CN102012282A - Passive optical fiber temperature semiconductor sensor - Google Patents
Passive optical fiber temperature semiconductor sensor Download PDFInfo
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- CN102012282A CN102012282A CN2010105262888A CN201010526288A CN102012282A CN 102012282 A CN102012282 A CN 102012282A CN 2010105262888 A CN2010105262888 A CN 2010105262888A CN 201010526288 A CN201010526288 A CN 201010526288A CN 102012282 A CN102012282 A CN 102012282A
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Abstract
The invention discloses a passive optical fiber temperature semiconductor sensor and belongs to the technical field of optical fiber sensing. By tightly coating an optical fiber insulating sleeve outside an optical fiber, a plurality of composite insulating skirt borders made of silicon rubber are insulated outside the optical fiber insulating sleeve; a layer of semiconductor diaphragms are coated on an end face of the optical fiber; one end coated with the semiconductor diaphragms is inserted into a ceramic bushing; the contact part of the plug and the ceramic bushing is sealed by using an epoxy glue; and the ceramic bushing can protect the sensing head of an optical fiber contact pin and shield external interference. The device is safe, reliable and good in insulating performance, the optical fiber is easy to arrange, and the sensor is simple and firm in structure, has a certain shock resistance to the sensing head, is sealed and moisture-proof, has external electromagnetic interference resistance, and can be connected with high-voltage buses conveniently, and the like.
Description
Technical field
The present invention relates to the distributing optical fiber sensing technical field, relate in particular to the technical field that the fiber optic temperature semiconductor transducer is used in hyperbaric environment.
Background technology
For high-tension electricity devices such as Generator Set, high-voltage switch gear, high-voltage transforming transmission equipments, when the joint loose contact, contact resistance can increase, and produces the heating phenomenon in the out-of-date meeting of load current flow.Ac high-voltage electrical equipment causes the temperature of whole electrical equipment to raise because the effect of alternating electromagnetic field also can produce eddy current and magnetic hysteresis loss in ferromagnet.Temperature reaches certain height, and the metal that uses in the High-Voltage Electrical Appliances and the physical strength and the dielectric strength of insulating material are obviously descended, and the too high meeting of working temperature makes and reduces the serviceable life of High-Voltage Electrical Appliances even damage.Therefore monitor the temperature of High-Voltage Electrical Appliances, find in advance and get rid of hot stall hidden danger, the normal operation for guaranteeing High-Voltage Electrical Appliances has very important significance.
In high-voltage electric power system, carry out the wireless transmission of the employing conditional electronic temperature sensor that the insulation system of the temperature sensor of temperature detection has in the prior art; The Optical Fiber Transmission of the employing fiber-optical grating temperature sensor that has.The high voltage insulation structure of electronic temperature transmitter of the prior art exists complex structure usually, shelf depreciation is arranged, technology difficulty reaches shortcomings such as cost height greatly, therefore, from the prior art, lack a kind of instrument of precision monitor temperature fast under high voltage, big electric current and strong magnetic field circumstance that is applicable to High-Voltage Electrical Appliances at present.
Summary of the invention
In order to solve prior art problems, the invention provides a kind of good insulation preformance, simple in structure, anti-outside electromagnetic interference is strong, technology is simple, with low cost is applicable to the passive type fiber optic temperature semiconductor transducer that carries out temperature monitoring in high-voltage electric power system.
The object of the present invention is achieved like this: a kind of passive type fiber optic temperature semiconductor transducer comprises optical fiber, optical fiber insulating sheath, compound inslation shirt rim, semiconductor membrane and porcelain bushing.Its architectural feature is at outside of fiber tightly packaged fiber insulating sheath, in the compound inslation shirt rim that the external insulation of optical fiber insulating sheath has several silicon rubber to make; Fiber end face plating layer of semiconductor diaphragm will be coated with semiconductor membrane one end and insert a porcelain bushing, plug with seal with epoxy glue with the porcelain bushing contact position, porcelain bushing not only can be protected the optical fiber contact pins sensing head, again the maskable external interference.
Laser instrument sends laser and gets on the semiconductor membrane by optical fiber, refractive index-temperature physical characteristics according to optical semiconductor, the residing environment temperature of the semiconductor material of fiber end face changes and can cause that semi-conductive refractive index changes, change of refractive causes the variation of reflectivity, by the back scattering light intensity that receives, realize the temperature monitoring under the high-tension electricity environment.
The semiconductor membrane that described fiber end face plated is that a kind of light intensity varies with temperature and the temperature-sensitive material that changes; It is to cause reflection coefficient to vary with temperature and change that this ready-made semiconductor material, its function are arranged at present on the market, and its material can be semiconductor materials such as germanium, gallium arsenide, silicon.
Described optical fiber insulating sheath is a kind of electrically insulating material commonly used, and its material can be insulating material such as Teflon, silicon rubber.
Described compound inslation shirt rim is a kind of electric insulation device: its material can be insulating material such as Teflon, silicon rubber, and function is the creepage distance that increases Optical Fiber Transmission, improves the insulating capacity of optical cable transmission.
Applicable all kinds of passive type fiber optic temperature semiconductor transducer of the present invention (full fiber type, glass mould and mixed type etc.) and purposes (electric current metering, protection, leakage current measurement, dash current are surveyed. amount etc.) fibre optic temperature sensor.The insulation system of passive type fibre optic temperature sensor has following function: safe and reliable, good insulation preformance: optical fiber is easy to settle; Simple in structure, firm, sensing head there are certain antihunt action, sealed damp-proof; Anti-outside electromagnetic interference; Easy to connect etc. with high voltage bus.
