CN206974906U - Lump material LIBS technology on-line measuring devices on conveyer belt - Google Patents
Lump material LIBS technology on-line measuring devices on conveyer belt Download PDFInfo
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- CN206974906U CN206974906U CN201720967071.8U CN201720967071U CN206974906U CN 206974906 U CN206974906 U CN 206974906U CN 201720967071 U CN201720967071 U CN 201720967071U CN 206974906 U CN206974906 U CN 206974906U
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- pulse laser
- conveyer belt
- spectrometer
- lump material
- measuring devices
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Abstract
It the utility model is related to lump material LIBS technology on-line measuring devices in field of spectral analysis technology, more particularly to a kind of conveyer belt.Current LIBS online measuring techniques are solved when detecting lump material because height of materials changes, exists and is difficult to accurate analysis, the technical problem of optical system adjustment difficulty.Lump material LIBS technology on-line measuring devices on a kind of conveyer belt, including pulse laser, range unit, spectrometer and data handling system；The exit end of pulse laser is provided with the zoom lens for carrying motor；The signal output part of range unit is connected with a signal processing unit；Also include stepper motor drives, TTL signal generator and delay controller.The utility model is compared with the prior art, the device realizes the auto-focusing when height of materials changes using zoom lens, realize focal distance in interior regulation in a big way by less zoom stroke adjustment, greatly shorten mechanical adjustment stroke, bear a heavy burden, control accuracy is high, governing speed is fast, and long-time stability are good.
Description
Technical field
Lump material LIBS technologies in field of spectral analysis technology, more particularly to a kind of conveyer belt are the utility model is related to exist
Line detector.
Background technology
LIBS（LIBS）It is a kind of material composition detection technology based on emission spectrum.Use Gao Gong
The pulse laser of rate density makes the atom ionization that is excited of near sample surface form plasma through lens focus to sample surfaces
Body, element composition and content in sample would know that by the wavelength and intensity that measure plasma spontaneous radiation spectral line.Compare
In traditional detection method, LIBS technologies have measuring speed it is fast, without sample pretreatment, can Simultaneous multi element analysis, radiationless
Etc. advantage, real-time, the on-line checking to material composition are especially suitable for.In works such as electric power, colliery, metallurgy, cement, farming analyte detections
There is wide application potential in agricultural production process control.
Carrying out analysis with LIBS technologies need to be by Laser Focusing to sample surfaces, it is therefore desirable to ensures that sample surfaces are saturating to focusing on
The constant distance of mirror, conventional art will be measured to sample room or after sample tabletting sample collection, program by sampler
It is complicated, time-consuming, measurement result hysteresis, influence on-line analysis result.To meet the real-time demand of commercial measurement, it is necessary to directly right
Material on conveyer belt carries out LIBS analyses.Current existing on-line analysis technology and device are mainly for powder analyte detection, such as
Coal dust, clinker etc., by baffle plate by conveyer belt surface powder material strike off or use injection apparatus by powder material with
Certain speed sprays, and forms flat surface.And for the block on conveyer belt, due to it differs in size, skewness, space
Rate is big, and surface is uneven, and on-line analysis is more difficult, solid mass on-line analysis is studied both at home and abroad at present less.With
M. Gaft et al. of color row develop a kind of to massive minerals composition on-line analysis device, are measured and passed with supersonic range finder
Send and take height of materials, feed back to aero-mechanical device, adjustment in real time includes the height of the whole optical system of condenser lens, real
Existing lens and sample room constant distance.The system program is complicated, and whole optical system includes laser, lens, spectrum and visited
Module is surveyed, is sealed in be dust-proof in metal-back, overall weight is about 25-40Kg, heavy burden ability, control to Machinery Control System
Precision and response speed processed have higher requirements, and mechanical wear is big, maintenance period is short.
The content of the invention
The utility model is deposited to solve current LIBS online measuring techniques when detecting lump material because height of materials changes
It is being difficult to the technical problem of accurate analysis and optical system adjustment difficulty, there is provided lump material LIBS technologies on a kind of conveyer belt
On-line measuring device.
