CN107741199A - A kind of multidirectional target of 3 D laser scanning - Google Patents
A kind of multidirectional target of 3 D laser scanning Download PDFInfo
- Publication number
- CN107741199A CN107741199A CN201711095370.8A CN201711095370A CN107741199A CN 107741199 A CN107741199 A CN 107741199A CN 201711095370 A CN201711095370 A CN 201711095370A CN 107741199 A CN107741199 A CN 107741199A
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- rotating shaft
- support frame
- reflecting plate
- target
- horizontal rotating
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- 239000000049 pigment Substances 0.000 claims description 8
- 238000013016 damping Methods 0.000 claims description 4
- 239000003292 glue Substances 0.000 claims description 4
- 238000003780 insertion Methods 0.000 claims description 3
- 230000037431 insertion Effects 0.000 claims description 3
- 239000002184 metal Substances 0.000 claims description 3
- 239000000758 substrate Substances 0.000 claims description 3
- 238000005516 engineering process Methods 0.000 abstract description 5
- 238000005259 measurement Methods 0.000 abstract description 5
- 210000000515 tooth Anatomy 0.000 description 5
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000002310 reflectometry Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000011514 reflex Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optical Radar Systems And Details Thereof (AREA)
Abstract
The present invention relates to laser scanning measurement technology, it is desirable to provide a kind of multidirectional target of 3 D laser scanning.The target includes reflecting plate, support frame, base and motor component.Reflecting plate is fixed in horizontal rotating shaft, and horizontal rotating shaft is flexibly connected with support frame so that reflecting plate can rotate freely around horizontal rotating shaft.Support frame is fixedly connected with vertical rotating shaft, and the latter is flexibly connected with base hood, reflecting plate is rotated freely with vertical rotating shaft.Meanwhile the positive and reverse rotation control circuit comprising wireless remote control receiving device, motor are installed on target.Under the driving of motor, reflecting plate can rotate freely rotating around 360 ° of horizontal rotating shaft and vertical rotating shaft, and adjustable extent is big.Rotary reflection plate is controlled using remote control, even after target fixation, laser is just penetrated target when different survey stations scan, improves the accuracy of Target Center positioning, and then improve three-dimensional laser point cloud coordinate transform precision and registration accuracy.
Description
Technical field
The present invention is on laser scanning measurement technology, more particularly to a kind of novel three-dimensional laser scanning target.
Background technology
Three-dimensional laser scanning technique is a kind of advanced stereoscan technology, and ground target is obtained by cordless
Subtle three-dimensional cloud data, target are as in the control point in Coordinate Conversion and point cloud in 3 D laser scanning
Tie point, by point cloud local coordinate transform to geodetic coordinates and it can realize that multistage point cloud accurately splices.
Existing target is broadly divided into two kinds of spherical target and plane target.The advantages of spherical target is can will be by any
The Points cloud Fitting that scanning direction obtains goes out Target Center, but cost is higher and inconvenient to carry.Plane target low cost, carry
It is convenient, but target installation back reflection plate direction is also uniquely fixed, and can not ensure that scanner can in two different survey station measurements
Face target, therefore Target Center point identification error is relatively large.Meanwhile the device is typically pacified in tunnel palisades higher position
Dress, when changing scan position, conventional equipment need to utilize and manually adjust target placement, and practical operation is more inconvenient.
The content of the invention
The technical problem to be solved in the present invention is to overcome deficiency of the prior art, there is provided a kind of 3 D laser scanning
Multidirectional target.Target can be just penetrated by adjusting target direction scanning laser when different survey stations scan, and in target
The heart remains that locus is constant during regulation.
