CN108734953A - A kind of lower early warning induction system of urban road intersection countdown effect - Google Patents

A kind of lower early warning induction system of urban road intersection countdown effect Download PDF

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Publication number
CN108734953A
CN108734953A CN201810519627.6A CN201810519627A CN108734953A CN 108734953 A CN108734953 A CN 108734953A CN 201810519627 A CN201810519627 A CN 201810519627A CN 108734953 A CN108734953 A CN 108734953A
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Prior art keywords
vehicle
data
stop line
speed
vms
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Inventor
沈家军
王笑笑
曹淑
黄雪强
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Yangzhou University
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Yangzhou University
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Publication of CN108734953A publication Critical patent/CN108734953A/en
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    • GPHYSICS
    • G08SIGNALLING
    • G08GTRAFFIC CONTROL SYSTEMS
    • G08G1/00Traffic control systems for road vehicles
    • G08G1/01Detecting movement of traffic to be counted or controlled
    • G08G1/0104Measuring and analyzing of parameters relative to traffic conditions
    • G08G1/0108Measuring and analyzing of parameters relative to traffic conditions based on the source of data
    • G08G1/0112Measuring and analyzing of parameters relative to traffic conditions based on the source of data from the vehicle, e.g. floating car data [FCD]
    • GPHYSICS
    • G08SIGNALLING
    • G08GTRAFFIC CONTROL SYSTEMS
    • G08G1/00Traffic control systems for road vehicles
    • GPHYSICS
    • G08SIGNALLING
    • G08GTRAFFIC CONTROL SYSTEMS
    • G08G1/00Traffic control systems for road vehicles
    • G08G1/01Detecting movement of traffic to be counted or controlled
    • G08G1/0104Measuring and analyzing of parameters relative to traffic conditions
    • G08G1/0108Measuring and analyzing of parameters relative to traffic conditions based on the source of data
    • G08G1/0116Measuring and analyzing of parameters relative to traffic conditions based on the source of data from roadside infrastructure, e.g. beacons
    • GPHYSICS
    • G08SIGNALLING
    • G08GTRAFFIC CONTROL SYSTEMS
    • G08G1/00Traffic control systems for road vehicles
    • G08G1/01Detecting movement of traffic to be counted or controlled
    • G08G1/0104Measuring and analyzing of parameters relative to traffic conditions
    • G08G1/0108Measuring and analyzing of parameters relative to traffic conditions based on the source of data
    • G08G1/012Measuring and analyzing of parameters relative to traffic conditions based on the source of data from other sources than vehicle or roadside beacons, e.g. mobile networks
    • GPHYSICS
    • G08SIGNALLING
    • G08GTRAFFIC CONTROL SYSTEMS
    • G08G1/00Traffic control systems for road vehicles
    • G08G1/01Detecting movement of traffic to be counted or controlled
    • G08G1/0104Measuring and analyzing of parameters relative to traffic conditions
    • G08G1/0125Traffic data processing
    • GPHYSICS
    • G08SIGNALLING
    • G08GTRAFFIC CONTROL SYSTEMS
    • G08G1/00Traffic control systems for road vehicles
    • G08G1/16Anti-collision systems
    • G08G1/166Anti-collision systems for active traffic, e.g. moving vehicles, pedestrians, bikes
    • GPHYSICS
    • G08SIGNALLING
    • G08GTRAFFIC CONTROL SYSTEMS
    • G08G1/00Traffic control systems for road vehicles
    • G08G1/16Anti-collision systems
    • G08G1/167Driving aids for lane monitoring, lane changing, e.g. blind spot detection

Abstract

A kind of lower early warning induction system of urban road intersection countdown effect, utilize the current green light countdown moment t of central controller real-time reception, the range line value between coordinate and vehicle at default stop line, the displacement of different location vehicle distances stop line, the spacing of adjacent two motor vehicles, travel speed, license plate number under countdown any time are uploaded in the data-analyzing machine in VMS plates through central controller, the data information in data-analyzing machine, central controller is at any time, dynamic substitutes in real time for the variation progress of vehicle operation.Enemy's vehicle and rear car analyze and determine after data-analyzing machine identifies data, induction warning is carried out to vehicle using induction caution system according to analytical judgment result, analysis presentation of information is driven on VMS plates, when spacing is less than range line, vehicle-mounted alarm sends out phonetic warning.The present invention drives selection hesitation for reducing, and reduces traffic conflict, reduces rear-end collision, ensures that driving safety has great importance.

