CN209639859U - One kind being based on high-precision multi-channel type temperature-measuring system of distributed fibers - Google Patents
One kind being based on high-precision multi-channel type temperature-measuring system of distributed fibers Download PDFInfo
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- CN209639859U CN209639859U CN201920192280.9U CN201920192280U CN209639859U CN 209639859 U CN209639859 U CN 209639859U CN 201920192280 U CN201920192280 U CN 201920192280U CN 209639859 U CN209639859 U CN 209639859U
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Abstract
One kind being based on high-precision multi-channel type temperature-measuring system of distributed fibers, which includes high-speed pulse light source, WDM wavelength division multiplexer, constant temperature box, photoswitch, APD photoelectric converter, high speed data acquisition system, master controller and PERCOM peripheral communication and DO linkage interface；The utility model: 1. can customize Measurement channel quantity according to photoswitch number of channels；2. single channel measurement distance sensing be 0 to 10KM, thermometric resolution ratio be 0.1 DEG C, accuracy be ± 1 DEG C；3. it can be applied to high-strength magnetic interference environment, it can effective accurate measurements temperature；4. can continuous temperature measurement, real-time display temperature curve, can displays temperature and location information, multiwindow or can be shown with window；5. any position that can correspond to different channels carries out the alarm of temperature subregion, subregion alarm number is not limited, and alarm parameters early-warning parameters can self-setting as needed.6. uninterrupted monitoring in 7x24 hours can be carried out to the temperature of monitoring point, temperature data can be stored 3 years or more.
Description
Technical field
The utility model relates to optical fiber temperature-measurement field of sensing technologies, are based especially on a kind of high-precision multi-channel type distribution
Formula optical fiber temperature measurement system.
Background technique
With the continuous development of China's industry Internet of Things, in many measurements and observation and control technology field, certain special industry
Under environment occasion, temperature always is very crucial physical factor, and the variation of many physical characteristics is all reflected directly in temperature
Lifting on, therefore the technology of temperature monitoring is also developed constantly, it is increasing to the meaning of temperature monitoring.Measure observing and controlling
The temperature sensor type and quantity that cause uses also greatly increase.Especially industry measurement and control system is perfect, is stepped up
Various types of temperature sensors.However traditional temperature transducer more be used in thermistor, semiconductor, platinum resistance,
The temperature sensors such as infrared ray, thermocouple, these sensors are in certain special industrial environment (such as high voltage, high current, forceful electric power
Magnetic disturbance, inflammable and explosive etc.), using electric signal as the temperature sensor of working principle usually in terms of safety, stability by
Very big limitation, and the continuous continual temperature monitoring of many application requirements, thus in order to meet a variety of safety off field,
Reliably, effective thermometric develops novel temp measuring system as inexorable trend.
In addition, traditional system main component mostly puts a certain space on the ground, not only occupied space, Wu Fashi
The big efficient utilization in existing space, and wiring is in disorder, not only influences beautiful and in disorder ground configuration and is easy to bring security risk.
Utility model content
Purpose of utility model:
The utility model provides one kind based on high-precision multi-channel type temperature-measuring system of distributed fibers, and the purpose is to solve
The problems of previous, the utility model improves the use scope and temperature measurement accuracy of temp measuring system.This system is built upon
Exploitation design is carried out on the basis of multimode fibre.
The utility model technical solution used for the above purpose is:
One kind being based on high-precision multi-channel type temperature-measuring system of distributed fibers, it is characterised in that: the system includes high speed
Light-pulse generator, WDM wavelength division multiplexer, constant temperature box, photoswitch, APD photoelectric converter, high speed data acquisition system, master controller and
PERCOM peripheral communication and DO linkage interface；
High-speed pulse light source connects WDM wavelength division multiplexer and high speed data acquisition system, and WDM wavelength division multiplexer connects constant temperature box
With APD photoelectric converter, constant temperature box connects photoswitch；APD photoelectric converter connects high speed data acquisition system, high-speed data acquisition
Device connects master controller, and master controller connects PERCOM peripheral communication and DO linkage interface；
Constant temperature box connects master controller with photoswitch.
The system further includes power supply and filter circuit, and power supply and filter circuit main function are to provide needed for complete machine work
Power supply, filter guarantee the degree of purity of supply power supply.
Photoswitch connects temperature sensing optical fiber, and master controller connects host computer.
High-speed pulse light source, WDM wavelength division multiplexer, constant temperature box, photoswitch, APD photoelectric converter, high-speed data acquisition
Device, power supply and filter circuit, master controller and PERCOM peripheral communication and DO linkage interface are arranged in shell；
The system further includes hanging mechanisms, and the intracorporal power supply of shell is connected to plug as power input by power supply line；
Hanging mechanisms include mounting shell, winding drum and fastening shaft；Winding drum setting is in mounting shell, the master of plug
In mounting shell, the inserted sheet of plug stretches out the front side wall of shell for body setting；In use, inserted sheet is inserted into the two of the top of five spring hole scokets
In a hole.
