CN109708776A - A kind of electronic system and its implementation of the temperature-measuring system of distributed fibers of Larger Dynamic temperature-measuring range - Google Patents
A kind of electronic system and its implementation of the temperature-measuring system of distributed fibers of Larger Dynamic temperature-measuring range Download PDFInfo
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Abstract
The invention discloses the electronic systems and its implementation of a kind of temperature-measuring system of distributed fibers of Larger Dynamic temperature-measuring range for being related to cloth Fiber Optic Pyrometer field, optical signalling module is connect with Stcoks photoelectric conversion module, Anti-Stocks photoelectric conversion module respectively, and Stcoks photoelectric conversion module, Anti-Stocks photoelectric conversion module are separately connected one end of the first programme-controlled gain signal conditioning module, the second programme-controlled gain signal conditioning module；First programme-controlled gain signal conditioning module, the second programme-controlled gain signal conditioning module the other end be separately connected data acquisition and processing module；Data acquisition and processing module are connect with industrial computer, for Larger Dynamic temperature-measuring range, the phenomenon that temperature-measuring system of distributed fibers is easy to cause signal to be saturated when measuring high temperature, the scheme synthesized using program-controlled timesharing adjust gain, acquisition time, curve segmentation, efficiently solve the insufficient problem of system thermometric dynamic range, the configuration of the present invention is simple, practical, easy to use and popularization.
Description
Technical field
The present invention relates to distributed optical fiber temperature measurement technical field, the distribution type fiber-optic of specifically a kind of Larger Dynamic temperature-measuring range
The electronic system and its implementation of temp measuring system.
Background technique
Temperature-measuring system of distributed fibers (hereinafter referred to as DTS system) is widely used in various fire hazard monitoring scenes, such as highway
The scenes such as tunnel, subway tunnel, the power cable tunnel of electric power power plant, petrochemical industry oil storage tank.DTS system is a kind of based on light
The temperature measurement system that time-domain reflectomer (OTDR) and Raman scattering principle develop, temperature sensor are that optical fiber is (usual
It is fabricated to optical cable), DTS system utilizes the Ramam effect of optical fiber, i.e. optical fiber has been modulated in the temperature field of optical fiber paving location (space)
The backward Raman scattering light of middle transmission can demodulate the real time temperature information in temperature field after photoelectric conversion and signal processing.
DTS system demodulates temperature information according to Raman scattering principle, since Raman diffused light is very faint, usually
Using avalanche diode (APD) be used as photoelectric converter, and avalanche diode generate small-signal amplify, then into
Row data acquisition and processing (DAP).But when system detection temperature range (range) become larger when, such as detection temperature range be -55 °C ~
At 350 °C, since dynamic range is too big, the dynamic range of signal conditioning circuit is inadequate, is easy to cause front end signal saturation then
The still very weak situation of end signal is difficult to meet actual requirement using conventional electronics processing method.
Summary of the invention
The purpose of the present invention is to provide a kind of electronics systems of the temperature-measuring system of distributed fibers of Larger Dynamic temperature-measuring range
System and its implementation, to solve the problems mentioned in the above background technology.
To achieve the above object, the invention provides the following technical scheme:
A kind of electronic system of the temperature-measuring system of distributed fibers of Larger Dynamic temperature-measuring range, including optical signalling module,
It is Stcoks photoelectric conversion module, Anti-Stocks photoelectric conversion module, the first programme-controlled gain signal conditioning module, second program-controlled
Gain signal conditioning module, data acquisition and processing module and industrial computer, the optical signalling module respectively with Stcoks
Photoelectric conversion module, the connection of Anti-Stocks photoelectric conversion module, the Stcoks photoelectric conversion module, Anti-Stocks light
Electric conversion module is separately connected one end of the first programme-controlled gain signal conditioning module, the second programme-controlled gain signal conditioning module；Institute
State the first programme-controlled gain signal conditioning module, the other end of the second programme-controlled gain signal conditioning module be separately connected data acquisition and
Processing module；The data acquisition and processing module are connect with industrial computer.
As a further solution of the present invention: the Stcoks photoelectric conversion module and Anti-Stocks photoelectric conversion mould
Block is made of avalanche diode and trsanscondutance amplifier.
