CN218122242U - 3D scanning device for ozone laser radar and corresponding ozone laser radar - Google Patents
3D scanning device for ozone laser radar and corresponding ozone laser radar Download PDFInfo
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- CN218122242U CN218122242U CN202222496490.1U CN202222496490U CN218122242U CN 218122242 U CN218122242 U CN 218122242U CN 202222496490 U CN202222496490 U CN 202222496490U CN 218122242 U CN218122242 U CN 218122242U
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Abstract
A3D scanning device and corresponding ozone laser radar for ozone laser radar belongs to environmental protection monitoring facilities technical field. The 3D scanning device comprises a scanning unit, a supporting and connecting unit, a horizontal rotating unit, a vertical rotating unit and a power supply. Ozone laser radar includes 3D scanning device, station room and ozone laser radar body, and 3D scanning device installs at station roof portion, and the ozone laser radar body is installed inside the station room, and 3D scanning device and ozone laser radar body pass through the sealed section of thick bamboo of light path and connect. The 3D scanning device can realize 0-360 degree rotation in the horizontal plane and 0-360 degree rotation in the vertical direction, so that the ozone laser radar can realize a plurality of scanning modes such as a vertical fixed point, a vertical section, a horizontal section and the like; the reflector bracket and the supporting mechanism form a stable triangular structure, so that the supporting mechanism is more stable; the rotation in the horizontal direction is more stable and does not deviate to the vertical axis direction; the reflected light direction can be changed to avoid interference.
Description
Technical Field
The utility model belongs to the technical field of the environmental protection monitoring facilities, a 3D scanning device for ozone laser radar is related to and corresponding ozone laser radar.
Background
Ozone pollution is attracting more and more attention as one of environmental pollution, and corresponding monitoring equipment is required to monitor ozone in air. Ozone laser radar uses the difference to absorb the laser radar principle, sends the pulse laser that multiunit wavelength is close through high energy ultraviolet laser, and laser passes through the beam expander and launches in the atmosphere and takes place the interact with ozone, aerosol etc. and the backscattering light is received by the telescope, obtains the echo signal of each wavelength, and the concentration of ozone in the atmosphere is worked out by difference absorption laser radar algorithm reversal, can be widely used in ozone monitoring.
Chinese utility model patent with publication number CN215219167U discloses a horizontal scanning device for ozone laser radar, and corresponding ozone laser radar. The horizontal scanning device can horizontally rotate by 0-360 degrees and can scan the ozone concentration distribution of a horizontal section in real time; the vertical direction is adjustable at 0-30 degrees, and the shielding of surrounding buildings during horizontal section scanning can be effectively avoided. However, the scanning device cannot realize the rotation of 0-360 degrees in the vertical direction, and cannot meet the requirements of some application scenarios.
Chinese utility model patent CN206419431U discloses a transmission device and a laser three-dimensional scanning head system. The three-dimensional scanning head system has the following defects: when the optical window rotates in the horizontal direction, the optical window is easy to deviate in the vertical axis direction, and reflected light is easy to interfere measurement when the optical window is horizontally arranged.
Disclosure of Invention
The utility model aims at providing a 3D scanning device and corresponding ozone laser radar for ozone laser radar, this 3D scanning device can realize 0-360 degrees rotations and vertical direction 0-360 degrees rotations in the horizontal plane to make ozone laser radar can realize multiple scanning mode such as vertical fixed point, vertical tangent plane, horizontal tangent plane. The purpose of the utility model is realized through the following technical scheme.
The 3D scanning device for the ozone laser radar comprises a scanning unit, a supporting and connecting unit, a horizontal rotating unit, a vertical rotating unit and a power supply; the scanning unit comprises a scanning head and an optical window thereof, a first reflector bracket, a second reflector and a second reflector bracket, wherein the two reflectors form a periscope structure (namely the two reflectors are parallel to each other and form an included angle of 45 degrees with incident light); the supporting and connecting unit comprises a scanning device shell, a supporting mechanism and a light path sealing transition ring; the horizontal rotating unit comprises a horizontal shaft driving motor, a horizontal coupling, a horizontal shaft worm, a horizontal turbine, a horizontal transmission cylinder and a horizontal rotating bearing, and the horizontal turbine is arranged in the horizontal rotating bearing; the vertical rotating unit comprises a vertical shaft driving motor, a vertical coupling, a vertical worm, a vertical turbine, a vertical transmission cylinder, a vertical transmission bearing, a first bevel gear, a second bevel gear, a vertical rotating cylinder and a vertical rotating bearing, wherein the vertical transmission cylinder is installed inside the vertical transmission bearing, and the vertical rotating cylinder is installed inside the vertical rotating bearing.
