CN111554102A - Vehicle overspeed judging method, system, storage medium and terminal - Google Patents
Vehicle overspeed judging method, system, storage medium and terminal Download PDFInfo
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- CN111554102A CN111554102A CN202010332078.9A CN202010332078A CN111554102A CN 111554102 A CN111554102 A CN 111554102A CN 202010332078 A CN202010332078 A CN 202010332078A CN 111554102 A CN111554102 A CN 111554102A
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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
- G08G1/052—Detecting movement of traffic to be counted or controlled with provision for determining speed or overspeed
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S19/00—Satellite radio beacon positioning systems; Determining position, velocity or attitude using signals transmitted by such systems
- G01S19/38—Determining a navigation solution using signals transmitted by a satellite radio beacon positioning system
- G01S19/39—Determining a navigation solution using signals transmitted by a satellite radio beacon positioning system the satellite radio beacon positioning system transmitting time-stamped messages, e.g. GPS [Global Positioning System], GLONASS [Global Orbiting Navigation Satellite System] or GALILEO
- G01S19/42—Determining position
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S19/00—Satellite radio beacon positioning systems; Determining position, velocity or attitude using signals transmitted by such systems
- G01S19/38—Determining a navigation solution using signals transmitted by a satellite radio beacon positioning system
- G01S19/39—Determining a navigation solution using signals transmitted by a satellite radio beacon positioning system the satellite radio beacon positioning system transmitting time-stamped messages, e.g. GPS [Global Positioning System], GLONASS [Global Orbiting Navigation Satellite System] or GALILEO
- G01S19/52—Determining velocity
Abstract
The invention provides a vehicle overspeed judging method, a system, a storage medium and a terminal; the method comprises the following steps: determining the current driving road of the vehicle by using a road matching algorithm; according to the electronic map, longitude and latitude information of the driving road and an interface program of the electronic map, road speed limit files corresponding to different driving roads are manufactured; the road speed limit file comprises a road speed limit value; acquiring the current running speed of the vehicle; comparing the current running speed with a road speed limit value corresponding to the current running road to judge whether the vehicle runs at an overspeed or not; compared with the prior art, the invention realizes the real-time monitoring of the vehicle running speed on the basis of the existing satellite positioning device, can judge whether the vehicle is overspeed under the complex road conditions of overlapping or parallel of an elevated road and a ground road, and the like, and reduces the vehicle monitoring cost on the basis of ensuring higher accuracy; and whether the driver is overspeed or not can be reminded in real time, so that the accident rate is reduced.
Description
Technical Field
The invention belongs to the field of physics, particularly relates to a measurement technology, and particularly relates to a vehicle overspeed judging method, a vehicle overspeed judging system, a storage medium and a terminal.
Background
Along with the rapid development of economy in China and the continuous improvement of living standard of people, the number of automobiles in China is increased year by year, various traffic accidents frequently occur while great convenience is brought to people, and overspeed of the automobiles is the root of many accidents; therefore, the real-time judgment of whether the running vehicle is overspeed in a certain road section and the prompt of the driver is necessary and meaningful work, and therefore, different road running speed limits are set according to different road sections and different time periods in China.
At present, the big Dipper/GPS satellite positioning devices are installed on most vehicles, and guarantee is provided for obtaining position and speed information of the vehicles in real time; however, it is critical to determine whether a certain road section of the vehicle is overspeed at a certain time by accurately positioning the road section where the vehicle is traveling and comparing the speed limit of the road section.
In the prior art, a map matching method such as a distance matching method, a topological matching method, a probability matching method, an advanced matching method and the like is commonly used for matching roads of running vehicles, wherein the most popular is a road network matching algorithm based on a hidden markov model, but because cities with many elevated roads such as Shanghai cities and the like have complex urban road conditions, especially the situations that ground roads and elevated roads are overlapped, overlapped and parallel, a simple or advanced map matching algorithm can often match vehicles originally running on the ground roads to the elevated roads, or locate vehicles originally running on the elevated roads to the overlapped or parallel ground roads, and because the speed limits of the ground roads and the elevated roads are different, misjudgment on overspeed of the vehicles is caused.
