CN201000371Y - Portable electric equipment temperature detecting system with optical fiber grating sensor and sensor thereof - Google Patents
Portable electric equipment temperature detecting system with optical fiber grating sensor and sensor thereof Download PDFInfo
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- CN201000371Y CN201000371Y CNU2006200274820U CN200620027482U CN201000371Y CN 201000371 Y CN201000371 Y CN 201000371Y CN U2006200274820 U CNU2006200274820 U CN U2006200274820U CN 200620027482 U CN200620027482 U CN 200620027482U CN 201000371 Y CN201000371 Y CN 201000371Y
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Abstract
The utility model relates to a portable electric equipment temperature detecting system with a fiber grating sensor and the sensor. The portable electric equipment temperature detecting system is orderly is formed by orderly connecting a broadband light source, an optical isolator, the first output end of an optical coupler and an optical connector in series through an optical fiber, the second output end of the optical coupler is orderly connected with a microelectronic signal demodulation processing device and a signal processing system in series through an optical fiber, and the other end of the optical connector is arranged on a looped network cabinet, and is connected with the fiber grating sensor equipped in the looped network cabinet. A groove is formed in the casing of the sensor, an outlet connected to the outside of the casing is formed on one side of the groove, a fiber grating is arranged in the groove, and the input end and the output end of the fiber grating are educed to the outer part of the casing through the outlet. The utility model can regularly perform real time itinerant monitoring on a ring network switch cabinet equipment connector. According to the equipment operating condition, the utility model arranges inspection with a clear goal, improves the power supplying reliability, and provides an effective technological means for the power distribution operating reliability management.
Description
Technical field
The utility model relates to a kind of field of sensing technologies, particularly a kind of reliability that can improve system for detecting temperature, and volume is little, the portable electric devices temperature detection system of lightweight band fiber-optic grating sensor and sensor thereof.
Background technology
Optical fiber and fiber-optic grating sensor are the novel sensors of high speed development in recent years, optical fiber and fiber-optic grating sensor can collect the sensing of information and be transmitted in one, compare it with traditional sensor and have a lot of advantages: as explosion-proof, anti-electromagnetic interference (EMI), anticorrosive, anti-vibration, high temperature resistant, volume is little, and is in light weight, flexible, can under rugged surroundings, use especially.
Because oxidation in weather, humid environment and the air, and construction or maintenance defective workmanship, the contact resistance of loop-network switch cabinet device junction becomes greatly gradually, the joint surface heating, therefore the vicious cycle that causes connector temperature to increase must often carry out temperature detection to loop-network switch cabinet.
Because loop-network switch cabinet distribute to disperse, infrared radiation detection apparatus detects very inconvenient for enclosed switch cubicle, and can only spot measurement, costs an arm and a leg.
Chinese patent 03229855.2 discloses a kind of thermal tuning fiber grating demodulation device that utilizes, and is fixed on the miniature electric resistance heater this miniature electric resistance heater and the controllable power supply formation that links as the fiber grating of demodulation.
Chinese patent 03229854.4 is a kind of strain tunable fiber grating demodulation device that utilizes, and its characteristics are axially to spur fiber grating as the fiber grating of demodulation by an electromagnetic shaker that moves.
Chinese patent 200420028699.4 discloses a kind of method with the multiple device demodulation of wavelength-division, and this demodulating system cost is higher.
Also has U.S. Pat 7,729,347 " based on linear edges band filter method " US5,882,049 " based on the relevant couling process of wavelength " US6,335,053 " utilizing the method for chirp grating demodulation ".
The ubiquitous problem of known technology is that equipment volume weighs complicated operation greatly.
Summary of the invention
Technical problem to be solved in the utility model is, a kind of reliability that can improve system for detecting temperature is provided, and volume is little, the portable electric devices temperature detection system of lightweight band fiber-optic grating sensor and sensor thereof.