Description of drawings
Fig. 1 is the structural representation of passive type fiber optic temperature semiconductor transducer of the present invention;
Embodiment
Further specify concrete implementation step of the present invention below in conjunction with accompanying drawing.
Embodiment 1: as Fig. 1, comprise optical fiber 1, optical fiber insulating sheath 2, compound inslation shirt rim 5, semiconductor membrane 3 and porcelain bushing 4.Its architectural feature is at optical fiber 1 outside tightly packaged fiber insulating sheath 2, in the compound inslation shirt rim 5 that the external insulation of optical fiber insulating sheath 2 has several silicon rubber to make; Optical fiber 1 end face plating layer of semiconductor diaphragm 3 will be coated with semiconductor membrane 3 one ends and insert a porcelain bushing 4, plug with seal with epoxy glue with porcelain bushing 4 contact positions, porcelain bushing not only can be protected the optical fiber contact pins sensing head, again the maskable external interference.
Laser instrument sends laser and gets on the semiconductor membrane 3 by optical fiber 1, refractive index-temperature physical characteristics according to optical semiconductor, the residing environment temperature of the semiconductor material of fiber end face changes and can cause that semi-conductive refractive index changes, change of refractive causes the variation of reflectivity, by the back scattering light intensity that receives, realize the temperature monitoring under the high-tension electricity environment.
The semiconductor membrane 3 that described optical fiber 1 end face is plated is that a kind of light intensity varies with temperature and the temperature-sensitive material that changes; It is to cause reflection coefficient to vary with temperature and change that this ready-made semiconductor material, its function are arranged at present on the market, and its material can be semiconductor materials such as germanium, gallium arsenide, silicon, and present embodiment is selected germanium for use.
Described optical fiber insulating sheath is a kind of electrically insulating material commonly used, and its material can be insulating material such as Teflon, silicon rubber, and present embodiment is selected silicon rubber for use.
Described compound inslation shirt rim is a kind of electric insulation device: its material can be insulating material such as Teflon, silicon rubber, and function is the creepage distance that increases Optical Fiber Transmission, improves the insulating capacity of optical cable transmission, and present embodiment is selected silicon rubber for use.
Claims (4)
1. passive type fiber optic temperature semiconductor transducer, comprise optical fiber, optical fiber insulating sheath, semiconductor membrane and porcelain bushing, it is characterized in that: outside of fiber tightly packaged fiber insulating sheath, fiber end face plating layer of semiconductor diaphragm, to be coated with semiconductor membrane one end and insert a porcelain bushing, plug with seal with insulating gel with the porcelain bushing contact position.
2. a kind of passive type fiber optic temperature semiconductor transducer according to claim 1 is characterized in that: the external insulation at the optical fiber insulating sheath has several compound inslation shirt rims.
3. a kind of passive type fiber optic temperature semiconductor transducer according to claim 1, it is characterized in that: described semiconductor material refractive index varies with temperature and changes.
4. a kind of passive type fiber optic temperature semiconductor transducer according to claim 1, it is characterized in that: described semiconductor film is to be plated to fiber end face by coating technique.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105262888A CN102012282A (en) | 2010-10-29 | 2010-10-29 | Passive optical fiber temperature semiconductor sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105262888A CN102012282A (en) | 2010-10-29 | 2010-10-29 | Passive optical fiber temperature semiconductor sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102012282A true CN102012282A (en) | 2011-04-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010105262888A Pending CN102012282A (en) | 2010-10-29 | 2010-10-29 | Passive optical fiber temperature semiconductor sensor |
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| CN (1) | CN102012282A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102819079A (en) * | 2012-08-17 | 2012-12-12 | 苏州南智传感科技有限公司 | Tight tube optical fiber grating serial sensing optical cable |
| CN103776563A (en) * | 2013-11-25 | 2014-05-07 | 上海华魏光纤传感技术有限公司 | Fiber point-mode temperature measuring system with wireless networking function |
| CN104374489A (en) * | 2014-10-21 | 2015-02-25 | 深圳供电局有限公司 | Semiconductor point type temperature measurement system |
| CN106908171A (en) * | 2017-03-23 | 2017-06-30 | 江苏骏龙光电科技股份有限公司 | A kind of high temperature resistant ring-type packaged fiber grating sensor for switch cubicle |
| CN107271074A (en) * | 2017-06-07 | 2017-10-20 | 北京昕天卫光电科技有限公司 | A kind of High-Voltage Electrical Appliances optical fiber grating temperature-measuring system |
-
2010
- 2010-10-29 CN CN2010105262888A patent/CN102012282A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102819079A (en) * | 2012-08-17 | 2012-12-12 | 苏州南智传感科技有限公司 | Tight tube optical fiber grating serial sensing optical cable |
| CN103776563A (en) * | 2013-11-25 | 2014-05-07 | 上海华魏光纤传感技术有限公司 | Fiber point-mode temperature measuring system with wireless networking function |
| CN104374489A (en) * | 2014-10-21 | 2015-02-25 | 深圳供电局有限公司 | Semiconductor point type temperature measurement system |
| CN106908171A (en) * | 2017-03-23 | 2017-06-30 | 江苏骏龙光电科技股份有限公司 | A kind of high temperature resistant ring-type packaged fiber grating sensor for switch cubicle |
| CN107271074A (en) * | 2017-06-07 | 2017-10-20 | 北京昕天卫光电科技有限公司 | A kind of High-Voltage Electrical Appliances optical fiber grating temperature-measuring system |
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Application publication date: 20110413 |