Description

A kind of lower early warning induction system of urban road intersection countdown effect
Technical field
The present invention relates to a kind of lower early warning of the urban road intersection countdown effect being made of VMS plates and vehicle-mounted alarm Inducible system is related to traffic safety alarm technical field.
Background technology
Intersection at Grade of Urban Road is the throat of road traffic, be urban traffic accident multiplely, on the one hand, it is different The motor vehicle in direction is kept straight on and is turned in intersection, and the conflict point of formation is very big to the security implication of driving, another party The otherness in face, driver's decision easily causes traffic accident.To ensure traffic safety, specification traffic order, mostly in intersection Place is arranged traffic lights and shows passage and the stopping guiding traffic flow by light color.However green light countdown signal device Use also bring many problems, especially countdown latter stage is even more the Frequent Accidents moment, mainly causes problems with:1, motor-driven Vehicle accelerated to rob lamp in green light countdown latter stage, started to walk in advance in red light countdown latter stage, the motor vehicle of different directions is also easy to produce punching It is prominent;2, when driving with vehicle, automobile driver can take different Driving Decision-makings, as think can not will by intersection for front truck If selection is slowed down and rear car thinks to select to accelerate with safety intersection, easily cause rear-end collision.To ensure traffic peace Entirely, specification traffic order, we need to induce or warn to the motor vehicle of different location under green light countdown any time, carry For driving information, allow motor vehicle safety stop line is stopped or crossed before stop line and sails out of intersection.
Invention content
The purpose of the present invention is being directed to above-mentioned traffic safety problem, a kind of urban road intersection countdown is provided The lower early warning induction system of effect, by the way that the motor vehicle under any time at stop line different location is guided and warned Show, driver can be reduced and select hesitation, reduce rear-end collision and traffic conflict, ensure driving safety.
The purpose of the present invention is what is be achieved through the following technical solutions:It is pre- under a kind of urban road intersection countdown effect Alert inducible system, characterized in that include the following steps:
(1) column is established at the right side roadside flushed with intersection parking line, VMS plates are placed in column top, vehicle-mounted GPS, vehicle-mounted alarm are placed in vehicle interior, contain central controller, data-analyzing machine in VMS plates, intersection periphery is covered with GPRS wireless-transmission networks, the current green light countdown moment t of central controller real-time reception preset intersect in the central controller Coordinate (x at mouth stop lineo,yo) range line value between vehicle;
(2) it is inscribed when green light countdown is a certain, it, should to obtain vehicle data using the vehicle GPS installed in each car Data include the current position coordinates (x of vehiclei,yo), travel speed vi, license plate number pi, data through GPRS wireless network transmissions extremely In the central controller of VMS plates;
(3) central controller counts the data of acquisition apart from the sequence of stop line from the near to the distant according to each motor vehicle respectively Calculate displacement of any one motor vehicle apart from stop line, the spacing between arbitrary two adjacent motor vehicle, calculation formula is respectively such as Under:
si(i+1)=si+1-si
In formula:I=1,2 ..., n, indicate the 1st vehicle, the 2nd vehicle ... n-th vehicle;
(4) data after central controller is handled by the speed of each car, the displacement away from stop line, license plate number, adjacent two The spacing of vehicle, countdown moment, range line value upload in the data-analyzing machine in VMS plates, during the data information of the above acquisition is Entreat the data in controller, data-analyzing machine that can carry out real-time synchronization replacement with the variation of time;
(5) judge the driving behavior of head vehicle:
Signal recognition device in data-analyzing machine identifies each successively according to apart from the sequence of stop line from the near to the distant Motor vehicle, first identification lift one's head vehicle and correct vehicle is judged, analyze selection by stop line or stop before stop line Only, it is assumed that the data of head vehicle are s1,v1, t is the current countdown moment;
