CN118533818A - A handheld laser induced breakdown spectroscopy device - Google Patents

Abstract

The present invention relates to the field of laser detection technology, and discloses a handheld laser induced breakdown spectroscopy device, including a shell, a handle fixedly connected to the bottom of the shell, a touch switch penetrating the left side of the handle, a display fixedly connected to the upper end of the shell, four telescopic rods slidably connected to the right side wall of the shell, the left sides of the four telescopic rods extend to the inside of the shell, and the right sides of the four telescopic rods are fixedly connected to a piezoelectric block. The present invention aligns the detection port of the handheld detector with the surface of the object to be detected, and at the same time, the surface of the object to be detected is automatically scraped from top to bottom through the coordination of the first spring, the first electromagnet and the slide bar, thereby improving the detection accuracy. At the same time, the coordination between the second spring and the piezoelectric block realizes automatic positioning of the surface to be detected, reaches the horizontal correction of the surface to be detected, so that the detection port of the instrument remains parallel to the surface to be detected, and the laser beam is vertically incident on the detection surface, effectively improving the detection accuracy.

Description

A handheld laser induced breakdown spectroscopy device

Technical Field

The invention relates to the technical field of laser detection, in particular to a handheld laser induced breakdown spectroscopy device.

Background Art

Laser induced breakdown spectroscopy is a method of analyzing material composition through the emission spectrum generated by the interaction between laser and material. It is a detection technology that generates plasma by focusing high-energy laser pulses on the surface of the object to be tested, and analyzes and processes the spectral signal of the plasma. It is widely used in the field of metal component detection. The use of laser induced breakdown spectroscopy makes the detection rate fast and the detection results accurate. It is a precision detection instrument.

The existing handheld laser induced breakdown spectroscopy device has the following technical defects when in use: First, when the detection probe is in contact with the object to be measured, when impurities are attached to the object to be measured, especially certain toxic substances cannot be manually removed, resulting in a certain error in the detection data, and therefore, it is impossible to obtain accurate detection results; second, when the surface of the object to be measured is an inclined surface, the laser beam is obliquely incident on the surface of the object, so that the spectral signal reflected by the detection has a certain oblique angle with the receiving device, resulting in a certain error in the detection result, which needs to be solved.

Summary of the invention

In view of the shortcomings of the existing handheld laser induced breakdown spectroscopy device mentioned in the background technology during use, the present invention provides a handheld laser induced breakdown spectroscopy device, which has the advantages of effectively removing debris from the detection surface and high accuracy of detection results, thereby solving the technical problems raised in the above background technology.

The present invention provides the following technical solution: a handheld laser induced breakdown spectroscopy device, comprising a shell, a handle is fixedly connected to the bottom of the shell, a touch switch is penetrated on the left side of the handle, a display screen is fixedly connected to the upper end of the shell, four telescopic rods are slidably connected to the right side wall of the shell, the left sides of the four telescopic rods extend to the inside of the shell, the right sides of the four telescopic rods are fixedly connected to piezoelectric blocks, the other ends of the piezoelectric blocks are fixedly connected to positioning blocks, a support sleeve is fixedly connected between the adjacent upper and lower sides of the positioning block, a sliding rod is fixedly connected between the front and rear sides of the positioning block, a scraping mechanism is arranged inside the support sleeve, a positioning mechanism is arranged on the left sides of the four telescopic rods and extends to the inside of the shell, and an angle adjustment mechanism is arranged inside the shell;

The angle adjustment mechanism includes a limit sleeve fixedly connected to the inner side wall of the shell, a spherical connecting seat is rotatably sleeved inside the right side of the limit sleeve, a connecting column is fixedly connected to the right side of the spherical connecting seat, a laser is fixedly connected to the right side of the connecting column, a third electromagnet is fixedly connected to the right side wall of the limit sleeve, and a permanent magnet is fixedly connected to the side wall of the spherical connecting seat.

Preferably, the scraping mechanism comprises a slide groove provided on the inner side wall of the support sleeve, a slide rod is arranged in the lateral direction inside the slide groove, and a scraper is fixedly sleeved on the outer side of the slide rod;

The scraping mechanism also includes a first spring fixedly connected to the lower bottom walls at the left and right ends of the slide rod, the bottom of the first spring is fixedly connected to a first electromagnet, and the first electromagnet is fixedly connected to the inner bottom of the support sleeve.

