CN111083643A - Customized application-oriented vehicle off-line fence calculation method - Google Patents
Customized application-oriented vehicle off-line fence calculation method Download PDFInfo
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- CN111083643A CN111083643A CN201911304297.XA CN201911304297A CN111083643A CN 111083643 A CN111083643 A CN 111083643A CN 201911304297 A CN201911304297 A CN 201911304297A CN 111083643 A CN111083643 A CN 111083643A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/02—Services making use of location information
- H04W4/021—Services related to particular areas, e.g. point of interest [POI] services, venue services or geofences
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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
- G08G1/0125—Traffic data processing
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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
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/02—Services making use of location information
- H04W4/023—Services making use of location information using mutual or relative location information between multiple location based services [LBS] targets or of distance thresholds
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/02—Services making use of location information
- H04W4/029—Location-based management or tracking services
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/30—Services specially adapted for particular environments, situations or purposes
- H04W4/40—Services specially adapted for particular environments, situations or purposes for vehicles, e.g. vehicle-to-pedestrians [V2P]
Abstract
The invention discloses a vehicle lane deviation fence calculation method for customized application, which judges whether the vehicle lane deviation fence exceeds the fence or not by monitoring the position of the vehicle in real time and combining a scoring statistic mode; the position drift possibly caused by GPS positioning is overcome, so that the final calculation result accords with the real condition, and the accurate and effective speed of the off-line fence can be calculated; the combination of the calculation of the off-line fence can provide a judgment basis for different customized applications, and when the vehicle breaks rules, the server can send warning information to the vehicle; when necessary, the action command is directly sent to the executing mechanism of the vehicle, and smooth running of the vehicle in a special area or on a line is ensured.
Description
Technical Field
The invention belongs to the technical field of vehicle networking, and relates to a customized application-oriented vehicle off-line fence calculation method.
Background
With the rapid development of the logistics industry and the development of the car networking technology, the demands of transportation companies on real-time vehicle management and control are higher and higher; and on the other hand, road safety or public place safety can also provide better guarantee through the car networking technology.
And the current off-line fence adopts the GPS position and the GPS speed to calculate whether the vehicle runs in a line and an area specified by a system, and simultaneously calculates whether the vehicle enters or exits a station and whether the vehicle is overspeed. Are generally generic services provided by service providers.
Disclosure of Invention
The technical problem to be solved by the invention is to provide a customized application-oriented vehicle off-line fence calculation method, which provides a judgment basis for different applications whether a vehicle runs according to a specified scheme or not, and overcomes the position drift possibly generated during position positioning.
The invention is realized by the following technical scheme:
a customized application-oriented vehicle off-line fence calculation method comprises the following operations:
1) setting a line or fence range on a map according to requirements, binding the line or fence range information by a vehicle, and uploading the line or fence range information to a server for storage;
2) when the vehicle runs, the vehicle-mounted terminal reports the real-time information of the position, the speed and the direction of the vehicle to the server through the gateway at a set frequency;
3) the server or the vehicle-mounted terminal carries out the calculation of the line deviation fence according to the real-time information of the vehicle:
a. and (4) judging whether the fence is entered: projecting the real-time position of the vehicle on a map, and judging whether the vehicle is in the fence area according to a ray method;
then, whether the vehicle enters the area is judged in a scoring mode, if the vehicle is in the fence area, the score is added, and if the vehicle is not in the fence area, the score is subtracted; judging that the fence area enters after the score is added to reach the designated score, and judging that the fence area leaves after the score is subtracted from the designated score;
b. and (3) judging whether the line enters: projecting the real-time position of the vehicle on a map, and considering that the vehicle is on the line if the shortest distance from the real-time position of the vehicle to the line is smaller than a threshold value, or considering that the vehicle is not on the line if the shortest distance from the real-time position of the vehicle to the line is smaller than the threshold value; and then the following incoming line/deviation line judgment is obtained by combining the direction judgment: not on the line, on the line but in a different direction than the line, on the line and in the same direction as the line;
then, whether the line enters the line or not is judged in a scoring mode, if the direction on the line is the same as the line, the score is added, and if the direction on the line is not the same as the line or the direction on the line is different from the line, the score is subtracted; judging the line to enter after the point reaches the designated point, and judging the line to be deviated after the point is reduced to the designated point;
4) the server sends the calculation result of the vehicle off-line fence to a message queue, and the pre-customized application module consumes the calculation result of the off-line fence in the message queue; according to the service requirements of the application, when the vehicle breaks rules, the information is recorded, and warning information or an execution instruction is sent to the vehicle-mounted terminal or the execution terminal.
