CN205748383U - A kind of target apparatus being applicable to rail track operation maintenance measurement - Google Patents
A kind of target apparatus being applicable to rail track operation maintenance measurement Download PDFInfo
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- CN205748383U CN205748383U CN201620462604.2U CN201620462604U CN205748383U CN 205748383 U CN205748383 U CN 205748383U CN 201620462604 U CN201620462604 U CN 201620462604U CN 205748383 U CN205748383 U CN 205748383U
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Abstract
This utility model relates to a kind of target apparatus being applicable to rail track operation maintenance measurement.When utilizing vehicle-mounted LiDAR scanning system to carry out rail track repetition measurement, the cloud data of higher precision need to be obtained.Target box body of the present utility model is rigidity tetrahedron, including vertical back of the body driving face, downward-sloping target end face and vertical driving face, face and face of vertically driving a vehicle；Target anchor point is end face, driving face, face and the intersection point in vertical face of driving a vehicle；Select suitable target size, target installation position according to field working conditions during use and dispose direction.After vehicle-mounted LiDAR scanning survey, extract the coordinate of target anchor point according to the cloud data on target and carry out a cloud segmentation constraint adjustment, thus improving a cloud precision；Target anchor point is designed as obtaining the intersection point in three target faces of scanning element, overcomes the problem that the accuracy at plane target drone control point is easily affected by multiple reflection effect, improve the precision extracting target control point according to cloud data.
Description
Technical field
This utility model belongs to railway construction technical field of mapping, is specifically related to a kind of target apparatus being applicable to rail track operation maintenance measurement.
Background technology
Along with being greatly improved of the China railways speed of service and frequency, to train travel safe, steadily have higher requirement.The maintenance of railway in operation is the guarantee of safety of railway operation, and railway operation safeguards that measurement is then the foundation of railway maintenance maintenance.
During using vehicle-mounted three-dimensional laser radar (LiDAR) technology to carry out rail track operation maintenance measurement; owing to Along Railway is with a varied topography; train driving is in the area such as mountain area, Close Tunnel; easily cause Vehicle-borne Laser Scanning system-satellite losing lock; the TT&C system simultaneously buried underground on railway can produce the normal work of electromagnetic interference influence Inertial Measurement Unit IMU; POS data exception or the problem of inertial navigation system drift of vehicle-mounted LiDAR system occur; and then affecting the precision that POS resolves so that the cloud data precision of acquisition is relatively low.In order to obtain the cloud data meeting route survey specification required precision, need a cloud carries out segmentation constraint adjustment,Improve the precision of cloud data.
Summary of the invention
The purpose of this utility model is to provide and a kind of is applicable to the target apparatus that rail track operation maintenance is measured, and according to target anchor point extraction coordinate in a cloud and Measured Coordinates, calculates conversion parameter and corrects measurement pointcloud, thus improve a cloud precision.
The technical scheme that this utility model is used is:
A kind of target apparatus being applicable to rail track operation maintenance measurement, it is characterised in that:
Described device is target box body, is the rigidity polyhedron with four faces, vertical driving face, face and face of vertically driving a vehicle below the target end face being sloped downwardly including vertical back of the body driving face, back of the body driving face one and target end face；
Target end face, driving face, face and vertical driving face intersect at a point, and this point is target anchor point.
Target end face is the inclined-plane horizontal by 135 ° of angles；
The two sides angle in dough-making powder driving face, vertical driving face is 120 °；
Target anchor point is 121.5-300mm away from target box body bottom level；
Vertical driving face and a length of 200-300mm in base in driving face, face.
It is fixed on by connecting bolt on the built-in fitting at target control point bottom target box body.
This utility model has the advantage that
Target box body and built-in fitting are fixed by connecting bolt and are arranged on Along Railway by this utility model, good stability, do not rock, solid, new cable stake, anchor spike, hundred chi marks, kilometer post, in bridges and culverts board or cement platform, scanning operation by Vehicle-borne Laser Scanning instrument, the cloud data of sufficient density is obtained on target, for extracting the measurement coordinate of target anchor point and carrying out a cloud secondary correction, thus improve a cloud precision.Target box surface is coated with strong reflectorised paint, can strengthen the target reflex strength to laser, improves target identification in cloud data；Its box body is designed as three faces and obtains the polyhedron of scanning elements, and overcoming spherical target cannot the one-off scanning shortcoming of collecting all surfaces cloud data information；Two target lateral layout are 120 ° of angles, and end face improves, horizontal by 135 ° of angles, relatively cuboid target, the scanning element quantity that target face obtains；Its anchor point is designed as the intersection point on three surfaces, overcome the defect that the accuracy at plane target drone control point is easily affected by multiple reflection effect, these features make follow-up target extraction accuracy be largely increased, thus ensure that and use target to carry out a precision for cloud constraint.
