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1431 条记录 (耗时 0.029 秒)

    Instrument interfacing method and device thereof
    1.
    发明授权
    Instrument interfacing method and device thereof 有权

    公开(公告)号：US11714115B2

    公开(公告)日：2023-08-01

    申请号：US17625768

    申请日：2021-03-11

    申请人： Wei Wu

    发明人： Wei Wu ,  Yuejia Wu

    IPC分类号： G01R31/00

    CPC分类号： G01R31/001

    摘要： An instrument interface method and device. Two capacitors, one capacitor has one end as input of the device, connected to live line of power output of a LISN, and has other end as output of the device, connected to one test port of an oscilloscope; the other capacitor has one end as input of the device, connected to neutral line of the power output of the LISN, and has other end as output of the device, connected to another test port of the oscilloscope; without changing the LISN design, existing LISN products can be used for conducted emission test with oscilloscope-based time-domain EMI measurement instruments by means of the method and device. Said two capacitors have a capacity of

    Rapid antimicrobial susceptibility testing using piezoelectric sensor
    3.
    发明授权
    Rapid antimicrobial susceptibility testing using piezoelectric sensor 审中-公开

    公开(公告)号：US10670566B2

    公开(公告)日：2020-06-02

    申请号：US15777750

    申请日：2016-11-18

    申请人： Wan Y. Shih ,  Wei-Heng Shih ,  Christopher Emery ,  Xin Xu ,  Suresh Joshi ,  Wei Wu

    发明人： Wan Y. Shih ,  Wei-Heng Shih ,  Christopher Emery ,  Xin Xu ,  Suresh Joshi ,  Wei Wu

    IPC分类号： C12Q1/18 ,  G01N29/12 ,  G01N29/036 ,  G01N29/02

    摘要： A system for and method of antimicrobial susceptibility testing includes detecting a resonance peak of a sensor provided with live microbes on a surface thereof; applying a substance to the live microbes; detecting a resonance peak of said sensor after application of said substance; determining a width of a top of each of said resonance peaks before and after application of the substance from one of: (1) a phase angle versus frequency plot where the phase angle is the phase angle of the electrical impedance of said sensor. (2) a real part of a plot of an electrical impedance versus frequency of said sensor. (3) a plot of a magnitude of electrical impedance versus frequency of said sensor, and (4) a phase angle versus frequency plot where the phase angle is the phase angle between an output voltage and an input voltage of said sensor, and comparing the determined widths of tops of said resonance peaks or standard deviations of the frequency of said resonance peaks to determine antimicrobial susceptibility including the minimum inhibitory concentration (MIC).

    Method of electricity leakage detection and prevention of electrical equipment's outer surface and system thereof
    9.
    发明授权
    Method of electricity leakage detection and prevention of electrical equipment's outer surface and system thereof 有权

    公开(公告)号：US09928980B2

    公开(公告)日：2018-03-27

    申请号：US14350089

    申请日：2011-12-12

    申请人： Wei Wu

    发明人： Wei Wu

    IPC分类号： H01H47/00 ,  H02H3/14 ,  H02H3/16

    CPC分类号： H01H47/005 ,  H01H47/002 ,  H02H3/14 ,  H02H3/16 ,  H02H3/162

    摘要： Disclosed in the present invention are a method of electricity leakage detection and prevention of electrical equipment's outer surface and system thereof. The method and system are used for detecting and preventing electricity leakage of the electrical equipment's outer surface caused by defective insulation and power supply connection faults. Without in touch with the electrical equipment's outer surface, the electricity leakage of the outer surface can be detected and the connection between the electrical equipment and the power supply can be cut and an alarm is made by means of the current channel (2) formed between the electrical equipment neutral line (N′) and the electrical equipment's outer surface (G′) and the monitoring of the current value. A power supply channel (5) is set up to make sure that the electrical equipment can be normally operated via the system even in the condition of the power supply connection faults. According to the method and system, the electricity leakage of the outer surface can be correctly detected and the alarm can be made or the connection between the electrical equipment and the power supply can be cut even if the electrical equipment's outer surface is not grounded. With the advantage of simple construction and low cost, the system can be widely used.