To solve technical problem, solution of the invention is as follows：
There is provided a kind of 3 D laser scanning multidirectional target, including the reflecting plate for reflection laser, the target also include one
Individual vertical semi-circular support frame；The reflecting plate is rounded, and its both sides is loaded on two of support frame by horizontal rotating shaft respectively
Between end；Driven gear is fixed with one of end of horizontal rotating shaft, driven gear is intermeshed with driving gear；
Driving gear is fixed in the drive shaft of support frame motor, and support frame motor is then fixed on the side of support frame；
Base is provided with the lower section of support frame, base motor is fixed on base, is fixed with its drive shaft actively
Gear；Driving gear intermeshes with being located at the driven gear of vertical rotating shaft bottom, top and the support frame bottom of vertical rotating shaft
It is fixedly connected；Base is provided with a base hood (base motor and vertical rotating shaft are respectively positioned in base hood) that Open Side Down,
Its top sets through hole, and vertical rotating shaft is fixedly connected after passing through the through hole with support frame；Battery is also equipped with base, battery is by leading
Line is connected to base motor and support frame motor by a positive and reverse rotation control circuit respectively；
The vertical rotating shaft is mutually perpendicular to horizontal rotating shaft, and its axis joining overlaps with the reflecting plate front center of circle, is made anti-
Plate is penetrated when rotation is to any direction, the reflecting plate front center of circle is always positioned at space same point.
In the present invention, wireless remote control receiving device is equipped with the positive and reverse rotation control circuit.
In the present invention, the annexation of horizontal rotating shaft and support frame be it is following any one：
(1) horizontal rotating shaft is integral structure and reflecting plate is fixed on its middle part, or horizontal rotating shaft be split-type structural and
It is separately fixed at the both sides of reflecting plate；Reflecting plate both sides are stretched out at the both ends of horizontal rotating shaft, and wherein one end is inserted in support frame end
In counterbore, the other end is fixedly connected with driven gear after passing through the through hole of support frame end；Or
(2) horizontal rotating shaft has two sections；Wherein one section is fixed on support frame end, is provided with reflecting plate sidepiece and coordinates insertion to use
Counterbore；Another section of opposite side for being then fixed on reflecting plate, is fixedly connected driven after the through hole through support frame the other end
Gear；Or
(3) horizontal rotating shaft is integral structure and reflecting plate is fixed on its middle part, or horizontal rotating shaft be split-type structural and
It is separately fixed at the both sides of reflecting plate；Wherein, the part being connected with reflecting plate is tabular, in support frame end and reflecting plate sidepiece
Between part for bulk, part on the outside of bulk is shaft-like；One of them is shaft-like to stretch into the counterbore of support frame end, separately
Driven gear is fixedly connected with after one shaft-like through hole through support frame the other end.
It is the work with damping between the horizontal rotating shaft and support frame, between vertical rotating shaft and base hood in the present invention
Dynamic connection.
In the present invention, it is fixedly connected between the reflecting plate and horizontal rotating shaft by rivet or screw.
In the present invention, the base is provided with multiple round tube holes being used for through fixing glue.
In the present invention, the reflecting plate includes metal substrate and the pigment coat positioned at its front surface；The pigment applies
Coating is divided into 4 pieces of each 90 ° of sector regions and chequered with black and white arrangement by symmetrical centre of the reflecting plate center of circle, and each relative two
Block sector region has same color.
In the present invention, in two groups of meshing gears, driven gear is 5 with driving gear gearratio:1.
In the present invention, the side of support frame as described above sets rotating shaft cover, support frame as described above motor, driving gear, horizontal rotating shaft
End and driven gear be respectively positioned in rotating shaft cover.
Inventive principle describes：
Laser scanner target in the present invention is mainly by driving parts such as reflecting plate, support frame, base and motor
Composition.Reflecting plate front surface has black-and-white two color pigment coat, for providing clear target for scanner and can be accurately positioned
Target Center point.Reflecting plate is fixed in horizontal rotating shaft, and horizontal rotating shaft is flexibly connected with support frame so that reflecting plate can be around transverse direction
Rotating shaft rotates freely.Support frame is fixedly connected with vertical rotating shaft, and the latter is flexibly connected with base hood, reflecting plate is turned with vertical
Axle rotates freely.Meanwhile the portions such as the positive and reverse rotation control circuit comprising wireless remote control receiving device, motor are installed on target
Part, it can be regulated and controled by remote control remote operation.