As follows, calculating the distance of P Passable on the basis of present speed, distance, time is:
S=v1t
If 1. s >=s1, then it represents that head vehicle can reach stop line on the basis of present speed;
If 2. s < s1, then it represents that head vehicle cannot reach stop line on the basis of present speed, then count as follows It calculates under current distance, speed, time, selection accelerates that the suggestion speed v of stop line can be reachedIt builds
vIt builds=v1+at
If I, vIt builds≤vLimit, then it represents that suggest that speed can reach stop line with this;
If II, vIt builds> vLimit, then it represents that motor vehicle can not reach stop line on the basis of no more than speed limit, and should select to subtract Speed stops before stop line;
(6) data-analyzing machine analyzes rear car according to the analytical judgment result of head vehicle:
1. if head vehicle can not pass through, then it represents that inscribed in current countdown, apart from stop line any position behind head vehicle Ramp to stop can not should be selected with the motor vehicle that arbitrary speed travels by stop line;
2. when if head vehicle allows by but not yet passes stop line, the traveling of the 2nd vehicle can be restricted by front truck thereafter, It collides with front truck to avoid rear vehicle speed excessive, rear car should select to sail and automatically adjusted with vehicle speed to keep pacifying with speeding on Full spacing;
(7) induction warning is carried out in inducing caution system according to analysis result
When VMS plates show information, the first row shows that the driving information of current state following vehicle, the second row show current state The driving information of lower rear car;
1. when judge lift one's head vehicle can not by when, VMS plate the first rows are shown:" ramp to stop ", the second row are shown:" slow down Parking ";
2. when the vehicle that judges to lift one's head allows by but when not yet passing stop line, VMS plate the first rows are shown:" license plate number is Xxx, permission are passed through with present speed ", the second row shows " following, keep with vehicle range line ", if rear car is adjacent two with during vehicle When following distance is less than range line, the analysis result of data-analyzing machine reaches vehicle-mounted alarm through GPRS wireless networks, carries out voice police Show " paying attention to vehicle spacing ", driver is prompted to notice that spacing automatically adjusts speed;
(8) when head vehicle has passed through stop line, when the signal recognition device in data-analyzing machine can again identify that out current The head vehicle and rear car inscribed divide according to above-mentioned identical algorithmic procedure and discriminatory analysis method working as front vehicle and rear car Analysis, and correct vehicle and rear car carry out induction warning in the same manner, according to said method, can analyze and determine the green light countdown phase Between all vehicles.
Present invention utilizes VMS plates and vehicle-mounted alarm to draw to the motor vehicle of different location under countdown any time Warning is led, the early warning induction system formed by using VMS plates and vehicle-mounted alarm is to the machine under green light countdown any time Motor-car driver, which provides, drives selection information, to ensure driving safety.
The present invention can obtain different positions under countdown any time in real time by vehicle GPS, GPRS wireless-transmission networks It sets the coordinate of vehicle, travel speed, license plate number and uploads in the central controller of VMS plates, central controller utilizes default public affairs Formula data are calculated the displacement of different location vehicle distances stop line, adjacent two motor vehicles spacing, then will treated Data upload in the data-analyzing machine of VMS plates, data information at any time, vehicle operation variation carry out real-time synchronization dynamic more It replaces.Signal recognition device in data-analyzing machine identifies lift one's head vehicle and rear car successively by away from the sequence of stop line from the near to the distant, first First enemy's vehicle is analyzed and determined, is analyzed and determined to the driving of rear car further according to the driving information of head vehicle, finally with induction Caution system carries out induction warning to vehicle, after head vehicle is by stop line, according still further to above-mentioned identical algorithmic procedure and judgement Analysis method is analyzed and determined and is induced warning to working as front vehicle and rear car, until during having analyzed and determined green light countdown All vehicles.
