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    • 1. 发明授权
    • Flow meter device
    • 流量计装置
    • US08972208B2
    • 2015-03-03
    • US13993406
    • 2011-12-06
    • Kouichi TakemuraFumikazu ShibaYuji Nakabayashi
    • Kouichi TakemuraFumikazu ShibaYuji Nakabayashi
    • G01F1/66G01F1/00G01B17/00
    • G01F1/66
    • In a flow meter device of the present invention, a time measuring section of the flow meter device includes a first counter which starts counting at a starting point of measurement of propagation time; and a second counter which starts counting at an end point of the measurement of the propagation time, and performs counting at a higher speed than the first counter. A propagation time TO is finally obtained by subtracting time Δt which is measured by the second counter and passes from the end point until the first counter counts up, from time T which is measured by the first counter and passes from a starting point until the first counter counts up after the end point. A flow calculating section calculates a flow with high accuracy using the propagation time TO. Thus, lower electric power consumption can be achieved, and accuracy of measurement of flow can be improved.
    • 在本发明的流量计装置中,流量计装置的时间测量部包括在传播时间的测量起点开始计数的第一计数器, 以及在传播时间的测量结束点开始计数的第二计数器,并以比第一计数器更高的速度进行计数。 通过从第一计数器测量的时间T减去由第二计数器测量并从终点通过直到第一计数器递增的时间&Dgr; t,从传送时间TO开始,直到从 第一个计数器在终点之后计数。 流量计算部使用传播时间TO计算高精度的流量。 因此,可以实现更低的电力消耗,并且可以提高流量的测量精度。
    • 2. 发明申请
    • FLOW METER DEVICE
    • 流量计装置
    • US20120185183A1
    • 2012-07-19
    • US13499258
    • 2010-09-30
    • Kouichi TakemuraFumikazu Shiba
    • Kouichi TakemuraFumikazu Shiba
    • G01F1/66G06F19/00
    • G01F1/667G01F1/66G01F1/668
    • In a flow meter device of the present invention, a unit measuring step is defined as a procedure for measuring ultrasonic sound wave propagation times by changing the direction in which an ultrasonic sound wave is transmitted and received between a first transducer (2) and a second transducer (3), and a time measuring means (12) measures a propagation time in a forward direction and a propagation time in a reverse direction in a unit measuring step. A time difference detecting means (16) detects a difference between the propagation time in the forward direction and the propagation time in the reverse direction which are measured by the time measuring means (12). A determiner means (17) determines whether or not there is a fluid flow based on the time difference. According to presence/absence of a fluid flow, the number of times the unit measuring step is performed is determined. Therefore, it can be determined whether or not there is a fluid flow quickly in real time. A responsiveness can be improved such that a measuring method can be switched to correspond to presence/absence of a fluid flow.
    • 在本发明的流量计装置中,单位测量步骤被定义为通过改变在第一换能器(2)和第二换能器(2)之间发送和接收超声波的方向来测量超声波传播时间的步骤 换能器(3)和时间测量装置(12)在单位测量步骤中测量正向方向上的传播时间和反向的传播时间。 时差检测装置(16)检测由时间测量装置(12)测量的正向传播时间和反向传播时间之间的差异。 确定器装置(17)基于时间差确定是否存在流体流动。 根据是否存在流体流动,确定进行单位测量步骤的次数。 因此,能够快速确定是否存在流体流动。 可以提高响应性,使得可以切换测量方法以对应于流体流动的存在/不存在。
    • 3. 发明申请
    • FLOW MEASUREMENT DEVICE
    • 流量测量装置
    • US20110238332A1
    • 2011-09-29
    • US12809311
    • 2008-12-12
    • Fumikazu ShibaKoichi TakemuraDaisuke Bessyo
    • Fumikazu ShibaKoichi TakemuraDaisuke Bessyo
    • G06F19/00
    • G01F1/667G01F1/662
    • To find the propagation time of an ultrasonic wave, a difference occurs between the waveforms received upstream and downstream in a portion where the reception amplitude is comparatively large and it is prevented from being detected as an error of the propagation time. A reception signal is amplified in a reception unit 35 and reception point storage units 38 store the most recent reception point data in a plurality of storage sections in order until the signal level becomes a predetermined value (Vref). An average value of the two zero crossing points before and after the signal level becomes Vref can be adopted as a reception point, the propagation time with a small error of up and down offset, etc., is measured, and it is made possible to realize power saving operation by shortening the measurement time.
