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    • 2. 发明授权
    • Proximity detector between a metallic mass and an element to which is
applied an electric voltage
    • 金属质量体与施加有电压的元件之间的接近检测器
    • US4845476A
    • 1989-07-04
    • US132311
    • 1987-12-14
    • Gilbert RangeardJean C. GarnierJean Thomas
    • Gilbert RangeardJean C. GarnierJean Thomas
    • G01V3/08
    • G01V3/088
    • The present invention relates to a proximity detector between a metallic mass and an element subjected to an electric voltage, with an electric circuit feeding a safety device such as the coil controlling a circuit-breaker, the feed switch of a motor controlling the displacement of the mass, an auditory or visual alarm, or an emergency ground. The circuit includes an element which is normally non-conductive but made conductive when there is a potential appearing on the metallic mass to be protected, or on the antenna in which the electric circuit is fed by a DC autonomous power source. The conductibility of the element whose conductibility is modified by the variation of the electrostatic potential is controlled by the potential at an intermediate point between the metalic mass or the antenna and a pole of the DC source, with interposition between the intermediate point and the pole of a resistive or capacitive element.
    • 本发明涉及金属质量体与经受电压的元件之间的接近检测器,其中电路馈送诸如控制断路器的线圈之类的安全装置,控制电动机的位移的电动机的进给开关 大声,听觉或视觉报警,或紧急情况。 该电路包括通常不导电的元件,当在要被保护的金属质量上存在电位时,或在由DC自主电源馈送电路的天线上,该元件通常是导电的。 导电性由静电电位的变化而改变的元件的导电性由金属质量或天线与直流电源极之间的中间点的电位控制,中间点和极之间插入 电阻或电容元件。