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    • 9. 发明授权
    • Gas flow measuring apparatus
    • 气体流量计
    • US4399698A
    • 1983-08-23
    • US264208
    • 1981-05-15
    • Syunichiro HiromasaNorio OmoriYutaka KawashimaYukio Muto
    • Syunichiro HiromasaNorio OmoriYutaka KawashimaYukio Muto
    • G01F1/68G01F1/692G01F1/698G01M15/00
    • G01F1/698G01F1/692
    • A gas flow measuring apparatus is provided with an air flow sensor mounted in a suction duct upstream from a throttle valve and exposed to the air flow through the suction duct. The air flow sensor includes a ceramic flat plate mounted in the suction duct so that the main surfaces of the ceramic flat plate are parallel with the air flow. First and second temperature-dependent resistor coatings are formed on the main surfaces of the ceramic flat plate so that the first resistor coating and the second resistor coating are respectively formed on the downstream and upstream end portions of the ceramic flat plate by printing or evaporating a platinum. An electric heater coating is formed between the first and second resistor coatings but spaced therefrom to affect only the first resistor coating, and the heater coating is also formed by printing or evaporating a platinum. The first and second resistor coatings and the electric heater are connected to a measuring circuit to determine the amount of air flow depending on a difference between output signals of the first and second resistor coatings.
    • 气流测量装置设置有安装在节气门上游的吸入管道中的空气流量传感器,并暴露于通过抽吸管道的空气流。 气流传感器包括安装在吸入管道中的陶瓷平板,使得陶瓷平板的主表面与空气流平行。 第一和第二温度依赖性电阻器涂层形成在陶瓷平板的主表面上,使得第一电阻涂层和第二电阻涂层分别通过印刷或蒸发形成在陶瓷平板的下游和上游端部 铂。 电加热器涂层形成在第一和第二电阻器涂层之间,但与之隔开,仅影响第一电阻器涂层,加热器涂层也通过印刷或蒸发铂而形成。 第一和第二电阻器涂层和电加热器连接到测量电路,以根据第一和第二电阻器涂层的输出信号之间的差异来确定空气流量。
    • 10. 发明授权
    • Automatic adjustment circuit for amplitude of differential signal
    • 差分信号振幅自动调整电路
    • US07831223B2
    • 2010-11-09
    • US11848918
    • 2007-08-31
    • Yutaka Kawashima
    • Yutaka Kawashima
    • H04B17/00
    • H04L1/0002
    • An automatic adjustment circuit for amplitude of differential signal has a differential signal transceiver that transmits differential signals, an amplitude setting register in which plural setting values for setting amplitude of the differential signals are stored, an amplitude control circuit that controls the amplitude of the differential signals, a pattern generating circuit that outputs a test pattern, a multiplexer, a squelch detection receiver, a test loop-back circuit, a squelch-signal-change-detection expected-value memory that stores an expected value of a change in a squelch signal, a squelch-signal-change detection counter that counts the change in the squelch signal, a comparator that compares the expected value and a count value and outputs a difference value of the values, a comparison result memory that stores the difference value, and a controller.
    • 用于差分信号幅度的自动调节电路具有发送差分信号的差分信号收发器,其中存储用于设置差分信号幅度的多个设定值的幅度设定寄存器,控制差分信号幅度的幅度控制电路 ,输出测试图案的模式产生电路,多路复用器,静噪检测接收器,测试回路电路,静噪信号变化检测预期值存储器,其存储静噪信号中的变化的期望值 对静噪信号的变化进行了计数的静噪信号变化检测计数器,将期望值和计数值进行比较的比较器,输出该值的差分值,存储差分值的比较结果存储器和 控制器。