CN2612943Y - Micro particle graininess laser imaging measuring apparatus - Google Patents
Micro particle graininess laser imaging measuring apparatus Download PDFInfo
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- CN2612943Y CN2612943Y CN 03235821 CN03235821U CN2612943Y CN 2612943 Y CN2612943 Y CN 2612943Y CN 03235821 CN03235821 CN 03235821 CN 03235821 U CN03235821 U CN 03235821U CN 2612943 Y CN2612943 Y CN 2612943Y
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- light source
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- granularity
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- Investigating Or Analysing Materials By Optical Means (AREA)
Abstract
Disclosed is a micro particle granularity laser imaging measurement equipment, which is characterized in that the micro particle granularity laser imaging measurement equipment comprises a laser power 1, a laser 2, a cylinder mirror 3 and a convex lens4 transforming a light source to a sheet light source, an irradiating measuring canister 8 which is used for filling the scatter thinner and the measured micro particle, an irradiation area 6 which is equipped in the irradiating measuring canister 8 and used for receiving the sheet light source, an optical microscope magnifier 10 which is used for amplifying the scattering light spot of particles, a CCD (Charge Coupled Device)image sensor 11 which screens the light spot of particles, a data collecting card 9 which collects the CCD video signals and transforms the CCD video signals to the digital image signal, a computer 13 which treats the digital image signal and outputs the size and the distribution of the granularity of particles, thereby the micro particle granularity laser imaging measurement equipment has the advantages that the equipment can make the real-time measurement to the micro particle rapidly and more accurately.
Description
Technical field
The utility model relates to a kind of fine particle granularity laser imaging measurement mechanism, particularly is used to measure the image measuring device of fine particle granularity and size distribution thereof on engineering.
Background technology
The measurement of fine particle granularity has on engineering very widely uses, though the method for existing granulometry is a lot, still lacks a kind of intuitively measurement mechanism efficiently.
The utility model content
The utility model aims to provide a kind of fine particle granularity laser imaging measurement mechanism, and it can measure the granularity and the size distribution thereof of fine particle intuitively, fast and exactly.
For reaching this purpose, the utility model provides a kind of fine particle granularity laser imaging measurement mechanism, it is characterized in that: comprise laser power supply 1, laser instrument 2, light source is converted to the cylindrical mirror 3 and the convex lens 4 of thin slice light source, splendid attire disperses the irradiation of thinning agent and fine particle to be measured to measure tube 8, be positioned at irradiation and measure the irradiated site 6 to accept the thin slice light source of tube 8, the optical microphotograph magnifier 10 that the scattering hot spot of particle is amplified, take the ccd image sensor 11 of particle light spot image, gather the CCD vision signal and convert the data collecting card 9 of data image signal to, the processing digital images signal is also exported the granule size of particle and the computing machine 13 of size-grade distribution.
And laser power supply 1 is the pulse laser power supply of controllable pulse width.
And, the electrical connection of pulse laser power supply is: AC power connects two input ends of rectifier 14 through transformer L, between two output terminals of rectifier 14 and the capacitor C 2 of ining succession, the Vm end of C3 and stabilized voltage supply 15 and GND end, the 5V voltage output end of this stabilized voltage supply 15 is respectively through 6 resistance R 1, R2, R3, R4, R5, polyphone mutually between 6 switching positions of R6 and change-over switch K1, the RC of the output terminal of change-over switch K1 order simultaneously steady-state circuit 16, each end of B and CLR, the capacitor C of also contacting between the RC of monostable circuit 16 and the C end, its A termination capture card 9 is to accept synchronous triggering signal, the Q end is through K switch 2, resistance R 7 connects the base stage of triode T, its collector connects the 5V output terminal of stabilized voltage supply 15 through resistance R 8, its emitter is held and ground connection through the GND that light emitting diode D connects stabilized voltage supply 15, and a end of K switch 2 is connected between the 5V voltage end and resistance R 8 of stabilized voltage supply 15.
And, in measuring tube 8, be provided with reflective mirror 7 relatively and perpendicular to thin slice light source direction of illumination place.
And, adopt pci bus 12 to link between data collecting card 9 and the computing machine 13.
And data collecting card 9 is the OK30 video frequency collection card.
