CN108492563B - Overspeed event detection method based on average speed - Google Patents

Overspeed event detection method based on average speed Download PDF

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CN108492563B
CN108492563B CN201810324022.1A CN201810324022A CN108492563B CN 108492563 B CN108492563 B CN 108492563B CN 201810324022 A CN201810324022 A CN 201810324022A CN 108492563 B CN108492563 B CN 108492563B
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overspeed
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speed
gps
event
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CN108492563A (en
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付川云
刘海玥
夏亮
刘林才
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Southwest Jiaotong University
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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
    • G08G1/0108—Measuring and analyzing of parameters relative to traffic conditions based on the source of data
    • G08G1/0112—Measuring and analyzing of parameters relative to traffic conditions based on the source of data from the vehicle, e.g. floating car data [FCD]
    • 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
    • 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
    • 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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Abstract

The invention discloses an overspeed event detection method based on average speed, which comprises the following steps: describing an overspeed event by using the states of two GPS track points with the average speed larger than a speed limit value; calculating the distance between two GPS track points; determining the interval duration of two GPS track points describing an overspeed event according to the GPS data sampling interval time; calculating an average speed; designing an overspeed event detection algorithm based on average speed; collecting vehicle GPS track data, speed instrument panel data, road speed limit values, overspeed illegal records and other data; determining the number of interval time between two GPS track points describing an overspeed event; overspeed event related information is determined. The invention can accurately judge the overspeed behavior of the driver, thereby interfering the overspeed behavior more effectively.

Description

Overspeed event detection method based on average speed
Technical Field
The invention relates to the field of traffic safety and management, in particular to an overspeed incident detection method based on average speed.
Background
Speeding events are a ubiquitous traffic problem in countries throughout the world. An investigation by the world health organization has shown that about 40-50%, and sometimes as much as 80%, of the drivers in high income countries are speeding; there is a similar proportion of speeding drivers in medium and low income countries, and the proportion may be higher. Speeding not only increases the likelihood of a traffic accident, but also exacerbates the severity of the traffic accident. In developed countries, over-speed causes nearly 30% of deaths. For example, in the uk, speeding violations result in up to 28% of deaths. In australia, this proportion is 30%. In China, traffic accidents caused by overspeed illegal events and life and property losses caused by the overspeed illegal events always stay in the front of various traffic illegal events.
Currently, intervention on speeding events relies primarily on speeding enforcement, which relies primarily on speed snapshotting. It is noted that the position of the speed camera is fixed, and it is difficult to monitor all the overspeed illegal behaviors of each driver on different road sections, so that the phenomenon of "overspeed is not monitored and overspeed is monitored without monitoring" occurs. It follows that it is difficult to effectively contain an overspeed event with a speed camera alone.
In order to sufficiently interfere with the overspeed behavior, it is necessary to comprehensively grasp all the overspeed behaviors of the vehicle and the overspeed condition of the entire road network. With the development and the use of the GPS technology, the overspeed behavior of the driver can be dynamically monitored according to the GPS track data, and the overspeed condition on the road network can be comprehensively mastered. Since 2005, GPS track data was used to dynamically monitor driver speed violations, such as vehicle speed warnings. However, the existing research and application basically judges the overspeed only by the speed of a GPS track point, and the error is large. Therefore, a new method for detecting an overspeed event based on GPS trajectory data is urgently needed to accurately determine the overspeed behavior of the driver, so as to intervene in the overspeed behavior more effectively.
Disclosure of Invention
The invention aims to solve the technical problem of providing an average speed-based overspeed event detection method, which solves the problems that the traditional detection method cannot detect overspeed illegal behaviors of the same driver in different places, so that the overspeed illegal conditions on a road network are difficult to master comprehensively, and the overspeed event is judged to have a great error only by using the speed information in a single GPS track point, so that the overspeed behavior of the driver is judged accurately, and the overspeed behavior is intervened more effectively.