The present invention has the advantages that compared with prior art:
Present invention can ensure that under countdown any time, VMS plates can show corresponding head vehicle and the driving letter of rear car Breath, and during with speeding with vehicle-mounted alarm remind rear car pay attention to spacing, under any time apart from stop line difference position The motor vehicle at the place of setting is guided and is warned, and driver drives according to the driving information of display, is reduced it and is driven selection still Henan property reduces traffic conflict, reduces rear-end collision, ensure that drive safety.
Description of the drawings
Fig. 1 is plan view of the present invention;
Fig. 2 is VMS plates display interface figure of the present invention;
Fig. 3 is position view of the early warning induction system of the present invention at road parking line.
Specific implementation mode
A kind of lower early warning induction system of urban road intersection countdown effect, includes the following steps:
(1) hollow column is established at the right side roadside flushed with stop line, VMS plates are placed in column top, vehicle-mounted GPS, vehicle-mounted alarm are placed in vehicle interior, contain central controller, data-analyzing machine in VMS plates, intersection periphery is covered with GPRS wireless-transmission networks, the current green light countdown moment t of central controller real-time reception preset intersect in the central controller Coordinate (x at mouth stop lineo,yo) range line value between vehicle.The central controller is really a kind of integrated system of data processing System, the main function of playing real-time processing data, can be by data input cell, RTDB real-time data bases processing system (such as:It is existing The PHD real-time dataBase systems of HoneyWell companies), data outputting unit composition, the major function of RTDB real-time data bases is The real-time processing that data are carried out according to embedded algorithm routine calculates.The data-analyzing machine is a kind of data based on algorithm routine Integrated system is analyzed, mainly judges that vehicle is traveling or parking according to the result of following algorithm routines.
(2) it is inscribed when countdown is a certain, using the vehicle GPS installed in each car, to obtain the current position of vehicle Coordinate (xi,yo), travel speed vi, license plate number piEtc. data, data through GPRS wireless network transmissions to VMS plates center control In device.
(3) central controller counts the data of acquisition apart from the sequence of stop line from the near to the distant according to each motor vehicle respectively Calculate displacement of any one motor vehicle apart from stop line, spacing between arbitrary two adjacent motor vehicle (as shown in figure 3, by Near the stop line entrance driveway of shortcut road, separated using solid line between track of turning left, Through Lane, track of turning right, central controller It is responsible for the data of each motor vehicle within the scope of the above-mentioned solid line of acquisition, and calculates separately corresponding displacement, spacing), calculation formula is such as Under:
si(1+1)=s1+1-si
Note:I=1,2 ..., indicate the 1st vehicle, the 2nd vehicle ....
(4) data after central controller is handled by the speed of each car, the displacement away from stop line, license plate number, adjacent two The spacing of vehicle, countdown moment, range line value upload in the data-analyzing machine in VMS plates.The data information obtained above i.e. in Entreat the data in controller, data-analyzing machine that can carry out real-time synchronization replacement with the variation of time.
(5) judge the driving behavior of head vehicle:
Signal recognition device in data-analyzing machine identifies each successively according to apart from the sequence of stop line from the near to the distant Motor vehicle, first identification lift one's head vehicle and correct vehicle is judged that (signal recognition device is a kind of for judging that real-time status is got off Whether be a vehicle algorithm routine, algorithm principle is as follows:If the distance of certain spacing stop line is l, compare l and other vehicles The magnitude relationship away from 'STOP' line ahead value, if l is minimum and l to be more than 0, l be head vehicle, by this algorithm progress real-time judge, according to The secondary head vehicle analyzed under any time state), selection is analyzed by stop line or is stopped before stop line, it is assumed that head The data of vehicle are s1,v1, t is the current countdown moment;
As follows, calculating the distance of P Passable on the basis of present speed, distance, time is:
S=v1t
If 1. s >=s1, then it represents that head vehicle can reach stop line on the basis of present speed;
