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    • 9. 发明授权
    • Flow rate sensor
    • 流量传感器
    • US09026383B2
    • 2015-05-05
    • US13499239
    • 2010-09-24
    • Hiroshi TakakuraShohei YamanoHiroyuki Ebi
    • Hiroshi TakakuraShohei YamanoHiroyuki Ebi
    • G01F1/698G01F1/684
    • G01F1/698G01F1/6847
    • A flow rate sensor is disclosed, comprising a flow rate calculation part that calculates a flow rate of a fluid based on an expression using Xd/Xu that satisfies an expression at least in a certain range of the flow rate when an output of a constant temperature control circuit corresponding to an upstream resistor is defined as Vu, an output of a constant temperature control circuit corresponding to a downstream resistor is defined as Vd, and the flow rate is defined as and the flow rate calculation part corrects the zero point output as being an output when the flow rate is zero by using a zero offset function (OFS) defined as a function of Vu+VdXd/Xu.
    • 公开了一种流量传感器,包括:流量计算部,其基于使用Xd / Xu的表达式计算流体的流量,所述表达在满足表达式时至少在一定的流量范围内,当恒定温度的输出 将与上游电阻对应的控制电路定义为Vu,将与下游电阻对应的恒温控制电路的输出定义为Vd,将流量定义为流量计算部,将零点输出校正为 通过使用定义为Vu + VdXd / Xu的函数的零偏移函数(OFS),流量为零时的输出。
    • 10. 发明授权
    • Flow rate measuring device and flow rate controller
    • 流量测量装置和流量控制器
    • US08746057B2
    • 2014-06-10
    • US13525116
    • 2012-06-15
    • Tadahiro YasudaHiroshi Takakura
    • Tadahiro YasudaHiroshi Takakura
    • G01F1/68
    • G05D7/0635G01F1/36G01F1/50Y10T137/7722
    • A flow rate measuring device includes a fluid resistance member through which measurement target fluid flows; an upstream side pressure sensor configured to measure pressure on an upstream side of the fluid resistance member from a change of electrical resistance of a resistive element attached to a pressure sensitive surface onto which the target fluid is introduced, and also to measure a temperature of the pressure sensitive surface from a temperature-dependent change of the electrical resistance of the resistive element; a temperature sensor to measure a temperature of the target fluid flowing through the fluid resistance member; and a flow rate calculation part that calculates a flow rate of the target fluid based on the pressure measured by the upstream side pressure sensor, pressure-flow rate characteristics of the fluid resistance member, the upstream side pressure sensor temperature, and the target fluid temperature in the fluid resistance member.
    • 流量测量装置包括测量对象流体流过的流体阻力构件; 上游侧压力传感器,被配置为从附着到所述目标流体的压敏表面上的电阻元件的电阻的变化来测量所述流体阻力构件的上游侧的压力,并且还测量所述流体阻力构件的温度 来自电阻元件的电阻的温度依赖性变化的压敏表面; 温度传感器,用于测量流过所述流体阻力构件的目标流体的温度; 以及流量计算部,其基于由上游侧压力传感器测量的压力,流体阻力构件的压力流量特性,上游侧压力传感器温度和目标流体温度来计算目标流体的流量 在流体阻力构件中。