Disclosure of Invention
In view of the above-mentioned shortcomings of the prior art, an object of the present invention is to provide a method, a system, a storage medium and a terminal for determining vehicle overspeed, which are used to solve the problem in the prior art that vehicle overspeed is easily determined incorrectly when an overhead road and a ground road are overlapped, overlapped or parallel.
In order to achieve the above objects and other related objects, the present invention provides a method for determining vehicle overspeed, comprising the steps of: determining the current driving road of the vehicle by using a road matching algorithm; according to the electronic map, longitude and latitude information of a driving road and an interface program of the electronic map, making road speed limit files corresponding to different driving roads; the road speed limit file comprises a road speed limit value; acquiring the current running speed of the vehicle; and comparing the current running speed with the road speed limit value corresponding to the current running road so as to judge whether the vehicle runs at an overspeed or not.
In an embodiment of the present invention, the determining the current driving road of the vehicle by using the road matching algorithm includes the following steps: acquiring real-time positioning information of the vehicle; calculating a first included angle between the driving direction of the vehicle and a candidate road section and a vertical projection distance from the vehicle to the candidate road section based on the real-time positioning information; and inputting the first included angle, the vertical projection distance and the elevation value in the real-time positioning information into a normalization fuzzy system, so that the normalization fuzzy system outputs a normalization fuzzification value, and the current driving road is determined from the candidate road section according to the normalization fuzzification value.
In an embodiment of the present invention, the calculating a first included angle between a driving direction of the vehicle and the candidate road segment and a vertical projection distance from the vehicle to the candidate road segment based on the real-time positioning information includes: acquiring current longitude and latitude information of the vehicle and a second included angle between the vehicle and the designated direction based on the real-time positioning information; calculating a third included angle between the candidate road section and the specified direction according to the longitude and latitude information of the candidate road section; calculating the first included angle based on the second included angle and the third included angle; and calculating the vertical projection distance according to the current longitude and latitude information and the longitude and latitude information of the candidate road section.
In an embodiment of the present invention, the creating the road speed limit file according to the electronic map, the longitude and latitude information of the driving road, and the interface program of the electronic map includes: and extracting road speed limit values from the electronic map according to the longitude and latitude information, and establishing speed limit databases corresponding to different driving roads.
In an embodiment of the present invention, the obtaining the current driving speed of the vehicle includes: and acquiring the current running speed from the satellite positioning information of the vehicle.
In an embodiment of the present invention, the method further includes: and when the current running speed is greater than the road speed limit value, prompting the driver that the speed is overspeed.
In an embodiment of the present invention, the driving road includes an elevated road, a ground road and a ground bridge.
The invention provides a vehicle overspeed discrimination system, comprising: the device comprises a determining module, a manufacturing module, an obtaining module and a judging module; the determining module is used for determining the current driving road of the vehicle by using a road matching algorithm; the manufacturing module is used for manufacturing road speed limit files corresponding to different driving roads according to the electronic map, the longitude and latitude information of the driving roads and the interface program of the electronic map; the road speed limit file comprises a road speed limit value; the acquisition module is used for acquiring the current running speed of the vehicle; the judging module is used for comparing the current running speed with the road speed limit value corresponding to the current running road so as to judge whether the vehicle runs at an overspeed or not.
The present invention provides a storage medium having stored thereon a computer program which, when executed by a processor, implements the above-described vehicle overspeed discrimination method.
The present invention provides a terminal, including: a processor and a memory; the memory is used for storing a computer program; the processor is used for executing the computer program stored in the memory so as to enable the terminal to execute the vehicle overspeed judging method.