As further scheme of the invention: the first programme-controlled gain signal conditioning module, the second programme-controlled gain letter
Number conditioning module structure having the same, the first programme-controlled gain signal conditioning module, the second programme-controlled gain signal conditioning module are equal
It is made of first order operational amplifier, second level operational amplifier and gain-programmed amplifier, the first order operational amplifier
It is connect respectively with trsanscondutance amplifier and second level operational amplifier, second level operational amplifier connects gain-programmed amplifier；Journey
Control gain amplifier is acquired with data and processing module is connect.
As further scheme of the invention: the data acquisition and processing module are by the first analog-digital converter, second
Analog-digital converter and FPGA composition.First analog-digital converter, the second analog-digital converter respectively with the first programme-controlled gain signal
Conditioning module is connected with the gain-programmed amplifier of the second programme-controlled gain signal conditioning module, first analog-digital converter,
Two analog-digital converters are all connected with FPGA.
As further scheme of the invention: the FPGA includes the first data acquisition controller, the acquisition of the second data
Controller, the first data accumulator, the second data accumulator, the first Curves compilation device, the second Curves compilation device, programme-controlled gain control
Device processed and data output control unit, first data acquisition controller, the second data acquisition controller are separately connected first
Data accumulator and the second data accumulator, the first data accumulator, the second data accumulator are separately connected the first Curves compilation
One end of device and the second Curves compilation device, the programmed gain control device connects the first Curves compilation device and the second Curves compilation
The other end of device, programmed gain control device connects the first programme-controlled gain signal conditioning module and the second programme-controlled gain signal condition mould
Block, the first Curves compilation device and the second Curves compilation device are all connected with data output control unit, data output control unit
Connect industrial computer.
Further object is, proposes a kind of electricity of the temperature-measuring system of distributed fibers of Larger Dynamic temperature-measuring range
The implementation method of sub- system, comprising the following steps:
The first step, the optical signalling module generate the laser pulse signal for having certain repetition rate, and receive laser pulse letter
Number reflected Stocks and Anti-Stocks Raman diffused light；
Second step, the Stcoks photoelectric conversion module, Anti-Stocks photoelectric conversion module are completed photoelectric conversion and are tentatively put
Greatly, output simulation weak voltage signals；
Third step, the first programme-controlled gain signal conditioning module, the second programme-controlled gain signal conditioning module receive come from respectively
The weak voltage signals that Stcoks photoelectric conversion module, Anti-Stocks photoelectric conversion module export, and signal amplification is completed,
Output voltage signal.
4th step, the data acquisition and processing module receive and come from the first programme-controlled gain signal conditioning module, the second journey
Control the voltage signal of gain signal conditioning module output, data acquisition, cumulative and transmission.
5th step, the industrial computer analyze Raman data and demodulate temperature signal.
As further scheme of the invention: the third step and the 4th step, the program-controlled increasing of timesharing to realize signal
Benefit, data acquisition, data accumulation and Curves compilation, implementation step are as follows:
3-1 step, the Stcoks photoelectric conversion module, Anti-Stocks photoelectric conversion module output simulation weak voltage letter
Number；
3-2 step, the data acquisition and processing module adjust the first programme-controlled gain signal conditioning module and the second programme-controlled gain
Signal conditioning module is low gain mode；
3-3 step, the data acquisition and processing module acquire the first programme-controlled gain signal conditioning module and the second programme-controlled gain
The voltage signal of signal conditioning module output, and complete data accumulation；And export Stocks curve and Anti- after adding up
Stocks curve；
3-4 step, the data acquisition and processing module adjust the first programme-controlled gain signal conditioning module and the second programme-controlled gain
Signal conditioning module is high gain mode；
3-5 step, the data acquisition and processing module acquire the first programme-controlled gain signal conditioning module and the second programme-controlled gain
The voltage signal of signal conditioning module output, and complete data accumulation；And export Stocks curve and Anti- after adding up
Stocks curve；
3-6 step, the data acquisition and processing module complete the Curves compilation of 3-3 step and 3-5 step data accumulation result；
3-7 step, the data of curve of output composite result to the industrial computer.
