CN216411059U - Portable laser perception spectrum element analysis detection device - Google Patents
Portable laser perception spectrum element analysis detection device Download PDFInfo
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- CN216411059U CN216411059U CN202123016759.3U CN202123016759U CN216411059U CN 216411059 U CN216411059 U CN 216411059U CN 202123016759 U CN202123016759 U CN 202123016759U CN 216411059 U CN216411059 U CN 216411059U
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Abstract
The utility model belongs to the technical field of spectral measurement, and relates to a portable laser sensing spectral element analysis and detection device which comprises a barrel-shaped shell, wherein a handle is arranged on the side wall of the shell, an industrial tablet personal computer is arranged at the top of the shell, a piezoelectric platform and a multi-channel spectrometer are arranged on a bottom plate of the shell, a camera, a laser generator and a lens integration seat are also arranged in the shell, a focusing lens and a light collecting lens are arranged on the lens integration seat, the camera and the multi-channel spectrometer are respectively positioned at two sides of the piezoelectric platform, the laser generator is positioned above the piezoelectric platform, and the lens integration seat is positioned between the laser generator and the piezoelectric platform; the piezoelectric platform, the camera and the multi-channel spectrometer are in signal connection with the industrial tablet computer. The analysis and detection device has good overall portability and universality, can be used for real-time online detection in the field, and has better practicability.
Description
Technical Field
The utility model belongs to the technical field of spectral measurement, relates to an element imaging analysis system, and particularly relates to a portable laser sensing spectral element analysis and detection device.
Background
The Laser Induced Breakdown Spectroscopy (LIBS) detection technology is an element detection technology developed in recent years and belongs to atomic emission Spectroscopy. The basic principle of the LIBS technique is that after high-energy laser is focused on the surface of a sample, the temperature at the focus of the sample surface is rapidly increased, atoms are separated from the surface of the sample by local high temperature and rapidly expand outwards, during the expansion process, part of the atoms generate thermal electrons under the action of a strong laser field, and the initial free electrons further collide with other atoms to finally form plasma. The qualitative and quantitative analysis of the element components and contents in the plasma can be carried out by measuring the luminescence of the plasma through a multi-channel spectrometer.
The LIBS technology does not need complex sample pretreatment, has simple system structure and quick operation, and can simultaneously and quickly carry out real-time and online measurement on gas, liquid and solid. The technology is rapidly developed in recent years, and the technology has important research results in the fields of biomedical research, military safety, universal space exploration, industrial processing flow control, real-time environmental pollution detection and the like.
The LIBS technology can be used for detecting the content of various elements in the farmland in real time. In the planting of Chinese medicinal material soil, the soil components contain trace elements required by human body, and also contain heavy metal compounds of chromium, nickel, mercury and the like. The LIBS technology can well perform real-time online detection on various elements in a farmland, and can also obtain the distribution condition of the concentration of the element to be detected on the surface of a sample, although the LIBS technology has unique advantages in the field of element analysis, the development of the LIBS technology still stays in the development stage of a laboratory so far, LIBS analysis instruments are few, and the LIBS technology is poor in universality. Therefore, it is necessary to provide a detection apparatus which can stably analyze LIBS spectral signals, has a simple operation procedure, is portable, has high efficiency, and can realize surface quantitative analysis of element concentration.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a portable laser sensing spectral analysis detection device which can efficiently realize online real-time measurement so as to solve the problem that the detection of various substance elements limited in a laboratory, such as the real-time detection of the content of heavy metal elements in a farmland, is inconvenient.
In order to achieve the purpose, the utility model adopts the technical scheme that: a portable laser perception spectrum element analysis and detection device comprises a barrel-shaped shell, wherein an industrial tablet personal computer is installed at the top of the shell, a piezoelectric platform and a multi-channel spectrometer are installed on a bottom plate of the shell, a camera, a laser generator and a lens integration seat are further installed in the shell, a focusing lens and a light collecting lens are installed on the lens integration seat, the camera and the multi-channel spectrometer are respectively located on two sides of the piezoelectric platform, the laser generator is located above the piezoelectric platform, and the lens integration seat is located between the laser generator and the piezoelectric platform; the piezoelectric platform, the camera and the multi-channel spectrometer are in signal connection with the industrial tablet computer.
The shell is also internally provided with a power supply which is respectively and electrically connected with the piezoelectric platform, the multi-channel spectrometer, the camera, the laser generator and the industrial tablet computer.
The utility model has the following advantages:
1. four light receiving lenses are circumferentially arranged around the focusing lens, the focusing positions of the four light receiving lenses are adjustable, the focusing lens and the four light receiving lenses are kept consistent, the diffuse reflection of laser is reduced, the interference resistance is realized, the light receiving amount is increased, the spectral information loss is reduced, and the detection accuracy is improved;
2. the portability is good, field operation can be realized, real-time on-line detection on the spot is realized, a sample does not need to be sent to a laboratory, the time is saved, and the detection efficiency is improved;
3. the universality is good, the equipment operation is simple, the detection efficiency is high, and qualitative and quantitative analysis of internal elements of the sample can be quickly carried out;
4. the integration level is high, through industry panel computer integrative control camera, multichannel spectrum appearance, piezoelectric platform and laser generator, compares in traditional LIBS system, realizes a tractor serves several purposes, has reduced the equipment volume.
