阅读说明：本技术 一种镜头角度校准系统及方法 (Lens angle calibration system and method ) 是由 栾北瓯 于 2019-12-27 设计创作，主要内容包括：一种镜头角度校准系统及方法,涉及镜头角度校准技术领域,所述校准系统包括测量仪和角度调节装置,所述测量仪包括相互连接的第一水平尺和第一夹持结构,所述第一水平尺的第一测量线与所述镜头的第一基准线平行,所述第一夹持结构能够与所述镜头可拆卸连接；所述角度调节装置用于与所述镜头连接,以对所述镜头的俯仰角度进行调节。镜头角度校准方法应用镜头角度校准系统进行校准及调整。由于使用校准系统能够对使得镜头与水平面平行,因此可提高镜头安装角度的准确度,减小安装误差。(A lens angle calibration system and a method relate to the technical field of lens angle calibration, the calibration system comprises a measuring instrument and an angle adjusting device, the measuring instrument comprises a first horizontal rule and a first clamping structure which are connected with each other, a first measuring line of the first horizontal rule is parallel to a first datum line of a lens, and the first clamping structure can be detachably connected with the lens; the angle adjusting device is used for being connected with the lens so as to adjust the pitching angle of the lens. The lens angle calibration method uses a lens angle calibration system to calibrate and adjust. Because the calibration system can make the lens parallel to the horizontal plane, the accuracy of the lens installation angle can be improved, and the installation error is reduced.)

1. A lens angle calibration system is characterized by comprising a measuring instrument and an angle adjusting device, wherein the measuring instrument comprises a first horizontal ruler and a first clamping structure which are connected with each other, a first measuring line of the first horizontal ruler is parallel to a first datum line of a lens, and the first clamping structure can be detachably connected with the lens; the angle adjusting device is used for being connected with the lens so as to adjust the pitching angle of the lens.

2. The system of claim 1, wherein the first clamping structure comprises a first linear structure and a second linear structure connected to the first linear structure; the length direction of the first linear structure is perpendicular to the length direction of the second linear structure, and the first horizontal ruler is installed on the first linear structure.

3. The lens angle calibration system according to claim 1, wherein the angle adjustment means includes a first adjustment mechanism including a link for connecting with the lens, an adjustment member perpendicular to the first reference line of the lens, and a stopper member connected with the link and capable of contacting with or separating from the adjustment member by rotating the link to change an angle between the first reference line of the lens and a horizontal plane, the stopper member contacting with the adjustment member to fix the adjustment member.

4. A lens angle calibration system as claimed in claim 3, wherein the connecting member comprises a shield for mounting the lens, a positioning ring is provided at one end of the shield, the first clamping structure comprises a sleeve structure, the sleeve structure is sleeved on and connected to the positioning ring, and the sleeve structure is connected to the lens through the positioning ring.

5. The lens angle calibration system of claim 3, wherein the gauge further comprises a second level, the second level being connected to the first clamping structure, the second level having a second detection line.

6. A lens angle calibration method using the lens angle calibration system according to any one of claims 1 to 5, comprising:

connecting a lens to a first clamping structure of a measuring instrument so that a first detection line of a first horizontal ruler in the measuring instrument is parallel to a first reference line of the lens, and the first reference line is parallel to an optical axis of the lens;

judging whether the first detection line is parallel to a horizontal plane or not through the first horizontal ruler;

if the first detection line is not parallel to the horizontal plane, the lens is adjusted through an angle adjusting device and drives the measuring instrument to swing so as to change the angle between the first detection line and the horizontal plane until the first detection line is parallel to the horizontal plane.

7. The lens angle calibration method according to claim 6, wherein after the surveying instrument is connected to a lens while a second detection line of a second level in the surveying instrument is made parallel to a second reference line of the lens, and after the first detection line is made parallel to a horizontal plane,

Judging whether the second detection line is parallel to the horizontal plane or not through the second level ruler,

if the second detection line is not parallel to the horizontal plane, the lens is adjusted to drive the measuring instrument to swing so as to change the angle between the second detection line and the horizontal plane until the second detection line is parallel to the horizontal plane.

8. The lens angle calibration method according to claim 7, wherein the first reference line is an optical axis of the lens, the second reference line is located on the same plane as the first reference line, and the second reference line is perpendicular to the first reference line.

