CN104658279B - Real-time optimization signal control method and system based on video traffic state monitoring - Google Patents
Real-time optimization signal control method and system based on video traffic state monitoring Download PDFInfo
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- CN104658279B CN104658279B CN201510085654.3A CN201510085654A CN104658279B CN 104658279 B CN104658279 B CN 104658279B CN 201510085654 A CN201510085654 A CN 201510085654A CN 104658279 B CN104658279 B CN 104658279B
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- G—PHYSICS
- G08—SIGNALLING
- G08G—TRAFFIC CONTROL SYSTEMS
- G08G1/00—Traffic control systems for road vehicles
- G08G1/07—Controlling traffic signals
- G08G1/08—Controlling traffic signals according to detected number or speed of vehicles
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Abstract
The invention provides a real-time optimization signal control method and system based on video traffic state monitoring. According to the method and the system, the problems of high detecting coil damage rate, inflexible setting and poor data reliability of traditional intersection actuated signal control can be solved. The method comprises steps as follows: a camera is erected above an entrance driveway of an intersection and used for collecting real-time video images of an entrance section of each guide driveway of the entrance driveway; a video detecting and processing unit is used for setting virtual detecting coils on the real-time video images and detecting the traffic state in the entrance driveway through the virtual detecting coils; a logical analysis unit is used for logically analyzing the traffic state in the entrance driveway, and a control adjustment signal is generated according to a logical analysis result and is transmitted to a traffic signal instrument; the traffic signal instrument is used for controlling or adjusting a timing plan of the entrance driveway according to the control adjustment signal.
Description
Technical field
The present invention relates to road traffic signal control technology field, believes more particularly, to the road traffic based on Video Detection
Number control technology field, the real-time optimization signal control method and system specially based on the current status monitoring of video.
Background technology
In recent years, to crack the traffic jam issue that increasingly sharpens that city faces, intelligent transportation system has all been carried out in various places
Construction and application, the effect of traffic signal control system also gradually draws attention, and plays on intersection congestion is alleviated
Effect.But, due to many reasons, the intersection in China's major part city is using single-point, fixed cycle, fixed timing
Control model, with the fast development of urban society's economy, vehicle guaranteeding organic quantity increases sharply, and this control model is
The needs of reality cannot increasingly be adapted to.Therefore, either newly built city district, or reconstruction of the old city town, traffic signalization are all arranged
For an important ring therein, the real-time actuated signal control system of function is particularly adjusted with signal, more becomes solving road
The effective means of crossing congestion.
At present, traditional intersection actuated signal control is mostly the traffic parameter gathered based on detection coil, foundation
Traffic parameter situation of change carrys out real-time adjustment crossing vehicle clearance phases-time.But the traffic information collection based on coil section
Mode can not meet the demand of traffic administration and control, and which is present, and detection coil spoilage is high, arrange dumb, data reliability
Property difference the problems such as.
The content of the invention
For the problems referred to above, the invention provides real-time optimization signal control method based on the current status monitoring of video and
System, the detection coil spoilage which can solve the presence of conventional cross mouth actuated signal control is high, arrange dumb, data reliability
Property difference problem.
Real-time optimization signal control method based on the current status monitoring of video, it is characterised in that：In the import of crossing
Video camera, and the view finder of the video camera are set up above road towards the vehicle for sailing the entrance driveway into, the video camera is adopted
Collect the real time video image of the entrance of each guided vehicle road in the entrance driveway, Video Detection processing unit is in the real-time video
Virtual detection coil is set on image and the traffic behavior in the entrance driveway, logic point are detected by the virtual detection coil
Analysis unit carries out logical analyses and generates control adjustment signal according to logical analyses result to the traffic behavior in the entrance driveway,
The control is adjusted signal and sends traffic signaling equipment to by the logical analyses unit, and the traffic signaling equipment is according to the control
Adjustment signal is controlled or is adjusted to the timing scheme of the traffic light of the entrance driveway.
