CN107462553A - A kind of calibrating installation of the smog transmission measurement system based on Polarizer - Google Patents
A kind of calibrating installation of the smog transmission measurement system based on Polarizer Download PDFInfo
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- CN107462553A CN107462553A CN201710767910.6A CN201710767910A CN107462553A CN 107462553 A CN107462553 A CN 107462553A CN 201710767910 A CN201710767910 A CN 201710767910A CN 107462553 A CN107462553 A CN 107462553A
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- China
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- polarizer
- sleeve
- calibrating installation
- transmission rate
- light transmission
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/59—Transmissivity
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- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Or Analysing Materials By Optical Means (AREA)
Abstract
The invention discloses a kind of calibrating installation of the smog transmission measurement system based on Polarizer.The calibrating installation is mainly made up of sleeve, two panels Polarizer, pilot pin and light transmission rate distribution table.A piece of Polarizer is fixed in sleeve, and another can be by pilot pin quick regulation two panels Polarizer polarization direction angle, and realizes by light transmission rate distribution table the quick search of calibrating installation light transmission rate under each graduation mark.The calibrating installation can be threadedly secured in by sleeve both ends among smog transmission measurement system, when being calibrated to smog transmission measurement system, realize being switched fast for calibrating installation transmitance.The device possesses the advantages that simple in construction, easy to operate, light transmission rate characteristic switch speed is fast, available in gunpowder research field smog transmission measurement system it is quickly calibrated.
Description
Technical field
The present invention relates to a kind of based on Polarizer, test system, propellant plumage are measured suitable for propellant/propellant powder smoke
Flow smog transmission measurement system, propellant plume smog screening capacity test system, propellant powder muzzle smoke test system etc.
The calibration of smog transmission measurement system.
Background technology
Smog transmission measurement system, it is the test commonly used in propellant and gun propellant charge plume smog performance evaluation
Device.Its general principle is lambert's baer's law, and device passes through the light intensity and initial beam intensity behind smoke region by determining light source
Ratio, the light transmission rate as smog.In implementation.At present in conventional smog transmission measurement device, including promote
Agent smoke amount-closed combustion chamber test system, propellant plume smog transmission measurement system, propellant powder smoke measure examination system
The smog transmission measurement devices such as system, muzzle smoke test system are all to convert optical signals to electric signal, then to electric signal
It is acquired and signal transacting, finally obtains smog light transmission rate；And propellant plume smog screening capacity test system is
Gradation of image information is converted optical signals to, then image is acquired, and carries out image procossing, the final light for obtaining smog
Transmitance rate.No matter which kind of above-mentioned smog transmission measurement system, its calibrating installation is all a number of known transmitance
Optical attenuator.In system calibrating, by the optical attenuator in calibrating installation be placed sequentially in test system light source (or pass
Sensor) near, light transmission rate that light transmission rate and test system according to known to attenuator measure carries out school to test system
It is accurate.
The calibrating installation of smog transmission measurement system has the characteristics of stable performance, easy to operate at present, but it is calibrated
Only there is a specific light transmission rate per a piece of attenuator in device, declined in a calibration process, it is necessary to constantly change manually
Subtract piece, cause the calibration process operating time time-consuming longer, operating efficiency is relatively low.This point is tested in propellant smog screening capacity
(its use environment is outfield, needs for attenuator to be threadedly secured to the mirror of imaging sensor during demarcation in the calibration of system
On head), it appears it is especially prominent.On the other hand, generally, user is wished in the attenuator sequence of calibrating installation, is respectively declined
Subtracting interval between the transmitance of piece can be relatively uniform, and in real process, the light transmission rate of each attenuator by its surface light
The processing quality for learning plated film determines that this can be in the making of calibrating installation and using above making troubles.
The content of the invention
In order to overcome the shortcomings of the prior art, the present invention proposes a kind of smog transmission measurement based on Polarizer
The calibrating installation of system.