The fence range comprises a circular or polygonal shape and a buffer area arranged on the outer edge of the fence range;
the line comprises a set line, a line radius and a line direction.
Whether the vehicle enters the fence is judged as follows:
1) projecting the real-time position of the vehicle on a map, and judging whether the vehicle is in the fence area according to a ray method;
2) judging whether the vehicle enters a region or not in a scoring mode, if the vehicle is in the region, adding points until the added points reach specified values, judging that the vehicle enters a fence region, and reporting vehicle state information when a position point of a first entering region;
if the subsequent position points are still in the region, continuing to add points until the maximum score is reached; and if the subsequent point is outside the area, the score is reduced, and the point is judged to leave the fence area after the score is reduced to the specified score.
Whether the vehicle enters the route is determined as:
1) projecting the real-time position of the vehicle on a map, and considering that the vehicle is on the line if the shortest distance from the real-time position of the vehicle to the line is smaller than a threshold value, or considering that the vehicle is not on the line if the shortest distance from the real-time position of the vehicle to the line is smaller than the threshold value; and then the following incoming line/deviation line judgment is obtained by combining the direction judgment: not on the line, on the line but in a different direction than the line, on the line and in the same direction as the line;
2) judging whether the vehicle enters a line or not in a scoring mode, if the vehicle enters the line and the direction of the vehicle is the same as that of the line, adding points until the added points reach specified values, judging that the vehicle enters the line, and reporting vehicle state information when the position point of the first entering line; if the position points are still on the line and the direction is the same as the line, the points are added continuously until the maximum point value is reached; if the subsequent position point is not on the line or on the line but the direction is different from the line, the score is subtracted, and the line is judged to be deviated after the score is reduced to the specified score; and reporting the vehicle state information when the position point of the first off-line is reported.
Compared with the prior art, the invention has the following beneficial technical effects:
the invention provides a custom application-oriented vehicle off-line fence calculation method, which judges whether the vehicle is off-line or exceeds a fence or not by monitoring the position of the vehicle in real time and combining a scoring statistic mode; the position drift possibly caused by GPS positioning is overcome, so that the final calculation result accords with the real condition, and the accurate and effective speed of the off-line fence can be calculated; the combination of the calculation of the off-line fence can provide a judgment basis for different customized applications, and when the vehicle breaks rules, the server can send warning information to the vehicle; when necessary, the action command is directly sent to the executing mechanism of the vehicle, and smooth running of the vehicle in a special area or on a line is ensured.
Drawings
FIGS. 1-1 to 1-3 are schematic views of a defined enclosure range, respectively;
FIG. 2 is a schematic view of the points where vehicles enter and leave the confines of the enclosure;
FIG. 3 is a schematic view of a vehicle entering route determination;
fig. 4 is a schematic diagram of detection of an off-course fence in a vehicle entrance area.
Detailed Description
The present invention will now be described in further detail with reference to the following examples, which are intended to be illustrative, but not limiting, of the invention.
The invention provides a customized application-oriented vehicle off-line fence calculation method, which comprises the following operations:
1) setting a line or fence range on a map according to requirements, binding the line or fence range information by a vehicle, and uploading the line or fence range information to a server for storage;
2) when the vehicle runs, the vehicle-mounted terminal reports the real-time information of the position, the speed and the direction of the vehicle to the server through the gateway at a set frequency;
3) the server or the vehicle-mounted terminal carries out the calculation of the line deviation fence according to the real-time information of the vehicle:
a. and (4) judging whether the fence is entered: projecting the real-time position of the vehicle on a map, and judging whether the vehicle is in the fence area according to a ray method;
then, whether the vehicle enters the area is judged in a scoring mode, if the vehicle is in the fence area, the score is added, and if the vehicle is not in the fence area, the score is subtracted; judging that the fence area enters after the score is added to reach the designated score, and judging that the fence area leaves after the score is subtracted from the designated score;
b. and (3) judging whether the line enters: projecting the real-time position of the vehicle on a map, and considering that the vehicle is on the line if the shortest distance from the real-time position of the vehicle to the line is smaller than a threshold value, or considering that the vehicle is not on the line if the shortest distance from the real-time position of the vehicle to the line is smaller than the threshold value; and then the following incoming line/deviation line judgment is obtained by combining the direction judgment: not on the line, on the line but in a different direction than the line, on the line and in the same direction as the line;
then, whether the line enters the line or not is judged in a scoring mode, if the direction on the line is the same as the line, the score is added, and if the direction on the line is not the same as the line or the direction on the line is different from the line, the score is subtracted; judging the line to enter after the point reaches the designated point, and judging the line to be deviated after the point is reduced to the designated point;
4) the server sends the calculation result of the vehicle off-line fence to a message queue, and the pre-customized application module consumes the calculation result of the off-line fence in the message queue; according to the service requirements of the application, when the vehicle breaks rules, the information is recorded, and warning information or an execution instruction is sent to the vehicle-mounted terminal or the execution terminal.
