CN109407028A - A kind of ultraviolet standard source of hand-held - Google Patents
A kind of ultraviolet standard source of hand-held Download PDFInfo
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- CN109407028A CN109407028A CN201811447650.5A CN201811447650A CN109407028A CN 109407028 A CN109407028 A CN 109407028A CN 201811447650 A CN201811447650 A CN 201811447650A CN 109407028 A CN109407028 A CN 109407028A
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- ultraviolet
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- ultraviolet led
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- 238000012937 correction Methods 0.000 claims description 7
- 238000006243 chemical reaction Methods 0.000 claims description 3
- 238000009499 grossing Methods 0.000 claims description 2
- 230000003287 optical effect Effects 0.000 claims description 2
- 238000012360 testing method Methods 0.000 abstract description 10
- 238000013139 quantization Methods 0.000 abstract description 7
- 238000007689 inspection Methods 0.000 abstract description 6
- 238000004364 calculation method Methods 0.000 abstract description 2
- 238000000825 ultraviolet detection Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- YZCKVEUIGOORGS-OUBTZVSYSA-N Deuterium Chemical compound [2H] YZCKVEUIGOORGS-OUBTZVSYSA-N 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 229910052805 deuterium Inorganic materials 0.000 description 2
- 230000006870 function Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 description 2
- 229910052753 mercury Inorganic materials 0.000 description 2
- 229910052724 xenon Inorganic materials 0.000 description 2
- FHNFHKCVQCLJFQ-UHFFFAOYSA-N xenon atom Chemical compound [Xe] FHNFHKCVQCLJFQ-UHFFFAOYSA-N 0.000 description 2
- 241000218606 Pinus contorta Species 0.000 description 1
- 206010037660 Pyrexia Diseases 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000001143 conditioned effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 238000010891 electric arc Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000011173 large scale experimental method Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 239000000523 sample Substances 0.000 description 1
- 230000035807 sensation Effects 0.000 description 1
- 235000000673 shore pine Nutrition 0.000 description 1
- 230000003595 spectral effect Effects 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 230000002459 sustained effect Effects 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R35/00—Testing or calibrating of apparatus covered by the other groups of this subclass
- G01R35/005—Calibrating; Standards or reference devices, e.g. voltage or resistance standards, "golden" references
- G01R35/007—Standards or reference devices, e.g. voltage or resistance standards, "golden references"
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J1/00—Photometry, e.g. photographic exposure meter
- G01J1/02—Details
- G01J1/08—Arrangements of light sources specially adapted for photometry standard sources, also using luminescent or radioactive material
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Photometry And Measurement Of Optical Pulse Characteristics (AREA)
Abstract
The invention discloses a kind of ultraviolet standard sources of hand-held, different ultraviolet imagery equipment are detected obtained number of photons to convert to obtain conversion factor, different ultraviolet imagery equipment being detected to, number of photons carries out unified quantization by the coefficient, limit photon counting numerical value no longer by equipment and equipment calculation, compare convenient for the unified quantization of ultraviolet testing result, promotes ultraviolet inspection woprk standardization.On the other hand, the ultraviolet standard source is small in size, light-weight, carries out live inspection and verifying work convenient for a line producers.
Description
Technical field
The present invention relates to electrical detection technique fields, more particularly to a kind of ultraviolet standard source of hand-held.
Background technique
The different forms electric discharge such as corona, point discharge even electric arc, flashover frequent occurrence of high-tension electricity device external.Electric discharge
The signals such as Different lightwave, sound wave and ultraviolet light can be given off in the process.The wave of its generation is received using UV detection devices
The UV signal of long 240-280nm, being handled by analysis and detecting wherein number of photons can reach determining discharge position and intensity work
With.
Country's ultraviolet corona detector reaches its maturity at present, and corresponding UV detection devices demand also gradually increases.On the one hand,
Power industry at home, an enterprise have often purchased the ultraviolet imager of different manufacturers, different manufacturers UV detection devices
There is different photon counting modes, so that these equipment number of photons obtained is different, cannot be compared, be unfavorable for ultraviolet patrol
Examine the implementation of standardization effort.On the other hand, domestic existing ultraviolet standard source majority is based on colleges and universities' optical platform, components
More, adjusting complexity, it is impossible to be used in the live inspection work of UV detection devices and verifying work.
Summary of the invention
The technical problems to be solved by the present invention are: making up the deficiencies in the prior art, a kind of ultraviolet standard of hand-held is proposed
Source, to solve the problems, such as that different ultraviolet imagery equipment detection number of photons are unable to unified quantization and ultraviolet standard source components are multiple
It is miscellaneous to be difficult to the problem of adjusting.
