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    FLOW RATE MEASURING DEVICE
    2.
    发明公开
    FLOW RATE MEASURING DEVICE 审中-公开
    吞吐量测量装置

    公开(公告)号：EP2405242A4

    公开(公告)日：2013-07-31

    申请号：EP10748485

    申请日：2010-03-01

    申请人： PANASONIC CORP

    发明人： YOKOHATA MITSUO ,  IWAMOTO RYUJI ,  OOTANI TAKUHISA ,  UEKI KOUICHI ,  ASANO KAZUTAKA ,  MIYATA HAJIME ,  ITOU YOUICHI

    IPC分类号： G01F3/22 ,  G01F1/66

    CPC分类号： G01F1/66 ,  F23N2025/06

    摘要： The present invention provides a flow rate measuring device capable of simplifying calculation, reducing the amount of a memory required for the calculation, absorbing variations due to manual operation and depending on the state of ignition, and improving the accuracy of appliance identification by using a configuration in which the features of appliances are extracted. The flow rate measuring device is formed of a difference value conversion unit 112 for converting the difference values of the flow rate measured at constant time intervals by an ultrasonic flowmeter 104; an appliance feature extraction unit 214 for creating an appliance feature code string indicating the feature of each appliance by making comparison and judgment using the third last code, the second last code, the last code and the current code of the codes obtained at constant time intervals and by performing code deletion, etc.; and an identification unit 116 for performing appliance identification by comparing the appliance feature code string with an appliance inherent feature code string indicating the feature code string inherent in each appliance.

    ULTRASONIC FLOWMETER
    3.
    发明公开
    ULTRASONIC FLOWMETER 审中-公开

    公开(公告)号：EP2351994A4

    公开(公告)日：2017-12-27

    申请号：EP09833199

    申请日：2009-12-16

    申请人： PANASONIC CORP

    发明人： MIYATA HAJIME ,  ITOU YOUICHI

    IPC分类号： G01F1/66 ,  F15D1/02 ,  G01F1/00 ,  G01F15/00

    CPC分类号： G01F1/667 ,  F15D1/001 ,  G01F1/662 ,  G01F15/00

    摘要： An ultrasonic flowmeter that measures flow velocity of a measured fluid by propagating ultrasonic waves through a measuring flow path with a rectangular cross section through which the measured fluid flows and the measured fluid that flows through the measuring flow path. The measuring flow path is provided with partition plates so that they are in parallel with the flow direction of the measured fluid. Simultaneously, the partition plates are placed in parallel with wall surfaces such that flow velocity distribution between opposing wall surfaces of the measuring flow path is more symmetrical with respect to the center of the flow direction of the measured fluid.

    FLOWMETER
    5.
    发明公开
    FLOWMETER 有权
    流量计

    公开(公告)号：EP2249132A4

    公开(公告)日：2012-01-04

    申请号：EP09718159

    申请日：2009-03-02

    申请人： PANASONIC CORP

    发明人： MIYATA HAJIME ,  KAMON KENICHI ,  ITOU YOUICHI ,  BESSYO DAISUKE ,  IWAMOTO RYUJI

    IPC分类号： G01F3/22 ,  F17D5/06 ,  F23K5/00 ,  F23N5/18 ,  F23N5/24 ,  G01F15/06

    CPC分类号： F17D5/06 ,  F23N5/18 ,  F23N5/24 ,  F23N2025/04 ,  G01F7/005 ,  G01F15/068

    摘要： Detecting a leak, or the like, with high accuracy on the basis of pressure and a flow volume acquired during use of fluid is made possible. A volume of gas flowing through a flow path 102 is measured by a flow volume measurement unit 106, and pressure is measured by a pressure measurement unit 108. Measured flow data and measured pressure data are input to an analysis unit 112, to thus analyze following of a pressure change by a flow volume change. An amount of flow volume change responsive to an amount of pressure change of a predetermined level or more is classified into a plurality of ranges by means of a predetermined threshold value, and a following flow value change is determined on the basis of determination conditions of the respective ranges of amounts of flow volume changes.