Which is further characterized by：
The virtual detection coil includes that lane detection coil, vehicle passing detection coil and vehicle have detection line
Circle, the lane detection coil cover all complete guided vehicle roads in the real time video image, the lane detection
Each guided vehicle road in coil is respectively arranged with the vehicle and passes through along the forward position of vehicle heading, rearward position
There is detection coil in detection coil, vehicle；
The Video Detection processing unit is by each Guide vehicle in entrance driveway described in the lane detection coil real-time detection
The traffic flow modes in road, the vehicle of each guided vehicle road in the entrance driveway is sailed into by the vehicle passing detection Coil Detector
There is the occupied of detection coil in time headway, the vehicle that there is each guided vehicle road of detection coil detection by the vehicle
State；
The logical analyses unit determines whether to match somebody with somebody the signal lighties of each bar guided vehicle road according to the traffic flow modes
When scheme be adjusted, when judging to be adjusted traffic signal timing scheme, the logical analyses unit is to described
Traffic signal controlling machine sends and does not carry out the control signal of traffic signal timing scheme adjustment, the traffic signaling equipment and control traffic
Signal lighties are run by default traffic signal timing scheme, when judgement needs to carry out the signal time distributing conception of a certain bar guided vehicle road
During adjustment, the logical analyses unit judges the guided vehicle road in green light phase place according to the time headway of the guided vehicle road
Whether there is after beginning and waste green light phase and started in green light phase place according to the waste green light phase and the guided vehicle road
There is the occupied state of detection coil with rear vehicle determine the traffic signal timing Adjusted Option to the guided vehicle road and to
Traffic signaling equipment sends traffic signal timing scheme adjustment signal, and the traffic signaling equipment controls this according to the Adjusted Option and leads
Extend or terminate to the green light phase signal in track.
Which is further characterised by：
Whether the Video Detection processing unit is occupied shape by vehicle queue by lane detection coil described in real-time detection
State is judging the entrance driveway traffic flow modes, if not occurring vehicle row in the arbitrary guided vehicle road in the lane detection coil
Team's phenomenon, then judge that the guided vehicle road is in smooth traffic flow modes, the signal of arbitrary guided vehicle road this described need not be matched somebody with somebody
When scheme be adjusted；If there is vehicle queue phenomenon, judgement side in the arbitrary guided vehicle road in the lane detection coil
Guided vehicle road is in queuing traffic flow modes, needs to row adjustment during the signal time distributing conception of arbitrary guided vehicle road this described；
The logical analyses unit judges whether deposit in each guided vehicle road of the entrance driveway according to the time headway
Green light phase is being wasted, the time headway t of collection is being compared with default safe headway T0, as t≤T0, judging described
Vehicle in each guided vehicle road is for compact train tracing model and there is no waste green light phase, then judges described each as t ＞ T0
Vehicle in guided vehicle road is discrete, waste green light phase；
The later waste green light phase and the guided vehicle road are started in its green light phase place according to arbitrary guided vehicle road
Vehicle there is the concrete step of the occupied state of detection coil to row adjustment during the signal time distributing conception of arbitrary guided vehicle road
Suddenly it is：
（1）In the case of t≤T0 states, when detecting after arbitrary guided vehicle road starts in green light phase place belonging to which
Vehicle there is detection coil and occupied by vehicle, then the logical analyses unit judges have vehicle parking to wait in the guided vehicle road
Or the green light phase time prolongation signal of the guided vehicle road is exported in slow current state and to the traffic signaling equipment；When
Detect arbitrary vehicle and there is detection coil and do not occupied by vehicle, then three sampling time intervals of continuous detecting, if described three
In individual sampling time interval the vehicle exist detection coil by vehicle occupy then the logical analyses unit to the friendship
Messenger machine exports the green light phase time of the guided vehicle road and extends signal, if the car in three sampling time intervals
There is detection coil is not occupied by vehicle always, and the logical analyses unit exports the Guide vehicle to the traffic signaling equipment
The green light phase time end signal in road；
（2）In the case of t ＞ T0 states, when detecting after arbitrary guided vehicle road starts in green light phase place belonging to which
The vehicle there is detection coil and do not occupied by vehicle, then the logical analyses unit judges that the vehicle has detection coil institute
Wait without vehicle parking in the guided vehicle road of category or green light slow current and that the guided vehicle road is exported to the traffic signaling equipment
