CN206670829U - A kind of optical fibre light splitting temp measuring system - Google Patents
A kind of optical fibre light splitting temp measuring system Download PDFInfo
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- CN206670829U CN206670829U CN201720281171.5U CN201720281171U CN206670829U CN 206670829 U CN206670829 U CN 206670829U CN 201720281171 U CN201720281171 U CN 201720281171U CN 206670829 U CN206670829 U CN 206670829U
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Abstract
The utility model discloses a kind of optical fibre light splitting temp measuring system, including the collection of optical imaging device, 8 road bundling optical fiber spectral modules, the optical filter module of 8 pieces of covering visible lights near infrared band, 8 road detecting modules being made up of 4 road visible rays and 4 road infrared detectors, 8 tunnel synchronization control modules, 8 circuit-switched datas and processing module and computer testing device.Compared with prior art, not only accurately the emissivity of test explosive with the change of wavelength and time, also improves the quality of the signal of whole test system, the features such as embodying the high degree of accuracy, real-time and portability.
Description
Technical field
It the utility model is related to blast temperature technical field of measurement and test, and in particular to a kind of optical fibre light splitting temp measuring system.
Background technology
In the testing field of blast temperature, mainly there is total radiation ther, radiance thermometry, double color temperature measuring method, red at present
Outer thermal imaging system thermometry, ultraphotic spectrum thermometry and Multi spectral thermometry method, total radiation ther are by measuring wavelength from zero to nothing
Radiant power in poor big whole spectral region determines the temperature of object, as long as can measure all-wave length global radiation work(in theory
Rate can determines the true temperature of object, but there is no the detector for having response to all band at present, also complete without that can pass through
The optical material of wave band, therefore, total radiation ther can not realize the accurate test of temperature；Radiance thermometry is also referred to as monochromatic temperature
Degree measurement warm therapy, it is the method occurred earliest in blast field, and a kind of method, this method pass through structure
Optical filter enables the energy of only some specified wavelength to enter photodetector, so the temperature measured is actually object
Bright temperature, rather than actual blast temperature, if expecting the very warm of testee, need to estimate the emissivity of testee, and
The object emission rate obtained by method of estimation has very big error；Double color temperature measuring method is to design two spectrum in pyrometer to lead to
Road, by the spectral information of two passages being calculated the temperature of object, two color thermometer assumes that testee is grey body, i.e.,
Emissivity is not influenceed by operation wavelength and time, only it is relevant with temperature, and the emissivity of explosive be with wavelength and when anaplasia
The amount of change, therefore, the temperature of this method measurement is still bright temperature, rather than true temperature；Using infrared heat image instrument measuring blast temperature,
There is thermal infrared imager the advantages of face imaging, data message amount is big to be applied in blast temperature measurement, especially to studying explosive
Blast fire group temperature proliferation has an incomparable advantage of other pyrometers, but what the method measured is still the bright of object
Temperature, do not solve unknown emissivity under conditions of measure object it is very warm the problem of, and be adapted to blast temperature be less than less than 1000 DEG C spokes
Penetrate the test of temperature；Ultraphotic spectrum thermometry typically uses spectral radiometer, and spectral radiometer front-end configuration Transmission Fibers are also referred to as light
Optical fiber spectrograph, its test philosophy be all by the accurate test to explosive radiant power and the simulation algorithm of spectral emissivity come
The measurement of blast temperature is completed, photodetector typically uses single-element detector or detector array in ultraphotic composes thermometry,
The test of whole wave-length coverage is completed using single-element detector, it is necessary to carry out spectral scan, scanning a cycle is about in millisecond
Magnitude, using detector array also about in millisecond magnitude, therefore, it is impossible to test ammunition of the detonation velocity in musec order, fit
For the test of blast temperature at a slow speed, changed with time situation in addition, the method for testing can not provide blast temperature；It is multispectral
Thermometry is that optical system for testing is divided into 4 tunnels, 6 tunnels using optical light splitting technology, 4 wavelength pyrometers, 6 wavelength radiations successively occurs
Pyrometer etc., the thermometric upper limit are up to 8000K, tentatively obtain the accurate measurement of blast temperature, this method is due to using optics point
Optical element, 4 tunnels need three pieces of beam splitters, 6 tunnels to need five pieces of beam splitters, 8 tunnels to need seven pieces of beam splitters, and TCH test channel is more, ripple
Length is finer, and measurement accuracy is higher, it is therefore desirable to beam splitter more multi-energy decay it is also bigger, while cause beam splitting system body
Product is huge, outfield carry and in-convenience in use, the reliability of the test also made in addition reduces.In summary, blast how is realized
The accurate test of temperature and its versus time curve are always the problem in Exploding test field.
Utility model content
To solve drawbacks described above, the purpose of this utility model is to provide a kind of optical fibre light splitting temp measuring system, can accurate measurement
The blast temperature changed over time, it is suitable for the accurate measurement of high temperature, the blast of superhigh temperature target or flame true temperature.
