发明名称 |
Solid state pump control and protection system |
摘要 |
A pump control and protection system comprised of an analog module and a digital module. The analog module includes a synchronous phase detector, a pressure transducer and an over voltage/under voltage circuit. The synchronous phase detector determines the phase angle between a current signal supplied to a water pump and a voltage signal supplied to the pump. The output of the phase detector is directed to a programmable array logic device in the digital module and used to activate a solid state relay that controls the power supplied to the pump. The water pressure in the system is displayed on a digital display.
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申请公布号 |
US5577890(A) |
申请公布日期 |
1996.11.26 |
申请号 |
US19940205038 |
申请日期 |
1994.03.01 |
申请人 |
TRILOGY CONTROLS, INC. |
发明人 |
NIELSEN, CARL J.;TROCCOLI, JOSEPH E. |
分类号 |
F04B49/06;(IPC1-7):F04B49/06 |
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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