Laser wind measuring device

Abstract

The application relates to a laser wind measuring device, comprising: a shell forming a hollow cavity, a front end surface of the shell being provided with a detection window; four laser radar emitting assemblies arranged in the hollow cavity via a radar mounting bracket, the radar mounting bracket having a mounting surface extending in a vertical direction; wherein the four laser radar emitting assemblies are arranged on the mounting surface along the width direction of the radar mounting bracket, and the central axes of every two adjacent laser radar emitting assemblies are arranged to cross each other in the horizontal direction and / or the vertical direction, so that the light rays emitted by the four laser radar emitting assemblies form four detection points at the target distance of the detection window, and the four detection points form a detection plane parallel to the mounting surface.

Description

Technical Field

[0001] The present application relates to the technical field of measuring equipment, and in particular to a laser wind measuring device. Background Art

[0002] LiDAR wind measurement relies on single-frequency laser technology to perform coherent heterodyne detection of the local oscillator light and the backscattered signal from atmospheric aerosols. By carefully capturing subtle changes in the Doppler shift, the device can accurately calculate radial wind speed. Furthermore, using multi-beam scanning technology, the radar can obtain wind speed information in multiple directions and infer real-time wind field data from it.

[0003] However, in traditional laser wind meters, since multiple laser emitting lenses need to be set up, the size and weight of the entire machine are large. In order to reduce the size of the entire machine, how to reasonably arrange the laser emitting lenses in the cabin is an urgent problem to be solved. Summary of the Invention

[0004] An embodiment of the present application provides a laser wind measurement device, in which the lens barrel components adopt a staggered layout, effectively utilizing the structural space and reducing the size and weight of the entire device.

[0005] In one embodiment of the present application, a laser wind measurement device is provided, comprising:

[0006] A housing, wherein the housing forms a hollow cavity and a front end surface of the housing has a detection window;

[0007] Four laser radar transmitting assemblies, the four laser radar transmitting assemblies being installed in the hollow cavity via a radar mounting bracket, the radar mounting bracket having a mounting surface extending in a vertical direction;

[0008] In which, the four laser radar transmitting assemblies are arranged on the mounting surface along the width direction of the radar mounting bracket, and the central axes of each adjacent two laser radar transmitting assemblies are arranged to cross each other in the horizontal direction and / or vertical direction, so that the light emitted by the four laser radar transmitting assemblies forms a detection point at the target distance of the detection window respectively, and the four detection points form a detection plane parallel to the mounting surface.

[0009] In one embodiment, the optical axis of each laser radar transmitting assembly has a yaw angle forming a first angle with the vertical plane, and a pitch angle forming a second angle with the horizontal plane;

[0010] Among them, the pitch angles of a pair of laser radar transmitting components arranged at intervals are the same, and the yaw angles are opposite.

[0011] In one embodiment, a pair of spaced-apart laser radar emitting assemblies are configured to tilt upward in a pitch angle, and another pair of spaced-apart laser radar emitting assemblies are configured to tilt downward in a pitch angle; and / or

[0012] A yaw angle of the pair of spaced-apart laser radar emitting assemblies is configured to tilt toward one of the laser radar emitting assemblies.

[0013] In one embodiment, two adjacent laser radar emitting assemblies are installed on the mounting surface in the vertical direction staggered with each other and abut each other.

[0014] In one embodiment, a height, a width, and a thickness of the hollow cavity are associated with the first included angle and the second included angle;

[0015] wherein, if a target value of the height is set, when d / cosy°≤2Lsiny°, A min =2Lsiny°+3d / cosy°, when d / cosy°>2Lsiny°, A min =3Lsiny°+2.5d / cosy°;

[0016] wherein, if a target value of the width is set, then C min =2L1sinx°+2dcosx°+2d / cosx°;

[0017] A minimum value of B is a larger one of B=Lcosy°+dsiny° or B=L1cosx°;

[0018] wherein, d is an outer diameter of the laser radar emitting assembly, L is a dimension of the laser radar emitting assembly protruding from the mounting surface relative to a vertical plane, L1 is a dimension of the laser radar emitting assembly protruding from the mounting surface relative to a horizontal plane, A min is a minimum value of A, C min is a minimum value of C.

