CN107886714A - A kind of Dangerous Area decision method and road analysis method and device - Google Patents
A kind of Dangerous Area decision method and road analysis method and device Download PDFInfo
- Publication number
- CN107886714A CN107886714A CN201610870878.XA CN201610870878A CN107886714A CN 107886714 A CN107886714 A CN 107886714A CN 201610870878 A CN201610870878 A CN 201610870878A CN 107886714 A CN107886714 A CN 107886714A
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- acceleration
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- G—PHYSICS
- G08—SIGNALLING
- G08G—TRAFFIC CONTROL SYSTEMS
- G08G1/00—Traffic control systems for road vehicles
- G08G1/01—Detecting movement of traffic to be counted or controlled
- G08G1/0104—Measuring and analyzing of parameters relative to traffic conditions
- G08G1/0137—Measuring and analyzing of parameters relative to traffic conditions for specific applications
Abstract
The present invention, which provides a kind of Dangerous Area decision method and road analysis method and device, the decision method, to be included：Obtain at least one wheelpath information in target road section, acceleration of the vehicle in the target road section according to corresponding to every wheelpath information calculates the wheelpath information respectively, judge whether the target road section is Dangerous Area according to the acceleration.Transport condition of the present invention based on real vehicles in target road section judges whether section is dangerous automatically, avoids artificial factor of judgment, thus can improve the accuracy of Dangerous Area decision.
Description
Technical field
The present invention relates to transport information processing technology field, and in particular to a kind of Dangerous Area decision method and road analysis
Method and device.
Background technology
In traffic highway, influenceed by factors such as vehicle flowrate, the highway gradient and highway angle of turn, certain may be caused
The probability that a little highways hold generation traffic accident is higher.
At present, some guiders or system may provide for the prompt facility of Dangerous Area, such as when vehicle travels
During to known Dangerous Area, system sends certain warning information, prompts driver's slow down, will largely lift driving
Safety and the personal safety for ensureing driving personnel and passenger.
The key point of such scheme from substantial amounts of section in filtering out Dangerous Area, existing Dangerous Area screening side
Method is to judge Dangerous Area by statistics of traffic accidents data, such as the more section of traffic accident will occur in a certain period
It is set as Dangerous Area, but the statistical operation of traffic accident is related to a large amount of human factors, in fact it could happen that situation is omitted, and
The generation position of the traffic accident of statistics is not accurate enough, causes accurately determine Dangerous Area position, it can be seen that existing
Dangerous Area decision scheme accuracy.
The content of the invention
The present invention is to solve the problem of existing Dangerous Area decision scheme accuracy is low.
In view of this, the embodiment of the present invention provides a kind of Dangerous Area decision method, including：Obtain in target road section extremely
Few wheelpath information；The vehicle according to corresponding to every wheelpath information calculates the wheelpath information respectively
Acceleration in the target road section；Judge whether the target road section is Dangerous Area according to the acceleration.
Preferably, the wheelpath information includes multiple tracing point information, and the tracing point information includes vehicle in institute
State the velocity information and temporal information during tracing point；It is described to be existed respectively according at least one wheelpath information calculating vehicle
Acceleration in target road section, including：Choose target road section described in distance in every wheelpath information respectively two
The nearest tracing point of end points；Respectively according to the speed of the tracing point and time, when calculating vehicle between the tracing point
Acceleration.
Preferably, it is described to judge whether the target road section is Dangerous Area according to the acceleration, including：Described in comparison
Acceleration and acceleration rate threshold, the acceleration rate threshold are less than 0m/s2；Calculate described less than or equal to the acceleration rate threshold
The ratio of wheelpath information corresponding to acceleration and all wheelpath information；According to target described in the ratio-dependent
Whether road is hazardous road.
The embodiment of the present invention provides a kind of road analysis method, including：Obtain road to be analyzed；By the road to be analyzed
It is divided at least one target road section；Judge whether the target road section is danger respectively according to above-mentioned Dangerous Area decision method
Dangerous section.
Preferably, it is described that the road to be analyzed is divided at least one target road section, including：From the road to be analyzed
Intersection region and known danger section region are rejected in road；Divided to obtain at least one to the road to be analyzed after rejecting
Target road section described in bar.
Correspondingly, the embodiment of the present invention provides a kind of Dangerous Area decision maker, including：Acquiring unit, for obtaining mesh
Mark at least one wheelpath information on section；Acceleration determining unit, for being believed respectively according to every wheelpath
Breath calculates acceleration of the vehicle in the target road section corresponding to the wheelpath information；Identifying unit, for according to institute
State acceleration and judge whether the target road section is Dangerous Area.
