发明名称 |
Apparatus and method for detecting malfunctions in high-pressure fluid pumps |
摘要 |
A fluid pump system includes a pump having a plurality of cylinders, each having an outlet port coupled to a high-pressure manifold. A pressure transducer is coupled to the manifold and configured to convert pressure levels of fluid in the manifold to a voltage signal at an output of the transducer. The system further includes a digitizer configured to convert the voltage signal from the transducer to a digital signal at a digitizer output, such that when a value of the voltage signal is less than a selected reference voltage a first digital value is produced, and when the voltage level exceeds the selected reference voltage a second digital value is produced. A diagnostic circuit having an input coupled to the digitizer output is configured to detect malfunctions of the pump based upon characteristics of the digital signal.
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申请公布号 |
US6970793(B2) |
申请公布日期 |
2005.11.29 |
申请号 |
US20030361975 |
申请日期 |
2003.02.10 |
申请人 |
FLOW INTERNATIONAL CORPORATION |
发明人 |
PEARSON LARRY G.;TANUMA AKI;WAKEFIELD CHARLES M. |
分类号 |
F04B49/06;F04B51/00;G05B23/02;G06F19/00;(IPC1-7):G06F19/00 |
主分类号 |
F04B49/06 |
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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