Preferably, the positioning mechanism includes a second spring fixedly connected to the other end of the telescopic rod, the other end of the second spring is fixedly connected to a second electromagnet, and the other end of the second electromagnet is fixedly connected to the slide rail of the housing.

Preferably, the telescopic rod is made of a magnetic material, and its magnetism is the same as that of the second electromagnet.

Preferably, the permanent magnet and the third electromagnet have opposite magnetic properties.

Preferably, the slide bar is made of a magnetic material, and its magnetism is opposite to that of the first electromagnet.

Preferably, four permanent magnets are arranged at equal intervals along the circumference of the spherical connecting seat, and four third electromagnets are arranged at equal intervals along the circumference of the left side wall of the limiting sleeve.

Preferably, the positioning block and the scraper are both made of elastic material.

Preferably, the thickness of the positioning block is consistent with the thickness of the scraper.

The present invention has the following beneficial effects:

1. The present invention aims the detection port of the handheld detector at the surface of the object to be detected, squeezes and contacts the object to be detected through the right wall of the positioning block, and scrapes away the debris on the surface of the object to be detected through the touch switch. At the same time, the surface of the object to be detected is automatically scraped from top to bottom through the coordinated arrangement of the first spring, the first electromagnet and the slide rod, thereby reducing the debris attached to the surface of the detected object, reducing errors and improving the detection accuracy.

2. The present invention realizes horizontal correction of the object to be measured by precise contact between the side wall of the positioning block and the surface to be measured, and simultaneously realizes automatic positioning of the surface to be measured by the coordinated arrangement of the second spring, the second electromagnet and the piezoelectric block, thereby achieving horizontal correction of the surface to be measured, so that the detection port of the instrument remains parallel to the surface to be measured, and the laser beam is vertically incident on the detection surface, which effectively improves the detection accuracy.

3. The present invention realizes the measurement of the inclination angle of the detection surface through the current recorded by each piezoelectric block after the positioning is completed. At the same time, through the coordination between the third electromagnet, the permanent magnet and the spherical connector, the laser beam emitted by the laser is vertically shot into the surface to be measured, thereby maximizing the reflection of the reflected spectrum signal to the receiving screen, which significantly improves the accuracy of the detection result.

4. The present invention measures the inclination angle of the surface to be measured and timely adjusts the incident angle of the laser according to the different inclination angles of the surface to be measured. The two cooperate with each other through the value of the piezoelectric current and the current flowing through the third electromagnet to jointly adjust the incident inclination angle of the laser. The angle adjustment has extremely high precision, which further improves the detection accuracy.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG1 is a schematic diagram of a three-dimensional structure of the present invention;

FIG2 is a partial cross-sectional structural schematic diagram of the present invention;

FIG3 is an enlarged schematic diagram of the structure at A in FIG2 of the present invention;

FIG4 is a schematic diagram of the side structure of the present invention;

FIG5 is a schematic diagram of the three-dimensional structure of the angle deflection mechanism of the present invention;

FIG. 6 is a schematic diagram of the three-dimensional structure of the scraping mechanism of the present invention.

In the figure: 1. shell; 2. hand grip; 3. touch switch; 4. display screen; 5. support sleeve; 51. first spring; 52. first electromagnet; 53. slide groove; 6. positioning block; 61. piezoelectric block; 7. scraper; 8. slide rod; 9. telescopic rod; 91. second spring; 92. second electromagnet; 10. laser; 11. connecting column; 12. spherical connecting seat; 13. limit sleeve; 14. permanent magnet; 15. third electromagnet.