Fastening shaft is left and right (left and right in such as Fig. 5) two, and two fastening shafts pass through lower part and the fastening of mounting shell
The front end of shaft is connected with fastening inserted sheet, and two fastening inserted sheets stretch out the front side wall of mounting shell, the direction of two fastening inserted sheets and
Two holes of bottom side by side in three hole of lower part of corresponding five spring hole scokets in position, that is to say, that general five spring hole scoket is top
Two holes, three hole of lower part, three hole of lower part are the form of triangle arrangement, that is, one, top hole, two holes of lower parallel, and the application
In, in use, the rear end for fastening shaft is stretched in two holes of the lower parallel that two fastening inserted sheets can just be inserted into three hole jacks
The rear wall of shell is mounted out；
It mounts and is provided with hanging part and fastener on the rear wall of shell；Hanging part includes link and top tight pieces, and link is fixed
On the rear wall of mounting shell, top tight pieces include sliding rail and can on the slide rail laterally (being exactly laterally left and right directions shown in Fig. 5)
Mobile sliding block, sliding rail are arranged in the top of link, and sliding block can be in and sliding laterally link surface or
Leave the surface of link；
Fastener includes two compressor arms and two poke rods, and two poke rods are respectively fitted over left and right two tightly by change
Gu the rear end of shaft, and poke rod can be provided with torsion between the change and fastening shaft of poke rod relative to fastening shaft rotation
Spring；
The upper end of two compressor arms is movably connected by upper shaft, forms herringbone structure, two compressor arms
Lower end respectively connects the upper end of two poke rods in left and right, and compressor arm is flexibly connected with poke rod by lower rotary shaft, in use, passing through
The upper end of two compressor arms is pushed, so that two poke rods rotate outward, i.e., as shown in figure 5, the change on the left side rotates counterclockwise,
The change on the right rotates clockwise, and makes fastening shaft have a rotation energetically to torsional spring during two poke rod rotations
Trend prevents so that forming the frictional force of fastening between two fastening inserted sheets in five spring hole scoket lower opening of insertion and socket aperture
Mounting shell falls off；Fastening shaft rotation is driven by torsional spring, on the one hand prevents fastening shaft hardness rotation from causing socket or tight
Gu the damage of inserted sheet, on the other hand, so that fastening inserted sheet and jack elastic tensioning, fastening effect are more preferable.
Housing upper face is provided with the hook hung on link when use to the side of mounting shell, which includes perpendicular slotting and horizontal
Beam, perpendicular to insert the one end for being vertically set on crossbeam, the other end of crossbeam connects shell；In use, hanging on link and hanging
During connecing, the perpendicular slotting upper end for withstanding two compressor arms is moved down；
The slide bar that is provided with top sliding slot at the top of shell and can be moved in the sliding slot of top, the mobile direction of slide bar and cunning
Block moving direction is identical, and the top of slide bar is provided with transverse link, and transverse link is vertical with slide bar, and one end of transverse link passes through
Set ring set enables lantern ring that transverse link is driven to rotate by axis of slide bar on slide bar top, i.e., as shown in figure 9, transverse link rotates
Face is formed by perpendicular to drawing；
The other end of transverse link is provided with the through-hole for driven rod insertion；
The upper end of sliding block is provided with the slot for driven rod insertion, when transverse link is rotated to sliding block, through-hole energy
It is corresponding up and down with slot；
Driven rod is the structure that can be extracted out out of through-hole.
Winding drum is hollow roller frame, and power supply line is put in the cavity of winding drum by the shaft end of winding drum,
And stretched out from the lateral through aperture of winding drum, it is then wound around on winding drum, stretches out mounting shell later and be connected to shell.
Handle or turntable that control winding drum 3 rotates are provided on one end side wall of mounting shell.
The system further includes initial alignment part, which is a U-shaped plug-in unit, and U-shaped plug-in unit includes top bar under
Square bar, upper square bar and lower square bar are connected by column,
Fastening shaft in the middle part of be provided with upper rectangular slot, be provided on the mounting shell of the bottom of change with it is rectangular on this
Above and below slot it is corresponding under rectangular slot, the shapes and sizes of upper rectangular slot inner wall of rectangular slot under are identical；
The inner wall shape and size of the outer wall shape and size of upper square bar and upper rectangular slot be adapted, under rectangular slot
The shapes and sizes of inner wall and lower square bar are adapted, in use, upper rectangular slot is adjusted to normotopia, upper rectangular slot and lower section
Shape slot is square groove, and normotopia is exactly two side levels up and down of upper rectangular slot, then that upper square bar and lower square bar is same
When is inserted into upper rectangular slot respectively, and completion positions in rectangular slot under.Upper rectangular slot probably first can be adjusted into a position,
Upper rectangular slot can be adjusted by screwing fastening inserted sheet, when cannot be inserted into simultaneously, can appropriate adjustment position at any time, until all
Until capable of being fully inserted into, limitation fastening inserted sheet rotation is thus haved the function that, the effect of U-shaped plug-in unit is mainly exactly to fastening
Shaft carries out initial alignment, so that, the angles and positions of two fastening inserted sheets can just be inserted into two holes of the bottom of five spring hole scokets
It is interior, U-shaped plug-in unit can be removed after insertion.
All other routes in addition to power supply line pair both pass through and put in winding drum by the shaft end of winding drum after mounting shell
It in cavity, and stretches out, is then wound around on winding drum from the lateral through aperture of winding drum, stretch out mounting shell later and connect
To shell.
Housing tip is additionally provided with buckle, and energy temporary card is in the buckle after driven rod is extracted out out of through-hole.The component
Use process are as follows: take out driven rod out of buckle, then rotate transverse link to above sliding block so that through-hole with it is right above and below slot
It answers, then in driven rod insertion through-hole and slot, will then pull slide bar or transverse link from top to bottom and then is moved with movable slider
Dynamic, effect mainly facilitates adjustment sliding block mobile, because sometimes shell is excessive, finger may reach sliding block, therefore
In this way, so that the movement of sliding block is more convenient.Buckle is exactly conventional buckles just.
Photoswitch is 1*8 photoswitch or 1*16 photoswitch or other 1 to 32 channel switch.