The fence range comprises a circular or polygonal shape and a buffer area arranged on the outer edge of the fence range;
the line comprises a set line, a line radius and a line direction.
Further, whether the vehicle enters the fence is determined as follows:
1) projecting the real-time position of the vehicle on a map, and judging whether the vehicle is in the fence area according to a ray method;
2) judging whether the vehicle enters a region or not in a scoring mode, if the vehicle is in the region, adding points until the added points reach specified values, judging that the vehicle enters a fence region, and reporting vehicle state information when a position point of a first entering region;
if the subsequent position points are still in the region, continuing to add points until the maximum score is reached; and if the subsequent point is outside the area, the score is reduced, and the point is judged to leave the fence area after the score is reduced to the specified score.
Further, whether the vehicle enters the route is determined as:
1) projecting the real-time position of the vehicle on a map, and considering that the vehicle is on the line if the shortest distance from the real-time position of the vehicle to the line is smaller than a threshold value, or considering that the vehicle is not on the line if the shortest distance from the real-time position of the vehicle to the line is smaller than the threshold value; and then the following incoming line/deviation line judgment is obtained by combining the direction judgment: not on the line, on the line but in a different direction than the line, on the line and in the same direction as the line;
2) judging whether the vehicle enters a line or not in a scoring mode, if the vehicle enters the line and the direction of the vehicle is the same as that of the line, adding points until the added points reach specified values, judging that the vehicle enters the line, and reporting vehicle state information when the position point of the first entering line; if the position points are still on the line and the direction is the same as the line, the points are added continuously until the maximum point value is reached; if the subsequent position point is not on the line or on the line but the direction is different from the line, the score is subtracted, and the line is judged to be deviated after the score is reduced to the specified score; and reporting the vehicle state information when the position point of the first off-line is reported.
The following detailed description of the various parts is made with reference to the accompanying drawings.
Referring to fig. 1-1 to 1-3, the determination that the vehicle enters or exits the fence area is: firstly, judging whether a position point is in a region of a specified type or a buffer region thereof;
the middle part of the graph is an actually edited region (planned region, designated region), and the peripheral part is a corresponding buffer region; the buffer area is set when the area is generated (for example, 50 meters by default). For convenience of description, the following references to within a region mean within a region or its buffer region, and the following references to outside a region mean outside a region and its buffer region;
whether the position point is within a rectangle, a circle, or a polygon is determined by a ray method. The method comprises the following specific steps:
setting a point p (x0, y0), a polytropic ptPolypon, judging whether the point p is in the polygon:
judging whether a point is in the polygon, leading out a horizontal ray from the point (any ray is available, but the horizontal is convenient for calculation), observing the number of intersection points of the ray and the multi-deformation, wherein if the number of the intersection points is odd, the point is in the polygon, and if the number of the intersection points is even, the point is out of the polygon.
For example, a horizontal ray is made from the point, the number of intersection points with the polygon is 2 × n +1, which is an odd number, and similarly, if the point is an even number outside the polygon.
The vehicle entering and exiting the fence area is judged by means of scoring:
if the position point is in the fence area, adding points (default is added with 10 points, which can be set according to specific conditions), judging that the vehicle enters the fence area after adding specified points (default is 50 points), and reporting the vehicle state (including information such as position, time and the like) when the first position point enters the fence area to the gateway by the vehicle;
in the case that it has been determined to be within the fence area, continue to score (by default plus 10 points) if subsequent location points are still within the area until the maximum score is reached (by default 60 points); and if the subsequent point is outside the area, subtracting the score (once subtracting the score by 10, and subtracting the score by 15 by default), judging that the fence area is formed after subtracting the specified score (the score is 10 by default), and reporting the vehicle state when the first position point of the fence area is formed.
