CN105405321A - Safety early warning method during running of vehicles on freeway and system - Google Patents

Safety early warning method during running of vehicles on freeway and system Download PDF

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Publication number
CN105405321A
CN105405321A CN201510970217.XA CN201510970217A CN105405321A CN 105405321 A CN105405321 A CN 105405321A CN 201510970217 A CN201510970217 A CN 201510970217A CN 105405321 A CN105405321 A CN 105405321A
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vehicle
car
information
rear car
vehicles
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CN201510970217.XA
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CN105405321B (en
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李瑞敏
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Tsinghua University
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Tsinghua University
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    • 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

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Traffic Control Systems (AREA)
  • Image Processing (AREA)

Abstract

The invention provides a safety early warning method during running of vehicles on the freeway and a system. The method comprises steps of detecting the running speed of a basic vehicle and the running speed of the back vehicle via a radar speed detection device installed over a lane, wherein the basic vehicle and the back vehicle are on the same lane; detecting vehicle distance between the basic vehicle and the back vehicle via a high-definition video installed over the lane, obtaining image information and determining license plate information according to the high-definition camera; determining the safe vehicle distance threshold between the basic vehicle and the back vehicle; judging whether the vehicle distance is smaller than the safe vehicle distance threshold or not; and if the vehicle distance is smaller than the safe vehicle distance threshold, displaying first early warning information and the license plate information by use of a variable information plate installed over the lane. According to the invention, it can be achieved that following distance of vehicles can be detected, whether one vehicle is very close to another vehicle can be judged, and distance too-close early warnings can be given to follower drivers; traffic accident rate is reduced; and traffic safety level is increased.

Description

Safe early warning method during vehicle on expressway travels and system
Technical field
The present invention relates to technical field of intelligent traffic, particularly relate to the safe early warning method in a kind of vehicle on expressway traveling and system.
Background technology
Along with the continuous growth of highway mileage open to traffic, the traffic safety situation of highway is also severeer, and in recent years, the traffic hazard that highway occurs has accounted for the larger proportion of whole road traffic accident, and presents the trend of rising.Meanwhile, because the car speed of highway is higher, therefore, injury order of severity when there is traffic hazard is also often larger.By the analysis to the traffic accidents origin cause of formation, that following distance excessively closely to cause when front truck brakes rear car cannot under safe stopping and the traffic hazard of knocking into the back mostly, but, due to the restriction of ladder of management, Information Service Method etc., making to be correlated with not yet has good technical management means to deal with the excessively near danger situation of following distance.Simultaneously, the freeway facility day by day developed proposes new demand to freeway traffic regulation, need changing for main towards active management in advance for main with contingency management afterwards in the past, strengthen the forewarning management in freeway management process, to reduce the potential risk of traffic accidents.What relevant research emphasis was paid close attention to is on vehicle, how to install the equipment of detection following distance to carry out early warning by mobile unit, but such technology is due to the problem such as degree of ripeness, cost, be difficult in a short time promote, and cannot be used in the traffic administration work of highway.
Therefore, following distance is excessively closely a kind of typical traffic accidents hidden danger, and needs can be detected and carry out early warning to corresponding driver, and this also becomes a major issue in freeway management process.
Summary of the invention
Object of the present invention is intended to solve one of technical matters in above-mentioned technology at least to a certain extent.
For this reason, first object of the present invention is to propose the safe early warning method in a kind of vehicle on expressway traveling, the method can detect the following distance of vehicle in real time and judge whether closely, simultaneously to carry out hypotelorism early warning to the driver with car, to reduce traffic hazard incidence, improve traffic safety level.
Second object of the present invention is to propose the safety pre-warning system in a kind of vehicle on expressway traveling.
For reaching above-mentioned purpose, first aspect present invention embodiment proposes the safe early warning method in a kind of vehicle on expressway traveling, comprise the following steps: detect the road speed of this car and the road speed of rear car by the radar velocity measurement device be arranged on above track, wherein, described car and described rear car are in same track; The spaces of vehicles between described car and described rear car is detected by the HD video video camera be arranged on above track, and the image information of described rear car is obtained by described HD video video camera, the license board information of described rear car is determined according to the image information of described rear car; Determine the safety vehicle spacing threshold between described car and described rear car; Judge whether described spaces of vehicles is less than described safety vehicle spacing threshold; If described spaces of vehicles is less than described safety vehicle spacing threshold, then the variable message board be arranged on road is utilized to show the license board information of the first early warning information and described rear car.
Safe early warning method in the vehicle on expressway traveling of the embodiment of the present invention, obtain the image information of rear car by HD video video camera and determine this car of license board information and detection and the spaces of vehicles of rear car, and judge whether spaces of vehicles is less than safety vehicle spacing threshold values, utilize the variable message board be arranged on road to show the license board information of the first early warning information and rear car when spaces of vehicles is less than safety vehicle spacing threshold, the method can detect the following distance of vehicle in real time and judge whether near, hypotelorism early warning is carried out to the driver with car simultaneously, reduce traffic hazard incidence, improve traffic safety level.