The utility model adopts the following technical scheme that realization：Lump material LIBS technologies are examined online on a kind of conveyer belt
Survey device, including pulse laser, range unit, spectrometer and the data handling system being connected with spectrometer；The arteries and veins
Rush laser and range unit is respectively positioned on the surface of conveyer belt and range unit is located at conveyer belt upstream than pulse laser；
Spectrometer is used to receive the plasma fluorescence excited after laser light incident to the material to be measured that pulse laser is emitted；Pulse swashs
The exit end of light device is provided with the zoom lens for carrying motor；The signal output part of range unit is connected with a signal transacting list
Member；Also include stepper motor drives, TTL signal generator and delay controller；The signal output of the signal processing unit
End is connected with the signal input part of stepper motor drives, and signal output part and the zoom lens of stepper motor drives carry
Motor drive end be connected；The signal output part of TTL signal generator is connected with the signal input part of delay controller；Prolong
When controller signal output part the voltage controling end with pulse laser, the control terminal of spectrometer and stepper motor drive respectively
The Enable Pin of dynamic device is connected；The signal output part of TTL signal generator is also connected with the control terminal of range unit.
Pulse is sent with certain frequency by TTL signal generator, after control range unit measures height of materials, range unit
By data transfer to signal processing unit, signal processing unit calculates zoom lens target according to the height of materials of the point
Focal length, and number of rotation needed for target focal length to be scaled to the stepper motor on zoom lens, are waited to be triggered；TTL letters simultaneously
Number postpone through delay controllerL/v（vFor line speed,LFor the horizontal range of range unit and pulse laser, Fig. 1 institutes are seen
Show）After time, on the one hand pulse laser is controlled to send pulse laser, now measured point material is just sent to pulse laser
Underface, the Enable Pin of stepper motor drives is on the other hand added to as trigger signal, makes driver according to required swing
Number sends drive signal and is applied to zoom lens motor, drives the zoom ring of camera lens to rotate, and camera lens focus is located just at lower section
On material.The pulse laser that pulse laser is sent acts on lower section surface of material after being assembled by zoom lens, swashed it
Hair forms plasma, and plasma is assembled by same camera lens again；After pulse laser sends pulse laser, delay controller
Control starts work after spectrometer delay certain time, spectrometer collection passes through the plasma fluorescence of zoom lens convergence, by
Spectrometer reaches data handling system after being divided to it, and material component and content are analyzed.
Further, in addition to the speculum that is located between pulse laser exit end and zoom lens and it is located at reflection
Fiber coupling lens and optical fiber on mirror reflected light path；The optical fiber is connected with spectrometer signal input part；The speculum
On be provided with hole can make pulse laser be emitted laser beam pass through；Speculum is to by plasma fluorescent reflection to fiber coupling
Lens；Fiber coupling lens will be sent to spectrometer after plasma fluorescent foci by optical fiber.
Plasma fluorescence is first reflected after zoom lens is assembled by speculum, then is coupled to light by fiber coupling lens
In fibre and transmit to spectrometer.
The utility model discloses a kind of LIBS blocks on-line measuring device, by zoom technology, without adjust lens and
Distance between sample surfaces, realize that pulse laser focus after zoom lens is assembled is located at sample surfaces, to block on conveyer belt
Thing carries out real-time online LIBS detections.Compared with the prior art, the device realizes focusing by less zoom stroke adjustment
From in interior regulation in a big way, greatly shortening mechanical adjustment stroke, bearing a heavy burden, control accuracy is high, and governing speed is fast, long-time stability
It is good.
Brief description of the drawings
Fig. 1 the utility model structure diagrams.
1- pulse lasers, 2- fiber coupling lens, 3- range units, 4- spectrometers, 5- zoom lens, 6- signal transactings
Unit, 7- stepper motor drives, 8- TTL signal generators, 9- delay controllers, 10- speculums, 11- capsuls, 12- glass
Glass level crossing, 13- optical fiber, 14- conveyer belts, 15- materials to be measured, 16- blow devices.