As described above, the method, system, storage medium, and terminal for determining vehicle overspeed according to the present invention have the following advantageous effects:
(1) compared with the prior art, the invention realizes the real-time monitoring of the vehicle running speed on the basis of the existing satellite positioning device, can judge whether the vehicle is overspeed under the complex road conditions of overlapping or parallel of an elevated road and a ground road, and the like, and reduces the vehicle monitoring cost on the basis of ensuring higher accuracy;
(2) the road matching precision of the elevated road section area is effectively improved, and vehicles are accurately matched to the accurate driving roads, including elevated roads, ground roads or ground bridges; the software technology is adopted to judge whether the vehicles running on different road sections overspeed at different time periods, so that the overspeed judgment rate is greatly improved, and a driver can be reminded of whether the vehicles overspeed in real time, so that the accident rate is reduced.
Drawings
Fig. 1 is a flowchart illustrating a method for determining overspeed of a vehicle according to an embodiment of the present invention.
Fig. 2 is a schematic structural diagram of a vehicle overspeed determining system according to an embodiment of the present invention.
Fig. 3 is a schematic structural diagram of a terminal according to an embodiment of the invention.
FIG. 4 is a flow chart illustrating an embodiment of the present invention for determining a current driving road of a vehicle using a road matching algorithm.
FIG. 5 is a flowchart illustrating the calculation of the first angle and the vertical projection distance according to an embodiment of the present invention.
FIG. 6 is a schematic diagram illustrating an angle between a candidate road segment and a due north direction in an embodiment of the invention.
FIG. 7 is a schematic diagram illustrating an angle between a driving direction of a vehicle and a candidate road segment according to an embodiment of the invention.
Fig. 8 is a schematic structural diagram of a projection of a position point of a vehicle to a road segment according to an embodiment of the present invention.
Fig. 9 is a schematic structural diagram of a projection of a position point of a vehicle to a road section in another embodiment of the invention.
FIG. 10 is a diagram illustrating a relationship between a location point of a vehicle and a candidate road segment according to an embodiment of the present invention.
FIG. 11 is a block diagram of a normalizing fuzzy system according to an embodiment of the present invention.
Description of the reference symbols
21 determining a module;
22, manufacturing a module;
23 an acquisition module;
24, a judging module;
31 a processor;
32 a memory;
S1-S4;
S11-S13;
and S121 to S124.
Detailed Description
The following description of the embodiments of the present invention is provided by way of specific examples, and other advantages and effects of the present invention will be readily apparent to those skilled in the art from the disclosure herein. The invention is capable of other and different embodiments and of being practiced or of being carried out in various ways, and its several details are capable of modification in various respects, all without departing from the spirit and scope of the present invention. It is to be noted that the features in the following embodiments and examples may be combined with each other without conflict.
It should be noted that the drawings provided in the following embodiments are only for illustrating the basic idea of the present invention, and the drawings only show the components related to the present invention rather than the number, shape and size of the components in practical implementation, and the type, quantity and proportion of the components in practical implementation can be changed freely, and the layout of the components can be more complicated.
Compared with the prior art, the vehicle overspeed judging method, the vehicle overspeed judging system, the storage medium and the terminal realize real-time monitoring of the vehicle running speed on the basis of the conventional satellite positioning device, can judge whether the vehicle overspeed under the complex road conditions of overlapping or parallel overhead roads and ground roads and the like, and reduce the vehicle monitoring cost on the basis of ensuring higher accuracy; the road matching precision of the elevated road section area is effectively improved, and vehicles are accurately matched to the accurate driving roads, including elevated roads, ground roads or ground bridges; the software technology is adopted to judge whether the vehicles running on different road sections overspeed at different time periods, so that the overspeed judgment rate is greatly improved, and a driver can be reminded of whether the vehicles overspeed in real time, so that the accident rate is reduced.
As shown in fig. 1, in an embodiment, the method for determining vehicle overspeed of the present invention includes the following steps:
and step S1, determining the current driving road of the vehicle by using a road matching algorithm.
Specifically, the current driving road of the vehicle is determined by a road matching algorithm.
In one embodiment, the driving road includes an elevated road, a ground road and a ground bridge.