Wherein, pigment coat is that black and white is alternate, with the near infrared band laser using three-dimensional laser scanner black
Difference in reflectivity on white dichromatism coat accurately identifies the center of circle.Reflecting plate can freely revolve around to rotating shaft and vertical 360 ° of rotating shaft
Turn, because vertical rotating shaft and horizontal rotating shaft are mutually perpendicular to, its axis joining overlaps with the reflecting plate front center of circle, reflecting plate is existed
When rotation is to any direction, scanner identification point is always positioned at the reflecting plate front surface center of circle, i.e. scanning recognition point is always positioned at sky
Between same point.Between horizontal rotating shaft and support frame, between vertical rotating shaft and base hood be being flexibly connected with damping, can make anti-
Plate posture is penetrated because of moment of torsion caused by deadweight and slight external interference not change.Base is provided with multiple be used for through fixing glue
Round tube hole, target can be fixed on palisades through round tube hole with rivet before scanning operation.
Compared with prior art, the beneficial effects of the invention are as follows：
(1) under the driving of motor, reflecting plate can rotate freely rotating around 360 ° of horizontal rotating shaft and vertical rotating shaft, adjustable
Adjusting range is big.
(2) by the wireless remote control receiving device being arranged in positive and reverse rotation control circuit, control and revolve using remote control
Turn reflecting plate.It even after target fixation, laser is just penetrated target when different survey stations scan, improve in target
The accuracy of heart positioning, and then improve three-dimensional laser point cloud coordinate transform precision and registration accuracy.
(3) present invention is simple in construction, is easy to carry；It is easy to make, cost is low, be advantageous to utilization and extention.
Brief description of the drawings
Fig. 1 is the front view of multidirectional target.
Fig. 2 is the rearview of multidirectional target in Fig. 1.
Fig. 3 is the side view of multidirectional target in Fig. 1.
Fig. 4 is the top view of multidirectional target in Fig. 1.
Fig. 5 is the use flow diagram of multidirectional target in Fig. 1.
Reference in figure is：1 horizontal rotating shaft；2 support frames；3 base hoods；4 bases；5 round tube holes；6 vertical rotating shafts；7
Reflecting plate；8 (horizontal rotating shaft) block positions；9 positive and reverse rotation control circuits；10 base motors；11 driving gears；12 driven tooths
Wheel；13 batteries；14 positive and reverse rotation control circuits；15 support frame motor；16 driving gears；17 driven gears, 18 rotating shaft covers.
Embodiment
The implementation of the present invention is described in detail below by specific embodiment.
Positive and reverse rotation control circuit and wireless remote control receiving device can be applied in the present invention, these are all highly developed show
There is technology, the present invention repeats no more its concrete structure or realization principle.
As shown in figure 1, the multidirectional target of 3 D laser scanning includes the circular reflector 7 for reflection laser, by temperature difference shape
The metal substrate and the pigment coat composition positioned at front surface to diminish.Pigment coat is using the reflecting plate center of circle as symmetrical centre point
4 pieces of each 90 ° of sector regions and chequered with black and white arrangement are segmented into, each two pieces of relative sector regions have same color, utilize
Black-and-white two color accurately determines home position to the difference in reflectivity of laser.
The both sides of reflecting plate 7 respectively by two ends of the activity of horizontal rotating shaft 1 loaded on vertical semi-circular support frame 2 it
Between；Driven gear 17 is fixed with one of end of horizontal rotating shaft 1, driven gear 17 is mutually nibbled with driving gear 16
Close；Driving gear 16 is fixed in the drive shaft of support frame motor 15, and support frame motor 15 is then fixed on the side of support frame 2
Face；Rotating shaft cover 18, support frame motor 15,17 equal position of driving gear 16, the end of horizontal rotating shaft 1 and driven gear are set outside it
In in rotating shaft cover 18.
Annexation between horizontal rotating shaft 1 and support frame 2 has a variety of implementations optional.The implementation of the present embodiment
It is：Horizontal rotating shaft 1 is split-type structural, is made up of left and right two parts, is separately fixed at the both sides (as shown in Figure 2) of reflecting plate 7；
Wherein, the part being connected with reflecting plate 7 is tabular, and the part between the end of support frame 2 and the sidepiece of reflecting plate 7 is block position
8, the Outboard Sections at block position are shaft-like (or only protuberance)；One of them shaft-like (or only protuberance) stretches into support
In the counterbore of the end of frame 2, driven gear 17 is fixedly connected with after another shaft-like through hole through the other end of support frame 2.Very
The horizontal rotating shaft 1 of integral structure can also be used in obvious the present embodiment, its tabular position is connected as a single entity for fixation reflex
Plate 7.It is fixedly connected between reflecting plate 7 and horizontal rotating shaft 1 by rivet or screw.Slot can also be set on block position 8 or is lacked
Mouthful, it is easy to position reflecting plate 7 when mounted, avoids shifting.
