发明名称 |
Apparatus for detecting particles in a fluid and a method for operating same |
摘要 |
In one aspect of the present invention, an apparatus for detecting particles within a fluid is disclosed. A bobbin defines a debris collection chamber. A first coil is wound in a helix about the bobbin in the proximity of the debris collection chamber, wherein the induction of the first coil is responsive to the particle accumulation within the collection chamber. A reference coil is wound in a helix about the bobbin to compensate for changing fluid temperature. An oscillator is coupled to the first and reference coils for selectively energizing the coils with an oscillating waveform at a frequency that induces eddy currents in the particles. The frequency of the oscillating waveform is indicative of the amount of accumulation of both the ferrous and nonferrous particles.
|
申请公布号 |
US5608316(A) |
申请公布日期 |
1997.03.04 |
申请号 |
US19950518478 |
申请日期 |
1995.08.21 |
申请人 |
CATERPILLAR INC. |
发明人 |
CRAYTON, JOHN W.;KRONE, JOHN J.;OLTMAN, TERRY D.;WALACAVAGE, CECILIA A. |
分类号 |
F15B21/04;G01N27/72;G01N33/28;G01V3/10;G01V3/11;(IPC1-7):G01N27/74;G01R33/12 |
主分类号 |
F15B21/04 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|