A kind of calibrating installation of the smog transmission measurement system based on Polarizer, including：Sleeve, benchmark Polarizer, rotation
Turn Polarizer, back-up ring, pilot pin and light transmission rate phasing meter；
Benchmark Polarizer and rotating polarization plate are separately installed with inside the sleeve both ends, and is fixed each via back-up ring；
Sleeve outer surface is having regulation angle groove close to rotating polarization plate side, and the width of the regulation angle groove is slightly less than Polarizer
Width, regulation angle groove carry equi-distance scale line and its corresponding sequence number, and graduation mark quantity is more than or equal to 3, the scale of serial number 0
Line on the basis of line；
The benchmark Polarizer has metal edge frame, has mark line, mark line and Polarizer emergent light on metal edge frame
Polarization direction it is vertical；When mounted, its mark line overlaps benchmark Polarizer with sleeve outer surface datum line；
The rotating polarization plate has metal edge frame, has mark line, mark line and Polarizer emergent light on metal edge frame
Polarization direction it is vertical, have hickey on mark line；
The pilot pin is installed in regulation angle groove, and the hickey of rotating polarization plate is screwed in through sleeve；Pilot pin
Top is printed on mark line, and mark line overlaps with the mark line of rotating polarization plate, is cased with bolt with stop on the outside of pilot pin, can be used to pair
Pilot pin is fixed, and the external diameter of bolt with stop is more than regulation angle well width.
The light transmission rate distribution table content has sequence number, absolute light transmission rate and nominal light transmission rate；Sequence number is corresponding
Absolute light transmission rate be when the mark line of pilot pin overlaps with the graduation mark of the sequence number on sleeve, the light of calibrating installation passes through
Rate；The nominal light transmission rate of the sequence number is the sequence number and the ratio of the absolute light transmission rate of sequence number 0.
The sleeve material is aluminium material, and there is screw thread at the both ends of sleeve, facilitates the fixation of calibrating installation in a test system.
The length that angle groove is adjusted on sleeve is slightly larger than 1/4 sleeve perimeter, and the convenient pilot pin that adjusts is adjusted in the range of 90 °.
Brief description of the drawings
The front view of Fig. 1 apparatus of the present invention structures, 1- sleeves, 2- benchmark Polarizers, 3- rotating polarization plates, 4- regulation angles
Groove, 5- back-up rings.
The left view of Fig. 2 apparatus of the present invention structures, 6- pilot pins, 7 bolt with stop.
Embodiment
Explanation is further explained to the present invention below by embodiment.
Calibrating installation is installed according to Fig. 1, Fig. 2：Rotating polarization plate 3 is arranged on into sleeve 1 first regulation angle
Inside the side of groove, the position of regulation rotating polarization plate 3, pilot pin 6 is fixed and is arranged on rotating polarization plate through regulation angle groove 4
On 3 hickey, then back-up ring 5 is arranged on the outside of rotating polarization plate, is close to rotating polarization plate 3.Then it is again that benchmark is inclined
Tabula rasa 2 is arranged on inside the opposite side of sleeve 1, rotation reference Polarizer 2, its mark line is overlapped with the appearance line of face,mounting of sleeve 1,
Finally back-up ring 5 is arranged on the outside of benchmark tabula rasa, is close to benchmark Polarizer 2.
The fixed position of calibrating installation：Calibrating installation is fixed on light source or optical sensor in smog transmission measurement system
Side.
The adjusting method of calibrating installation：Rotating cylinder can be adjusted within the specific limits in calibrating installation.Test system is not being carried out
During system calibration, the graduation mark of pilot pin 6 of calibrating installation is located on the datum line of sleeve 1, when test system is calibrated, adjustment
The position of pilot pin 6, the graduation mark of pilot pin 6 is set to be sequentially located on the graduation mark on dial.Below by " pilot pin graduation mark is successively
On graduation mark N on dial " scale is referred to as modulated into N shelves.
Application of the calibrating installation of embodiment 1 in propellant powder smoke amount-closed combustion chamber test system
The sleeve diameter of calibrating installation is 25, and wherein Polarizer uses film Polarizer, and material is optical glass, optical film
For can be by pipe multi anti reflection coating, wave-length coverage be (400~700) nm.The main body high scale line of sleeve 1 (containing datum line) has 6,
Sequence number is followed successively by 0,1,2,3,4,5.Adjacent graduation mark is spaced identical, No. 0 graduation mark (datum line) and bushing core axis
The plane of formation, the angle that plane is formed with No. 5 graduation marks and sleeve central axis line is 90 °.The light transmission rate of calibrating installation
Distribution table (is noted as shown in table 1：Spectrophotometer can be used with reference to GB/T15489.1-1995 in absolute transmitance data《Optical filtering glass
Glass method of testing spectral characteristic》Measure).
