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    • 5. 发明授权
    • Ultrasonic flow rate measurement device having inlet side flow rectification part and outlet side coupling part
    • 超声波流量测量装置具有入口侧流量整流部分和出口侧耦合部分
    • US08984960B2
    • 2015-03-24
    • US13821915
    • 2011-11-02
    • Yuji FujiiYukinori OzakiMasato SatouHirokazu Gotou
    • Yuji FujiiYukinori OzakiMasato SatouHirokazu Gotou
    • G01F1/66G01F15/18
    • G01F1/662G01F15/185
    • Ultrasonic flow rate measurement device includes measurement flow path in which a fluid to be measured flows, and a pair of ultrasonic vibrators that are disposed in directions such that a propagation path of an ultrasonic wave forms a V-shape relative to measurement flow path. Moreover, the device includes measurement circuit which measures a flow rate of the fluid to be measured by measuring a propagation time of the ultrasonic wave between the pair of ultrasonic vibrators, and inlet-side rectification part which is disposed, in the inlet side of measurement flow path, to stabilize the flow of the fluid to be measured. Furthermore, the device includes outlet-side coupling part which is disposed in the outlet side of measurement flow path, and signal lead-out part which outputs a flow rate value measured with measurement circuit.
    • 超声波流量测量装置包括要测量的流体流动的测量流动路径,以及一对超声波振动器,其布置在使得超声波的传播路径相对于测量流路形成V形的方向上。 此外,该装置包括测量电路,其通过测量在一对超声波振动器之间的超声波的传播时间和设置在测量入口侧的入口侧整流部来测量待测量的流体的流量 流动路径,以稳定要测量的流体的流动。 此外,该装置包括设置在测量流路的出口侧的出口侧联接部和输出利用测量电路测量的流量值的信号导出部。
    • 9. 发明授权
    • Flow rate measuring device
    • 流量测量装置
    • US08671775B2
    • 2014-03-18
    • US13516588
    • 2010-12-14
    • Hirokazu GotouAoi WatanabeYuji FujiiKouichi TakemuraYuji Nakabayashi
    • Hirokazu GotouAoi WatanabeYuji FujiiKouichi TakemuraYuji Nakabayashi
    • G01F1/66
    • G01F1/66
    • When a flow rate is equal to or more than a reference flow rate, a reference voltage is changed to a level capable of measuring stably to thereby realize the improvement of measurement accuracy at the time of a large amount of flow rate. A flow rate determination means compares a flow rate calculated by a flow rate calculation means with the reference flow rate. When the calculated flow rate is larger than the reference flow rate, the reference voltage set by a reference voltage setting means is changed, whereby the zero cross point can be detected stably at the portion where the degree of the influence of the change in the amplitude of the received signal is small. Thus, it is possible to provide a flow rate measuring device capable of measuring a flow rate stably with high accuracy even when a fluid flow is disturbed due to a large amount of flow rate.
    • 当流量等于或大于参考流量时,将参考电压变为能够稳定测量的水平,从而在大量流量时实现提高测量精度。 流量确定装置将由流量计算装置计算的流量与参考流量进行比较。 当计算出的流量大于参考流量时,由参考电压设定装置设定的参考电压发生变化,从而能够在振幅变化的影响程度的部分稳定地检测零交叉点 的接收信号很小。 因此,可以提供一种流量测量装置,即使由于流量大而扰动流体流动,也能够以高精度稳定地测量流量。