9. The lens angle calibration method according to claim 6, wherein when the first detection line is parallel to a horizontal plane, the lens is fixed by the angle adjustment device so that an angle between the first reference line and the horizontal plane is fixed.

10. The lens angle calibration method of claim 7, wherein the measuring instrument is separated from the lens when the first detection line is parallel to a horizontal plane and the second detection line is parallel to a horizontal plane.

Technical Field

The invention relates to the field of lens angle calibration, in particular to a lens angle calibration system and method.

Background

With the improvement of living standard of people, the number of times of using vehicles is gradually increased in daily travel, and the increase of private cars and shared vehicles leads to the increase of vehicles on roads, but the accidents among the vehicles are increased. At present, there is a monitoring device for collecting and analyzing road images and performing early warning, that is, collecting images around a car, processing and judging the images to assist a driver to sense small changes in the visual field, and early warning is performed, so that accidents are reduced.

However, if the lens of the monitoring device is not in a horizontal state, the angle of the captured image is deviated, which may cause erroneous recognition. At present, in the process of mounting a lens, whether the angle of the lens is in a horizontal state is generally judged by naked eyes of an installer, and the judgment mode enables the mounting error of the lens to be larger.

Disclosure of Invention

The invention aims to provide a lens angle calibration system and a lens angle calibration method, which can accurately detect and adjust the lens angle so as to enable the lens to be in a horizontal state.

The embodiment of the invention is realized by the following steps:

a lens angle calibration system, which is applied to the lens angle calibration method in the above technical solution, includes a measuring instrument and an angle adjusting device, the measuring instrument includes a first level and a first clamping structure that are connected with each other, a first measurement line of the first level is parallel to a first reference line of the lens, and the first clamping structure can be detachably connected with the lens; the angle adjusting device is used for being connected with the lens so as to adjust the pitching angle of the lens.

In a preferred embodiment of the present invention, the first clamping structure includes a first linear structure and a second linear structure connected to the first linear structure; the length direction of the first linear structure is perpendicular to the length direction of the second linear structure, and the first horizontal ruler is installed on the first linear structure.

In a preferred embodiment of the present invention, the angle adjusting apparatus includes a first adjusting mechanism, the first adjusting mechanism includes a connecting member, an adjusting component and a stopping member, the connecting member is used for connecting with the lens, the connecting member is perpendicular to the first reference line of the lens, the adjusting component is connected with the connecting member, the stopping member can contact with or separate from the adjusting component by driving the connecting member to rotate to change the first actual angle of the lens, and the stopping member contacts with the adjusting component to fix the adjusting component.

In a preferred embodiment of the present invention, the connecting member includes a protective cover, the protective cover is used for mounting the lens, a positioning ring is disposed at one end of the protective cover, the first clamping structure includes a sleeve structure, the sleeve structure is sleeved on the positioning ring and connected to the positioning ring, and the sleeve structure is connected to the lens through the positioning ring.

In a preferred embodiment of the invention, the measuring instrument further comprises a second level, the second level being connected to the first holding structure, the second level being provided with a second detection line.

In a preferred embodiment of the present invention, the second level is connected to the first clamping structure through a second clamping structure, the second clamping structure includes a base and a clamping frame mounted on the base, the second level is mounted on the base, and the base is connected to the first clamping structure.

In a preferred embodiment of the present invention, the adjusting assembly includes a dial wheel and a transmission structure, and the dial wheel is in transmission connection with the connecting piece through the transmission structure.

In a preferred embodiment of the present invention, the transmission structure includes a worm wheel and a worm, the adjusting assembly further includes a limiting frame, the limiting frame is provided with a limiting groove, and a rod portion of the worm extends into the limiting groove.

In a preferred embodiment of the invention, the locking element is provided with a first locking tooth which is distributed in an annular manner, and the end face of the thumb wheel facing the locking element is provided with a second locking tooth which is distributed in an annular manner, the first locking tooth being capable of meshing with the second locking tooth.

In a preferred embodiment of the invention, the stop member is provided with an elongated hole, and the stop member further comprises a positioning bolt that can pass through the elongated hole.