[0019] In one embodiment, comprising:

[0020] At least three horizontal adjustment assemblies supporting the housing from a bottom portion, and the horizontal adjustment assemblies are not arranged in a same straight line, and the horizontal adjustment assemblies are adjustable in a height along a vertical direction to adjust an included angle of the housing with a horizontal plane;

[0021] A first adapter plate connected to the bottom portion of the housing, and the horizontal adjustment assemblies are supported and connected with the first adapter plate.

[0022] In one embodiment, each horizontal adjustment assembly comprises:

[0023] a support base fixed to a carrier surface;

[0024] a screw rod extending along a vertical direction, a bottom of the screw rod being rotatably supported by the support base around the vertical direction, and a top of the screw rod being threadedly connected to the first adapter plate;

[0025] a first nut threadedly engaged with the screw rod, and locking or unlocking the screw rod and the first adapter plate by abutting against or disengaging from the first adapter plate;

[0026] a second nut threadedly engaged with the screw rod, and locking or unlocking the screw rod and the support base by abutting against or disengaging from a top surface of the support base;

[0027] wherein a distance between the first adapter plate and the support base forms a height of the horizontal adjustment assembly.

[0028] In one embodiment, each horizontal adjustment assembly comprises:

[0029] a third nut threadedly engaged with the screw rod, and abutting against a bottom surface of the support base.

[0030] In one embodiment, the laser radar emitting assembly comprises:

[0031] a lens barrel formed as a cylinder;

[0032] a lens assembly mounted at a first end of the lens barrel, a central axis of the lens barrel coinciding with an optical axis of the lens assembly;

[0033] a laser emitting end mounted at a second end of the lens via a fiber flange;

[0034] wherein the lens assembly is fixed to the lens barrel in a direction of the optical axis via a lens compression ring, and in a radial direction perpendicular to the optical axis via at least one set screw.

[0035] In one embodiment, the fiber flange is mounted to the lens barrel via a distance adjustment assembly, wherein the distance adjustment assembly is threadedly connected with an inner wall of the lens barrel, the lens barrel has an annular groove recessed inwardly along the central axis direction from an end surface of the second end, an outer edge of the distance adjustment assembly is accommodated in the annular groove, and the distance adjustment assembly is fixedly connected with the annular groove via a colloid.

[0036] As can be seen from the above technical solution, in the laser wind measurement device of this embodiment, the lens barrel assembly adopts a staggered layout, effectively utilizing structural space and reducing the overall size and weight of the device. Furthermore, the device's leveling structure achieves leveling via an adjustment screw, making it easy to operate. Furthermore, the lens assembly in this example is simultaneously secured with a pressure ring and a set screw, providing high reliability. The laser emission docking flange is equipped with a threaded adjustment structure to fine-tune the distance between fixed positions. After adjustment, it is secured by glue injection, making adjustment easy and highly reliable. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] The following drawings are merely provided to illustrate and explain the present application, and do not limit the scope of the present application.

[0038] Figure 1 This is a schematic structural diagram of the laser wind measurement device of this application.

[0039] Figure 2 This is a schematic diagram of the layout of the laser emission components in the laser wind measurement device of the present application.

[0040] Figure 3 This is a schematic diagram of the layout of the laser emission components in the laser wind measurement device of the present application.

[0041] Figure 4 This is a schematic structural diagram of the horizontal adjustment device in the laser wind measuring device of this application.

[0042] Figure 5 This is a schematic structural diagram of the laser emission component in the laser wind measurement device of the present application. DETAILED DESCRIPTION

[0043] In order to have a clearer understanding of the technical features, purposes and effects of the invention, specific embodiments of the present invention are now described with reference to the accompanying drawings, in which the same reference numerals represent the same parts.

[0044] In this document, “illustrative” means “serving as an example, instance or illustration”, and any diagram or implementation described in this document as “illustrative” should not be interpreted as a more preferred or more advantageous technical solution.

[0045] To simplify the drawings, only the parts relevant to the present invention are schematically shown in each figure and do not represent the actual structure of the product. In addition, to simplify the drawings and facilitate understanding, in some figures, only one of the components with the same structure or function is schematically depicted or labeled.

[0046] In this document, “upper”, “lower”, “front”, “back”, “left”, “right”, etc. are only used to indicate the relative position relationship between related parts, rather than to limit the absolute positions of these related parts.