It is envisioned that the annexation between horizontal rotating shaft 1 and support frame 2 can also be following modes：Horizontal rotating shaft 1
It is the rod member of integral structure and reflecting plate 7 is fixed on its middle part, or horizontal rotating shaft 1 is the rod member of split-type structural and solid respectively
It is scheduled on the both sides of reflecting plate 7；The both sides of reflecting plate 7 are stretched out at the both ends of horizontal rotating shaft 1, and wherein one end is inserted in the heavy of the end of support frame 2
Kong Zhong, the other end are fixedly connected with driven gear 17 after passing through the through hole of the end of support frame 2；Or the horizontal rotating shaft 1 by rod member shape
It is divided into two sections；Wherein one section is fixed on the end of support frame 2, and the counterbore for coordinating insertion is provided with the sidepiece of reflecting plate 7；Another section
The opposite side of reflecting plate 7 is then fixed on, driven gear 17 is fixedly connected with after the through hole through the other end of support frame 2.In a word,
Corresponding connected mode can be selected to realize appropriate technical solution as needed.
Base 4 is provided with the lower section of support frame 2, base 4 is provided with multiple round tube holes 5 being used for through fixing glue.Use
Target is tightly fastened in measurement body by rivet through round tube hole 5, target can be avoided to be disturbed and rocked by external condition, and from installing
It is simple and quick, it is equally applicable for a wide range of complex site in field.Base motor 10 is fixed on base 4, in its drive shaft
It is fixed with driving gear 11；Driving gear 11 intermeshes with being located at the driven gear 12 of the vertical bottom of rotating shaft 6, vertical rotating shaft
6 top is fixedly connected with the bottom of support frame 2；Base 4 is provided with a base hood 3 that Open Side Down, and its top sets through hole, erects
It is fixedly connected after passing through through hole to rotating shaft 6 with support frame 2；Vertical rotating shaft 6 is mutually perpendicular to horizontal rotating shaft 1, its axis joining
Overlapped with the center of circle of reflecting plate 7, making reflecting plate 7, it is same that the 7 positive center of circle of reflecting plate is always positioned at space when rotation is to any direction
A bit.Ensure during laser scanning, home position identification is accurate constant when reflecting plate 7 rotates, and improves scanning element cloud seat
Mark transduced precision and splicing precision.It is with damping between horizontal rotating shaft 1 and support frame 2, between vertical rotating shaft 6 and base hood 3
Flexible connection.
Battery 13 is also equipped with base 4, battery 13 connects positive and reverse rotation control circuit 9 and rotating control by wire respectively
Circuit 14, positive and reverse rotation control circuit 9 and positive and reverse rotation control circuit 14 are connected to base motor 10 and support by wire respectively
Frame motor 15.In positive and reverse rotation control circuit 9,14, wireless remote control receiving device is respectively provided with, can be by receiving remote controller signal
Motor rotation is controlled, and motor power is delivered in rotary shaft by gear, and then uses remote control
Reflecting plate 7 is controlled to carry out the purpose of all-directional rotation.
It is 18 to select the number of teeth of driving gear 11, and the number of teeth of driven gear 12 is 90, gearratio 5:1；The number of teeth of driving gear 16
For 18, the number of teeth of driven gear 17 is 90, gearratio 5:1.Such gearratio can realize the slowing effect of countershaft rotation, just
Adjusted in control.Meanwhile battery 13 can provide electric energy for settings such as two motor, positive and reverse rotation control circuits simultaneously.
Actual scanning generally requires multistation measurement, is laid between adjacent two station and is no less than three targets of the present invention, supplied
Later data splicing uses.Adjusted before scanning by rotating, make the positive face scanner of reflecting plate 7, obtained using total station survey
To the front surface center position coordinates of reflecting plate 7；The reflecting plate centre coordinate measured using total powerstation, realize 3 D laser scanning point
The matching and conversion of cloud.
Use of this target during the 3 D laser scanning of mountain tunnel is as shown in Figure 5
1st, before scanning, base 4 is tightly fixed on palisades through round tube hole 5 using rivet.