Advantageous effect:
One kind being based on high-precision multi-channel type temperature-measuring system of distributed fibers, uses telecommunication optical fiber as sensor.Point
The optical fiber of cloth optical fiber temperature measurement system is both transmission medium and sensor.Thermometric be then according to the optical time domain reflection of optical fiber and
The temperature effect of the spontaneous scattering of optical fiber designs the temperature monitoring system of realization.High-speed driving circuit triggers laser and issues one
Narrow spaces laser pulse, laser pulse pass through the road 1*8 or the road 1*16 after wavelength division multiplexer along sensor fibre after constant temperature box
Photoswitch onwards transmission, laser pulse and optical fiber interaction of molecules generate a variety of faint backscatterings, including Rayleigh
(Rayleigh) scattering, Brillouin (Brillouin) scattering and Raman (Raman) scattering etc., wherein Raman scattering is due to light
The thermal vibration of fine molecule generates Stokes (Stokes) light and temperature sensitive anti-Stokes of temperature-insensitive
(Anti-Stokes) light learns that the wavelength of the two is different according to the characteristic of back scattering spectrogram in optical fiber, back-scattering light
It is detected after WDM wavelength division multiplexer separates by highly sensitive detector APD, carries out photoelectric signal transformation.Anti- in optical fiber
Stokes light intensity is modulated by ambient temperature, and the light intensity ratio of Anti-Stokes and Stokes have accurately reflected temperature information；It is different
The Raman scattering signal of position be back to APD detector time be it is different, determined according to spread speed of the light in light
Set a distance is remoter, and delay is longer.It can determine fiber position corresponding to scattered signal by measuring the echo time i.e.；Pass through height
Velocity signal capturing is completed to go out temperature data with the comparing calculation of the temperature reference curve in later period after multiple cumulative mean, can it is accurate,
Rapidly obtain the temperature distribution information of any point on whole sensor fibre.Corresponding channel can also be carried out by upper computer software
Management, partition management, alarm parameters management etc..It wherein include enable signal, 1 to 8 channel in 1 to 8 channel in channel management
The setting and reading of fiber lengths information, optical fiber start position information, the parameters such as enabled information of alarming.Include in partition management
To the length, number of partitions of the setting such as subregion of the partitioned parameters of respective channel, new partition, deletion subregion, modification subregion, divide
The setting and reading of the parameter of area's warning message.Alarm parameters management includes the setting of heating alarm threshold value, fire alarm threshold value
The setting and reading of the parameters such as setting, the setting of temperature difference alarm threshold value.
It is mainly contained in the multichannel temperature-measuring system of distributed fibers: the channel 1*8 photoswitch, constant temperature box, WDM wavelength-division
Multiplexer, high-speed pulse light source, APD photoelectric converter, high speed data acquisition system, master controller, upper computer software.Its high speed
Collector is connected to high-speed pulse light source, and high-speed pulse light source is connected to WDM wavelength division multiplexer, and WDM wavelength division multiplexer is connected to
It is 1 channel that the channel 1*8 optical switching system default priority is connected after constant temperature box, and the channel 1*8 photoswitch is connected to temperature-measuring optical fiber.It is high
It is 8k Hz, pulsewidth 5ns that fast light-pulse generator, which is set as internal trigger mode frequency,.When high-speed pulse light source issues 5ns pulsed light
When, high-speed pulse light source triggers high speed acquisition device, and high speed acquisition device carries out the electrical signal collection of reflected light, while pulsed light edge
It is transmitted at a distance after WDM wavelength division multiplexer to constant temperature box, photoswitch, temperature-measuring optical fiber.The back scattering of inside of optical fibre simultaneously
Light is along optical fiber reverse transfer to photoswitch, constant temperature box, WDM wavelength division multiplexer, and optical fiber is divided into after WDM wavelength division multiplexer
Two ways of optical signals is all the way Anti-Stokes optical signal, is all the way Stokes optical signal.Two ways of optical signals is linked into simultaneously
Two ways of optical signals is converted to a certain range of electric signal and exported to high speed acquisition by APD photoelectric converter, ADP photoelectric converter
Device.High speed acquisition device sends data to master controller after collected two ways of optical signals is carried out corresponding algorithm process, main
Controller determines whether warning information, why carries out corresponding linkage processing if any warning information.Master controller will measure simultaneously
Temperature data and position data are transmitted to upper computer software, and software is shown accordingly.Master controller after the completion of 1 channel measurement
Control photoswitch is switched into 2 channels and carries out the acquisition of temperature monitoring data, is sequentially acquired with this.Acquisition order can be by upper
Position machine is arranged accordingly.1 to 8 channel can also carry out enabling or closing accordingly by host computer.
The multichannel temperature-measuring system of distributed fibers host computer is divided into display module, division module, alarm module, calibrating die
Block, data analysis module etc..
The utility model has the advantages that and advantage:
1. the utility model can customize Measurement channel quantity according to photoswitch number of channels；
2. the single channel measurement distance sensing of the utility model is 0 to 10KM, thermometric resolution ratio is 0.1 DEG C, and accuracy is
±1℃；
It, can effective accurate measurements temperature 3. the utility model can be applied to high-strength magnetic interference environment；
4. the utility model can continuous temperature measurement, real-time display temperature curve, can displays temperature and location information, can more windows
Mouth is shown with window；.
5. any position that the utility model can correspond to different channels carries out the alarm of temperature subregion, subregion alarm number is unlimited
System, alarm parameters early-warning parameters can self-setting as needed.
6. the utility model can carry out uninterrupted monitoring in 7x24 hours to the temperature of monitoring point, temperature data can store 3
Year or more.