Accompanying drawing explanation
Fig. 1 is this utility model front view.
Fig. 2 is this utility model side view.
Fig. 3 is this utility model top view.
In figure, 1-target box body, 2-carries on the back driving face, 3-target end face, driving face, 4-face, and 5-vertically drives a vehicle face, 6-target anchor point.
Detailed description of the invention
Below in conjunction with detailed description of the invention, this utility model is described in detail.
The cloud data obtained due to LiDAR measuring method can not set up accurate corresponding relation with known point, it is therefore necessary to uses target control point to set up the accurate corresponding relation of some cloud and known point.In order to utilize scanning cloud data to extract the coordinate figure at accurate known control point, it is necessary to found a kind of energy and asked for the target apparatus at known control point by cloud data.In order to adapt to the scanning needs of rail track operating mode, the utility model proposes a kind of target apparatus, solve the corresponding relation problem of a cloud and known control point.
A kind of target apparatus being applicable to rail track operation maintenance measurement that this utility model relates to, for target box body 1, it is the rigidity polyhedron with four faces, vertical driving face, face 4 and vertical driving face 5 below the target end face 3 being sloped downwardly including vertical back of the body driving face 2, back of the body driving face 2 one and target end face.Target end face 3, driving face, face 4 and vertical driving face 5 intersect at a point, and this point is target anchor point 6.Vertical driving face 5 is perpendicular to that This train is bound for XXX, and driving face, face 4 is with This train is bound for XXX in 150 ° of angles, and vertical driving face 5 dough-making powder driving face 4 carries out checker according to direction of traffic difference.Target anchor point 6 is all the time towards This train is bound for XXX.
Target end face 3 is the inclined-plane horizontal by 135 ° of angles；The two sides angle in dough-making powder driving face 4, vertical driving face 5 is 120 °；Target size is according to field working conditions, and in the case of guaranteeing at least to obtain three scan lines on scanning plane, target anchor point selects the proper height of 121.5-300mm away from target box body 1 bottom level；The bottom side length in vertical driving face 5 and driving face, face 4 selects the appropriate length of 200-300mm.
It is fixed on by connecting bolt on the built-in fitting at target control point bottom target box body 1.Target box body 1 surface is coated with strong reflectorised paint.
Content of the present utility model is not limited to cited by embodiment, the conversion of any equivalence that technical solutions of the utility model are taked by those of ordinary skill in the art by reading this utility model description, is claim of the present utility model and is contained.
Claims (3)
1. one kind is applicable to the target apparatus that rail track operation maintenance is measured, it is characterised in that:
Described device is target box body (1), it is the rigidity polyhedron with four faces, vertical driving face, face (4) and face (5) of vertically driving a vehicle below the target end face (3) being sloped downwardly including vertical back of the body driving face (2), back of the body driving face (2) one and target end face；
Target end face (3), driving face, face (4) and face (5) of vertically driving a vehicle intersect at a point, and this point is target anchor point (6).
A kind of target apparatus being applicable to rail track operation maintenance measurement the most according to claim 1, it is characterised in that:
Target end face (3) is the inclined-plane horizontal by 135 ° of angles；
The two sides angle of face (5) dough-making powder of vertically driving a vehicle driving face (4) is 120 °；
Target anchor point is 121.5-300mm away from target box body (1) bottom level；
Vertically drive a vehicle a length of 200-300mm in base of face (5) and driving face, face (4).
A kind of target apparatus being applicable to rail track operation maintenance measurement the most according to claim 1, it is characterised in that:
Target box body (1) bottom is fixed on the built-in fitting at target control point by connecting bolt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620462604.2U CN205748383U (en) | 2016-05-20 | 2016-05-20 | A kind of target apparatus being applicable to rail track operation maintenance measurement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620462604.2U CN205748383U (en) | 2016-05-20 | 2016-05-20 | A kind of target apparatus being applicable to rail track operation maintenance measurement |
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| CN205748383U true CN205748383U (en) | 2016-11-30 |
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| CN201620462604.2U Active CN205748383U (en) | 2016-05-20 | 2016-05-20 | A kind of target apparatus being applicable to rail track operation maintenance measurement |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107870324A (en) * | 2017-05-09 | 2018-04-03 | 吉林大学 | The caliberating device and method of a kind of multi-line laser radar |
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2016
- 2016-05-20 CN CN201620462604.2U patent/CN205748383U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107870324A (en) * | 2017-05-09 | 2018-04-03 | 吉林大学 | The caliberating device and method of a kind of multi-line laser radar |
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