CN106919737A - A kind of level-crossing sighting distance analysis method based on AutoCAD - Google Patents
A kind of level-crossing sighting distance analysis method based on AutoCAD Download PDFInfo
- Publication number
- CN106919737A CN106919737A CN201710037902.6A CN201710037902A CN106919737A CN 106919737 A CN106919737 A CN 106919737A CN 201710037902 A CN201710037902 A CN 201710037902A CN 106919737 A CN106919737 A CN 106919737A
- Authority
- CN
- China
- Prior art keywords
- wheel trochoid
- article
- wheel
- trochoid
- point
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F30/00—Computer-aided design [CAD]
- G06F30/20—Design optimisation, verification or simulation
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Computer Hardware Design (AREA)
- Evolutionary Computation (AREA)
- Geometry (AREA)
- General Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Road Signs Or Road Markings (AREA)
Abstract
A kind of level-crossing sighting distance analysis method based on AutoCAD：Initialize the drawing environment of CAD software；Interaction obtains first wheel trochoid and Article 2 wheel trochoid；Judge whether two wheel trochoids intersect, and obtain joining；Obtain at first point according to the intersection point and entrance driveway driving sight distance on first wheel trochoid, first wheel trochoid and Article 2 wheel trochoid；Second point is obtained according to the intersection point on Article 2 wheel trochoid, Article 2 wheel trochoid and exit ramp driving sight distance j；The straight line that first terminal of starting point is second point is drawn in the graphic, then the figure of first wheel trochoid, Article 2 wheel trochoid and straight line composition is sight triangle；The line segment of first wheel trochoid and Article 2 wheel trochoid beyond sight triangle is pruned, and it is entitled that the figure layer of first wheel trochoid, Article 2 wheel trochoid and straight line is set into figure layer：Sight triangle.The present invention performs speed soon, and flexibility is strong, is suitable for engineering design.
Description
Technical field
The present invention relates to a kind of sighting distance analysis side.More particularly to a kind of level-crossing sighting distance based on AutoCAD point
Analysis method.
Background technology
Sighting distance is a significant design index for ensureing highway driving safety, is highway engineering construction standard compulsory index
One of.What since driver travelled to automobile in this period section for determining take certain measure finding barrier along road surface
Most short running distance, referred to as sighting distance.Therefore, each track of Highways ' should have enough sighting distances, driver is examined in time
Feel potential dangerous, and make correct response, it is ensured that traffic safety.Sighting distance Safety Evaluation Technology is road safety safeguards technique
Important component, is to the Highway Project in design, construction and operation, traffic engineering project or any and highway
The relevant engineering project of user formally carries out sighting distance inspection and evaluates, to find the potential sighting distance deficiency section of project and elimination
A kind of safeguard technology of the potential safety hazard for thus causing.
Driving sight distance can be divided into stopping sight distance, meeting sighting distance, passing sight distance to ensure traffic safety, should enable driver
See the pavement of road of front certain distance, to find there is barrier or to always car on road surface in time, make automobile certain
Speed under can in time brake or avoid, so as to avoid accident.
The conventional method of driving sight distance inspection mainly has maximum T. minor computational methods and geometrograph (to draw sighting distance bag
Network figure) etc., these methods are simple and practical, and the former can check on curve whether plane sighting distance meets requirement, the latter at a certain position
The scope of influence sighting distance on horizontal curve (or vertical curve) can more accurately be determined.Maximum horizontal stroke is not only can determine that with geometrograph
Clear distance, can also determine the T. minor of any pile No. on any horizontal curve, and analytic method can only determine that the maximum of circular curve is horizontal net
Away from, therefore, geometrograph more has superiority from from the point of view of general applicability.
Manual drawing sighting distance envelope diagram very complicated, amount of calculation is big, it is necessary to manually draw a plurality of stadia hairs, drawing is fast
Degree is slow, and efficiency is low, the accuracy that cumulative errors influence driving sight distance is checked.If by programming software, with AutoCAD in same place
Reason space motion, is automatically performed the drafting of sighting distance envelope diagram after the specified parameter of realization, can save the extensive work time, there is provided work
Efficiency.
