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Title:
ELECTRIC DISCHARGE CHARGE AMOUNT MEASURING DEVICE
Document Type and Number:
WIPO Patent Application WO/2023/032814
Kind Code:
A1
Abstract:
[Problem] To provide a device capable of measuring an electric discharge charge amount more accurately by reducing the impact of an induced voltage. [Solution] This electric discharge charge amount measuring device comprises a detection terminal 2 which is brought into contact with a measurement target object 1, a capacitor 3 having one terminal 3a connected to the detection terminal 2 and another terminal 3b grounded, a resistor 5 connected in parallel with the capacitor 3, a voltage measuring means 4 for measuring a terminal-to-terminal voltage of the capacitor 3, a peak detecting means 6 for detecting a peak value of a voltage value measured by the voltage measuring means 4, and a converting means 7 for converting the peak value detected by the peak detecting means 6 into a charge amount, wherein: the peak detecting means 6 has a function of sampling the terminal-to-terminal voltage measured by the voltage measuring means 4 at each predetermined sampling time Δt, and identifying the maximum value of the sampled voltage value as the peak value; and a capacitance C of the condenser 3, a resistance value R of the resistor 5, and the sampling time Δt are each set so as to satisfy the relationship C×R>Δt.

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Inventors:
SUZUKI TERUO (JP)
CHOI KWANGSEOK (JP)
OSADA YUKI (JP)
MIYABAYASHI YOSHIYA (JP)
Application Number:
PCT/JP2022/032087
Publication Date:
March 09, 2023
Filing Date:
August 25, 2022
Export Citation:
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Assignee:
KASUGA DENKI INC (JP)
JAPAN ORGANIZATION OF OCCUPATIONAL HEALTH AND SAFETY (JP)
International Classes:
G01R29/24
Foreign References:
JP2016017873A2016-02-01
JP2001042644A2001-02-16
JP2007212208A2007-08-23
JPH08304500A1996-11-22
JPH10197482A1998-07-31
JP2000081468A2000-03-21
JP2008076213A2008-04-03
US5754056A1998-05-19
CN111766458A2020-10-13
Attorney, Agent or Firm:
ILINK INTERNATIONAL PATENT & TRADEMARK OFFICE (JP)
Download PDF:
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