, there is detection when the vehicle belonging to which is detected after arbitrary guided vehicle road starts in green light phase place in phase place end signal
Coil is occupied by vehicle, then three sampling interval durations of continuous detecting, if the vehicle has inspection in three sampling interval durations
Test coil is occupied by vehicle always, and the logical analyses unit exports the green light phase of the guided vehicle road to the traffic signaling equipment
Position time extending signal, is present if the interior vehicle of three sampling interval durations described if detection coil is not occupied by vehicle always
Logical analyses unit exports the green light phase time end signal of the guided vehicle road to the traffic signaling equipment；
The green light phase time is extended
Green light maximum phase time, subsequent green light phase place terminate, and the green light finish time must be in the complete phase place of system operation most
After little green time；
The green light phase time extends and is incremented by 2 seconds every time.
Based on the real-time optimization whistle control system of the current status monitoring of video, which includes traffic signaling equipment, the traffic
Semaphore is communicated to connect with traffic control center by communication module, it is characterised in that：Which is also included for realizing sensing in real time
The video detector of signal control function, is electricly connected by optical cable between the video detector and the traffic signaling equipment,
The video detector includes video camera, Video Detection processing unit and logical analyses unit, and the camera pedestal is located at intersection
Mouthful entrance driveway above and the view finder of the video camera be used to adopt towards the vehicle of the entrance driveway, the video camera is sailed into
Collect the real time video image of the entrance of each guided vehicle road in the entrance driveway, the Video Detection processing unit is to real-time video
Image carries out the setting of virtual detection coil and by entrance driveway traffic behavior, institute described in the virtual detection coil real-time detection
Stating logical analyses unit carries out logical analyses to the entrance driveway traffic behavior and is believed to the traffic according to logical analyses result
Number machine conveying control adjustment signal, the traffic signaling equipment are carried out to the crossroad traffic signal lamp according to the control adjustment signal
Control is adjusted.
Which is further characterized by：
The virtual detection coil includes that lane detection coil, vehicle passing detection coil and vehicle have detection line
Circle, the lane detection coil cover all complete guided vehicle roads in the real time video image, the lane detection
Each guided vehicle road in coil is respectively arranged with the vehicle and passes through along the forward position of vehicle heading, rearward position
There is detection coil in detection coil, vehicle；
The Video Detection processing unit is by each Guide vehicle in entrance driveway described in the lane detection coil real-time detection
The traffic flow modes in road, the vehicle of each guided vehicle road in the entrance driveway is sailed into by the vehicle passing detection Coil Detector
There is the occupied of detection coil in time headway, the vehicle that there is each guided vehicle road of detection coil detection by the vehicle
State；
The logical analyses unit determines whether to match somebody with somebody the signal lighties of each bar guided vehicle road according to the traffic flow modes
When scheme be adjusted, when judge traffic signal timing scheme need not be adjusted when, the traffic signaling equipment control traffic
Signal lighties are run by default traffic signal timing scheme, when judgement needs to carry out the signal time distributing conception of a certain bar guided vehicle road
During adjustment, the logical analyses unit judges the guided vehicle road in green light phase place according to the time headway of the guided vehicle road
Whether there is after beginning and waste green light phase and started in green light phase place according to the waste green light phase and the guided vehicle road
There is the occupied state of detection coil with rear vehicle determine the traffic signal timing Adjusted Option to the guided vehicle road and to
Traffic signaling equipment sends traffic signal timing scheme adjustment signal, and the traffic signaling equipment controls this according to the Adjusted Option and leads
Extend or terminate to the green light phase signal in track；
The video detector is set up on the electronic eye used for catching red light runner mounting rod of the entrance driveway, the electronics that makes a dash across the red light
Police's mounting rod and the entrance driveway stop line are 15 meters～20 meters apart from L1；The corresponding import of the lane detection coil
Region between the actual area in road and the electronic eye used for catching red light runner mounting rod be the video detector video camera due to
Mounted angle leads to not the region detected, length L2 in the region is 10 meters～15 meters；The lane detection coil correspondence institute
Length L3 for stating entrance driveway actual area is 30 meters～50 meters.
