-
公开(公告)号：EP2653762A1
公开(公告)日：2013-10-23
申请号：EP11849022.6
申请日：2011-12-13
CPC分类号： G05D7/0635 , F16K37/0058 , G01B11/14 , G01D5/342 , Y10T137/0318
摘要： A flow control valve includes a light emitting section (22) for emitting light; a light receiving section (24) disposed so as to face the light emitting section (22), for detecting the amount of light received from the light emitting section (22); and a valve element (10) for opening and closing a passage (20), wherein the valve element (10) or a light blocking section (12) secured to the valve element (10) moves in a transverse direction between the light emitting section (22) and the light receiving section (24) as the passage (20) is opened or closed, an amount of light received by the light receiving section (24) from the light emitting section (22) varies in accordance with the position of the valve element (10), and a position of the valve element (10) is detected based on the amount of light received by the light receiving section (24).
摘要翻译： 流量控制阀包括用于发光的发光部（22） 与所述发光部相对配置并检测从所述发光部接收到的光量的受光部。 和用于打开和关闭通道（20）的阀元件（10），其中固定到阀元件（10）的阀元件（10）或光阻挡部分（12）在横向方向上在发光部分 其特征在于，所述光接收部（24）从所述发光部（22）接收的光的量随着所述通路（20）的打开或关闭而在所述光接收部（22）和所述受光部（24） 基于受光部（24）的受光量来检测阀芯（10）的位置和阀芯（10）的位置。
-
公开(公告)号：EP2375223A1
公开(公告)日：2011-10-12
申请号：EP09837458.0
申请日：2009-12-25
CPC分类号： G01F1/667
摘要： Switching a transmitting and receiving direction of two transducers (2,3) in the forward and the reverse direction, a time differential memory part (17b) storing a propagation time differential every K times a unit measurement process being executed, the propagation time differential being a differential between a propagation time of the ultrasonic wave signal in a forward direction and in a reverse direction, a flow rate calculating part (15) calculating a flow rate of a passing fluid based on a lump sum of propagation times in both the forward and the reverse directions obtained at least every K times of a unit measurement process being executed, an estimating part (18) estimating a change in a momentary flow rate of the fluid based on the time differential obtained every K times of the unit measurement process being executed and storing thereof in a time differential memory part (17b), thus obtaining an accurate flow rate and detecting the change in the momentary flow rate.
摘要翻译： 在正向和反向切换两个换能器（2,3）的发射和接收方向，时间差分存储器部分（17b）存储传播时间差，每K次执行单位测量过程，传播时间差是 超声波信号的正向传播时间和反向传播时间之间的差;流量计算部（15），基于正向传播时间和正向传播时间两者中的传播时间总和计算通过流体的流量; 至少每K次执行单位测量处理获得的相反方向;估计部分（18），基于每执行K次单位测量处理获得的时间差估计流体的瞬时流量的变化 并将其存储在时间差分存储器部分（17b）中，从而获得精确的流量并检测瞬时流量的变化。
-
公开(公告)号：EP2101160A1
公开(公告)日：2009-09-16
申请号：EP07742552.8
申请日：2007-04-26
IPC分类号： G01F1/66
CPC分类号： G01F1/667
摘要： It is desirable that an operation of an oscillator used for measuring propagation time of ultrasonic waves in an ultrasonic flowmeter be an intermittent operation in order to achieve electric power savings. However, pulse stability of the oscillator requires time, so that there is a problem that the intermittent operation cannot be performed.
An ultrasonic flowmeter comprising an oscillator 60, and an oscillation start unit 61 for accelerating oscillation of the oscillator, constructed so that a pulse of the oscillator oscillated by the oscillation start unit 61 is used in measurement of propagation time of ultrasonic waves.摘要翻译： 希望在超声波流量计中测量超声波的传播时间的振荡器的动作为间歇动作，以实现电力节约。 然而，振荡器的脉冲稳定性需要时间，因此存在不能进行间歇操作的问题。 一种超声波流量计，包括振荡器60和用于加速振荡器的振荡的振荡开始单元61，其被构造成使得由振荡开始单元61振荡的振荡器的脉冲用于测量超声波的传播时间。
-
公开(公告)号：EP2375223B1
公开(公告)日：2020-09-30
申请号：EP09837458.0
申请日：2009-12-25
-
-
公开(公告)号：EP2653840A1
公开(公告)日：2013-10-23
申请号：EP11848264.5
申请日：2011-12-06
IPC分类号： G01F1/66
CPC分类号： G01F1/66
摘要： 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.
摘要翻译： 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开始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“t”，最终获得传播时间TO，并从起点直到 第一个计数器在终点后计数。 流量计算部使用传播时间TO来高精度地计算流量。 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。
-
公开(公告)号：EP2485015A1
公开(公告)日：2012-08-08
申请号：EP10820148.4
申请日：2010-09-30
发明人： TAKEMURA, Kouichi , SHIBA, Fumikazu
IPC分类号： G01F1/66
摘要： 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.
摘要翻译： 在本发明的流量计装置中，单位测量步骤被定义为用于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过程， 传感器（3）和时间测量装置（12）在单位测量步骤中测量正向传播时间和反向传播时间。 时间差检测装置（16）检测由时间测量装置（12）测量的正向传播时间与反向传播时间之间的差值。 确定装置（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来确定进行单位测量步骤的次数。 因此，可以实时快速确定是否存在流体流动。 可以改善响应性，使得可以切换测量方法以对应流体流动的存在/不存在。
-
-
-
-
-
-
搜索结果
7 条记录 (耗时 0.012 秒)