This device can directly carry out imaging to particulate, makes this device have the transformable field range of broad by the multiplying power that changes optical loupes, and being fit to the particle diameter scope measured can be by a few μ m to several mm, and can obtain the distribution of granule size simultaneously.Because this device has adopted high-speed data acquisition and image processing techniques, and shortened about 30 seconds the detection time of sample, accuracy of detection is better than 10% (during 〉=10 μ m), has realized the real-time measurement of fine particle granularity substantially.
Description of drawings
Fig. 1 is the synoptic diagram that reflects the utility model structure on the whole.
Fig. 2 is the pulse power supply circuit figure to the laser instrument power supply.
Embodiment
Describe preferred embodiment of the present utility model in detail below in conjunction with accompanying drawing.
See figures.1.and.2, shown in embodiment wherein, fine particle granularity laser imaging measurement mechanism comprises laser power supply 1, laser instrument 2, light source is converted to the cylindrical mirror 3 and the convex lens 4 of thin slice light source, splendid attire disperses the irradiation of thinning agent and fine particle to be measured to measure tube 8, be positioned at irradiation and measure the irradiated site 6 to accept the thin slice light source of tube 8, the optical microphotograph magnifier 10 that the scattering hot spot of particle is amplified, take the ccd image sensor 11 of particle light spot image, gather the CCD vision signal and convert the data collecting card 9 of data image signal to, the processing digital images signal is also exported the granule size of particle and the computing machine 13 of size-grade distribution.
Further technical scheme can be: laser power supply 1 is the pulse laser power supply of controllable pulse width.
Further technical scheme can also be: the electrical connection of pulse laser power supply is: AC power connects two input ends of rectifier 14 through transformer L, between two output terminals of rectifier 14 and the capacitor C 2 of ining succession, the Vm end of C3 and stabilized voltage supply 15 and GND end, the 5V voltage output end of this stabilized voltage supply 15 is respectively through 6 resistance R 1, R2, R3, R4, R5, polyphone mutually between 6 switching positions of R6 and change-over switch K1, the RC of the output terminal of change-over switch K1 order simultaneously steady-state circuit 16, each end of B and CLR, the capacitor C of also contacting between the RC of monostable circuit 16 and the C end, its A termination capture card 9 is to accept synchronous triggering signal, the Q end is through K switch 2, resistance R 7 connects the base stage of triode T, its collector connects the 5V output terminal of stabilized voltage supply 15 through resistance R 8, its emitter is held and ground connection through the GND that light emitting diode D connects stabilized voltage supply 15, and a end of K switch 2 is connected between the 5V voltage end and resistance R 8 of stabilized voltage supply 15.
And, in measuring tube 8, can be provided with reflective mirror 7 relatively and perpendicular to thin slice light source direction of illumination place.
Can adopt pci bus 12 to link between described data collecting card 9 and the computing machine 13.
Described data collecting card 9 can be the OK30 video frequency collection card.
When implementing the technical program, in order to help to make rational selection to the understanding of relevant technologies feature and on this basis according to concrete needs and implementation condition in equivalent technologies, the spy is to the effect of relevant technologies feature and more specifically the content division is as follows:
1, light source: emergent pupil power 40mW is adopted in suggestion, and wavelength is that the red laser diode of 635nm is as light source.Because laser has good directionality, concentrated, the brightness advantages of higher of light beam, in order to shine the particle in tested zone, can obtain contrast scattering spot picture signal preferably.
The optical path cylindrical mirror 3 that laser instrument 2 sends expands bundle, again by convex lens 4 collimations, thereby converts parallel laminar light source 5 to, surveys the particle in district 6 with irradiation.The thickness of thin slice light source 5 is about 1mm, and width is about 20mm.The benefit of thin slice light source 5 is: one, make to survey to distinguish to become very thin, be convenient to optical measuring system and carry out focal imaging for surveying the district; Two, the focal length variations of particle is little before and after surveying in the district, so the particle size distortion is little; Three, the survey district is very thin, and the possibility that the particle hot spot overlaps reduces, and can reduce the error of analytical calculation.
