CN103063622A - Portable rapid element composition analyzer - Google Patents
Portable rapid element composition analyzer Download PDFInfo
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- CN103063622A CN103063622A CN2011103236900A CN201110323690A CN103063622A CN 103063622 A CN103063622 A CN 103063622A CN 2011103236900 A CN2011103236900 A CN 2011103236900A CN 201110323690 A CN201110323690 A CN 201110323690A CN 103063622 A CN103063622 A CN 103063622A
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Abstract
The invention belongs to a detection device category, relates to an element spectroscopic analysis method, and particularly relates to a portable rapid element composition analyzer. The portable rapid element composition analyzer provided by the invention comprises a cable front end acquisition part and a cable rear end analyzing part which are connected through an optical fiber and a cable, wherein the front end acquisition part comprises a pulsed laser and a collector, and the laser head of the pulsed laser is aligned with a laser excitation lens assembly in a collector; and the rear end analyzing part comprises a laser power source, a time sequence control plate, a spectrometer and a computer, the time sequence control plate is connected with the spectrometer and the laser power source, and the computer is connected with the spectrometer and the time sequence control plate. The portable rapid element composition analyzer provided by the invention is applicable to industry fields or field fields such as metallurgical industry, geology exploration and environmentally-friendly detection, and can be used for rapidly carrying out qualitative and quantitative analysis on unknown samples; the unknown samples are subjected to qualitative analysis within few seconds, and meanwhile, the required elements are subjected to quantitative analysis; and the portable rapid element composition analyzer is portable, simple in operation and especially suitable for industry or exploration fields which have requirements on analysis time.
Description
Technical field
The invention belongs to the checkout equipment category, relate to element spectrum analysis method, particularly the Portable fast elementary-composition analyser.
Background technology
At present, China's metallurgical industry, the address exploration, the ultimate analysis detection technique of the industries such as environmental protection tests, still with the ICP spectrographic method, X-ray fluorescence method and AAS Determination are main.Although these methods energy accurate analysis go out the constituent content in the sample, will carry out pre-service to sample before analyzing, operative technique is complicated, expends time in, and has wasted in a large number manpower and material resources, even the harm personal safety.Therefore, a kind of application of Portable fast elementary-composition analyser and popularization will produce important and far-reaching impact to our detection industry.
Summary of the invention
For the above-mentioned problems in the prior art, the invention provides and a kind of testing sample is carried out express-analysis and not only had been easy to carry but also Portable fast elementary-composition analyser simple to operate.
The technical scheme that the present invention adopts for achieving the above object is: a kind of Portable fast elementary-composition analyser, comprise the cable front-end collection part and the back-end analysis part that couple together by optical fiber and cable, described front-end collection partly comprises pulsed laser and collector, and the laser head of pulsed laser is aimed at the laser excitation lens combination in the collector;
Described back-end analysis partly comprises Laser Power Devices, sequential control plate, spectrometer and computing machine, and the sequential control plate links to each other with Laser Power Devices with spectrometer, and computing machine links to each other with the sequential control plate with spectrometer.
Described collector comprises spectrum collecting lens group, optical fiber interface, laser excitation lens combination and umbrella angle demodulator, spectrum collecting lens group links to each other with optical fiber interface by the screw thread structure, the front end of spectrum collecting lens group links to each other with the umbrella angle demodulator, and the laser excitation lens combination links to each other with the umbrella angle demodulator.
Described pulsed laser is connected with Laser Power Devices with the water-cooled pipeline by cable.
Described sequential control plate links to each other by the coaxial data line with Laser Power Devices with spectrometer; Described computing machine links to each other by the usb data line with the sequential control plate with spectrometer.
Described spectrum collecting lens group has 6 groups, and mean allocation is collected convergent point in order to regulate on the optical axis direction on collection surface.
Described collection plasma spectrometry by Optical Fiber Transmission in spectrometer.
The spectral signal that described collection is returned can be sent into respectively in the spectrometer of different-waveband.
The angle of described umbrella angle demodulator can cooperate spectrum collecting lens group to adjust in 0-90 degree scope.
Lens position can be regulated in the described laser excitation lens combination, and it act as paired pulses laser convergent point and regulates, to guarantee that laser excitation is on both allocations.
Described optical fiber interface position-adjustable.
The present invention has the following advantages:
1. the use of the industry spot such as the present invention is applicable to metallurgical industry, and explore the address, environmental protection tests or field condition can be carried out qualitative and quantitative analysis to unknown sample fast;
2. the present invention can carry out qualitative analysis to unknown sample within several seconds, simultaneously required element is carried out quantitative test;
3. the present invention is easy to carry, and is simple to operate, is specially adapted to industry or exploration that demand is arranged analysis time on-the-spot.
Description of drawings
Fig. 1 is structural representation of the present invention;
Fig. 2 is the structural representation of collector among the present invention;
Fig. 3 is the front view of umbrella angle demodulator among the present invention;
Fig. 4 is the side view of umbrella angle demodulator among the present invention.