As further scheme of the invention: the 3-6 step, the method for Curves compilation are as follows:
3-6-1 step, data acquisition and processing module are by the first Curves compilation device inside the FPGA, interception the
First half, the interception 3-5 of the Stocks curve of the accumulation result of 3-3 step walk the later half of the Stocks curve of accumulation result
Portion, be spliced a complete Stocks curve；
3-6-2 step, data acquisition and processing module are by the second Curves compilation device inside the FPGA, interception the
First half, the Anti-Stocks of interception 3-5 step accumulation result of the Anti-Stocks curve of the accumulation result of 3-3 step are bent
Line it is latter half of, be spliced a complete Anti-Stocks curve.
Compared with prior art, the beneficial effects of the present invention are: being directed to Larger Dynamic temperature-measuring range, distributed optical fiber temperature measurement system
The phenomenon that being easy to cause signal to be saturated when unified test amount high temperature uses program-controlled timesharing adjust gain, acquisition time, curve segmentation and closes
At scheme, efficiently solve the insufficient problem of system thermometric dynamic range, the configuration of the present invention is simple, it is practical, be easy to
It uses and promotes.
Detailed description of the invention
Fig. 1 is the system structure diagram of the electronic system of the temperature-measuring system of distributed fibers of Larger Dynamic temperature-measuring range.
Fig. 2 is Stcoks, Anti- in the electronic system of the temperature-measuring system of distributed fibers of Larger Dynamic temperature-measuring range
Stocks photoelectric conversion module structural schematic diagram.
Fig. 3 is the first, second program-controlled increasing in the electronic system of the temperature-measuring system of distributed fibers of Larger Dynamic temperature-measuring range
Beneficial signal conditioning module structural schematic diagram.
Fig. 4 is data acquisition and processing mould in the electronic system of the temperature-measuring system of distributed fibers of Larger Dynamic temperature-measuring range
Block structure schematic diagram.
Fig. 5 is FPGA internal structure signal in the electronic system of the temperature-measuring system of distributed fibers of Larger Dynamic temperature-measuring range
Figure.
Wherein: optical signalling module 1, Stcoks photoelectric conversion module 21, Anti-Stocks photoelectric conversion module 22,
One programme-controlled gain signal conditioning module 31, the second programme-controlled gain signal conditioning module 32, data acquisition and processing module 4, industry
Computer 5, avalanche diode 201, trsanscondutance amplifier 202, first order operational amplifier 301, second level operational amplifier 302,
Gain-programmed amplifier 303, the first analog-digital converter 41, the second analog-digital converter 42, FPGA43, a data acquisition controller
431, the second data acquisition controller 432, the first data accumulator 433, the second data accumulator 434, the first Curves compilation device
435, the second Curves compilation device 436, programmed gain control device 437, data output control unit 438 form.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
Embodiment 1:
Please refer to Fig. 1~5, in the embodiment of the present invention, a kind of electronics of the temperature-measuring system of distributed fibers of Larger Dynamic temperature-measuring range
System, including optical signalling module 1, Stcoks photoelectric conversion module 21, Anti-Stocks photoelectric conversion module 22, first
Programme-controlled gain signal conditioning module 31, the second programme-controlled gain signal conditioning module 32, data acquisition and processing module 4 and industry meter
Calculation machine 5, the optical signalling module 1 connect with Stcoks photoelectric conversion module 21, Anti-Stocks photoelectric conversion module 22 respectively
It connects, the Stcoks photoelectric conversion module 21, Anti-Stocks photoelectric conversion module 22 are separately connected the first programme-controlled gain signal
One end of conditioning module 31, the second programme-controlled gain signal conditioning module 32；The first programme-controlled gain signal conditioning module 31,
The other end of two programme-controlled gain signal conditioning modules 32 is separately connected data acquisition and processing module 4；The data acquisition and place
Reason module 4 is connect with industrial computer 5.