[0047] In this article, "first", "second", etc. are only used to distinguish each other, and do not indicate the importance and order, or the prerequisite for each other's existence.

[0048] In this document, "equal" and "same" are not strictly limited in the mathematical and / or geometric sense, but also include errors that can be understood by those skilled in the art and are allowed in manufacturing or use. Unless otherwise specified, the numerical ranges herein include not only the entire range within its two endpoints, but also several sub-ranges contained therein.

[0049] An embodiment of the present application provides a laser wind measurement device, in which the lens barrel components adopt a staggered layout, effectively utilizing the structural space and reducing the size and weight of the entire device.

[0050] Example embodiments will now be described more fully with reference to the accompanying drawings.

[0051] like Figures 1 to 5 As shown, one embodiment of the present application provides a laser wind measurement device, comprising:

[0052] The housing 1 forms a hollow cavity, and the front surface of the housing 1 has a detection window;

[0053] Four laser radar transmitting assemblies 2 are installed in the hollow cavity via a radar mounting bracket 3, and the radar mounting bracket 3 has a mounting surface extending in a vertical direction;

[0054] Among them, the four laser radar transmitting components 2 are arranged on the mounting surface along the width direction of the radar mounting bracket 3, and the central axes of each two adjacent laser radar transmitting components 2 are cross-arranged in the horizontal direction and / or vertical direction, so that the light emitted by the four laser radar transmitting components 2 forms a detection point at the target distance of the detection window, and the four detection points form a detection plane parallel to the mounting surface.

[0055] A laser wind radar is a remote sensing device that uses the Doppler shift generated by the interaction of laser light with atmospheric aerosol particles to measure atmospheric wind fields. The system in this example consists of four laser radar transmitter assemblies 2. Each laser radar transmitter assemblies 2 has a lens at an angle to one or both of the horizontal and vertical planes. This ensures that the laser light emitted by the four lens barrels forms a plane at a predetermined position in front of the housing. Software analysis then determines the wind speed within a specified range. The four lens barrels are arranged in a staggered pattern, effectively utilizing the internal space and reducing the overall size and weight of the system.

[0056] The laser wind radar of this example is particularly applicable, for example, to measuring wind fields in windmill environments, to calculate the wind intensity acting on windmill blades. Therefore, in this example, the emitted light from each laser radar transmitting assembly 2 forms a detection point at a target distance from the detection window. Cross-arranged laser radar transmitting assemblies can form multiple detection points (more than three) that are not co-located. This inevitably creates a quadrilateral detection plane at a target distance from the detection window, parallel to the mounting surface. The wind speed within this detection plane can be determined through software analysis.

[0057] Specifically, four laser radar transmitting assemblies 2 are installed in the hollow cavity via a radar mounting bracket 3. The radar mounting bracket 3 has a mounting surface extending in the vertical direction. The laser radar transmitting assembly 2 is installed on the radar mounting bracket 3 in a manner close to perpendicular to the mounting surface, so that the optical axis of the laser radar transmitting assembly 2 is emitted in a generally horizontal and forward manner toward the detection window on the front surface of the shell 1.

[0058] Specifically, the four laser radar emitting assemblies 2 are arranged in a row along the width of the mounting surface, approximately but not entirely on the same horizontal plane. However, the optical axis of each laser radar emitting assembly 2 is oriented in a different direction, and the central axes of two adjacent laser radar emitting assemblies 2 intersect each other in the horizontal and / or vertical directions, forming a staggered arrangement.

[0059] Among them, the staggered arrangement means that the central axes of two adjacent laser radar transmitting components 2 form an angle and are not coplanar. This arrangement allows the internal space of the cabin to be shared by the two adjacent laser radar transmitting components in both the horizontal and vertical directions. While ensuring that the optical axes of each laser radar transmitting component 2 are facing different directions, the staggered arrangement can reduce the space occupied by the four laser radar transmitting components 2 as a whole.

[0060] In this example, the vertical direction refers to a plane extending in the direction of gravity, and the horizontal direction refers to a plane direction perpendicular to the vertical direction. The vertical plane may refer to a plane extending in the direction of gravity and perpendicular to the mounting surface, and the horizontal plane may refer to a plane perpendicular to both the mounting surface and the vertical plane.