7, the utility model is by the way of shell and hanging mechanisms, in use, directly hanging mechanisms can be passed through will be whole
The mounting of a system on the wall, while mounting, connect by socket, facilitates making effective use of for space, meanwhile, electric wire and other lines
The problem of road is all accommodated in hanging mechanisms, is not in unsightly with security risk, the position of system rest is flexible, such as truly
Needs far from socket, electric wire can also be pulled out out of hanging mechanisms, realize flexibly use, in addition, plug insertion insert
When seat, tightening operation is carried out, prevents plug from falling bring security risk.Moreover, it is directly articulated on existing socket, nothing
Mounting bracket need to be separately punched, using very convenient flexible.
Detailed description of the invention
The present invention will be further described with reference to the accompanying drawings and examples.
Fig. 1 is the overall system architecture schematic diagram of the utility model；
Fig. 2 is the software module block diagram of the utility model；
Fig. 3 is the usage state diagram of shell mounting；
Fig. 4 is the preparation state diagram before shell mounting；
Fig. 5 is the rear wall structural schematic diagram for mounting shell；
The front side wall structural schematic diagram of the position Fig. 6 mounting shell；
The position Fig. 7 shows the schematic diagram of ratchet position；
Fig. 8 takes over hand schematic diagram for U-shaped plug-in unit；
Fig. 9 is case top structural schematic diagram.
Specific embodiment
The utility model is described in further detail with reference to the accompanying drawings and embodiments.
One kind being based on high-precision multi-channel type temperature-measuring system of distributed fibers, it is characterised in that: the system includes high speed
Light-pulse generator, WDM wavelength division multiplexer, constant temperature box, photoswitch, APD photoelectric converter, high speed data acquisition system, master controller and
PERCOM peripheral communication and DO linkage interface；
High-speed pulse light source connects WDM wavelength division multiplexer and high speed data acquisition system, and WDM wavelength division multiplexer connects constant temperature box
With APD photoelectric converter, constant temperature box connects photoswitch；APD photoelectric converter connects high speed data acquisition system, high-speed data acquisition
Device connects master controller, and master controller connects PERCOM peripheral communication and DO linkage interface；
Constant temperature box connects master controller with photoswitch.
The system further includes power supply and filter circuit, and power supply and filter circuit main function are to provide needed for complete machine work
Power supply, filter guarantee the degree of purity of supply power supply.
Photoswitch connects temperature sensing optical fiber, and master controller connects host computer.
High-speed pulse light source, WDM wavelength division multiplexer, constant temperature box, photoswitch, APD photoelectric converter, high-speed data acquisition
Device, power supply and filter circuit, master controller and PERCOM peripheral communication and DO linkage interface are arranged in shell 1；
The system further includes hanging mechanisms, and the intracorporal power supply of shell is connected to plug as power input by power supply line 1-1；
Hanging mechanisms include mounting shell 2, winding drum 3 and fastening shaft 5；The setting of winding drum 3 is inserted in mounting shell 2
In mounting shell 2, the inserted sheet 11-1 of plug stretches out the front side wall of shell for the main body setting of head；In use, inserted sheet 11-1 insertion five
In two holes on the top of spring hole scoket.
Fastening shaft 5 be left and right (left and right in such as Fig. 5) two, two fastening shafts 5 pass through the lower part for mounting shell 2 and
The front end of fastening shaft 5 is connected with fastening inserted sheet 5-1, and two fastening inserted sheet 5-1 stretch out the front side wall of mounting shell 2, two fastenings
Two holes of bottom side by side in three hole of lower part of corresponding five spring hole scokets in the direction of inserted sheet 5-1 and position, that is to say, that general
Five spring hole scokets are two hole of top, and three hole of lower part, three hole of lower part is the form of triangle arrangement, that is, one, top hole, lower parallel two
A hole, and in the application, in use, in two holes of the lower parallel that two fastening inserted sheet 5-1 can just be inserted into three hole jacks,
The rear wall of mounting shell 2 is stretched out in the rear end for fastening shaft 5；
It mounts and is provided with hanging part and fastener on the rear wall of shell 2；Hanging part includes link 6 and top tight pieces, and link 6 is solid
It is scheduled on the rear wall of mounting shell 2, top tight pieces include sliding rail 7 and can (be exactly laterally laterally left and right shown in fig. 5 on sliding rail 7
Direction) mobile sliding block 8, the top of link 6 is arranged in sliding rail 7, and sliding block 8 can be in link 6 and sliding laterally
Surface or the surface for leaving link 6；
Fastener includes two compressor arms 9 and two poke rods 10, and two poke rods 10 are respectively fitted over by change 10-1
Left and right two fastening shaft 5 rear end, and poke rod 10 can relative to fastening shaft 5 rotate, the change 10-1 of poke rod 10 with
Torsional spring 10-2 is provided between fastening shaft 5；
The upper end of two compressor arms 9 is movably connected by upper shaft 9-1, forms herringbone structure, two compressions
The lower end of bar 9 respectively connects the upper end of two poke rods 10 in left and right, compressor arm 9 and poke rod 10 and is connected by lower rotary shaft 9-2 activity
It connects, in use, by the upper end for pushing two compressor arms 9, so that two poke rods 10 rotate outward, i.e., as shown in figure 5, the left side
Change 10-1 rotate counterclockwise, the change 10-1 on the right is rotated clockwise, two poke rods 10 rotate during to torsional spring
10-2 makes fastening shaft 5 have the tendency that a rotation energetically, so that two fastenings in five spring hole scoket lower opening of insertion are inserted
The frictional force that fastening is formed between piece 5-1 and socket aperture prevents mounting shell 2 from falling off；Fastening shaft 5 is driven to revolve by torsional spring 10-2
Turn, on the one hand prevents the 5 hardness rotation of fastening shaft from causing socket or fastening the damage of inserted sheet 5-1, on the other hand, so that fastening
Inserted sheet 5-1 and jack elastic tensioning, fastening effect are more preferable.
