CN102034360B - Method and device for realizing self-adaption of traffic light - Google Patents
Method and device for realizing self-adaption of traffic light Download PDFInfo
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Abstract
The invention relates to a method and a device for realizing self-adaption of a traffic light. The method comprises the following steps of: acquiring traffic flow information in a predetermined range in each direction of an intersection by shooting in real time; and controlling the traffic light in a traffic light conversion period according to the traffic flow information, history traffic light information stored in a traffic light information database and preset pass matching modes. Based on the acquired real-time traffic flow information in different directions of the intersection, calculating history pass data under the same condition are calculated according to the mutex relationship among pass directions of the intersection and all preset pass matching modes calculated according to the mutex relationship so as to obtain optimal pass time of the intersection; and an appropriate pass scheme can be provided for the intersection in each traffic light conversion period in a step-by-step iteration mode, so that average vehicle waiting time is reduced, optimal pass control of the intersection is realized, intelligent self-adaption effect of the traffic light is achieved and road resource is utilized more fully.
Description
Technical field
The present invention relates to the traffic signals control field, relate in particular to a kind of adaptive method of traffic lights and device realized.
Background technology
In existing controlling system of traffic light, to the substantially realization intellectuality of control of traffic lights, the parameters such as the conversion order of its traffic lights and switching time are all by manually being fixedly installed, and according to real-time road conditions, do not carry out active and adapt to.
At present, also having can be according to the traffic light system of vehicle flowrate auto-adjustment control parameter, such as the application number Chinese patent that is 200810112910.3, the purpose of this patent is according to the magnitude of traffic flow variation of different directions and the traffic in whole zone, automatically carry out the adjusting that traffic lights are controlled parameter, to improve the traffic efficiency at crossing, realize region-wide traffic optimization.Its system comprises the crossing control system that universe traffic control center communicates by letter with some and described universe traffic control center, and crossing control system comprises manual input device, force switch device, intelligent detection device and remote communication module etc.The obtaining and analyzing of video image when satisfying the need cause for gossip of this patent, each road stopped vehicle is identified, calculate vehicle lay-off queuing distance, go out to revise by default program calculating and sending the instruction that traffic lights are controlled parameter on this basis again, reached the purpose of traffic lights dynamically adapting road conditions.
But, this patented technology has following deficiency: although provide some traffic lights to control the adjustment principle of parameter, but it has mainly solved according to the crossing vehicle lay-off and has queued up and control parameter apart from traffic lights are set, thereby can't control a parameter relatively accurately is provided traffic lights.
Summary of the invention
Fundamental purpose of the present invention is to provide a kind of adaptive method of traffic lights and device realized, is intended to improve the traffic efficiency of traffic light intersection.
In order to achieve the above object, the present invention proposes a kind of adaptive method of traffic lights that realizes, comprising:
Take in real time the car flow information of obtaining in all directions preset range of crossing; Described car flow information comprises wagon flow quantity and wagon flow direction;
According to car flow information, be stored in historical traffic lights information in the traffic lights information bank and default current matching way, at traffic lights, in the change-over period, traffic lights are controlled.
Wherein, described according to car flow information, be stored in historical traffic lights information in the traffic lights information bank and default current matching way, the step of in the change-over period, traffic lights being controlled at traffic lights comprises:
Obtain the historical vehicle pass-through time corresponding with vehicle fleet size on current same direction from the traffic lights information bank, average and make progress the vehicle pass-through time as current the party;
According to the vehicle pass-through time on all directions and the mutex relation of each current direction, it is the set vehicle transit time of not mutual exclusion;
Set transit time according to each, utilize the exhaustive computations method to calculate current matching way the shortest when total in all default current matching ways, as current current matching way;
Respectively set transit time and current current matching way is controlled traffic lights with described.
Wherein, described according to the vehicle pass-through time on all directions and the mutex relation of each current direction, for the step of the set vehicle transit time of not mutual exclusion comprises:
Choose the setting transit time of transit time the longest in the transit time of vehicle of not mutual exclusion as the vehicle of described not mutual exclusion.
Preferably, described according to car flow information, be stored in historical traffic lights information in the traffic lights information bank and default current matching way, the step of in the change-over period, traffic lights being controlled at traffic lights also comprises:
In the traffic lights information bank, do not exist the historical vehicle pass-through corresponding with vehicle fleet size on current same direction during the time, get the acquiescence transit time and make progress the vehicle pass-through time as current the party.