To reach above-mentioned purpose, the technical solution adopted in the utility model is：A kind of optical fibre light splitting temp measuring system, including set
Optical imaging device, bundling optical fiber spectral module in explosive source side, optical filter module, detecting module, high-speed data acquisition
Processing module and computer testing device；
The optical imaging device includes a lens group, and explosive source is imaged to the bundling optical fiber and is divided by the lens group
Module input；
The bundling optical fiber spectral module output end exports 8 road signals and is transferred to optical filter module；
The optical filter module includes 4 road visible filters and 4 road near infrared filters, receives the concentrated light respectively
8 road signals of fine spectral module output；
The detecting module includes the visible-light detector that matches respectively with 4 road visible filters and closely red with 4 tunnels
The near infrared detector that outer optical filter matches；
4 road visible rays and 4 tunnels of the high-speed data collecting and processing module acquisition process from the detecting module are closely red
External signal data；
The computer testing device includes hardware controls and operational software, and the hardware controls include 8 tunnel Synchronization Controls
Module, the acquisition time of high-speed data acquisition and processing module, preposition multiplication factor and channel parameters are set, the Synchronization Control
Module senses the blast source signal, triggers acquisition process of the high-speed data collecting and processing module to data, the computing
Software measures the spectral radiant power that multiple wavelength inscribe in some time by computer testing device, so as to obtain blast temperature.
The visible-light detector is the silicon photodetector of high stability.
The near infrared detector is highly sensitive InGaAs detectors.
The high-speed data collecting and processing module include silicon detector group pre-amplification circuit and I/V change-over circuits,
InGaAs detector group pre-amplification circuits and I/V change-over circuits, multi-channel high-speed data acquisition process memory module.
The synchronization control module Zhong Ge roads are parallel triggering, and any road senses that signal can trigger the high speed
Digital sampling and processing carries out Quick Acquisition.
The utility model is theoretical according to spectral radiance, passes through the accurate measurement to radiant power of exploding and spectral emissivity
Algorithm research, complete blast temperature and its precision measurement with the time.
The beneficial effects of the utility model are：Optical fibre light splitting principle is combined on the basis of Multi spectral thermometry method, devises 8
Road fibre light splitting technology test blast temperature system, with reference to simulation algorithm, realizes the quickly and accurately measurement of blast true temperature
Calculate.Compared with prior art, not only accurately the emissivity of test explosive with the change of wavelength and time, also improves whole
The quality of the signal of test system, the features such as embodying the high degree of accuracy, real-time and portability.
Brief description of the drawings
Below according to drawings and Examples, structure and features of the present utility model is further described.
Fig. 1 is structural representation of the present utility model.
Embodiment
Below in conjunction with the accompanying drawings and embodiment, structure of the present utility model is further described.
The utility model preferred embodiment is used for high explosive ammunition instantaneous radiation temperature and thermal field distribution tests and collimation technique,
Its blast temperature scope is 1000 DEG C~4000 DEG C, and its blast temperature is accurately tested in realization.
Referring to accompanying drawing 1, the optical fibre light splitting temp measuring system is by optical imaging device 2,3,8 pieces of 8 road bundling optical fiber spectral module
8 tunnels that covering visible light forms to the optical filter module of near infrared band, 4 road visible-light detectors and No. 4 near infrared detectors
Detecting module, 8 tunnel synchronization control modules 5,8 road high-speed data collecting and processing modules 4 and computer testing device 6 form, according to
It is theoretical according to spectral radiance, by the accurate measurement of radiant power and the algorithm research of spectral emissivity of exploding, completing blast temperature
Degree and its precision measurement with the time.
Explosive source 1 is imaged onto 8 road bundling optical fiber spectral modules 3 by optical imaging device 2, and optical imaging device 2 is by one group
Lens form；
8 road bundling optical fiber spectral modules are designed as 1 point 8, i.e. input is 1 tunnel, and bundling optical fiber input area is 8 squares
Millimeter, output end are decomposed into 8 tunnels, are 1 square millimeter per road output facula size, and bundling optical fiber, which is divided equally, to be designed, and light enters boundling
I.e. being decomposed into 8 road optical signals arrives separately at optical filter module for output after optical fibre light splitting module；
8 pieces of optical filter modules are made up of 4 road visible filters, 4 road near infrared filters and its mounting bracket respectively, its
Peak wavelength is respectively：Visible ray 450nm, 650nm, near-infrared 850nm, 1000nm, 1200nm, 1600nm, 1850nm,
2000nm, bandwidth are less than 30nm；
8 road detecting modules are visited by 4 tunnel high stability silicon photodetectors and 4 tunnel high sensitivity near infrared detector InGaAs
Survey device composition, wherein silicon photodetector wave-length coverage is 350nm~1110nm, complete to 4 wavelength points 450nm, 650nm,
The collection of 850nm, 1000nm signal, InGaAs detectors wave-length coverage are 850nm~2200nm, are completed to 4 ripples of near-infrared
The collection of long point 1200nm, 1600nm, 1850nm, 2000nm signal, designs more than, realizes more from visible ray to near-infrared
The detection of wave band explosive radiation signal；
8 road high-speed data collecting and processing modules are for, near infrared signal collection and data processing, being to 8 road visible rays
Silicon photodetector and InGaAs detectors group and design, including silicon detector group pre-amplification circuit and I/V change-over circuits,
InGaAs detector group pre-amplification circuits and I/V change-over circuits and multi-channel high-speed data acquisition process memory module.