Shell 1 is provided with the hook hung on link 6 when use to the side of mounting shell 2 above, which includes perpendicular insert
6-1 and crossbeam 6-2, perpendicular slotting 6-1 are vertically set on one end of crossbeam 6-2, and the other end of crossbeam 6-2 connects shell 1；In use,
It hangs on link 6 and during mounting, the upper end that perpendicular slotting 6-1 withstands two compressor arms 9 moves down；
The slide bar 1-3, slide bar 1-3 that the top of shell 1 is provided with top sliding slot 1-2 and can move in the sliding slot 1-2 of top
Mobile direction is identical as 8 moving direction of sliding block, and the top of slide bar 1-3 is provided with transverse link 1-4, transverse link 1-4 and cunning
Bar 1-3 is vertical, and one end of transverse link 1-4 is covered by lantern ring 1-4-1 enables lantern ring 1-4-1 to drive cross on the top slide bar 1-3
It is rotated to connecting rod 1-4 by axis of slide bar 1-3, i.e., as shown in figure 9, transverse link 1-4 rotation is formed by face perpendicular to drawing；
The other end of transverse link 1-4 is provided with the through-hole 1-4-2 for driven rod 1-5 insertion；
The upper end of sliding block 8 is provided with the slot 8-1 for driven rod 1-5 insertion, when transverse link 1-4 is rotated to sliding block 8
Fang Shi, through-hole 1-4-2 can be corresponding with slot 8-1 or more；
Driven rod 1-5 is the structure that can be extracted out out of through-hole 1-4-2.
Winding drum 3 is hollow roller frame, and power supply line 1-1 is put in the sky of winding drum 3 by the shaft end of winding drum 3
It is intracavitary, and stretched out from the lateral through aperture of winding drum 3, it is then wound around on winding drum 3, stretches out mounting shell 2 later and connect
It is connected to shell 1.
Handle or turntable that control winding drum 3 rotates are provided on one end side wall of mounting shell 2.
The system further includes initial alignment part, the initial alignment part be a U-shaped plug-in unit, U-shaped plug-in unit include top bar 5-3 and
Lower square bar 5-4, upper square bar 5-3 are connected with lower square bar 5-4 by column 5-5,
The middle part of fastening shaft 5 is provided with upper rectangular slot 5-2, is provided on the mounting shell 2 of the bottom of change 10-1
Rectangular slot 2-3 under corresponding with slot 5-2 or more rectangular on this, upper rectangular slot the 5-2 inner wall of rectangular slot 2-3 under
Shapes and sizes are identical；
The inner wall shape and size of the outer wall shape and size of upper square bar 5-3 and upper rectangular slot 5-2 are adapted, under it is rectangular
The shapes and sizes of the inner wall of slot 2-3 and lower square bar 5-4 are adapted, in use, upper rectangular slot 5-2 is adjusted to normotopia,
Upper rectangular slot 5-2 rectangular slot 2-3 under is square groove, and normotopia is exactly the two side water up and down of upper rectangular slot 5-2
It puts down, upper square bar 5-3 and lower square bar 5-4 is then inserted into upper rectangular slot 5-2 respectively simultaneously, and completion is fixed in rectangular slot 2-3 under
Position.Upper rectangular slot 5-2 probably first can be adjusted into a position, upper rectangular slot can be adjusted by screwing fastening inserted sheet 5-1
5-2 when cannot be inserted into simultaneously, thus can reach limitation until it can be fully inserted into appropriate adjustment position at any time
Fasten inserted sheet 5-1 rotation effect, the effect of U-shaped plug-in unit be mainly exactly to fastening shaft 5 progress initial alignment so that, two
In two holes of the bottom that the angles and positions of fastening inserted sheet 5-1 can just be inserted into five spring hole scokets, U-shaped can be removed after insertion and is inserted
Part.
All other routes in addition to power supply line pair both pass through and put in winding drum 3 by the shaft end of winding drum 3 after mounting shell 2
Cavity in, and from the lateral through aperture of winding drum 3 stretch out, be then wound around on winding drum 3, later stretch out mounting shell 2
And it is connected in shell 1.
1 top of shell is additionally provided with buckle 1-6, and energy temporary card is in the buckle after driven rod 1-5 is extracted out out of through-hole 1-4-2
In 1-6.The use process of the component are as follows: take out driven rod 1-5 out of buckle 1-6, then rotate transverse link 1-4 to sliding block
8 tops, so that through-hole 1-4-2 is corresponding with slot 8-1 or more, then from top to bottom by driven rod 1-5 insertion through-hole 1-4-2 and slot 8-
In 1, slide bar 1-3 or transverse link 1-4 is then pulled in turn with the movement of movable slider 8, effect mainly facilitates adjustment sliding block 8
Mobile, because sometimes shell is excessive, finger may reach sliding block 8, therefore in this way, so that the shifting of sliding block 8
It moves more convenient.Buckle 1-6 is exactly conventional buckles just.
Photoswitch is 1*8 photoswitch or 1*16 photoswitch or other 1 to 32 channel switch.