The beneficial effects of the present invention is：Which is by being erected in the camera acquisition entrance driveway above crossing inlet road
Real time video image, Video Detection processing unit carry out the setting of virtual detection coil and by virtual inspection to real time video image
Detecting the traffic behavior in entrance driveway, logical analyses unit carries out logical analyses simultaneously to the traffic behavior in entrance driveway to test coil
Control adjustment signal is sent to traffic signaling equipment according to logical analyses result, traffic signaling equipment is according to control adjustment signal to import
The timing scheme of the traffic light in road is controlled or adjusts, so as to realize the real-time actuated signal control of intersection single-point
Target；Which is based on Video Detection, traffic light is carried out with sensing control in real time according to intersection real-time traffic states, sets up
The more traditional actuated signal control system gathered based on detection coil of actuated signal control system on the basis of Video Detection, tool
Have the advantages that detection range is big, it is flexible, convenient for installation and maintenance to arrange, detection parameter is more and detection data is accurate.
Description of the drawings
Fig. 1 is real-time optimization signal control method flow chart of the present invention based on the current status monitoring of video；
Fig. 2 is topology diagram of the present invention based on the real-time optimization whistle control system of the current status monitoring of video；
Fig. 3 be video camera in real-time optimization whistle control system of the embodiment of the present invention based on the current status monitoring of video,
The layout of virtual detection coil.
Specific embodiment
See Fig. 1, the view finder direction that video camera 101 and video camera 101 are set up above the entrance driveway of intersecting roads is sailed
Enter the vehicle of entrance driveway, the real time video image of the entrance of each guided vehicle road, Video Detection in the collection entrance driveway of video camera 101
Processing unit 102 sets virtual detection coil, including lane detection coil 201, vehicle passing detection on real time video image
There is detection coil 203 in coil 202 and vehicle, complete Guide vehicle in the covering real time video image of lane detection coil 201
Road, each guided vehicle road in lane detection coil 201 are respectively provided with along the forward position of vehicle heading, rearward position
With the presence of vehicle passing detection coil 202, vehicle detection coil 203, Video Detection processing unit 102 passes through lane detection coil
Traffic flow modes of each guided vehicle road in 201 real-time detection entrance driveway, import is sailed into by the detection of vehicle passing detection coil 202
The time headway of the vehicle of each guided vehicle road in road, there is detection coil 203 by vehicle and detect that the vehicle of each guided vehicle road is deposited
In the occupied state of detection coil；
When the guided vehicle road that Video Detection processing unit 102 is detected in lane detection coil 201 is not accounted for by vehicle queue
Have, then logical analyses unit 103 is judged this moment as smooth traffic flow modes, and logical analyses unit 103 is to traffic signaling equipment
30 conveyings do not carry out the control signal of traffic signal timing scheme adjustment, and the control traffic light 70 of traffic signaling equipment 30 continue by pre-
If timing scheme carry out vehicle clearance；
Arranged by vehicle when Video Detection processing unit 102 detects a certain guided vehicle road in the range of lane detection coil 203
Team occupies, then have logical analyses unit 103 to judge that the guided vehicle road is in queuing congestion status, logical analyses unit 103 this moment
Square t and default safety during the vehicle headstock that Video Detection processing unit 102 is collected by vehicle passing detection coil 202
Headway T0 compares：
As t≤T0, the vehicle in the guided vehicle road is judged as compact train tracing model and there is no waste green light phase,
Video Detection processing unit 102 detects that the vehicle of the guided vehicle road has whether detection coil 203 is occupied, if the guided vehicle road
Vehicle there is detection coil 203 and occupied by vehicle, then logical analyses unit 103 judges there is vehicle parking etc. in the guided vehicle road