Drawings
FIG. 1 is a schematic view of an analytical test device according to the present invention;
FIG. 2 is a schematic view of the lens holder assembly shown in FIG. 1;
FIG. 3 is a schematic diagram of the positions of the focusing lens and the light collecting lens in FIG. 1;
in the figure: the device comprises a shell 1, a piezoelectric platform 2, a sample target 3, a multichannel spectrometer 4, a camera 5, a laser generator 6, a focusing lens 7, an industrial tablet computer 8, a USB interface 9, a handle 10, a light collecting lens 11, a lens integrated base 12, an upper mounting plate 121, a lower mounting plate 122, a connecting plate 123, a through hole 13, a light collecting lens mounting hole 14 and a focusing lens mounting hole 15.
Detailed Description
The utility model is further explained below with reference to the drawings and the detailed description.
As shown in fig. 1, the analysis and detection device of the present invention comprises a barrel-shaped housing 1, a handle 10 is disposed on a side wall of the housing 1, an industrial tablet computer 8 is mounted on a top of the housing 1, a piezoelectric platform 2 and a multi-channel spectrometer 4 are mounted on a bottom plate of the housing 1, a camera 5, a laser generator 6 and a lens integration seat 12 are further mounted in the housing 1, a focusing lens 7 and a light collecting lens 11 are mounted on the lens integration seat 12, the camera 5 and the multi-channel spectrometer 4 are respectively located on two sides of the piezoelectric platform 2, the laser generator 6 is located above the piezoelectric platform 2, the lens integration seat 12 is located between the laser generator 6 and the piezoelectric platform 2, the camera 5 and the multi-channel spectrometer 4 are all in signal connection with the industrial tablet computer 8.
As shown in fig. 2, the lens integrated base 12 in the analysis and detection device of the present invention includes an upper mounting plate 121 and a lower mounting plate 122 which are vertically disposed, the upper mounting plate 121 and the lower mounting plate 122 are fixedly connected by bolts, a through hole 13 is processed on the upper mounting plate 121, a focusing lens mounting hole 15 and a plurality of light collecting lens mounting holes 14 are processed on the lower mounting plate 122, the through hole 13 and the focusing lens mounting hole 15 are coaxially disposed, and the axes of the light collecting lens mounting holes 14 are obliquely disposed and gradually converge toward the axis of the focusing lens mounting hole 15 along the direction from top to bottom; the plurality of light receiving lens mounting holes 14 are uniformly arranged around the focusing lens mounting hole 15 along the circumferential direction; the top of the upper mounting plate 121 is provided with a connecting plate 123, and the connecting plate 123 is fixedly connected with the housing 1.
As shown in fig. 3, the focusing lens 7 is mounted in the focusing lens mounting hole 15, the light collecting lens 11 is mounted in each light collecting lens mounting hole 14, and the number of the light collecting lenses 11 is four.
In order to facilitate taking and placing samples, a door capable of being closed and opened is arranged on the side wall of the shell 1.
In addition, still be equipped with the power in the casing 1, piezoelectric platform 2, multichannel spectrum appearance 4, camera 5, laser generator 6 and industry panel computer 8 all are connected with the power electricity.
When the analysis and detection device of the utility model is used: placing a sample target 3 to be tested on the piezoelectric platform 2, starting the industrial tablet personal computer 8, and controlling the piezoelectric platform 2 to move in X, Y, Z three directions through the industrial tablet personal computer 8 to ensure that a certain adjusting distance exists between the laser generator 6 and the surface of the sample target 3, wherein the adjusting distance is determined by actual test conditions, for example, when the target is thicker, the adjusting distance should be larger; when the target material is thinner, the adjusting distance is smaller. And starting the laser generator 6, wherein the laser generator 6 generates a laser beam with the wavelength of 1064nm, the laser beam irradiates the focusing lens 7 through the laser beam passing through the focusing lens 13, the laser beam irradiates the sample target 3 after being focused by the focusing lens 7, and the piezoelectric platform 2 is controlled to move in three directions of X, Y, Z by the industrial tablet personal computer 8, so that the laser focus of the laser beam after being focused by the focusing lens 7 acts on the surface of the sample target 3. Plasma is generated on the surface of the sample target 3 under the irradiation of a laser focus; the multi-channel spectrometer 4 is started, five channels of the multi-channel spectrometer 4 capture plasma optical signals at the same time, and then the horizontal moving frequency of the piezoelectric platform 2 is controlled to be synchronous with the laser emergent frequency through the industrial tablet personal computer 8, so that the positions of the laser acting on the surface of the sample target 3 at each time are different, and the relatively stable plasma can be generated when the laser irradiates on the sample target 3. The multi-channel spectrometer 4 converts the collected plasma optical signals into electrical signals and transmits the electrical signals to the industrial tablet computer 8, and the industrial tablet computer 8 processes the received electrical signals to form plasma spectrum information and displays the plasma spectrum information. And meanwhile, carrying out qualitative and quantitative data analysis on the plasma spectrum information to obtain the basic information of the elements contained in the sample to be detected. The wireless transmission module of the industrial tablet computer 8 can transmit the basic information of the elements contained in the sample to be detected to a remote laboratory in real time, and the data can be exported through the USB interface 9 on the industrial tablet computer 8.