The 3D scanning device vertical direction rotation implementation process is as follows: and a power supply is switched on to drive a vertical shaft driving motor to drive a vertical shaft coupler, the vertical shaft coupler drives a vertical worm to rotate, the vertical worm drives a vertical driving cylinder inside a vertical driving bearing to rotate, the vertical driving cylinder drives a first bevel gear to rotate, the first bevel gear drives a second bevel gear to rotate, and the second bevel gear drives a vertical rotating cylinder to rotate. The vertical shaft drives the motor to rotate, so as to drive the whole scanning head to rotate integrally in the vertical direction, and the scanning device can rotate in the vertical direction by 0-360 degrees.
The 3D scanning device vertical direction rotation implementation process is as follows: and a power supply is started to drive a horizontal shaft driving motor to drive a horizontal shaft coupling to rotate, the horizontal shaft coupling drives a horizontal shaft worm to rotate, and a horizontal turbine rotates along with the horizontal shaft worm. Because the horizontal turbine is arranged in the horizontal rotating bearing, the horizontal shaft drives the motor to rotate, and drives the scanning head in the horizontal direction to integrally rotate, and the scanning device can rotate 0-360 degrees in the horizontal direction. The utility model discloses scanning device below is all arranged in to vertical axis driving motor and horizontal axis driving motor, and vertical axis drive mechanism is inside horizontal axis drive mechanism, and the vertical axis can rotate thereupon when the horizontal direction rotates. In order to ensure that the vertical shaft does not rotate when the horizontal shaft is rotated, the vertical shaft driving motor also needs to rotate when the horizontal shaft driving motor rotates to compensate the vertical rotation angle, so that the vertical shaft is kept unchanged.
Furthermore, the supporting mechanism comprises a horizontal bottom plate and a first vertical bottom plate which is vertical to the horizontal bottom plate, and the first reflector bracket is used as a reinforced supporting frame; the supporting mechanism further comprises a window bottom plate and a second vertical bottom plate perpendicular to the window bottom plate, and the second reflector bracket is used as a reinforcing supporting frame. The positions of the reflector bracket and the supporting mechanism are skillfully arranged, so that the reflector bracket and the supporting mechanism form a stable triangular structure, and the supporting mechanism is more stable.
Furthermore, the balancing weight is arranged on the horizontal bottom plate, so that the rotation in the horizontal direction is more stable, and the shifting to the vertical axis direction is avoided.
Furthermore, the optical window and the horizontal plane form an included angle of less than 10 degrees, and the direction of reflected light can be changed by obliquely installing the optical window, so that interference is avoided.
Ozone laser radar, including foretell 3D scanning device, station room and ozone laser radar body, 3D scanning device installs at station roof portion, and ozone laser radar body is installed inside the station room, and 3D scanning device and ozone laser radar body pass through the sealed section of thick bamboo of light path and connect.
Further, the ozone laser radar body comprises a laser, a Raman tube, a beam expander, a telescope, a spectrometer, a detector, a data acquisition card and an industrial personal computer.
Laser is emitted from the laser, laser with three wavelengths is excited by the Raman tube and expanded by the beam expanding lens, and after the laser is emitted and reflected by the two reflectors, the laser is emitted into the atmosphere from the optical window of the 3D scanning device. Atmospheric aerosol reflected light signals enter from an optical window of the 3D scanning device, enter a telescope for focusing after being reflected by two reflectors, are transmitted into a spectrograph through optical fibers, enter a 3-path detector after being split by the spectrograph, are converted into electric signals, are transmitted into a data acquisition card through electric wires for acquisition, and are read by an industrial personal computer and the ozone concentration is calculated through an ozone radar algorithm.
Based on the utility model discloses a 3D scanning device, ozone laser radar can realize multiple scanning detection mode:
1) Vertical pointing mode: the vertical 90 degrees are arranged, the horizontal direction is fixed, the vertical fixed-point detection can be realized, and the height distribution of the ozone concentration in the atmosphere can be detected in real time.
