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公开(公告)号：US11480493B2
公开(公告)日：2022-10-25
申请号：US16968763
申请日：2019-03-14
Inventor： Yuji Fujii , Takashi Kayaba , Yoshihiro Ueda , Kenji Yasuda , Taiti Gyoutoku , Hideki Kinoshita
Abstract: A gas safety device includes: flow path through which a gas flows; ultrasonic sensor for measuring a flow rate of the gas flowing through flow path; flow rate calculator that calculates a flow rate measurement data pieces from a measurement value of the flow rate measured by ultrasonic sensor; and leakage detector that detects a minor leakage of the gas. The gas safety device further includes: pulsation recognizer that recognizes that pulsation is occurring when a fluctuation in the flow rate measuring data pieces calculated by flow rate calculator is greater than or equal to a predetermined value; and pulsating flow rate corrector that corrects, when pulsation recognizer determines that the pulsation is occurring, the flow rate measurement data piece by a predetermined value. Furthermore, when pulsation recognizer determines that the pulsation is occurring, leakage detector determines whether a leakage is present using the flow rate measurement data piece corrected by pulsating flow rate corrector.
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公开(公告)号：US10451470B2
公开(公告)日：2019-10-22
申请号：US14397582
申请日：2013-05-16
Inventor： Fumikazu Shiba , Yuji Nakabayashi , Kouichi Takemura , Yuji Fujii
Abstract: A flow rate measurement device of the present invention includes a flow rate signal detection unit for detecting a flow rate signal of a fluid to be measured flowing through flow path, flow rate calculation unit for calculating a flow rate from the flow rate signal detected by the flow rate signal detection unit, and oscillation circuit for generating a reference clock. Furthermore, the flow rate measurement device includes temperature calculation unit for calculating a temperature from a frequency change resulting from a temperature change of oscillation circuit, and flow rate correction unit for correcting the flow rate calculated by the flow rate calculation unit by obtaining an offset flow rate at a desired temperature based on the temperature calculated by temperature calculation unit. Thus, accuracy of flow rate measurement can be improved.
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公开(公告)号：US09500508B2
公开(公告)日：2016-11-22
申请号：US14410937
申请日：2013-06-25
Inventor： Hirokazu Gotou , Akihisa Adachi , Yuji Fujii , Yuji Nakabayashi , Yukio Sakaguchi , Yasuharu Kawano , Aoi Watanabe
Abstract: A gas meter device of the present invention comprises plural measurement fluid passages provided in parallel between an inlet into which a fluid flows, and an outlet from which the fluid flows out; flow value measuring sections provided in the measurement fluid passages, respectively, and configured to obtain flow values of fluids flowing through the measurement fluid passages, respectively; memories configured to store coefficient data which are values corresponding to the measurement fluid passages, respectively and indicating a relation between the flow values of the fluids flowing through the measurement fluid passages, respectively, and a total flow value of the fluid flowing from the inlet to the outlet; and total flow value estimation sections configured to estimate total flow values of the fluids based on the flow values obtained by the flow value measuring sections, respectively, and the coefficient data stored in the memories. This makes it possible to reduce time required for adjustment work in manufacturing steps of the fluid meter device assembled by connecting the plural measurement fluid passages in parallel.
Abstract translation: 本发明的燃气表装置包括在流体流入的入口与流体从其流出的出口平行设置的多个测量流体通道; 分别设置在测量流体通道中的流量值测量部分，并且被配置为分别获得流过测量流体通道的流体的流量值; 存储器，被配置为分别存储与测量流体通道相对应的值的系数数据，并且分别指示流过测量流体通道的流体的流量与从入口流动的流体的总流量值 出口; 以及总流量值估计部分，被配置为分别基于由流量值测量部分获得的流量值和存储在存储器中的系数数据来估计流体的总流量值。 这使得可以减少通过并联连接多个测量流体通道而组装的流体计量装置的制造步骤中调整工作所需的时间。
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公开(公告)号：US20150253166A1
公开(公告)日：2015-09-10
申请号：US14434645
申请日：2013-10-09
Inventor： Kenji Yasuda , Akihisa Adachi , Yuji Fujii , Yuji Nakabayashi , Yukio Sakaguchi , Hirokazu Gotou , Yasuharu Kawano , Aoi Watanabe
Abstract: A flow meter device includes: an inlet portion, into which a fluid flows; an outlet portion, from which the fluid flows out; a plurality of measurement passage portions provided parallel to each other between the inlet portion and the outlet portion; and at least one flow rate measurement unit, each flow rate measurement unit being configured to measure a flow rate of the fluid that flows through a passage in a corresponding one of the measurement passage portions. Shapes of passages in the respective measurement passage portions coincide with each other. The plurality of measurement passage portions include: the one measurement passage portion(s), which is/are each provided with the flow rate measurement unit; and the other measurement passage portion(s), which is/are not provided with the flow rate measurement unit.