In one embodiment of the invention, the described safety vehicle spacing threshold determined between described car and described rear car, comprising: the image information being obtained described car by described HD video video camera; Determine license board information and the vehicle information of described car according to the image information of described car, and determine the vehicle information of described rear car according to the graphical information of described rear car; Obtain current traffic information, and calculate the safety vehicle spacing threshold between described car and described rear car according to the vehicle information of the vehicle information of described car, described rear car, described current traffic information, the road speed of described car, the road speed of described rear car.
In one embodiment of the invention, safe early warning method during described vehicle on expressway travels, also comprising: when judging that described spaces of vehicles is less than described safety vehicle spacing threshold, the road speed of described rear car, image information, license board information and described vehicle information being saved to spacing and crossing nearly database.
In one embodiment of the invention, the road speed of described rear car, image information, license board information and described vehicle information is saved to after spacing crosses nearly database described, also comprises: obtain rolling stock number detected in Preset Time; Cross nearly database from described spacing and obtain the excessively near vehicle number of the spacing that counts in described Preset Time; According to described rolling stock number and the excessively near vehicle ratio of the excessively near vehicle number determination following distance of described spacing; Judge whether the excessively near vehicle ratio of described following distance exceedes predetermined threshold value; If the excessively near vehicle ratio of described following distance exceedes described predetermined threshold value, then utilize the variable message board be arranged on road to show the second early warning information, note vehicular gap to remind all drivers.
In one embodiment of the invention, describedly detect spaces of vehicles between described car and described rear car by the HD video video camera be arranged on above track, comprising: detect the spaces of vehicles between described car and described rear car by built-in virtual coil in described HD video video camera.
For reaching above-mentioned purpose, second aspect present invention embodiment proposes the safety pre-warning system in a kind of vehicle on expressway traveling, comprise: detection module, the road speed of this car and the road speed of rear car is detected by the radar velocity measurement device be arranged on above track, wherein, described car and described rear car are in same track; First acquisition module, the spaces of vehicles between described car and described rear car is detected by the HD video video camera be arranged on above track, and the image information of described rear car is obtained by described HD video video camera, the license board information of described rear car is determined according to the image information of described rear car; First determination module, determines the safety vehicle spacing threshold between described car and described rear car; First judge module, judges whether described spaces of vehicles is less than described safety vehicle spacing threshold; First alarm module, if described spaces of vehicles is less than described safety vehicle spacing threshold, then utilizes the variable message board be arranged on road to show the license board information of the first early warning information and described rear car.
Safety pre-warning system in the vehicle on expressway traveling of the embodiment of the present invention, obtain the image information of rear car by HD video video camera and determine this car of license board information and detection and the spaces of vehicles of rear car, and judge whether spaces of vehicles is less than safety vehicle spacing threshold values, utilize the variable message board be arranged on road to show the license board information of the first early warning information and rear car when spaces of vehicles is less than safety vehicle spacing threshold, the method can detect the following distance of vehicle in real time and judge whether near, hypotelorism early warning is carried out to the driver with car simultaneously, reduce traffic hazard incidence, improve traffic safety level.
In one embodiment of the invention, described determination module, comprising: acquiring unit, for being obtained the image information of described car by described HD video video camera; Determining unit, for determining license board information and the vehicle information of described car according to the image information of described car, and determines the vehicle information of described rear car according to the graphical information of described rear car; Computing unit, obtain current traffic information, and calculate the safety vehicle spacing threshold between described car and described rear car according to the vehicle information of the vehicle information of described car, described rear car, described current traffic information, the road speed of described car, the road speed of described rear car.
In one embodiment of the invention, safety pre-warning system during described vehicle on expressway travels, also comprise: preserve module, when judging that described spaces of vehicles is less than described safety vehicle spacing threshold, the road speed of described rear car, image information, license board information and described vehicle information being saved to spacing and crossing nearly database.
In one embodiment of the invention, the road speed of described rear car, image information, license board information and described vehicle information is saved to after spacing crosses nearly database described, also comprise: the second acquisition module, obtain rolling stock number detected in Preset Time; 3rd acquisition module, crosses nearly database from described spacing and obtains the excessively near vehicle number of the spacing that counts in described Preset Time; Second determination module, according to described rolling stock number and the excessively near vehicle ratio of the excessively near vehicle number determination following distance of described spacing; Second judge module, judges whether the excessively near vehicle ratio of described following distance exceedes predetermined threshold value; Second alarm module, if the excessively near vehicle ratio of described following distance exceedes described predetermined threshold value, then utilizes the variable message board be arranged on road to show the second early warning information, notes vehicular gap to remind all drivers.
In one embodiment of the invention, described detection module specifically for: detect the spaces of vehicles between described car and described rear car by built-in virtual coil in described HD video video camera.
The aspect that the present invention adds and advantage will part provide in the following description, and part will become obvious from the following description, or be recognized by practice of the present invention.