A lens angle calibration method, the lens angle calibration system applying the technical scheme, comprises:

connecting a lens to a first clamping structure of a measuring instrument so that a first detection line of a first horizontal ruler in the measuring instrument is parallel to a first reference line of the lens, and the first reference line is parallel to an optical axis of the lens;

Judging whether a first detection line is parallel to a horizontal plane or not through the first horizontal ruler;

if the first detection line is not parallel to the horizontal plane, the lens is adjusted through an angle adjusting device and drives the measuring instrument to swing so as to change the angle between the first detection line and the horizontal plane until the first detection line is parallel to the horizontal plane.

In a preferred embodiment of the present invention, after the surveying instrument is connected to the lens, a second detection line of a second level in the surveying instrument is parallel to a second reference line of the lens, and after the first detection line is parallel to the horizontal plane, whether the second detection line is parallel to the horizontal plane is determined by the second level.

If the second detection line is not parallel to the horizontal plane, the lens is adjusted to drive the measuring instrument to swing so as to change the angle between the second detection line and the horizontal plane until the second detection line is parallel to the horizontal plane.

In a preferred embodiment of the present invention, the first reference line is an optical axis of the lens, the second reference line and the first reference line are located on the same plane, and the second reference line is perpendicular to the first reference line.

In a preferred embodiment of the present invention, when the first detection line is parallel to the horizontal plane, the lens is fixed by the angle adjusting device, so that the angle between the first reference line and the horizontal plane is fixed.

In a preferred embodiment of the present invention, when the first detection line is parallel to the horizontal plane, the measuring instrument is separated from the lens.

In a preferred embodiment of the present invention, when the first detection line is parallel to a horizontal plane and the second detection line is parallel to the horizontal plane, the measuring instrument is separated from the lens.

The embodiment of the invention has the beneficial effects that:

the lens angle calibration system is used for detecting and adjusting whether the optical axis of the lens is parallel to the horizontal plane, and specifically, the first detection line of the measuring instrument is parallel to the optical axis of the lens, so that the angle between the first detection line of the first level bar in the measuring instrument and the horizontal plane is the angle between the optical axis of the lens and the horizontal plane. Whether first detection line is parallel with the horizontal plane can be judged through first level bar to can learn whether the optical axis of camera lens is parallel with the horizontal plane. If the optical axis of the lens is parallel to the horizontal plane, the optical axis angle of the lens does not need to be adjusted. If the optical axis of the lens is not parallel to the horizontal plane, the angle of the lens is adjusted through the angle adjusting device, and the lens is connected with the first clamping structure of the measuring instrument, and the first clamping structure is connected with the first horizontal ruler, so that after the angle of the lens is changed, the angle of the first horizontal ruler is changed along with the change, and the change is specifically represented as the synchronous change of the first detection line of the first horizontal ruler and the optical axis of the lens. The first detection line gradually approaches to be parallel to the horizontal plane through the angle adjusting device, and finally when the first detection line is parallel to the horizontal plane, the optical axis of the lens is parallel to the horizontal plane.

Because the measuring instrument and the angle adjusting device in the lens angle calibration system provided by the application are matched to adjust the optical axis angle of the lens, the optical axis of the lens is parallel to the horizontal plane. Therefore, the accuracy of the lens mounting angle can be improved, and the mounting error can be reduced.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

Fig. 1 is a flowchart of a lens angle calibration method according to an embodiment of the present invention;

fig. 2 is a flowchart of a lens angle calibration method according to a second embodiment of the present invention;

fig. 3 is a schematic view illustrating an assembly of a detector and an object to be detected in a lens angle calibration system according to an embodiment of the present invention;

fig. 4 is a schematic view illustrating an assembly of a detector and a tape measure in the lens angle calibration system according to the second embodiment of the present invention;

fig. 5 is an exploded view of a detector in the lens angle calibration system according to the second embodiment of the present invention;

Fig. 6 is a schematic structural diagram of an angle adjustment device in a lens angle calibration system according to a first embodiment and a second embodiment of the present invention;

fig. 7 is an exploded view of an angle adjustment device in a lens angle calibration system according to a first embodiment and a second embodiment of the present invention;

fig. 8 is a second schematic structural diagram of an angle adjustment device in a lens angle calibration system according to the first and second embodiments of the present invention.