The green light phase time treated or export the guided vehicle road in slow current state and to traffic signaling equipment extends signal；Work as inspection
There is detection coil 203 and do not occupied by vehicle in the vehicle for measuring the guided vehicle road, then 102 continuous detecting of Video Detection processing unit
, there is logic if detection coil 203 is occupied by vehicle if the interior vehicle of three sampling time intervals in three sampling time intervals
Analytic unit 103 extends signal to the green light phase time that traffic signaling equipment 30 exports the guided vehicle road, and traffic signaling equipment 30 is controlled
The green light phase time for making the guided vehicle road extends, if the vehicle has detection coil 203 not in three sampling time intervals
Directly occupied by vehicle, logical analyses unit 103 terminates letter to the green light phase time that traffic signaling equipment 30 exports the guided vehicle road
Number, traffic signaling equipment 30 controls the green light phase time of the guided vehicle road to be terminated；
As t ＞ T0 then logical analyses unit 103 judge vehicle in the guided vehicle road as it is discrete, waste green light phase,
Do not occupied by vehicle when the vehicle that Video Detection processing unit 102 detects the guided vehicle road has detection coil, then logic point
Analysis unit 103 judges that the vehicle has guided vehicle road belonging to detection coil in the state that waits without vehicle parking or slowly pass through
And to the green light phase place end signal of the output of traffic signaling equipment 30 guided vehicle road, traffic signaling equipment 30 controls the guided vehicle road
Green light phase place terminates；When the vehicle that Video Detection processing unit 102 detects the guided vehicle road has detection coil 103 by vehicle
Occupy, then 102 continuous detecting of Video Detection processing unit, three sampling interval durations, if the car in three sampling interval durations
There is detection coil 103 is occupied by vehicle always, and logical analyses unit 103 exports the guided vehicle road to traffic signaling equipment 30
Green light phase time extend signal, traffic signaling equipment 30 control the guided vehicle road green light phase time extend, if this three
There is detection coil 203 and do not occupied then logical analyses unit 103 by vehicle always and believe to traffic in the vehicle in sampling interval duration
Number machine 30 exports the green light phase place end signal of the guided vehicle road.
Green light phase time extends by the way of incremented in small steps until green light phase time reaches default green light maximum
Phase time, subsequent green light phase place terminate, and green light finish time must system operation complete phase place minimum green time it
Afterwards；Green light phase time extends and is incremented by 2 seconds every time.
Based on the real-time optimization whistle control system of the current status monitoring of video, Fig. 2 and Fig. 3 is seen, which includes traffic signal
Machine 30 and the video detector 10 for realizing real-time actuated signal control function, video detector 10 and traffic signaling equipment 30 it
Between electricly connected by optical cable, traffic signaling equipment 30 is communicated to connect with traffic control center 60 by communication module 50, video inspection
Surveying device 10 includes video camera 101, Video Detection processing unit 102 and logical analyses unit 103, and video camera 101 is set up in intersection
Above the entrance driveway of road and video camera view finder towards sailing the vehicle of entrance driveway, Video Detection processing unit 102 pairs into
The real time video image in entrance driveway that video camera 101 shoots carries out the setting of virtual detection coil 20 and by virtual detection line
20 real-time detection entrance driveway traffic behaviors are enclosed, logical analyses unit 103 carries out logical analyses basis to entrance driveway traffic behavior
, to the conveying control adjustment signal of traffic signaling equipment 30, traffic signaling equipment 30 is according to control adjustment signal to the road for logical analyses result
Oral sex ventilating signal lamp 70 is controlled or adjusts.Under networking control state, traffic control center 60 is according to road junction
Real-time traffic stream mode by communication module 50 to traffic signaling equipment 30 send control signal, traffic signaling equipment 30 is according to the control
Signal processed controls whether the crossing carries out real-time actuated signal control or perform fixed signal control.