Embodiment
The present invention is described in further detail below in conjunction with drawings and Examples.
As shown in Figure 1, a kind of Portable fast elementary-composition analyser, system adopts the Laser-induced Breakdown Spectroscopy analytic approach, and whole instrument is made of two parts: first is the front-end collection part, and second portion is the back-end analysis part.Described front-end collection partly comprises pulsed laser 4 and collector 10, described collector 10 comprises spectrum collecting lens group 1, optical fiber interface 2, laser excitation lens combination 3 and umbrella angle demodulator 9, the superlaser of pulsed laser 4 emissions converges through laser excitation lens combination 3, shine in the testing sample surface, produce plasma, spectrum collecting lens group 1 plasma spectrum is collected, and with its by Optical Fiber Transmission in described back-end analysis part, carry out the host computer analysis;
Described back-end analysis partly comprises Laser Power Devices 5, sequential control plate 6, spectrometer 7 and computing machine 8, and sequential control plate 6 links to each other with Laser Power Devices 5 with spectrometer 7, and computing machine 8 links to each other with sequential control plate 6 with spectrometer 7.By the clock signal of computing machine 8 control sequential control plates 6 generations, with the sequential relationship of control spectrometer 7 and Laser Power Devices 5.
Described pulsed laser 4 is connected with Laser Power Devices 5 with the water-cooled pipeline by cable.
Described sequential control plate 6 links to each other by the coaxial data line with Laser Power Devices 5 with spectrometer 7.
Described computing machine 8 links to each other by the usb data line with sequential control plate 6 with spectrometer 7.
Described spectrum collecting lens group 1 has 6 groups, and mean allocation is collected convergent point in order to regulate on the optical axis direction on collection surface.
Described collection plasma spectrometry by Optical Fiber Transmission in spectrometer 7.
The spectral signal that described collection is returned can be sent into respectively in the spectrometer 7 of different-waveband.
The angle of described umbrella angle demodulator 9 can cooperate spectrum collecting lens group 1 to adjust in 0-90 degree scope.
Described laser excitation lens combination 3 interior lens positions can be regulated, and it act as paired pulses laser convergent point and regulates, to guarantee that laser excitation is on both allocations.
Described optical fiber interface 2 position-adjustable.
As shown in Figure 2, collector 10 comprises spectrum collecting lens group 1, optical fiber interface 2, laser excitation lens combination 3 and umbrella angle demodulator 9, spectrum collecting lens group 1 links to each other with optical fiber interface 2 by the screw thread structure, the front end of spectrum collecting lens group 1 links to each other with umbrella angle demodulator 9, and laser excitation lens combination 3 links to each other with umbrella angle demodulator 9.
As shown in Figure 3 and Figure 4, the bottom surface of umbrella angle demodulator 9 is the regular hexagon structure, and on the side view plane, the angle that its umbrella is opened can be regulated, its adjusting angle is the 0-90 degree, can collect the plasma spectrometry spectral line at axis direction to guarantee spectrum collecting lens group 1.
When required the test, determinand is positioned over the probe front end of pulsed laser 4, or hand-held portable devices, press close to determinand.Described back-end analysis partly places temperature stabilization, and the safety zone that power-supply fluctuation is little is in order to avoid be interfered.By computing machine 8, send finger to sequential control plate 6.Sequential control plate 6 gating pulse laser instruments 4 concern with the work schedule of spectrometer 7.Pulsed laser 4 is opened spectrometer 7 within tens microseconds behind the activated plasma, just can collect plasma spectrometry.Analyze by computing machine plasma spectrum, draw in real time the component concentration of sample.
What pulsed laser 4 adopted is the DAWA200 type of the precious company of radium, and the output energy range is 0-200mJ.Generally in actual use, adopting energy is the spectrum output image that 100mJ can obtain stability and high efficiency, also can specifically regulate laser energy according to the situation at scene simultaneously.
What spectrometer 7 adopted is the HR2000+ range of models spectrometer of marine optics company, by integrated different wave band, can realize from ultraviolet, visible light to infrared full spectral coverage spectrum identification.The 6 channel spectrum instrument that adopt at present can be by measure spectrum scope 200-820nm, and this spectral range section has been included the characteristic spectral line of most of common elements, applicable to the qualitative and quantitative analysis of various elements.
Because the life cycle of plasma is very short, only have tens microseconds, and at the plasma generation initial stage, its characteristic spectral line is not obvious, so after needing accurate control plasma generation, the acquisition time of spectrometer 7.Sequential control plate 6, can be in the scope of 655.35 microseconds, regulate the lamp Q time-delay of laser instrument with the step-length of 0.01 microsecond, and the delay that begins to gather with spectrometer 7 behind pulsed laser 4 activated plasmas, can split hair control computing machine, the sequential relationship of spectrometer 7 and pulsed laser 4.