In the figure:

101-a first level; 102-a lens; 103-a housing; 104-a first linear structure; 105-a second rectilinear structure; 106-casing structure; 107-second level; 108-a base; 109-vertical plates; 110-a mounting surface;

211-thumb wheel; 212-a worm; 213-a worm gear; 214-a stem portion; 216 — first stop tooth; 217-jack; 220-a stop; 221-a second stop tooth; 223-positioning bolt; 230-a connector; 231-first connecting shaft; 232-protective cover; 233-a second connecting shaft; 234-a cartridge; 235-a limiting block; 236-a positioning ring; 240-a limiting frame; 241-a main body; 242-a limiting groove; 243-limit arm; 252-a mount; 253-notch.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship which the product of the present invention is conventionally placed in use, only for convenience of describing the present invention and simplifying the description, but not for indicating or implying that the lens angle calibration method or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.

Furthermore, the terms "horizontal", "vertical", "overhang" and the like do not imply that the components are required to be absolutely horizontal or overhang, but may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly and may, for example, be 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 meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Some embodiments of the invention are described in detail below with reference to the accompanying drawings. The embodiments described below and the features of the embodiments can be combined with each other without conflict.

First embodiment

As shown in fig. 3-8, the present embodiment provides a lens angle calibration system, which is applied to a lens angle calibration method, and the calibration includes a measuring instrument and an angle adjusting device, wherein the measuring instrument includes a first level 101 and a first clamping structure, a first measuring line of the first level 101 is parallel to a first reference line of the lens 102, and the first clamping structure can be detachably connected to the lens 102; the angle adjusting device is used for connecting with the lens 102 to adjust the pitch angle of the lens 102.

The first level 101 may be a level having a bubble, and specifically, a movable direction of the bubble, that is, an extending direction of the first measurement line, and whether the first measurement line is in a horizontal state is determined by a position of the bubble, and if the first measurement line is in the horizontal state, it is described that a first reference line horizontal to the first measurement line is in the horizontal state, that is, the optical axis of the lens 102 is in the horizontal state. Specifically, a mark (arrow or graduation line) is disposed on first level 101, and when the first measurement line of first level 101 is in a horizontal state, the bubble is located at the position pointed by the mark, and when the first measurement line of first level 101 is in a non-horizontal state, the bubble moves to other areas outside the mark indication area along the first measurement line.

The first level bar 101 can reflect whether the optical axis of the lens 102 is parallel to the horizontal plane in real time, so that a clear reference standard is provided for adjusting the pitch angle of the lens 102, and the adjustment precision is improved.

As shown in fig. 3, in an alternative of the present embodiment, the first clamping structure includes a first linear structure 104 and a second linear structure 105 connected to the first linear structure 104; the length direction of the first linear structure 104 is perpendicular to the length direction of the second linear structure 105, and the first horizontal ruler 101 is installed on the first linear structure 104. That is to say, the first clamping structure is a right-angle structure as a whole, and the first clamping structure provides a certain installation space for the first level bar 101, so that the first level bar 101 is parallel to the first reference line of the lens 102 and can swing along with the lens 102.

Specifically, one end of the second linear structure 105 is used for connecting with the lens 102, and the other end is connected with the first linear structure 104, and the first level 101 is mounted on the first linear structure 104.

As shown in fig. 6 to 8, in a preferred embodiment, the angle adjusting apparatus includes a first adjusting mechanism including a link 230, an adjusting member and a stopper 220, the link 230 is configured to be coupled to the lens 102, the link 230 is perpendicular to a first reference line of the lens 102, the adjusting member is coupled to the link 230, and the stopper 220 can be brought into contact with or separated from the adjusting member by rotating the link 230 to change a first actual angle of the lens 102, and the stopper 220 is in contact with the adjusting member to fix the adjusting member.

Specifically, in the process of adjusting the angle of the lens 102, the stop member 220 is separated from the adjusting assembly, so that the adjusting assembly can drive the lens 102 to rotate, so as to change the angle between the optical axis of the lens 102 and the horizontal plane, and after the adjustment is completed, the stop member 220 is contacted with the adjusting assembly to fix the adjusting assembly, so that the adjusting assembly cannot rotate, so that the lens 102 cannot be driven to rotate, and the angle between the optical axis of the lens 102 and the horizontal plane is fixed.