Accompanying drawing explanation
The present invention above-mentioned and/or additional aspect and advantage will become obvious and easy understand from the following description of the accompanying drawings of embodiments, wherein:
Fig. 1 be according to an embodiment of the invention vehicle on expressway travel in the process flow diagram of safe early warning method;
Fig. 2 is the process flow diagram of the safety vehicle spacing threshold determined according to an embodiment of the invention between front truck and rear car;
Fig. 3 be in accordance with another embodiment of the present invention vehicle on expressway travel in the process flow diagram of safe early warning method;
Fig. 4 is the process flow diagram of the safe early warning method in travelling according to the vehicle on expressway of the present invention's specific embodiment;
Fig. 5 be according to an embodiment of the invention vehicle on expressway travel in the structural representation of safety pre-warning system;
Fig. 6 be in accordance with another embodiment of the present invention vehicle on expressway travel in the structural representation of safety pre-warning system;
Fig. 7 is the structural representation of the safety pre-warning system in travelling according to the vehicle on expressway of the present invention's specific embodiment;
Fig. 8 is the structural representation of the safety pre-warning system in travelling according to the vehicle on expressway of another specific embodiment of the present invention.
Embodiment
Be described below in detail embodiments of the invention, the example of described embodiment is shown in the drawings, and wherein same or similar label represents same or similar element or has element that is identical or similar functions from start to finish.Be exemplary below by the embodiment be described with reference to the drawings, be intended to for explaining the present invention, and can not limitation of the present invention be interpreted as.
In addition, term " first ", " second " only for describing object, and can not be interpreted as instruction or hint relative importance or imply the quantity indicating indicated technical characteristic.Thus, be limited with " first ", the feature of " second " can express or impliedly comprise one or more these features.In describing the invention, the implication of " multiple " is two or more, unless otherwise expressly limited specifically.
Describe and can be understood in process flow diagram or in this any process otherwise described or method, represent and comprise one or more for realizing the module of the code of the executable instruction of the step of specific logical function or process, fragment or part, and the scope of the preferred embodiment of the present invention comprises other realization, wherein can not according to order that is shown or that discuss, comprise according to involved function by the mode while of basic or by contrary order, carry out n-back test, this should understand by embodiments of the invention person of ordinary skill in the field.
Below with reference to the accompanying drawings safe early warning method in the vehicle on expressway traveling of the embodiment of the present invention and the safety pre-warning system in vehicle on expressway traveling are described.
Fig. 1 be according to an embodiment of the invention vehicle on expressway travel in the process flow diagram of safe early warning method.
As shown in Figure 1, the method comprises:
S11, the radar velocity measurement device be arranged on above track detects the road speed of this car and the road speed of rear car, and wherein, Ben Che and rear car are in same track.
S12, detects this car spaces of vehicles with the rear car by the HD video video camera be arranged on above track, and obtains the image information of rear car by HD video video camera, according to the license board information of the image information determination rear car of rear car.
S13, determines the safety vehicle spacing threshold between this car and rear car.
Specifically, determine the detailed process of the safety vehicle spacing threshold between this car and rear car, as shown in Figure 2, can comprise:
S131, obtains the image information of this car by HD video video camera.
S132, determines license board information and the vehicle information of this car according to the image information of this car, and the vehicle information of graphical information determination rear car according to rear car.
S133, obtains current traffic information, and calculates this car safety vehicle spacing threshold with the rear car according to the vehicle information of this car, the vehicle information of rear car, current traffic information, the road speed of this car, the road speed of rear car.
S14, judges whether spaces of vehicles is less than safety vehicle spacing threshold.
S15, if spaces of vehicles is less than safety vehicle spacing threshold, then utilizes the variable message board be arranged on road to show the license board information of the first early warning information and rear car.
Wherein, variable message board, variable message board can show the contents such as word, figure, numeral.
Such as, determine that the safety vehicle spacing threshold between the two cars of front and back is 50 meters, when the distance monitoring rear car distance front truck is less than 50 meters, the variable message board be arranged on road can show the license board information of rear car, and show the early warning information of " in order to traffic safety, please noting traffic safety ".Safe early warning method in the vehicle on expressway traveling of the embodiment of the present invention, the image information determination license board information of rear car and this car of detection and the spaces of vehicles of rear car is obtained by HD video video camera, and judge whether spaces of vehicles is less than safety vehicle spacing threshold values, utilize the variable message board be arranged on road to show the license board information of the first early warning information and rear car when spaces of vehicles is less than safety vehicle spacing threshold, the method can detect the following distance of vehicle in real time and judge whether near, hypotelorism early warning is carried out to the driver with car simultaneously, reduce traffic hazard incidence, strengthen traffic safety.
Safe early warning method in the vehicle on expressway traveling of the embodiment of the present invention, obtain the image information of rear car by HD video video camera and determine this car of license board information and detection and the spaces of vehicles of rear car, and judge whether spaces of vehicles is less than safety vehicle spacing threshold values, utilize the variable message board be arranged on road to show the license board information of the first early warning information and rear car when spaces of vehicles is less than safety vehicle spacing threshold, the method can detect the following distance of vehicle in real time and judge whether near, hypotelorism early warning is carried out to the driver with car simultaneously, reduce traffic hazard incidence, improve traffic safety level.
Fig. 3 be in accordance with another embodiment of the present invention vehicle on expressway travel in the process flow diagram of safe early warning method.