DETAILED DESCRIPTION

The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

Please refer to Figures 1-6, a handheld laser induced breakdown spectroscopy device includes a shell 1, a handle 2 is fixedly connected to the bottom of the shell 1, a touch switch 3 is penetrated on the left side of the handle 2, a display screen 4 is fixedly connected to the upper end of the shell 1, four telescopic rods 9 are slidably connected to the right side wall of the shell 1, the left sides of the four telescopic rods 9 extend to the inside of the shell 1, the right sides of the four telescopic rods 9 are all fixedly connected to piezoelectric blocks 61, the other end of the piezoelectric block 61 is fixedly connected to a positioning block 6, a support sleeve 5 is fixedly connected between the adjacent upper and lower sides of the positioning block 6, a sliding rod 8 is fixedly connected between the front and rear sides of the positioning block 6, a scraping mechanism is provided inside the support sleeve 5, a positioning mechanism is provided on the left side of the four telescopic rods 9 and extends to the inside of the shell 1, and an angle adjustment mechanism is provided inside the shell 1;

The angle adjustment mechanism includes a limit sleeve 13 fixedly connected to the inner side wall of the shell 1, a spherical connecting seat 12 is rotatably sleeved inside the right side of the limit sleeve 13, a connecting column 11 is fixedly connected to the right side of the spherical connecting seat 12, a laser 10 is fixedly connected to the right side of the connecting column 11, a third electromagnet 15 is fixedly connected to the right side wall of the limit sleeve 13, and a permanent magnet 14 is fixedly connected to the side wall of the spherical connecting seat 12. The pressure generated by the positioning block 6 and the object to be tested during the positioning process is transmitted to the piezoelectric block 61, and the piezoelectric currents of the four groups of piezoelectric blocks 61 are recorded one by one. When the four groups of currents are different, the surface to be tested has an inclination angle at this time. At this time, the current size generated by the four groups of piezoelectric blocks 61 is transmitted to the third electromagnet 15. When the piezoelectric current is larger, it indicates that the corresponding side of the surface to be tested has an inclination angle, and the current flowing through the third electromagnet 15 in the corresponding area is synchronously increased, so that the permanent magnet 14 on the corresponding side moves toward the third electromagnet 15 under the action of magnetic attraction, so that the spherical connector 12 rotates along the inside of the limit sleeve 13, and then the laser 10 and the connecting column 11 are deflected, so that the deflection is perpendicular to the inclined surface to be tested, so that the light beam emitted by the laser 10 is vertically projected on the detection surface, so that the spectrum signal can be amplified and the detection accuracy is improved. After the calibration is completed, the laser 10 is turned on to start detecting the surface of the object to be tested. By measuring the inclination angle of the surface to be measured, the incident angle of the laser 10 can be adjusted in time according to the different inclination angles of the surface to be measured. The two cooperate with each other through the value of the piezoelectric current and the current flowing through the third electromagnet 15 to jointly adjust the incident inclination angle of the laser 10. The angle adjustment has extremely high precision, which further improves the detection accuracy.

The scraping mechanism includes a slide groove 53 provided on the inner wall of the support sleeve 5, a slide rod 8 is arranged in the lateral direction inside the slide groove 53, and a scraper 7 is fixedly sleeved on the outer side of the slide rod 8;

The scraping mechanism also includes a first spring 51 fixedly connected to the lower bottom wall at the left and right ends of the slide bar 8, and the bottom of the first spring 51 is fixedly connected to the first electromagnet 52, and the first electromagnet 52 is fixedly connected to the inner bottom of the support sleeve 5. When the first electromagnet 52 is turned on, the first spring 51 is compressed under the action of magnetic attraction, and then the slide bar 8 is pulled, so that the slide bar 8 moves downward along the inside of the support sleeve 5, and then the scraper 7 is driven to move downward, and the scraper 7 is moved to scrape the attached debris on the surface to be tested. After the scraping is completed, the first electromagnet 52 is disconnected, so that the slide bar 8 is reset. After the reset is completed, if there is no debris on the surface detected at this time, the above-mentioned scraping operation is repeated until the debris is removed. The detection port of the handheld detector is aligned with the surface of the object to be detected, and the right side wall of the positioning block 6 is squeezed into contact with the object to be detected. The touch switch 3 is used to scrape away the debris on the surface of the object to be detected. At the same time, the first spring 51, the first electromagnet 52 and the slide rod 8 are coordinated to realize automatic scraping from top to bottom on the surface of the object to be detected, thereby reducing the debris attached to the surface of the detected object, reducing errors and improving the detection accuracy.