Preferably, the wheelpath information includes multiple tracing point information, and the tracing point information includes vehicle in institute
State the velocity information and temporal information during tracing point；The acceleration determining unit includes：End points determining unit, using selecting respectively
Take the nearest tracing point of two end points of target road section described in distance in every wheelpath information；Accelerometer between end points
Unit is calculated, respectively according to the speed of the tracing point and time, acceleration when calculating vehicle between the tracing point.
Preferably, the identifying unit includes：Comparing unit, it is described for comparing the acceleration and acceleration rate threshold
Acceleration rate threshold is less than 0m/s2；Ratio-dependent unit, for calculating the acceleration less than or equal to the acceleration rate threshold
The ratio of corresponding wheelpath information and all wheelpath information；Hazardous road identifying unit, for according to
Whether target road described in ratio-dependent is hazardous road.
The embodiment of the present invention provides a kind of road analytical equipment, including：Acquiring unit, for obtaining road to be analyzed；Draw
Subdivision, for the road to be analyzed to be divided into at least one target road section；Identifying unit, for according to above-mentioned danger
Section decision method judges whether the target road section is Dangerous Area respectively.
Preferably, the division unit includes：Culling unit, for rejecting crossroad mouth region from the road to be analyzed
Domain and known danger section region；Target road section determining unit, for the road to be analyzed after rejecting is divided to obtain to
A few target road section.
The Dangerous Area decision method and device provided according to embodiments of the present invention, vehicle is calculated using wheelpath information
Acceleration in target road section, it is possible thereby to determine transport condition of the vehicle in target road section, then sentenced according to acceleration
Whether disconnected target road section is hazardous road, and transport condition of this programme based on real vehicles in target road section judges section automatically
It is whether dangerous, artificial factor of judgment is avoided, thus can improve the accuracy of Dangerous Area decision.
The road analysis method and device provided according to embodiments of the present invention, the road in map datum is obtained first, so
Road is divided afterwards to obtain some target road sections, finally judged for each target road section, is determined respectively each
Whether target road section is Dangerous Area.Map datum can be analyzed automatically using this programme, automatically determined from map
Go out Dangerous Area, avoid artificial factor of judgment, thus can improve the accuracy of Dangerous Area decision.
Brief description of the drawings
, below will be to specific in order to illustrate more clearly of the specific embodiment of the invention or technical scheme of the prior art
The required accompanying drawing used is briefly described in embodiment or description of the prior art, it should be apparent that, in describing below
Accompanying drawing is some embodiments of the present invention, for those of ordinary skill in the art, before creative work is not paid
Put, other accompanying drawings can also be obtained according to these accompanying drawings.
Fig. 1 is the flow chart for the Dangerous Area decision method that one embodiment of the present of invention provides；
Fig. 2 is the relation schematic diagram of the target road section and wheelpath in one embodiment of the present of invention；
Fig. 3 is the flow chart for the road analysis method that one embodiment of the present of invention provides；
Fig. 4 is the schematic diagram of the road and target road section in one embodiment of the present of invention；
Fig. 5 is road and target road section and the schematic diagram in rejecting region in one embodiment of the present of invention；
Fig. 6 is the structural representation for the Dangerous Area decision maker that one embodiment of the present of invention provides；
Fig. 7 is the structural representation for the road analytical equipment that one embodiment of the present of invention provides.
Embodiment
Technical scheme is clearly and completely described below in conjunction with accompanying drawing, it is clear that described implementation
Example is part of the embodiment of the present invention, rather than whole embodiments.Based on the embodiment in the present invention, ordinary skill
The every other embodiment that personnel are obtained under the premise of creative work is not made, belongs to the scope of protection of the invention.
As long as in addition, technical characteristic involved in invention described below different embodiments non-structure each other
It is be combined with each other into conflict can.
The embodiments of the invention provide a kind of Dangerous Area decision method, as shown in figure 1, this method includes：
S1, at least one wheelpath information in target road section is obtained, wherein, target road section can be in map datum
Certain road of physical presence or the section divided in advance on certain road, the mode of division can be according to solid
Measured length divides or in advance by manually being divided automatically.Wheelpath information is gathered by vehicle positioning system
Information, trace information include vehicle location, vehicle in the information such as the time of each position and speed and direction of traffic.