Embodiment
Lump material LIBS technology on-line measuring devices on a kind of conveyer belt, including pulse laser 1, range unit 3, light
Spectrometer 4 and the data handling system being connected with spectrometer 4；The pulse laser 1 and range unit 3 are respectively positioned on conveyer belt
14 surface and range unit 3 is located at the upstream of conveyer belt 14 than pulse laser 1；Spectrometer 4 is used to receive pulse laser
The plasma fluorescence excited after laser light incident to the material 15 to be measured that device 1 is emitted；The exit end of pulse laser 1 is provided with certainly
Zoom lens 5 with motor；The signal output part of range unit 3 is connected with a signal processing unit 6；Also include stepper motor
Driver 7, TTL signal generator 8 and delay controller 9；The signal output part of the signal processing unit 6 drives with stepper motor
The signal input part of dynamic device 7 is connected, and the motor that signal output part and the zoom lens 5 of stepper motor drives 7 carry drives
End is connected；The signal output part of TTL signal generator 8 is connected with the signal input part of delay controller 9；Delay controller
9 the signal output part voltage controling end with pulse laser 1, the control terminal of spectrometer 4 and stepper motor drives 7 respectively
Enable Pin be connected；Control terminal of the signal output part of TTL signal generator 8 also with range unit 3 is connected.
Also include being located at the speculum 10 between the exit end of pulse laser 1 and zoom lens 5 and be located at speculum 10
Fiber coupling lens 2 and optical fiber 13 on reflected light path；The optical fiber 13 is connected with the signal input part of spectrometer 4；It is described anti-
Penetrate on mirror 10 be provided with hole can make pulse laser 1 be emitted laser beam pass through；Speculum 10 is to by plasma fluorescent reflection
To fiber coupling lens 2；Fiber coupling lens 2 will be sent to spectrometer 4 after plasma fluorescent foci by optical fiber 13.
Also include capsul 11；The pulse laser 1, speculum 10, zoom lens 5 and fiber coupling lens 2 are equal
Inside capsul 11；Pulse laser 1, speculum 10 and zoom lens 5 are from top to bottom arranged in capsul 11 successively
Portion；The lower end of capsul 11 is equipped with glass planar mirror 12；The lateral opening hole of capsul 11 and fixed optical fiber 13.
Range unit 3 uses laser range sensor；Delay controller 9 uses DG535 delay controllers.
The bottom outside of capsul 11 is additionally provided with blow device 16 by glass planar mirror 12.
Control letter is sent with 10Hz frequency to sample continuous on-line analysis on conveyer belt, TTL signal generator to realize
Feel the pulse punching, i.e. the working frequency of laser range sensor and pulse laser is 10Hz.Stepping in view of zoom lens becomes
The time required to the response time of burnt motor and zoom rotate, stepper motor should be driven before laser pulse is sent, while also should be
After last impulsive measurement is completed.Laser pulse working frequency is 10Hz in this programme, that is, is spaced 100ms, so in laser
50ms Driving Stepping Motors before pulse is sent.
The zoom lens focal length is 200~500mm, and its lower end is about apart from the height of material average central
350mm（In Fig. 1 shown in a）, when height of materials changes in ± 150mm on conveyer belt, can accurately focus on.
The laser range sensor is adjustable within the specific limits along conveyer belt direction.When distance measuring sensor and laser
Horizontal range between deviceLWhen too small, the time used in material from point distance measurement to pulse laser measurement point is extremely short, and stepper motor has little time to do
Go out response, camera lens does not have enough time to complete zoom；WhenLWhen excessive, material is transmitted across from point distance measurement to pulse laser measurement point
Possible relative conveyer belt is moved in journey, and controlling level changes, it is impossible to accurate to focus on.Generally, transmission belt passes
Defeated speed is about 3m/s, so in this example,LCan be adjustable in the range of 20~50cm, depending on line speed.Spectrometer exists
Pulse laser starts after sending laser, and time delay is generally 200 ~ 500ns.