The visible light transmissivity characteristic distribution table of the calibrating installation of table 1
| Sequence number | Nominal light transmission rate (%) | Absolute light transmission rate (%) |
| 0 | 100 | 19.2 |
| 1 | 80.2 | 15.40 |
| 2 | 59.9 | 11.49 |
| 3 | 40.2 | 7.72 |
| 4 | 19.8 | 3.80 |
| 5 | 0 | 0 |
Calibrating installation is threadedly secured between light source and the observation window window of combustion chamber.In test system normal use
During, calibrating installation is located at the 0th grade.When test system is in calibration process, the gear of calibrating installation is improved successively, record
The measured value of smog transmission measurement system.After demarcation terminates, the gear of calibration system is adjusted to the 0th grade.And according to calibration cartridge
The actual measurement transmitance of the nominal light transmission rate of each gear and calibration process in the light transmission rate distribution table put, draw test system
Calibration curve, the calibration equation of calculation test system.
Application of the calibrating installation of embodiment 2 in propellant plume smog screening capacity test system
The sleeve diameter of calibrating installation is 30, slightly larger than the diameter of system source.Wherein Polarizer uses film Polarizer,
Material is optical glass, and optical film is can be by pipe multi anti reflection coating, and wave-length coverage is (720~2000) nm.In sleeve body
Graduation mark (containing datum line) has 6, and sequence number is followed successively by 0,1,2,3,4,5.Adjacent graduation mark is spaced identical, No. 0 graduation mark
The plane that (datum line) and sleeve central axis line are formed, the angle for forming plane with sleeve central axis line with No. 5 graduation marks are
90°.Near infrared light (1 μm~3 μm) light transmission rate distribution table of calibrating installation (is noted as shown in table 1：Absolute transmitance data can
Using spectrophotometer with reference to GB/T 15489.1-1995《Filter glass method of testing spectral characteristic》Measure).
The near-infrared light transmission rate distribution table of the calibrating installation of table 2
| Sequence number | Nominal light transmission rate (%) | Absolute light transmission rate (%) |
| 0 | 100 | 29.7 |
| 1 | 79.6 | 23.6 |
| 2 | 61.3 | 18.2 |
| 3 | 42.1 | 12.5 |
| 4 | 20.9 | 6.2 |
| 5 | 0 | 0 |
Calibrating installation one end is connected with the interface of imaging sensor, and the other end is connected by adapter with optical lens.
During test system normal use, calibrating installation is located at the 0th grade., successively will calibration when test system is in calibration process
The gear of device improves, and records the measuring image of smog transmission measurement system.After demarcation terminates, the gear of calibration system is adjusted
To the 0th grade.And surveyed according to the nominal light transmission rate and calibration process of each gear in the light transmission rate distribution table of calibrating installation
Image carries out the actual measurement light transmission rate of data processing acquisition, draws the calibration of the calibration curve, calculation test system of test system
Formula.
The present invention is not limited to above-mentioned embodiment, using identical with the above embodiment of the present invention or approximate structure, and
Obtained other structures design, within protection scope of the present invention.