In order to solve the technical problems, the invention adopts the technical scheme that:
an overspeed event detection method based on average speed describes an overspeed event by using two GPS track point states of which the average speed is greater than a speed limit value, namely: the overspeed event is started from the position where the speed is greater than the speed limit value to the position where the speed is less than or equal to the speed limit value; the overspeed event is regarded as a line event containing a start point and a stop point and is described by the states of two GPS track points with the average speed larger than a speed limit value; the overspeed event SE is represented as:
Figure BDA0001626003070000021
wherein the content of the first and second substances,
Figure BDA0001626003070000022
is GPS track point PiAnd Pi+nMean velocity between, VilimitIndicating a speed limit value;
the detection method specifically comprises the following steps:
step 1: calculating and describing overspeed event GPS track point PiAnd Pi+nAverage velocity in between
Figure BDA0001626003070000023
Figure BDA0001626003070000024
In the formula, Di,i+nIs two GPS track points PiAnd Pi+nThe distance of travel therebetween; t is the interval duration of two GPS track points; n is the number of interval time between two GPS track points, and n is more than or equal to 1; the time interval, i.e. the GPS sampling interval time, is denoted by Δ t;
step 2: according to GPS track point PiAnd Pi+nDetermining the road section where the two GPS track points are located according to the longitude and latitude coordinates, and acquiring the speed limit value V of the road sectionilimit；
And step 3: comparing average speeds
Figure BDA0001626003070000025
Speed limit value V of road sectionilimitSize of (1), if
Figure BDA0001626003070000026
Then the GPS track point PiAnd Pi+nAnd the track points between the two units are marked as an overspeed event unit;
and 4, step 4: identifying overspeed event units in the GPS track, wherein for the isolated overspeed event units, each overspeed event unit is an overspeed event together; for adjacent overspeed event units, combining the overspeed event units to be recorded as a overspeed event;
and 5: determining the total number of overspeed events in a GPS track, the occurrence time and position of each overspeed event, the overspeed range and the duration;
the total number of the overspeed events is the sum of all the overspeed events in the GPS track; for a certain overspeed event, it contains GPS trace points Pi，Pi+1，L，Pi+nThe overspeed event occurrence time is denoted as { t }i,ti+n}; the position of the overspeed event is defined by a GPS track point PiPosition LiAnd Pi+nPosition Li+nRepresents, i.e. { Li,Li+n}; the overspeed range is calculated by:
Figure BDA0001626003070000027
in the formula,. DELTA.ViAn overspeed range for an initial overspeed event;
Figure BDA0001626003070000031
is GPS track point PiAnd Pi+nThe average speed of the first time is the speed value of the ith overspeed event;
the overspeed event duration being the GPS trace point PiAnd Pi+nThe interval duration T between, is calculated by the following formula:
T＝ti+n-ti＝nΔt
in the formula, ti+nFor GPS track point Pi+nA time of day; t is tiFor GPS track point PiA time of day; Δ t is the GPS sampling interval time.
Further, two GPS track points PiAnd Pi+nThe stroke distance between the two is specifically as follows:
setting GPS track point PiHas latitude and longitude coordinates of (Lon)i,Lati) Its adjacent GPS track point Pi+1Has latitude and longitude coordinates of (Lon)i+1,Lati+1) Distance of travel D between themi,i+1Expressed as:
Di,i+1＝R×arccos(Ci,i+1)
Figure BDA0001626003070000032
wherein R represents the earth radius; ci,i+1Cosine representing the center angle; then GPS track point PiAnd Pi+nThe travel distance between is expressed as:
Figure BDA0001626003070000033
further, the interval duration of the two GPS track points is specifically:
setting the GPS sampling interval time as delta t, then the GPS track point PiAnd Pi+nThe interval duration T between is expressed as:
T＝n×Δt/3600
in the formula, the number of the interval time between n two GPS track points is more than or equal to 1.
Further, a speed limit value V of a road section where an overspeed illegal position is located is obtained through a driving experimentilimitThe method specifically comprises the following steps: 1) selecting a vehicle having an onboard GPS device; 2) selecting a plurality of driving paths in advance; 3) before the vehicle runs, a camera is erected on a rear seat, the angle of the camera is adjusted to align with a speed instrument panel, and the camera is manually protected and fixed by a tester; 4) starting a camera to record a speed value on a speed instrument panel of the vehicle at the beginning of starting the vehicle, and simultaneously recording a speed limit value of a road section passing along the way by another experimenter; 5) and after the pre-selected path is driven, exporting the GPS data and the speed data on the vehicle speed instrument panel, and sorting the speed limit value records of the passed path section.