In one possible implementation, the gauge may be directly connected to the lens 102.

Alternatively, in another preferred embodiment, the gauge may be connected to the lens 102 by a connector 230. Specifically, the connecting member 230 includes a shield 232, the shield 232 is used for mounting the lens 102, one end of the shield 232 is provided with a positioning ring 236, the first clamping structure includes a sleeve structure 106, the sleeve structure 106 is sleeved on the positioning ring 236 and connected with the positioning ring 236, and the sleeve structure 106 is connected with the lens 102 through the positioning ring 236.

The sleeve structure 106 is mounted to the second linear structure 105 at an end remote from the first linear structure 104.

The sleeve structure 106 and the positioning ring 236 may be fixed by interference fit, or may be connected by a bolt or other connecting structure.

The adjusting assembly can be electrically driven or manually driven, and is preferably manually driven, the limitation of the manual drive on the aspect of structural installation is small, the structures such as a connecting wire are not needed, the structure is simple, and the operation is convenient.

When the adjustment assembly is manually driven, the following structure may be employed: the adjusting assembly comprises a thumb wheel 211 and a transmission structure, wherein the thumb wheel 211 is in transmission connection with the connecting piece 230 through the transmission structure. An operator manually dials the dial wheel 211, the dial wheel 211 drives the connecting piece 230 to rotate through the transmission mechanism, so that the lens 102 and the measuring instrument are driven to rotate, the angle between the optical axis of the lens 102 and the horizontal plane is changed, the angle between the first horizontal ruler 101 and the horizontal plane is also changed, and whether the optical axis of the lens 102 is parallel to the horizontal plane or not can be known from the first horizontal ruler 101. The transmission structure enables the power between the thumb wheel 211 and the connecting piece 230 to be transmitted, and the power transmission can be realized even if the connecting piece 230 is far away from the thumb wheel 211 due to the transmission structure.

In order to facilitate the poking of the poking wheel 211, the outer circumferential surface of the poking wheel 211 is provided with anti-skid protrusions which can increase the friction force between the poking wheel 211 and the hand of a user, thereby facilitating the poking.

The anti-skid bulges can be point-shaped bulges or strip-shaped bulges. In fig. 7, a stripe-shaped projection is used as the nonslip projection.

The transmission structure may include gears, and the number of the gears may be one or more.

Or, as shown in fig. 7, the transmission structure may further include a worm wheel 213 and a worm 212, the adjusting assembly further includes a limiting frame 240, the limiting frame 240 is provided with a limiting groove 242, and the rod portion 214 of the worm 212 extends into the limiting groove 242. Since the worm wheel 213 and the worm 212 are provided for transmission, the direction of transmission of force can be changed. Because the limiting frame 240 is arranged, the rotation of the worm 212 can be more stable.

Specifically, the stopper frame 240 includes a main body 241 and stopper arms 243 disposed on the main body 241, the stopper groove 242 is disposed on the stopper arms 243, the number of the stopper arms 243 may be one, two or more, and the number of the stopper arms 243 is preferably two. The arm 243 and the main body 241 may be integrally formed, or may be connected by welding, bonding, or bolting.

The worm 212 comprises a rod part 214 and a transmission part, the transmission part comprises spiral transmission teeth, the two ends of the transmission part are respectively provided with the rod part 214, and the rod part 214 on one side is connected with the thumb wheel 211. When the number of the limiting arms 243 is two, the two limiting arms 243 are respectively located at two sides of the transmission part, so that the rod parts 214 located at two sides of the transmission part have partial areas located in the limiting grooves 242, and the limiting grooves 242 limit the rod parts 214.

In one specific embodiment, the stop member 220 is provided with a first stop tooth 216 distributed annularly, and the end face of the thumb wheel 211 facing the stop member 220 is provided with a second stop tooth 221 distributed annularly, the first stop tooth 216 being capable of meshing with the second stop tooth 221. When the stopper 220 moves closer to the dial wheel 211, the distance between the first stopping tooth 216 and the second stopping tooth 221 gradually decreases, the first stopping tooth 216 is inserted into the gap between the second stopping teeth 221, and finally, the first stopping tooth 216 is located in the gap between the adjacent second stopping teeth 221, the second stopping tooth 221 is located in the gap between the adjacent first stopping teeth 216, and the first stopping tooth 216 is engaged with the second stopping teeth 221. Since the stop member 220 cannot rotate, the thumb wheel 211 cannot rotate relative to the stop member 220, i.e., the stop member 220 fixes the thumb wheel 211. Since the dial wheel 211 cannot rotate, the optical axis angle of the lens 102 is fixed.