[0061] In a specific example, the optical axis of each laser radar transmitting assembly 2 has a yaw angle forming a first angle with the vertical plane, and a pitch angle forming a second angle with the horizontal plane;

[0062] Among them, the pitch angles of a pair of laser radar transmitting components 2 arranged at intervals are the same, and the yaw angles are opposite.

[0063] The yaw angle is the angle at which an object rotates around a vertical axis in a horizontal plane, specifically as left-right rotation. The pitch angle is the angle at which an object rotates around a horizontal axis in a vertical plane, specifically as up-down deviation. Figure 2 Taking the coordinate system in as an example, when the optical axis of the laser radar transmitting assembly 2 is tilted toward a direction lower than the horizontal plane, its pitch angle can be defined as negative; when the optical axis of the laser radar transmitting assembly 2 is tilted toward a direction higher than the horizontal plane, its pitch angle can be defined as positive; when the optical axis of the laser radar transmitting assembly 2 is deflected toward the left side (first side) of the vertical plane, its yaw angle can be defined as positive; when the optical axis of the laser radar transmitting assembly 2 is deflected toward the right side (second side) of the vertical plane, its yaw angle can be defined as negative.

[0064] Among them, the staggered arrangement of the four laser radar transmitting components 2 is such that a pair of laser radar transmitting components 2 arranged at intervals have the same pitch angle and opposite yaw angle.

[0065] by Figure 2 From left to right, the leftmost lens assembly is No. 1, and the rightmost lens assembly is No. 4. Lens assemblies No. 1 and No. 3 are spaced apart, while those No. 2 and No. 4 are spaced apart. Lens assemblies No. 1 and No. 3 have the same pitch angle, but opposite yaw angles; while Lens assemblies No. 2 and No. 4 have the same pitch angle, but opposite yaw angles.

[0066] For example, taking the first angle as y and the second angle as x, the angles between the No. 1 lens barrel assembly, the No. 2 lens barrel assembly, the No. 3 lens barrel assembly, and the No. 4 lens barrel assembly and the horizontal plane and the vertical plane are (x°, -y°), (-x°, -y°), (x°, y°), and (-x°, y°), respectively.

[0067] Furthermore, the pitch angles of one pair of spaced-apart laser radar transmitting assemblies 2 are configured to be tilted upward, and the pitch angles of the other pair of spaced-apart laser radar transmitting assemblies 2 are configured to be tilted downward.

[0068] Optionally, the yaw angle of a pair of spaced-apart laser radar emitting assemblies 2 is configured to be tilted toward a laser radar emitting assembly 2 sandwiched between the pair of laser radar emitting assemblies 2. Each pair of spaced-apart laser radar emitting assemblies 2 sandwiches a laser radar emitting assembly 2, and the pair of laser radar emitting assemblies 2 are tilted relative to each other toward the middle laser radar emitting assembly 2. For example, lens barrel assembly No. 1 and lens barrel assembly No. 3 are spaced-apart, and both lens barrel assembly No. 1 and lens barrel assembly No. 3 are tilted toward lens barrel assembly No. 2. The relative position refers to the pair of laser radar emitting assemblies 2 being arranged with their front ends close to each other.

[0069] Then lens barrel assembly No. 1 and lens barrel assembly No. 3 are opposite to each other, lens barrel assembly No. 2 and lens barrel assembly No. 4 are opposite to each other, lens barrel assembly No. 1 and lens barrel assembly No. 3 are tilted upward, and lens barrel assembly No. 2 and lens barrel assembly No. 4 are tilted downward. Alternatively, lens barrel assembly No. 1 and lens barrel assembly No. 3 are opposite to each other, lens barrel assembly No. 2 and lens barrel assembly No. 4 are opposite to each other, lens barrel assembly No. 1 and lens barrel assembly No. 3 are tilted downward, and lens barrel assembly No. 2 and lens barrel assembly No. 4 are tilted upward.