Wherein the function of the optical signalling module 1 is to generate the laser pulse signal for having certain repetition rate, and receive
The reflected Stocks and Anti-Stocks Raman diffused light of laser pulse signal；
The Stcoks photoelectric conversion module 21, Anti-Stocks photoelectric conversion module 22, function are to utilize avalanche diode
Photoelectric conversion is completed, and completes the conversion of electric current to voltage, output simulation weak voltage signals using trsanscondutance amplifier；
The first programme-controlled gain signal conditioning module 31, the second programme-controlled gain signal conditioning module 32, function are to connect respectively
The weak voltage signals exported from Stcoks photoelectric conversion module 21, Anti-Stocks photoelectric conversion module 22 are received, and to this
Signal carries out the settable amplification of gain, then exports amplified voltage signal；
The data acquisition and processing module 4, function are the gains of timesharing adjustment programme-controlled gain signal conditioning module；It completes
Conversion of the analog signal to digital signal；Acquisition time；Data accumulation；Curve segmentation synthesis and data are transferred to industrial calculating
The function of machine；
The industrial computer 5, function are to demodulate temperature signal for calculating Raman signal.
Specifically, the Stcoks photoelectric conversion module 21 and Anti-Stocks photoelectric conversion module 22 are by snowslide two
Pole pipe 201 and trsanscondutance amplifier 202 form, and function is to complete photoelectric conversion using avalanche diode 201, and put using mutual conductance
Big device 202 completes the conversion of electric current to voltage, output simulation weak voltage signals.
Specifically, the first programme-controlled gain signal conditioning module 31, the second programme-controlled gain signal conditioning module 32 have
Identical structure, by first order operational amplifier 301, second level operational amplifier 302 and 303 groups of gain-programmed amplifier
At the first order operational amplifier 301 is connect with trsanscondutance amplifier 202 and second level operational amplifier 302 respectively, the second level
Operational amplifier 302 and gain-programmed amplifier 303 connect；Gain-programmed amplifier 303 and the data acquire and handle mould
Block 4 connects, and the first programme-controlled gain signal conditioning module 31, the function of the second programme-controlled gain signal conditioning module 32 are to receive respectively
The weak voltage signals exported from Stcoks photoelectric conversion module 21, Anti-Stocks photoelectric conversion module 22, utilize first
Grade operational amplifier 301, second level operational amplifier 302 are realized being further amplified for voltage signal, and are put using programme-controlled gain
Final amplification under dynamic range needed for 303 realization system of big device, output voltage signal.The gain-programmed amplifier 303 exists
Under low gain mode, so that front voltage signal is met the requirements and back end signal is faint, and front end signal meets application requirement, rear end
Signal is not able to satisfy application requirement；In the high-gain mode, so that voltage signal front end saturation and rear end small-signal is amplified,
Prevent front end signal is from applying, and back end signal can satisfy application requirement.
The gain-programmed amplifier 303, function are can be posted by external equipment (such as FPGA43) its inside
Storage carries out gain setting, and different amplification factors is arranged, so that its gain is sized for the requirement of application.
Specifically, the data acquisition and processing module 4 are by the first analog-digital converter 41,42 and of the second analog-digital converter
FPGA43 composition.First analog-digital converter 41, the second analog-digital converter 42 respectively with the first programme-controlled gain signal condition mould
Block 31 and the connection of the gain-programmed amplifier 303 of the second programme-controlled gain signal conditioning module 32, while it being all connected with FPGA43, function
It can be the gain of timesharing adjustment the first programme-controlled gain signal conditioning module 31 and the second programme-controlled gain signal conditioning module 32；It completes
Conversion of the analog signal to digital signal；Acquisition time；Data accumulation；Curve segmentation synthesis and data are transferred to industrial calculating
The function of machine 5.
Specifically, the FPGA43, inside by the first data acquisition controller 431, the second data acquisition controller
432, the first data accumulator 433, the second data accumulator 434, the first Curves compilation device 435, the second Curves compilation device 436,
Programmed gain control device 437 and data output control unit 438 form, the first data acquisition controller 431, the acquisition of the second data
Controller 432 is separately connected the first data accumulator 433, the second data accumulator 434, the first data accumulator 433, second number
The first Curves compilation device 435 and the second Curves compilation device 436, the programmed gain control device 437 are separately connected according to accumulator 434
One end connect the first Curves compilation device 435 and the second Curves compilation device 436, the other end connection of programmed gain control device 437
First programme-controlled gain signal conditioning module 31 and the second programme-controlled gain signal conditioning module 32, the first Curves compilation device 435
It is all connected with data output control unit 438 with the second Curves compilation device 436, data output control unit 438 connects industrial calculating
Machine 5.
