CN107941374A - A kind of continuously distributed formula optical fiber temperature monitoring system - Google Patents
A kind of continuously distributed formula optical fiber temperature monitoring system Download PDFInfo
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- CN107941374A CN107941374A CN201711469820.5A CN201711469820A CN107941374A CN 107941374 A CN107941374 A CN 107941374A CN 201711469820 A CN201711469820 A CN 201711469820A CN 107941374 A CN107941374 A CN 107941374A
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- 239000013307 optical fiber Substances 0.000 title claims abstract description 87
- 238000012544 monitoring process Methods 0.000 title claims abstract description 17
- 239000007787 solid Substances 0.000 claims abstract description 25
- 238000001514 detection method Methods 0.000 claims description 7
- 238000010792 warming Methods 0.000 claims description 6
- 230000003287 optical effect Effects 0.000 claims description 3
- 238000009529 body temperature measurement Methods 0.000 abstract description 8
- 238000010586 diagram Methods 0.000 description 11
- 238000005516 engineering process Methods 0.000 description 8
- 239000000835 fiber Substances 0.000 description 6
- 238000005259 measurement Methods 0.000 description 5
- 238000004891 communication Methods 0.000 description 3
- 238000001069 Raman spectroscopy Methods 0.000 description 2
- 238000013481 data capture Methods 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 230000005856 abnormality Effects 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K11/00—Measuring temperature based upon physical or chemical changes not covered by groups G01K3/00, G01K5/00, G01K7/00 or G01K9/00
- G01K11/32—Measuring temperature based upon physical or chemical changes not covered by groups G01K3/00, G01K5/00, G01K7/00 or G01K9/00 using changes in transmittance, scattering or luminescence in optical fibres
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K11/00—Measuring temperature based upon physical or chemical changes not covered by groups G01K3/00, G01K5/00, G01K7/00 or G01K9/00
- G01K11/32—Measuring temperature based upon physical or chemical changes not covered by groups G01K3/00, G01K5/00, G01K7/00 or G01K9/00 using changes in transmittance, scattering or luminescence in optical fibres
- G01K11/322—Measuring temperature based upon physical or chemical changes not covered by groups G01K3/00, G01K5/00, G01K7/00 or G01K9/00 using changes in transmittance, scattering or luminescence in optical fibres using Brillouin scattering
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Measuring Temperature Or Quantity Of Heat (AREA)
Abstract
The present invention relates to a kind of continuously distributed formula optical fiber temperature monitoring system, including temperature monitor, temperature-measuring optical fiber, temperature-measuring optical fiber is one, is continuously arranged in the position of all temperature to be monitored, and temperature-measuring optical fiber is connected with temperature monitor；Temperature monitor includes controller, signal generator, optical fiber laser, preamplifier, lock-in amplifier, data collecting card, all solid state computer, GPRS/LTE modules；Controller is connected with optical fiber laser, signal generator, and temperature-measuring optical fiber one end is connected with optical fiber laser, and the other end is connected with preamplifier；Signal generator is connected with lock-in amplifier；Preamplifier, lock-in amplifier, data collecting card, all solid state computer are sequentially connected.Advantage is：The continuous temperature measurement in whole large-scale place is completed using a temperature-measuring optical fiber；The signal generator and amplifier of temperature monitor realize the accuracy of thermometric, and the distance resolution of the temperature measuring point of temperature-measuring optical fiber is up to 2cm.
Description
Technical field
The present invention relates to field of temperature measurement, more particularly to a kind of continuously distributed formula fiber optic temperature for large-scale place fire-fighting to supervise
Examining system.
Background technology
Fire department clear stipulaties are large-scale or important place should set fire automatic monitoring and alarm system.Such as：It is large and medium-sized
Computer room, special valuables storehouse, the library of 1,000,000, important archives, historical relic collection storehouse, overall floorage are more than
6000m2Shop, Exhibition Architecture, commerce financial building, large airport, large-scale power regulation station, Large passenger station and goods station,
The places such as top grade, first-class cinema, hospital, sanatorium.