The technical scheme that the utility model adopted is: a kind of portable electric devices temperature detection system and sensor thereof with fiber-optic grating sensor, fiber-optic grating sensor wherein, include housing, inside at housing is formed with groove, one side of groove is formed with outlet and is communicated to the outside of housing, be provided with fiber grating in the groove, going into end and going out end all is drawn out to housing from outlet outside of fiber grating is formed with the center pit of perforation at the center of housing.The inwall of the groove of described fiber-optic grating sensor enclosure interior is a toroidal, and the outer wall of groove is the shape of tennis racket, and the handle portion of its tennis racket constitutes the outlet of communication groove to outside.
The portable electric devices temperature detection system that constitutes by fiber-optic grating sensor, include wideband light source, optoisolator, photo-coupler, the light connector, microelectronics signal demodulation process device, signal processing system and fiber-optic grating sensor, wherein, wideband light source links by optical fiber and optoisolator input end, the output terminal of optoisolator links by optical fiber and photo-coupler input end, first output terminal of photo-coupler is connected with the light connector by optical fiber, second output terminal of photo-coupler and microelectronics signal demodulation process device, signal processing system is connected in series successively by optical fiber, and the other end of light connector is used to connect the light connector that links to each other with the fiber-optic grating sensor installed in the ring main unit that is set on the ring main unit.Described fiber-optic grating sensor is installed on the interior cable termination of tested ring main unit.Described microelectronics signal demodulation process device includes adjustable filter that constitutes demodulation module and the standard fiber that is connected the adjustable filter output terminal.
The portable electric devices temperature detection system that another is made of fiber-optic grating sensor, include wideband light source, optical circulator, the light connector, microelectronics signal demodulation process device, signal processing system and fiber-optic grating sensor, wherein, first output terminal of wideband light source and optical circulator, the light connector is connected in series successively by optical fiber, second output terminal of optical circulator and microelectronics signal demodulation process device, signal processing system is connected in series successively by optical fiber, and the other end of light connector is used to connect the light connector that links to each other with the fiber-optic grating sensor installed in the ring main unit that is set on the ring main unit.Described fiber-optic grating sensor is installed on the interior cable termination of tested ring main unit.Described microelectronics signal demodulation process device includes adjustable filter that constitutes demodulation module and the standard fiber that is connected the adjustable filter output terminal.
The portable electric devices temperature detection system of band fiber-optic grating sensor of the present utility model and sensor thereof can regularly carry out real-time itinerant monitor system to the loop-network switch cabinet device junction.According to equipment running status, arrange maintenance with a definite target in view, improve power supply reliability, for the management of distribution operational reliability provides effective technical means.The utility model is used microelectronics signal demodulation process device can make detection system greatly reduce volume and weight reduction.Each ring main unit that need detect all is equipped with the light connector in advance; man-machine interface is provided with the coding of each ring main unit; the testing staff is as long as insert the light connector of portable electronics device temperature detection system the light connector of tested ring main unit; number just can record required data by the ring main unit that has enrolled; easy to operate, the connector outside has, and micro metal cabinet rainproof, moistureproof, dust protection is protected.
Description of drawings
Fig. 1 fiber-optical grating temperature sensor of the present utility model;
Fig. 2 is an one-piece construction synoptic diagram of the present utility model;
Fig. 3 the utility model main machine structure synoptic diagram;
Fig. 4 is by the wavelength signals of microelectronics signal demodulation process device output of the present utility model.
Wherein:
1: wideband light source 2: optoisolator
3: photo-coupler 3 ': optical circulator
4: light connector 5: fiber-optic grating sensor
6: microelectronics signal demodulation process device 7: signal processing system
8: housing 9: inwall
10: center pit 11: fiber boot
12: groove 13: outer wall
14: outlet 15: fiber grating
Embodiment
Provide specific embodiment below in conjunction with accompanying drawing, further specify the portable electric devices temperature detection system and the sensor thereof of band fiber-optic grating sensor of the present utility model.
As shown in Figure 1; fiber-optic grating sensor of the present utility model; include housing 8; be formed with groove 12 in the inside of housing 8; one side of groove 12 is formed with outlet 14 and is communicated to the outside of housing 8; be provided with fiber grating 15 in the groove 12; the going into end and go out end all is drawn out to housing 8 from outlet 14 outside of fiber grating 15; and be with fiber boot 11 in the outside of housing 8; be formed with the center pit 10 of perforation at the center of housing 8, fiber-optic grating sensor 5 be fixedly installed to cable termination in the tested ring main unit by this center pit 10.The inwall 9 of the groove 12 of described fiber-optic grating sensor housing 8 inside is a toroidal, and the outer wall 13 of groove 12 is the shape of tennis racket, and the handle portion of its tennis racket constitutes the outlet 14 of communication groove 12 to housing 8 outsides.