Virtual detection coil 20 includes that lane detection coil 201, vehicle passing detection coil 202 and vehicle have detection
Coil 203, lane detection coil 201 cover all complete guided vehicle roads in real time video image, track inspection in the present embodiment
Test coil 201 covers four guided vehicle roads in real time video image, each guided vehicle road edge in lane detection coil 201
The forward position of vehicle heading, rearward position are respectively arranged with vehicle passing detection coil 202, vehicle and there is detection coil
203；Traffic flow of the Video Detection processing unit 102 by each guided vehicle road in 201 real-time detection entrance driveway of lane detection coil
State, by vehicle passing detection coil 202 detection sail into the vehicle of each guided vehicle road in entrance driveway time headway t, pass through
The detection coil 203 that vehicle has detects that the vehicle of each guided vehicle road has the occupied state of detection coil；
Logical analyses unit 103 determines whether the traffic signal timing scheme to each bar guided vehicle road according to traffic flow modes
It is adjusted, when judging to be adjusted traffic signal timing scheme, the control traffic light 70 of traffic signaling equipment 30
Run by default traffic signal timing scheme, when judging to be adjusted the signal time distributing conception of a certain bar guided vehicle road, patrol
Collect analytic unit 103 and green light is wasted to judge to whether there is in the guided vehicle road according to the time headway t of the guided vehicle road
Simultaneously there is the occupied state of detection coil 203 to determine according to the vehicle for wasting green light phase and the guided vehicle road in state
Traffic signal timing Adjusted Option to the guided vehicle road simultaneously sends traffic signal timing scheme adjustment signal to traffic signaling equipment, hands over
Messenger machine extends or terminates according to the signal lamp green modulating signal that the Adjusted Option controls the guided vehicle road；
Video detector 10 is set up on the electronic eye used for catching red light runner mounting rod 40 of entrance driveway, and electronic eye used for catching red light runner is installed
Bar 40 is 15 meters～20 meters apart from L1 with entrance driveway stop line；Lane detection coil 201 correspondence entrance driveway actual area with
Region between electronic eye used for catching red light runner mounting rod is the video camera 101 of video detector as mounted angle leads to not detection
Region, length L2 in the region is 10 meters～15 meters；Length L3 of 201 corresponding entrance driveway actual area of lane detection coil is
30 meters～50 meters.
Claims (8)
1. the real-time optimization signal control method based on the current status monitoring of video, it is characterised in that：In the entrance driveway of crossing
Top sets up the video camera for collecting device, gathers the real time video image of each guided vehicle road in the entrance driveway porch, and
And the video camera, towards the vehicle for sailing the entrance driveway into, Video Detection processing unit is set on the real time video image
Virtual detection coil, and the traffic behavior in the entrance driveway, logical analyses unit pair are detected by the virtual detection coil
Traffic behavior in the entrance driveway carries out logical analyses, and generates control adjustment signal according to logical analyses result, described to patrol
Collect analytic unit and send the control adjustment signal to traffic signaling equipment, the traffic signaling equipment is believed according to the control adjustment
Number the timing scheme of the traffic light of the entrance driveway is controlled or is adjusted；
The virtual detection coil includes that lane detection coil, vehicle passing detection coil and vehicle have detection coil, institute
State lane detection coil and cover all complete guided vehicle roads in the real time video image, in the lane detection coil
Each guided vehicle road be respectively arranged with the vehicle passing detection line along the forward position of vehicle heading, rearward position
There is detection coil in circle, vehicle；The Video Detection processing unit is by import described in the lane detection coil real-time detection
Traffic flow modes of each guided vehicle road in road, sailed into by the vehicle passing detection Coil Detector and be respectively oriented in the entrance driveway
There is detection in the time headway of the vehicle in track, the vehicle that there is each guided vehicle road of detection coil detection by the vehicle
The occupied state of coil.
