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Fiber grating temperature and humidity sensor and temperature and humidity measurement system

A temperature and humidity sensor, temperature and humidity measurement technology, which is applied in the direction of converting sensor output, using optical devices to transmit sensing components, measuring devices, etc., can solve the problems of low sensitivity and measurement accuracy, and achieve high measurement accuracy and good heat resistance. and low hygroscopicity, the effect of improving measurement accuracy

Active Publication Date: 2018-07-24
YUNNAN POWER GRID CO LTD ELECTRIC POWER RES INST
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  • Application Information

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Problems solved by technology

[0005] This application provides a fiber grating temperature and humidity sensor and a temperature and humidity measurement system to solve the problems of low sensitivity and measurement accuracy of existing fiber optic temperature and humidity sensors

Method used

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  • Fiber grating temperature and humidity sensor and temperature and humidity measurement system
  • Fiber grating temperature and humidity sensor and temperature and humidity measurement system
  • Fiber grating temperature and humidity sensor and temperature and humidity measurement system

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Embodiment Construction

[0045] In order to enable those skilled in the art to better understand the technical solutions in the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the accompanying drawings.

[0046] Such as figure 1As shown, the embodiment of the present application provides a fiber grating temperature and humidity sensor, including: a core 11, a cladding 12 and a protective sleeve 13, the cladding 12 is set outside the core 11, and the core 11 includes a first fiber The core segment 111 and the second core segment 112, the cladding 12 includes a first layer segment 121 and a second layer segment 122, the first layer segment 121 corresponds to the first core segment 111, and the second layer segment 122 corresponds to the second fiber segment The core segment 112 corresponds to;

[0047] The protective sleeve 13 is sleeved on the outside of the second layer section 122, the first...

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Abstract

The invention discloses a fiber grating temperature and humidity sensor and a temperature and humidity measurement system. The sensor comprises a fiber core, a covering and a protective sleeve, the covering sleeves the fiber core, the fiber core comprises a first fiber core segment and a second fiber core segment, and the covering comprises a first layer segment corresponding to the first fiber core segment and a second layer segment corresponding to the second fiber core segment; the protective sleeve sleeves the second layer segment, the first fiber core segment is carved with a first fibergrating, and the second fiber core segment is carved with a second fiber grating; the covering employs a cycloolefin polymer; and the protective sleeve is made of polymethyl methacrylate. The temperature and humidity measurement system comprises a light source, a collimating lens, the fiber grating temperature and humidity sensor, a photoelectric convertor and a signal processing circuit. The temperature and humidity measuring precision and sensitivity of the sensor are improved, the sensor also has advantages of anti- electromagnetic interference, high measuring precision, high response speedand lower equipment cost, and the temperature and humidity of the working environment of an optical inductor are monitored accurately.

Description

technical field [0001] The present application relates to the technical field of optical sensing and measurement, in particular to an optical fiber grating temperature and humidity sensor and a temperature and humidity measurement system. Background technique [0002] The safe and stable operation of the power system is inseparable from the corresponding measuring equipment, such as voltage transformers, current transformers, etc. Taking the voltage transformer as an example, the traditional voltage transformer generally adopts the type of capacitor voltage divider, resistance voltage divider or electromagnetic voltage transformer. Due to the limitation of the working principle, this kind of transformer usually has narrow measurement frequency band and poor insulation performance. its application in power system. The emergence and development of optical transformers have become an important way to solve this problem. Optical transformers have the characteristics of passive ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01D5/26G01D5/353
CPCG01D5/268G01D5/35316
Inventor 邢超李胜男马红升陈勇刘明群张丽周鑫何廷一
Owner YUNNAN POWER GRID CO LTD ELECTRIC POWER RES INST
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