After the stopper 220 is engaged with the dial wheel 211, the stopper 220 may be further fixed. Specifically, the fixing may be performed using the set bolt 223. Preferably, the stopper 220 is provided with a long hole, and the stopper 220 further includes a positioning bolt 223, and the positioning bolt 223 can pass through the long hole.

The lens 102 can be applied to a monitoring device such as a car recorder, and when the lens 102 is mounted on the housing 103 of the monitoring device, as shown in fig. 6, the angle adjusting device is also mounted inside the housing 103 along with the lens 102, and a partial region of the dial 211 and a partial region of the stopper 220 in the angle adjusting device are extended out of the housing 103 for adjustment and fixation.

The stopping member 220 and the housing 103 of the monitoring device may be installed in a sliding fit manner, that is, a sliding groove is provided on the inner side of the housing 103, a partial region of the stopping member 220 extends into the sliding groove, the stopping member 220 can move along the sliding groove, and the sliding groove plays a role in limiting and guiding the stopping member 220.

The lens 102 is mounted in the protective cover 232 of the connecting member 230, and is mounted inside the housing 103 through the protective cover 232, in order to facilitate the mounting of the protective cover 232 in the housing 103, a first connecting shaft 231 and a second connecting shaft 233 are respectively arranged on two opposite sides of the outer side surface of the protective cover 232, the first connecting shaft 231 and the second connecting shaft 233 are coaxially arranged, a mounting seat 252 is arranged in the housing 103, two notches 253 are arranged on the mounting seat 252, the first connecting shaft 231 extends out of one notch 253 on the mounting seat 252, and the second connecting shaft 233 extends out of the other notch 253 on the mounting seat 252. The two notches 253 limit the first connecting shaft 231 and the second connecting shaft 233 respectively. The first connecting shaft 231 is connected with a fixture block 234, an insertion hole 217 is formed in the axis of the worm wheel 213, the insertion hole 217 is a rectangular hole, the fixture block 234 is of a cubic structure, and the fixture block 234 extends into the insertion hole 217, so that the worm wheel 213 can drive the fixture block 234 to rotate, and the connecting piece 230 is further driven to rotate. The end of the second connecting shaft 233 extending out of the gap 253 is provided with a limiting block 235, and the limiting block 235 can prevent the second connecting shaft 233 from moving towards the inner side of the mounting seat 252, so as to limit the connecting member 230.

Referring to fig. 1, the present embodiment also provides a lens angle calibration method, applying the lens angle calibration system, where the lens angle calibration method includes:

step S11, connecting the first clamping structure of the surveying instrument with the lens 102, and making the first detection line of the first level bar 101 parallel to the first reference line of the lens 102, the first reference line being parallel to the optical axis of the lens 102; specifically, the first clamping structure is detachably connected to the lens 102. The first holding structure and the lens 102 may be connected directly or through a sleeve structure 106.

In step S12, it is determined whether the first detection line of the measuring instrument is parallel to the horizontal plane through the first level bar 101. Specifically, when first level 101 is a level having a bubble, it can be determined whether the first measurement line is parallel to the horizontal plane by observing the position of the bubble.

Step S13, if the first detection line is not parallel to the horizontal plane, the lens 102 is adjusted by the angle adjustment device, and the lens 102 drives the measuring instrument to swing to change the angle between the first detection line and the horizontal plane until the first detection line is parallel to the horizontal plane.

Specifically, since the lens 102 is connected to the first clamping structure, and the first clamping structure is connected to the first level 101, when the lens 102 is driven by the angle adjustment device to deflect, the lens 102 drives the first level 101 to deflect through the first clamping structure, so that the position of the bubble on the first level 101 changes, whether the first level 101 swings in a direction parallel to the horizontal plane or not can be determined through the moving direction of the bubble, and the first detection line of the first level 101 can be timely observed when being parallel to the horizontal plane, and the angle of the lens 102 stops being continuously adjusted.

