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    • 7. 发明授权
    • Insulation measuring apparatus
    • 绝缘测量仪
    • US08368406B2
    • 2013-02-05
    • US12889654
    • 2010-09-24
    • Yoshihiro Kawamura
    • Yoshihiro Kawamura
    • G01R31/02
    • G01R27/025G01R31/025
    • An insulation measuring apparatus having a measuring circuit including a first capacitor; a control unit that reads a voltage set on the first capacitor to decide an insulation state of a power supply, and control a path configuration of the measuring circuit; a switching section provided in a path located between the measuring circuit and the control unit; and a second capacitor provided between a ground and a path located between the switching section and the control unit. The control unit controls the path configuration of the measuring circuit, by turning ON the switching section to set a voltage corresponding to the voltage that is set on the first capacitor on the second capacitor, and then by turning OFF the switching section to read the voltage set on the second capacitor and to discharge an electric charge corresponding to the voltage being set on the first capacitor.
    • 一种绝缘测量装置,具有包括第一电容器的测量电路; 读取在第一电容器上设定的电压以决定电源的绝缘状态并控制测量电路的路径配置的控制单元; 切换部,设置在位于测量电路和控制单元之间的路径中; 以及第二电容器,设置在地与位于开关部和控制单元之间的路径之间。 控制单元控制测量电路的路径配置,通过接通开关部分来设置与设置在第二电容器上的第一电容器上的电压相对应的电压,然后通过关断开关部分来读取电压 设置在第二电容器上,并且对与设置在第一电容器上的电压相对应的电荷放电。
    • 8. 发明授权
    • Method and apparatus of voltage measurement using flying capacitor and switching circuits
    • 使用飞跨电容器和开关电路的电压测量方法和装置
    • US07365528B2
    • 2008-04-29
    • US11540534
    • 2006-10-02
    • Yoshihiro Kawamura
    • Yoshihiro Kawamura
    • G01R1/02G01R7/00G01R19/25
    • G01R19/2509
    • The present invention is to provide a method and apparatus of voltage measurement with a high resolution. An apparatus of voltage measurement includes: a buffer circuit for separating a voltage between terminals of a capacitor or an equivalent voltage into a first voltage region corresponding to a full scale of an analog/digital (A/D) converter and a second voltage region corresponding to a voltage exceeding the full scale of the A/D converter when the voltage between the terminals of the capacitor charged or the equivalent voltage is higher than the full scale of the A/D converter; the A/D converters corresponding to the first and second voltage regions for converting the voltages of the respective regions from analog to digital values; and a voltage measurement device for evaluating a measured voltage value from the digital values and calculating the voltage of the voltage supply.
    • 本发明是提供一种具有高分辨率的电压测量方法和装置。 电压测量装置包括:缓冲电路,用于将电容器的端子或等效电压之间的电压分离成对应于模拟/数字(A / D)转换器的满量程的第一电压区域和对应于第二电压区域的第二电压区域 当充电的电容器的端子或等效电压之间的电压高于A / D转换器的满量程时,超过A / D转换器的满量程的电压; 所述A / D转换器对应于所述第一和第二电压区域,用于将各个区域的电压从模拟值转换为数字值; 以及电压测量装置,用于根据数字值评估测量的电压值并计算电压源的电压。
    • 9. 发明申请
    • Method of voltage measurement and apparatus for same
    • 电压测量方法及其设备
    • US20070024270A1
    • 2007-02-01
    • US11446374
    • 2006-06-05
    • Yoshihiro Kawamura
    • Yoshihiro Kawamura
    • G01R5/14
    • G01R31/362G01R19/2503G01R31/3648G01R31/3658
    • The present invention is to provide a method of voltage measurement and an apparatus for the same having an improved accuracy and low cost. The apparatus for voltage measurement of a voltage supply includes: a charging unit for charging a capacitor for a prescribed period of time of charging; a measuring unit for measuring a charge of the capacitor charged during a prescribed period of time of charge measurement; and a microcomputer for calculating a voltage of the voltage supply from a measurement value of the charge, the microcomputer including: a correction value calculating program for applying a voltage of a correction measurement voltage supply to the measuring unit, measuring the voltage of the correction measurement voltage supply during the prescribed period of time of charging, and calculating a correction value from a difference between a measurement value and a theoretical value of the voltage of the correction measurement voltage supply, and a voltage measurement program for subtracting the correction value calculated at the correction value calculating program from the measurement value of the charge during the prescribed period of time of charge measurement and for calculating the voltage of the voltage supply.
    • 本发明是提供一种电压测量方法及其设备具有改进的精度和低成本的装置。 用于电压源的电压测量的装置包括:充电单元,用于在规定的充电时段内对电容器充电; 测量单元,用于测量在电荷测量的规定时间段期间充电的电容器的电荷; 以及微计算机,用于从所述电荷的测量值计算所述电压源的电压,所述微型计算机包括:校正值计算程序,用于向所述测量单元施加校正测量电压源的电压,测量所述校正测量的电压 在规定的充电时间内提供电压,并根据测量值和校正测量电压源的电压的理论值之间的差计算校正值;以及电压测量程序,用于减去在 校正值计算程序,根据电荷测量的规定时间段内的电荷测量值,以及计算电压源的电压。