    • 为了找到超声波的传播时间,在接收幅度比较大的部分中接收的上下游波形之间出现差异,并且防止被检测为传播时间的误差。 在接收单元35中放大接收信号,并且接收点存储单元38按顺序存储多个存储区中的最新接收点数据,直到信号电平变为预定值(Vref)为止。 可以采用将信号电平变为Vref之前和之后的两个过零点的平均值作为接收点,测量上下偏移误差等的传播时间,并且可以 通过缩短测量时间实现省电操作。
    • 7. 发明授权
    • Flow rate measurement apparatus
    • 流量测量装置
    • US06644129B1
    • 2003-11-11
    • US09979589
    • 2001-11-16
    • Fumikazu ShibaYuji Nakabayashi
    • Fumikazu ShibaYuji Nakabayashi
    • G01F166
    • G01F1/667G01F1/662G01F5/00
    • A flow rate measurement apparatus includes: a plurality of flow paths 13 provided between an inflow port 11 and an outflow port 12; opening/closing sections 14 for opening/closing the plurality of flow paths 13; measurement sections 15 for measuring a flow rate of fluid flowing through at least one of the plurality of flow paths 13; and a control section 17 for controlling the opening/closing sections 14 and the measurement sections 15; The control section 17 includes a gain adjustment section 16 for correcting a gain of the measurement section 15 in a flow path which is closed by the opening/closing section 14.
    • 流量测量装置包括:设置在流入口11和流出口12之间的多个流路13; 用于打开/关闭多个流路13的开闭部14; 用于测量流过多个流路13中的至少一个的流体的流量的测量部15; 以及用于控制开闭部14和测量部15的控制部17; 控制部分17包括一个增益调节部分16,用于在由开/关部分14关闭的流路中校正测量部分15的增益。
    • 9. 发明授权
    • Flow measurement device
    • 流量测量装置
    • US08903663B2
    • 2014-12-02
    • US12809311
    • 2008-12-12
    • Fumikazu ShibaKoichi TakemuraDaisuke Bessyo
    • Fumikazu ShibaKoichi TakemuraDaisuke Bessyo
    • G01F23/28G06F19/00G01F1/66
    • G01F1/667G01F1/662
    • To find the propagation time of an ultrasonic wave, a difference occurs between the waveforms received upstream and downstream in a portion where the reception amplitude is comparatively large and it is prevented from being detected as an error of the propagation time. A reception signal is amplified in a reception unit 35 and reception point storage units 38 store the most recent reception point data in a plurality of storage sections in order until the signal level becomes a predetermined value (Vref). An average value of the two zero crossing points before and after the signal level becomes Vref can be adopted as a reception point, the propagation time with a small error of up and down offset, etc., is measured, and it is made possible to realize power saving operation by shortening the measurement time.
    • 为了找到超声波的传播时间,在接收幅度比较大的部分中接收的上下游波形之间出现差异,并且防止被检测为传播时间的误差。 在接收单元35中放大接收信号,并且接收点存储单元38按顺序存储多个存储区中的最新接收点数据,直到信号电平变为预定值(Vref)为止。 可以采用将信号电平变为Vref之前和之后的两个过零点的平均值作为接收点,测量上下偏移误差等的传播时间,并且可以 通过缩短测量时间实现省电操作。
    • 10. 发明申请
    • FLOW METER DEVICE
    • 流量计装置
    • US20130269447A1
    • 2013-10-17
    • US13993406
    • 2011-12-06
    • Kouichi TakemuraFumikazu ShibaYuji Nakabayashi
    • Kouichi TakemuraFumikazu ShibaYuji Nakabayashi
    • G01F1/66
    • G01F1/66
    • In a flow meter device of the present invention, a time measuring section of the flow meter device includes a first counter which starts counting at a starting point of measurement of propagation time; and a second counter which starts counting at an end point of the measurement of the propagation time, and performs counting at a higher speed than the first counter. A propagation time TO is finally obtained by subtracting time Δt which is measured by the second counter and passes from the end point until the first counter counts up, from time T which is measured by the first counter and passes from a starting point until the first counter counts up after the end point. A flow calculating section calculates a flow with high accuracy using the propagation time TO. Thus, lower electric power consumption can be achieved, and accuracy of measurement of flow can be improved.
    • 在本发明的流量计装置中,流量计装置的时间测量部包括在传播时间的测量起点开始计数的第一计数器, 以及在传播时间的测量结束点开始计数的第二计数器,并以比第一计数器更高的速度进行计数。 通过从第一计数器测量的时间T减去由第二计数器测量并从终点传递到第一计数器向上计数的时间Deltat,最终获得传播时间TO,并从第一个计数器开始直到第一个计数器 计数器在终点后计数。 流量计算部使用传播时间TO计算高精度的流量。 因此,可以实现更低的电力消耗,并且可以提高流量的测量精度。