The FPGA43, function are to complete setting, the data acquisition, data accumulation, Curves compilation of timesharing programme-controlled gain
It is transmitted with data.
Programmed gain control device 437 inside the FPGA43, function are for the gain-programmed amplifier to be arranged
Suitable amplification factor is arranged in 303 internal register.
Embodiment 2:
A kind of implementation method of the temperature-measuring system of distributed fibers of Larger Dynamic temperature-measuring range, includes the following steps:
The first step, the optical signalling module 1 generate the laser pulse signal for having certain repetition rate, and receive laser pulse letter
Number reflected Stocks and Anti-Stocks Raman diffused light；
Second step, the Stcoks photoelectric conversion module 21, Anti-Stocks photoelectric conversion module 22 complete photoelectric conversion simultaneously just
Step amplification, output simulation weak voltage signals；
Third step, the first programme-controlled gain signal conditioning module 31, the second programme-controlled gain signal conditioning module 32 receive respectively
The weak voltage signals exported from Stcoks photoelectric conversion module 21, Anti-Stocks photoelectric conversion module 22, and complete to believe
Number amplification, output voltage signal.
4th step, the data acquisition and processing module 4 receive and come from the first programme-controlled gain signal conditioning module 31, second
The voltage signal that programme-controlled gain signal conditioning module 32 exports, data acquisition, cumulative and transmission.
5th step, the industrial computer 5 analyze Raman data and demodulate temperature signal.
Further, the third step and the 4th step, to realize timesharing programme-controlled gain, the data acquisition, data of signal
Cumulative and Curves compilation implements step are as follows:
Faint electricity is simulated in 3-1 step, the Stcoks photoelectric conversion module 21, the output of Anti-Stocks photoelectric conversion module 22
Press signal；
3-2 step, the data acquisition and processing module 4 adjust the first programme-controlled gain signal conditioning module 31 and the second program-controlled increasing
Beneficial signal conditioning module 32 is low gain mode；
3-3 step, the data acquisition and processing module 4 acquire the first programme-controlled gain signal conditioning module 31 and the second program-controlled increasing
The voltage signal that beneficial signal conditioning module 32 exports, and complete data accumulation；And export Stocks curve and Anti- after adding up
Stocks curve；
3-4 step, the data acquisition and processing module 4 adjust the first programme-controlled gain signal conditioning module 31 and the second program-controlled increasing
Beneficial signal conditioning module 32 is high gain mode；
3-5 step, the data acquisition and processing module 4 acquire the first programme-controlled gain signal conditioning module 31 and the second program-controlled increasing
The voltage signal that beneficial signal conditioning module 32 exports, and complete data accumulation；And export Stocks curve and Anti- after adding up
Stocks curve；
3-6 step, the data acquisition and processing module 4 complete 3-3 step and the curve of 3-5 step data accumulation result closes
At；
3-7 step, the data of curve of output composite result to the industrial computer 5.
Further, 3-2,3-4 step is to complete first by the programmed gain control device 437 inside the FPGA43
The setting of the gain mode of programme-controlled gain signal conditioning module 31 and the second programme-controlled gain signal conditioning module 32.
3-3,3-5 step, data acquisition and processing module 4 acquire control by the first data inside the FPGA43
Device 431 processed and the second data acquisition controller 432 are respectively completed the first programme-controlled gain signal conditioning module 31 and the second program-controlled increasing
The acquisition for the voltage signal that beneficial signal conditioning module 32 exports；Pass through 433 He of the first data accumulator inside the FPGA43
Second data accumulator 434 completes data accumulation.
Further, the 3-6 step, the method for Curves compilation are as follows:
3-6-1 step, the data acquisition and processing module 4 are cut by the first Curves compilation device 435 inside the FPGA43
After the first half of the Stocks curve for the accumulation result for taking 3-3 to walk, the Stocks curve of interception 3-5 step accumulation result
Half portion, be spliced a complete Stocks curve；
3-6-2 step, the data acquisition and processing module 4 are cut by the second Curves compilation device 436 inside the FPGA43
First half, the interception 3-5 of the Anti-Stocks curve for the accumulation result for taking 3-3 to walk walk the Anti- of accumulation result
Stocks curve it is latter half of, be spliced a complete Anti-Stocks curve.
