发明名称 |
LIQUID GAUGE HAVING AN OPTICAL FIBER WITH FLEXIBLE MEMBRANE ENCLOSURE |
摘要 |
A fiber optic fuel or liquid level gauge is disclosed which determines the liquid level by measuring the amount of light loss due to evanescent transfer to the fuel or liquid. An optical fiber is supported in the fuel or liquid tank, with a first end adjacent the highest possible liquid level to be measured with a reflector at the first end. The optical fiber extends downwardly through the tank, and its second end is connected to a light source for injecting light into the fiber. The intensity of the input light is compared to the intensity of light reflected from the first fiber end, and the liquid level is calculated from the light loss. The gauge has very high reliability since it has no moving mechanical parts.
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申请公布号 |
US5077482(A) |
申请公布日期 |
1991.12.31 |
申请号 |
US19900484295 |
申请日期 |
1990.02.23 |
申请人 |
HUGHES AIRCRAFT COMPANY |
发明人 |
VALI, VICTOR;CHANG, DAVID B.;BROWNRIGG, PATRICK C. |
分类号 |
G01F23/28;G01F23/292 |
主分类号 |
G01F23/28 |
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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