As shown in Figure 3, the method comprises:
S301, the radar velocity measurement device be arranged on above track detects the road speed of this car and the road speed of rear car, and wherein, Ben Che and rear car are in same track.
S302, detects this car spaces of vehicles with the rear car by the HD video video camera be arranged on above track, and obtains the image information of rear car by HD video video camera, according to the license board information of the image information determination rear car of rear car.
S303, determines the safety vehicle spacing threshold between this car and rear car.
In one embodiment of the invention, the image information of this car is obtained by HD video video camera, and license board information and the vehicle information of this car is determined according to the image information of this car, and the vehicle information of graphical information determination rear car according to rear car, and obtain current traffic information, and according to the vehicle information of this car, the vehicle information of rear car, current traffic information, the road speed of this car, the road speed of rear car calculate this car safety vehicle spacing threshold with the rear car.
S304, judges whether spaces of vehicles is less than safety vehicle spacing threshold.
S305, if spaces of vehicles is less than safety vehicle spacing threshold, then utilizes the variable message board be arranged on road to show the license board information of the first early warning information and rear car.
S306, when judging that spaces of vehicles is less than safety vehicle spacing threshold, being saved to spacing by the road speed of rear car, image information, license board information and vehicle information and crossing nearly database.
S307, obtains rolling stock number detected in Preset Time.
S308, crosses nearly database from spacing and obtains in Preset Time the excessively near vehicle number of the spacing that counts on.
S309, according to rolling stock number and the excessively near vehicle ratio of the excessively near vehicle number determination following distance of spacing.
S310, judges whether the excessively near vehicle ratio of following distance exceedes predetermined threshold value.
S311, if the excessively near vehicle ratio of following distance exceedes predetermined threshold value, then utilizes the variable message board be arranged on road to show the second early warning information, notes vehicular gap to remind all drivers.
For the ease of understanding embodiments of the invention, the safe early warning method in this vehicle on expressway traveling is described by way of example below.
Such as, cross for a certain the vehicle A detecting section, first radar velocity measurement device can detect the real-time road speed v of this vehicle a, simultaneously HD video video camera can detect the distance L followed after this vehicle and its same track between vehicle B aB, afterwards when to follow below vehicle B arrive detect section time, radar velocity measurement follows the speed v of vehicle B after detecting b, HD video video camera can be captured the photo of vehicle and carry out Car license recognition simultaneously.Subsequently will according to v a, v brelativeness and L aBcontrast with the following distance threshold value under particular condition, excessively near to determine whether current rear car B follows front truck; If it is excessively near that rear car B does not follow front truck A, then system does not carry out any early warning.If it is excessively near that rear car B follows front truck A, then the car plate of the rear car B of HD video camera detector identification can be sent on the variable message board in downstream, and variable message board can show the printed words such as corresponding license board information and " attention maintains safe distance " and carry out early warning to vehicle.Meanwhile, the relevant information of this car stored in database, is comprised license board information, by time information, by some bit number, highway names, crosses nearly information etc. with car by system; The number of times with the excessively near vehicle of car can automatically calculated over for each hour in one hour, and with being compared by the rolling stock number in this this track of section, if the ratio of following car to cross nearly vehicle exceedes the threshold value of setting, then variable message board excessively closely can carry out early warning when not showing car plate to car, be should be noted that with the excessively near problem of car by the vehicle driver of this section to remind, note maintaining safe distance.
Safe early warning method in the vehicle on expressway traveling of the embodiment of the present invention, whether the vehicle ratio excessively near by all following distances in statistics preset time period exceedes predetermined threshold value, the variable message board be arranged on road is utilized to show the second early warning information if the excessively near vehicle ratio of following distance exceedes predetermined threshold value, vehicular gap is noted to remind all drivers, the method can detect the following distance of vehicle in real time and judge whether near, hypotelorism early warning is carried out to the driver with car simultaneously, reduce traffic hazard incidence, improve traffic safety level.
Fig. 4 is the process flow diagram of the safe early warning method in travelling according to the vehicle on expressway of the present invention's specific embodiment.
Wherein, detections of radar vehicle also tests the speed 41, the radar be arranged on above track is utilized to carry out velocity measuring to each car by each track, obtain the velocity amplitude of each car, high-definition camera carries out recording a video and picture candid photograph 42, utilization is arranged on the traffick situation of the HD video video camera above track to each track and carries out continuous print video recording and carry out anterior picture to each car capturing, carry out car plate and vehicle cab recognition 43, utilize the picture captured, the car plate of application image identification software to the vehicle captured identifies, and carry out vehicle cab recognition simultaneously, obtain the car plate by vehicle and vehicle, carry out vehicle headway and detect 44, utilize high-definition camera, the following distance of applies image analysis software to the vehicle passed through continuously in two, the front and back on same track detects, calculate spaces of vehicles threshold value 45, according to road conditions, the vehicle etc. of front and back car carries out the calculating of the safety vehicle spacing of the adjacent vehicle in every two front and back, obtain corresponding safety vehicle spacing threshold, early warning information issues 46, the safety vehicle spacing threshold of the spaces of vehicles detected and calculating is compared, if the spaces of vehicles detected is less than safety vehicle spacing threshold, the car plate then utilizing the variable message board display following distance be arranged on road excessively near and early warning information, if the spaces of vehicles detected is greater than safety vehicle spacing threshold, then early warning is not carried out to this vehicle, information stores 47, if the spaces of vehicles detected is less than safety vehicle spacing threshold, then the velocity amplitude of rear car, candid photograph image, identification license plate number etc. is counted spacing and crosses nearly database, following distance crosses nearly statistical study 48, calculates according to detected rolling stock data and the excessively near vehicle data of following distance, section following distance crosses nearly early warning 49, if the vehicle ratio that following distance is excessively near within a period of time exceedes certain ratio, then utilizes the variable message board early warning following distance that this section occurs at no distant date be arranged on road to cross closely more situation.