During the detection process, the camera 5 is used for monitoring the position of the sample target 3. The camera 5 converts the shot image signal into a digital signal and transmits the digital signal to the industrial tablet personal computer 8, and the industrial tablet personal computer 8 controls the moving range of the piezoelectric platform 2 to prevent the sample target 3 from moving out of the laser direct irradiation range. The four light receiving lenses 11 are used for reducing laser diffuse reflection and reducing spectral information loss. The respective focal positions of the four light receiving lenses 11 can be manually adjusted through the rotary lens barrel, and can also be finely adjusted through an electric rotating shaft arranged in the lens base of the light receiving lenses, the electric rotating shaft can be connected with an industrial tablet personal computer 8, and the focusing purpose is achieved by changing the focusing positions of the light receiving lenses 11, so that the focal points of the four light receiving lenses 11 and the focusing lens 7 are kept consistent.
The piezoelectric platform 2 adopts a piezoelectric ceramic platform which can be adjusted in X, Y, Z three directions, so that the position of the sample target 3 can be conveniently adjusted.
The multi-channel spectrometer 4 adopts an Alvasis multi-channel spectrometer, the measurement wave bands of the five channels are different, and the five channels are connected through a USB docking station, so that the 200-600nm full-wave band spectrum measurement can be realized.
The industrial tablet computer 8 is a small computer with wireless networking function, and comprises a touch screen and an internal integrated processor, and is used for controlling the operation of the whole device and analyzing and processing the output data of the multi-channel spectrometer 4.
The power can be installed in any position in the casing for supply power for whole device, can adopt the high ternary lithium cell of security, energy density is big.
Claims (3)
1. A portable laser perception spectrum element analysis detection device which is characterized in that: the device comprises a barrel-shaped shell (1), an industrial tablet personal computer (8) is installed at the top of the shell (1), a piezoelectric platform (2) and a multi-channel spectrometer (4) are installed on a bottom plate of the shell (1), a camera (5), a laser generator (6) and a lens integration seat (12) are further installed in the shell (1), a focusing lens (7) and a light collecting lens (11) are installed on the lens integration seat (12), the camera (5) and the multi-channel spectrometer (4) are respectively located on two sides of the piezoelectric platform (2), the laser generator (6) is located above the piezoelectric platform (2), and the lens integration seat (12) is located between the laser generator (6) and the piezoelectric platform (2); the piezoelectric platform (2), the camera (5) and the multi-channel spectrometer (4) are in signal connection with an industrial tablet computer (8).
2. The portable laser sensing spectroscopy elemental analysis detection device of claim 1, wherein: the lens integrated base (12) comprises an upper mounting plate (121), a lower mounting plate (122) and a connecting plate (123), the upper mounting plate (121) and the lower mounting plate (122) are fixedly connected through bolts, through holes (13) are vertically formed in the middle of the upper mounting plate (121), focusing lens mounting holes (15) are formed in the positions, corresponding to the through holes (13), of the lower mounting plate (122), a plurality of light receiving lens mounting holes (14) are formed in the lower mounting plate (122) in an inclined mode, and the light receiving lens mounting holes (14) are circumferentially and uniformly formed around the focusing lens mounting holes (15); the top of the upper mounting plate (121) is provided with a connecting plate (123), and the connecting plate (123) is fixedly connected with the shell (1).
3. The portable laser sensing spectroscopy elemental analysis detection device of claim 1, wherein: still be equipped with the power in casing (1), this power is connected with piezoelectric platform (2), multichannel spectrum appearance (4), camera (5), laser generator (6) and industry panel computer (8) electricity respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123016759.3U CN216411059U (en) | 2021-12-03 | 2021-12-03 | Portable laser perception spectrum element analysis detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123016759.3U CN216411059U (en) | 2021-12-03 | 2021-12-03 | Portable laser perception spectrum element analysis detection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216411059U true CN216411059U (en) | 2022-04-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123016759.3U Active CN216411059U (en) | 2021-12-03 | 2021-12-03 | Portable laser perception spectrum element analysis detection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216411059U (en) |
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2021
- 2021-12-03 CN CN202123016759.3U patent/CN216411059U/en active Active
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