Technical problem of the invention is resolved by technical solution below:
A kind of ultraviolet standard source of hand-held, including battery, constant-current source circuit, duty ratio adjusting circuit and the purple being sequentially connected
Outer LED and attenuator, light power meter, display counting circuit and touch screen；
Constant-current source circuit and duty ratio adjusting circuit carry out linear smoothing adjusting, the light of ultraviolet LED to the light intensity of ultraviolet LED
After strong stability, light power meter detects the light intensity of ultraviolet LED, obtains number of photons theoretical value by conversion；Decaying is installed on ultraviolet LED
Device is placed in front of ultraviolet imager to be measured, and ultraviolet imager to be measured detects to obtain number of photons device value；
Display counting equipment calculates the correction system of ultraviolet imager to be measured according to number of photons theoretical value and number of photons device value
Number, display screen show the correction coefficient and number of photons theoretical value and number of photons device value.
The beneficial effect of the present invention compared with the prior art is:
Different ultraviolet imagery equipment are detected obtained number of photons and converted by the ultraviolet standard source of a kind of hand-held that the present invention develops
Conversion factor is obtained, different ultraviolet imagery equipment being detected to, number of photons carries out unified quantization by the coefficient, make photon
Count value is no longer limited by equipment and equipment calculation, is compared convenient for the unified quantization of ultraviolet testing result, is promoted ultraviolet
Inspection woprk standardization.On the other hand, the ultraviolet standard source is small in size, light-weight, carries out scene convenient for a line producers and patrols
Inspection and verifying work.
Detailed description of the invention
Fig. 1 is a kind of schematic diagram of the ultraviolet standard source of hand-held of the present invention.
Specific embodiment
The embodiment of the present invention is illustrated with reference to the accompanying drawing.
The ultraviolet standard source of hand-held of the invention is made of light source module, integrated circuit, power meter and supplementary module.Light source
Module contains ultraviolet LED and attenuator.Integrated circuit includes constant-current source circuit, control circuit, display/counting circuit.Assist mould
Block includes battery and touch screen.Power is calculated as a kind of accessory of ultraviolet standard source of hand-held, the self checking for the light source.Self-correcting
The purpose tested be in order to eliminate the influence due to production batch, service life and live temperature and humidity to ultraviolet LED output light subnumber,
Guarantee the accuracy of the ultraviolet standard source verifying function.
Ultraviolet LED is small in size, light-weight, and service life is in 1000h or more, and light source fluctuation rate is below 0.1%.Attenuator
With fixed detraction rate, it is connected with light source, it can be with manual teardown.Constant-current source circuit is connected with battery, for generating constant current
Drive ultraviolet LED.Control circuit is connected with constant-current source circuit, adjusts light intensity by exporting the current signal of different duty,
Realize linear, the smooth adjustment to light intensity.Display/counting circuit is connected with touch screen, have parameter input, output, calculate and
Store function.
The working method in this standard source: light source part issues signal, and equipment under test is entered after attenuator is decayed, and is tested
Equipment tests mark source standard, then corrects number of photons, specific as follows:
(1) ultraviolet standard source is opened, light intensity is adjusted, after stabilized intensity (general 2-5min), is popped one's head in and is examined with light power meter
Current light intensity, input equipment are surveyed, equipment is scaled theoretical number of photons NIt is theoretical, correction is completed when which dispatches from the factory；
(2) remove light power meter probe, attenuator is installed on light source front end, be an entirety, by this be integrally placed to
Sustained height, fixed range (such as 10m) in front of measurement equipment are opened equipment under test and are tested；
(3) after equipment under test to be measured is stablized, equipment detects the number of photons N to the standard sourceEquipment, input system；
(4) the theoretical number of photons N that system is calculated according to standard sourceIt is theoreticalNumber of photons N is surveyed with equipment under testEquipment, it is calculated,
Obtain the correction coefficient K of the equipment under test；
(5) correction coefficient K is multiplied with the photon that equipment under test detects in practice, and you can get it corrects number of photons NJust。
Using single day blind ultraviolet LED, energy conservation, stablize, low-power consumption；Keep light intensity adjustable by constant current control method；Volume
It is small, light-weight, testing crew can one hand operated；Have touch screen, it is easy to operate, it can input, output data, Neng Gouzhi
Connect output factor.
There are mercury lamp, deuterium lamp, xenon lamp and tetra- kinds of deep ultraviolet LED in typical solar blind UV source.Mercury lamp, deuterium lamp and xenon lamp radiation
Intensity is high, volume is larger, fever is serious, is commonly used in large-scale experiment.Ultraviolet LED lamp mainly radiates the ultraviolet light of certain wavelength,
The efficiency of light energy utilization is high, and small power consumption, the service life is long, at low cost, and is cold light source, small in volume.Ultraviolet LED lamp both can satisfy
The requirement of spectral region, the angle of divergence and output power, meanwhile, it is easy to reduce the weight and size of standard source.Comprehensively consider various
The advantage and disadvantage of light source, final choice ultraviolet LED light source.