More specifically illustrate, for example, for a section of a certain bar highway, various kinds of equipment involved in the present invention is installed.At 12:00 on January 1st, 2015, vehicle A by this detection section, velocity radar will detect the speed v of vehicle A a, be 100 kilometers/hour, the simultaneously continual video recording of high-definition camera and vehicle A is captured, and carry out the work such as the car plate of vehicle A and vehicle cab recognition, car plate is capital Z12345, and vehicle is car.Simultaneously video inspection software will detect the distance L followed after vehicle A and its same track between vehicle B based on HD video video camera aB, be 100 meters, and these information be stored in database.Afterwards when to follow below vehicle B arrive detect section time, the speed v of vehicle B followed by velocity radar after will detecting b, be 110 kilometers/hour, the photo that simultaneously HD video video camera can capture vehicle while video recording is gone forward side by side driving board and vehicle cab recognition, and car plate is capital X54321, and vehicle is car.Software for calculation in industrial computer is by the vehicle according to A, B vehicle, current condition of road surface, v a, v bdata carry out the calculating of safety vehicle spacing threshold between vehicle A, B, such as calculated threshold is 150 meters, the spaces of vehicles L will detected subsequently aB(100 meters) contrast with the safety vehicle spacing threshold (150 meters) under this situation, result is the safe spacing threshold value that the following distance of rear car is less than under the present situation between vehicle, in the case, the variable message board in downstream will warning: capital X4321, please notes following distance.Simultaneously by the relevant information of vehicle B stored in data, comprise car plate, vehicle, by the moment, the information such as following distance, systems stay runs, and the information of the vehicle constantly recording the rolling stock information passed through and follow car excessively near, and every 5 minutes once calculate, calculate in the vehicle passed through in 5 minutes in the past and account for the ratio all by vehicle number in 5 minutes with the vehicle that car is excessively near, if this ratio (as 30%) exceedes the ratio value (as 20%) of systemic presupposition, then on the variable message board of downstream, show warning messages such as " please note and maintain safe distance ".
Safe early warning method in the vehicle on expressway traveling of the embodiment of the present invention, obtain the image information of rear car by HD video video camera and determine this car of license board information and detection and the spaces of vehicles of rear car, and judge whether spaces of vehicles is less than safety vehicle spacing threshold values, utilize the variable message board be arranged on road to show the license board information of the first early warning information and rear car when spaces of vehicles is less than safety vehicle spacing threshold, the method can detect the following distance of vehicle in real time and judge whether near, hypotelorism early warning is carried out to the driver with car simultaneously, reduce traffic hazard incidence, improve traffic safety level.
Fig. 5 be according to an embodiment of the invention vehicle on expressway travel in the structural representation of safety pre-warning system.
This system comprises: detection module 501, first acquisition module 502, first determination module 503, first judge module 504 and the first alarm module 505.
Wherein, detection module 501 detects the road speed of this car and the road speed of rear car by the radar velocity measurement device be arranged on above track, wherein, this car and rear car are in same track, first acquisition module 502 detects this car spaces of vehicles with the rear car by the HD video video camera be arranged on above track, and the image information of rear car is obtained by HD video video camera, according to the license board information of the image information determination rear car of rear car, first determination module 503 determines the safety vehicle spacing threshold between this car and rear car, first judge module 504 judges whether spaces of vehicles is less than safety vehicle spacing threshold, if the first alarm module 505 spaces of vehicles is less than safety vehicle spacing threshold, the variable message board be arranged on road is then utilized to show the license board information of the first early warning information and rear car.
Specifically, first determination module 503 comprises: acquiring unit 5031 is for obtaining the image information of this car by HD video video camera, determining unit 5032 is for determining license board information and the vehicle information of this car according to the image information of this car, and the vehicle information of graphical information determination rear car according to rear car, computing unit 5033 obtains current traffic information, and calculates this car safety vehicle spacing threshold with the rear car according to the vehicle information of this car, the vehicle information of rear car, current traffic information, the road speed of this car, the road speed of rear car.
It should be noted that, the explanation of the aforementioned embodiment to the safe early warning method in vehicle on expressway traveling illustrates the safety pre-warning system in the vehicle on expressway traveling being also applicable to this embodiment, and it is similar that it realizes principle, repeats no more herein.