The development that information technology and sensing technology using fiber optic communication and optical fiber sensing technology as representative are being advanced by leaps and bounds,
The progress of human society is greatly promoted.Compared with other sensors, optical fiber has its uniqueness as a kind of new sensor
Advantage.Anticorrosive because its water resistance is strong, electromagnetism interference, high temperature resistant, signals security, can be built into sensing network realization
The advantages that distributed measurement, and it is cheap, automation easy to implement is monitored, distributed line measurement can be formed even
Field measurement.Therefore Fibre Optical Sensor is rapidly developed in recent years, will be applied to wide range.
And Distributed Optical Fiber Sensing Techniques (Brillouin optical time domain analysis technology, Brillouin based on Brillouin scattering
Opitcal Time DomainAnalysis, abbreviation BOTDA) research although start late, but strain, temperature physical field
Measurement on the precision, sensitivity, spatial resolution and the measurement range that are reached passed than its auspicious thunder scattering, Raman scattering optical fiber
It is superior to feel technical performance, and does not have particular/special requirement for the material of optical fiber, therefore Brillouin sensing technology is just progressively obtaining extensively
General concern and research.
Continuously distributed formula Brillouin fiber optic temperature and strain sensing instrument is an item collection optics, electronics, computer and data
The new high-tech product that the communication technology is combined, the product can provide the long range, high-resolution, high accuracy of continuously distributed formula
Strain and temperature monitoring.
Currently, it is large-scale, or the fire monitoring of important place also uses point type sensor for measuring temperature, its points is more, essence
Spend low, complex circuit, is easily disturbed, and transfinites and is a little not easy to determine.Passed in spite of using the scattering of auspicious thunder, Raman scattering distribution type fiber-optic
Sense technology thermometric, but temperature spot distance and temperature measurement accuracy height not as continuously distributed formula Brillouin fiber optic temp measuring system.
The content of the invention
For overcome the deficiencies in the prior art, the object of the present invention is to provide a kind of continuously distributed formula optical fiber temperature monitoring system
System, circuit is simple, realizes the continuous temperature measurement in whole large-scale place, improves thermometric accuracy.
To achieve the above object, the present invention is achieved through the following technical solutions：
A kind of continuously distributed formula optical fiber temperature monitoring system, including temperature monitor, temperature-measuring optical fiber, temperature-measuring optical fiber one
Root, is continuously arranged in the position of all temperature to be monitored, and temperature-measuring optical fiber is connected with temperature monitor；
Temperature monitor includes controller, signal generator, optical fiber laser, preamplifier, lock-in amplifier, data
Capture card, all solid state computer, GPRS/LTE modules；Controller is connected with optical fiber laser, signal generator, temperature-measuring optical fiber one
End is connected with optical fiber laser, and the other end is connected with preamplifier；Signal generator is connected with lock-in amplifier；Preceding storing
Big device, lock-in amplifier, data collecting card, all solid state computer are sequentially connected, and WiFi module, warming are connected with all solid state computer
Controller, GPRS/LTE modules；
Signal generator sends modulated signal to controller, and modulated signal is sent to optical fiber laser, light by controller
Modulated signal is transferred to temperature-measuring optical fiber by fibre laser, the temperature signal of temperature-measuring optical fiber detection after preamplifier amplifies, by
Analog quantity is converted to digital quantity and is sent to data collecting card by lock-in amplifier, and all solid state computer is sent to by data collecting card,
Temperature information is transferred to remote monitoring center by all solid state computer through WiFi module or GPRS/LTE modules；
Reference signal is sent to lock-in amplifier by signal generator, then is adopted reference signal through data by lock-in amplifier
Truck is sent to all solid state computer.
The warming controller includes temperature transmitter DS18B20, temperature transmitter DS18B20 detection temperature detectors
Internal temperature, and temperature information is handled through all solid state computer remote monitoring center is sent to by GPRS/LTE modules.