It is as shown in Figure 1 the overall system architecture schematic diagram of the utility model, the utility model devises a kind of based on more
The distributed optical fiber temperature measurement decorum in channel.It is by high-speed pulse light source, WDM wavelength division multiplexer, constant temperature box, 1*8 photoswitch, APD
Photoelectric converter, high speed data acquisition system, master controller, PERCOM peripheral communication and DO linkage interface, power supply and filter circuit, host computer
11 part such as software, temperature sensing optical fiber composition.The effect of high-speed pulse light source exports for trigger signal and high-speed pulse light source output,
The light pulse of output is 5 to 10ns, and repetition rate is 8 to 32KHz.The effect of WDM wavelength division multiplexer is optical coupling and light point
From, the optical signal that high-speed pulse light source generates is couple output public port by it, while by the reflection signal of public port into
The separation of row light, isolates Anti-Stokes optical signal and Stokes optical signal.The effect of constant temperature box is the temperature inside optical signal
Reference point, the inner disk fibre length of constant temperature box are 200 meters, carry out heated at constant temperature to its 200 meters optical fiber, heating temperature is
40 ± 0.1 DEG C, this temperature is internal operating temperature with reference to using, and prevents optical path temperature drift.The effect of 1*8 photoswitch is temperature-sensitive
Temperature sensing optical fiber outside 8 tunnels is respectively connected to system and carries out optical fiber temperature-measurement by the extension of optical fiber interface port number, this photoswitch can be divided into 1
It is 8 channel photoswitches to 32 channels, used in this system.The effect of APD photoelectric converter is to be converted to two ways of optical signals
A certain range of electric signal is exported to high speed collector, is 2 road photodiodes inside it, photodiode becomes optical signal
By being amplified after trans-impedance amplifier by 3 grades of linear amplifier circuits after electric signal.Period guarantees every level-one Linear Amplifer
The signal insatiable hunger of circuit is undistorted, guarantees signal-to-noise ratio with higher.Signal is amplified to the collectable range of high speed acquisition device, defeated
Electric signal transmission out is to high speed data acquisition system.The effect of high speed data acquisition system is the electricity for exporting APD photoelectric converter
Signal is acquired (AD conversion), and the data of acquisition are carried out corresponding accumulation process, is packaged data simultaneously after the completion of processing
Issue master controller.The effect of master controller is will be at the data of high speed data acquisition system algorithm corresponding with constant temperature box progress
Reason, while 1*8 photoswitch is controlled, corresponding channel switching is carried out, according to corresponding warning message linkage PERCOM peripheral communication and DO
Linkage interface.PERCOM peripheral communication and the effect of DO linkage interface be can external external communication interface alarm host machine or alarm, go out
Fiery bullet etc..Power supply needed for power supply and filter circuit main function are to provide complete machine work, filter guarantee supply power supply
Degree of purity.Upper computer software is then that can be shown to the temperature information of whole system, analyze, demarcate, controlling.Complete machine work
Make principle are as follows: it is 8 to 32k Hz that high-speed pulse light source, which is arranged to internal trigger mode frequency, and pulsewidth is 5 to 10ns.When high rapid pulse
When washing source sending 5 to 10ns pulsed light off, high-speed pulse light source triggers high speed acquisition device, and high speed acquisition device carries out the electricity of reflected light
Signal acquisition, while high-speed pulse optical transport, to WDM wavelength division multiplexer, wavelength division multiplexer couples it to common end, common end
Mouth is output to photoswitch after being connected to constant temperature box, and photoswitch switches to the remote of the temperature-measuring optical fiber progress 1 to 10KM in certain channel
Transmission.The rear orientation light of inside of optical fibre is along optical fiber reverse transfer to photoswitch, constant temperature box, WDM wavelength division multiplexer, warp simultaneously
Optical fiber is divided into two ways of optical signals after crossing WDM wavelength division multiplexer, is all the way Anti-Stokes optical signal, is all the way Stokes light
Signal.Two ways of optical signals is linked into APD photoelectric converter simultaneously, ADP photoelectric converter by two ways of optical signals be converted to 0 to
The electric signal of 5V is exported to high speed collector.Collected two ways of optical signals is carried out corresponding repeatedly add up simultaneously by high speed acquisition device
It is averaging and calculates and send data to master controller, main control after calculated result and temperature reference curve are compared calculating
Device determines whether warning information, and warning information is then the intrinsic temperature value of host computer setting, reads and judges Current Temperatures
Whether value has the temperature higher than desired temperature, as be higher than desired temperature if generate warning information, if any warning information then into
The corresponding linkage processing of row.Alarm host machine can be controlled by the DO interface outputs level signals of equipment, while master controller will be surveyed
The temperature data and position data obtained is transmitted to upper computer software, and software is shown accordingly.Master control after the completion of 1 channel measurement
Device processed will control photoswitch and switch to the progress temperature monitoring data acquisition of 2 channels, and complete machine collection process will sequentially be adopted with this
Collection.Acquisition order can be arranged accordingly by host computer.1 to 8 channel can also by host computer carry out accordingly enable or
It closes.
It is illustrated in figure 2 the software module block diagram of the utility model, which includes display function modules, multi-section display function
It can module, warning function parameter module, calibration function module, data function analysis module, data storage function module, interface control
7 functional modules such as functional module processed.Display function module is mainly to the arrangement of software interface and the display function of data, packet
The display of warning information is included, temperature data is shown, position data is shown, historical data is shown.Multi-section display functional module
Partition management mainly is carried out convenient for field application and the temperature monitoring of special area, partition area to the temperature measuring distance in different channels
It domain can more windows or schoolmate's progress temperature display and alarm display.Warning function parameter module can alarm or early warning to whole system
Information parameter, threshold value etc. are managed and set, user-friendly.Calibration function module can carry out temperature to whole system
Calibration, the setting etc. of optical fibre refractivity use convenient for engineering opening.Data function analysis module can temperature curve to history into
The corresponding analysis of row, judges the temperature trend of some monitoring point, can whether there is or not hidden danger generations according to Trend judgement.Data storage function
Module can carry out corresponding survey to the temperature and location information of monitoring and store, and can access corresponding warning information etc. simultaneously.Interface control
Functional module linkage 4G digital transmission module processed or other DO/DI interface equipments, make the extension of whole system become more flexible.
