CN110954890A - Device for acquiring coordinate of registration point of foundation laser radar - Google Patents
Device for acquiring coordinate of registration point of foundation laser radar Download PDFInfo
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- CN110954890A CN110954890A CN201911300140.XA CN201911300140A CN110954890A CN 110954890 A CN110954890 A CN 110954890A CN 201911300140 A CN201911300140 A CN 201911300140A CN 110954890 A CN110954890 A CN 110954890A
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- 229910000831 Steel Inorganic materials 0.000 claims abstract description 17
- 239000010959 steel Substances 0.000 claims abstract description 17
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 3
- 229910052782 aluminium Inorganic materials 0.000 claims description 3
- 230000005484 gravity Effects 0.000 claims description 3
- 229910001220 stainless steel Inorganic materials 0.000 claims description 3
- 239000010935 stainless steel Substances 0.000 claims description 3
- 238000005259 measurement Methods 0.000 description 7
- 238000000034 method Methods 0.000 description 4
- 238000010276 construction Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 238000001514 detection method Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 210000000481 breast Anatomy 0.000 description 1
- 238000005094 computer simulation Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 230000004083 survival effect Effects 0.000 description 1
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
- G01S7/48—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S17/00
- G01S7/497—Means for monitoring or calibrating
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
- G01S7/48—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S17/00
- G01S7/481—Constructional features, e.g. arrangements of optical elements
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Optical Radar Systems And Details Thereof (AREA)
Abstract
The invention discloses a device for acquiring the coordinate of a registration point of a foundation laser radar, which comprises a top prism, a reflecting ball, a base and a foot rest, wherein the top prism is arranged on the top prism; the top of the foot rest is fixed with a base, the top of the base is connected with the reflecting ball, and the top prism is fixed at the top of the reflecting ball; a steel pipe is accommodated in the reflecting ball along the vertical direction, and the upper end and the lower end of the steel pipe respectively extend to the outside of the reflecting ball; the lower end of the steel pipe is a groove, an internal thread is arranged in the groove, the upper end of the steel pipe is a cylindrical bulge, and an external thread is arranged on the bulge; the groove is matched with the connecting column on the base to realize the connection of the reflecting ball and the base; the cylindrical protrusion is in threaded connection with the bottom of the top prism, so that the top prism is fixedly connected with the reflecting ball.
Description
Technical Field
The invention belongs to the technical field of laser radar measuring devices, and particularly relates to a device for acquiring coordinates of a registration point of a foundation laser radar.
Background
The forest not only can provide material resources in human survival and social development, but also has an important role in maintaining ecological civilization construction. In recent years, ecological environment is seriously damaged, the ecological effect of trees is gradually highlighted, and more students pay attention to the ecological effect. Lidar (light Detection And ranging) technology is an active remote sensing technology that has been rapidly developed in recent 20 years. Different from a passive optical remote sensing working mechanism, the LiDAR can effectively detect the spatial structure and the terrain of forest vegetation, is successfully applied to quantitative measurement and inversion of forest parameters, particularly has the detection capability on the vertical structure of the forest, and has the advantage that the traditional optical remote sensing data is difficult to compare with. The ground-based laser radar TLS (seismic laser scanning) has the capability of detecting the three-dimensional scene in the forest, and can provide a quick, nondestructive and full-automatic mode for acquiring forest investigation factors, such as the position of a trunk, the diameter at breast height, the height of a tree, the size of a crown and the like. TLS also enables fine canopy substructure to be obtained. In addition, the ground laser radar also has important functions in the directions of vegetation coverage, building three-dimensional simulation modeling and the like.
Practice and research show that: there are still some problems in using ground-based lidar to invert forest parameters and model them three-dimensionally. When a forest is used for field operation, relevant data which can be provided on the spot is often insufficient to support the conditions of field operation, and when a ground-based radar is used for operation, the relevant problems of orientation and registration are difficult to realize in forests and other complex environments, so that great limitation is brought to the operation, and the measurement progress and the achievement precision are restricted to a certain extent.
In actual operation, an artificial mark is generally used as an image control point, a black and white phase plane is conventionally used as the artificial mark, and a total station direct measurement and angle measurement forward intersection method is generally used when acquiring the target center coordinates. However, there are major problems in the actual process:
when the target without the prism is measured, the precision is often very low, and the influence factors of weather and environment are large, and the measuring distance of the method is limited, so that the requirement in practical application is difficult to meet. The method of angular intersection is even more inappropriate in such an environment, and it requires two known control points for installation and good visibility conditions, so that it is also difficult to meet the requirements of actual operation.