The temperature-measuring optical fiber enters one floor ceiling of building body by optical fiber laser, and coils and be arranged in one layer of ceiling, then by
One floor ceiling enters two floor ceilings of building body through wall, and coils and be arranged in two layers of ceiling, enters building body through wall by two floor ceiling
Three layers, and so on, until temperature-measuring optical fiber coiling top layer ceiling, Zai You buildings body wall return to the temperature detection for being arranged on a floor
Instrument, and be connected with the preamplifier of temperature monitor.
The temperature-measuring optical fiber is fixed between ceiling and interior refractory slab by fixing device.
Compared with prior art, the beneficial effects of the invention are as follows：
1) present invention completes the continuous temperature measurement in whole large-scale place using a temperature-measuring optical fiber；
2) signal generator of temperature monitor and amplifier realize the accuracy of thermometric, the temperature measuring point of temperature-measuring optical fiber away from
High Resolution is up to 2cm, and temperature measurement accuracy is also within ± 1 DEG C；
3) the present invention overcomes the sensor for measuring temperature band that current large-scale or important place fire monitoring uses point type
The drawbacks of coming, point type sensor for measuring temperature is more with counting, and precision is low, and complex circuit, is easily disturbed, and transfinites and is a little not easy to determine
Shortcoming；And it is characteristic of the invention that temperature measuring point is more, circuit is simple, signal can be sent and adjusted by temperature monitor, and then reduced and surveyed
The external interference of warm optical fiber, improves thermometric reliability, while can clearly detect the big position of temperature change using temperature-measuring optical fiber
Put, easy to fire alarm.
Brief description of the drawings
Fig. 1 is a building outside drawing.
Body one floor temperature-measuring optical fiber in Tu2Shi buildings arranges schematic diagram.
Body two floor temperature-measuring optical fibers in Tu3Shi buildings arranges schematic diagram.
Body three floor temperature-measuring optical fibers in Tu4Shi buildings arranges schematic diagram.
Temperature-measuring optical fiber arrangement schematic diagram inside Tu5Shi buildings body.
The fixation schematic diagram of every layer of temperature-measuring optical fiber and ceiling in Tu6Shi buildings.
Fig. 7 is temperature monitor schematic diagram.
Fig. 8 is the schematic diagram of all solid state computer.
Fig. 9 is GPRS/LTE module principle figures.
Figure 10 is the CPU element circuit diagram of GPRS/LTE modules.
Figure 11 is the LED display unit circuit diagram of GPRS/LTE modules.
Figure 12 is the address setting unit circuit diagram of GPRS/LTE modules.
Figure 13 is the antenna element circuit diagram of GPRS/LTE modules.
Figure 14 is the power unit circuit figure of GPRS/LTE modules.
In figure：1- temperature-measuring optical fibers 2- temperature monitors 3- corridor 4- halls 5- rooms 6- ceiling 7- fixing devices
1-1~1-2~2-1~13-2 be followed successively by each floor temperature-measuring optical fiber in building body start and whole head.
Embodiment
The present invention is described in detail with reference to Figure of description, it should be noted that the implementation of the present invention is unlimited
In following embodiment.
Fig. 1, Fig. 7 are seen, by taking one building temperature of fiber-optic monitoring as an example：
Continuously distributed formula optical fiber temperature monitoring system, including temperature monitor 2, temperature-measuring optical fiber 1, temperature-measuring optical fiber 1 are one,
The position of all temperature to be monitored is continuously arranged in, temperature-measuring optical fiber 1 is connected with temperature monitor 2；Temperature monitor 2 includes control
Device processed, signal generator, optical fiber laser, preamplifier, lock-in amplifier, data collecting card, all solid state computer, GPRS/
LTE module；Controller is connected with optical fiber laser, signal generator, and 1 one end of temperature-measuring optical fiber is connected with optical fiber laser, separately
One end is connected with preamplifier；Signal generator is connected with lock-in amplifier；Preamplifier, lock-in amplifier, data
Capture card, all solid state computer are sequentially connected.All solid state computer can use the GZ1037 industrial personal computers for accounting for U.S..