Further, the traffic police department collects the records of the overspeed violation of the vehicle to obtain the speed limit value V of the road section where the overspeed violation position is locatedilimitThe method specifically comprises the following steps: 1) collecting the overspeed illegal records of the operating vehicles by a traffic police department; 2) screening GPS track data of corresponding vehicles in corresponding time intervals in a traffic police department according to the occurrence time of the overspeed violation of the selected commercial vehicle; 3) according to the occurrence place of the selected operating vehicle overspeed violation, the speed limit value of the road section where the place is located is determined through field investigation.
Further, the number n of the interval time between two GPS track points describing an overspeed event is determined based on driving experiment data, and specifically:
through video playback of a vehicle speed instrument panel, and by combining speed limit values of road sections, manually finding out all overspeed events of a vehicle running path, including occurrence time and place, and expressing the overspeed events by using a set omega;
preliminarily taking the average speed between two adjacent GPS track points as a judgment condition; detecting overspeed events in the running GPS track of the vehicle according to the designed overspeed event detection algorithm, and using the set omega1Represents; will set omega1If the set is compared with the set omega1If the set omega is included, the number of interval time between two GPS track points for calculating the average speed is increased, the average speed is recalculated, and the overspeed event in the GPS track of the vehicle is detected until the set omega is reached1Until the set omega is equal, the number of the interval time between two GPS track points at the moment is represented as n.
Further, the number n of the interval time between two GPS track points describing the overspeed incident is determined based on the investigation data of the traffic police department, and the method specifically comprises the following steps:
detecting all overspeed events in the running GPS track of the commercial vehicle by using the set psi1Represents; set Ψ1Set Ψ of records of speeding violation for the same operating vehicle2Comparing if set Ψ1With the set Ψ2If the two GPS track points are separated or intersected, the number of the interval time between the two GPS track points in the overspeed event dynamic detection algorithm is increased, and the overspeed event in the running GPS track of the commercial vehicle is detected again until the set psi1Containing the set Ψ2The number of interval times between two GPS trace points at this time is denoted by n.
Compared with the prior art, the invention has the beneficial effects that:
1) the invention regards the overspeed incident as a line incident containing a starting point and a stopping point, considers dynamically obtaining a road speed limit value according to GPS track data, calculates the average speed between two GPS track points, identifies and searches the average speed larger than the road speed limit value, designs an overspeed incident detection algorithm based on the average speed, obtains vehicle GPS track data, speed instrument panel data, the road speed limit value and overspeed illegal records through driving experiments and/or traffic police investigation, trains the overspeed incident detection algorithm on the basis to determine the optimal interval time number between the two GPS track points calculating the average speed, and further checks the precision of the overspeed incident dynamic detection algorithm, thereby forming an overspeed incident dynamic detection method based on the average speed and obtaining the overspeed incident information in the vehicle running track.
2) According to the invention, all overspeed events in the vehicle traveling are detected through the vehicle GPS track data, so that the deficiency of fixed-point snapshot of the speed camera can be made up, and the distribution condition of the overspeed events on a road network can be comprehensively reflected, thereby facilitating the intervention of overspeed illegal behaviors, improving the road driving safety and embodying the practical application value.
3) The invention fully considers the error of GPS track data, judges the overspeed event by the average speed between two GPS track points, and improves the reliability and accuracy of overspeed event detection.
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FIG. 1 is a general flow diagram of an average speed based overspeed event detection method of the present invention;
FIG. 2 is a schematic diagram illustrating an average speed based overspeed event.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
The method comprises the steps of overspeed event description, overspeed event dynamic detection algorithm design based on average speed, data such as vehicle running GPS track data and overspeed illegal records are collected through driving experiments and traffic police department investigation, the optimal interval time number between two GPS track points in the overspeed event dynamic detection algorithm is determined, the precision of the overspeed event dynamic detection algorithm is checked, and the overspeed event detection realized by integrating the five key operation steps is as follows:
firstly, describing an overspeed event by using the states of two GPS track points with the average speed larger than a speed limit value; the speed overrun event is started from a position where the speed is greater than the speed limit value to a position where the speed is less than or equal to the speed limit value. Thus, an overspeed eventAnd regarding the linear event containing the starting point and the stopping point, and describing the state of two GPS track points with the average speed larger than the speed limit value. Specifically, for two GPS track points P on one trackiAnd Pi+n(i ═ 1,2, L, + ∞, n ≧ 1), the average speed thereof
Figure BDA0001626003070000051
Is composed of
Figure BDA0001626003070000052
In the formula, Di,i+nIs two GPS track points PiAnd Pi+nDistance between trips, unit km; t is the interval duration of two GPS track points, and the unit h. Thus, the overspeed event SE is represented as
Figure BDA0001626003070000053
In the formula, VilimitIndicating the speed limit.
