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    • 4. 发明授权
    • Flow sensor with adjustable sensitivity
    • 流量传感器灵敏度可调
    • US4565092A
    • 1986-01-21
    • US654577
    • 1984-09-25
    • Arlon D. Kompelien
    • Arlon D. Kompelien
    • G01F1/05G01F1/20G01F1/36G01F5/00G01F1/46
    • G01F5/005G01F1/36
    • A flow sensor having adjustable sensitivity includes a differential pressure sensing element located in an internal compartment within a rotatable cylinder. The compartment is connected between diametrically opposite fluid ports on the surface of the cylinder by fluid channels. In one embodiment, the sensor is located on a diaphragm partitioning the compartment into a first and a second chamber with the sensor being responsive to a distortion of the diaphragm induced by a differential pressure. In a second embodiment, the sensor is a flow sensor and is arranged to monitor a fluid flow through the compartment induced by a differential pressure. The cylinder is rotatable on an axis at located right angles to a fluid flow thereacross whereby the ports are selectively located at a desired angle with respect to the fluid flow path. The cylinder is located within a fluid-tight housing having a fluid inlet and a fluid outlet arranged to direct a fluid being monitored by the sensor around the cylinder. An external adjusting knob is connected to the axis of the cylinder through a first fluid-tight access opening in the housing to provide a means for selectively rotating the cylinder. Electrical connections to the pressure sensing element are provided through a second fluid-tight access opening in the housing.
    • 具有可调灵敏度的流量传感器包括位于可旋转气缸内的内部隔室中的差压感测元件。 隔室通过流体通道连接在圆筒表面上的直径相对的流体端口之间。 在一个实施例中,传感器位于将隔室分隔成第一和第二室的隔膜上,传感器响应由差压引起的隔膜的变形。 在第二实施例中,传感器是流量传感器,并且被布置成监测由差压引起的通过隔室的流体流动。 圆筒可以在与其上的流体流动成直角定位的轴上旋转,由此端口相对于流体流动路径选择性地定位在期望的角度。 气缸位于具有流体入口和流体出口的流体密封壳体内,流体出口布置成将由传感器监测的流体引导到气缸周围。 外部调节旋钮通过壳体中的第一流体密封进入开口连接到气缸的轴线,以提供用于选择性地旋转气缸的装置。 通过壳体中的第二流体密封进入开口提供与压力感测元件的电连接。
    • 9. 发明授权
    • Power stealing solid state switch for supplying operating power to an
electronic control device
    • 电力窃取固态开关,用于向电子控制装置提供工作电源
    • US5903139A
    • 1999-05-11
    • US789731
    • 1997-01-27
    • Arlon D. Kompelien
    • Arlon D. Kompelien
    • H02M5/293G05F1/44
    • H02M5/293H02M2001/0006Y10T307/469
    • A power stealing circuit provides operating power for a environmental control such as a thermostatic control while controlling the current in a power supply line to a load in response to the cycling output of the environmental control. A pair of power FETs are connected to the series power terminals, and the gates are controlled by logic and phase timers. FETs are turned off at the end of a phase, while a small amount of power sufficient to operate the control and circuitry is diverted to a power storage circuit, then the FETs are turned back without substantial interruption to the load. A preferred embodiment uses a bi-directional charge pump to transfer power between low- and high-voltage power storage circuits. The circuit can operate with symmetrical or nonsymetrical AC or DC loads.
    • 电力窃取电路为环境控制(例如恒温控制)提供工作电力,同时响应于环境控制的循环输出控制向负载供电的电流的电流。 一对功率FET连接到串联电源端子,栅极由逻辑和相位定时器控制。 在相位结束时,FET被关断,而足以将控制和电路操作的少量功率转移到功率存储电路,则FET被反转而不会明显地中断负载。 优选实施例使用双向电荷泵来在低压和高压蓄电电路之间传输功率。 该电路可以使用对称或非对称的交流或直流负载进行操作。