See Fig. 8-Figure 14, WiFi module, warming controller, GPRS/LTE modules, LCD are connected with all solid state computer and is shown
Screen.See Fig. 7, Fig. 8, warming controller includes temperature transmitter DS18B20, temperature transmitter DS18B20 detection temperatures detector 2
Internal temperature, and temperature information is handled through all solid state computer remote monitoring center is sent to by GPRS/LTE modules.It is all solid state
Computer is also using RS-485 interface Data Over Cables.See Fig. 9, GPRS/LTE modules can realize address is set, LCD is shown,
The functions such as alarm, wireless communication, physical circuit are shown in Figure 10-Figure 14.
See Fig. 7, signal generator sends modulated signal to controller, modulated signal is sent to optical-fiber laser by controller
Modulated signal is transferred to temperature-measuring optical fiber 1 by device, optical fiber laser, and the temperature signal that temperature-measuring optical fiber 1 detects is put through preamplifier
After big, analog quantity is converted into digital quantity by lock-in amplifier and is sent to data collecting card, be sent to by data collecting card complete solid
Temperature information is transferred to remote monitoring center by state computer, all solid state computer through WiFi module or GPRS/LTE modules；
Reference signal is sent to lock-in amplifier by signal generator, then is adopted reference signal through data by lock-in amplifier
Truck is sent to all solid state computer.Temperature-measuring optical fiber 1 uses brillouin distributed optical fiber, and thermometric is more accurate.
See Fig. 2, temperature-measuring optical fiber 1 enters one floor ceiling 6 of building body by optical fiber laser, and coils and be arranged in one layer of ceiling 6, sees
Fig. 3, then enter two floor ceilings 6 of building body through wall by a floor ceiling 6, and coil and be arranged in two layers of ceiling 6, Fig. 4 is seen, by two layers of top
Canopy 6 enters three floor of building body through wall, and coils and be arranged in three layers of ceiling 6, and so on, until temperature-measuring optical fiber 1 coils top layer top
Canopy 6, Zai You buildings body wall returns to the temperature monitor 2 for being arranged on a floor, and is connected with the preamplifier of temperature monitor 2,
See Fig. 5.Temperature-measuring optical fiber 1 is one, can cover the hall 4 of each floor, corridor 3, room 5 etc., temperature-measuring optical fiber 1 at every layer
Using snakelike coiling, easy to adjust the density of temperature measuring point arrangement.
See Fig. 6, temperature-measuring optical fiber 1 is fixed between ceiling 6 and interior refractory slab by fixing device 7, does not influence building interior U.S.
See, while detection temperature can be facilitated.Fixing device 7 can be chute, wire fixing clamp etc..
Detected through temperature-measuring optical fiber 1, once find temperaturing lifting abnormality, can between transfer monitoring, or checked to relevant position and be
It is no to have fire behavior, easy to find fire behavior in time, accurate temperature information is provided for the fire-fighting in large-scale place, avoids fire.
It is an advantage of the invention that：
1) present invention completes the continuous temperature measurement in whole large-scale place using a temperature-measuring optical fiber 1；
2) signal generator of temperature monitor 2 and amplifier realize the accuracy of thermometric, the temperature measuring point of temperature-measuring optical fiber 1 it
Between beeline up to 2cm, temperature measurement accuracy is also within ± 1 DEG C；
3) the present invention overcomes the sensor for measuring temperature band that current large-scale or important place fire monitoring uses point type
The drawbacks of coming, point type sensor for measuring temperature is more with counting, and precision is low, and complex circuit, is easily disturbed, and transfinites and is a little not easy to determine
Shortcoming；And it is characteristic of the invention that temperature measuring point is more, circuit is simple, temperature monitor 2 can be adjusted signal is flourishing, and then is reduced and surveyed
The external interference of warm optical fiber 1, improve thermometric reliability, while can clearly detect that temperature change is big using temperature-measuring optical fiber 1
Position, is detected on the spot easy to the later stage.