The shape of fiber-optic grating sensor 5 can be circular according to position, the shape of contact, aciculiform and other shape.Present embodiment adopts round-shaped.Can carry out the enhanced sensitivity encapsulation to fiber-optic grating sensor 5 according to the sensitivity of measuring temperature.
The portable electric devices temperature detection system that constitutes by fiber-optic grating sensor of the present utility model, include wideband light source 1, optoisolator 2, photo-coupler 3, light connector 4, microelectronics signal demodulation process device 6, signal processing system 7 and fiber-optic grating sensor 5, wherein, wideband light source 1 links by optical fiber and optoisolator 2 input ends, the output terminal of optoisolator 2 links by optical fiber and photo-coupler 3 input ends, first output terminal of photo-coupler 3 is connected with light connector 4 by optical fiber, second output terminal of photo-coupler 3 and microelectronics signal demodulation process device 6, signal processing system 7 is connected in series successively by optical fiber, and the other end of light connector 4 is used to connect the light connector that links to each other with the fiber-optic grating sensor 5 installed in the ring main unit that is set on the ring main unit.And fiber-optic grating sensor 5 is to be installed on the cable termination in the tested ring main unit by screw, cable termination in the tested ring main unit has several, several fiber-optic grating sensors 5 will be installed, interconnecting of each fiber-optic grating sensor 5 is previous go out end and go into end and link to each other and so be connected in series with Next, and that draws first fiber-optic grating sensor 5 at last goes into going out to hold and being connected on the light connector that is arranged on the ring main unit of end and last fiber-optic grating sensor 5.
The portable electric devices temperature detection system that constitutes by fiber-optic grating sensor of the present utility model, it can also be to include: wideband light source 1, optical circulator 3 ', light connector 4, microelectronics signal demodulation process device 6, signal processing system 7 and fiber-optic grating sensor 5, wherein, wideband light source 1 and optical circulator 3 ' first output terminal, light connector 4 is connected in series successively by optical fiber, optical circulator 3 ' second output terminal and microelectronics signal demodulation process device 6, signal processing system 7 is connected in series successively by optical fiber, and the other end of light connector 4 is used to connect the light connector that links to each other with the fiber-optic grating sensor 5 installed in the ring main unit that is set on the ring main unit.And fiber-optic grating sensor 5 is to be installed on the cable termination in the tested ring main unit by screw, cable termination in the tested ring main unit has several, several fiber-optic grating sensors 5 will be installed, interconnecting of each fiber-optic grating sensor 5 is previous go out end and go into end and link to each other and so be connected in series with Next, and that draws first fiber-optic grating sensor 5 at last goes into going out to hold and being connected on the light connector that is arranged on the ring main unit of end and last fiber-optic grating sensor 5.
In above-mentioned two kinds of portable electric devices temperature detection systems that constitute by fiber-optic grating sensor:
Described wideband light source 1 adopt the patent No. be 200520123572.5 and the patent No. be disclosed device in 200520123571.0, be the microminiature wideband light source.Design has high-precision temperature and a Current Control in this light source, and in 5ppm, output power stability is higher than 500ppm with the centre wavelength good stability that guarantees the microminiature wideband light source.The centre wavelength of microminiature wideband light source is 1550nm, three dB bandwidth is that C-band or the three dB bandwidth of 40nm is the wideband light source of 80nm C+L wave band, wideband light source output light is exported through optoisolator, and the optoisolator output terminal links in photo-coupler or optical circulator input end;
Described optoisolator 2, photo-coupler 3, optical circulator 3 ' the be product of selling on the market.And light connector 4 employing models are the product of LC, SC, MU;
Described microelectronics signal demodulation process device 6 includes the microelectron-mechanical adjustable filter that constitutes demodulation module, the high-precision temperature control criterion optical fiber that is connected the adjustable filter output terminal.Wherein, demodulation module is the microelectronics signal demodulation module of selling on the market, and it is 03202546.7 disclosed device that standard fiber adopts the patent No., is to form super narrow band fiber grating by temperature stabilization control and Wavelength stabilized encapsulation.The three dB bandwidth of super narrow band fiber grating is less than 2.5pm;
Described signal processing system 7 includes control module, display unit, storage element and print unit.Its display unit can be LCDs and other display device.