Field working conditions are complicated, and consideration is dust-proof, and the optical system includes laser, zoom lens, speculum, fiber coupling
Lens, it is sealed in a steel capsul, ensures light path from dust pollution.A glass planar mirror is filled in shell lower end, as
Incident laser and the passage for exciting caused plasma spectrum, and blow device is set beside lower end plane mirror, reduce dust
Pollution, keep mirror cleaning.The plasma spectrometry being collected into is assembled after speculum reflects by fiber coupling lens, is passed through
Fiber optic conduction carries out follow-up spectrum analysis into spectrometer.
Claims (5)
1. lump material LIBS technology on-line measuring devices on a kind of conveyer belt, including pulse laser（1）, range unit（3）、
Spectrometer（4）And and spectrometer（4）The data handling system being connected；The pulse laser（1）And range unit（3）
Positioned at conveyer belt（14）Surface and range unit（3）Than pulse laser（1）Positioned at conveyer belt（14）Upstream；Spectrometer
（4）For receiving pulse laser（1）The laser light incident of outgoing is to material to be measured（15）The plasma fluorescence excited afterwards；Its
It is characterised by, pulse laser（1）Exit end be provided with and carry the zoom lens of motor（5）；Range unit（3）Signal output
End is connected with a signal processing unit（6）；Also include stepper motor drives（7）, TTL signal generator（8）And delay control
Device processed（9）；The signal processing unit（6）Signal output part and stepper motor drives（7）Signal input part be connected,
Stepper motor drives（7）Signal output part and zoom lens（5）The motor drive end carried is connected；TTL signal occurs
Device（8）Signal output part and delay controller（9）Signal input part be connected；Delay controller（9）Signal output part
Respectively with pulse laser（1）Voltage controling end, spectrometer（4）Control terminal and stepper motor drives（7）It is enabled
End is connected；TTL signal generator（8）Signal output part also with range unit（3）Control terminal be connected.
2. lump material LIBS technology on-line measuring devices on conveyer belt as claimed in claim 1, it is characterised in that also include
It is located at pulse laser（1）Exit end and zoom lens（5）Between speculum（10）And it is located at speculum（10）Reflected light
Fiber coupling lens on road（2）And optical fiber（13）；The optical fiber（13）With spectrometer（4）Signal input part is connected；It is described
Speculum（10）On be provided with hole and can make pulse laser（1）The laser beam of outgoing passes through；Speculum（10）To by plasma
Fluorescent reflection is to fiber coupling lens（2）；Fiber coupling lens（2）Optical fiber will be passed through after plasma fluorescent foci（13）Transmission
To spectrometer（4）.
3. lump material LIBS technology on-line measuring devices on conveyer belt as claimed in claim 2, it is characterised in that also include
Capsul（11）；The pulse laser（1）, speculum（10）, zoom lens（5）And fiber coupling lens（2）It is respectively positioned on
Capsul（11）It is internal；Pulse laser（1）, speculum（10）And zoom lens（5）Capsul is from top to bottom arranged in successively
（11）It is internal；Capsul（11）Lower end is equipped with glass planar mirror（12）；Capsul（11）Lateral opening hole and fixed optical fiber（13）.
4. lump material LIBS technology on-line measuring devices on the conveyer belt as described in any one of claim 1 ~ 3, its feature exist
In range unit（3）Using laser range sensor；Delay controller（9）Using DG535 delay controllers.