S2, respectively according to corresponding to every wheelpath information calculates wheelpath information vehicle in target road section plus
Speed, such as can calculate according to speed during two position of the vehicle in target road section and time and vehicle at this two
Acceleration between position；
S3, judge whether target road section is Dangerous Area according to acceleration, in order to improve judgment accuracy, during practical application
Need to adopt substantial amounts of wheelpath information, an acceleration magnitude can be calculated for every trace information, thus can be obtained
To the acceleration magnitude for being largely directed to same section, these acceleration magnitudes are of different sizes, or even positive and negative difference.People in the art
Member is it is appreciated that negative acceleration represents that vehicle has the situation of deceleration, and the smaller expression deceleration intensity of value is stronger, therefore the present invention
Embodiment can excavate the quantity of the wheelpath with stronger deceleration situations based on big data, if gone out in a certain bar road
The wheelpath quantity now slowed down by force is more, then can be determined that the road is hazardous road.
The Dangerous Area decision method provided according to embodiments of the present invention, vehicle is calculated in target using wheelpath information
Acceleration on section, it is possible thereby to determine transport condition of the vehicle in target road section, target is then judged according to acceleration
Whether section is hazardous road, and transport condition of this programme based on real vehicles in target road section judges whether section endangers automatically
Danger, avoids artificial factor of judgment, thus can improve the accuracy of Dangerous Area decision.
Wheelpath in this area is typically to be made up of multiple continuous tracing points, and the quantity of tracing point depends on car
Carry the frequency acquisition of alignment system.When vehicle positioning system gathers information each time, the current position of vehicle, speed can be collected
The information such as degree, time and direction, i.e., each tracing point information include the velocity information and temporal information vehicle in tracing point.
As a preferred embodiment, above-mentioned steps S2 may include steps of：
S21, the terminal A in every wheelpath information mid-range objectives section and the tracing point a that terminal B is nearest are chosen respectively
With tracing point b.Fig. 2 shows the relation of two wheelpaths and same target road section, and the terminal A and B of target road section are fixed
, but the tracing point in each wheelpath may not be overlapped by chance with the end points, and the rail in different wheelpaths
Mark point is also misaligned, therefore the embodiment of the present invention is for two nearest rails of the equal selected distance section end points of each wheelpath
Mark point, using its approximation as section end points.
S22, respectively according to the speed of tracing point and time, acceleration when calculating vehicle between two tracing points will
Acceleration of this acceleration as vehicle in target road section.
Above-mentioned preferred scheme is approximate as target road end points using the tracing point in wheelpath, and with the time of this end points
Information and velocity information calculate vehicle acceleration, and this programme possesses higher computational efficiency.
As a preferred embodiment, above-mentioned steps S3 may include steps of：
S31, compares acceleration and acceleration rate threshold, acceleration rate threshold are less than 0m/s2, such as it is preset as -5m/s2；
S32, calculate wheelpath information corresponding to the acceleration less than or equal to acceleration rate threshold and all wheelpaths
The ratio of information, such as 1000 wheelpath information are shared, wherein 600 acceleration in target road section are less than -5m/
s2, then the ratio is 60%.
S33, whether it is hazardous road according to ratio-dependent target road, such as predetermined ratio threshold value is 50%, then it is above-mentioned
When ratio is more than 50%, judge that target road section is Dangerous Area.
An alternative embodiment of the invention provides a kind of road analysis method, as shown in figure 3, this method includes：
S ' 1, obtains road to be analyzed, and road to be analyzed can be a road or ring for physical presence in map datum
Road, the scope or beginning and end of known road would generally be provided in map datum；
S ' 2, it is analysed to road and is divided at least one target road section, for longer road, can be divided into
Sub- section, as described above, it is all feasible for example to draw grading mode according to preset length；For the shorter road of length, also may be used
To regard entire road as target road section.As shown in figure 4, the present embodiment by a road L be divided into 4 target road section La, Lb,
Lc、Ld；
S ' 3, according to above-mentioned Dangerous Area decision method, judge whether target road section is Dangerous Area respectively, i.e., according to double
Counting method judges whether target road section La, Lb, Lc, Ld are Dangerous Area respectively.
The road analysis method provided according to embodiments of the present invention, the road in map datum is obtained first, then to road
Road is divided to obtain some target road sections, is finally judged for each target road section, determines each target road respectively
Whether section is Dangerous Area.Map datum can be analyzed automatically using this programme, danger is automatically determined out from map
Section, artificial factor of judgment is avoided, thus can improve the accuracy of Dangerous Area decision.