Level-crossing sighting distance is a key factor for influenceing intersection traffic safety, and good line of sight conditions can allow all
Vehicle perceives and finds the vehicle of other all directions and makes corresponding reaction in time, while can also be sent out by other vehicles
It is existing.Timely mutual perception improves the predictability and normalization of vehicle traveling between vehicle, reduces the possibility of accident generation
Property.In the level-crossing that sighting distance is not enough, due to that cannot know the ruuning situation of other all directions vehicles, driver can be according to oneself
Judge to slow down, cause entrance driveway speed variance to increase, increase the possibility of collision accident.During automobile approaching level-crossing, drive
The person of sailing should be able to see the travel situations of vehicle on whole intersecting roads clearly, successfully to cross intersection or in time parking, keep away
Exempt to collide.This segment distance have to be larger than or equal to stopping sight distance.Sighting distance trigonum should be drawn with least favorable situation, in triangle
In the range of shape, forbidden there are any various barriers obstructed the view.
The content of the invention
The technical problems to be solved by the invention are to provide after one kind realizes specified control parameter and are automatically performed sighting distance bag
The level-crossing sighting distance analysis method based on AutoCAD that network figure is drawn.
The technical solution adopted in the present invention is：A kind of level-crossing sighting distance analysis method based on AutoCAD, including
Following steps：
1) drawing environment of CAD software is initialized, including：Set current layer, close CAD drawing environments in it is orthogonal and
Catch and by CAD argument pointer direction models space；
2) interaction obtains entrance driveway driving sight distance jksj, two parameters of exit ramp driving sight distance cksj；
3) interaction obtains first wheel trochoid L1 and Article 2 wheel trochoid L2；
4) judge whether first wheel trochoid L1 intersects with Article 2 wheel trochoid L2, and obtain joining JD1；
5) according to the friendship on first wheel trochoid L1, first wheel trochoid L1 and Article 2 wheel trochoid L2
Point JD1 and entrance driveway driving sight distance jksj obtain point PT1；
6) regarded according to the intersection point JD1 on Article 2 wheel trochoid L2, Article 2 wheel trochoid L2 and exit ramp driving
Point PT2 is obtained away from cksj；
7) it is the straight line Sjline of PT2 for PT1 terminals to draw starting point in the graphic, then first article of wheel trochoid L1, the
The figure that two wheel trochoid L2 and straight line Sjline are constituted is sight triangle；
8) line segment of first wheel trochoid L1 and Article 2 wheel trochoid L2 beyond sight triangle is pruned, and
The figure layer of first wheel trochoid L1, Article 2 wheel trochoid L2 and straight line Sjline is set into figure layer entitled：Sighting distance
Triangle.
Step 3) described in first wheel trochoid L1 and Article 2 wheel trochoid L2 line style entity be CAD write from memory
One kind in the pline or arc or line three types that recognize, if the line style entity for obtaining is not the pline or arc of CAD acquiescences
Or the one kind in line three types, terminate program, and point out：Multi-section-line please be converted into, into step 4).
Step 4) in：
(1) if first wheel trochoid L1 intersects with Article 2 wheel trochoid L2, joining is set to intersection point JD1；
(2) if first wheel trochoid L1 is non-intersect with Article 2 wheel trochoid L2,：
A () pop-up window is pointed out：Wheel trochoid searches for intersection point automatically without intersection point；
If b () extends first wheel trochoid L1 and Article 2 wheel trochoid L2, if first wheelpath
Line L1 and Article 2 wheel trochoid L2 can not intersect, then quit a program, and point out：Intersection point is not searched；If first row
Track trace L1 and Article 2 wheel trochoid L2 intersects, and only one of which intersection point, and the intersection point is set into JD1, and by two songs
Line extends to JD1；If there is two intersection points, first wheel trochoid L1 of selection and Article 2 wheel trochoid L2 development lengths are most
That intersection point being so short that is set to intersection point JD1；First wheel trochoid L1 and Article 2 wheel trochoid L2 is extended into best friend
Point JD1；
If first wheel trochoid L1 overall length d () extends after is less than entrance driveway driving sight distance jksj (jksj), or prolongs
Article 2 wheel trochoid L2 overall lengths after stretching are less than exit ramp driving sight distance cksj, then quit a program, and point out：Sighting distance trajectory
It is too short.
Step 5) method that obtains point PT1 is to be to intersection point JD1 opposite direction development lengths along first wheel trochoid L1
The length of entrance driveway driving sight distance jksj, the point PT1 for obtaining.
Step 6) method that obtains point PT2 is to be to intersection point JD1 opposite direction development lengths along Article 2 wheel trochoid L2
The length of exit ramp driving sight distance cksj, the point PT2 for obtaining.