2) Vertical section mode: the horizontal direction is set at a certain angle of 0-360 degrees, and the vertical direction is set at 0-360 degrees for rotation, so that the ozone concentration distribution of the vertical section can be scanned in real time.
3) Horizontal section mode: the horizontal rotation is 0-360 degrees, a certain elevation angle can be arranged in the vertical direction, the ozone concentration distribution of a horizontal section can be scanned in real time, and obstacles in the horizontal direction can be avoided by arranging the elevation angle.
The utility model discloses following beneficial technological effect has: the 3D scanning device can realize 0-360 degree rotation in the horizontal plane and 0-360 degree rotation in the vertical direction, so that the ozone laser radar can realize a plurality of scanning modes such as a vertical fixed point, a vertical tangent plane, a horizontal tangent plane and the like. The reflector bracket and the supporting mechanism form a stable triangular structure, so that the supporting mechanism is more stable. The rotation in the horizontal direction is more stable and does not deviate towards the vertical axis direction. The reflected light direction is changed to avoid interference.
Drawings
Fig. 1 is a cross-sectional view of the 3D scanning device of the present invention.
Fig. 2 is a schematic structural diagram of the scanning device with the outer shell removed.
Fig. 3 is a schematic view of the scanning device in another direction with the housing removed.
Fig. 4 is a schematic diagram of optical signal emission.
Fig. 5 is a schematic diagram of optical signal reception.
Reference numerals:
1. horizontal turbine, 2, horizontal transmission cylinder, 3, horizontal rotation bearing, 4, scanning head base plate, 5, horizontal base plate, 6, vertical turbine, 7, vertical transmission bearing, 8, vertical transmission cylinder, 9, first bevel gear, 10, second bevel gear, 11, vertical rotation bearing, 12, vertical rotation cylinder, 13, first reflector, 14, second reflector, 15, scanning head and optical window thereof, 16, power supply housing, 17, sealing housing, 18, horizontal housing, 19, vertical housing, 20, optical path sealing transition ring, 21, vertical shaft driving motor, 22, vertical shaft coupling, 23, vertical shaft worm, 24, horizontal shaft driving motor, 25, horizontal coupling, 26, horizontal shaft worm, 27, balancing weight, 28, first reflector bracket, 29, first vertical base plate, 30, second vertical base plate, 31, second reflector bracket, 32, window base plate.
Detailed Description
The technical solution of the present invention is clearly and completely described below with reference to the drawings. It is to be understood that the disclosed embodiments are merely exemplary of the invention, and are not intended to limit the invention to the precise embodiments disclosed. Based on the embodiments of the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are used merely for convenience of description and for simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or quantity or location.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected" and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
Example 1
The 3D scanning device for the ozone laser radar comprises a scanning unit, a supporting and connecting unit, a horizontal rotating unit, a vertical rotating unit and a power supply, as shown in figures 1 to 3. The scanning unit comprises a scanning head and an optical window 15 thereof, a first reflector 13, a first reflector bracket 28, a second reflector 14 and a second reflector bracket 31, wherein the two reflectors form a periscope structure. The supporting and connecting unit comprises a scanning device shell, a supporting mechanism and an optical path sealing transition ring 20; the shell of the scanning device comprises a scanning head base plate 4, a power supply shell 16, a sealing shell 17, a horizontal shell 18 and a vertical shell 19; the supporting mechanism comprises a horizontal bottom plate 5 and a first vertical bottom plate 29 vertical to the horizontal bottom plate 5, and a first reflector bracket 28 is used as a reinforced supporting frame; the supporting mechanism further comprises a window bottom plate 32 and a second vertical bottom plate 30 perpendicular to the window bottom plate 32, and the second reflector bracket 31 is used as a reinforcing supporting frame; the reflector bracket and the supporting mechanism form a stable triangular structure, so that the supporting mechanism is more stable.