Further, the method is carried out. When the angle of the lens 102 is adjusted by the angle adjusting device, the angle adjusting device specifically includes: the stop member 220 is first separated from the adjustment assembly, and then the lens 102 is rotated by the adjustment assembly. When the adjusting assembly is driven manually, the dial wheel 211 can be manually shifted, and the dial wheel 211 drives the connecting member 230 to rotate through the transmission mechanism, so as to drive the lens 102 and the measuring instrument to rotate.

Through the above steps, the optical axis of the lens 102 can be made parallel to the horizontal plane.

Further, when the first detection line is parallel to the horizontal plane, the lens 102 is fixed by the angle adjusting device, so that the angle between the first reference line of the lens 102 and the horizontal plane is fixed. The arrangement is such that the angle between the first reference line of the lens 102 and the horizontal plane does not change after adjustment, i.e. the lens 102 is fixed to a position where the first reference line is parallel to the horizontal plane. Specifically, after the adjustment is completed, the stop member 220 is contacted with the adjustment assembly to fix the adjustment assembly, so that the adjustment assembly cannot rotate, and the lens 102 cannot be driven to rotate, thereby fixing the angle between the optical axis of the lens 102 and the horizontal plane.

Before the adjustment, the surveying instrument is connected with the lens 102, and after the adjustment, the following steps are included:

In step S14, when the first detection line is parallel to the horizontal plane, the surveying instrument is separated from the lens 102.

Because the lens 102 is detachably connected to the first clamping structure of the measuring instrument, the measuring instrument is installed only when the angle of the lens 102 needs to be adjusted (i.e., the first clamping structure is connected to the lens 102), and after the adjustment is completed, the measuring instrument is detached from the lens 102 (i.e., the first clamping structure is separated from the lens 102). That is, the meter need not be always connected to the lens 102.

Second embodiment

The lens angle calibration system provided in this embodiment is further improved over the lens angle calibration system provided in the first embodiment. The technical content disclosed in the first embodiment is not described repeatedly, and the content disclosed in the first embodiment also belongs to the content disclosed in the present embodiment.

In this embodiment, the lens has a second reference line, the second reference line is located at the same horizontal plane as the first reference line, and the second reference line and the first reference line are distributed in a cross manner.

As shown in fig. 4 and 5, in order to facilitate the determination of whether the second reference line is horizontal, a second level 107 is further provided on the surveying instrument, the second level 107 is connected to the first clamping structure, and the second level 107 is provided with a second detection line.

Second level 107 may be identical in construction to first level 101, differing only in the direction of placement. That is, the second level 107 may include a bubble, and the movable range of the bubble, that is, the range indicated by the second measurement line, determines whether the second measurement line is in a horizontal state by the position of the bubble, and if the second measurement line is in a horizontal state, it indicates that the second reference line horizontal to the second measurement line is in a horizontal state.

In a preferred embodiment, second level 107 is connected to the first clamping structure by a second clamping structure comprising a base 108 and a clamping frame mounted on base 108, second level 107 is mounted on base 108, and base 108 is connected to the first clamping structure.

Since the second clamping structure is connected to the first clamping structure, both the first level 101 and the second level 107 deflect during the swinging of the lens 102.

When the angle between the second reference line of the lens 102 and the horizontal plane is adjusted, an angle adjusting device may also be used for adjustment, a first adjusting mechanism in the angle adjusting device is used for adjusting the angle between the first reference line and the horizontal plane, and then the angle adjusting device may also be used for adjusting the angle between the second reference line and the horizontal plane, specifically, the first adjusting mechanism and the lens 102 are both installed in one housing, and the second adjusting mechanism may have the same structure as the first adjusting mechanism, except that the connecting member 230 of the first adjusting mechanism is directly connected with the lens 102, and the connecting member 230 of the second adjusting mechanism is connected with the housing, so as to synchronously change the angle between the first adjusting mechanism and the lens 102, and avoid affecting the relative angle between the first adjusting mechanism and the lens 102.

Since the lens 102 is mounted in the housing 103 of the monitoring device, the housing may be the housing 103 of the monitoring device, that is, the angle of the lens 102 is changed by changing the angle of the whole monitoring device, so as to change the angle between the second reference line of the lens 102 and the horizontal plane. At this time, the second clamping structure is clamped to the housing 103.