2nd, in such as Fig. 5 flow 1, after scanner is set up, regulation reflecting plate 7 make its around horizontal rotating shaft 1 with it is vertical
The rotation of rotating shaft 6 is until the front surface face scanner of reflecting plate 7, is then scanned identification.
3rd, in such as Fig. 5 flow 2, scanner is moved into next survey station, now scanned, laser is general by the directive target back side
Logical target will be unable to measure.Of the invention then adjustable reflecting plate 7 make it around horizontal rotating shaft 1 and vertical rotating shaft 6 rotation until
Target front face scanner again, can avoid rearranging target.
4th, simultaneously as horizontal rotating shaft 1 intersects at the 7 positive center of circle of reflecting plate with the vertical extended line of rotating shaft 6 so that in flow
1 is constant with the absolute spatial position holding in the center of circle of reflecting plate 7 in flow 2, ensures incidence angle in the reasonable scope, improves in target
The accuracy of identification of the heart, and then ensure the degree of accuracy of Registration of Measuring Data and splicing.
Claims (9)
1. a kind of multidirectional target of 3 D laser scanning, including the reflecting plate for reflection laser, it is characterised in that the target also wraps
Include a vertical semi-circular support frame；The reflecting plate is rounded, and its both sides is loaded on support frame by horizontal rotating shaft respectively
Between two ends；Driven gear is fixed with one of end of horizontal rotating shaft, driven gear is mutual with driving gear
Engagement；Driving gear is fixed in the drive shaft of support frame motor, and support frame motor is then fixed on the side of support frame；
Base is provided with the lower section of support frame, base motor is fixed on base, and driving gear is fixed with its drive shaft；
Driving gear is intermeshed with being located at the driven gear of vertical rotating shaft bottom, and the top of vertical rotating shaft is fixed with support frame bottom to be connected
Connect；Base is provided with a base hood that Open Side Down, and its top sets through hole, and vertical rotating shaft is fixed after passing through through hole with support frame
Connection；Battery is also equipped with base, battery is connected to base motor by a positive and reverse rotation control circuit respectively by wire
With support frame motor；
The vertical rotating shaft is mutually perpendicular to horizontal rotating shaft, and its axis joining overlaps with the reflecting plate front center of circle, makes reflecting plate
When rotation is to any direction, the reflecting plate front center of circle is always positioned at space same point.
2. the multidirectional target of 3 D laser scanning according to claim 1, it is characterised in that in the positive and reverse rotation control circuit
It is equipped with wireless remote control receiving device.
3. the multidirectional target of 3 D laser scanning according to claim 1, it is characterised in that the company of horizontal rotating shaft and support frame
The relation of connecing be it is following any one：
(1) horizontal rotating shaft is integral structure and reflecting plate is fixed on its middle part, or horizontal rotating shaft is split-type structural and difference
It is fixed on the both sides of reflecting plate；Reflecting plate both sides are stretched out at the both ends of horizontal rotating shaft, and wherein one end is inserted in the counterbore of support frame end
In, the other end is fixedly connected with driven gear after passing through the through hole of support frame end；Or
(2) horizontal rotating shaft has two sections；Wherein one section is fixed on support frame end, is provided with reflecting plate sidepiece and coordinates the heavy of insertion
Hole；Another section of opposite side for being then fixed on reflecting plate, driven gear is fixedly connected with after the through hole through support frame the other end；
Or
(3) horizontal rotating shaft is integral structure and reflecting plate is fixed on its middle part, or horizontal rotating shaft is split-type structural and difference
It is fixed on the both sides of reflecting plate；Wherein, the part being connected with reflecting plate is tabular, between support frame end and reflecting plate sidepiece
Part for bulk, part on the outside of bulk is shaft-like；One of them is shaft-like to stretch into the counterbore of support frame end, another
Driven gear is fixedly connected with after the shaft-like through hole through support frame the other end.
4. the multidirectional target of 3 D laser scanning according to claim 1, it is characterised in that the horizontal rotating shaft and support frame
Between, between vertical rotating shaft and base hood be being flexibly connected with damping.
5. the multidirectional target of 3 D laser scanning according to claim 1, it is characterised in that the reflecting plate and horizontal rotating shaft
Between be fixedly connected by rivet or screw.