2. the real-time optimization signal control method based on the current status monitoring of video according to claim 1, its feature exist
In：The logical analyses unit determines whether the traffic signal timing scheme to each bar guided vehicle road according to the traffic flow modes
It is adjusted, when judging to be adjusted traffic signal timing scheme, the logical analyses unit believed to the traffic
Number control machine sends and does not carry out the control signal of traffic signal timing scheme adjustment, the traffic signaling equipment and control traffic light
Run by default traffic signal timing scheme, when judgement needs to be adjusted the signal time distributing conception of a certain bar guided vehicle road
When, the logical analyses unit is wasted to judge to whether there is in the guided vehicle road according to the time headway of the guided vehicle road
Green light phase, and there is the occupied state of detection coil according to the vehicle of the waste green light phase and the guided vehicle road
To determine the traffic signal timing Adjusted Option to the guided vehicle road, and traffic signal timing scheme adjustment is sent to traffic signaling equipment
Signal, the traffic signaling equipment extend or tie according to the signal lamp green modulating signal that the Adjusted Option controls the guided vehicle road
Beam.
3. the real-time optimization signal control method based on the current status monitoring of video according to claim 1, its feature exist
In：Whether the Video Detection processing unit is by lane detection coil described in real-time detection by vehicle queue possession state sentencing
The fixed entrance driveway traffic flow modes, if there is not vehicle queue phenomenon in the arbitrary guided vehicle road in the detection zone,
It is judged to smooth traffic flow modes, the signal time distributing conception of arbitrary guided vehicle road this described need not be adjusted；If described
There is vehicle queue phenomenon in arbitrary guided vehicle road in detection zone, be then judged to queuing traffic flow modes, need to the institute
Row adjustment when stating the signal time distributing conception of arbitrary guided vehicle road.
4. the real-time optimization signal control method based on the current status monitoring of video according to claim 1, its feature exist
In：The logic analysis module is judged according to the time headway in each guided vehicle road of the entrance driveway with the presence or absence of waste
Green light phase, the time headway t of collection is compared with default safe headway T0, as t≤T0, judges each guiding
Vehicle in track is for compact train tracing model and there is no waste green light phase, then judges each Guide vehicle as t ＞ T0
Vehicle in road is discrete, waste green light phase.
5. the real-time optimization signal control method based on the current status monitoring of video according to claim 4, its feature exist
In：The occupied of detection coil is had according to the vehicle of the waste green light phase and the guided vehicle road of arbitrary guided vehicle road
State is concretely comprised the following steps to row adjustment during the signal time distributing conception of arbitrary guided vehicle road：
（1）In the case of t≤T0 states, when the vehicle for detecting arbitrary guided vehicle road has detection coil by vehicle
Occupy, then the logical analyses unit judge to have in the guided vehicle road vehicle parking wait or in slowly current state and to
The traffic signaling equipment exports the green light phase time of the guided vehicle road and extends signal；There is detection when arbitrary vehicle is detected
Coil is not occupied by vehicle, then three sampling time intervals of continuous detecting, if the car in three sampling time intervals
There is detection coil is occupied by vehicle, and the logical analyses unit exports the green light of the guided vehicle road to the semaphore
Phase time extends signal, if the interior vehicle of three sampling time intervals has detection coil and do not accounted for by vehicle always
Have, the logical analyses unit exports the green light phase place end signal of the guided vehicle road to the semaphore；
（2）In the case of t ＞ T0 states, do not occupied by vehicle when detecting arbitrary vehicle and there is detection coil, then institute
State
And the green light phase place end signal of the guided vehicle road is exported to the traffic signaling equipment, there is inspection when arbitrary vehicle is detected
Test coil is occupied by vehicle, then three sampling interval durations of continuous detecting, if the vehicle is present in three sampling interval durations
Detection coil is occupied by vehicle always, and the logical analyses unit exports the green light of the guided vehicle road to the traffic signaling equipment
Phase time extends signal, there is institute if detection coil is not occupied by vehicle always if the interior vehicle of three sampling interval durations
State the green light phase place end signal that logical analyses unit exports the guided vehicle road to the traffic signaling equipment.