Based on the description of the overspeed event, the following detection steps are carried out:
the method comprises the following steps: calculating distance between two GPS track points of overspeed event
Setting GPS track point PiHas latitude and longitude coordinates of (Lon)i,Lati) Its adjacent GPS track point Pi+1Has latitude and longitude coordinates of (Lon)i+1,Lati+1) Distance of travel D between themi,i+1Can be expressed as
Di,i+1＝R×arccos(Ci,i+1)
Figure BDA0001626003070000061
In the formula, R represents the radius of the earth and takes the value of 6371.004 km; ci,i+1Representing the cosine of the central angle.
Thus, GPS trace point PiAnd Pi+nThe distance of travel therebetween can be expressed as
Figure BDA0001626003070000062
Step two: determining the interval duration of two GPS track points describing an overspeed event according to the GPS data sampling interval time
Setting the GPS data sampling interval time as delta t(s), the GPS track point PiAnd Pi+nThe interval duration T between can be expressed as
T＝n×Δt/3600
In the formula, n represents the number of interval time of GPS data sampling (n is more than or equal to 1).
Step three: calculating the average speed, determining the speed limit value of the road section according to the positions of the two GPS track points, and judging the overspeed event, wherein the method specifically comprises the following steps:
1. calculating GPS track point PiAnd Pi+nAverage velocity in between
Figure BDA0001626003070000063
2. According to GPS track point PiAnd Pi+nDetermining the road section where the two GPS track points are located according to the longitude and latitude coordinates, and acquiring the speed limit value V of the road sectionilimit(ii) a 3. Comparing average speeds
Figure BDA0001626003070000064
Speed limit value V of road sectionilimitSize of (1), if
Figure BDA0001626003070000065
Then the GPS track point PiAnd Pi+nAnd the track points between the two units are marked as an overspeed event unit; 4. identifying overspeed event units in the GPS track, wherein for the isolated overspeed event units, each overspeed event unit is an overspeed event together; for adjacent overspeed event units, combining the overspeed event units to be recorded as a overspeed event; 5. and determining the total number of overspeed events in a GPS track according to the overspeed events, the occurrence time and the position of each overspeed event, the overspeed range and the duration.
And the total number of the overspeed events is the number of overspeed GPS track point units in the GPS track.
For one overspeed event unit, the unit comprises a GPS track point Pi，Pi+1，L，Pi+n(i ═ 1,2, L, ∞, n ≧ 1), the overspeed event occurrence time may be expressed as { t ≧ ti,ti+n}; the position of the overspeed event is defined by a GPS track point PiPosition LiAnd Pi+nPosition Li+nRepresents, i.e. { Li,Li+n}; the overspeed range can be calculated by:
Figure BDA0001626003070000071
in the formula,. DELTA.ViAn overspeed range for an initial overspeed event;
Figure BDA0001626003070000072
is not only the GPS track point PiAnd Pi+nThe average speed in between, which is again the speed value of the i-th overspeed event, in km/h.
The overspeed event duration is a GPS trace point PiAnd Pi+nThe interval duration T can be calculated by the following formula:
T＝ti+n-ti＝nΔt
in the formula, ti+nFor GPS track point Pi+nA time of day; t is tiFor GPS track point PiAt a time.
In the invention, vehicle GPS data, speed instrument panel data and road speed limit information can be collected through driving experiments, vehicle overspeed illegal records are collected through a traffic police department, and the speed limit V of the road at the overspeed illegal position is obtained through investigationilimit. The driving experiment data and the data collected by the traffic police department can be used independently or together; and the data are collected by the traffic police part on the basis of using the driving experiment data, so that the detection precision of the overspeed event can be further improved.
The concrete method of the driving experiment comprises the following steps:
selecting a vehicle with a vehicle-mounted GPS device;
selecting a plurality of driving paths in advance;
before the vehicle runs, a camera is erected on a rear seat, the angle of the camera is adjusted to align with a speed instrument panel, and the camera is manually protected and fixed by a testing personnel;
starting the vehicle, starting a camera to record a speed value on a speed instrument panel of the vehicle, and simultaneously recording a speed limit value of a road section passing along the way by another experimenter;
fifthly, after the pre-selected path is finished, the GPS data and the speed data on the vehicle speed instrument panel are derived, and the speed limit value records of the passed path section are sorted.