A kind of level-crossing sighting distance analysis method based on AutoCAD of the invention, using the built-in lisp of AutoCAD
Language is programmed, and develops sight distance checking software, it is adaptable to based on all highway route design softwares developed under CAD patterns, root
According to the intersection design parameter information for providing, by drawing entrance driveway and exit ramp wheel trochoid, the level-crossing is generated
Sight triangle, check whether its inside clearance meets the requirement of driving sight distance, it is not only directly perceived and computational accuracy is high.This hair
The bright computing capability and drawing function for giving full play to computer, improves designing quality, it is ensured that road operating safety.Present procedure
It is easy to learn and use, performs speed soon, flexibility is strong, is suitable for engineering design.
Brief description of the drawings
Fig. 1 is the main program flow chart of level-crossing sighting distance analysis method of the present invention based on AutoCAD；
Fig. 2 is to check two curves in the present invention and make the sub-process figure that two curves just intersect.
Specific embodiment
With reference to embodiment and accompanying drawing to a kind of level-crossing sighting distance analysis method based on AutoCAD of the invention
It is described in detail.
As shown in Figure 1 and Figure 2, a kind of level-crossing sighting distance analysis method based on AutoCAD of the invention, can basis
The intersection design parameter information of offer, by drawing entrance driveway and exit ramp wheel trochoid, generates the level-crossing
Sight triangle, checks whether its inside clearance meets the requirement of driving sight distance.
Usual friendship mouthful sighting distance analysis module carries out secondary development by vlisp language to CAD, with completed in scheming two
Based on bar wheel trochoid (banknotes-system need to be carried out according to code requirement), the inspection of usual friendship mouthful sighting distance, one kind of the invention are carried out
Level-crossing sighting distance analysis method based on AutoCAD, comprises the following steps：
1) drawing environment of CAD software is initialized, including：Set current layer, close CAD drawing environments in it is orthogonal and
Catch and by CAD argument pointer direction models space；
2) interaction obtains entrance driveway driving sight distance jksj, two parameters of exit ramp driving sight distance cksj；
3) interaction obtains first wheel trochoid L1 and Article 2 wheel trochoid L2；
First described wheel trochoid L1 and the line style entity of Article 2 wheel trochoid L2 are CAD acquiescences
One kind in pline or arc or line three types, if the line style entity for obtaining be not CAD acquiescence pline or arc or
One kind in line three types, terminates program, and point out：Multi-section-line please be converted into, into step 4).
4) judge whether first wheel trochoid L1 intersects with Article 2 wheel trochoid L2, and obtain joining JD1；
Wherein：
(1) if first wheel trochoid L1 intersects with Article 2 wheel trochoid L2, joining is set to intersection point JD1；
(2) if first wheel trochoid L1 is non-intersect with Article 2 wheel trochoid L2,：
A () pop-up window is pointed out：Wheel trochoid searches for intersection point automatically without intersection point；
If b () extends first wheel trochoid L1 and Article 2 wheel trochoid L2, if first wheelpath
Line L1 and Article 2 wheel trochoid L2 can not intersect, then quit a program, and point out：Intersection point is not searched；If first row
Track trace L1 and Article 2 wheel trochoid L2 intersects, and only one of which intersection point, and the intersection point is set into JD1, and by two songs
Line extends to JD1；If there is two intersection points, first wheel trochoid L1 of selection and Article 2 wheel trochoid L2 development lengths are most
That intersection point being so short that is set to intersection point JD1；First wheel trochoid L1 and Article 2 wheel trochoid L2 is extended into best friend
Point JD1；
If d first wheel trochoid L1 overall length after () extension is less than entrance driveway driving sight distance (jksj), or extension after
Article 2 wheel trochoid L2 overall lengths be less than exit ramp driving sight distance (cksj), then quit a program, point out：Sighting distance trajectory is too
It is short.
5) according to the friendship on first wheel trochoid L1, first wheel trochoid L1 and Article 2 wheel trochoid L2
Point JD1 and entrance driveway driving sight distance (jksj) obtain point PT1；The method for obtaining point PT1 is, along first wheel trochoid L1 to
Intersection point JD1 opposite directions development length is the length of entrance driveway driving sight distance (jksj), the point PT1 for obtaining.
6) regarded according to the intersection point JD1 on Article 2 wheel trochoid L2, Article 2 wheel trochoid L2 and exit ramp driving
Point PT2 is obtained away from (cksj)；The method for obtaining point PT2 is to extend to intersection point JD1 opposite directions along Article 2 wheel trochoid L2 and grow
It is the length of exit ramp driving sight distance (cksj) to spend, the point PT2 for obtaining.