[0070] This staggered arrangement, with the components facing each other in the width direction (left-right), reduces the space occupied by the tilted LiDAR transmitter assembly. For example, if lens barrel assembly No. 1 and lens barrel assembly No. 3 face each other in the width direction and are arranged at an opposite pitch angle to lens barrel assembly No. 2, lens barrel assembly No. 1 and lens barrel assembly No. 3 can share the space above lens barrel assembly No. 2. Similarly, lens barrel assembly No. 2 and lens barrel assembly No. 4 can share the space below lens barrel assembly No. 3. In the height direction (upward and downward), the arrangement of facing away from each other facilitates space sharing.

[0071] Furthermore, two adjacent laser radar transmitting assemblies 2 are installed on the mounting surface in an interlaced manner in the vertical direction and are connected to each other.

[0072] Specifically, if Figure 3 As shown, two adjacent LiDAR emitting assemblies 2 are not located on the same horizontal plane on the mounting surface. Instead, they are staggered, one above the other. By staggering and connecting them vertically, the width occupied by the LiDAR emitting assemblies 2 can be shortened horizontally. Alternatively, the two spaced-apart LiDAR emitting assemblies 2 can be located on the same horizontal plane on the mounting surface.

[0073] In a specific example, the width of the radar mounting bracket 3 is typically determined by the width of the laser wind measuring device's circuit board. Given the width of the radar mounting bracket 3, the vertical height difference between two adjacent laser radar transmitting assemblies 2 can be determined in conjunction with the diameter of the laser radar transmitting assemblies 2. An increase in this height difference correlates with a decrease in the width of the radar mounting bracket 3.

[0074] The height, width, and thickness of the hollow cavity are associated with the first angle and the second angle.

[0075] For example, the angles between the No. 1 lens barrel assembly, the No. 2 lens barrel assembly, the No. 3 lens barrel assembly, the No. 4 lens barrel assembly and the horizontal plane and the vertical plane are (x°, -y°), (-x°, -y°), (x°, y°), (-x°, y°) respectively; the outer diameter of the lens barrel assembly is d, the length L (the convex mounting surface, the inner edge size of the lens barrel relative to the vertical plane), the length L1 (the convex mounting surface, the inner edge size of the lens barrel relative to the horizontal plane); the space size length, width, height occupied by the four lens barrel assemblies are A, B, C respectively.

[0076] Wherein, based on the arrangement of the lens barrel assembly, the height and the width of the hollow cavity are related to each other. When the width of the hollow cavity is set as a target value, the height of the hollow cavity can be determined based on the first angle, the second angle and the size of the lens barrel assembly. Similarly, when the height of the hollow cavity is set as a target value, the width of the hollow cavity can be determined based on the first angle, the second angle and the size of the lens barrel assembly. And, generally, the target value is usually taken as the minimum value. Then the corresponding another parameter can also be determined as the minimum value.

[0077] For example, when the value of C is required to be the minimum value:

[0078] When d / cosy°≤2Lsiny°, Amin=2Lsiny°+3d / cosy°;

[0079] When d / cosy°>2Lsiny°, Amin=3Lsiny°+2.5d / cosy°.

[0080] Wherein, the value relationship between d / cosy° and 2Lsiny° is to determine which of the length and the diameter of the lens barrel assembly is the main parameter affecting the space occupied by the lens barrel assembly. When d / cosy°≤2Lsiny°, the influence of the length of the lens barrel assembly is greater than that of the diameter, and when d / cosy°>2Lsiny°, the influence of the diameter of the lens barrel assembly is greater than that of the length.

[0081] Similarly, when the value of A is required to be the minimum value:

[0082] Cmin=2L1sinx°+2dcosx°+2d / cosx°.

[0083] And the thickness B of the hollow cavity is only related to the first angle, the second angle and the size of the lens barrel assembly, and the minimum value of the thickness B is the maximum value of B=Lcosy°+dsiny° and Bmin=L1cosx°. That is, when the value of B=Lcosy°+dsiny° is greater than B=L1cosx°, the minimum value of the thickness B is Bmin=Lcosy°+dsiny°.

[0084] The thickness B depends on how the lens barrel assembly is mounted relative to the mounting surface. When B=Lcosy°+dsiny°, the rear end of the lens barrel assembly can be approximately considered flush with the mounting surface. When B=L1cosx°, the lens barrel assembly can be mounted on the mounting surface through the side wall of the lens barrel assembly.