Disclosure of Invention
The present invention is directed to solve or improve the above-mentioned problems, and an object of the present invention is to provide an apparatus for obtaining coordinates of a ground-based lidar registration point.
In order to achieve the purpose, the invention adopts the technical scheme that:
a device for acquiring the coordinate of a registration point of a foundation laser radar comprises a top prism, a reflecting ball, a base and a foot rest; the top of the foot rest is fixed with a base, the top of the base is connected with the reflecting ball, and the top prism is fixed at the top of the reflecting ball;
a steel pipe is accommodated in the reflecting ball along the vertical direction, and the upper end and the lower end of the steel pipe respectively extend to the outside of the reflecting ball; the lower end of the steel pipe is a groove, an internal thread is arranged in the groove, the upper end of the steel pipe is a cylindrical bulge, and an external thread is arranged on the bulge; the groove is matched with the connecting column on the base to realize the connection of the reflecting ball and the base; the cylindrical protrusion is in threaded connection with the bottom of the top prism, so that the top prism is fixedly connected with the reflecting ball.
Preferably, the reflective sphere is a hollow sphere.
Preferably, the material of the reflecting ball is aluminum or stainless steel.
Preferably, the surface of the reflecting ball is pasted with a reflecting label paper.
Preferably, the centers of gravity of the top prism, the reflecting ball, the base and the foot rest are all on the same vertical line.
Preferably, the level gauge is embedded on the boss of the base.
The device for acquiring the coordinate of the alignment point of the foundation laser radar has the following beneficial effects:
the device can assist the foundation laser radar in absolute positioning during single-station measurement and also assist the foundation laser radar in multi-station registration, and all parts of the device are easy to manufacture and low in construction cost; the device stability is good, and the data precision that obtains is high, can realize the many function combination operation, can not only assume the reflection ball on the base, can also carry out the instrument configuration according to actual demand, and the installation is simple, also comparatively easy in the actual operation.
Drawings
Fig. 1 is a block diagram of an apparatus for acquiring coordinates of a ground-based lidar registration point.
Fig. 2 is a structure diagram of a reflection sphere applied to an apparatus for acquiring coordinates of a registration point of a ground-based lidar.
Wherein, 1, a top prism is arranged; 2. a reflective sphere; 3. a base; 4. a foot rest; 5. a steel pipe; 6. a level gauge; 7. a boss; 8. connecting columns; 9. a protrusion; 10. and (4) a groove.
Detailed Description
The following description of the embodiments of the present invention is provided to facilitate the understanding of the present invention by those skilled in the art, but it should be understood that the present invention is not limited to the scope of the embodiments, and it will be apparent to those skilled in the art that various changes may be made without departing from the spirit and scope of the invention as defined and defined in the appended claims, and all matters produced by the invention using the inventive concept are protected.
According to an embodiment of the present application, referring to fig. 1 and 2, the apparatus for acquiring coordinates of a registration point of a foundation lidar according to the present solution includes a top prism 1, a reflective sphere 2, a base 3 and a foot rest 4, wherein the base 3 is fixed on the top of the foot rest 4, the top of the base 3 is connected with the reflective sphere 2, and the top prism 1 is fixed on the top of the reflective sphere 2.
Wherein, foot rest 4 plays stabilizing effect in order to ensure the operation precision, and base 3 plays the fixed action to guarantee reflection ball 2 and the level and the stability of putting a prism 1, the effect of reflection ball 2 is to carry out the focus location when ground lidar measures, puts a prism 1 and can determine the space coordinate of present point when using the total powerstation to measure, so that carry out single base station orientation and many base stations registration when ground lidar measures.
A steel pipe 5 is arranged in the reflecting ball 2 along the vertical direction, and the upper end and the lower end of the steel pipe 5 respectively extend to the outside of the reflecting ball 2.
The lower extreme of steel pipe 5 is recess 10, has seted up the internal thread in the recess 10, and 5 upper ends of steel pipe are cylindric arch 9, have seted up the external screw thread on the arch 9.
The groove 10 is in threaded connection with the connecting column 8 on the base 3 to realize the connection of the reflecting ball 2 and the base 3, and the cylindrical bulge 9 is in threaded connection with the bottom of the top prism 1 to realize the fixed connection of the top prism 1 and the reflecting ball 2.