Specifically, the current driving road of the vehicle may be on an elevated road, may be on a ground road, or may be on a ground bridge; since the road speed limit value at which the vehicle travels differs for different travel roads, the determination of whether the vehicle is speeding differs.
As shown in fig. 4, in an embodiment, the determining the current driving road of the vehicle by using the road matching algorithm includes the following steps:
and step S11, acquiring the real-time positioning information of the vehicle.
Specifically, real-time positioning information of the vehicle is acquired through a satellite/GPS positioning system of the vehicle.
It should be noted that the real-time positioning information includes current longitude and latitude information of the vehicle, a current driving speed of the vehicle, a location point of the vehicle, an elevation value, and a second included angle between the vehicle and the designated direction.
And step S12, calculating a first included angle between the driving direction of the vehicle and the candidate road section and a vertical projection distance from the vehicle to the candidate road section based on the real-time positioning information.
It should be noted that the number of the candidate links is at least one.
As shown in fig. 5, in an embodiment, the calculating a first included angle between the driving direction of the vehicle and a candidate road segment and a vertical projection distance from the vehicle to the candidate road segment based on the real-time positioning information includes the following steps:
and S121, acquiring the current longitude and latitude information of the vehicle and a second included angle between the vehicle and the designated direction based on the real-time positioning information.
Specifically, the true north direction is assumed to be the designated direction, and the explanation is made with the true north direction as the designated direction hereinafter.
And S122, calculating a third included angle between the candidate road section and the specified direction according to the longitude and latitude information of the candidate road section.
As shown in FIG. 6, assume that the longitude and latitude of A, B two points on a candidate road segment are A (a)lat，alon)、B(blat，blon) So that the longitude and latitude of the C point is C (C)lat，clon) The solving formula of the third included angle theta between the candidate road section and the due north direction is as follows:
the third included angle calculated according to the above formula is calculated as follows according to different conditions:
and S123, calculating the first included angle based on the second included angle and the third included angle.
As shown in fig. 7, the driving direction of the point P to be matched (the position point of the vehicle) is indicated by arrows in the figure, and it is assumed that three candidate road segments, ab, bc, and cd respectively exist near the point P to be matched; calculating an angle (a third angle) between the road section ab and the due north direction according to the step S122, and recording as θ3The angle between the point P to be matched and the due north direction (the second angle between the vehicle and the designated direction) is recorded as θ4Then the clip of point P to be matched and road section abAngle (first included angle), noted θ1The calculation is performed according to the following formula:
and similarly, the included angle between the point P to be matched and the road section bc and the included angle between the point P to be matched and the road section cd can be calculated.
And step S124, calculating the vertical projection distance according to the current longitude and latitude information and the longitude and latitude information of the candidate road section.
Assuming that the point P to be matched is located in the vicinity of a road segment, the following two cases exist in the calculation of the projection distance:
as shown in fig. 8, the projection point of the point P to be matched on a certain road segment is located in the road segment, and the vertical projection distance d is equal to the linear distance from the point P to be matched to the projection point.
As shown in fig. 9, the projection point of the point P to be matched on a certain road segment is not located in the road segment, but located on the extension line of the road, and the vertical projection distance d from the point P to be matched to the road segment is equal to the end point distance from the point P to be matched to the closer end of the road segment.
As shown in FIG. 10, assume that the latitude and longitude coordinates (x) of the start node A of a candidate link L are knowna，ya) Latitude and longitude coordinates (x) of the terminating node Bb，yb) Longitude and latitude coordinates (x) of the point P to be matchedp，yp) At this time, the vertical projection distance from the point P to be matched to the road section L is calculated by adopting the following formula:
step S13, inputting the first included angle, the vertical projection distance and the elevation value in the real-time positioning information into a normalization fuzzy system, enabling the normalization fuzzy system to output a normalization fuzzification value, and determining the current driving road from the candidate road section according to the normalization fuzzification value.
Specifically, the driving road of the vehicle is precisely matched by using the normalized fuzzy system of the three factors of the calculated included angle (the first included angle between the driving direction of the vehicle and the candidate road section), the vertical projection distance from the vehicle to the candidate road section and the elevation value in the real-time positioning information of the vehicle.
