发明名称 |
Low voltage low current bubble detection circuit |
摘要 |
A low voltage, low current apparatus for detecting discontinuities, such as bubbles, in a fluid stream, in which a tube is placed between a transducer transmitting successive bursts of ultrasonic energy and for receiving the bursts. The receiving transducer is connected to a low current transistor amplifier circuit of a signal processing circuit which keeps an output in a first state when signals are received corresponding to the presence of a fluid and in a second state when the bursts of energy are modified by the discontinuity.
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申请公布号 |
US6515487(B1) |
申请公布日期 |
2003.02.04 |
申请号 |
US20000644789 |
申请日期 |
2000.08.23 |
申请人 |
MAGNETROL INTERNATIONAL, INC. |
发明人 |
DAWSON WILLIAM C.;PATEL MAYANK H. |
分类号 |
A61M1/36;G01N29/032;G01N29/34;(IPC1-7):G01R27/04;G01F1/20;G01N29/02;G01R23/08;H03F3/52 |
主分类号 |
A61M1/36 |
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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