6. the multidirectional target of 3 D laser scanning according to claim 1, it is characterised in that the base is provided with multiple use
In the round tube hole through fixing glue.
7. the multidirectional target of 3 D laser scanning according to claim 1, it is characterised in that the reflecting plate includes Metal Substrate
Plate and the pigment coat positioned at its front surface；The pigment coat is divided into 4 pieces respectively by symmetrical centre of the reflecting plate center of circle
90 ° of sector region and chequered with black and white arrangement, respective two pieces of relative sector regions have same color.
8. the multidirectional target of 3 D laser scanning according to claim 1, it is characterised in that in two groups of meshing gears,
Driven gear is 5 with driving gear gearratio:1.
9. the multidirectional target of 3 D laser scanning according to claim 1, it is characterised in that the side of support frame as described above, which is set, to be turned
Axle cover, support frame as described above motor, driving gear, the end of horizontal rotating shaft and driven gear are respectively positioned in rotating shaft cover.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711095370.8A CN107741199A (en) | 2017-11-09 | 2017-11-09 | A kind of multidirectional target of 3 D laser scanning |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711095370.8A CN107741199A (en) | 2017-11-09 | 2017-11-09 | A kind of multidirectional target of 3 D laser scanning |
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| Publication Number | Publication Date |
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| CN107741199A true CN107741199A (en) | 2018-02-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711095370.8A Pending CN107741199A (en) | 2017-11-09 | 2017-11-09 | A kind of multidirectional target of 3 D laser scanning |
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Cited By (7)
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| CN108919290A (en) * | 2018-08-10 | 2018-11-30 | 深圳市国测测绘技术有限公司 | A kind of laser ranging baffle |
| CN108981564A (en) * | 2018-04-25 | 2018-12-11 | 上海大学 | A kind of light pen vision target based on active principle of luminosity |
| CN109323656A (en) * | 2018-11-24 | 2019-02-12 | 上海勘察设计研究院(集团)有限公司 | A kind of novel target and its extraction algorithm for point cloud registering |
| CN109870740A (en) * | 2018-12-29 | 2019-06-11 | 清华大学 | Millimeter wave/THz wave imaging device and its reflecting plate regulating device |
| CN111981978A (en) * | 2020-07-04 | 2020-11-24 | 东南大学 | Auxiliary target set for large-span bridge space linear three-dimensional laser scanning |
| CN112050750A (en) * | 2020-09-10 | 2020-12-08 | 中铁宝桥集团有限公司 | Formula three-dimensional laser scanning mark target is inhaled to magnetism |
| CN115077674A (en) * | 2021-03-15 | 2022-09-20 | 北京智科车联科技有限公司 | Vehicle load detection device, vehicle, and vehicle load detection method |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108981564A (en) * | 2018-04-25 | 2018-12-11 | 上海大学 | A kind of light pen vision target based on active principle of luminosity |
| CN108919290A (en) * | 2018-08-10 | 2018-11-30 | 深圳市国测测绘技术有限公司 | A kind of laser ranging baffle |
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| CN109323656B (en) * | 2018-11-24 | 2024-06-21 | 上海勘察设计研究院(集团)股份有限公司 | Novel target for point cloud registration and extraction algorithm thereof |
| CN109870740A (en) * | 2018-12-29 | 2019-06-11 | 清华大学 | Millimeter wave/THz wave imaging device and its reflecting plate regulating device |
| CN109870740B (en) * | 2018-12-29 | 2024-03-01 | 清华大学 | Millimeter wave/terahertz wave imaging device and reflecting plate adjusting device thereof |
| CN111981978A (en) * | 2020-07-04 | 2020-11-24 | 东南大学 | Auxiliary target set for large-span bridge space linear three-dimensional laser scanning |
| CN111981978B (en) * | 2020-07-04 | 2022-03-11 | 东南大学 | Auxiliary target set for large-span bridge space linear three-dimensional laser scanning |
| CN112050750A (en) * | 2020-09-10 | 2020-12-08 | 中铁宝桥集团有限公司 | Formula three-dimensional laser scanning mark target is inhaled to magnetism |
| CN115077674A (en) * | 2021-03-15 | 2022-09-20 | 北京智科车联科技有限公司 | Vehicle load detection device, vehicle, and vehicle load detection method |
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