Corresponding warning message can be sent by short message form.
In use, first as shown in figure 4, inserted sheet 11-1 and fastening inserted sheet 5-1 are inserted into the upper and lower part of socket respectively
In jack, U-shaped plug-in unit is then pulled out, sliding block 8 is moved to the position for leaving link 6 as shown in Figure 4 later, then by shell
Hook on 1 is hooked on link 6, as shown in Fig. 2, simultaneously, erecting slotting 6-1 and pushing two compressor arms 9, so that two compressions
Bar 9 drives two poke rods 10 to rotate, so that two poke rods 10 drive fastening shaft 5 to rotate by torsional spring 10-2, this
When, fastening inserted sheet 5-1 has the power screwed, the power screwed by this will fasten inserted sheet 5-1 firmly tensioner in jack,
Completion is fixedly positioning, and crossbeam 6-2 is then blocked in the top (being exactly as stirred to the right in Fig. 4) that sliding block 8 dials to crossbeam 6-2,
When needing shell 1 far from socket, by sliding block 8 dial from, remove shell, then take one replace block insertion link 6 in, effect be
Instead of perpendicular slotting 6-1 to the suppressing action of two compressor arms 9, then reverses sliding block 8 and block instead of block, pull shell 1 later, drawing
In dynamic process, electric wire 1-1 by from mounting shell 2 in pulled out, winding drum 3 rotate, until movement terminate, in order to prevent bracing wire or
When person's take-up, electric wire excessively screws in winding drum 3, and it is intracavitary in winding drum 3 can to reserve sufficiently long line；It needs
When shell being hung on a wall again, then by handle or turntable winding drum 3 is rotated backward, electric wire is driven to recycle into mounting
In shell 2, the operation for mounting shell is then repeated.
Claims (10)
1. one kind is based on high-precision multi-channel type temperature-measuring system of distributed fibers, it is characterised in that: the system includes high rapid pulse
Wash source, WDM wavelength division multiplexer, constant temperature box, photoswitch, APD photoelectric converter, high speed data acquisition system, master controller and outer off
Portion's communication and DO linkage interface；
High-speed pulse light source connects WDM wavelength division multiplexer and high speed data acquisition system, WDM wavelength division multiplexer connect constant temperature box and
APD photoelectric converter, constant temperature box connect photoswitch；APD photoelectric converter connects high speed data acquisition system, high speed data acquisition system
Master controller is connected, master controller connects PERCOM peripheral communication and DO linkage interface；
Constant temperature box connects master controller with photoswitch.
2. according to claim 1 a kind of based on high-precision multi-channel type temperature-measuring system of distributed fibers, feature exists
In: the system further includes power supply and filter circuit, power supply needed for power supply and filter circuit main function are to provide complete machine work
Supply, filter guarantee the degree of purity of supply power supply.
3. according to claim 1 or 2 a kind of based on high-precision multi-channel type temperature-measuring system of distributed fibers, feature
Be: photoswitch connects temperature sensing optical fiber, and master controller connects host computer.
4. according to claim 2 a kind of based on high-precision multi-channel type temperature-measuring system of distributed fibers, feature exists
In: high-speed pulse light source, WDM wavelength division multiplexer, constant temperature box, photoswitch, APD photoelectric converter, high speed data acquisition system, power supply
And filter circuit, master controller and PERCOM peripheral communication and the setting of DO linkage interface are in shell (1)；
The system further includes hanging mechanisms, and the intracorporal power supply of shell is connected to plug as power input by power supply line (1-1)；
Hanging mechanisms include mounting shell (2), winding drum (3) and fastening shaft (5)；Winding drum (3) setting is in mounting shell (2)
Interior, in mounting shell (2), the inserted sheet (11-1) of plug stretches out the front side wall of shell for the main body setting of plug；
Fastening shaft (5) is left and right two, before two fastenings shaft (5) pass through the lower part of mounting shell (2) and fastening shaft (5)
End is connected with fastening inserted sheet (5-1), and two fastenings inserted sheet (5-1) stretch out the front side wall of mounting shell (2), two fastening inserted sheet (5-
1) two holes of bottom side by side in three hole of lower part of corresponding five spring hole scokets in direction and position, the rear end of fastening shaft (5) is stretched
The rear wall of shell (2) is mounted out；
It mounts and is provided with hanging part and fastener on the rear wall of shell (2)；Hanging part includes link (6) and top tight pieces, link (6)
Be fixed on mounting shell (2) rear wall on, top tight pieces include sliding rail (7) and can on sliding rail (7) transverse shifting sliding block (8),
Sliding rail (7) setting in the top of link (6), and sliding block (8) can be in and sliding laterally link (6) surface or
Leave the surface of link (6)；
Fastener includes two compressor arms (9) and two poke rods (10), and two poke rods (10) pass through change (10-1) difference
It covers in the rear end of two fastenings shaft (5) in left and right, and poke rod (10) can be relative to fastening shaft (5) rotation, poke rod (10)
Change (10-1) and fastening shaft (5) between be provided with torsional spring (10-2)；
The upper end of two compressor arms (9) is movably connected by upper shaft (9-1), forms herringbone structure, two compressions
The lower end of bar (9) respectively connects the upper end of two poke rods (10) in left and right, and compressor arm (9) and poke rod (10) pass through lower rotary shaft