6. according to arbitrary described real-time optimization signal control method based on the current status monitoring of video in claim 2～5,
It is characterized in that：The green light phase time is extended
The green light maximum phase time, subsequent green light phase place terminate, and the green light finish time must be in the complete phase place of system operation
After minimum green time.
7. the real-time optimization whistle control system based on the current status monitoring of video, which includes traffic signaling equipment, the traffic letter
Number machine is communicated to connect with traffic control center by communication module, it is characterised in that：Which is also included for realizing sensing letter in real time
The video detector of number control function, is electricly connected by optical cable between the video detector and the traffic signaling equipment, institute
Stating video detector includes video camera, Video Detection processing unit and logical analyses unit, and the camera pedestal is located at crossing
Entrance driveway above and the view finder of the video camera processes single towards the vehicle of the entrance driveway, the Video Detection is sailed into
The real time video image in entrance driveway that unit is shot to the video camera carries out the setting of virtual detection coil and by the void
Intend entrance driveway traffic behavior described in detection coil real-time detection, the logical analyses unit is carried out to the entrance driveway traffic behavior
Logical analyses and according to logical analyses result to the traffic signaling equipment conveying control adjustment signal, the traffic signaling equipment according to
The control adjustment signal is controlled or is adjusted to the entrance driveway traffic light；
The virtual detection coil includes that lane detection coil, vehicle passing detection coil and vehicle have detection coil, institute
State lane detection coil and cover all complete guided vehicle roads in the real time video image, it is every in the lane detection coil
One guided vehicle road along the forward position of vehicle heading, rearward position be respectively arranged with the vehicle passing detection coil,
There is detection coil in vehicle；The Video Detection processing unit is by entrance driveway described in the lane detection coil real-time detection
The traffic flow modes of each guided vehicle road, each guided vehicle road in the entrance driveway is sailed into by the vehicle passing detection Coil Detector
Vehicle time headway, there is detection coil by the vehicle and detect that the vehicle of each guided vehicle road has detection coil
Occupied state.
8. the real-time optimization whistle control system based on the current status monitoring of video according to claim 7, its feature exist
In：The video detector is set up on the electronic eye used for catching red light runner mounting rod of the entrance driveway, the electronic eye used for catching red light runner
Mounting rod and the entrance driveway stop line are 15 meters～20 meters apart from L1；The corresponding entrance driveway of the lane detection coil
Region between actual area and the electronic eye used for catching red light runner mounting rod is the video camera of the video detector due to installing
Inclination angle leads to not the region detected, length L2 in the region is 10 meters～15 meters；Enter described in the lane detection coil correspondence
Length L3 of mouth road actual area is 30 meters～50 meters.
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| CN105046954B (en) * | 2015-06-18 | 2017-10-17 | 无锡华通智能交通技术开发有限公司 | The current state dynamic detection system in crossing and method analyzed based on video intelligent |
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| CN202422425U (en) * | 2011-12-23 | 2012-09-05 | 上海海事大学 | Video-detection-based intelligent signal control system for crossing |
| CN103383816B (en) * | 2013-07-01 | 2015-09-02 | 青岛海信网络科技股份有限公司 | The traffic signal control method that multiplexing electronic police mixed traffic flow detects and device |
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