Abstract translation: 流量计装置包括：流体流入的入口部分; 出口部分，流体从该出口部分流出; 在所述入口部和所述出口部之间彼此平行设置的多个测量通道部; 以及至少一个流量测量单元，每个流量测量单元被配置为测量流过相应的一个测量通道部分中的通道的流体的流量。 各个测量通道部分中的通道的形状彼此重合。 多个测量通道部分包括：一个测量通道部分，其各自设有流量测量单元; 和没有设置有流量测量单元的另一个测量通道部分。
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公开(公告)号：US20150114078A1
公开(公告)日：2015-04-30
申请号：US14397582
申请日：2013-05-16
Inventor： Fumikazu Shiba , Yuji Nakabayashi , Kouichi Takemura , Yuji Fujii
IPC: G01F25/00
Abstract: A flow rate measurement device of the present invention includes a flow rate signal detection unit for detecting a flow rate signal of a fluid to be measured flowing through flow path, flow rate calculation unit for calculating a flow rate from the flow rate signal detected by the flow rate signal detection unit, and oscillation circuit for generating a reference clock. Furthermore, the flow rate measurement device includes temperature calculation unit for calculating a temperature from a frequency change resulting from a temperature change of oscillation circuit, and flow rate correction unit for correcting the flow rate calculated by the flow rate calculation unit by obtaining an offset flow rate at a desired temperature based on the temperature calculated by temperature calculation unit. Thus, accuracy of flow rate measurement can be improved.
Abstract translation: 本发明的流量测量装置包括：流量信号检测单元，用于检测流过流路的待测流体的流量信号;流量计算单元，用于根据由流量检测单元检测的流量信号计算流量; 流量信号检测单元和用于产生参考时钟的振荡电路。 此外，流量测量装置包括：温度计算单元，用于根据由振荡电路的温度变化引起的频率变化来计算温度;以及流量校正单元，用于通过获得偏移流量来校正由流量计算单元计算出的流量 基于由温度计算单元计算的温度在期望温度下进行。 因此，可以提高流量测量的精度。
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Patent Agency Ranking
公开(公告)号：US09664549B2
公开(公告)日：2017-05-30
申请号：US14410397
申请日：2013-06-25
Inventor： Yukio Sakaguchi , Akihisa Adachi , Yuji Fujii , Yuji Nakabayashi , Hirokazu Gotou , Yasuharu Kawano , Aoi Watanabe
CPC classification number: G01F7/00 , G01F1/66 , G01F1/662 , G01F3/22 , G01F5/00 , G01F15/04 , G01F15/07
Abstract: A gas meter device of the present invention includes an inlet into which a fluid flows, and an outlet from which the fluid flows out, and is configured to derive a flow value of the fluid flowing from the inlet to the outlet. The gas meter device comprises plural measurement fluid passages provided in parallel between the inlet and the outlet; flow value measuring units provided in the plural measurement fluid passages, respectively, and configured to independently measure flow values of fluids flowing through the measurement fluid passages, respectively; an average flow value calculation unit configured to derive an average flow value of the flow values measured by the flow value measuring units, respectively; and a flow value comparison unit configured to obtain index values indicating a relation between the average flow value derived by the average flow value calculation unit and the flow values measured by the flow value measuring units, and determine whether or not each of the index values is equal to or larger than a predetermined value. Thereby, the present invention can determine whether or not there is an erroneous measurement flow value from only the separate flow values independently measured in the measurement fluid passages, respectively.