Safety pre-warning system in the vehicle on expressway traveling of the embodiment of the present invention, obtain the image information of rear car by HD video video camera and determine this car of license board information and detection and the spaces of vehicles of rear car, and judge whether spaces of vehicles is less than safety vehicle spacing threshold values, utilize the variable message board be arranged on road to show the license board information of the first early warning information and rear car when spaces of vehicles is less than safety vehicle spacing threshold, the method can detect the following distance of vehicle in real time and judge whether near, hypotelorism early warning is carried out to the driver with car simultaneously, reduce traffic hazard incidence, improve traffic safety level.
Fig. 6 be in accordance with another embodiment of the present invention vehicle on expressway travel in the structural representation of safety pre-warning system.
This system comprises: detection module 501, first acquisition module 502, first determination module 503, first judge module 504, first alarm module 505, preservation module 506, second acquisition module 507, the 3rd acquisition module 508, second determination module 509, second judge module 5010 and the second alarm module 5011.
Wherein, detection module 501 detects the road speed of this car and the road speed of rear car by the radar velocity measurement device be arranged on above track, wherein, this car and rear car are in same track, first acquisition module 502 detects this car spaces of vehicles with the rear car by the HD video video camera be arranged on above track, and the image information of rear car is obtained by HD video video camera, according to the license board information of the image information determination rear car of rear car, first determination module 503 determines the safety vehicle spacing threshold between this car and rear car, first judge module 504 judges whether spaces of vehicles is less than safety vehicle spacing threshold, if the first alarm module 505 spaces of vehicles is less than safety vehicle spacing threshold, the variable message board be arranged on road is then utilized to show the license board information of the first early warning information and rear car, preserve module 506 when judging that spaces of vehicles is less than safety vehicle spacing threshold, by the road speed of rear car, image information, license board information and vehicle information are saved to spacing and cross nearly database, second acquisition module 507 obtains rolling stock number detected in Preset Time, 3rd acquisition module 508 is crossed nearly database from spacing and is obtained in Preset Time the excessively near vehicle number of the spacing that counts on, second determination module 509 is according to rolling stock number and the excessively near vehicle ratio of the excessively near vehicle number determination following distance of spacing, second judge module 5010 judges whether the excessively near vehicle ratio of following distance exceedes predetermined threshold value, if the excessively near vehicle ratio of the second alarm module 5011 following distance exceedes predetermined threshold value, the variable message board be arranged on road is then utilized to show the second early warning information, vehicular gap is noted to remind all drivers.
It should be noted that, the explanation of the aforementioned embodiment to the safe early warning method in vehicle on expressway traveling illustrates the safety pre-warning system in the vehicle on expressway traveling being also applicable to this embodiment, and it is similar that it realizes principle, repeats no more herein.
Safety pre-warning system in the vehicle on expressway traveling of the embodiment of the present invention, obtain the image information of rear car by HD video video camera and determine this car of license board information and detection and the spaces of vehicles of rear car, and judge whether spaces of vehicles is less than safety vehicle spacing threshold values, utilize the variable message board be arranged on road to show the license board information of the first early warning information and rear car when spaces of vehicles is less than safety vehicle spacing threshold, the method can detect the following distance of vehicle in real time and judge whether near, hypotelorism early warning is carried out to the driver with car simultaneously, reduce traffic hazard incidence, improve traffic safety level.
Fig. 7 is the structural representation of the safety pre-warning system in travelling according to the vehicle on expressway of the present invention's specific embodiment.
The equipment that this system mainly comprises is: radar velocity measurement equipment, HD video video camera, identification software, central server, communication device, variable message board.
Radar velocity measurement equipment is installed above track, installing a radar velocity measurement device, for carrying out the Bus-Speed Monitoring of each lane vehicle, sending to the central server such as surveyed vehicle speed data and time data simultaneously above every bar track; HD video video camera, the all standing of HD video video camera realization to each bar track of highway of varying number is generally installed according to the number of track-lines detected, such as the highway in unidirectional three tracks, the video camera of usual installation 5,000,000 pixels covers three tracks, for the highway in unidirectional four tracks, then the video camera of two 5,000,000 pixels is installed.Video camera is recorded a video on the one hand in real time, carries out video capture and Car license recognition on the other hand to each vehicle passed through, and the distance between simultaneously also needing every adjacent two cars identifies; Identification software, receive video camera shooting by after the picture of vehicle, identification software identifies vehicle pictures, mainly comprises number-plate number identification, vehicle judgements, spaces of vehicles identification etc., afterwards by identification afterwards data transfer to Central Data Server; Central server, be mainly used to be responsible for processing the Various types of data detected and storing, comprise real-time recording data, license plate identification data, spaces of vehicles data, vehicle speed data etc., can automatically be created on according to detection data result the information that variable message board is issued simultaneously; Communication device, be mainly used in radar velocity measurement device, HD video video camera, communication between variable message board and central server, by the Various types of data information transmission that detects to central server, the information that will issue of central server generation to be sent on variable message board on the one hand on the one hand.Variable message board is arranged on video and detects section downstream, when the less situation of following distance being detected, for carrying out early warning to certain vehicle targetedly, shows this car car plate and relevant early warning information; When the less situation of following distance detected when certain period is more, then the display early warning information of popularity, carries out early warning to through vehicle.