2, measure tube 8: be used for surplus tested particle and the dispersion thinning agent adorned.Measure barrel and made by transparent glass, the cross section is rectangular or circular.Cross-sectional sizes is about 50 * 50mm or φ 80mm, and height is about 60mm.Form shadow at the particle shady face when avoiding unidirectional light source irradiation, make particle shady face soft edge, internal tank vertical plate light source irradiation direction settle a reflective mirror 7 (also can graduated cylinder to wall on plate mercury).Catoptron 7 reflects back the sheet light of incident along original route, illuminate the particle of surveying the district once more, can effectively improve the particle edge image.The effect of thinning agent reduces the coherency of particle, particle is fully dissolved and disperses, is convenient to measurement.The thinning agent that disperses commonly used has water, water+glycerine, ethanol, ethanol+glycerine etc., and thinning agent itself should not react with sample generation chemical physics, and self answers pure inclusion-free, generally uses distilled water more.
3, the optical microphotograph magnifier 10: be made up of general micro magnifier, by adjusting focal length or changing camera lens, can change optical magnification, the multiplying power of the optical loupes of this device is 10x, 50x, 100x, 200x.Can select suitable camera lens according to the size of tested particle.The optical microphotograph magnifier directly links to each other with ccd image sensor, with the particle focal imaging to ccd array.
4, the effect of ccd image sensor 11 is to take particle light spot image down.And converting thereof into video signal output, it is one of core component of this device.This device adopts the black and white camera of universal 420 lines (or 600 lines), and shooting speed is per second 50 frames, and optical sensitivity is 0.05lux, and signal to noise ratio (S/N ratio) is 52dB.
5, the effect of video capture card 9 is that the CCD outputting video signal is carried out high speed acquisition, converts data image signal to, is transferred to computing machine and handles.This device can adopt the OK30 video frequency collection card, and what it adopted is pci bus 12, can realize the high-speed transfer and the collection of data, can work in color mode or white-black pattern.Be operated in this device under the white-black pattern, the gray scale resolution is 256 grades, and picking rate is per second 50 frames.
6, computing machine 13 is realized control and the calculation process of picture signal and result's demonstration to measuring process as the analyzing and processing and the system control component of picture signal.Because the picture signal treatment capacity is big, so require used computing machine to have higher data processing speed and bigger access capability, can adopt universal PIV computing machine, can finish the shooting of a two field picture and the analytical calculation work of granularity in 30 seconds, substantially realized measuring in real time fast of particle size, because computing machine and program itself thereof all belong to prior art, so do not give unnecessary details one by one.
7, pulse laser power supply because particle movement causes streaking, makes the false existing picture that increases of particle in order to overcome, and this device adopts the pulse power to power pulse power supply circuit such as Fig. 2 to laser instrument.Pulse laser power supply comprises: transformer L, rectifier 14, three end DC voltage-stabilizing pieces 15 (chip model 7805), K switch 1, K2, monostable circuit 16 (chip model 4538), triode T and light emitting diode D.Its principle of work is when the synchronous triggering signal of capture card arrives, and triggers monostable circuit 4538 upsets, makes Q end output high level, amplifies by triode T electric current to drive semiconductor laser, produces light pulse output.During the b end that switches to as K2, be pulsed light output, the width of pulse can switch by K1, when K1 is in position R1, pulse width is 0.2ms, when being positioned at R2, R3, R4, R5, R6 position, the then corresponding wide 0.5ms that is respectively of pulse, 1ms, 2ms, 5ms, 10ms; Then continuous light output when lower end that K2 switches to.Adopting another benefit of pulse excitation mode is the serviceable life that can improve laser instrument, but the corresponding increase of power of the laser that requires.
The statistics of the processing of picture signal and the calculating of particle size and size-grade distribution is by being finished automatically by computing machine under the special programmed control.Software mainly comprises following function: the sharpening at the calculating of ground unrest thresholding and the deduction of ground unrest, particle edge and the extraction at edge, binary conversion treatment, particle record and the calculating of particle facula area, the calculating of particle diameter and the calculating of size-grade distribution, result's demonstration and printing.
Obviously, aforementioned computer program is not the scope that the application's case is desired to ask for protection.
What need in addition statement is, preferred embodiment of the present utility model is illustrated, and various variations or the remodeling made by those of ordinary skills are if be that the equivalent technologies of this case will can not break away from protection domain of the present utility model.