The portable electric devices temperature detection system that is made of fiber-optic grating sensor of the present utility model also has the RS232 interface.And dc battery power supply is installed, also can be with 220 volts of AC power.
Know-why:
Prague peak value reflection wavelength:
λ
B＝2n
effΛ
In the formula: λ B is Bragg wavelength (being the grating reflection wavelength); Λ is the grating cycle; n
EffEffective refractive index for fiber optic materials
n
EffΛ is the function of temperature T and axial strain ε, so the long relative variation of cloth loudspeaker lattice wave can be write as:
Δλ/λB＝(α+ξ)ΔT+(1-Pe)ε
Wherein α, ξ are respectively the thermal expansivity and the thermo-optical coeffecients of optical fiber, and it is worth α=0.55 * 10-6, ξ=8.3 * 10-6, and promptly temperature control approximately is 0.0136 nm/ ℃, (λ is 1550nm); Pe is effective strain optical coefficient, is approximately 0.22, and promptly strain sensitivity is 0.001209nm/ μ ε.If external force is utilized the above-mentioned relation formula to obtain measuring the wavelength change amount and just can be measured the variation of temperature amount
Δλ/ΔT＝αt
α t is defined as the temperature control of this temperature sensor, can be obtained by experiment, can calculate variation of temperature t-t0 by the wavelength change amount that measures:
The above only is preferred embodiment of the present invention, be not that the present invention is done any pro forma restriction, every foundation technical spirit of the present invention is done any simple modification, equivalent variations and modification to above embodiment, all belongs in the scope of technical solution of the present invention.
Claims (8)
1. fiber-optic grating sensor, include housing (8), it is characterized in that, be formed with groove (12) in the inside of housing (8), one side of groove (12) is formed with outlet (14) and is communicated to the outside of housing (8), be provided with fiber grating (15) in the groove (12), going into end and going out end all is drawn out to housing (8) from outlet (14) outside of fiber grating (15) is formed with the center pit (10) of perforation at the center of housing (8).
2. fiber-optic grating sensor according to claim 1, it is characterized in that, the inwall (9) of the groove (12) that described fiber-optic grating sensor housing (8) is inner is a toroidal, the outer wall (13) of groove (12) is the shape of tennis racket, and the handle portion of its tennis racket constitutes communication groove (12) to the outside outlet (14) of housing (8).
3. portable electric devices temperature detection system that constitutes by fiber-optic grating sensor, it is characterized in that, include wideband light source (1), optoisolator (2), photo-coupler (3), light connector (4), microelectronics signal demodulation process device (6), signal processing system (7) and fiber-optic grating sensor (5), wherein, wideband light source (1) links by optical fiber and optoisolator (2) input end, the output terminal of optoisolator (2) links by optical fiber and photo-coupler (3) input end, first output terminal of photo-coupler (3) is connected with light connector (4) by optical fiber, second output terminal of photo-coupler (3) and microelectronics signal demodulation process device (6), signal processing system (7) is connected in series successively by optical fiber, and the other end of light connector (4) is used to connect the light connector that links to each other with the fiber-optic grating sensor (5) installed in the ring main unit that is set on the ring main unit.
4. the portable electric devices temperature detection system that is made of fiber-optic grating sensor according to claim 3 is characterized in that, described fiber-optic grating sensor (5) is installed on the interior cable termination of tested ring main unit.
5. the portable electric devices temperature detection system that constitutes by fiber-optic grating sensor according to claim 3, it is characterized in that described microelectronics signal demodulation process device (6) includes adjustable filter that constitutes demodulation module and the standard fiber that is connected the adjustable filter output terminal.