Safety pre-warning system in the vehicle on expressway traveling of the embodiment of the present invention, obtain the image information of rear car by HD video video camera and determine this car of license board information and detection and the spaces of vehicles of rear car, and judge whether spaces of vehicles is less than safety vehicle spacing threshold values, utilize the variable message board be arranged on road to show the license board information of the first early warning information and rear car when spaces of vehicles is less than safety vehicle spacing threshold, the method can detect the following distance of vehicle in real time and judge whether near, hypotelorism early warning is carried out to the driver with car simultaneously, reduce traffic hazard incidence, improve traffic safety level.
Fig. 8 is the structural representation of the safety pre-warning system in travelling according to the vehicle on expressway of another specific embodiment of the present invention.
Native system comprises the unit 801 that tests the speed, and vehicle travels video record unit 802, and Car license recognition module 803, with following distance detection module 804, crosses nearly information storage module 805 with car, following distance statistical analysis module 806, early warning information release unit 807.
Wherein, the unit 801 that tests the speed refers to that utilizing the radar velocity measurement device be arranged on above track to carry out all speed by this track vehicle detects, the speed of a motor vehicle of vehicle simultaneously will detected, the detection moment etc. is transferred in the database of central server and stores, vehicle travels video record unit 802 and utilizes the high-definition camera be erected at above track to carry out the continuously recording of vehicle traveling behavior, and according to the communication bandwidth situation between field apparatus and central server, video recording is transferred to central server to carry out preserving or being kept in local memory device, the Car license recognition software module of Car license recognition module 803 exploitation carries out the identification of the number-plate number and the identification of car plate color, thus vehicle is judged while the identification number-plate number, and by the number-plate number after identification, body color, the information transmission such as type of vehicle are to central server, the virtual coil utilizing high-definition camera built-in with following distance detection module 804 carries out the detection with following distance between fore-aft vehicle, obtain following following distance and being transferred to central server of vehicle, nearly information storage module 805 is crossed by contrasting with following distance threshold value with car, the license board information of nearly vehicle will be crossed with following distance, pictorial information, following distance crosses nearly database stored in following distance, following distance statistical analysis module 806 crosses based on following distance ratio and the variation tendency that the data that store in nearly database and section vehicle flowrate sum analytical calculation following distance cross nearly vehicle, early warning information release unit 807 utilizes the variable message board be arranged on above track to carry out the issue of bicycle or the excessively near early warning information of section following distance.
Safety pre-warning system in the vehicle on expressway traveling of the embodiment of the present invention, obtain the image information of rear car by HD video video camera and determine this car of license board information and detection and the spaces of vehicles of rear car, and judge whether spaces of vehicles is less than safety vehicle spacing threshold values, utilize the variable message board be arranged on road to show the license board information of the first early warning information and rear car when spaces of vehicles is less than safety vehicle spacing threshold, the method can detect the following distance of vehicle in real time and judge whether near, hypotelorism early warning is carried out to the driver with car simultaneously, reduce traffic hazard incidence, improve traffic safety level.
Should be appreciated that each several part of the present invention can realize with hardware, software, firmware or their combination.In the above-described embodiment, multiple step or method can with to store in memory and the software performed by suitable instruction execution system or firmware realize.Such as, if realized with hardware, the same in another embodiment, can realize by any one in following technology well known in the art or their combination: the discrete logic with the logic gates for realizing logic function to data-signal, there is the special IC of suitable combinational logic gate circuit, programmable gate array (PGA), field programmable gate array (FPGA) etc.
In the present invention, unless otherwise clearly defined and limited, term " installation ", " being connected ", " connection ", etc. term should be interpreted broadly, such as, can be fixedly connected with, also can be removably connect, or integral; Can be mechanical connection, also can be electrical connection; Can be directly be connected, also indirectly can be connected by intermediary, can be the connection of two element internals or the interaction relationship of two elements, unless otherwise clear and definite restriction.For the ordinary skill in the art, above-mentioned term concrete meaning in the present invention can be understood as the case may be.
In the description of this instructions, specific features, structure, material or feature that the description of reference term " embodiment ", " some embodiments ", " example ", " concrete example " or " some examples " etc. means to describe in conjunction with this embodiment or example are contained at least one embodiment of the present invention or example.In this manual, to the schematic representation of above-mentioned term not must for be identical embodiment or example.And the specific features of description, structure, material or feature can combine in one or more embodiment in office or example in an appropriate manner.In addition, when not conflicting, the feature of the different embodiment described in this instructions or example and different embodiment or example can carry out combining and combining by those skilled in the art.
Although illustrate and describe embodiments of the invention above, be understandable that, above-described embodiment is exemplary, can not be interpreted as limitation of the present invention, and those of ordinary skill in the art can change above-described embodiment within the scope of the invention, revises, replace and modification.