Referring to the number of points entering and exiting the area shown in fig. 2, when the vehicle travels to the 5 th point, it is determined that the vehicle is in the area, and the entry point is the 1 st point; when the vehicle runs to the 6 th point, the score reaches the maximum value and is not increased; when the vehicle travels to the 11 th point, it is determined that the vehicle is out of the region, and the out-of-region point is the 8 th point.
The score determination table is as follows:
| dot sequence | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 |
| |
10 | 20 | 30 | 40 | 50 | 60 | 60 | 45 | 30 | 15 | 0 | 0 | 0 | 0 |
The judgment of the vehicle deviation line is as follows: whether the shortest distance from one position point (the position of the vehicle) to the line segment is smaller than a threshold value T (namely the radius of the road segment is 50 meters by default), if so, the point is considered to be on the line, otherwise, the point is considered not to be on the line;
the line can be regarded as a set consisting of a series of directed line segments; the line "A- > D" as in FIG. 3 is composed of three line segments AB, BC, CD; whether the shortest distance from one position point (the position of the vehicle) to the line segment is less than a threshold value T (namely, the radius of the road section, and the shortest distance is 50 meters by default); if the shortest distance S1 from the point P1 to the line segments AB, BC and CD is smaller than T, the point is considered to be on the line, otherwise, the point is considered not to be on the line;
since the route is directional, and the judgment of the direction is combined, the relationship between the vehicle and the route is as follows:
a. not on-line;
b. on the line, the direction is different from the line;
c. on the line, the direction is the same as the line;
determination of incoming/outgoing line of vehicle:
if the vehicle is on the line and the direction of the vehicle is the same as the line, adding points (default point is 10 points), judging the vehicle to enter the line after adding the points to a specified value (default point is 50 points), and reporting the vehicle state (including information such as position, time and the like) at the position point of the first entering line; if it has been determined to enter the route, if the subsequent vehicle is still on the route and the direction is the same as the route, the points are continued to be added (10 points by default) until the maximum score value (60 points by default) is reached; and if the subsequent vehicle is not on the line or on the line but has a different direction from the line, subtracting the score (default score minus 15) to a specified score (default score of 10), judging the vehicle to be deviated, and reporting the vehicle state at the position point of the first deviated line.
Specifically, referring to fig. 4, if the vehicle a is traveling at a high speed in a Rongma, enters a defined circle-shaped area and the speed limit of the vehicle a is 80km/h, the time of entering and leaving the area is reported at points a and b, if the speed of the vehicle a at point c is 90km/h, the server reports overspeed information at point c, and corresponding time, location and speed can be obtained according to the GPS.
Examples for different applications are given below.
Example 1
For example, the highest speed of the muck vehicle does not exceed 80km/h, the speed limit is regulated to 40km/h in a school area, when the detection result of the off-line fence judges that the muck vehicle enters the school area and detects that the speed exceeds 40km/h, the server sends a queue message and is consumed by the supervision application, and the application platform sends a command of limiting the speed by 40km/h to the vehicle (sends an alarm or sends a speed limit command to a brake mechanism); when the detection result of the off-line fence judges that the vehicle leaves the school area, the application platform issues a command of limiting the speed by 80km/h to the vehicle, and the previous speed limit is recovered; and recording the time, speed of entering and exiting the area, and the condition of overspeed at that time.
Example 2
For example, a vehicle route for transporting dangerous goods in a certain factory is planned and set with a speed limit alarm, wherein the speed limit is 60km/h and a buffer threshold is 60 meters; when the detection result of the line deviation fence judges that the transport vehicle deviates from the line or exceeds the speed, the server sends a queue message and the application platform alarms the transport vehicle and records the violation behavior after the queue message is consumed by the supervision application.
Example 3
For example, a certain fleet defines a driving or operating fence area for the managed vehicles according to the management requirements; when the detection result of the line-deviating fence judges that the vehicle A exits the defined fence area, the server sends a queue message and is consumed by the supervision application, and the application platform uploads the vehicle information, the position and the vehicle speed to the vehicle and the background server.
