CN105606072A - Detection method for road gradient - Google Patents
Detection method for road gradient Download PDFInfo
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- CN105606072A CN105606072A CN201610164041.3A CN201610164041A CN105606072A CN 105606072 A CN105606072 A CN 105606072A CN 201610164041 A CN201610164041 A CN 201610164041A CN 105606072 A CN105606072 A CN 105606072A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C9/00—Measuring inclination, e.g. by clinometers, by levels
Abstract
The invention discloses a detection method for road gradient. The detection method comprises the following steps: 1) acquiring a contour map and a road planning map of a to-be-detected area from a national or local mapping department; 2) respectively performing scanning and space rectification on the contour map and the road planning map, thereby acquiring a contour line grid distribution diagram and a road planning grid distribution diagram; and 3) respectively performing digital treatment on the contour line grid distribution diagram and the road planning grid distribution diagram, thereby acquiring a contour line vector distribution diagram and a road planning vector distribution diagram, and then performing irregular trapezoid grid conversion treatment on the contour line vector distribution diagram, thereby acquiring a contour line irregular trapezoid grid. According to the detection method for road gradient provided by the invention, the continuous gradient at any point along the road direction on the road rather than the gradient of facet ground feature vertical slope can be detected, so that the accuracy is high and the practicability is strong. Besides, an acceleration sensor on a haulage motor can be used for verifying the gradient and the accuracy of the detection is enhanced.
Description
Technical field
The present invention relates to a kind of detection method, specifically a kind of detection method of road grade.
Background technology
Park way is composition key element important in view, is a part for landscape. Scenic spot tourist road not only will guarantee that road itself is smooth, the quality on nature and road surface, be also noted that through regional vision appreciation effect, landscape feature can be shown on the way. Therefore, the Site Selection of road should be coordinated mutually with natural scene feature, natural force. In scenic spot, the selection of route will make full use of the residing position of road and the physical relief gradient, preserves the river, the rock of protuberance, dense jungle and vegetational type of country of natural torsion, and the nature contour line forming because of earth's crust orogenic movement. Like this, make tourist coach through the dense woods, quiet and beautiful valley or sandy beach, streamside, enjoy the view rustic charm of the Nature to the full.
In order to meet function, the aesthetic of landscape requirement of park way system, the particularly condition such as the programming and distribution of scenic spot tourist road and the feasibility of construction, the slope detection of road becomes a ring important in the planning of tourism region. Because road grade directly affects the convenience of vehicle pass-through, road drainage patency, and with planning and designing in grade, functional localization and the excavation earth work amount etc. of road closely related, be the key factor of road construction cost accounting and feasibility analysis.
Summary of the invention
The object of the present invention is to provide a kind of detection method of road grade, to solve the problem proposing in above-mentioned background technology.
For achieving the above object, the invention provides following technical scheme:
A detection method for road grade, comprises the steps: the first step, obtains contour map and the roading figure in region to be detected from country or local Mapping departments; Second step, scans and spatial registration contour map and roading figure respectively, obtains contour grid distribution map and roading grid distribution map; The 3rd step, respectively contour wire grid distribution map and roading grid distribution map are carried out to digitized processing, obtain contour vector distribution map and roading vector distribution map, and contour line vector distribution map is carried out to the processing of irregular grid conversion, obtain contour irregular grid; The 4th step, extracts all nodes in contour irregular grid, obtains elevation scatter diagram, and elevation scatter diagram is carried out to space interpolation processing, obtains elevation distribution map; The 5th step, extract the road elevation information in elevation distribution map, add to and in roading vector distribution map, obtain road elevation distribution map, and road elevation distribution map is expanded to processing, making the width of every road in road elevation distribution map is K, and make each grid grid around in extent have value by mean value smoothing processing, thereby obtain the road elevation distribution map after expansion; The 6th step, utilizes acceleration transducer to obtain acceleration signal, utilizes rate signal module to obtain rate signal; Corrected value to described acceleration signal in the time that the velocity amplitude of described rate signal reaches pre-set velocity is proofreaied and correct, and this corrected value represents that motor vehicle is positioned at the signal value of level ground and the output of static brief acceleration sensor; Obtain motor vehicle accekeration according to described rate signal; Obtain value of slope according to the corrected value through overcorrect, acceleration signal, motor vehicle accekeration and terrestrial gravitation acceleration.
As the further scheme of the present invention: the spatial registration in described second step is: first select projection pattern and some equally distributed ground control points, then select multinomial as geometric distortion model, the positional information substitution multinomial of ground control point is determined to the expression of geometric distortion model, finally will scheme upper remaining some substitution geometric distortion model, obtain the geometric correction value of each point in figure.
As the further scheme of the present invention: the digitized processing in described the 3rd step, comprising: tracking collection, the interpolation of attribute field and the typing of attribute data to graphical element.