The positioning mechanism includes a second spring 91 fixedly connected to the other end of the telescopic rod 9, the other end of the second spring 91 is fixedly connected to a second electromagnet 92, and the other end of the second electromagnet 92 is fixedly connected to the slide rail of the housing 1. At the beginning of the detection, the housing 1 of the handheld detector brings the detection port close to the object to be detected, and then squeezes the touch switch 3 to turn on the second electromagnet 92. Under the action of the repulsive force of the magnet, the telescopic rod 9 moves, and then the second spring 91 is extended. The movement of the telescopic rod 9 drives the positioning block 6 to move synchronously, and finally the side wall of the positioning block 6 is in close contact with the surface to be detected. The horizontal correction of the object to be detected is achieved through the precise contact between the side wall of the positioning block 6 and the surface to be detected. At the same time, the automatic positioning of the surface to be detected is achieved through the coordination between the second spring 91, the second electromagnet 92, and the piezoelectric block 61, and then the horizontal correction of the surface to be detected is achieved, so that the detection port of the instrument is parallel to the surface to be detected, so that the laser beam is vertically shot into the detection surface, which effectively improves the detection accuracy.

The telescopic rod 9 is made of magnetic material, and its magnetism is the same as that of the second electromagnet 92. Under the repulsive force of the magnet, the telescopic rod 9 moves, thereby extending the second spring 91, and the movement of the telescopic rod 9 drives the positioning block 6 to move synchronously.

The permanent magnet 14 and the third electromagnet 15 have opposite magnetic properties, so that the permanent magnet 14 on the corresponding side moves toward the third electromagnet 15 under the action of magnetic attraction, so that the spherical connecting seat 12 rotates along the inside of the limiting sleeve 13 .

The slide bar 8 is made of magnetic material, and its magnetism is opposite to that of the first electromagnet 52. Under the action of the magnetic attraction, the first spring 51 is compressed, and then the slide bar 8 is pulled, so that the slide bar 8 moves downward along the inside of the support sleeve 5.

Four permanent magnets 14 are arranged at equal intervals along the circumference of the spherical connector 12, and four third electromagnets 15 are arranged at equal intervals along the circumference of the left side wall of the limiting sleeve 13. The four sets of third electromagnets 15 and permanent magnets 14 make the current values generated by each piezoelectric block 61 correspond one to one.

The positioning block 6 and the scraper 7 are both made of elastic material, which reduces the contact and collision between the positioning block 6 and the scraper 7 and the surface to be measured, buffers the impact force, and reduces damage to the instrument.

The thickness of the positioning block 6 is consistent with the thickness of the scraper 7. After the positioning block 6 is positioned, the scraper 7 scrapes away the debris, and the two work independently without affecting each other.

The method of use (working principle) of the present invention is as follows:

At the beginning of the test, the handheld detector housing 1 is brought close to the test port of the object to be tested, and then the touch switch 3 is squeezed to turn on the second electromagnet 92. Under the repulsive force of the magnet, the telescopic rod 9 moves, and then the second spring 91 is extended. The movement of the telescopic rod 9 drives the positioning block 6 to move synchronously, and finally the side wall of the positioning block 6 is in close contact with the surface to be tested.

After the positioning is completed, the first electromagnet 52 is turned on, and the first spring 51 is compressed under the action of the magnetic attraction, thereby pulling the slide bar 8, so that the slide bar 8 moves downward along the inside of the support sleeve 5, and then drives the scraper 7 to move downward. The scraper 7 is moved downward to scrape the debris attached to the surface to be tested. After the scraping is completed, the first electromagnet 52 is disconnected to reset the slide bar 8. After the reset is completed, if there is no debris on the surface at this time, the above-mentioned scraping operation is repeated until the debris is removed.

The pressure generated by the positioning block 6 and the object to be tested during the positioning process is transmitted to the piezoelectric block 61, and the piezoelectric currents of the four groups of piezoelectric blocks 61 are recorded one by one. When the four groups of currents are different, the surface to be tested has an inclination angle at this time. At this time, the current size generated by the four groups of piezoelectric blocks 61 is transmitted to the third electromagnet 15. When the piezoelectric current is larger, it indicates that the corresponding side of the surface to be tested has an inclination angle, and the current flowing through the third electromagnet 15 in the corresponding area is synchronously increased, so that the permanent magnet 14 on the corresponding side moves toward the third electromagnet 15 under the action of magnetic attraction, so that the spherical connector 12 rotates along the inside of the limit sleeve 13, and then the laser 10 and the connecting column 11 are deflected, so that the deflection is perpendicular to the inclined surface to be tested, so that the light beam emitted by the laser 10 is vertically projected on the detection surface, so that the spectrum signal can be amplified and the detection accuracy is improved. After the calibration is completed, the laser 10 is turned on to start detecting the surface of the object to be tested.