(9-2) is flexibly connected, in use, by the upper end for pushing two compressor arms (9), so that two poke rods (10) rotate outward,
Fastening shaft (5) is made to have the tendency that a rotation energetically to torsional spring (10-2) during two poke rod (10) rotations, into
And make the frictional force that fastening is formed between two be inserted into five spring hole scoket lower opening fastenings inserted sheet (5-1) and socket aperture；
Shell (1) is provided with the hook hung on link (6) when use to the side of mounting shell (2) above, which includes perpendicular
(6-1) and crossbeam (6-2) are inserted, perpendicular slotting (6-1) is vertically set on one end of crossbeam (6-2), and the other end of crossbeam (6-2) connects shell
Body (1)；In use, hanging on link (6) and during mounting, perpendicular slotting (6-1) withstands the upper of two compressor arms (9)
End moves down；
The slide bar (1-3) that top sliding slot (1-2) and can be moved in top sliding slot (1-2), slide bar are provided at the top of shell (1)
(1-3) mobile direction is identical as sliding block (8) moving direction, and the top of slide bar (1-3) is provided with transverse link (1-4), laterally
Connecting rod (1-4) is vertical with slide bar (1-3), and one end of transverse link (1-4) is covered by lantern ring (1-4-1) on the top slide bar (1-3)
So that lantern ring (1-4-1) can drive transverse link (1-4) with slide bar (1-3) for axis rotation；
The other end of transverse link (1-4) is provided with the through-hole (1-4-2) for driven rod (1-5) insertion；
The upper end of sliding block (8) is provided with the slot (8-1) for driven rod (1-5) insertion, when transverse link (1-4) rotation to sliding block
(8) when top, through-hole (1-4-2) can be corresponding up and down with slot (8-1)；
Driven rod (1-5) is the structure that can be extracted out out of through-hole (1-4-2).
5. according to claim 4 a kind of based on high-precision multi-channel type temperature-measuring system of distributed fibers, feature exists
In: winding drum (3) is hollow roller frame, and power supply line (1-1) puts in winding drum (3) by the shaft end of winding drum (3)
Cavity in, and from the lateral through aperture of winding drum (3) stretch out, be then wound around on winding drum (3), later stretch out mounting
Shell (2) is simultaneously connected to shell (1).
6. according to claim 5 a kind of based on high-precision multi-channel type temperature-measuring system of distributed fibers, feature exists
In: the handle or turntable of control winding drum (3) rotation are provided on one end side wall of mounting shell (2).
7. according to claim 4 a kind of based on high-precision multi-channel type temperature-measuring system of distributed fibers, feature exists
In: the system further includes initial alignment part, the initial alignment part be a U-shaped plug-in unit, U-shaped plug-in unit include top bar (5-3) and under
Square bar (5-4), upper square bar (5-3) and lower square bar (5-4) are connected by column (5-5),
It is provided with upper rectangular slot (5-2) in the middle part of fastening shaft (5), is set on the mounting shell (2) of the bottom of change (10-1)
Be equipped with slot (5-2) rectangular on this up and down it is corresponding under rectangular slot (2-3), upper rectangular slot (5-2) under rectangular slot
The shapes and sizes of the inner wall of (2-3) are identical；
The inner wall shape and size of the outer wall shape and size of upper square bar (5-3) and upper rectangular slot (5-2) are adapted, under it is rectangular
The shapes and sizes of the inner wall of slot (2-3) and lower square bar (5-4) are adapted, in use, by upper rectangular slot (5-2) adjust to
Upper square bar (5-3) and lower square bar (5-4) are then inserted into upper rectangular slot (5-2) rectangular slot (2- under by normotopia respectively simultaneously
3) positioning is completed in.
8. according to claim 5 a kind of based on high-precision multi-channel type temperature-measuring system of distributed fibers, feature exists
Winding drum is put in by the shaft end of winding drum (3) after: All other routes in addition to power supply line pair both pass through mounting shell (2)
(3) it in cavity, and is stretched out from the lateral through aperture of winding drum (3), is then wound around on winding drum (3), stretches out later
Mounting shell (2) is simultaneously connected in shell (1).
9. according to claim 4 a kind of based on high-precision multi-channel type temperature-measuring system of distributed fibers, feature exists
In: shell (1) top is additionally provided with buckle (1-6), and energy temporary card is at this after driven rod (1-5) is extracted out out of through-hole (1-4-2)
It buckles in (1-6).
10. according to claim 1 a kind of based on high-precision multi-channel type temperature-measuring system of distributed fibers, feature exists
In: photoswitch is 1*8 photoswitch or 1*16 photoswitch or other 1 to 32 channel switch.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110967124A (en) * | 2019-12-30 | 2020-04-07 | 南京曦光信息科技有限公司 | Dual-wavelength multichannel distributed optical fiber temperature measurement system |
| US20220011174A1 (en) * | 2020-07-09 | 2022-01-13 | Guoxing Huijin Shenzhen Technology Co., Ltd. | Temperature measuring method of distributed multi-section optical fibers, system and storage medium |
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2019
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110967124A (en) * | 2019-12-30 | 2020-04-07 | 南京曦光信息科技有限公司 | Dual-wavelength multichannel distributed optical fiber temperature measurement system |
| US20220011174A1 (en) * | 2020-07-09 | 2022-01-13 | Guoxing Huijin Shenzhen Technology Co., Ltd. | Temperature measuring method of distributed multi-section optical fibers, system and storage medium |
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