As shown in fig. 11, a normalized blur value function λ is introduced in the normalized blur system, and the normalized blur value function is expressed as:
wherein error is an average error value of the positioning system; d is the vertical projection distance from the vehicle to the candidate road section; theta is a first included angle between the driving direction of the vehicle and the candidate road section; h is the elevation value of the position point of the vehicle; h is an elevation value of the road network information; mu.s1、μ2And mu3The vertical projection distance, the first included angle and the elevation value are respectively weighted in the normalization fuzzification value function.
It should be noted that in one embodiment, μ is empirically derived1＝0.6，μ2＝0.2，μ3＝0.2。
Further, the normalization fuzzification value λ is used for describing the matching degree of the position of the vehicle and a road, and normalization fuzzification is performed by using floating point numbers in the (0, 1) interval, and the closer the normalization fuzzification value λ is to 1, the more likely the position point is located on the road.
And step S2, according to the electronic map, the longitude and latitude information of the driving road and the interface program of the electronic map, making road speed limit files corresponding to different driving roads.
It should be noted that the road speed limit files corresponding to different driving roads include: the method comprises the following steps of (1) obtaining a road speed limit file corresponding to an elevated road, a road speed limit file corresponding to a ground road and a road speed limit file corresponding to a ground bridge; specifically, the road speed limit file includes a road speed limit value.
In an embodiment, the making the road speed limit file according to the electronic map, the longitude and latitude information of the driving road, and the interface program of the electronic map includes: and extracting road speed limit values from the electronic map according to the longitude and latitude information, and establishing speed limit databases corresponding to different driving roads.
And step S3, acquiring the current running speed of the vehicle.
In one embodiment, the obtaining the current driving speed of the vehicle includes: and acquiring the current running speed from the satellite positioning information of the vehicle.
It should be noted that, since the above steps S1, S2 and S3 do not have a certain sequence, the execution sequence of steps S1, S2 and S3 is not a condition for limiting the present invention.
And step S4, comparing the current driving speed with the road speed limit value corresponding to the current driving road to judge whether the vehicle runs overspeed or not.
Specifically, after a current running road of the vehicle and a road speed limit value of the current running road are determined, the road speed limit value is compared with the current running speed of the vehicle; if the road speed limit value is greater than the current running speed, the vehicle is indicated to be overspeed; on the contrary, if the road speed limit is less than or equal to the current running speed, the vehicle is not overspeed.
In an embodiment, the method for determining vehicle overspeed further includes: and when the current running speed is greater than the road speed limit value, prompting the driver that the speed is overspeed.
Specifically, when the current running speed of the vehicle is greater than the road speed limit value, the driver is reminded of overspeed through the navigation device of the vehicle.
The invention relates to a data analysis processing technology for judging whether a vehicle is overspeed or not through a specific model and an algorithm based on a computer software technology, wherein overspeed judgment is an important technical guarantee for reducing the occurrence rate of vehicle safety accidents; according to vehicle positioning information acquired by a Beidou/GPS satellite positioning system, the road matching precision under complex conditions of overhead and road surface overlapping, overlapping or parallel and the like is improved by utilizing an algorithm, a running vehicle is accurately matched to a corresponding road section, then the running speed of the vehicle is compared with the speed limit of the matched optimal road section, and finally whether the vehicle runs at an overspeed or not is judged.
It should be noted that the protection scope of the method for determining vehicle overspeed according to the present invention is not limited to the execution sequence of steps listed in the embodiment, and all the solutions implemented by adding, subtracting, and replacing steps in the prior art according to the principle of the present invention are included in the protection scope of the present invention.
As shown in fig. 2, in one embodiment, the system for determining vehicle overspeed according to the present invention includes a determining module 21, a producing module 22, an obtaining module 23 and a determining module 24.
The determination module 21 is configured to determine a current driving road of the vehicle by using a road matching algorithm.