Preferably, after the described step of traffic lights being controlled with setting transit time and current current matching way, also comprise:
By current traffic lights in the change-over period information of each current direction deposit in the traffic lights information bank.
The present invention also proposes a kind of adaptive device of traffic lights of realizing, comprising:
The car flow information acquisition module, for taking and obtain the car flow information in all directions preset range of crossing in real time; Described car flow information comprises wagon flow quantity and wagon flow direction;
The traffic lights control module, for according to car flow information, the historical traffic lights information that is stored in the traffic lights information bank and default current matching way, controlled traffic lights in the change-over period at traffic lights.
Wherein, described traffic lights control module comprises:
Acquiring unit, for obtain the historical vehicle pass-through time corresponding with vehicle fleet size current same direction from the traffic lights information bank, average and make progress the vehicle pass-through time as current the party;
Setup unit, according to the vehicle pass-through time on all directions and the mutex relation of each current direction, is the set vehicle transit time of not mutual exclusion;
Computing unit for setting transit time, utilizes the exhaustive computations method to calculate current matching way the shortest when total in all default current matching ways, as current current matching way according to each;
Control module, for respectively setting transit time and current current matching way is controlled traffic lights with described.
Wherein, described setup unit also for the transit time of the vehicle of choosing not mutual exclusion the longest transit time as the setting transit time of the vehicle of described not mutual exclusion.
Preferably, described acquiring unit, also for do not exist the historical vehicle pass-through corresponding with vehicle fleet size on current same direction during the time when the traffic lights information bank, is got the acquiescence transit time and is made progress the vehicle pass-through time as current the party.
Preferably, described device also comprises:
Memory module, for by current traffic lights in the change-over period information of each current direction deposit the traffic lights information bank in.
A kind of adaptive method of traffic lights and device realized that the present invention proposes, by the mutex relation by each current direction of crossing, all directions acquiescence transit time and all default current matching way that calculates according to mutex relation, deposit in the traffic lights information bank, on the basis that obtains crossing, place different directions real-time traffic flow amount information, historical current data under same condition are calculated, obtained the current Best Times in crossing; And by the mode of iteration progressively, make each traffic lights change-over period of crossing, place that a suitable current scheme all can be provided, reduced the vehicle average latency, improved the traffic efficiency of traffic light intersection, realized the Optimal Control current to crossing, reach the adaptive effect of intelligent traffic light, thereby utilized more fully path resource.
The accompanying drawing explanation
Fig. 1 is that the present invention realizes the adaptive method one embodiment schematic flow sheet of traffic lights;
Fig. 1 a is the exemplary plot of a crossroad;
Fig. 2 is that the present invention realizes in adaptive method one embodiment of traffic lights according to car flow information, is stored in historical traffic lights information in the traffic lights information bank and default current matching way, the schematic flow sheet of in the change-over period, traffic lights being controlled at traffic lights;
Fig. 3 is that the present invention realizes the adaptive device one example structure schematic diagram of traffic lights;
Fig. 4 is the structural representation that the present invention realizes traffic lights control module in adaptive device one embodiment of traffic lights.
In order to make technical scheme of the present invention clearer, clear, below in conjunction with accompanying drawing, be described in further detail.
Embodiment
Solution for embodiment of the invention is mainly to deposit in the traffic lights information bank by the mutex relation by each current direction of crossing, all directions acquiescence transit time and all default current matching way that calculates according to mutex relation, on the basis that obtains crossing, place different directions real-time traffic flow amount information, historical current data under same condition are calculated, obtained the current Best Times in crossing.
As shown in Figure 1, one embodiment of the invention proposes a kind of adaptive method of traffic lights that realizes, comprising:
Step S101, take the car flow information of obtaining in all directions preset range of crossing in real time;
Car flow information comprises wagon flow quantity and wagon flow direction;
In order to realize the reasonable control to crossroads traffic light, at first by real-time wagon flow video pictures of taking the crossing all directions such as road video cameras, the scope of taking can be set according to actual road conditions, and as shown in Figure 1a, the dotted line scope is the vehicle pass-through target in the traffic lights change-over period.
Carry out graphical analysis according to the wagon flow video pictures of taking, therefrom obtain car flow information, comprising: the time that the vehicle fleet size of all directions, vehicle pass-through are used etc.
Step S102, according to car flow information, be stored in historical traffic lights information in the traffic lights information bank and default current matching way, controlled traffic lights in the change-over period at traffic lights.
