发明名称 |
METHODS AND SYSTEMS FOR DETECTING DEVIATION OF A PROCESS VARIABLE FROM EXPECTED VALUES |
摘要 |
<p>In methods and systems that may facilitate detecting abnormal operation in a process plant, values of a process variable are analyzed to determine whether they significantly deviate from expected values. If there is a significant deviation, an indicator may be generated. Analyzing the process variable may include, for example, utilizing a plurality of thresholds determined based on statistics of the process variable. Analyzing the process variable may also include, for example, determining whether a first number of values of the process variable are in a first region, and whether a second number of values are in a second region.</p> |
申请公布号 |
WO2008014341(A1) |
申请公布日期 |
2008.01.31 |
申请号 |
WO2007US74355 |
申请日期 |
2007.07.25 |
申请人 |
FISHER-ROSEMOUNT SYSTEMS, INC.;MILLER, JOHN, P.;KANT, RAVI |
发明人 |
MILLER, JOHN, P.;KANT, RAVI |
分类号 |
G05B13/00 |
主分类号 |
G05B13/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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