Claims (4)
- A kind of 1. calibrating installation of the smog transmission measurement system based on Polarizer, it is characterised in that including：Sleeve (1), base Quasi- Polarizer (2), rotating polarization plate (3), back-up ring (5), pilot pin (6) and light transmission rate phasing meter (8)；Benchmark Polarizer (2) and rotating polarization plate (3) are separately installed with inside sleeve (1) both ends, and each via back-up ring (5) it is fixed；Sleeve outer surface is having regulation angle groove (4) close to rotating polarization plate (3) side, the regulation angle groove (4) Width is slightly less than the width of Polarizer, and regulation angle groove (4) carries equi-distance scale line and its corresponding sequence number, and graduation mark quantity is big In equal to 3, line on the basis of the graduation mark of serial number 0；The benchmark Polarizer (2) has metal edge frame, has mark line on metal edge frame, and mark line is emitted with Polarizer (2) The polarization direction of light is vertical；When mounted, its mark line overlaps benchmark Polarizer (2) with sleeve (1) appearance line of face,mounting；The rotating polarization plate (3) has metal edge frame, has mark line on metal edge frame, and mark line is emitted with Polarizer (3) The polarization direction of light is vertical, there is hickey on mark line；The pilot pin (6) is installed in regulation angle groove (4), and the screw thread that rotating polarization plate (3) is screwed in through sleeve (1) connects Mouthful；Pilot pin top is printed on mark line, and mark line overlaps with the mark line of rotating polarization plate (3)；Light transmission rate distribution table (8) content has sequence number, absolute light transmission rate and nominal light transmission rate；Corresponding to sequence number Absolute light transmission rate is the light of calibrating installation when the mark line of pilot pin (6) overlaps with the graduation mark of the sequence number on sleeve (1) Transmitance；The nominal light transmission rate of the sequence number is the sequence number and the ratio of the absolute light transmission rate of sequence number 0.
- 2. calibrating installation according to claim 1, it is characterised in that sleeve (1) material is aluminium material, the two of sleeve There is screw thread at end.
- 3. calibrating installation according to claim 1, it is characterised in that the length that angle groove (4) is adjusted on sleeve (1) is bigger In 1/4 sleeve perimeter.
- 4. calibrating installation according to claim 1, it is characterised in that be cased with bolt with stop (7) on the outside of pilot pin (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710767910.6A CN107462553A (en) | 2017-08-31 | 2017-08-31 | A kind of calibrating installation of the smog transmission measurement system based on Polarizer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710767910.6A CN107462553A (en) | 2017-08-31 | 2017-08-31 | A kind of calibrating installation of the smog transmission measurement system based on Polarizer |
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| CN107462553A true CN107462553A (en) | 2017-12-12 |
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| CN201710767910.6A Pending CN107462553A (en) | 2017-08-31 | 2017-08-31 | A kind of calibrating installation of the smog transmission measurement system based on Polarizer |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108801943A (en) * | 2018-04-19 | 2018-11-13 | 西安近代化学研究所 | A kind of self-checking device of smog transmission measurement system |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102183470A (en) * | 2011-03-25 | 2011-09-14 | 成都新三可仪器有限公司 | Checking device and checking method for colorimetric method instrument |
| CN104849241A (en) * | 2015-05-14 | 2015-08-19 | 西安近代化学研究所 | Calibration method of system for testing light shielding capability of smoke of propellants |
| CN105190382A (en) * | 2013-05-08 | 2015-12-23 | 富士胶片株式会社 | Circularly polarized light separation film, method for producing circularly polarized light separation film, infrared sensor, and sensing system and sensing method utilizing light |
| CN206258400U (en) * | 2016-11-29 | 2017-06-16 | 昆山之奇美材料科技有限公司 | A kind of highly sensitive Polarizer automatic defect detecting device |
-
2017
- 2017-08-31 CN CN201710767910.6A patent/CN107462553A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102183470A (en) * | 2011-03-25 | 2011-09-14 | 成都新三可仪器有限公司 | Checking device and checking method for colorimetric method instrument |
| CN105190382A (en) * | 2013-05-08 | 2015-12-23 | 富士胶片株式会社 | Circularly polarized light separation film, method for producing circularly polarized light separation film, infrared sensor, and sensing system and sensing method utilizing light |
| CN104849241A (en) * | 2015-05-14 | 2015-08-19 | 西安近代化学研究所 | Calibration method of system for testing light shielding capability of smoke of propellants |
| CN206258400U (en) * | 2016-11-29 | 2017-06-16 | 昆山之奇美材料科技有限公司 | A kind of highly sensitive Polarizer automatic defect detecting device |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108801943A (en) * | 2018-04-19 | 2018-11-13 | 西安近代化学研究所 | A kind of self-checking device of smog transmission measurement system |
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Application publication date: 20171212 |
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