发明名称 |
Opto-electronic instrument for remote temperature measurement |
摘要 |
An opto-electronic instrument for remote temperature measurement having a measuring probe and a remote supply processing unit connected together by at least one optical fibre. The measuring probe includes at least one polarizer and a temperature sensitive element for receiving, modifying and retransmitting a luminous signal through the fibre which signal has been received from the luminous signal generator of the remote supply processing unit, which unit also includes a variable frequency filter controlled by a ramp generator for transforming the retransmitted luminous signal into a luminous signal, the intensity of which varies sinusoidally with time, and an opto-electrical transducer able to convert this latter luminous signal into a corresponding electrical signal of sinusoidal oscillation for which signal the period of oscillation is then calculated.
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申请公布号 |
US4296318(A) |
申请公布日期 |
1981.10.20 |
申请号 |
US19790078322 |
申请日期 |
1979.09.24 |
申请人 |
C.I.S.E. CENTRO INFORMAZIONI STUDI ESPERIENZE S.P.A. |
发明人 |
MEZZETTI, SERGIO;PIZZOLATI, PIERLUIGI;SVELTO, FRANCESCO |
分类号 |
E21B47/06;E21B47/12;G01K1/02;G01K11/00;(IPC1-7):G02F1/01 |
主分类号 |
E21B47/06 |
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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