As the further scheme of the present invention: the irregular grid conversion processing in described the 3rd step is that contour vector distribution map is divided into several equal triangular facet grids.
As the further scheme of the present invention: the space interpolation processing in described the 4th step is SPL interpolation method, or anti-distance weighted method.
As further scheme of the present invention: the span of the K in described the 5th step is: 3m-4m.
Compared with prior art, the invention has the beneficial effects as follows: the detection method of road grade of the present invention can detect on road any point along the continuous gradient of trend of road, instead of the vertical domatic gradient of area feature, thereby the degree of accuracy is high, practical, adopt in addition the acceleration transducer on locomotive to verify the gradient, strengthened the degree of accuracy detecting.
Detailed description of the invention
Below the technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiment. Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtaining under creative work prerequisite, belong to the scope of protection of the invention.
In the embodiment of the present invention, a kind of detection method of road grade, comprises the steps: the first step, obtains contour map and the roading figure in region to be detected from country or local Mapping departments; Second step, scans and spatial registration contour map and roading figure respectively, obtains contour grid distribution map and roading grid distribution map; The 3rd step, respectively contour wire grid distribution map and roading grid distribution map are carried out to digitized processing, obtain contour vector distribution map and roading vector distribution map, and contour line vector distribution map is carried out to the processing of irregular grid conversion, obtain contour irregular grid; The 4th step, extracts all nodes in contour irregular grid, obtains elevation scatter diagram, and elevation scatter diagram is carried out to space interpolation processing, obtains elevation distribution map; The 5th step, extract the road elevation information in elevation distribution map, add to and in roading vector distribution map, obtain road elevation distribution map, and road elevation distribution map is expanded to processing, making the width of every road in road elevation distribution map is K, and make each grid grid around in extent have value by mean value smoothing processing, thereby obtain the road elevation distribution map after expansion; The 6th step, utilizes acceleration transducer to obtain acceleration signal, utilizes rate signal module to obtain rate signal; Corrected value to described acceleration signal in the time that the velocity amplitude of described rate signal reaches pre-set velocity is proofreaied and correct, and this corrected value represents that motor vehicle is positioned at the signal value of level ground and the output of static brief acceleration sensor; Obtain motor vehicle accekeration according to described rate signal; Obtain value of slope according to the corrected value through overcorrect, acceleration signal, motor vehicle accekeration and terrestrial gravitation acceleration; Spatial registration in described second step is: first select projection pattern and some equally distributed ground control points, then select multinomial as geometric distortion model, the positional information substitution multinomial of ground control point is determined to the expression of geometric distortion model, finally will scheme upper remaining some substitution geometric distortion model, obtain the geometric correction value of each point in figure; Digitized processing in described the 3rd step, comprising: tracking collection, the interpolation of attribute field and the typing of attribute data to graphical element; Irregular grid conversion processing in described the 3rd step is that contour vector distribution map is divided into several equal triangular facet grids; Space interpolation processing in described the 4th step is SPL interpolation method, or anti-distance weighted method; The span of K in described the 5th step is: 3m-4m.
Operation principle of the present invention is: the first step, obtain the contour map in region to be detected and the roading figure of regional planning person's design from country or local Mapping departments.
Described contour map is the figure being formed by connecting with contour, represents that ground height rises and falls, and what generally provide with Mapping departments is as the criterion. Described tourist road planning chart is to represent the geographical position of road and the map of spatial distribution with lines.
Second step, scans and spatial registration contour map and roading figure respectively, obtains contour grid distribution map and roading grid distribution map.
Described spatial registration, specifically: first select projection pattern and some equally distributed ground control points, then select multinomial as geometric distortion model, the positional information substitution multinomial of ground control point is determined to the expression of geometric distortion model, finally will scheme upper remaining some substitution geometric distortion model, the geometric correction value that obtains each point in figure, described projection pattern refers to the method that three-dimensional earth three-dimensional model is transformed into two-dimentional map plane.
Described ground control point is the significant data source of airphoto and satellite remote-sensing image being carried out to various geometric corrections and geo-location, its characters of ground object should be obvious and be uniformly distributed in study area, and the quantity of ground control point is according to the difference of the projection pattern of selecting and geometric distortion model and difference.
To those skilled in the art, obviously the invention is not restricted to the details of above-mentioned example embodiment, and in the situation that not deviating from spirit of the present invention or essential characteristic, can realize the present invention with other concrete form. Therefore, no matter from which point, all should regard embodiment as exemplary, and be nonrestrictive, scope of the present invention is limited by claims instead of above-mentioned explanation, is therefore intended to all changes that drop in the implication and the scope that are equal to important document of claim to include in the present invention. Any Reference numeral in claim should be considered as limiting related claim.