In the present embodiment, be provided with the traffic lights information bank of the related data for storing each traffic lights change-over period, comprise current direction, traffick quantity, the vehicle pass-through time etc., store the common data at crossing, place simultaneously, mutex relation (as shown in table 1 below) as the current direction in each crossing, (for example " E-> W " can be simultaneously current with " E-> S " for all directions acquiescences transit time and all default current matching way that calculates according to mutex relation, also can be simultaneously current etc. with " W-> E "), so that later stage reference, provide one progressively to reach optimum foundation.
? | E->W | E->S | S->N | S->W | W->E | W->N | N->S | N->E |
E->W | ? | Y | ? | Y | Y | ? | ? | ? |
E->S | Y | ? | ? | ? | ? | Y | Y | ? |
S->N | ? | ? | ? | Y | ? | Y | Y | ? |
S->W | Y | ? | Y | ? | ? | ? | ? | Y |
W->E | Y | ? | ? | ? | ? | Y | ? | Y |
W->N | ? | Y | Y | ? | Y | ? | ? | ? |
N->S | ? | Y | Y | ? | ? | ? | ? | Y |
N->E | ? | ? | ? | Y | Y | ? | Y | ? |
Table 1
Upper table 1 means the exclusive message example between each current direction of crossroad, each alphabetical implication is: E(east), S(south), the W(west), N(north), " E-> W " mean from the east orientation west to, in form, alphabetical Y means that corresponding both direction can pass through simultaneously; Do not consider temporarily in this example the situation to right travel.
When first use car flow information is carried out traffic lights control, at first need each current direction mutex relation of crossing, place, all directions acquiescence transit time and possible various current matching way are input in the traffic lights information bank, when a traffic lights change-over period finishes, also need the information of each the current direction in this cycle (is comprised to current direction, the target passing vehicle number, the transit time of setting, complete the transit time of the actual use of target or the interior actual current vehicle number of transit time of setting etc.) as historical traffic lights information, deposit in the traffic lights information bank.
Vehicle fleet size on each wagon flow direction of the crossing obtained according to step S101 and each wagon flow direction, search historical traffic lights information from the traffic lights database, therefrom obtain historical record under equal conditions, such as the actual transit time of same vehicle quantity on identical wagon flow direction is the historical vehicle pass-through time, and each historical vehicle pass-through time is averaged to be made as under this condition completes current required best transit time when vehicle in front.If recorded the current best transit time of each historical vehicle pass-through time under equal conditions in the traffic lights database, without calculating, directly obtain this current best transit time.
If carry out first traffic lights control or do not exist the historical vehicle pass-through corresponding with vehicle fleet size on current same direction during the time in the traffic lights information bank, get the acquiescence transit time and complete current required best transit time as the current the party vehicle that makes progress.
Obtain all directions after the current time needed, according to the mutex relation between each current direction, calculate the shortest a kind of current matching way of interim T.T. of this week by the method for exhaustion, for example: if " E-> W " need 50 seconds, " W-> E " need 30 seconds, " E-> S " need 40 seconds, select " E-> W " with " E-> S " simultaneously current, set the transit time of each current direction simultaneously, for example, when " E-> W " and " E-> S " are simultaneously current, the setting transit time is both required time the greater, " E-> W " the 50 seconds needed time that is about to is as both direction current common setting transit time simultaneously.
Then, according to all setting transit times, and utilize the exhaustive computations method to calculate current matching way the shortest when total in all default current matching ways, as current current matching way; And using that each sets transit time and current current matching way is controlled traffic lights as the traffic lights parameter.
After this cycle is controlled end, also need the information of each current direction in this cycle is deposited in the traffic lights information bank.Using the reference frame of the traffic lights parameter being controlled as next time, iteration progressively thus, make each traffic lights change-over period at crossing, place that a suitable current scheme all can be provided, reduce the vehicle average latency, the Optimal Control that realization is current to crossing, reach the adaptive effect of intelligent traffic light, thereby utilized more fully path resource.
As shown in Figure 2, step S102 comprises:
Step S1021 obtains the historical vehicle pass-through time corresponding with vehicle fleet size on current same direction from the traffic lights information bank, averages and makes progress the vehicle pass-through time as current the party;
In the traffic lights information bank, do not exist the historical vehicle pass-through corresponding with vehicle fleet size on current same direction during the time, get the acquiescence transit time and make progress the vehicle pass-through time as current the party.