The embodiments given above are preferable examples for implementing the present invention, and the present invention is not limited to the above-described embodiments. Any non-essential addition and replacement made by the technical characteristics of the technical scheme of the invention by a person skilled in the art belong to the protection scope of the invention.
Claims (4)
1. A customized application-oriented vehicle off-line fence calculation method is characterized by comprising the following operations:
1) setting a line or fence range on a map according to requirements, binding the line or fence range information by a vehicle, and uploading the line or fence range information to a server for storage;
2) when the vehicle runs, the vehicle-mounted terminal reports the real-time information of the position, the speed and the direction of the vehicle to the server through the gateway at a set frequency;
3) the server or the vehicle-mounted terminal carries out the calculation of the line deviation fence according to the real-time information of the vehicle:
a. and (4) judging whether the fence is entered: projecting the real-time position of the vehicle on a map, and judging whether the vehicle is in the fence area according to a ray method;
then, whether the vehicle enters the area is judged in a scoring mode, if the vehicle is in the fence area, the score is added, and if the vehicle is not in the fence area, the score is subtracted; judging that the fence area enters after the score is added to reach the designated score, and judging that the fence area leaves after the score is subtracted from the designated score;
b. and (3) judging whether the line enters: projecting the real-time position of the vehicle on a map, and considering that the vehicle is on the line if the shortest distance from the real-time position of the vehicle to the line is smaller than a threshold value, or considering that the vehicle is not on the line if the shortest distance from the real-time position of the vehicle to the line is smaller than the threshold value; and then the following incoming line/deviation line judgment is obtained by combining the direction judgment: not on the line, on the line but in a different direction than the line, on the line and in the same direction as the line;
then, whether the line enters the line or not is judged in a scoring mode, if the direction on the line is the same as the line, the score is added, and if the direction on the line is not the same as the line or the direction on the line is different from the line, the score is subtracted; judging the line to enter after the point reaches the designated point, and judging the line to be deviated after the point is reduced to the designated point;
4) the server sends the calculation result of the vehicle off-line fence to a message queue, and the pre-customized application module consumes the calculation result of the off-line fence in the message queue; according to the service requirements of the application, when the vehicle breaks rules, the information is recorded, and warning information or an execution instruction is sent to the vehicle-mounted terminal or the execution terminal.
2. The custom application-oriented vehicle off-line fence calculation method as claimed in claim 1, wherein said fence range comprises a circular or polygonal shape and a buffer area disposed at an outer edge thereof;
the line comprises a set line, a line radius and a line direction.
3. The customized application-oriented vehicle off-line fence calculation method according to claim 1, wherein whether a vehicle enters a fence is determined as:
1) projecting the real-time position of the vehicle on a map, and judging whether the vehicle is in the fence area according to a ray method;
2) judging whether the vehicle enters a region or not in a scoring mode, if the vehicle is in the region, adding points until the added points reach specified values, judging that the vehicle enters a fence region, and reporting vehicle state information when a position point of a first entering region;
if the subsequent position points are still in the region, continuing to add points until the maximum score is reached; and if the subsequent point is outside the area, the score is reduced, and the point is judged to leave the fence area after the score is reduced to the specified score.
4. The customized application-oriented vehicle off-line fence calculation method according to claim 1, wherein whether a vehicle enters a route is determined as:
1) projecting the real-time position of the vehicle on a map, and considering that the vehicle is on the line if the shortest distance from the real-time position of the vehicle to the line is smaller than a threshold value, or considering that the vehicle is not on the line if the shortest distance from the real-time position of the vehicle to the line is smaller than the threshold value; and then the following incoming line/deviation line judgment is obtained by combining the direction judgment: not on the line, on the line but in a different direction than the line, on the line and in the same direction as the line;
2) judging whether the vehicle enters a line or not in a scoring mode, if the vehicle enters the line and the direction of the vehicle is the same as that of the line, adding points until the added points reach specified values, judging that the vehicle enters the line, and reporting vehicle state information when the position point of the first entering line; if the position points are still on the line and the direction is the same as the line, the points are added continuously until the maximum point value is reached; if the subsequent position point is not on the line or on the line but the direction is different from the line, the score is subtracted, and the line is judged to be deviated after the score is reduced to the specified score; and reporting the vehicle state information when the position point of the first off-line is reported.
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