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    • 9. 发明申请
    • STATIC CHARGE WARNING DEVICE
    • 静态充电警告装置
    • WO0058740A3
    • 2002-08-22
    • PCT/US9916923
    • 1999-07-27
    • 3M INNOVATIVE PROPERTIES CO
    • WILSON ROBERT W
    • G01R29/24G01R29/12G01R31/00
    • G01R29/12G01R31/001
    • A wearable device for alerting a user when a static electrical charge has developed on the user which exceeds a preset limit, prior to an accidental discharge of the static charge. The device includes a first conductive element in close proximity to the user and a second conductive element spaced a further distance from the user than the first conductive element. A high impedance differential amplifier provides a voltage signal proportional to the potential difference existing between the first and second conductive elements. A voltage level discriminator receives the voltage signal from the high impedance differential amplifier and triggers an alarm if the voltage signal exceeds a predetermined limit.
    • 一种穿戴式装置,用于在静电荷的意外排放之前,当超过预设极限的用户已经开发出静电电荷时,提醒用户。 该装置包括靠近使用者的第一导电元件和与第一导电元件间距离用户更远的距离的第二导电元件。 高阻抗差分放大器提供与存在于第一和第二导电元件之间的电势差成比例的电压信号。 电压电平鉴别器从高阻抗差分放大器接收电压信号,如果电压信号超过预定极限则触发报警。