The reflecting ball 2 is a hollow ball made of aluminum or stainless steel, and reflecting label paper is adhered to the surface of the reflecting ball 2.
The center of gravity of the top prism 1, the reflecting ball 2, the base 3 and the foot rest 4 are all on the same vertical line.
The level gauge 6 is embedded on the boss 7 of the base 3, the level of the base 3 can be ensured by the level bubble in the level gauge 6, and the vertical position of the base 3 can be ensured by an external centering device.
The working principle of the invention is as follows:
after the position where the image control points need to be arranged is determined, a tripod 4 is erected, meanwhile, the position of the horizontal direction and the position of the vertical direction are ensured by the mounting base 3 according to horizontal bubbles on the base 3 and the centering device, then the reflecting ball 2 is mounted, the horizontal direction and the centering are checked after the reflecting ball 2 is mounted, fine adjustment is carried out according to actual requirements to re-level and center, finally, the top prism 1 is mounted on the reflecting ball 2, after the top prism is fixed through screws, the horizontal direction and the centering are checked again and adjusted again, and after the measurement is finished, disassembly in a reverse order is carried out according to mounting steps.
The device can assist the foundation laser radar in absolute positioning during single-station measurement and also assist the foundation laser radar in multi-station registration, and all parts of the device are easy to manufacture and low in construction cost; the device stability is good, and the data precision that acquires is high, can realize the many function combination operation, can not only assume reflection ball 2 on the base 3, can also carry out the instrument configuration according to actual demand, and the installation is simple, also comparatively easily among the actual operation.
While the embodiments of the invention have been described in detail in connection with the accompanying drawings, it is not intended to limit the scope of the invention. Various modifications and changes may be made by those skilled in the art without inventive step within the scope of the appended claims.
Claims (6)
1. The utility model provides a be applied to device that obtains ground laser radar registration point coordinate which characterized in that: comprises a top prism, a reflecting ball, a base and a foot rest; the top of the foot rest is fixed with a base, the top of the base is connected with the reflecting ball, and the top-placing prism is fixed at the top of the reflecting ball;
a steel pipe is accommodated in the reflecting ball along the vertical direction, and the upper end and the lower end of the steel pipe respectively extend to the outside of the reflecting ball; the lower end of the steel pipe is a groove, an internal thread is arranged in the groove, the upper end of the steel pipe is a cylindrical bulge, and an external thread is arranged on the bulge; the groove is matched with the connecting column on the base to realize the connection of the reflecting ball and the base; the cylindrical protrusion is in threaded connection with the bottom of the top prism, so that the top prism is fixedly connected with the reflecting ball.
2. The device for obtaining coordinates of a ground-based lidar registration point of claim 1, wherein: the reflecting ball is a hollow ball.
3. The device for obtaining coordinates of a ground-based lidar registration point of claim 1, wherein: the reflecting ball is made of aluminum or stainless steel.
4. The device for obtaining coordinates of a ground-based lidar registration point of claim 1, wherein: and reflective label paper is pasted on the surface of the reflective ball.
5. The device for obtaining coordinates of a ground-based lidar registration point of claim 1, wherein: the gravity centers of the top prism, the reflecting ball, the base and the foot rest are all on the same vertical line.
6. The device for obtaining coordinates of a ground-based lidar registration point of claim 1, wherein: and a level gauge is embedded on the boss of the base.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911300140.XA CN110954890A (en) | 2019-12-16 | 2019-12-16 | Device for acquiring coordinate of registration point of foundation laser radar |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911300140.XA CN110954890A (en) | 2019-12-16 | 2019-12-16 | Device for acquiring coordinate of registration point of foundation laser radar |
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| Publication Number | Publication Date |
|---|---|
| CN110954890A true CN110954890A (en) | 2020-04-03 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201911300140.XA Pending CN110954890A (en) | 2019-12-16 | 2019-12-16 | Device for acquiring coordinate of registration point of foundation laser radar |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111595265A (en) * | 2020-06-01 | 2020-08-28 | 中铁二院工程集团有限责任公司 | Reflection target device for three-dimensional laser scanner and use method thereof |
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2019
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| US20190146061A1 (en) * | 2015-11-20 | 2019-05-16 | Texas Instruments Incorporated | Compact chip scale lidar solution |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111595265A (en) * | 2020-06-01 | 2020-08-28 | 中铁二院工程集团有限责任公司 | Reflection target device for three-dimensional laser scanner and use method thereof |
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Application publication date: 20200403 |