Step S1022, according to the vehicle pass-through time on all directions and the mutex relation of each current direction, is the set vehicle transit time of not mutual exclusion;
Wherein, the vehicle of not mutual exclusion is different but the vehicle that can be simultaneously current of finger direction.Choose the setting transit time of transit time the longest in the transit time of vehicle of not mutual exclusion as the vehicle of not mutual exclusion.
Step S1023 sets transit time according to each, utilizes the exhaustive computations method to calculate current matching way the shortest when total in all default current matching ways, as current current matching way;
Step S1024, controlled traffic lights with each setting transit time and current current matching way.
Step S1025, by current traffic lights in the change-over period information of each current direction deposit in the traffic lights information bank.
Wherein, the information of each current direction comprises in the current traffic lights change-over period: the transit time of current direction, target passing vehicle number, setting, whether complete target, if so, also need to have recorded the transit time of the actual use of target; If not, also need record to set the interior actual current vehicle number that completes of transit time, for example " E-> W; target passing vehicle number 15; setting transit time is 50 seconds; set in transit time and completed target; completing the actual time used of target is 45 seconds ", be written in the traffic lights information bank, search under same condition simultaneously (" E-> W; complete current 15 cars ") historical record, obtain actual transit time used in corresponding record, average and be made as current best transit time current under this condition.So that during next time inquiry traffic lights information bank with reference to use.
The present embodiment, on the basis that obtains crossing, place different directions real-time traffic flow amount information, is calculated historical current data under same condition, obtains the current Best Times in crossing, and gradual perfection, has realized the Optimal Control current to crossing.
As shown in Figure 3, one embodiment of the invention proposes a kind of adaptive device of traffic lights of realizing, comprising: car flow information acquisition module 301 and traffic lights control module 302, wherein:
Car flow information acquisition module 301, for taking and obtain the car flow information in all directions preset range of crossing in real time; Described car flow information comprises wagon flow quantity and wagon flow direction;
In order to realize the reasonable control to crossroads traffic light, at first by real-time wagon flow video pictures of taking the crossing all directions such as video cameras in car flow information acquisition module 301, the scope of taking can be set according to actual road conditions, as shown in Figure 1a, the dotted line scope is the vehicle pass-through target in the traffic lights change-over period.
Carry out graphical analysis according to the wagon flow video pictures of taking, therefrom obtain car flow information, comprising: the time that the vehicle fleet size of all directions, vehicle pass-through are used etc.
Traffic lights control module 302, for according to car flow information, the historical traffic lights information that is stored in the traffic lights information bank and default current matching way, controlled traffic lights in the change-over period at traffic lights.
In the present embodiment, be provided with the traffic lights information bank of the related data for storing each traffic lights change-over period, comprise current direction, traffick quantity, the vehicle pass-through time etc., store the common data at crossing, place simultaneously, mutex relation (as shown in table 1 below) as the current direction in each crossing, (for example " E-> W " can be simultaneously current with " E-> S " for all directions acquiescences transit time and all default current matching way that calculates according to mutex relation, also can be simultaneously current etc. with " W-> E "), so that later stage reference, provide one progressively to reach optimum foundation.
? | E->W | E->S | S->N | S->W | W->E | W->N | N->S | N->E |
E->W | ? | Y | ? | Y | Y | ? | ? | ? |
E->S | Y | ? | ? | ? | ? | Y | Y | ? |
S->N | ? | ? | ? | Y | ? | Y | Y | ? |
S->W | Y | ? | Y | ? | ? | ? | ? | Y |
W->E | Y | ? | ? | ? | ? | Y | ? | Y |
W->N | ? | Y | Y | ? | Y | ? | ? | ? |
N->S | ? | Y | Y | ? | ? | ? | ? | Y |
N->E | ? | ? | ? | Y | Y | ? | Y | ? |
Table 1
Upper table 1 means the exclusive message example between each current direction of crossroad, each alphabetical implication is: E(east), S(south), the W(west), N(north), " E-> W " mean from the east orientation west to, in form, alphabetical Y means that corresponding both direction can pass through simultaneously; Do not consider temporarily in this example the situation to right travel.
When first use car flow information is carried out traffic lights control, at first need each current direction mutex relation of crossing, place, all directions acquiescence transit time and possible various current matching way are input in the traffic lights information bank, when a traffic lights change-over period finishes, also need the information of each the current direction in this cycle (is comprised to current direction, the target passing vehicle number, the transit time of setting, complete the transit time of the actual use of target or the interior actual current vehicle number of transit time of setting etc.) as historical traffic lights information, deposit in the traffic lights information bank.