The investigation and on-site investigation method of the traffic police department comprises the following steps:
firstly, collecting overspeed illegal records of operating vehicles (such as taxis) by a traffic police department;
secondly, screening GPS track data of the corresponding vehicle in a corresponding time period in a traffic police department according to the occurrence time of the overspeed violation of the selected operating vehicle;
thirdly, according to the place where the selected operation vehicle is overspeed and illegal, the speed limit value of the road section where the place is located is determined through field investigation.
According to a part of collected driving experiments and traffic police department investigation data, an overspeed event detection algorithm based on average speed can be trained to determine the number n of interval time between two GPS track points describing an overspeed event.
(1) Based on driving experiment data
And (3) manually finding out all overspeed events (including occurrence time and place) of the vehicle running path through video playback of a vehicle speed instrument panel and by combining speed limit values of the road sections, and expressing the overspeed events by using a set omega.
Preliminarily taking the average speed between two adjacent GPS track points as a judgment condition; detecting overspeed events in the running GPS track of the vehicle according to the designed overspeed event dynamic detection algorithm, and using the set omega1Represents; will set omega1If the set is compared with the set omega1If the set omega is included, the number of interval time between two GPS track points for calculating the average speed is increased, the average speed is recalculated, and the super-speed in the GPS track of the vehicle running is detectedFast event up to set Ω1Until the set omega is equal to (overlapped with) the set omega, the number of the interval time between two GPS track points at the moment is expressed as n (n is more than or equal to 1).
(2) Based on traffic police department research data
Detecting all overspeed events in running GPS tracks of commercial vehicles by using an overspeed event dynamic detection algorithm (the number of interval time between two GPS track points is n, n is more than or equal to 1) obtained based on running experimental data training, and using a set psi1Represents; set Ψ1Set Ψ of records of speeding violation for the same operating vehicle2Comparing if set Ψ1With the set Ψ2If the two GPS track points are separated or intersected, the number of the interval time between the two GPS track points in the overspeed event dynamic detection algorithm is increased, and the overspeed event in the running GPS track of the commercial vehicle is detected again until the set psi1Containing the set Ψ2The number of the interval time between two GPS track points at the moment is expressed as m (m is more than or equal to n). Here, m and n have the same meaning, but the number of the interval time between two GPS track points obtained based on the driving experiment data alone is represented by n, the number of the interval time between two GPS track points obtained by combining the driving experiment data and the traffic police department investigation data is represented by m, and the number precision of the interval time between two GPS track points obtained by combining the driving experiment data and the traffic police department investigation data is higher.

Claims (1)

1. An overspeed event detection method based on average speed is characterized in that two GPS track point states with the average speed larger than a speed limit value are used for describing an overspeed event, namely: the overspeed event is started from the position where the speed is greater than the speed limit value to the position where the speed is less than or equal to the speed limit value; the overspeed event is regarded as a line event containing a start point and a stop point and is described by the states of two GPS track points with the average speed larger than a speed limit value; the overspeed event SE is represented as:
Figure FDA0002603046500000011
wherein the content of the first and second substances,
Figure FDA0002603046500000012
is GPS track point PiAnd Pi+nMean velocity between, VilimitIndicating a speed limit value;
the detection method specifically comprises the following steps:
step 1: calculating and describing overspeed event GPS track point PiAnd Pi+nAverage velocity in between
Figure FDA0002603046500000013
In the formula, Di,i+nIs two GPS track points PiAnd Pi+nThe distance of travel therebetween; t is the interval duration of two GPS track points; n is the number of interval time between two GPS track points, and n is more than or equal to 1; the time interval, i.e. the GPS sampling interval time, is denoted by Δ t;
step 2: according to GPS track point PiAnd Pi+nDetermining the road section where the two GPS track points are located according to the longitude and latitude coordinates, and acquiring the speed limit value V of the road sectionilimit；
And step 3: comparing average speeds
Figure FDA0002603046500000014
Speed limit value V of road sectionilimitSize of (1), if
Figure FDA0002603046500000015
Then the GPS track point PiAnd Pi+nAnd the track points between the two units are marked as an overspeed event unit;
and 4, step 4: identifying overspeed event units in the GPS track, wherein for the isolated overspeed event units, each overspeed event unit is an overspeed event together; for adjacent overspeed event units, combining the overspeed event units to be recorded as a overspeed event;
and 5: determining the total number of overspeed events in a GPS track, the occurrence time and position of each overspeed event, the overspeed range and the duration;
the total number of the overspeed events is the sum of all the overspeed events in the GPS track; for a certain overspeed event, it contains a GPS trajectoryPoint Pi，Pi+1，…，Pi+nThe overspeed event occurrence time is denoted as { t }i,ti+n}; the position of the overspeed event is defined by a GPS track point PiPosition LiAnd Pi+nPosition Li+nRepresents, i.e. { Li,Li+n}; the overspeed range is calculated by:
Figure FDA0002603046500000016
in the formula,. DELTA.ViAn overspeed range for an initial overspeed event;
Figure FDA0002603046500000017
is GPS track point PiAnd Pi+nThe average speed of the first time is the speed value of the ith overspeed event;
the overspeed event duration being the GPS trace point PiAnd Pi+nThe interval duration T between, is calculated by the following formula:
T＝ti+n-ti＝nΔt
in the formula, ti+nFor GPS track point Pi+nA time of day; t is tiFor GPS track point PiA time of day; delta t is GPS sampling interval time;
two GPS track points PiAnd Pi+nThe stroke distance between the two is specifically as follows:
setting GPS track point PiHas latitude and longitude coordinates of (Lon)i,Lati) Its adjacent GPS track point Pi+1Has latitude and longitude coordinates of (Lon)i+1,Lati+1) Distance of travel D between themi,i+1Expressed as:
Di,i+1＝R×arccos(Ci,i+1)
Figure FDA0002603046500000021
wherein R represents the earth radius; ci,i+1Cosine representing the center angle; then GPS track point PiAnd Pi+nThe travel distance between is expressed as:
Figure FDA0002603046500000022
the interval duration of the two GPS track points is specifically as follows:
setting the GPS sampling interval time as delta t, then the GPS track point PiAnd Pi+nThe interval duration T between is expressed as:
T＝n×Δt/3600
in the formula, the number of interval time between n two GPS track points is more than or equal to 1;
obtaining the speed limit value V of the road section where the overspeed illegal position is located through a driving experimentilimitThe method specifically comprises the following steps:
1) selecting a vehicle having an onboard GPS device; 2) selecting a plurality of driving paths in advance; 3) before the vehicle runs, a camera is erected on a rear seat, the angle of the camera is adjusted to align with a speed instrument panel, and the camera is manually protected and fixed by a tester; 4) starting a camera to record a speed value on a speed instrument panel of the vehicle at the beginning of starting the vehicle, and simultaneously recording a speed limit value of a road section passing along the way by another experimenter; 5) after the pre-selected path is driven, exporting GPS data and speed data on a vehicle speed instrument panel, and sorting speed limit records of the passed path section;
the traffic police department collects the records of the overspeed violation of the vehicle to obtain the speed limit value V of the road section where the overspeed violation position is locatedilimitThe method specifically comprises the following steps:
1) collecting the overspeed illegal records of the operating vehicles by a traffic police department; 2) screening GPS track data of corresponding vehicles in corresponding time intervals in a traffic police department according to the occurrence time of the overspeed violation of the selected commercial vehicle; 3) according to the occurrence place of the selected operating vehicle overspeed violation, determining the speed limit value of the road section where the place is located through field investigation;
determining the number n of interval time between two GPS track points describing an overspeed event based on driving experiment data, specifically:
through video playback of a vehicle speed instrument panel, and by combining speed limit values of road sections, manually finding out all overspeed events of a vehicle running path, including occurrence time and place, and expressing the overspeed events by using a set omega;
preliminarily taking the average speed between two adjacent GPS track points as a judgment condition; detecting overspeed events in the running GPS track of the vehicle according to the designed overspeed event detection algorithm, and using the set omega1Represents; will set omega1If the set is compared with the set omega1If the set omega is included, the number of interval time between two GPS track points for calculating the average speed is increased, the average speed is recalculated, and the overspeed event in the GPS track of the vehicle is detected until the set omega is reached1Until the set omega is equal, representing the number of interval time between two GPS track points at the moment as n;
determining the number n of interval time between two GPS track points describing an overspeed event based on traffic police department research data, which specifically comprises the following steps:
detecting all overspeed events in the running GPS track of the commercial vehicle by using the set psi1Represents; set Ψ1Set Ψ of records of speeding violation for the same operating vehicle2Comparing if set Ψ1With the set Ψ2If the two GPS track points are separated or intersected, the number of the interval time between the two GPS track points in the overspeed event dynamic detection algorithm is increased, and the overspeed event in the running GPS track of the commercial vehicle is detected again until the set psi1Containing the set Ψ2Until then, the number of interval time between two GPS track points at the moment is expressed as n; the invention regards the overspeed incident as a line incident containing a starting point and a stopping point, considers dynamically obtaining a road speed limit value according to GPS track data, calculates the average speed between two GPS track points, identifies and searches the average speed larger than the road speed limit value, designs an overspeed incident detection algorithm based on the average speed, obtains vehicle GPS track data, speed instrument panel data, the road speed limit value and overspeed illegal records through driving experiments and/or traffic police investigation, trains the overspeed incident detection algorithm on the basis to determine the optimal interval time number between the two GPS track points calculating the average speed, and further checks the precision of the overspeed incident dynamic detection algorithm, thereby forming an overspeed incident dynamic detection method based on the average speed and obtaining the overspeed incident information in the vehicle running track.