The road conditions of physical presence are more complicated in map datum, in order that analysis result is more accurate, above-mentioned steps S ' 2
It may include steps of：
S ' 21, reject intersection region from road to be analyzed and known danger section region, Fig. 5 show Yi Tiaodao
Road L, wherein comprising crossing region R and known danger section L ', wherein crossing region R scope can be true according to pre-set radius
It is fixed, it is known that Dangerous Area L ' position and length are the contents included in map datum.Because vehicle is in crossing region traveling
When speed-down action belong to normal phenomenon, therefore should not be using crossing region as analysis object a part；Known danger
Section is probably to be determined beforehand through other modes, the present embodiment not as analysis object, thus come avoid repeat point
Analysis operation.
S ' 22, the road to be analyzed after rejecting is divided to obtain at least one target road section, it is possible thereby to mark off
Target road section La, Lb, Lc.
Above-mentioned preferred scheme rejects intersection region and known danger section from map datum, from the road after proposition
Upper division target road section, avoid invalid analysis operation, thus improves the efficiency of this programme.
An alternative embodiment of the invention additionally provides a kind of Dangerous Area decision maker, as shown in fig. 6, the device bag
Include：
Acquiring unit 61, for obtaining at least one wheelpath information in target road section；
Acceleration determining unit 62, for the car according to corresponding to every wheelpath information calculates wheelpath information respectively
Acceleration in target road section；
Identifying unit 63, for judging whether target road section is Dangerous Area according to acceleration.
The Dangerous Area decision maker provided according to embodiments of the present invention, vehicle is calculated in target using wheelpath information
Acceleration on section, it is possible thereby to determine transport condition of the vehicle in target road section, target is then judged according to acceleration
Whether section is hazardous road, and transport condition of this programme based on real vehicles in target road section judges whether section endangers automatically
Danger, avoids artificial factor of judgment, thus can improve the accuracy of Dangerous Area decision.
Preferably, wheelpath information includes multiple tracing point information, and tracing point information includes vehicle in tracing point
Velocity information and temporal information；
Acceleration determining unit 62 includes：
End points determining unit, using two end points for choosing at least one wheelpath information mid-range objectives section respectively
Nearest tracing point；
Acceleration calculation unit between end points, respectively according to the speed of tracing point and time, vehicle is calculated between tracing point
When acceleration.
Above-mentioned preferred scheme is approximate as target road end points using the tracing point in wheelpath, and with the time of this end points
Information and velocity information calculate vehicle acceleration, and this programme possesses higher computational efficiency.
Preferably, identifying unit 63 includes：
Comparing unit, for comparing acceleration and acceleration rate threshold, acceleration rate threshold is less than 0m/s2；
Ratio-dependent unit, for calculate less than or equal to acceleration rate threshold acceleration corresponding to wheelpath information with
The ratio of all wheelpath information；
Hazardous road identifying unit, for whether being hazardous road according to ratio-dependent target road.
An alternative embodiment of the invention additionally provides a kind of road analytical equipment, as shown in fig. 7, the device includes：
Acquiring unit 71, for obtaining road to be analyzed；
Division unit 72, at least one target road section is divided into for being analysed to road；
Identifying unit 79, for judging whether target road section is dangerous road respectively according to above-mentioned Dangerous Area decision method
Section.
The road analysis method provided according to embodiments of the present invention, the road in map datum is obtained first, then to road
Road is divided to obtain some target road sections, is finally judged for each target road section, determines each target road respectively
Whether section is Dangerous Area.Map datum can be analyzed automatically using this programme, danger is automatically determined out from map
Section, artificial factor of judgment is avoided, thus can improve the accuracy of Dangerous Area decision.
Preferably, division unit 72 includes：
Culling unit, for rejecting intersection region and known danger section region from road to be analyzed；
Target road section determining unit, for being divided to obtain at least one target road to the road to be analyzed after rejecting
Section.
Above-mentioned preferred scheme rejects intersection region and known danger section from map datum, from the road after proposition
Upper division target road section, avoid invalid analysis operation, thus improves the efficiency of this programme.
Obviously, above-described embodiment is only intended to clearly illustrate example, and is not the restriction to embodiment.It is right
For those of ordinary skill in the art, can also make on the basis of the above description it is other it is various forms of change or
Change.There is no necessity and possibility to exhaust all the enbodiments.And the obvious change thus extended out or
Among changing still in the protection domain of the invention.