Simultaneously, based on above parameter, for different application conditions, the user can carry out the correction of different parameters lower eigenvalue voluntarily according to the difference originally of institute's test sample, sets up experimental data base, makes measurement result more accurately and reliably.
Claims (10)
1. Portable fast elementary-composition analyser, it is characterized in that, comprise the cable front-end collection part and the back-end analysis part that couple together by optical fiber and cable, described front-end collection partly comprises pulsed laser (4) and collector (10), and the laser head of pulsed laser (4) is aimed at the laser excitation lens combination (3) in the collector (10);
Described back-end analysis partly comprises Laser Power Devices (5), sequential control plate (6), spectrometer (7) and computing machine (8), sequential control plate (6) links to each other with Laser Power Devices (5) with spectrometer (7), and computing machine (8) links to each other with sequential control plate (6) with spectrometer (7).
2. Portable fast elementary-composition analyser according to claim 1, it is characterized in that, described collector (10) comprises spectrum collecting lens group (1), optical fiber interface (2), laser excitation lens combination (3) and umbrella angle demodulator (9), spectrum collecting lens group (1) links to each other with optical fiber interface (2) by the screw thread structure, the front end of spectrum collecting lens group (1) links to each other with umbrella angle demodulator (9), and laser excitation lens combination (3) links to each other with umbrella angle demodulator (9).
3. Portable fast elementary-composition analyser according to claim 1 is characterized in that, described pulsed laser (4) is connected with Laser Power Devices (5) with the water-cooled pipeline by cable.
4. Portable fast elementary-composition analyser according to claim 1 is characterized in that, described sequential control plate (6) links to each other by the coaxial data line with Laser Power Devices (5) with spectrometer (7); Described computing machine (8) links to each other by the usb data line with sequential control plate (6) with spectrometer (7).
5. Portable fast elementary-composition analyser according to claim 1 is characterized in that, described spectrum collecting lens group (1) has 6 groups, and mean allocation is collected convergent point in order to regulate on the optical axis direction on collection surface.
6. Portable fast elementary-composition analyser according to claim 1 is characterized in that, described collection plasma spectrometry arrives in the spectrometer (7) by Optical Fiber Transmission.
7. according to claim 5 or 6 described Portable fast elementary-composition analysers, it is characterized in that, collect the spectral signal of returning and to send into respectively in the spectrometer (7) of different-waveband.
8. Portable fast elementary-composition analyser according to claim 1 is characterized in that, the angle of described umbrella angle demodulator (9) can cooperate spectrum collecting lens group (1) to adjust in 0-90 degree scope.
9. Portable fast elementary-composition analyser according to claim 1 is characterized in that, the interior lens position of described laser excitation lens combination (3) can be regulated.
10. Portable fast elementary-composition analyser according to claim 1 is characterized in that, described optical fiber interface (2) position-adjustable.
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| CN201110323690.0A CN103063622B (en) | 2011-10-21 | 2011-10-21 | Portable rapid element composition analyzer |
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| CN201110323690.0A CN103063622B (en) | 2011-10-21 | 2011-10-21 | Portable rapid element composition analyzer |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103558191A (en) * | 2013-09-27 | 2014-02-05 | 武汉新瑞达激光工程有限责任公司 | Portable laser probe component analyzer |
| CN103743710A (en) * | 2013-12-28 | 2014-04-23 | 华中科技大学 | Portable laser probe component analyzer based on optical fiber laser |
| CN104931462A (en) * | 2014-03-17 | 2015-09-23 | 以恒科技(北京)有限公司 | Mixed light source focusing enhancing plasma detection system |
| CN106468660A (en) * | 2016-10-28 | 2017-03-01 | 河钢股份有限公司 | A kind of on-line quick detection device for steel scrap and metal |
| CN106654828A (en) * | 2017-02-20 | 2017-05-10 | 绍兴文理学院 | Short pulse laser used for product component analysis and product component analysis method |
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| CN103743710B (en) * | 2013-12-28 | 2015-11-04 | 华中科技大学 | Based on the portable laser probe analytical instrument of fiber laser |
| CN104931462A (en) * | 2014-03-17 | 2015-09-23 | 以恒科技(北京)有限公司 | Mixed light source focusing enhancing plasma detection system |
| CN106468660A (en) * | 2016-10-28 | 2017-03-01 | 河钢股份有限公司 | A kind of on-line quick detection device for steel scrap and metal |
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| CN106654828A (en) * | 2017-02-20 | 2017-05-10 | 绍兴文理学院 | Short pulse laser used for product component analysis and product component analysis method |
| CN106654828B (en) * | 2017-02-20 | 2019-02-05 | 绍兴文理学院 | Short-pulse laser and product composition analysis method for product composition analysis |
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| CN103063622B (en) | 2015-04-29 |
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