[0085] In a specific example, x = 12.5°, y = 15°, d = 60mm, L = 127mm, and L1 = 142mm. Because the overall length is controlled by other components on the base, and the width of the radar mounting bracket 3 is determined by the width of the laser wind measurement device's circuit board, the height (C) is set to the minimum value as the target.

[0086] Based on d / cosy°=62.12mm, 2Lsiny°=65.74, and d / cosy°<2Lsiny°, therefore, Amin=2Lsiny°+3d / cosy°=252.09mm. Considering manufacturability and assembly issues, it can be determined that A=268mm. Under this basic condition, the four lens barrels are arranged in a spatial manner according to the A value, and C=147mm can be obtained.

[0087] Based on Lcosy°+dsiny°=138.2mm, L1cosx°=138.64mm, Lcosy°+dsiny<L1cosx°, therefore, Bmin= L1cosx°=138.64mm. Considering manufacturability, B=140mm is determined.

[0088] In a specific example, Figure 4 Shown, including:

[0089] At least three level adjustment assemblies 30, the level adjustment assemblies 30 supporting the housing 1 from the bottom, and the level adjustment assemblies 30 are not arranged on the same straight line at the same time, and the level adjustment assemblies 30 are adjustable in height along the vertical direction to adjust the angle between the housing 1 and the horizontal plane;

[0090] The first adapter plate 40 is connected to the bottom of the housing 1 , and the horizontal adjustment assembly 30 is supported and connected to the first adapter plate 40 .

[0091] The three points can define a plane, and the three level adjustment assemblies 30 can adjust the height respectively to determine the extension direction of the bottom surface of the housing 1, that is, the angle with the horizontal plane. Optionally, the horizontal inclination sensor disposed in the housing can be disposed within the range enclosed by the three level adjustment assemblies 30.

[0092] Specifically, each level adjustment assembly 30 includes:

[0093] A support base 31 is fixed to the surface of the carrier;

[0094] The screw 32 extends in the vertical direction. The bottom of the screw 32 is supported by the support base 31 for rotation around the vertical direction, and the top of the screw 32 is threadedly connected to the first adapter plate 40;

[0095] A first nut 33 , the first nut being threadably engaged with the screw rod 32 and locking or unlocking the screw rod 32 and the first adapter plate 40 by abutting against or disengaging from the first adapter plate 40 ;

[0096] A second nut 34 , the second nut 34 is threadedly engaged with the screw rod 32 , and the screw rod 32 and the support base 31 are locked or unlocked by the second nut 34 abutting against or disengaging from the top surface of the support base 31 ;

[0097] The distance between the first adapter plate 40 and the support base 31 is formed to be the height of the horizontal adjustment component 30 .

[0098] Furthermore, each level adjustment assembly 30 includes:

[0099] The third nut 35 is threadably engaged with the screw rod 32 and abuts against the bottom surface of the support seat 31 .

[0100] like Figure 4 As shown, a single horizontal adjustment component 30 consists of a support base, a screw and three nuts. One end of the horizontal adjustment component cooperates with the thread on the host adapter plate through the thread on the screw, and the support base and the bracket adapter plate at the other end are fixed with screws, and the third nut and the screw are firmly fixed by welding.

[0101] The third nut 35 is threadedly engaged with the screw 32 to form a structure that can be fixed within the support base 31. The screw 32 has rotational freedom relative to the support base 31 and also has rotational freedom relative to the first adapter plate 40. The engagement of the second nut 34 and the third nut 35 defines the rotational freedom of the screw 32 relative to the support base 31, and the position of the first nut 33 on the screw 32 defines the distance between the first adapter plate 40 and the support base 31.

[0102] Adjustment process: When the level needs to be adjusted, turn the second nut upwards and the first nut downwards. At this time, the screw and the support base can rotate. At the same time, the height of the host adapter plate to the bracket adapter plate can be adjusted by turning the screw. The height adjustment of the two level adjustment components can achieve leveling of the equipment.

[0103] Adjustment and fixation: After the height is adjusted, turn the first nut upward to support the host adapter plate, and at the same time turn the second nut downward to press it with the third nut to ensure that the screw and the support adapter plate no longer rotate.