Claims (6)
1. a fine particle granularity laser imaging measurement mechanism is characterized in that: comprise laser power supply 1, laser instrument 2, light source is converted to the cylindrical mirror 3 and the convex lens 4 of thin slice light source, splendid attire disperses the irradiation of thinning agent and fine particle to be measured to measure tube 8, be positioned at irradiation and measure the irradiated site 6 to accept the thin slice light source of tube 8, the optical microphotograph magnifier 10 that the scattering hot spot of particle is amplified, take the ccd image sensor 11 of particle light spot image, gather the CCD vision signal and convert the data collecting card 9 of data image signal to, the processing digital images signal is also exported the granule size of particle and the computing machine 13 of size-grade distribution.
2. image measuring device according to claim 1 is characterized in that: laser power supply 1 is the pulse laser power supply of controllable pulse width.
3. image measuring device according to claim 2, it is characterized in that: the electrical connection of pulse laser power supply is: AC power connects two input ends of rectifier 14 through transformer L, between two output terminals of rectifier 14 and the capacitor C 2 of ining succession, the Vm end of C3 and stabilized voltage supply 15 and GND end, the 5V voltage output end of this stabilized voltage supply 15 is respectively through 6 resistance R 1, R2, R3, R4, R5, polyphone mutually between 6 switching positions of R6 and change-over switch K1, the RC of the output terminal of change-over switch K1 order simultaneously steady-state circuit 16, each end of B and CLR, the capacitor C of also contacting between the RC of monostable circuit 16 and the C end, its A termination capture card 9 is to accept synchronous triggering signal, the Q end is through K switch 2, resistance R 7 connects the base stage of triode T, its collector connects the 5V output terminal of stabilized voltage supply 15 through resistance R 8, its emitter is held and ground connection through the GND that light emitting diode D connects stabilized voltage supply 15, and a end of K switch 2 is connected between the 5V voltage end and resistance R 8 of stabilized voltage supply 15.
4. according to claim 1 or 2 or 3 described image measuring devices, it is characterized in that: in measuring tube 8, be provided with reflective mirror 7 relatively and perpendicular to thin slice light source direction of illumination place.
5. image measuring device according to claim 4 is characterized in that: adopt pci bus 12 to link between data collecting card 9 and the computing machine 13.
6. image measuring device according to claim 5 is characterized in that: data collecting card 9 is the 0K30 video frequency collection card.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03235821 CN2612943Y (en) | 2003-03-14 | 2003-03-14 | Micro particle graininess laser imaging measuring apparatus |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03235821 CN2612943Y (en) | 2003-03-14 | 2003-03-14 | Micro particle graininess laser imaging measuring apparatus |
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| CN2612943Y true CN2612943Y (en) | 2004-04-21 |
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| CN 03235821 Expired - Fee Related CN2612943Y (en) | 2003-03-14 | 2003-03-14 | Micro particle graininess laser imaging measuring apparatus |
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Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1313816C (en) * | 2005-01-17 | 2007-05-02 | 国家海洋技术中心 | Image instrument for sand suspended in water |
| CN101852712A (en) * | 2010-05-11 | 2010-10-06 | 北京交通大学 | Device and method for detecting optical detector working point of particle detector |
| CN102033031A (en) * | 2009-09-29 | 2011-04-27 | 希森美康株式会社 | Particle analyser for analysing shape |
| CN102213669A (en) * | 2011-03-17 | 2011-10-12 | 上海理工大学 | Device and method for measuring granularity of dynamic light scattering nano particles of image |
| CN102305757A (en) * | 2011-05-20 | 2012-01-04 | 西安电子科技大学 | Device and method for measuring concentration of high-pressure combustion carbon black particles |
