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    • 8. 发明申请
    • METHOD AND SYSTEM FOR LIMITING ENERGY TO A SENSOR
    • 将能量限制在传感器上的方法和系统
    • US20110187182A1
    • 2011-08-04
    • US13008938
    • 2011-01-19
    • Howard AusterlitzRon BueterJohn O'Brien
    • Howard AusterlitzRon BueterJohn O'Brien
    • B64C99/00G05F3/02
    • H02H9/008Y10T307/492Y10T307/505Y10T307/516Y10T307/62
    • A method and system for limiting energy to a sensor and/or an environment in which the sensor is located. A high current sensor driver is powered through a resistance-capacitance (RC) circuit. In a failure mode, the RC circuit constrains output of a sensor driver to the sensor in order to limit average current applied to the sensor. In one embodiment, the capacitor is chosen so that it can provide adequate current to the sensor driver for a short period of time. The value of the resistor may be chosen to ensure that under short circuit conditions direct current (DC) is limited to a safe value. The combined values of the resistor and capacitor may be adjusted such that the capacitor can charge to a prescribed level during the interval between active pulses.
    • 一种用于将能量限制到传感器和/或传感器所位于的环境中的方法和系统。 高电流传感器驱动器通过电阻电容(RC)电路供电。 在故障模式下,RC电路将传感器驱动器的输出限制到传感器,以限制施加到传感器的平均电流。 在一个实施例中,选择电容器使得其可以在短时间段内向传感器驱动器提供足够的电流。 可以选择电阻的值,以确保在短路条件下,直流(DC)被限制在一个安全值。 可以调节电阻器和电容器的组合值,使得电容器可以在有效脉冲之间的间隔期间将电荷充电到规定的电平。