Above-mentioned 3-6-1 and 3-6-2 step, the position of two curves interception, is the same position；According to actual needs, clever
It is living to set the position.
It is obvious to a person skilled in the art that invention is not limited to the details of the above exemplary embodiments, Er Qie
In the case where without departing substantially from spirit or essential attributes of the invention, the present invention can be realized in other specific forms.Therefore, no matter
From the point of view of which point, the present embodiments are to be considered as illustrative and not restrictive, and the scope of the present invention is by appended power
Benefit requires rather than above description limits, it is intended that all by what is fallen within the meaning and scope of the equivalent elements of the claims
Variation is included within the present invention.Any reference signs in the claims should not be construed as limiting the involved claims.
In addition, it should be understood that although this specification is described in terms of embodiments, but not each embodiment is only wrapped
Containing an independent technical solution, this description of the specification is merely for the sake of clarity, and those skilled in the art should
It considers the specification as a whole, the technical solutions in the various embodiments may also be suitably combined, forms those skilled in the art
The other embodiments being understood that.
Claims (8)
1. a kind of electronic system of the temperature-measuring system of distributed fibers of Larger Dynamic temperature-measuring range, including optical signalling module (1),
Stcoks photoelectric conversion module (21), Anti-Stocks photoelectric conversion module (22), the first programme-controlled gain signal conditioning module
(31), the second programme-controlled gain signal conditioning module (32), data acquisition and processing module (4) and industrial computer (5), feature
Be, the optical signalling module (1) respectively with Stcoks photoelectric conversion module (21), Anti-Stocks photoelectric conversion module
(22) it connects, the Stcoks photoelectric conversion module (21), Anti-Stocks photoelectric conversion module (22) are separately connected the first journey
Control one end of gain signal conditioning module (31), the second programme-controlled gain signal conditioning module (32)；The first programme-controlled gain letter
Number conditioning module (31), the second programme-controlled gain signal conditioning module (32) the other end be separately connected data acquisition and processing module
(4)；The data acquisition and processing module (4) are connect with industrial computer (5).
2. the electronic system of the temperature-measuring system of distributed fibers of Larger Dynamic temperature-measuring range according to claim 1, special
Sign is that the Stcoks photoelectric conversion module (21) and Anti-Stocks photoelectric conversion module (22) are by avalanche diode
(201) it is formed with trsanscondutance amplifier (202).
3. the electronic system of the temperature-measuring system of distributed fibers of Larger Dynamic temperature-measuring range according to claim 1, special
Sign is that the first programme-controlled gain signal conditioning module (31), the second programme-controlled gain signal conditioning module (32) have identical
Structure, the first programme-controlled gain signal conditioning module (31), the second programme-controlled gain signal conditioning module (32) are transported by the first order
Amplifier (301), second level operational amplifier (302) and gain-programmed amplifier (303) composition, the first order operation is calculated to put
Big device (301) is connect with trsanscondutance amplifier (202) and second level operational amplifier (302) respectively, second level operational amplifier
(302) gain-programmed amplifier (303) are connected；Gain-programmed amplifier (303) is acquired with data and processing module (4) is connect.
4. the electronic system of the temperature-measuring system of distributed fibers of Larger Dynamic temperature-measuring range according to claim 1, special
Sign is that the data acquisition and processing module (4) are by the first analog-digital converter (41), the second analog-digital converter (42) and FPGA
(43) form, first analog-digital converter (41), the second analog-digital converter (42) respectively with the first programme-controlled gain signal condition
The connection of the gain-programmed amplifier (303) of module (31) and the second programme-controlled gain signal conditioning module (32), first modulus
Converter (41), the second analog-digital converter (42) are all connected with FPGA(43).