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Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109493448A (en) * 2018-09-26 2019-03-19 平安科技（深圳）有限公司 Driving recording data processing method, device, computer equipment and storage medium
CN109559507A (en) * 2018-11-16 2019-04-02 西南交通大学 A kind of about vehicle excess speed event recognition methods of the net based on history GPS track data
CN113870583B (en) * 2021-11-23 2022-10-25 厦门市美亚柏科信息股份有限公司 Interval overspeed driving detection method and device based on automobile electronic data and storage medium
CN117218859B (en) * 2023-11-09 2024-02-23 中煤科工集团信息技术有限公司 Mining vehicle overspeed measuring and calculating method, system, electronic equipment and storage medium

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002048986A9 (en) * 2000-12-11 2003-05-01 Malcolm Graham Lawrence Highway vehicular traffic flow control
CN104933869A (en) * 2015-05-19 2015-09-23 交通运输部公路科学研究所 Anti-noise type satellite positioning data-based method for identifying vehicle violation behaviors
CN107665591A (en) * 2017-09-14 2018-02-06 王淑芳 A kind of emphasis commerial vehicle is driven over the speed limit monitoring method and system

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7706964B2 (en) * 2006-06-30 2010-04-27 Microsoft Corporation Inferring road speeds for context-sensitive routing
US9117190B2 (en) * 2011-03-31 2015-08-25 United Parcel Service Of America, Inc. Calculating speed and travel times with travel delays
CN102682609A (en) * 2012-01-13 2012-09-19 惠州善领科技有限公司 Speed measurement early warning method and device for road interval
CN103500507B (en) * 2013-09-30 2016-01-13 宝鸡市公安局交通警察支队 Test the speed implementation method and system in Portable movable interval based on global position system and generalized information system
CN104050817B (en) * 2014-05-23 2017-05-10 北京中交兴路信息科技有限公司 Speed limiting information base generation and speed limiting information detection method and system
CN105723242B (en) * 2014-08-26 2018-07-03 微软技术许可有限责任公司 Measure the traffic speed in road network
KR101651776B1 (en) * 2015-03-26 2016-08-26 주식회사 토페스 Enforcement system to using visualization modeling of section driving
CN105448108B (en) * 2015-12-30 2017-10-03 上海经达信息科技股份有限公司 A kind of hypervelocity method of discrimination based on Hidden Markov road network
CN107564297A (en) * 2017-09-11 2018-01-09 安徽实运信息科技有限责任公司 It is a kind of that full-range over speed monitoring system is carried out to highway driving vehicle

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002048986A9 (en) * 2000-12-11 2003-05-01 Malcolm Graham Lawrence Highway vehicular traffic flow control
CN104933869A (en) * 2015-05-19 2015-09-23 交通运输部公路科学研究所 Anti-noise type satellite positioning data-based method for identifying vehicle violation behaviors
CN107665591A (en) * 2017-09-14 2018-02-06 王淑芳 A kind of emphasis commerial vehicle is driven over the speed limit monitoring method and system

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
Taxi driver speeding: Who, when, where and how? A comparative study between Shanghai and New York City;Yizhe Huang 等;《Traffic Injury Prevention》;20180403;全文 *
基于GPS的高速公路车速全程监控方法研究;李娟 等;《测绘工程》;20170131;47-50 *

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