Claims (10)

1. the safe early warning method in vehicle on expressway traveling, is characterized in that, comprise the following steps:
Detect the road speed of this car and the road speed of rear car by the radar velocity measurement device be arranged on above track, wherein, described car and described rear car are in same track;
The spaces of vehicles between described car and described rear car is detected by the HD video video camera be arranged on above track, and the image information of described rear car is obtained by described HD video video camera, the license board information of described rear car is determined according to the image information of described rear car;
Determine the safety vehicle spacing threshold between described car and described rear car;
Judge whether described spaces of vehicles is less than described safety vehicle spacing threshold;
If described spaces of vehicles is less than described safety vehicle spacing threshold, then the variable message board be arranged on road is utilized to show the license board information of the first early warning information and described rear car.
2. the safe early warning method in vehicle on expressway traveling as claimed in claim 1, it is characterized in that, the described safety vehicle spacing threshold determined between described car and described rear car, comprising:
The image information of described car is obtained by described HD video video camera;
Determine license board information and the vehicle information of described car according to the image information of described car, and determine the vehicle information of described rear car according to the graphical information of described rear car;
Obtain current traffic information, and calculate the safety vehicle spacing threshold between described car and described rear car according to the vehicle information of the vehicle information of described car, described rear car, described current traffic information, the road speed of described car, the road speed of described rear car.
3. the safe early warning method in vehicle on expressway traveling as claimed in claim 2, is characterized in that, also comprise:
When judging that described spaces of vehicles is less than described safety vehicle spacing threshold, the road speed of described rear car, image information, license board information and described vehicle information being saved to spacing and crossing nearly database.
4. vehicle on expressway as claimed in claim 3 travel in safe early warning method, it is characterized in that, the road speed of described rear car, image information, license board information and described vehicle information is saved to after spacing crosses nearly database described, also comprises:
Obtain rolling stock number detected in Preset Time;
Cross nearly database from described spacing and obtain the excessively near vehicle number of the spacing that counts in described Preset Time;
According to described rolling stock number and the excessively near vehicle ratio of the excessively near vehicle number determination following distance of described spacing;
Judge whether the excessively near vehicle ratio of described following distance exceedes predetermined threshold value;
If the excessively near vehicle ratio of described following distance exceedes described predetermined threshold value, then utilize the variable message board be arranged on road to show the second early warning information, note vehicular gap to remind all drivers.
5. the safe early warning method during vehicle on expressway as described in claim 1-4 travels, is characterized in that, describedly detects spaces of vehicles between described car and described rear car by the HD video video camera be arranged on above track, comprising:
The spaces of vehicles between described car and described rear car is detected by built-in virtual coil in described HD video video camera.
6. the safety pre-warning system in vehicle on expressway traveling, is characterized in that, comprising:
Detection module, detects the road speed of this car and the road speed of rear car by the radar velocity measurement device be arranged on above track, and wherein, described car and described rear car are in same track;
First acquisition module, the spaces of vehicles between described car and described rear car is detected by the HD video video camera be arranged on above track, and the image information of described rear car is obtained by described HD video video camera, the license board information of described rear car is determined according to the image information of described rear car;
First determination module, determines the safety vehicle spacing threshold between described car and described rear car;
First judge module, judges whether described spaces of vehicles is less than described safety vehicle spacing threshold;
First alarm module, if described spaces of vehicles is less than described safety vehicle spacing threshold, then utilizes the variable message board be arranged on road to show the license board information of the first early warning information and described rear car.
7. the safety pre-warning system in vehicle on expressway traveling as claimed in claim 6, it is characterized in that, described first determination module, comprising:
Acquiring unit, for obtaining the image information of described car by described HD video video camera;
Determining unit, for determining license board information and the vehicle information of described car according to the image information of described car, and determines the vehicle information of described rear car according to the graphical information of described rear car;
Computing unit, obtain current traffic information, and calculate the safety vehicle spacing threshold between described car and described rear car according to the vehicle information of the vehicle information of described car, described rear car, described current traffic information, the road speed of described car, the road speed of described rear car.
8. the safety pre-warning system in vehicle on expressway traveling as claimed in claim 7, is characterized in that, also comprise:
Preserve module, when judging that described spaces of vehicles is less than described safety vehicle spacing threshold, the road speed of described rear car, image information, license board information and described vehicle information being saved to spacing and crossing nearly database.
9. vehicle on expressway as claimed in claim 8 travel in safety pre-warning system, it is characterized in that, the road speed of described rear car, image information, license board information and described vehicle information is saved to after spacing crosses nearly database described, also comprises:
Second acquisition module, obtains rolling stock number detected in Preset Time;
3rd acquisition module, crosses nearly database from described spacing and obtains the excessively near vehicle number of the spacing that counts in described Preset Time;
Second determination module, according to described rolling stock number and the excessively near vehicle ratio of the excessively near vehicle number determination following distance of described spacing;
Second judge module, judges whether the excessively near vehicle ratio of described following distance exceedes predetermined threshold value;
Second alarm module, if the excessively near vehicle ratio of described following distance exceedes described predetermined threshold value, then utilizes the variable message board be arranged on road to show the second early warning information, notes vehicular gap to remind all drivers.
10. the safety pre-warning system during the vehicle on expressway as described in claim 6-9 travels, is characterized in that, described detection module, specifically for:
The spaces of vehicles between described car and described rear car is detected by built-in virtual coil in described HD video video camera.
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