If 2. s < s1, then it represents that head vehicle cannot reach stop line on the basis of present speed, then count as follows It calculates under current distance, speed, time, selection accelerates that the suggestion speed v of stop line can be reachedIt builds
vIt builds=v1+at
If I, vIt builds≤vLimit, then it represents that suggest that speed can reach stop line, v with thisLimitAs defined in road where indicating vehicle Speed limit;
If II, vIt builds> vLimit, then it represents that motor vehicle can not reach stop line on the basis of no more than speed limit, and should select to subtract Speed stops before stop line;
(6) data-analyzing machine analyzes rear car according to the analytical judgment result of head vehicle:
1. if head vehicle can not pass through, then it represents that inscribed in current countdown, apart from stop line any position behind head vehicle Ramp to stop can not should be selected with the motor vehicle that arbitrary speed travels by stop line;
2. when if head vehicle allows by but not yet passes stop line, the traveling of the 2nd vehicle can be restricted by front truck thereafter, It does not avoid rear vehicle speed excessive and collides with front truck, rear car should select to sail and automatically adjusted with vehicle speed to keep pacifying with speeding on Full spacing;
(7) induction warning is carried out in inducing caution system according to analysis result
When VMS plates show information, the first row shows that the driving information of current state following vehicle, the second row show current state The driving information of lower rear car;
1. when judge lift one's head vehicle can not by when, VMS plate the first rows are shown:" ramp to stop ", the second row are shown:" slow down Parking "
2. when the vehicle that judges to lift one's head allows by but when not yet passing stop line, VMS plate the first rows are shown:" license plate number is Xxx, permission are passed through with present speed " or " license plate number xxx, permission are passed through with present speed ", the second row, which is shown, " to be followed, protects Hold with vehicle range line ", if rear car with during vehicle adjacent two following distance be less than range line when, the analysis result of data-analyzing machine is through GPRS Wireless network reaches vehicle-mounted alarm, carries out phonetic warning " paying attention to vehicle spacing ", driver is prompted to notice that spacing automatically adjusts Speed;
(8) when head vehicle has passed through stop line, when the signal recognition device in data-analyzing machine can again identify that out current The head vehicle and rear car inscribed divide according to above-mentioned identical algorithmic procedure and discriminatory analysis method working as front vehicle and rear car Analysis, and correct vehicle and rear car carry out induction warning in the same manner, according to said method, can analyze and determine the green light countdown phase Between all vehicles.
The present invention establishes hollow column at the right side roadside flushed with stop line, and VMS plates are placed in column top, vehicle-mounted GPS, vehicle-mounted alarm are placed in vehicle interior, contain central controller, data-analyzing machine in VMS plates, intersection periphery is covered with GPRS wireless-transmission networks, the current green light countdown moment t of central controller real-time reception preset intersect in the central controller The range line value between coordinate and vehicle at mouth stop line passes through the center control of vehicle GPS, GPRS wireless-transmission networks, VMS plates Device processed can obtain and handle data in real time, and different location vehicle distances under countdown any time are stopped through central controller The displacement of line, the spacing of adjacent two motor vehicles, travel speed, license plate number upload in the data-analyzing machine in VMS plates, data point Data information in parser, central controller is at any time, the variation of vehicle operation carries out dynamic in real time and substitute.Data-analyzing machine pair Correct vehicle and rear car are analyzed and determined after data identification, are carried out to vehicle using induction caution system according to analytical judgment result Induction warning drives analysis presentation of information on VMS plates, and when spacing is less than range line, vehicle-mounted alarm sends out phonetic warning.When After head vehicle is by stop line, data-analyzing machine again identifies that out current head vehicle and rear car, and sentences according to above-mentioned identical analysis Disconnected method and induction alarming method for power are induced.The present invention drives selection hesitation for reducing, and reduces traffic conflict, and reduction is knocked into the back Accident ensures that driving safety has great importance.

