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    • 2. 发明授权
    • Voltage detecting apparatus
    • 电压检测装置
    • US08248744B2
    • 2012-08-21
    • US12123717
    • 2008-05-20
    • Yoshihiro KawamuraToshiaki TakeshitaMitsuteru Yano
    • Yoshihiro KawamuraToshiaki TakeshitaMitsuteru Yano
    • H02H3/00
    • G01R19/0084
    • The present invention is to provide a voltage detecting apparatus, which can downsize a circuit, reduce costs and detect a voltage with high accuracy, the voltage detecting apparatus to detect a voltage by using a flying capacitor. Furthermore, the voltage detecting apparatus does not halt whole functions. The first zener diode is connected to the first resistor R1, which divides a voltage stored with the capacitor as a flying capacitor into a detectable voltage at a microcomputer, in parallel. Furthermore, the voltage detecting apparatus prevents more than a zener voltage of the first zener diode from applying to the input of the microcomputer.
    • 本发明提供一种电压检测装置,其可以使电路小型化,降低成本并高精度地检测电压,电压检测装置通过使用飞行电容器来检测电压。 此外,电压检测装置不会停止整个功能。 第一齐纳二极管连接到第一电阻器R1,其将存储有电容器的电压作为飞行电容器并联在微计算机上的可检测电压中。 此外,电压检测装置防止第一齐纳二极管的齐纳电压超过微计算机的输入。
    • 5. 发明申请
    • INSULATION MEASUREMENT METHOD AND INSULATION MEASUREMENT APPARATUS
    • 绝缘测量方法和绝缘测量装置
    • US20090289639A1
    • 2009-11-26
    • US12470142
    • 2009-05-21
    • Yoshihiro KawamuraMitsuteru YanoToshihiro SoneToshiaki Takeshita
    • Yoshihiro KawamuraMitsuteru YanoToshihiro SoneToshiaki Takeshita
    • G01R27/26
    • G01R27/025G01R31/086G01R31/1272
    • An insulation measurement method in an insulation measurement apparatus of a flying capacitor type, includes a first power supply charge voltage measurement process of applying a voltage of a power supply to a flying capacitor for a first charge time period a first grounding resistor measuring voltage measurement process of applying the voltage of the power supply to the flying capacitor via an insulation resistor on one electrode side of the power supply, a second power supply charge voltage measurement process of applying the voltage of the power supply to the flying capacitor for a second charge time period, a second grounding resistor measuring voltage measurement process of applying the voltage of the power supply to the flying capacitor via an insulation resistor on the other electrode side of the power supply, and an insulation resistor conversion process of obtaining a value of the insulation resistor based on measurement results of the first and second charge voltage measurement processes and the first and second grounding resistor measuring voltage measurement processes and an insulation resistor conversion expression.
    • 一种飞跨电容式绝缘测量装置中的绝缘测量方法包括:第一电源充电电压测量过程,用于在第一充电时间周期内将飞溅电容器的电源电压施加到第一接地电阻器测量电压测量过程 通过所述电源的一个电极侧的绝缘电阻将所述电源的电压施加到所述飞越电容器;第二电源充电电压测量处理,将所述电源的电压施加到所述飞越电容器用于第二充电时间 周期,第二接地电阻器,测量通过电源的另一电极侧的绝缘电阻将电源的电压施加到飞跨电容器的电压测量处理,以及获得绝缘电阻值的绝缘电阻器转换处理 基于第一和第二充电电压测量的测量结果 nt处理和第一和第二接地电阻测量电压测量过程和绝缘电阻转换表达式。
    • 9. 发明授权
    • Ground fault detection device
    • 接地故障检测装置
    • US06992490B2
    • 2006-01-31
    • US10831829
    • 2004-04-26
    • Yoshikazu NomotoTakafumi TsurumiToshiaki AriyoshiMitsuteru Yano
    • Yoshikazu NomotoTakafumi TsurumiToshiaki AriyoshiMitsuteru Yano
    • G01R31/02
    • B60L3/0023B60L3/0069G01R31/024G01R31/36
    • A control section sets a positive side switching element of a positive side detection section and a negative side switching element of a negative side detection section to ON, thus outputting an ON signal. When the switching elements are set ON, a predetermined current outputted from a positive side constant current source and a negative side constant current source, or a portion of this current, flows through detection resistors. A ground fault decision section decides whether a ground fault has occurred in the positive or the negative side of a direct current power source, based upon the value of an output voltage detected by a positive side voltage detector, or upon the value of an output voltage detected by a negative side voltage detector. Ground faults are accurately detected with a simple structure.
    • 控制部将正侧检测部的正侧开关元件和负侧检测部的负侧开关元件设定为ON,从而输出ON信号。 当开关元件设置为ON时,从正侧恒流源和负侧恒流源输出的预定电流或该电流的一部分流过检测电阻器。 接地故障判定部基于正侧电压检测器检测到的输出电压的值,或根据输出电压的值来判定直流电源的正极侧或负极侧是否发生接地故障 由负侧电压检测器检测。 以简单的结构准确地检测到接地故障。