[0104] In a specific example, Figure 5 As shown, the laser radar transmitting assembly 2 includes:

[0105] The lens barrel 21 is formed into a cylindrical shape;

[0106] The lens assembly 22 is mounted on the first end of the lens barrel 21, and the central axis of the lens barrel 21 coincides with the optical axis of the lens assembly 22;

[0107] The laser emitting end 23 is mounted on the second end of the lens 21 via the optical fiber flange 24;

[0108] The lens assembly 22 is fixed to the lens barrel 21 in the optical axis direction via a lens pressing ring 25 , and is fixed to the lens barrel 21 in the radial direction perpendicular to the optical axis via at least one top screw 26 .

[0109] In this example, the lens assembly 22 and the lens pressure ring 25 are engaged with the inner wall of the lens barrel 21 through threads, wherein the inner side of the lens assembly 22 is limited by the lens barrel step surface, and the lens pressure ring 25 is located on the outer side of the lens assembly 22 to press the lens assembly 22 into position. Among them, the lens pressure ring 25 is limited in the direction of the central axis of the lens barrel 21 by the threads, but is limited only by friction in the direction of rotation around the central axis. Furthermore, a top screw 26 is added to the side of the lens assembly 22 and the lens pressure ring 25. The top screw 26 strongly fixes the lens pressure ring 25 in the direction of rotation around the central axis to ensure the reliability of the lens fixation.

[0110] Specifically, the fiber optic flange 24 is mounted on the lens barrel 21 via a distance adjustment assembly 27, wherein the distance adjustment assembly 27 is threadedly connected to the inner wall of the lens barrel 21. The fiber optic flange 24 is fixed to the optical distance adjustment assembly 27, and the optical distance adjustment assembly 27 is fixed to the lens barrel 21 via threads.

[0111] The lens barrel 21 has an annular groove 28 that is recessed inwardly along the central axis from the end surface of the second end. The outer edge of the optical distance adjustment component 27 is accommodated in the annular groove 28 and fixedly connected to the annular groove 28 via colloid.

[0112] An outer ring structure is added to the optical distance adjustment assembly 27, which inserts into the U-shaped groove of the lens barrel. When the distance between the optical fiber flange 24 and the lens assembly 22 is adjusted to meet the required distance through the threaded fit between the optical distance adjustment assembly 27 and the lens barrel 21, glue can be poured into the annular groove of the lens barrel 21 to firmly fix the optical fiber adjustment assembly 27 to the lens barrel 21, thereby ensuring the distance between the optical fiber flange 24 and the lens assembly 22 is locked, increasing reliability.

[0113] As can be seen from the above technical solution, in the laser wind measurement device of this embodiment, the lens barrel assembly adopts a staggered layout, effectively utilizing structural space and reducing the overall size and weight of the device. Furthermore, the device's leveling structure achieves leveling via an adjustment screw, making it easy to operate. Furthermore, the lens assembly in this example is simultaneously secured with a pressure ring and a set screw, providing high reliability. The laser emission docking flange is equipped with a threaded adjustment structure to fine-tune the distance between fixed positions. After adjustment, it is secured by glue injection, making adjustment easy and highly reliable.

[0114] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present application shall be included in the scope of protection of the present application.

Claims

1. A laser wind measuring device, characterized in that: include: A housing (1), the housing (1) forming a hollow cavity, and a front end surface of the housing (1) having a detection window; Four laser radar emitting assemblies (2), the four laser radar emitting assemblies (2) being installed in the hollow cavity via a radar mounting bracket (3), the radar mounting bracket (3) having a mounting surface extending in a vertical direction; The four laser radar emitting assemblies (2) are arranged on the mounting surface along the width direction of the radar mounting bracket (3), and the central axes of two adjacent laser radar emitting assemblies (2) are arranged to cross each other in the horizontal direction and / or the vertical direction, so that the light emitted by the four laser radar emitting assemblies (2) respectively forms a detection point at the target distance of the detection window, and the four detection points form a detection plane parallel to the mounting surface; The optical axis of each laser radar transmitting assembly (2) has a yaw angle forming a first angle with the vertical plane, and a pitch angle forming a second angle with the horizontal plane; wherein a pair of laser radar transmitting assemblies (2) arranged at intervals have the same pitch angle and opposite yaw angles; The height C, width A, and thickness B of the hollow cavity are associated with the first angle y and the second angle x; If the target value of height C is set, when d / cosy°≤2Lsiny°, A min =2Lsiny°+3d / cosy°, when d / cosy°>2Lsiny°, A min =3Lsiny°+2.5d / cosy°; If the target value of width A is set, then C min =2L1sinx°+2dcosx°+2d / cosx°; The minimum value of B is the larger of B=Lcosy°+dsiny° or B=L1cosx°; Wherein, d is the outer diameter of the laser radar transmitting assembly (2), L is the dimension of the laser radar transmitting assembly (2) protruding from the mounting surface relative to the vertical plane, L1 is the dimension of the laser radar transmitting assembly (2) protruding from the mounting surface relative to the horizontal plane, A min is the minimum value of A, C min is the minimum value of C.