The manufacturing module 22 is used for manufacturing road speed limit files corresponding to different driving roads according to the electronic map, the longitude and latitude information of the driving roads and the interface program of the electronic map; the road speed limit file comprises a road speed limit value.
The obtaining module 23 is configured to obtain a current running speed of the vehicle.
The judging module 24 is configured to compare the current driving speed with a road speed limit value corresponding to the current driving road, so as to judge whether the vehicle is overspeed.
It should be noted that the structures and principles of the determining module 21, the creating module 22, the obtaining module 23, and the determining module 24 correspond to the steps in the vehicle overspeed determining method one by one, and therefore, the description thereof is omitted.
It should be noted that the division of the modules of the above system is only a logical division, and the actual implementation may be wholly or partially integrated into one physical entity, or may be physically separated. And these modules can be realized in the form of software called by processing element; or may be implemented entirely in hardware; and part of the modules can be realized in the form of calling software by the processing element, and part of the modules can be realized in the form of hardware. For example, the x module may be a processing element that is set up separately, or may be implemented by being integrated in a chip of the system, or may be stored in a memory of the system in the form of program code, and the function of the x module may be called and executed by a processing element of the system. Other modules are implemented similarly. In addition, all or part of the modules can be integrated together or can be independently realized. The processing element described herein may be an integrated circuit having signal processing capabilities. In implementation, each step of the above method or each module above may be implemented by an integrated logic circuit of hardware in a processor element or an instruction in the form of software.
For example, the above modules may be one or more integrated circuits configured to implement the above methods, such as: one or more Application Specific Integrated Circuits (ASICs), or one or more Digital Signal Processors (DSPs), or one or more Field Programmable Gate Arrays (FPGAs), etc. For another example, when one of the above modules is implemented in the form of a Processing element scheduler code, the Processing element may be a general-purpose processor, such as a Central Processing Unit (CPU) or other processor capable of calling program code. For another example, these modules may be integrated together and implemented in the form of a system-on-a-chip (SOC).
The storage medium of the present invention stores thereon a computer program that realizes the above-described vehicle overspeed discrimination method when executed by a processor. The storage medium includes: various media that can store program codes, such as ROM, RAM, magnetic disk, U-disk, memory card, or optical disk.
As shown in fig. 3, the terminal of the present invention includes a processor 31 and a memory 32.
The memory 32 is used for storing computer programs. Preferably, the memory 32 comprises: various media that can store program codes, such as ROM, RAM, magnetic disk, U-disk, memory card, or optical disk.
The processor 31 is connected to the memory 32 and is configured to execute the computer program stored in the memory 32, so that the terminal executes the above-mentioned method for determining whether the vehicle is overspeed.
Preferably, the Processor 31 may be a general-purpose Processor, including a Central Processing Unit (CPU), a Network Processor (NP), and the like; the integrated Circuit may also be a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), a Field Programmable Gate Array (FPGA) or other Programmable logic device, discrete Gate or transistor logic device, or discrete hardware components.
It should be noted that the vehicle overspeed judging system of the present invention can implement the vehicle overspeed judging method of the present invention, but the implementing device of the vehicle overspeed judging method of the present invention includes, but is not limited to, the structure of the vehicle overspeed judging system as illustrated in the present embodiment, and all structural modifications and substitutions of the prior art made according to the principle of the present invention are included in the protection scope of the present invention.
In summary, compared with the prior art, the method, the system, the storage medium and the terminal for judging the vehicle overspeed of the invention realize real-time monitoring of the vehicle running speed on the basis of the existing satellite positioning device, can judge whether the vehicle overspeed under the complex road conditions of overlapping or parallel of an elevated road and a ground road and the like, and reduce the vehicle monitoring cost on the basis of ensuring higher accuracy; the road matching precision of the elevated road section area is effectively improved, and vehicles are accurately matched to the accurate driving roads, including elevated roads, ground roads or ground bridges; the software technology is adopted to judge whether the vehicles running on different road sections overspeed at different time periods, so that the overspeed judgment rate is greatly improved, and a driver can be reminded of whether the vehicles overspeed in real time, so that the accident rate is reduced. Therefore, the invention effectively overcomes various defects in the prior art and has high industrial utilization value.