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公开(公告)号：US09551603B2
公开(公告)日：2017-01-24
申请号：US14898647
申请日：2014-06-13
Inventor： Masato Satou , Hidetomo Nagahara , Yuji Fujii
IPC: G01F1/66
Abstract: An ultrasonic flow meter device comprises a fluid passage forming section including a measurement fluid passage, and an opening facing a bottom surface of the measurement fluid passage; a pair of ultrasonic transducers which transmit and receive an ultrasonic wave via the opening; a partition plate which partitions the measurement fluid passage; and an identification section provided on an end surface of the partition plate and used to identify an obverse surface and a reverse surface of the partition plate.
Abstract translation: 超声波流量计装置包括：流体通道形成部分，包括测量流体通道;以及面向测量流体通道的底表面的开口; 一对超声波换能器，通过该开口传送和接收超声波; 隔离测量流体通道的隔板; 以及识别部，其设置在所述隔板的端面上，用于识别所述隔板的正面和反面。
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公开(公告)号：US20150292926A1
公开(公告)日：2015-10-15
申请号：US14438547
申请日：2013-10-29
Inventor： Kouichi Takemura , Yuji Fujii , Yasuo Koba , Aoi Watanabe
CPC classification number: G01F1/66 , G01F1/662 , G01F1/667 , G01F15/022 , G01F15/024 , G01F25/0007
Abstract: A flow meter device includes: a first vibrator, a second vibrator, a control unit, a timekeeper, and an arithmetic operation unit. The arithmetic operation unit is configured to: determine whether or not a time difference between a propagation time in the forward direction and a propagation time in the reverse direction is less than a predetermined value; calculate a propagation time correction amount based on the time difference if it is determined that the time difference is less than the predetermined value; and calculate a flow rate of the fluid by using the propagation time correction amount.
Abstract translation: 流量计装置包括：第一振动器，第二振动器，控制单元，计时器和算术运算单元。 所述算术运算部被配置为：判定所述正向的传播时间与所述反方向的传播时间之间的时间差是否小于预定值; 如果确定时间差小于预定值，则基于时间差计算传播时间校正量; 并通过使用传播时间校正量来计算流体的流量。
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9.发明申请ULTRASONIC FLOW METER UNIT, AND MANUFACTURING METHOD OF ULTRASONIC FLOW METER UNIT 有权超声波流量计和超声波流量计单元的制造方法公开(公告)号：US20150143919A1
公开(公告)日：2015-05-28
申请号：US14404314
申请日：2013-06-04
Inventor： Makoto Nakano , Hajime Miyata , Yuji Fujii
IPC: G01F1/66
Abstract: An ultrasonic flow meter unit, mounted to a fluid passage through which a measurement target fluid flows, comprises a pair of ultrasonic transducers each including a piezoelectric substrate, and an acoustic matching member; a measuring circuit which measures a flow of a target fluid based on time for which an ultrasonic pulse propagates between the pair of ultrasonic transducers; and an insulating damping member unitarily formed to cover at least a portion of each of a portion of each of the pair of ultrasonic transducers, which portion contacts the fluid passage, the piezoelectric substrate, and the measuring circuit.
Abstract translation: 超声波流量计单元安装在测量目标流体流过的流体通道中，包括一对超声换能器，每个超声换能器包括压电基片和声匹配元件; 测量电路，其基于超声脉冲在所述一对超声换能器之间传播的时间来测量目标流体的流量; 以及绝缘阻尼构件，其一体地形成为覆盖所述一对超声波换能器中的每一个的至少一部分，该部分接触流体通道，压电基板和测量电路。
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公开(公告)号：US12013708B2
公开(公告)日：2024-06-18
申请号：US17044879
申请日：2019-05-28
Inventor： Takashi Kayaba , Yuji Fujii , Kenji Yasuda , Masanori Nakamura , Yuki Anan
CPC classification number: G05D7/0623 , G01F1/667 , G01L13/00
Abstract: A gas safety device includes: a flow path; a flow rate measurement unit for measuring a flow rate of gas in the flow path; an absolute pressure sensor inside the flow path for measuring an absolute pressure of the gas; an absolute pressure sensor outside the flow path for measuring an absolute pressure of atmospheric pressure; a gas pressure determination unit for measuring a change in gas supply pressure from the absolute pressure of the gas and the absolute pressure of atmospheric pressure measured by the absolute pressure sensor and the absolute pressure sensor, respectively; a shutoff valve for shutting off the flow path; and a control circuit for: (i) controlling the flow rate measurement unit; and (ii) causing the shutoff valve to shut off the flow path when determining an abnormality from the flow rate of the gas or the change in gas supply pressure.
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