The horizontal rotation unit comprises a horizontal shaft driving motor 24, a horizontal coupler 25, a horizontal shaft worm 26, a horizontal turbine 1, a horizontal transmission cylinder 2 and a horizontal rotation bearing 3, wherein the horizontal turbine 1 is installed inside the horizontal rotation bearing 3. The vertical rotation unit comprises a vertical shaft driving motor 21, a vertical coupling 22, a vertical worm 23, a vertical turbine 6, a vertical transmission cylinder 8, a vertical transmission bearing 7, a first bevel gear 9, a second bevel gear 10, a vertical rotation cylinder 12 and a vertical rotation bearing 11, wherein the vertical transmission cylinder 8 is installed inside the vertical transmission bearing 7, and the vertical rotation cylinder 12 is installed inside the vertical rotation bearing 11.
The balancing weight 27 is arranged on the horizontal bottom plate 5, so that the rotation in the horizontal direction is more stable, and the shifting to the vertical axis direction is avoided. The optical window and the horizontal plane have an included angle of less than 10 degrees, and the direction of reflected light can be changed by obliquely installing the optical window, so that the reflected light cannot enter an optical system.
The 3D scanning device vertical direction rotation realization process is as follows: the power supply is turned on to drive the vertical shaft driving motor 21 to drive the vertical shaft coupling 22, the vertical shaft coupling 22 drives the vertical worm 23 to rotate, the vertical worm 23 drives the vertical worm wheel 6 to rotate, the vertical worm wheel 6 drives the vertical transmission cylinder 8 inside the vertical transmission bearing 7 to rotate, the vertical transmission cylinder 8 drives the first bevel gear 9 to rotate, the first bevel gear 9 drives the second bevel gear 10 to rotate, and the second bevel gear 10 drives the vertical rotation cylinder 12 to rotate. Because the vertical rotating cylinder 12 is arranged in the vertical rotating bearing 11, the vertical shaft driving motor 21 rotates to drive the whole scanning head in the vertical direction to rotate integrally, and the scanning device rotates 0-360 degrees in the vertical direction.
The 3D scanning device vertical direction rotation realization process is as follows: and starting a power supply to drive a horizontal shaft driving motor 24 to drive a horizontal shaft coupling 25 to rotate, wherein the horizontal shaft coupling 25 drives a horizontal shaft worm 26 to rotate, and the horizontal turbine 1 and the horizontal transmission cylinder 2 rotate along with the horizontal shaft worm 26. Because the horizontal turbine 1 is installed inside the horizontal rotating bearing 3, the horizontal rotating bearing 3 is fixed in the middle of the scanning head bottom plate 4, and the horizontal turbine 1 rotates to correspondingly drive the horizontal bottom plate 5 to rotate, the horizontal shaft driving motor 24 rotates to drive the horizontal scanning head to integrally rotate, and the scanning device rotates in the horizontal direction by 0-360 degrees. In order to ensure that the vertical direction does not rotate when the horizontal direction rotates, the vertical driving motor 21 also needs to rotate when the horizontal axis driving motor 24 rotates to compensate the vertical rotation angle, thereby keeping the vertical axis unchanged.
The optical signal transmission process is shown in fig. 4. The laser light is emitted upward from a point a in fig. 4, passes through a point b of the first reflecting mirror 13, is reflected to a point c of the second reflecting mirror 14, is reflected outward, and is emitted into the atmosphere through a point d of the optical window 15. Because the angle installation of the two reflectors is 45 degrees, the laser reflection angle is 45 degrees, a 90-degree reflection angle is formed, and the laser can be emitted from the point a to the atmosphere from the point d.
The optical signal receiving process is shown in fig. 5. The backscattering signal of the laser in the atmosphere enters the scanning head through a point d of the optical window 15, and the optical signal passes through a point c of the second reflecting mirror 14, is reflected to a point b of the first reflecting mirror 13, and is reflected downwards to a point a of the radar receiving telescope to form a signal receiving loop.
Example 2
Ozone laser radar, including embodiment 1's 3D scanning device, station room and ozone laser radar body, 3D scanning device installs at station roof portion, and the ozone laser radar body is installed inside the station room, and 3D scanning device and ozone laser radar body pass through the sealed section of thick bamboo of light path and connect. The ozone laser radar body comprises a laser, a Raman tube, a beam expanding lens, a telescope, a spectrometer, a detector, a data acquisition card and an industrial personal computer.