7) it is the straight line Sjline of PT2 for PT1 terminals to draw starting point in the graphic, then first article of wheel trochoid L1, the
The figure that two wheel trochoid L2 and straight line Sjline are constituted is sight triangle；
8) line segment of first wheel trochoid L1 and Article 2 wheel trochoid L2 beyond sight triangle is pruned, and
The figure layer of first wheel trochoid L1, Article 2 wheel trochoid L2 and straight line Sjline is set into figure layer entitled：Sighting distance
Triangle.
Claims (5)
1. a kind of level-crossing sighting distance analysis method based on AutoCAD, it is characterised in that comprise the following steps：
1) drawing environment of CAD software is initialized, including：Current layer, the orthogonal and seizure closed in CAD drawing environments are set
And by CAD argument pointer direction models space；
2) interaction obtains entrance driveway driving sight distance jksj, two parameters of exit ramp driving sight distance cksj；
3) interaction obtains first wheel trochoid L1 and Article 2 wheel trochoid L2；
4) judge whether first wheel trochoid L1 intersects with Article 2 wheel trochoid L2, and obtain joining JD1；
5) according to the intersection point on first wheel trochoid L1, first wheel trochoid L1 and Article 2 wheel trochoid L2
JD1 and entrance driveway driving sight distance jksj obtain point PT1；
6) according to the intersection point JD1 and exit ramp driving sight distance on Article 2 wheel trochoid L2, Article 2 wheel trochoid L2
Cksj obtains point PT2；
7) it is the straight line Sjline of PT2 for PT1 terminals to draw starting point in the graphic, then first wheel trochoid L1, Article 2
The figure that wheel trochoid L2 and straight line Sjline is constituted is sight triangle；
8) line segment beyond sight triangle of first wheel trochoid L1 and Article 2 wheel trochoid L2 is pruned, and by the
The figure layer setting figure layer of one wheel trochoid L1, Article 2 wheel trochoid L2 and straight line Sjline is entitled：Sighting distance triangle
Shape.
2. a kind of level-crossing sighting distance analysis method based on AutoCAD according to claim 1, it is characterised in that
Step 3) described in first wheel trochoid L1 and Article 2 wheel trochoid L2 line style entity be CAD acquiescence
One kind in pline or arc or line three types, if the line style entity for obtaining be not CAD acquiescence pline or arc or
One kind in line three types, terminates program, and point out：Multi-section-line please be converted into, into step 4).
3. a kind of level-crossing sighting distance analysis method based on AutoCAD according to claim 1, it is characterised in that
Step 4) in：
(1) if first wheel trochoid L1 intersects with Article 2 wheel trochoid L2, joining is set to intersection point JD1；
(2) if first wheel trochoid L1 is non-intersect with Article 2 wheel trochoid L2,：
A () pop-up window is pointed out：Wheel trochoid searches for intersection point automatically without intersection point；
If b () extends first wheel trochoid L1 and Article 2 wheel trochoid L2, if first wheel trochoid L1
Can not intersect with Article 2 wheel trochoid L2, then quit a program, and point out：Intersection point is not searched；If first driving rail
Trace L1 and Article 2 wheel trochoid L2 intersects, and only one of which intersection point, the intersection point is set into JD1, and two curves are prolonged
Extend JD1；If there is two intersection points, first wheel trochoid L1 of selection and Article 2 wheel trochoid L2 development lengths are most so short that
To that intersection point be set to intersection point JD1；First wheel trochoid L1 and Article 2 wheel trochoid L2 are extended into intersection point
JD1；
If d first wheel trochoid L1 overall length after () extension is less than entrance driveway driving sight distance jksj (jksj), or extension after
Article 2 wheel trochoid L2 overall lengths be less than exit ramp driving sight distance cksj, then quit a program, point out：Sighting distance trajectory is too
It is short.
4. a kind of level-crossing sighting distance analysis method based on AutoCAD according to claim 1, it is characterised in that
Step 5) method that obtains point PT1 is, to intersection point JD1 opposite directions development length is entrance driveway row along first wheel trochoid L1
The length of car sighting distance jksj, the point PT1 for obtaining.