Vehicle fleet size on each wagon flow direction of the crossing that traffic lights control module 302 is obtained according to car flow information acquisition module 301 and each wagon flow direction, search historical traffic lights information from the traffic lights database, therefrom obtain historical record under equal conditions, such as the actual transit time of same vehicle quantity on identical wagon flow direction is the historical vehicle pass-through time, and each historical vehicle pass-through time is averaged to be made as under this condition completes current required best transit time when vehicle in front.If recorded the current best transit time of each historical vehicle pass-through time under equal conditions in the traffic lights database, without calculating, directly obtain this current best transit time.
If carry out first traffic lights control or do not exist the historical vehicle pass-through corresponding with vehicle fleet size on current same direction during the time in the traffic lights information bank, get the acquiescence transit time and complete current required best transit time as the current the party vehicle that makes progress.
Obtain all directions after the current time needed, according to the mutex relation between each current direction, calculate the shortest a kind of current matching way of interim T.T. of this week by the method for exhaustion, for example: if " E-> W " need 50 seconds, " W-> E " need 30 seconds, " E-> S " need 40 seconds, select " E-> W " with " E-> S " simultaneously current, set the transit time of each current direction simultaneously, for example, when " E-> W " and " E-> S " are simultaneously current, the setting transit time is both required time the greater, " E-> W " the 50 seconds needed time that is about to is as both direction current common setting transit time simultaneously.
Then, according to all setting transit times, and utilize the exhaustive computations method to calculate current matching way the shortest when total in all default current matching ways, as current current matching way; And using that each sets transit time and current current matching way is controlled traffic lights as the traffic lights parameter.
After this cycle is controlled end, also need the information of each current direction in this cycle is deposited in the traffic lights information bank.Using the reference frame of the traffic lights parameter being controlled as next time, iteration progressively thus, make each traffic lights change-over period at crossing, place that a suitable current scheme all can be provided, reduce the vehicle average latency, the Optimal Control that realization is current to crossing, reach the adaptive effect of intelligent traffic light, thereby utilized more fully path resource.
As shown in Figure 4, traffic lights control module 302 comprises: acquiring unit 3021, setup unit 3022, computing unit 3023, control module 3024 and memory module 3025, wherein:
Acquiring unit 3021, for obtaining from the traffic lights information bank the historical vehicle pass-through time corresponding with vehicle fleet size current same direction, average as the current the party vehicle line time all that makes progress;
In the traffic lights information bank, do not exist the historical vehicle pass-through corresponding with vehicle fleet size on current same direction during the time, get the acquiescence transit time and make progress the vehicle pass-through time as current the party.
Choose the setting transit time of transit time the longest in the transit time of vehicle of not mutual exclusion as the vehicle of described not mutual exclusion.
The embodiment of the present invention realizes the adaptive method of traffic lights and device, by the mutex relation by each current direction of crossing, all directions acquiescence transit time and all default current matching way that calculates according to mutex relation, deposit in the traffic lights information bank, on the basis that obtains crossing, place different directions real-time traffic flow amount information, historical current data under same condition are calculated, obtained the current Best Times in crossing; And by the mode of iteration progressively, make each traffic lights change-over period of crossing, place that a suitable current scheme all can be provided, reduced the vehicle average latency, realized the Optimal Control current to crossing, thereby utilized more fully path resource, reached the adaptive effect of intelligent traffic light.
The foregoing is only the preferred embodiments of the present invention; not thereby limit the scope of the claims of the present invention; every equivalent structure or flow process conversion that utilizes instructions of the present invention and accompanying drawing content to do; or directly or indirectly be used in other relevant technical field, all in like manner be included in scope of patent protection of the present invention.
Claims (6)
1. realize the adaptive method of traffic lights for one kind, it is characterized in that, comprising:
Take in real time the car flow information of obtaining in all directions preset range of crossing; Described car flow information comprises wagon flow quantity and wagon flow direction;
According to car flow information, be stored in historical traffic lights information in the traffic lights information bank and default current matching way, at traffic lights, in the change-over period, traffic lights are controlled;
Wherein, described according to car flow information, be stored in historical traffic lights information in the traffic lights information bank and default current matching way, the step of in the change-over period, traffic lights being controlled at traffic lights comprises:
Obtain the historical vehicle pass-through time corresponding with vehicle fleet size on current same direction from the traffic lights information bank, average and make progress the vehicle pass-through time as current the party;
According to the vehicle pass-through time on all directions and the mutex relation of each current direction, it is the set vehicle transit time of not mutual exclusion;
Set transit time according to each, utilize the exhaustive computations method to calculate current matching way the shortest when total in all default current matching ways, as current current matching way;
Respectively set transit time and current current matching way is controlled traffic lights with described;
Wherein, described according to the vehicle pass-through time on all directions and the mutex relation of each current direction, for the step of the set vehicle transit time of not mutual exclusion comprises:
Choose the setting transit time of transit time the longest in the transit time of vehicle of not mutual exclusion as the vehicle of described not mutual exclusion.