Claims (1)

1. a kind of lower early warning induction system of urban road intersection countdown effect, characterized in that include the following steps:
(1) column to be established at the right side roadside flushed with intersection parking line, VMS plates are placed in column top, vehicle GPS, Vehicle-mounted alarm is placed in vehicle interior, containing central controller, data-analyzing machine in VMS plates, intersection periphery be covered with GPRS without Transmission network network, the current green light countdown moment t of central controller real-time reception preset intersection parking in the central controller Coordinate (x at lineo, yo) range line value between vehicle;
(2) it is inscribed when green light countdown is a certain, utilizes the vehicle GPS installed in each car, to obtain vehicle data, the data Including the current position coordinates (x of vehiclei, yo), travel speed vi, license plate number pi, data are through GPRS wireless network transmissions to VMS In the central controller of plate;
(3) central controller calculates separately out the data of acquisition apart from the sequence of stop line from the near to the distant according to each motor vehicle Displacement of any one motor vehicle apart from stop line, the spacing between arbitrary two adjacent motor vehicle, calculation formula difference are as follows:
si(i+1)=si+1-si
In formula:I=1,2 ..., n, indicate the 1st vehicle, the 2nd vehicle ... n-th vehicle;
(4) data after central controller is handled by the speed of each car, the displacement away from stop line, license plate number, adjacent two vehicle Spacing, countdown moment, range line value upload in the data-analyzing machine in VMS plates, and the data information of the above acquisition is center control Data in device processed, data-analyzing machine can carry out real-time synchronization replacement with the variation of time;
(5) judge the driving behavior of head vehicle:
Signal recognition device in data-analyzing machine according to apart from the sequence of stop line from the near to the distant identify successively each it is motor-driven Vehicle, first identification lift one's head vehicle and correct vehicle is judged, analyze selection by stop line or stop before stop line, false The data for determining head vehicle are s1, v1, t is the current countdown moment;
As follows, calculating the distance of P Passable on the basis of present speed, distance, time is:
S=v1t
If 1. s >=s1, then it represents that head vehicle can reach stop line on the basis of present speed;
If 2. s < s1, then it represents that head vehicle cannot reach stop line on the basis of present speed, then calculate as follows Current distance, speed under the time, select the suggestion speed v for accelerating that stop line can be reachedIt builds
vIt builds=v1+at
If I. vIt builds≤vLimit, then it represents that suggest that speed can reach stop line with this;
If II. vIt builds> vLimit, then it represents that motor vehicle can not reach stop line on the basis of no more than speed limit, and should select to slow down Stop before stop line;
(6) data-analyzing machine analyzes rear car according to the analytical judgment result of head vehicle:
1. if head vehicle can not pass through, then it represents that inscribed in current countdown, apart from stop line any position to appoint behind head vehicle The motor vehicle of meaning speed traveling can not should select ramp to stop by stop line;
2. when if head vehicle allows by but not yet passes stop line, the traveling of the 2nd vehicle can be restricted by front truck thereafter, to keep away It is excessive and collide with front truck to exempt from rear vehicle speed, rear car should select to sail and automatically adjusted with vehicle speed to keep accident-free vehicle with speeding on Away from;
(7) induction warning is carried out in inducing caution system according to analysis result
When VMS plates show information, after the first row shows that the driving information of current state following vehicle, the second row are shown under current state The driving information of vehicle;
1. when judge lift one's head vehicle can not by when, VMS plate the first rows are shown:" ramp to stop ", the second row are shown:" deceleration stops Vehicle ";
2. when the vehicle that judges to lift one's head allows by but when not yet passing stop line, VMS plate the first rows are shown:" license plate number xxx permits Perhaps passed through with present speed ", the second row shows " follow, keep with vehicle range line ", if rear car with during vehicle adjacent two following distance When less than range line, the analysis result of data-analyzing machine reaches vehicle-mounted alarm through GPRS wireless networks, carries out phonetic warning and " pays attention to With vehicle spacing ", prompt driver to notice that spacing automatically adjusts speed;
(8) when head vehicle has passed through stop line, the signal recognition device in data-analyzing machine can again identify that out under current time Head vehicle and rear car, analyzed according to above-mentioned identical algorithmic procedure and discriminatory analysis method working as front vehicle and rear car, and And correct vehicle and rear car carry out induction warning in the same manner, according to said method, during can analyzing and determining green light countdown All vehicles.
CN201810519627.6A 2018-05-28 2018-05-28 A kind of lower early warning induction system of urban road intersection countdown effect Pending CN108734953A (en)

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CN109872547A (en) * 2019-04-01 2019-06-11 武汉理工大学 A kind of parking control system for vehicle closing on intersection and method

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Application publication date: 20181102