It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims (9)

1. A handheld laser induced breakdown spectroscopy device, comprising a shell (1), characterized in that: a handle (2) is fixedly connected to the bottom of the shell (1), a touch switch (3) is provided on the left side of the handle (2), a display screen (4) is fixedly connected to the upper end of the shell (1), four telescopic rods (9) are slidably connected to the right side wall of the shell (1), the left sides of the four telescopic rods (9) extend into the interior of the shell (1), the right sides of the four telescopic rods (9) are fixedly connected to piezoelectric blocks (61), the other ends of the piezoelectric blocks (61) are fixedly connected to positioning blocks (6), a support sleeve (5) is fixedly connected between the adjacent upper and lower sides of the positioning block (6), a sliding rod (8) is fixedly connected between the front and rear sides of the positioning block (6), a scraping mechanism is provided inside the support sleeve (5), a positioning mechanism is provided on the left sides of the four telescopic rods (9) and extends into the interior of the shell (1), and an angle adjustment mechanism is provided inside the shell (1); The angle adjustment mechanism comprises a limit sleeve (13) fixedly connected to the inner side wall of the housing (1); a spherical connection seat (12) is rotatably sleeved inside the right side of the limit sleeve (13); a connection column (11) is fixedly connected to the right side of the spherical connection seat (12); a laser (10) is fixedly connected to the right side of the connection column (11); a third electromagnet (15) is fixedly connected to the right side wall of the limit sleeve (13); and a permanent magnet (14) is fixedly connected to the side wall of the spherical connection seat (12). 2. A handheld laser induced breakdown spectroscopy device according to claim 1, characterized in that: the scraping mechanism comprises a slide groove (53) provided on the inner side wall of the support sleeve (5), a slide rod (8) is arranged in the lateral direction inside the slide groove (53), and a scraper (7) is fixedly sleeved on the outer side of the slide rod (8); The scraping mechanism further comprises a first spring (51) fixedly connected to the lower bottom walls at the left and right ends of the slide rod (8), the bottom of the first spring (51) being fixedly connected to a first electromagnet (52), and the first electromagnet (52) being fixedly connected to the inner bottom of the support sleeve (5). 3. A handheld laser induced breakdown spectroscopy device according to claim 1, characterized in that the positioning mechanism comprises a second spring (91) fixedly connected to the other end of the telescopic rod (9), the other end of the second spring (91) is fixedly connected to a second electromagnet (92), and the other end of the second electromagnet (92) is fixedly connected to the slide rail of the housing (1). 4. A handheld laser induced breakdown spectroscopy device according to claim 1, characterized in that: the telescopic rod (9) is made of a magnetic material, and its magnetism is the same as that of the second electromagnet (92). 5. The handheld laser induced breakdown spectroscopy device according to claim 1, characterized in that the permanent magnet (14) and the third electromagnet (15) have opposite magnetic properties. 6. A handheld laser induced breakdown spectroscopy device according to claim 2, characterized in that: the sliding rod (8) is made of a magnetic material, and its magnetism is opposite to that of the first electromagnet (52). 7. A handheld laser induced breakdown spectroscopy device according to claim 1, characterized in that: four permanent magnets (14) are arranged at equal intervals along the circumference of the spherical connecting seat (12), and four third electromagnets (15) are arranged at equal intervals along the circumference of the left side wall of the limiting sleeve (13). 8. A handheld laser induced breakdown spectroscopy device according to claim 2, characterized in that: the positioning block (6) and the scraper (7) are both made of elastic material. 9. A handheld laser induced breakdown spectroscopy device according to claim 2, characterized in that the thickness of the positioning block (6) is consistent with the thickness of the scraper (7).