Ultraviolet LED select South Korea Seoul SVC production single LED light source, wavelength be 275 ± 5nm, 120 ° of light emitting angle,
Specification 3.5mm*3.5mm, driving current 20mA.
Attenuator is made of attenuator and lens cap.Attenuator diameter 25mm (1 inch), thickness 1-3mm are fixed on camera lens
Gai Zhong.Lens cap can be connected with ultraviolet LED, can be with manual teardown.
Constant-current source circuit is DC-DC conversion module, and battery current is converted into stable 20mA electric current.Using using double ratios
The duty ratio conditioned circuit constituted compared with device.Consider ultraviolet LED property and ultraviolet imagery equipment frame frequency (generally 25Hz) to be measured, it should
Duty ratio adjusting circuit frequency is higher than 50Hz.Setting 1%, 5%, 10%, 25%, 50%, 75%, 100%, 7 gears are adjustable.
Display/counting circuit is connected with touch screen, can input parameter, calculating parameter, display current state etc..
Power meter is customized by Japanese HAMAMATSU (shore pine) company, and response wave length 280nm ± 10nm, measurement range is greater than
LED maximum power.
Battery is by the customization of Guangdong peace electric energy Science and Technology Ltd., capacity 5200mAh, rated power 57.7Wh, weight
550g or so.In view of first-line staff needs wearing gloves to operate, select touch screens as touch screen.
In appearance design aspect, it is in cuboid, edge is adopted which, which is 160mm*100mm*65mm,
It is handled with circular arc chamfering.Instrument surface is stainless steel frosted face, is integrally silvery white in color, there is granular sensation on surface, and non-skid property is preferable.
There is protection cap above touch screen, protect touch screen, and be printed with manufacturer logo, when normal use is removed in the form of pull
Protection cap.15 ° of touch screen updip, convenient for checking and operating.Ultraviolet LED light source is located at instrument front end, and surrounding is metal threaded
Design is installed convenient for attenuator.Battery case and switch are placed in instrument rear, and battery case is fixed by 4 M3 screws.
A kind of ultraviolet standard source of hand-held of the present invention is evaluated ultraviolet imager performance for owner enterprise unified quantization and is provided
Technical foundation.In addition, owner enterprise can build verification platform based on a kind of ultraviolet standard source of hand-held, purchased for periodic check
The ultraviolet imager set.For a line producers, a kind of ultraviolet standard source of hand-held has powerful portability and practicability,
The blank of ultraviolet imager field-checking is filled up.For ultraviolet corona detector, which facilitates ultraviolet detection knot
The unified quantization of fruit compares, and promotes ultraviolet inspection woprk standardization.
Embodiments of the present invention above described embodiment only expresses, the description thereof is more specific and detailed, but can not
Therefore it is construed as limiting the scope of the patent.It should be pointed out that for those of ordinary skill in the art,
Under the premise of not departing from present inventive concept, various modifications and improvements can be made, and these are all within the scope of protection of the present invention.
Therefore, the scope of protection of the patent of the invention shall be subject to the appended claims.
Claims (2)
1. a kind of ultraviolet standard source of hand-held, which is characterized in that
Including the battery, constant-current source circuit, duty ratio adjusting circuit and the ultraviolet LED that are sequentially connected and attenuator, optical power
Meter, display counting circuit and touch screen；
Constant-current source circuit and duty ratio adjusting circuit carry out linear smoothing adjusting to the light intensity of ultraviolet LED, and the light intensity of ultraviolet LED is steady
After fixed, light power meter detects the light intensity of ultraviolet LED, obtains number of photons theoretical value by conversion；Attenuator is installed simultaneously on ultraviolet LED
It is placed in front of ultraviolet imager to be measured, ultraviolet imager to be measured detects to obtain number of photons device value；
Display counting equipment calculates the correction coefficient of ultraviolet imager to be measured according to number of photons theoretical value and number of photons device value, shows
Display screen shows the correction coefficient and number of photons theoretical value and number of photons device value.
2. the ultraviolet standard source of hand-held according to claim 1, which is characterized in that
Ultraviolet LED use using single day blind ultraviolet LED.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811447650.5A CN109407028A (en) | 2018-11-29 | 2018-11-29 | A kind of ultraviolet standard source of hand-held |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811447650.5A CN109407028A (en) | 2018-11-29 | 2018-11-29 | A kind of ultraviolet standard source of hand-held |
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| Publication Number | Publication Date |
|---|---|
| CN109407028A true CN109407028A (en) | 2019-03-01 |
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| CN201811447650.5A Pending CN109407028A (en) | 2018-11-29 | 2018-11-29 | A kind of ultraviolet standard source of hand-held |
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Citations (14)
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|---|---|---|---|---|
| CN101187705A (en) * | 2007-12-19 | 2008-05-28 | 中国科学院空间科学与应用研究中心 | Spectrum irradiance standard light source for ultraviolet optical instrument radiometric calibration |
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