5. lump material LIBS technology on-line measuring devices on conveyer belt as claimed in claim 3, it is characterised in that capsul
（11）Bottom outside is in glass planar mirror（12）Side is additionally provided with blow device（16）.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720967071.8U CN206974906U (en) | 2017-08-04 | 2017-08-04 | Lump material LIBS technology on-line measuring devices on conveyer belt |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720967071.8U CN206974906U (en) | 2017-08-04 | 2017-08-04 | Lump material LIBS technology on-line measuring devices on conveyer belt |
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| Publication Number | Publication Date |
|---|---|
| CN206974906U true CN206974906U (en) | 2018-02-06 |
Family
ID=61394115
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720967071.8U Expired - Fee Related CN206974906U (en) | 2017-08-04 | 2017-08-04 | Lump material LIBS technology on-line measuring devices on conveyer belt |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109211879A (en) * | 2018-08-31 | 2019-01-15 | 王寅 | A kind of gas remote measurement device and method |
| CN110361325A (en) * | 2019-06-21 | 2019-10-22 | 中国海洋大学 | A kind of spectroscopic analysis system based on slr camera |
| CN110449373A (en) * | 2019-08-15 | 2019-11-15 | 南京航空航天大学 | A kind of adaptive material high-efficiency picks up sorting unit and method |
| CN111380860A (en) * | 2020-03-25 | 2020-07-07 | 中国科学院沈阳自动化研究所 | Online monitoring device and method for components of powder materials on conveyor belt |
| CN111999280A (en) * | 2020-08-18 | 2020-11-27 | 呼和浩特市环境科学研究所 | Need not surface water heavy metal real-time detection system of sample |
| CN113740313A (en) * | 2021-02-04 | 2021-12-03 | 聚光科技(杭州)股份有限公司 | Online detection device and method based on LIBS technology |
| CN114166829A (en) * | 2021-12-08 | 2022-03-11 | 华中科技大学鄂州工业技术研究院 | Slurry uniformity detection system and method |
| CN114216896A (en) * | 2021-11-18 | 2022-03-22 | 合肥正阳光电科技有限责任公司 | Laser monitoring station and laser detection method for online rapid identification of steel number plate |
| WO2022192982A1 (en) * | 2021-03-19 | 2022-09-22 | National Research Council Of Canada | System for the online sorting of ore samples based on a mineralogy analysis |
| CN115468948A (en) * | 2022-11-15 | 2022-12-13 | 中国科学院沈阳自动化研究所 | Laser-induced breakdown spectroscopy on-line detection device and method for material with fluctuating motion |
| CN117074389A (en) * | 2023-07-25 | 2023-11-17 | 河北大学 | Online detection system and detection method for inorganic harmful trace elements in water body |
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Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109211879A (en) * | 2018-08-31 | 2019-01-15 | 王寅 | A kind of gas remote measurement device and method |
| CN110361325A (en) * | 2019-06-21 | 2019-10-22 | 中国海洋大学 | A kind of spectroscopic analysis system based on slr camera |
| CN110449373A (en) * | 2019-08-15 | 2019-11-15 | 南京航空航天大学 | A kind of adaptive material high-efficiency picks up sorting unit and method |
| CN111380860A (en) * | 2020-03-25 | 2020-07-07 | 中国科学院沈阳自动化研究所 | Online monitoring device and method for components of powder materials on conveyor belt |
| CN111999280B (en) * | 2020-08-18 | 2024-02-09 | 呼和浩特市环境科学研究所 | Real-time detection system for heavy metals in surface water without sampling |
| CN111999280A (en) * | 2020-08-18 | 2020-11-27 | 呼和浩特市环境科学研究所 | Need not surface water heavy metal real-time detection system of sample |
| CN113740313A (en) * | 2021-02-04 | 2021-12-03 | 聚光科技(杭州)股份有限公司 | Online detection device and method based on LIBS technology |
| WO2022192982A1 (en) * | 2021-03-19 | 2022-09-22 | National Research Council Of Canada | System for the online sorting of ore samples based on a mineralogy analysis |
| CN114216896A (en) * | 2021-11-18 | 2022-03-22 | 合肥正阳光电科技有限责任公司 | Laser monitoring station and laser detection method for online rapid identification of steel number plate |
| CN114166829A (en) * | 2021-12-08 | 2022-03-11 | 华中科技大学鄂州工业技术研究院 | Slurry uniformity detection system and method |
| CN114166829B (en) * | 2021-12-08 | 2023-09-19 | 华中科技大学鄂州工业技术研究院 | Slurry uniformity detection system and method |
| CN115468948A (en) * | 2022-11-15 | 2022-12-13 | 中国科学院沈阳自动化研究所 | Laser-induced breakdown spectroscopy on-line detection device and method for material with fluctuating motion |
| CN117074389A (en) * | 2023-07-25 | 2023-11-17 | 河北大学 | Online detection system and detection method for inorganic harmful trace elements in water body |
| CN117074389B (en) * | 2023-07-25 | 2024-03-29 | 河北大学 | Online detection system and detection method for inorganic harmful trace elements in water body |
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