6. portable electric devices temperature detection system that constitutes by fiber-optic grating sensor, it is characterized in that, include wideband light source (1), optical circulator (3 '), light connector (4), microelectronics signal demodulation process device (6), signal processing system (7) and fiber-optic grating sensor (5), wherein, first output terminal of wideband light source (1) and optical circulator (3 '), light connector (4) is connected in series successively by optical fiber, second output terminal of optical circulator (3 ') and microelectronics signal demodulation process device (6), signal processing system (7) is connected in series successively by optical fiber, and the other end of light connector (4) is used to connect the light connector that links to each other with the fiber-optic grating sensor (5) installed in the ring main unit that is set on the ring main unit.
7. the portable electric devices temperature detection system that is made of fiber-optic grating sensor according to claim 6 is characterized in that, described fiber-optic grating sensor (5) is installed on the interior cable termination of tested ring main unit.
8. the portable electric devices temperature detection system that constitutes by fiber-optic grating sensor according to claim 6, it is characterized in that described microelectronics signal demodulation process device (6) includes adjustable filter that constitutes demodulation module and the standard fiber that is connected the adjustable filter output terminal.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2006200274820U CN201000371Y (en) | 2006-09-29 | 2006-09-29 | Portable electric equipment temperature detecting system with optical fiber grating sensor and sensor thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2006200274820U CN201000371Y (en) | 2006-09-29 | 2006-09-29 | Portable electric equipment temperature detecting system with optical fiber grating sensor and sensor thereof |
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| CN201000371Y true CN201000371Y (en) | 2008-01-02 |
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| CNU2006200274820U Expired - Fee Related CN201000371Y (en) | 2006-09-29 | 2006-09-29 | Portable electric equipment temperature detecting system with optical fiber grating sensor and sensor thereof |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102283538A (en) * | 2011-07-20 | 2011-12-21 | 上海波汇通信科技有限公司 | Intelligent bed sheet for measuring temperature of human body |
| CN103604527A (en) * | 2013-12-06 | 2014-02-26 | 上海交通大学 | Method for measuring temperature by using Bragg grating array |
| CN104483040A (en) * | 2014-12-30 | 2015-04-01 | 杭州欧忆光电科技有限公司 | Portable distribution optical fiber temperature sensor |
| CN105203225A (en) * | 2014-06-19 | 2015-12-30 | 国家电网公司 | Optical fiber grating temperature detecting method and device |
-
2006
- 2006-09-29 CN CNU2006200274820U patent/CN201000371Y/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102283538A (en) * | 2011-07-20 | 2011-12-21 | 上海波汇通信科技有限公司 | Intelligent bed sheet for measuring temperature of human body |
| CN103604527A (en) * | 2013-12-06 | 2014-02-26 | 上海交通大学 | Method for measuring temperature by using Bragg grating array |
| CN103604527B (en) * | 2013-12-06 | 2016-02-17 | 上海交通大学 | Use the method for bragg grating array measuring tempeature |
| CN105203225A (en) * | 2014-06-19 | 2015-12-30 | 国家电网公司 | Optical fiber grating temperature detecting method and device |
| CN105203225B (en) * | 2014-06-19 | 2019-02-26 | 国家电网公司 | A kind of optical fiber grating temperature detection method and device |
| CN104483040A (en) * | 2014-12-30 | 2015-04-01 | 杭州欧忆光电科技有限公司 | Portable distribution optical fiber temperature sensor |
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Owner name: NANJING DAYUAN INTELLIGENT TECHNOLOGY CO.,LTD. Free format text: FORMER OWNER: TIANJIN AT PHOTONICS INC. Effective date: 20120517 |
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Free format text: CORRECT: ADDRESS; FROM: 300384 NANKAI, TIANJIN TO: 211135 NANJING, JIANGSU PROVINCE |
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Effective date of registration: 20120517 Address after: Dong Qi Road Nanjing City, Jiangsu province 211135 kylin Technology Park No. 666 Patentee after: Nanjing Dayuan Intelligent Technology Co., Ltd. Address before: 300384 Tianjin International Center for new technology industry park, 405 Patentee before: Tianjin AT Photonics Inc. |
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Granted publication date: 20080102 Termination date: 20110929 |