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1. 发明申请

WO2003106931A3 DRIVE TECHNIQUES FOR A DIGITAL FLOWMETER 审中-公开
公开(公告)号：WO2003106931A3
公开(公告)日：2003-12-24
申请号：PCT/US2003/009703
申请日：2003-03-31
申请人： INVENSYS SYSTEMS, INC. , HENRY, Manus, P. , ZAMORA, Mayela, E.
发明人： HENRY, Manus, P. , ZAMORA, Mayela, E.
IPC分类号： G01F1/84
摘要： Drive techniques for a digital flowmeter are described. The drive techniques account for delays caused during digital signal processing of sensor signals that correspond to a motion of a flowtube, as well as drive signals that impart motion to the flowtube. Such delays may be caused by a variety of factors, including delays associated with analog/digital conversion of the signals and/or filtering of the signals. The techniques include open-loop techniques and closed-loop techniques, which can be used separately or together during the start-up and operation of the digital flowmeter. Startup and operational techniques for a digital flowmeter also are described. The startup and operational techniques select an optimal mode of operation for the digital flowmeter, depending on a current environment of the flowmeter, where the mode of operation might be chosen from, for example, a random sequence mode, a positive feedback mode, or a digital synthesis mode. In either the positive feedback mode or the digital synthesis mode, the digital flowmeter may revert to a previous mode to regain stable and desired oscillation of the flowtube, such as might be required during a recovery operation associated with a disturbance to an operation of the digital flowmeter.

2. 发明申请

WO2005019777A2 CORRECTING FREQUENCY IN FLOWTUBE MEASUREMENTS 审中-公开
标题翻译：校正流量测量中的频率
公开(公告)号：WO2005019777A2
公开(公告)日：2005-03-03
申请号：PCT/US2004/025916
申请日：2004-08-12
申请人： INVENSYS SYSTEMS, INC. , ZAMORA, Mayela, E. , HENRY, Manus, P.
发明人： ZAMORA, Mayela, E. , HENRY, Manus, P.
IPC分类号： G01F
CPC分类号： G01F1/8436 , G01F1/8486
摘要： Techniques are described for accurately measuring a density or other parameter of a fluid traveling through a vibratable conduit (215), using a flowmeter (200). The techniques involve obtaining measurements of a frequency of vibration of the conduit, as a function of a phase difference between two sensors measuring the vibration (1406). Using the measurements, a corrected frequency corresponding to a zero phase difference can be estimated (1408), and this corrected frequency can be used to perform density calculations (1506). These techniques remove an undesirable dependency between the frequency/phase difference variables.
摘要翻译：描述了使用流量计（200）精确测量流过可振动导管（215）的流体的密度或其他参数的技术。该技术涉及作为测量振动的两个传感器之间的相位差的函数来获得管道的振动频率的测量结果（1406）。使用这些测量结果，可以估计与零相位差相对应的校正频率（1408），并且该校正频率可以用于执行密度计算（1506）。这些技术消除了频率/相位差异变量之间的不良依赖。

3. 发明申请

WO2003106931A2 DRIVE TECHNIQUES FOR A DIGITAL FLOWMETER 审中-公开
标题翻译：数字流量计的驱动技术
公开(公告)号：WO2003106931A2
公开(公告)日：2003-12-24
申请号：PCT/US2003/009703
申请日：2003-03-31
申请人： INVENSYS SYSTEMS, INC. , HENRY, Manus, P. , ZAMORA, Mayela, E.
发明人： HENRY, Manus, P. , ZAMORA, Mayela, E.
IPC分类号： G01F
CPC分类号： G01F1/8431 , G01F1/8427 , G01F1/8436 , G01F1/8486 , G01F1/849 , G01F25/0007
摘要： Drive techniques for a digital flowmeter are described. The drive techniques account for delays caused during digital signal processing of sensor signals that correspond to a motion of a flowtube, as well as drive signals that impart motion to the flowtube. Such delays may be caused by a variety of factors, including delays associated with analog/digital conversion of the signals and/or filtering of the signals. The techniques include open-loop techniques and closed-loop techniques, which can be used separately or together during the start-up and operation of the digital flowmeter. Startup and operational techniques for a digital flowmeter also are described. The startup and operational techniques select an optimal mode of operation for the digital flowmeter, depending on a current environment of the flowmeter, where the mode of operation might be chosen from, for example, a random sequence mode, a positive feedback mode, or a digital synthesis mode. In either the positive feedback mode or the digital synthesis mode, the digital flowmeter may revert to a previous mode to regain stable and desired oscillation of the flowtube, such as might be required during a recovery operation associated with a disturbance to an operation of the digital flowmeter.
摘要翻译：描述了数字流量计的驱动技术。驱动技术解决了在对应于流量管的运动的传感器信号的数字信号处理期间引起的延迟以及向流量管施加运动的驱动信号。这种延迟可能由各种因素引起，包括与信号的模拟/数字转换相关的延迟和/或信号的滤波。这些技术包括开环技术和闭环技术，可以在数字流量计的启动和运行过程中单独使用或一起使用。还描述了数字流量计的启动和操作技术。启动和操作技术根据流量计的当前环境选择数字流量计的最佳操作模式，其中可以从例如随机序列模式，正反馈模式或数字合成模式。在正反馈模式或数字合成模式中，数字流量计可以恢复到先前的模式，以重新获得流量管的稳定和期望的振荡，例如在与数字操作的操作的干扰相关联的恢复操作期间可能需要的流量计。

4. 发明申请

WO2005019777A3 CORRECTING FREQUENCY IN FLOWTUBE MEASUREMENTS 审中-公开
标题翻译：在流量测量中校正频率
公开(公告)号：WO2005019777A3
公开(公告)日：2005-11-17
申请号：PCT/US2004025916
申请日：2004-08-12
申请人： INVENSYS SYS INC , ZAMORA MAYELA E , HENRY MANUS P
发明人： ZAMORA MAYELA E , HENRY MANUS P
IPC分类号： G01F20060101 , G01F1/58 , G01F1/84
CPC分类号： G01F1/8436 , G01F1/8486
摘要： Techniques are described for accurately measuring a density or other parameter of a fluid traveling through a vibratable conduit (215), using a flowmeter (200). The techniques involve obtaining measurements of a frequency of vibration of the conduit, as a function of a phase difference between two sensors measuring the vibration (1406). Using the measurements, a corrected frequency corresponding to a zero phase difference can be estimated (1408), and this corrected frequency can be used to perform density calculations (1506). These techniques remove an undesirable dependency between the frequency/phase difference variables.
摘要翻译：描述了使用流量计（200）精确测量行进通过可振动导管（215）的流体的密度或其它参数的技术。这些技术包括获得测量振动频率的测量值，作为测量振动的两个传感器之间的相位差的函数（1406）。使用测量，可以估计对应于零相位差的校正频率（1408），并且可以使用该校正频率来执行密度计算（1506）。这些技术消除了频率/相位差变量之间不期望的依赖性。

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