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    • 3. 发明授权
    • Gasoline dispenser leak detectors and automatic shut-off systems
    • 汽油分配器泄漏检测器和自动关闭系统
    • US5330073A
    • 1994-07-19
    • US47818
    • 1993-04-15
    • J. Randall CollinsRalph F. Cohn
    • J. Randall CollinsRalph F. Cohn
    • B67D7/08G01M3/38B67D5/14
    • B67D7/08G01M3/38
    • Methods and systems are disclosed for controlling dispensation of hydrocarbon fuels from storage tanks and the like, by employing a sensor in an environment proximal to the dispenser. The sensor preferably includes an optical waveguide having a central axis along which light can transmitted, and the waveguide is disposed in the environment, such that fuel present in the environment contacts at least a portion of the waveguide. The sensor further includes a light source for projecting light into a first end of the waveguide, and a detector for detecting the amount of light propagated through the waveguide. The sensor is electrically connected to a controller which terminates the dispensation of fuel in the event that a leak is detected by the sensor.
    • 公开了用于通过在靠近分配器的环境中使用传感器来控制来自储罐等的碳氢燃料分配的方法和系统。 该传感器优选地包括具有中心轴的光波导,光可穿过该中心轴,并且波导设置在环境中,使得存在于环境中的燃料与波导的至少一部分接触。 传感器还包括用于将光投射到波导的第一端的光源和用于检测通过波导传播的光量的检测器。 传感器电连接到控制器,该控制器在传感器检测到泄漏的情况下终止燃料分配。