In addition, be to be understood that, although this description is described according to embodiment, but be not that each embodiment only comprises an independently technical scheme, this narrating mode of description is only for clarity sake, those skilled in the art should make description as a whole, and the technical scheme in each embodiment also can, through appropriately combined, form other embodiments that it will be appreciated by those skilled in the art that.
Claims (6)
1. a detection method for road grade, is characterized in that, comprises the steps: the first step, obtains contour map and the roading figure in region to be detected from country or local Mapping departments; Second step, scans and spatial registration contour map and roading figure respectively, obtains contour grid distribution map and roading grid distribution map; The 3rd step, respectively contour wire grid distribution map and roading grid distribution map are carried out to digitized processing, obtain contour vector distribution map and roading vector distribution map, and contour line vector distribution map is carried out to the processing of irregular grid conversion, obtain contour irregular grid; The 4th step, extracts all nodes in contour irregular grid, obtains elevation scatter diagram, and elevation scatter diagram is carried out to space interpolation processing, obtains elevation distribution map; The 5th step, extract the road elevation information in elevation distribution map, add to and in roading vector distribution map, obtain road elevation distribution map, and road elevation distribution map is expanded to processing, making the width of every road in road elevation distribution map is K, and make each grid grid around in extent have value by mean value smoothing processing, thereby obtain the road elevation distribution map after expansion; The 6th step, utilizes acceleration transducer to obtain acceleration signal, utilizes rate signal module to obtain rate signal; Corrected value to described acceleration signal in the time that the velocity amplitude of described rate signal reaches pre-set velocity is proofreaied and correct, and this corrected value represents that motor vehicle is positioned at the signal value of level ground and the output of static brief acceleration sensor; Obtain motor vehicle accekeration according to described rate signal; Obtain value of slope according to the corrected value through overcorrect, acceleration signal, motor vehicle accekeration and terrestrial gravitation acceleration.
2. the detection method of road grade according to claim 1, it is characterized in that, spatial registration in described second step is: first select projection pattern and some equally distributed ground control points, then select multinomial as geometric distortion model, the positional information substitution multinomial of ground control point is determined to the expression of geometric distortion model, finally will scheme upper remaining some substitution geometric distortion model, obtain the geometric correction value of each point in figure.
3. the detection method of road grade according to claim 1, is characterized in that, the digitized processing in described the 3rd step, comprising: tracking collection, the interpolation of attribute field and the typing of attribute data to graphical element.
4. the detection method of road grade according to claim 1, is characterized in that, the irregular grid conversion processing in described the 3rd step is that contour vector distribution map is divided into several equal triangular facet grids.
5. the detection method of road grade according to claim 1, is characterized in that, the space interpolation processing in described the 4th step is SPL interpolation method, or anti-distance weighted method.
6. the detection method of road grade according to claim 1, is characterized in that, the span of the K in described the 5th step is: 3m-4m.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106250880A (en) * | 2016-08-23 | 2016-12-21 | 广西科技大学 | Road grade visible detection method before a kind of vehicle driving up |
| CN107844796A (en) * | 2016-09-20 | 2018-03-27 | 福特全球技术公司 | The detecting system and method for ice and snow |
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| CN101482616A (en) * | 2008-08-13 | 2009-07-15 | 中国科学院电子学研究所 | Topographic survey method |
| CN101838958A (en) * | 2010-06-08 | 2010-09-22 | 上海交通大学 | Road gradient detection method |
| CN102313535A (en) * | 2011-06-29 | 2012-01-11 | 惠州市德赛西威汽车电子有限公司 | Slope detection method |
| CN104973065A (en) * | 2014-04-02 | 2015-10-14 | 现代自动车株式会社 | Apparatus And Method Estimating Road Slope Of Vehicle |
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2016
- 2016-03-22 CN CN201610164041.3A patent/CN105606072A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101482616A (en) * | 2008-08-13 | 2009-07-15 | 中国科学院电子学研究所 | Topographic survey method |
| CN101838958A (en) * | 2010-06-08 | 2010-09-22 | 上海交通大学 | Road gradient detection method |
| CN102313535A (en) * | 2011-06-29 | 2012-01-11 | 惠州市德赛西威汽车电子有限公司 | Slope detection method |
| CN104973065A (en) * | 2014-04-02 | 2015-10-14 | 现代自动车株式会社 | Apparatus And Method Estimating Road Slope Of Vehicle |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106250880A (en) * | 2016-08-23 | 2016-12-21 | 广西科技大学 | Road grade visible detection method before a kind of vehicle driving up |
| CN106250880B (en) * | 2016-08-23 | 2020-12-04 | 广西科技大学 | Visual detection method for gradient of road before vehicle uphill |
| CN107844796A (en) * | 2016-09-20 | 2018-03-27 | 福特全球技术公司 | The detecting system and method for ice and snow |
| CN107844796B (en) * | 2016-09-20 | 2023-07-21 | 福特全球技术公司 | Ice and snow detection system and method |
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