5. a kind of level-crossing sighting distance analysis method based on AutoCAD according to claim 1, it is characterised in that
Step 6) method that obtains point PT2 is, to intersection point JD1 opposite directions development length is exit ramp row along Article 2 wheel trochoid L2
The length of car sighting distance cksj, the point PT2 for obtaining.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710037902.6A CN106919737A (en) | 2017-01-19 | 2017-01-19 | A kind of level-crossing sighting distance analysis method based on AutoCAD |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710037902.6A CN106919737A (en) | 2017-01-19 | 2017-01-19 | A kind of level-crossing sighting distance analysis method based on AutoCAD |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106919737A true CN106919737A (en) | 2017-07-04 |
Family
ID=59454040
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710037902.6A Pending CN106919737A (en) | 2017-01-19 | 2017-01-19 | A kind of level-crossing sighting distance analysis method based on AutoCAD |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106919737A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9024949B2 (en) * | 2004-10-13 | 2015-05-05 | Sony Corporation | Object representation using distance functions |
| CN104746397A (en) * | 2015-01-30 | 2015-07-01 | 西南交通大学 | Determination method for minimum chamfer value of red lines of road intersection |
| CN105718672A (en) * | 2016-01-22 | 2016-06-29 | 集美大学 | CAD target selection method |
-
2017
- 2017-01-19 CN CN201710037902.6A patent/CN106919737A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9024949B2 (en) * | 2004-10-13 | 2015-05-05 | Sony Corporation | Object representation using distance functions |
| CN104746397A (en) * | 2015-01-30 | 2015-07-01 | 西南交通大学 | Determination method for minimum chamfer value of red lines of road intersection |
| CN105718672A (en) * | 2016-01-22 | 2016-06-29 | 集美大学 | CAD target selection method |
| CN105718672B (en) * | 2016-01-22 | 2019-02-12 | 集美大学 | A kind of CAD Object selection method |
Non-Patent Citations (3)
| Title |
|---|
| JUJUXYS: "Civil 3D在城市道路设计中的应用", 《百度文库：HTTPS://WENKU.BAIDU.COM/VIEW/0EA7DB8B6529647D272852A8.HTML》 * |
| 杨震: "《基于ObjectARX For AutoCAD技术的平交口计算机辅助设计系统研究》", 《中国优秀博硕士学位论文全文数据库(硕士)工程科技Ⅱ辑》 * |
| 王璠: "《基于AUTOCAD二次开发的交叉口交通组织设计》", 《中国优秀硕士学位论文全文数据库 信息科技辑 》 * |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN113486531B (en) | Vehicle driving path planning method, device and system | |
| JP6179191B2 (en) | Driving diagnosis device, driving diagnosis method and program | |
| JP5908724B2 (en) | Intersection course restriction information generating apparatus and method, computer program for generating intersection course restriction information, and recording medium recording the computer program | |
| CN106875456A (en) | A kind of plane sighting distance analysis method based on AutoCAD | |
| CN104608766A (en) | Automatic parking method and system used for intelligent vehicle through parking memory stick | |
| Pérez-Zuriaga et al. | Tangent-to-curve transition on two-lane rural roads based on continuous speed profiles | |
| CN103256939A (en) | Method for information fusion for intelligent vehicle by using variable-grain right-of-way radar map | |
| CN110168312A (en) | Method and apparatus based on target prediction dynamic object | |
| CN107901909A (en) | Control method, device and the controller that a kind of track is replaced automatically | |
| Llorca et al. | Passing behavior on two-lane roads in real and simulated environments | |
| Nehate et al. | 3D calculation of stopping-sight distance from GPS data | |
| Cao et al. | Exploring duration of lane change execution | |
| CN111651712A (en) | Method and system for evaluating complexity of test scene of intelligent automobile | |
| CN104850701B (en) | A kind of geometric construction method for drawing the vertical sighting distance envelope of vertical sag curve | |
| CN110515041A (en) | A kind of measuring vehicle distance control method and system based on Kalman filter technology | |
| Aryal | Optimization of geometric road design for autonomous vehicle | |
| CN103047987A (en) | Vehicle position acquisition method and device | |
| JP6716480B2 (en) | Road network change detecting device, road network change detecting method, computer program, and recording medium recording computer program | |
| Ma et al. | Anisotropy safety potential field model under intelligent and connected vehicle environment and its application in car-following modeling | |
| CN106919737A (en) | A kind of level-crossing sighting distance analysis method based on AutoCAD | |
| Herty et al. | Analysis of risk levels for traffic on a multi-lane highway | |
| CN116503510A (en) | Method and system for automatically constructing lane center line | |
| CN115905774A (en) | Dynamic shielding space model for visual domain of exit ramp of highway curve | |
| CN106898032A (en) | A kind of vertical sighting distance analysis method based on AutoCAD | |
| CN106585634A (en) | Method and device for analyzing driving behavior |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20170704 |
|
| WD01 | Invention patent application deemed withdrawn after publication |