Specifically, the second clamping structure includes a base 108 and an upright plate 109, the second level 107 is installed on the base 108, the base 108 is connected to the first clamping structure, the upright plates 109 are located at two ends of the base 108, and the upright plates 109 are perpendicular to the base 108, so as to connect the first clamping structure to the lens 102, the housing 103 is located in an area between the two upright plates 109, and the two upright plates 109 are clamped at two sides of the housing 103.

Alternatively, the second adjusting mechanism may not be used, and only the second level 107 may be used to detect and control the installation process of the lens 102. The mounting surface 110 is arranged on the outer side of the shell 103, during mounting, whether the shell 103 is mounted in a horizontal state can be detected through a level bubble on the second horizontal rod 107 so as to judge whether the lens 102 can be mounted in the horizontal position, and if the shell 103 is not mounted in the horizontal state, the angle of the shell 103 is adjusted by an operator, so that the shell 103 can be mounted horizontally.

The measuring device in the embodiment is an improvement on the basis of the first embodiment, the technical content disclosed in the first embodiment is not described repeatedly, and the content disclosed in the first embodiment also belongs to the content disclosed in the present embodiment.

In the lens angle calibration method provided in this embodiment, after the surveying instrument is connected to the lens 102, the second detection line of the surveying instrument is parallel to the second reference line of the lens 102, that is, after the surveying instrument is connected to the lens 102, on one hand, the first detection line of the first level 101 is parallel to the first reference line of the lens 102, and on the other hand, the second detection line of the second level 107 is parallel to the second reference line.

Since the second detection line of the surveying instrument is parallel to the second reference line of the lens 102, whether the second reference line of the lens 102 is parallel to the horizontal plane can be determined through the second detection line of the surveying instrument. This step may be performed before or after the adjustment of the first reference line is performed.

Preferably, the angle adjustment corresponding to the second reference line is performed after the angle adjustment corresponding to the first reference line.

As shown in fig. 2, the method provided in this embodiment specifically includes:

in step S21, the first clamping structure of the surveying instrument is connected to the lens 102, and the first detection line of the first level bar 101 is parallel to the first reference line of the lens 102, the first reference line is parallel to the optical axis of the lens 102, and the second detection line of the second level bar 107 is parallel to the second reference line of the lens 102.

S22, it is determined whether the first detection line is parallel to the horizontal plane by the first level bar 101.

And S23, if the first detection line is not parallel to the horizontal plane, adjusting the lens 102 through the angle adjusting device, and driving the measuring instrument to swing by the lens 102 so as to change the angle between the first detection line and the horizontal plane until the first detection line is parallel to the horizontal plane.

S24, it is determined whether the second detection line is parallel to the horizontal plane by the second level bar 107.

And S25, if the second detection line is not parallel to the horizontal plane, adjusting the lens 102 through the angle adjusting device, and driving the measuring instrument to swing by the lens 102 so as to change the angle between the second detection line and the horizontal plane until the second detection line is parallel to the horizontal plane.

S26, when the first detection line is parallel to the horizontal plane and the second detection line is parallel to the horizontal plane, the measuring apparatus is separated from the lens 102.

Because first level bar 101 and second level bar 107 all link to each other with first clamping structure, camera lens 102 links to each other with first clamping structure, therefore in the in-process of carrying out angle adjustment to camera lens 102, first level bar 101 and second level bar 107 all swing along with camera lens 102, then at the in-process of the angle of adjustment camera lens 102, can observe whether first detection line is parallel with the horizontal plane through first level bar 101 simultaneously, and observe whether second detection line is parallel with the horizontal plane through second level bar 107. Thereby avoiding affecting the levelness in one direction during calibration of the levelness in the other direction.

Compared with the method of the first embodiment, the method provided by the present embodiment adds the adjustment of the second reference line, so that the second reference line of the lens 102 is in a horizontal state after the adjustment.

Before the adjustment, the lens 102 is connected with the measuring instrument, and after the first reference line and the second reference line are adjusted, the lens 102 is separated from the measuring instrument.

In an aspect of the present embodiment, the first reference line is an optical axis of the lens 102, the second reference line is located on the same plane as the first reference line, and the second reference line is perpendicular to the first reference line.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.