2. method according to claim 1, it is characterized in that, described according to car flow information, be stored in historical traffic lights information in the traffic lights information bank and default current matching way, the step of in the change-over period, traffic lights being controlled at traffic lights also comprises:
In the traffic lights information bank, do not exist the historical vehicle pass-through corresponding with vehicle fleet size on current same direction during the time, get the acquiescence transit time and make progress the vehicle pass-through time as current the party.
3. method according to claim 1, is characterized in that, after the described step of traffic lights being controlled with setting transit time and current current matching way, also comprises:
By current traffic lights in the change-over period information of each current direction deposit in the traffic lights information bank.
4. realize the adaptive device of traffic lights for one kind, it is characterized in that, comprising:
The car flow information acquisition module, for taking and obtain the car flow information in all directions preset range of crossing in real time; Described car flow information comprises wagon flow quantity and wagon flow direction;
The traffic lights control module, for according to car flow information, the historical traffic lights information that is stored in the traffic lights information bank and default current matching way, controlled traffic lights in the change-over period at traffic lights;
Wherein, described traffic lights control module comprises:
Acquiring unit, for obtain the historical vehicle pass-through time corresponding with vehicle fleet size current same direction from the traffic lights information bank, average and make progress the vehicle pass-through time as current the party;
Setup unit, according to the vehicle pass-through time on all directions and the mutex relation of each current direction, is the set vehicle transit time of not mutual exclusion;
Computing unit for setting transit time, utilizes the exhaustive computations method to calculate current matching way the shortest when total in all default current matching ways, as current current matching way according to each;
Control module, for respectively setting transit time and current current matching way is controlled traffic lights with described;
Wherein, described setup unit also for the transit time of the vehicle of choosing not mutual exclusion the longest transit time as the setting transit time of the vehicle of described not mutual exclusion.
5. device according to claim 4, it is characterized in that, described acquiring unit, also for do not exist the historical vehicle pass-through corresponding with vehicle fleet size on current same direction during the time when the traffic lights information bank, is got the acquiescence transit time and is made progress the vehicle pass-through time as current the party.
6. according to the described device of claim 4 or 5, it is characterized in that, described device also comprises:
Memory module, for by current traffic lights in the change-over period information of each current direction deposit the traffic lights information bank in.
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CN201262784Y (en) * | 2008-09-28 | 2009-06-24 | 华南理工大学 | Detection and evaluation system for urban signal control road junction traffic status based on data characteristics |
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CN101833867A (en) * | 2010-04-22 | 2010-09-15 | 赵乎 | Traffic management system based on radio frequency identification technology and method thereof |
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JP2732609B2 (en) * | 1988-09-29 | 1998-03-30 | 旭化成工業株式会社 | Magnetoelectric conversion element |
JP3656291B2 (en) * | 1995-09-25 | 2005-06-08 | 株式会社日立製作所 | Variable marking device |
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CN1053696A (en) * | 1991-02-12 | 1991-08-07 | 天津大学系统工程研究所 | Self-learning intelligent co-ordinative controlling of urban traffic |
JP3620487B2 (en) * | 2001-09-10 | 2005-02-16 | 住友電気工業株式会社 | Intersection travel time estimation device |
CN201262784Y (en) * | 2008-09-28 | 2009-06-24 | 华南理工大学 | Detection and evaluation system for urban signal control road junction traffic status based on data characteristics |
CN101814237A (en) * | 2009-12-04 | 2010-08-25 | 四川川大智胜软件股份有限公司 | Road condition identifier based on license plate recognition technology and identification method thereof |
CN101833867A (en) * | 2010-04-22 | 2010-09-15 | 赵乎 | Traffic management system based on radio frequency identification technology and method thereof |
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CN106530766A (en) * | 2017-01-04 | 2017-03-22 | 成都四方伟业软件股份有限公司 | Traffic regulation and control system and method based on big data |
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