8 tunnel synchronization control modules are used to the synchronous of blast source signal is triggered and gathered, with 8 road high-speed data collecting and processings
Module is combined, and completes triggering and control to whole test system, and 8 tunnel Synchronization Controls are designed as parallel triggering, i.e., and any 1
Road senses that signal can trigger 8 tunnels and carry out Quick Acquisition.
Computer testing device includes hardware controls and operational software two parts, and wherein hardware controls include the synchronously control of 8 tunnels
The hardware systems such as molding block, the acquisition time of high-speed data acquisition and processing module, preposition multiplication factor, channel parameters setting
Set and debugging, operational software calculating include system calibrating, emissivity test, blast temperature test, blast temperature Annual distribution
The functions such as test.The explosive emissivity and blast temperature inscribed when calculating each in whole blast process respectively, you can obtain
Explosive with Annual distribution emissivity and blast temperature.
Described above is only preferred embodiment of the present utility model, and above-mentioned specific embodiment is not to the utility model
Limitation, retouching, modification or the equivalent substitution that all one of ordinary skill in the art are made as described above, belong to this reality
With new protection domain.
Claims (5)
- A kind of 1. optical fibre light splitting temp measuring system, it is characterised in that：Including the optical imaging device located at explosive source side, concentrated light Fine spectral module, optical filter module, detecting module, high-speed data collecting and processing module and computer testing device；The optical imaging device includes a lens group, and explosive source is imaged to the bundling optical fiber spectral module by the lens group Input；The bundling optical fiber spectral module output end exports 8 road signals and is transferred to optical filter module；The optical filter module includes 4 road visible filters and 4 road near infrared filters, receives the bundling optical fiber point respectively 8 road signals of optical module output；The detecting module includes the visible-light detector to match respectively with 4 road visible filters and filtered with 4 road near-infrareds The near infrared detector that mating plate matches；4 road visible rays and 4 road near-infrared letters of the high-speed data collecting and processing module acquisition process from the detecting module Number；The computer testing device includes hardware controls and operational software, the hardware controls include 8 tunnel synchronization control modules, The acquisition time of high-speed data acquisition and processing module, preposition multiplication factor and channel parameters are set, the synchronization control module Sense the blast source signal, trigger acquisition process of the high-speed data collecting and processing module to data, the operational software The spectral radiant power that multiple wavelength inscribe in some time is measured by computer testing device, so as to obtain blast temperature.
- 2. optical fibre light splitting temp measuring system according to claim 1, it is characterised in that：The visible-light detector is high stable Property silicon photodetector.
- 3. optical fibre light splitting temp measuring system according to claim 1, it is characterised in that：The near infrared detector is highly sensitive Spend InGaAs detectors.
- 4. optical fibre light splitting temp measuring system according to claim 1, it is characterised in that：The high-speed data collecting and processing module Including silicon detector group pre-amplification circuit and I/V change-over circuits, InGaAs detector group pre-amplification circuits and I/V conversion electricity Road, multi-channel high-speed data acquisition process memory module.
- 5. optical fibre light splitting temp measuring system according to claim 1, it is characterised in that：The synchronization control module Zhong Ge roads For parallel triggering, any road senses that signal can trigger the high-speed data collecting and processing module and carry out Quick Acquisition.
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| CN201720281171.5U CN206670829U (en) | 2017-03-22 | 2017-03-22 | A kind of optical fibre light splitting temp measuring system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106979832A (en) * | 2017-03-22 | 2017-07-25 | 河南北方红阳机电有限公司 | A kind of optical fibre light splitting temp measuring system and its temp measuring method |
| CN113401360A (en) * | 2021-06-16 | 2021-09-17 | 电子科技大学 | Aero-engine turbine disc temperature measuring device based on multiband optical radiation temperature measurement |
-
2017
- 2017-03-22 CN CN201720281171.5U patent/CN206670829U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106979832A (en) * | 2017-03-22 | 2017-07-25 | 河南北方红阳机电有限公司 | A kind of optical fibre light splitting temp measuring system and its temp measuring method |
| CN106979832B (en) * | 2017-03-22 | 2023-08-15 | 河南北方红阳机电有限公司 | Optical fiber spectroscopic temperature measurement system and temperature measurement method thereof |
| CN113401360A (en) * | 2021-06-16 | 2021-09-17 | 电子科技大学 | Aero-engine turbine disc temperature measuring device based on multiband optical radiation temperature measurement |
| CN113401360B (en) * | 2021-06-16 | 2023-03-10 | 电子科技大学 | Aero-engine turbine disk temperature measuring device based on multiband optical radiation temperature measurement |
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