| CN102507416A (en) * | 2011-10-24 | 2012-06-20 | 天津城市建设学院 | Deep-sea high-magnification underwater suspended particle imager |
| CN104833620A (en) * | 2015-04-20 | 2015-08-12 | 江苏苏净集团有限公司 | Atmospheric particulate matter concentration monitoring device |
| CN106525671A (en) * | 2016-12-06 | 2017-03-22 | 湖南七迪视觉科技有限公司 | Combustion particle image acquisition device and method |
| CN107870079A (en) * | 2017-11-06 | 2018-04-03 | 哈尔滨工程大学 | Flow field survey system and measuring method under a kind of model elevating movement |
| CN108051345A (en) * | 2017-12-08 | 2018-05-18 | 天津市联合环保工程设计有限公司 | It is a kind of detect except aldehyde eliminate the unusual smell purifying ball granularity control system and application |
| WO2020001529A1 (en) * | 2018-06-27 | 2020-01-02 | 北京天天极因科技有限公司 | Light sheet fluorescence microscopic imaging device for imaging transparent droplet and test method |
| CN111239012A (en) * | 2020-03-31 | 2020-06-05 | 山东大学 | Aerosol particle detection system and method |
| US11814619B2 (en) | 2021-06-04 | 2023-11-14 | Enumerix, Inc. | Compositions, methods, and systems for single cell barcoding and sequencing |
| US11834714B2 (en) | 2021-12-20 | 2023-12-05 | Enumerix, Inc. | Detection and digital quantitation of multiple targets |
| US12000842B2 (en) | 2021-03-05 | 2024-06-04 | Enumerix, Inc. | Systems and methods for generating droplets and performing digital analyses |
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2003
- 2003-03-14 CN CN 03235821 patent/CN2612943Y/en not_active Expired - Fee Related
Cited By (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1313816C (en) * | 2005-01-17 | 2007-05-02 | 国家海洋技术中心 | Image instrument for sand suspended in water |
| CN102033031A (en) * | 2009-09-29 | 2011-04-27 | 希森美康株式会社 | Particle analyser for analysing shape |
| CN101852712A (en) * | 2010-05-11 | 2010-10-06 | 北京交通大学 | Device and method for detecting optical detector working point of particle detector |
| CN101852712B (en) * | 2010-05-11 | 2012-11-14 | 北京交通大学 | Device and method for detecting optical detector working point of particle detector |
| CN102213669A (en) * | 2011-03-17 | 2011-10-12 | 上海理工大学 | Device and method for measuring granularity of dynamic light scattering nano particles of image |
| CN102305757A (en) * | 2011-05-20 | 2012-01-04 | 西安电子科技大学 | Device and method for measuring concentration of high-pressure combustion carbon black particles |
| CN102305757B (en) * | 2011-05-20 | 2013-04-03 | 西安电子科技大学 | Device and method for measuring concentration of high-pressure combustion carbon black particles |
| CN102507416A (en) * | 2011-10-24 | 2012-06-20 | 天津城市建设学院 | Deep-sea high-magnification underwater suspended particle imager |
| CN104833620A (en) * | 2015-04-20 | 2015-08-12 | 江苏苏净集团有限公司 | Atmospheric particulate matter concentration monitoring device |
| CN104833620B (en) * | 2015-04-20 | 2018-03-13 | 江苏苏净集团有限公司 | A kind of monitoring device of atmosphere particle concentration |
| CN106525671A (en) * | 2016-12-06 | 2017-03-22 | 湖南七迪视觉科技有限公司 | Combustion particle image acquisition device and method |
| CN107870079A (en) * | 2017-11-06 | 2018-04-03 | 哈尔滨工程大学 | Flow field survey system and measuring method under a kind of model elevating movement |
| CN108051345A (en) * | 2017-12-08 | 2018-05-18 | 天津市联合环保工程设计有限公司 | It is a kind of detect except aldehyde eliminate the unusual smell purifying ball granularity control system and application |
| WO2020001529A1 (en) * | 2018-06-27 | 2020-01-02 | 北京天天极因科技有限公司 | Light sheet fluorescence microscopic imaging device for imaging transparent droplet and test method |
| CN111239012A (en) * | 2020-03-31 | 2020-06-05 | 山东大学 | Aerosol particle detection system and method |
| US12000842B2 (en) | 2021-03-05 | 2024-06-04 | Enumerix, Inc. | Systems and methods for generating droplets and performing digital analyses |
| US11814619B2 (en) | 2021-06-04 | 2023-11-14 | Enumerix, Inc. | Compositions, methods, and systems for single cell barcoding and sequencing |
| US11834714B2 (en) | 2021-12-20 | 2023-12-05 | Enumerix, Inc. | Detection and digital quantitation of multiple targets |
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| GR01 | Patent grant | ||
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| CF01 | Termination of patent right due to non-payment of annual fee |