发明名称 |
PULSE WIDTH MODULATION OF CONTINUUM SOURCES FOR DETERMINATION OF CHEMICAL COMPOSITION |
摘要 |
A light source and a method for its use in an optical sensor are provided, the light source including a resistively heated element. The light source includes a power circuit configured to provide a pulse width modulated voltage to the resistively heated element, the pulse width modulated voltage including: a duty cycle with a first voltage; and a pulse period including a period with a second voltage, wherein: the duty cycle, the first voltage, and the pulse period are selected so that the resistively heated element is heated to a first temperature; and the first temperature is selected to emit black body radiation in a continuum spectral range. Also provided is an optical sensor for determining a chemical composition including a light source as above. |
申请公布号 |
EP2914988(A4) |
申请公布日期 |
2017.01.11 |
申请号 |
EP20120890899 |
申请日期 |
2012.12.28 |
申请人 |
Halliburton Energy Services, Inc. |
发明人 |
PELLETIER, Michael;SOLTMANN, William;PERKINS, David L.;JONES, Christopher Michael |
分类号 |
G01V8/00;E21B47/10;E21B49/08;G01J3/02;G01J3/10;G01J3/427;G01J3/433;G01J5/52;G01N21/00;G01N21/25;G01N21/31;G01N21/47;G01V8/10;H03K7/08;H05B37/02 |
主分类号 |
G01V8/00 |
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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