2. The laser wind measuring device according to claim 1, characterized in that: The pitch angles of one pair of spaced-apart laser radar emitting assemblies (2) are configured to tilt upward, and the pitch angles of the other pair of spaced-apart laser radar emitting assemblies (2) are configured to tilt downward; and / or The yaw angles of a pair of laser radar emitting assemblies (2) arranged at intervals are configured to tilt toward a laser radar emitting assembly (2) between the two.

3. The laser wind measuring device according to claim 1, characterized in that: Two adjacent laser radar transmitting assemblies (2) are installed on the installation surface in a staggered manner in the vertical direction and are connected to each other.

4. The laser wind measuring device according to claim 1, characterized in that: include: At least three horizontal adjustment components (30), the horizontal adjustment components (30) supporting the shell (1) from the bottom, the horizontal adjustment components (30) not being arranged in the same straight line, and the height of the horizontal adjustment components (30) being adjustable along the vertical direction to adjust the angle between the shell (1) and the horizontal plane; A first adapter plate (40), the first adapter plate (40) is connected to the bottom of the housing (1), and the horizontal adjustment component (30) is supported and connected to the first adapter plate (40).

5. The laser wind measuring device according to claim 4, characterized in that: Each leveling assembly (30) includes: A support base (31), wherein the support base (31) is fixed to the surface of the carrier; A screw rod (32), the screw rod (32) extending in a vertical direction, the bottom of the screw rod (32) being supported by the support seat (31) in a rotational manner around the vertical direction, and the top of the screw rod (32) being threadedly connected to the first adapter plate (40); a first nut (33), the first nut being threadably engaged with the screw rod (32) and locking or unlocking the screw rod (32) and the first adapter plate (40) by abutting against or disengaging from the first adapter plate (40); a second nut (34), the second nut (34) being threadably engaged with the screw rod (32), and the screw rod (32) and the support seat (31) being locked or unlocked by the second nut (34) abutting against or disengaging from the top surface of the support seat (31); Wherein, the distance between the first adapter plate (40) and the support seat (31) is formed to be the height of the horizontal adjustment component (30).

6. The laser wind measurement device according to claim 5, characterized in that: Each leveling assembly (30) includes: A third nut (35), the third nut (35) is threadably engaged with the screw rod (32) and abuts against the bottom surface of the support seat (31).

7. The laser wind measurement device according to claim 1, characterized in that: The laser radar transmitting assembly (2) comprises: A lens barrel (21), wherein the lens barrel (21) is formed into a cylindrical shape; A lens assembly (22), wherein the lens assembly (22) is mounted on a first end of the lens barrel (21), and a central axis of the lens barrel (21) coincides with an optical axis of the lens assembly (22); a laser emitting end (23), the laser emitting end (23) being mounted on the second end of the lens barrel (21) via an optical fiber flange (24); The lens assembly (22) is fixed to the lens barrel (21) in the direction of the optical axis via a lens pressing ring (25), and is fixed to the lens barrel (21) in a radial direction perpendicular to the optical axis via at least one top screw (26).

8. The laser wind measuring device according to claim 7, characterized in that: The optical fiber flange (24) is mounted on the lens barrel (21) via a spacing adjustment component (27), wherein the spacing adjustment component (27) is threadedly connected to the inner wall of the lens barrel (21), and the lens barrel (21) has an annular groove (28) recessed inwardly along the central axis from the end surface of the second end, and the outer edge of the spacing adjustment component (27) is accommodated in the annular groove (28) and fixedly connected to the annular groove (28) via a colloid.

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