei Cheng
摘要： A method for detecting a variation of input voltage. The method is generating an indication signal based on the input voltage, and comparing the input voltage with a first reference signal. The first reference signal is smaller than the indication signal, and if the input voltage is consistently smaller than the first reference signal during a first time duration from the moment when the input voltage is decreased to the first reference signal, the indication signal is decreased after the first time duration.
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