Claims (10)
- A kind of 1. Dangerous Area decision method, it is characterised in that including：Obtain at least one wheelpath information in target road section；Respectively according to corresponding to every wheelpath information calculates the wheelpath information vehicle in the target road section On acceleration；Judge whether the target road section is Dangerous Area according to the acceleration.
- 2. according to the method for claim 1, it is characterised in that the wheelpath information includes multiple tracing point information, The tracing point information includes the velocity information and temporal information vehicle in the tracing point；It is described that acceleration of the vehicle in target road section is calculated according at least one wheelpath information respectively, including：The nearest tracing point of two end points of target road section described in distance in every wheelpath information is chosen respectively；Respectively according to the speed of the tracing point and time, acceleration when calculating vehicle between the tracing point.
- 3. according to the method for claim 1, it is characterised in that described to judge that the target road section is according to the acceleration No is Dangerous Area, including：The acceleration and acceleration rate threshold are compared, the acceleration rate threshold is less than 0m/s2；Calculate wheelpath information corresponding to the acceleration less than or equal to the acceleration rate threshold and all drivings The ratio of trace information；Whether it is hazardous road according to target road described in the ratio-dependent.
- A kind of 4. road analysis method, it is characterised in that including：Obtain road to be analyzed；The road to be analyzed is divided at least one target road section；Dangerous Area decision method according to any one of claim 1-3 judges whether the target road section is danger respectively Dangerous section.
- 5. according to the method for claim 4, it is characterised in that described that the road to be analyzed is divided at least one mesh Section is marked, including：Intersection region and known danger section region are rejected from the road to be analyzed；Road to be analyzed after rejecting is divided to obtain at least one target road section.
- A kind of 6. Dangerous Area decision maker, it is characterised in that including：Acquiring unit, for obtaining at least one wheelpath information in target road section；Acceleration determining unit, for respectively according to corresponding to every wheelpath information calculates the wheelpath information Acceleration of the vehicle in the target road section；Identifying unit, for judging whether the target road section is Dangerous Area according to the acceleration.
- 7. device according to claim 6, it is characterised in that the wheelpath information includes multiple tracing point information, The tracing point information includes the velocity information and temporal information vehicle in the tracing point；The acceleration determining unit includes：End points determining unit, using two end points for choosing target road section described in distance in every wheelpath information respectively Nearest tracing point；Acceleration calculation unit between end points, respectively according to the speed of the tracing point and time, vehicle is calculated in the tracing point Between when acceleration.
- 8. according to the method for claim 6, it is characterised in that the identifying unit includes：Comparing unit, for comparing the acceleration and acceleration rate threshold, the acceleration rate threshold is less than 0m/s2；Ratio-dependent unit, for calculating wheelpath letter corresponding to the acceleration less than or equal to the acceleration rate threshold Breath and the ratio of all wheelpath information；Hazardous road identifying unit, whether it is hazardous road for the target road according to the ratio-dependent.
- A kind of 9. road analytical equipment, it is characterised in that including：Acquiring unit, for obtaining road to be analyzed；Division unit, for the road to be analyzed to be divided into at least one target road section；Identifying unit, the mesh is judged respectively for the Dangerous Area decision method according to any one of claim 1-3 Mark whether section is Dangerous Area.
- 10. device according to claim 9, it is characterised in that the division unit includes：Culling unit, for rejecting intersection region and known danger section region from the road to be analyzed；Target road section determining unit, for being divided to obtain at least one target road to the road to be analyzed after rejecting Section.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610870878.XA CN107886714A (en) | 2016-09-30 | 2016-09-30 | A kind of Dangerous Area decision method and road analysis method and device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610870878.XA CN107886714A (en) | 2016-09-30 | 2016-09-30 | A kind of Dangerous Area decision method and road analysis method and device |
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| CN201610870878.XA Pending CN107886714A (en) | 2016-09-30 | 2016-09-30 | A kind of Dangerous Area decision method and road analysis method and device |
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| CN108417091A (en) * | 2018-05-10 | 2018-08-17 | 武汉理工大学 | Driving risk section identification based on net connection vehicle and early warning system and method |
| CN111739319A (en) * | 2019-10-18 | 2020-10-02 | 腾讯科技（深圳）有限公司 | Information processing method and device |
| CN112991794A (en) * | 2019-12-17 | 2021-06-18 | 神达数位股份有限公司 | Method, server, memory and chip for identifying dangerous road and sharing information |
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Application publication date: 20180406 |