Laser is emitted from the laser, laser with three wavelengths is excited by the Raman tube and expanded by the beam expanding lens, and after the laser is emitted and reflected by the two reflectors, the laser is emitted into the atmosphere from the optical window of the 3D scanning device. Atmospheric aerosol reflected light signals enter from an optical window of the 3D scanning device, enter a telescope for focusing after being reflected by two reflectors, and enter a spectrometer through optical fibers, the atmospheric aerosol reflected light signals are split by the spectrometer and then enter a 3-path detector to be converted into electric signals, the electric signals are transmitted to a data acquisition card through wires for acquisition, and an industrial control computer reads the data and calculates the ozone concentration through an ozone radar algorithm.
Ozone lidar can realize multiple scanning detection modes:
1) Vertical pointing mode: the vertical 90 degrees are arranged, the horizontal direction is fixed, the vertical fixed-point detection can be realized, and the height distribution of the ozone concentration in the atmosphere can be detected in real time.
2) Vertical section mode: the horizontal direction is set at a certain angle of 0-360 degrees, and the vertical direction is set at 0-360 degrees for rotation, so that the ozone concentration distribution of the vertical section can be scanned in real time.
3) Horizontal section mode: the horizontal rotation is set to be 0-360 degrees, a certain elevation angle can be set in the vertical direction, the ozone concentration distribution of a horizontal section can be scanned in real time, and horizontal obstacles can be avoided by setting the elevation angle.
Although embodiments of the present invention have been shown and described, it is to be understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that changes, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art without departing from the principles and spirit of the present invention. The protection scope of the present invention is defined by the claims and their equivalents.
Claims (6)
1. The 3D scanning device for the ozone laser radar is characterized by comprising a scanning unit, a supporting and connecting unit, a horizontal rotating unit, a vertical rotating unit and a power supply; the scanning unit comprises a scanning head and an optical window thereof, a first reflector bracket, a second reflector and a second reflector bracket, wherein the reflectors on the two sides form a periscope structure; the supporting and connecting unit comprises a scanning device shell, a supporting mechanism and a light path sealing transition ring; the horizontal rotating unit comprises a horizontal shaft driving motor, a horizontal coupling, a horizontal shaft worm, a horizontal turbine, a horizontal transmission cylinder and a horizontal rotating bearing, wherein the horizontal turbine is arranged in the horizontal rotating bearing; the vertical rotating unit comprises a vertical shaft driving motor, a vertical coupler, a vertical worm, a vertical turbine, a vertical transmission cylinder, a vertical transmission bearing, a first bevel gear, a second bevel gear, a vertical rotating cylinder and a vertical rotating bearing, wherein the vertical transmission cylinder is installed inside the vertical transmission bearing, and the vertical rotating cylinder is installed inside the vertical rotating bearing.
2. The 3D scanning device according to claim 1, wherein the supporting mechanism comprises a horizontal base plate, a first vertical base plate perpendicular to the horizontal base plate, the first mirror support as a reinforced support frame; the supporting mechanism further comprises a window bottom plate and a second vertical bottom plate perpendicular to the window bottom plate, and the second reflector bracket is used as a reinforcing supporting frame.
3. A 3D scanning device according to claim 2, characterized in that a counterweight is provided on the horizontal base plate.
4. A 3D scanning device according to claim 1, wherein the optical window is angled below 10 degrees from horizontal.
5. The ozone laser radar is characterized by comprising the 3D scanning device, a station room and an ozone laser radar body, wherein the 3D scanning device is arranged on the top of the station room, the ozone laser radar body is arranged inside the station room, and the 3D scanning device and the ozone laser radar body are connected through a light path sealing cylinder.
6. The ozone lidar of claim 5, wherein the ozone lidar body comprises a laser, a Raman tube, a beam expander, a telescope, a spectrometer, a detector, a data acquisition card and an industrial personal computer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222496490.1U CN218122242U (en) | 2022-09-21 | 2022-09-21 | 3D scanning device for ozone laser radar and corresponding ozone laser radar |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222496490.1U CN218122242U (en) | 2022-09-21 | 2022-09-21 | 3D scanning device for ozone laser radar and corresponding ozone laser radar |
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| CN218122242U true CN218122242U (en) | 2022-12-23 |
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| CN202222496490.1U Active CN218122242U (en) | 2022-09-21 | 2022-09-21 | 3D scanning device for ozone laser radar and corresponding ozone laser radar |
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