The foregoing embodiments are merely illustrative of the principles and utilities of the present invention and are not intended to limit the invention. Any person skilled in the art can modify or change the above-mentioned embodiments without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which can be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.
Claims (10)
1. A vehicle overspeed judging method is characterized by comprising the following steps:
determining the current driving road of the vehicle by using a road matching algorithm;
according to the electronic map, the longitude and latitude information of the driving road and the interface program of the electronic map, the corresponding difference is made
A road speed limit file of a driving road; the road speed limit file comprises a road speed limit value;
acquiring the current running speed of the vehicle;
comparing the current running speed with the road speed limit value corresponding to the current running road so as to compare the vehicle with the current running speed
Whether the vehicle is running at an overspeed is judged.
2. The vehicle overspeed discrimination method according to claim 1, wherein said determining the current driving road of the vehicle by using the road matching algorithm comprises the steps of:
acquiring real-time positioning information of the vehicle;
calculating a first included angle between the driving direction of the vehicle and a candidate road section and a vertical projection distance from the vehicle to the candidate road section based on the real-time positioning information;
and inputting the first included angle, the vertical projection distance and the elevation value in the real-time positioning information into a normalization fuzzy system, so that the normalization fuzzy system outputs a normalization fuzzification value, and the current driving road is determined from the candidate road section according to the normalization fuzzification value.
3. The method according to claim 2, wherein the step of calculating a first included angle between the driving direction of the vehicle and a candidate road segment and a vertical projection distance of the vehicle to the candidate road segment based on the real-time positioning information comprises the steps of:
acquiring current longitude and latitude information of the vehicle and a second included angle between the vehicle and the designated direction based on the real-time positioning information;
calculating a third included angle between the candidate road section and the specified direction according to the longitude and latitude information of the candidate road section;
calculating the first included angle based on the second included angle and the third included angle;
and calculating the vertical projection distance according to the current longitude and latitude information and the longitude and latitude information of the candidate road section.
4. The method for determining whether a vehicle is speeding according to claim 1, wherein the step of creating a road speed limit file according to an electronic map, longitude and latitude information of a driving road and an interface program of the electronic map comprises: and extracting road speed limit values from the electronic map according to the longitude and latitude information, and establishing speed limit databases corresponding to different driving roads.
5. The vehicle overspeed discrimination method according to claim 1, wherein said obtaining a current running speed of said vehicle includes: and acquiring the current running speed from the satellite positioning information of the vehicle.
6. The vehicle overspeed discrimination method according to claim 1, further comprising: and when the current running speed is greater than the road speed limit value, prompting the driver that the speed is overspeed.
7. The vehicle overspeed discrimination method according to claim 1, wherein said traveling road includes an elevated road, a ground road, and a ground bridge.
8. A vehicle overspeed discrimination system, comprising: the device comprises a determining module, a manufacturing module, an obtaining module and a judging module;
the determining module is used for determining the current driving road of the vehicle by using a road matching algorithm;
the manufacturing module is used for manufacturing the electronic map according to the electronic map, the longitude and latitude information of the driving road and the interface program of the electronic map
Making road speed limit files corresponding to different driving roads; the road speed limit file comprises a road speed limit value;
the acquisition module is used for acquiring the current running speed of the vehicle;
the judging module is used for carrying out the current running speed and the road speed limit value corresponding to the current running road
And comparing the vehicle speed and the speed to judge whether the vehicle runs at an overspeed or not.
9. A storage medium having a computer program stored thereon, wherein the computer program, when executed by a processor, implements the vehicle overspeed discrimination method according to any one of claims 1 to 7.
10. A terminal, comprising: a processor and a memory;
the memory is used for storing a computer program;
the processor is configured to execute the computer program stored in the memory to cause the terminal to perform claim 1
The method for determining an overspeed of a vehicle according to any one of claims 7.
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