5. the electronic system of the temperature-measuring system of distributed fibers of Larger Dynamic temperature-measuring range according to claim 1, special
Sign is, the FPGA(43) it include the first data acquisition controller (431), the second data acquisition controller (432), the first number
According to accumulator (433), the second data accumulator (434), the first Curves compilation device (435), the second Curves compilation device (436), journey
Control gain controller (437) and data output control unit (438), first data acquisition controller (431), the second data
Acquisition controller (432) is separately connected the first data accumulator (433) and the second data accumulator (434), the first data accumulation
Device (433), the second data accumulator (434) are separately connected the first Curves compilation device (435) and the second Curves compilation device (436),
One end of the programmed gain control device (437) connects the first Curves compilation device (435) and the second Curves compilation device (436), journey
The other end for controlling gain controller (437) connects the first programme-controlled gain signal conditioning module (31) and the second programme-controlled gain signal tune
It manages module (32), the first Curves compilation device (435) and the second Curves compilation device (436) are all connected with data output control unit
(438), data output control unit (438) connection industrial computer (5).
6. a kind of electronics comprising the temperature-measuring system of distributed fibers of Larger Dynamic temperature-measuring range described in any claim 1-5
The implementation method of system, which comprises the following steps:
The first step, the optical signalling module (1) generates the laser pulse signal for having certain repetition rate, and receives laser pulse
Stocks the and Anti-Stocks Raman diffused light that signal reflex is returned；
Second step, the Stcoks photoelectric conversion module (21), Anti-Stocks photoelectric conversion module (22) complete photoelectric conversion
And tentatively amplify, output simulation weak voltage signals；
Third step, the first programme-controlled gain signal conditioning module (31), the second programme-controlled gain signal conditioning module (32) are respectively
The weak voltage signals exported from Stcoks photoelectric conversion module (21), Anti-Stocks photoelectric conversion module (22) are received,
And complete signal amplification, output voltage signal；
4th step, the data acquisition and processing module (4) receive and come from the first programme-controlled gain signal conditioning module (31), second
The voltage signal of programme-controlled gain signal conditioning module (32) output, data acquisition, cumulative and transmission；
5th step, the industrial computer (5) analyze Raman data and demodulate temperature signal.
7. the realization of the electronic system of the temperature-measuring system of distributed fibers of Larger Dynamic temperature-measuring range according to claim 6
Method, which is characterized in that the third step and the 4th step, to realize that the timesharing programme-controlled gain of signal, data acquire, data are tired out
Sum it up Curves compilation, implementation step are as follows:
3-1 step, the Stcoks photoelectric conversion module (21), Anti-Stocks photoelectric conversion module (22) output simulation are micro-
Weak voltage signal；
3-2 step, the data acquisition and processing module (4) adjust the first programme-controlled gain signal conditioning module (31) and the second journey
Controlling gain signal conditioning module (32) is low gain mode；
3-3 step, the data acquisition and processing module (4) acquire the first programme-controlled gain signal conditioning module (31) and the second journey
The voltage signal of gain signal conditioning module (32) output is controlled, and completes data accumulation；And export the Stocks curve after adding up
With Anti-Stocks curve；
3-4 step, the data acquisition and processing module (4) adjust the first programme-controlled gain signal conditioning module (31) and the second journey
Controlling gain signal conditioning module (32) is high gain mode；
3-5 step, the data acquisition and processing module (4) acquire the first programme-controlled gain signal conditioning module (31) and the second journey
The voltage signal of gain signal conditioning module (32) output is controlled, and completes data accumulation；And export the Stocks curve after adding up
With Anti-Stocks curve；
3-6 step, the data acquisition and processing module (4) complete the curve of (33) step and (35) step data accumulation result
Synthesis；
3-7 step, the data of curve of output composite result to the industrial computer (5).
8. the realization of the electronic system of the temperature-measuring system of distributed fibers of Larger Dynamic temperature-measuring range according to claim 7
Method, which is characterized in that the 3-6 step, the method for Curves compilation are as follows:
The first Curves compilation device that 3-6-1 step, the data acquisition and processing module (4) pass through the inside the FPGA(43)
(435), the Stocks of the first half of the Stocks curve of the accumulation result of interception 3-3 step, interception 3-5 step accumulation result
Curve it is latter half of, be spliced a complete Stocks curve；
The second Curves compilation device that 3-6-2 step, the data acquisition and processing module (4) pass through the inside the FPGA(43)
(436), the first half of the Anti-Stocks curve of the accumulation result of interception 3-3 step, interception 3-5 walk accumulation result
Anti-Stocks curve it is latter half of, be spliced a complete Anti-Stocks curve.
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