Claims (4)
1. a kind of continuously distributed formula optical fiber temperature monitoring system, it is characterised in that including temperature monitor, temperature-measuring optical fiber, thermometric
Optical fiber is one, is continuously arranged in the position of all temperature to be monitored, and temperature-measuring optical fiber is connected with temperature monitor；
Temperature monitor includes controller, signal generator, optical fiber laser, preamplifier, lock-in amplifier, data acquisition
Card, all solid state computer, GPRS/LTE radio network units；Controller is connected with optical fiber laser, signal generator, temperature measuring optical
Fine one end is connected with optical fiber laser, and the other end is connected with preamplifier；Signal generator is connected with lock-in amplifier；Before
Amplifier, lock-in amplifier, data collecting card, all solid state computer is put to be sequentially connected, be connected with all solid state computer WiFi module,
Warming controller, GPRS/LTE radio network units；
Signal generator sends modulated signal to controller, modulated signal is sent to optical fiber laser by controller, optical fiber swashs
Modulated signal is transferred to temperature-measuring optical fiber by light device, and the temperature signal of temperature-measuring optical fiber detection is after preamplifier amplifies, by lock phase
Analog quantity is converted to digital quantity and is sent to data collecting card by amplifier, and all solid state computer, Quan Gu are sent to by data collecting card
Temperature information is transferred to remote monitoring center by state computer through WiFi module or GPRS/LTE radio network units；
Reference signal is sent to lock-in amplifier by signal generator, then by lock-in amplifier by reference signal through data collecting card
It is sent to all solid state computer.
A kind of 2. continuously distributed formula optical fiber temperature monitoring system according to claim 1, it is characterised in that the warming
Controller includes temperature transmitter DS18B20, temperature transmitter DS18B20 detection temperature detector internal temperatures, and by temperature
Information handles through all solid state computer and is sent to remote monitoring center by GPRS/LTE radio network units.
A kind of 3. continuously distributed formula optical fiber temperature monitoring system according to claim 1, it is characterised in that the thermometric
Optical fiber enters one floor ceiling of building body by optical fiber laser, and coils and be arranged in one layer of ceiling, then is entered by one layer of ceiling through wall
Two floor ceilings of building body, and coil and be arranged in two layers of ceiling, enter three floor of building body through wall by two floor ceiling, and so on, until
Temperature-measuring optical fiber coils top layer ceiling, and Zai You buildings body wall returns to the temperature monitor for being arranged on a floor, and with temperature monitor
Preamplifier connects.
4. a kind of continuously distributed formula optical fiber temperature monitoring system according to claim 1 or 3, it is characterised in that described
Temperature-measuring optical fiber is fixed between ceiling and interior refractory slab by fixing device.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201711469820.5A CN107941374A (en) | 2017-12-29 | 2017-12-29 | A kind of continuously distributed formula optical fiber temperature monitoring system |
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| CN201711469820.5A CN107941374A (en) | 2017-12-29 | 2017-12-29 | A kind of continuously distributed formula optical fiber temperature monitoring system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112345405A (en) * | 2020-09-25 | 2021-02-09 | 西安电子科技大学 | Sulfur hexafluoride gas density monitoring device and method |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN206056818U (en) * | 2016-08-31 | 2017-03-29 | 辽宁宏成电力股份有限公司 | The brillouin distributed fiber optic temperature measurement system of High-low voltage switch cabinet |
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2017
- 2017-12-29 CN CN201711469820.5A patent/CN107941374A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN206056818U (en) * | 2016-08-31 | 2017-03-29 | 辽宁宏成电力股份有限公司 | The brillouin distributed fiber optic temperature measurement system of High-low voltage switch cabinet |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112345405A (en) * | 2020-09-25 | 2021-02-09 | 西安电子科技大学 | Sulfur hexafluoride gas density monitoring device and method |
| CN112345405B (en) * | 2020-09-25 | 2022-02-18 | 西安电子科技大学 | Sulfur hexafluoride gas density monitoring device and method |
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Application publication date: 20180420 |