CN102201164A - Self-adapting quick response system for urban traffic congestion - Google Patents
Self-adapting quick response system for urban traffic congestion Download PDFInfo
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Abstract
The invention provides a self-adapting quick response system for urban traffic congestion, comprising a center system, a roadside detector, a roadside detection controller, a dynamic display board on the road and an information subsystem, wherein the center system is used for processing information which is transferred by the roadside detector and the roadside detection controller which are connected with the center system and returning results after analyzing the information; the roadside detector is used for detecting the road traffic state by utilizing a comprehensive inductor and sending detection results back to the center system as well as the adjacent roadside detector and roadside detection controller; the roadside detection controller is used for detecting and analyzing the relevant traffic flow and the congestion state of the road section or the road junction and controlling the traffic light length, a wireless shirt-distance information publishing device and the dynamic information board; the dynamic display board on the road is used for intercommunicating information with the center system and the adjacent roadside detection controller and dynamically displaying the information after being analyzed; and the information subsystem is connected with the center system and used for pertinently broadcasting traffic information to drivers through various ways. By means of the system provided by the invention, the possible congestion can be rapidly detected and controlled to ensure that the congestion is eradicated at the beginning of forming.
Description
Technical field
The present invention relates to a kind of municipal intelligent traffic system, especially relate to a kind of self-adaptation urban traffic blocking quick-reaction system.
Background technology
Enter 21st century, steady-state growth along with China's economic total volume, car owning amount increases sharply, although in road construction, city planning and means of transportation modernization aspect, government has paid a lot of effort, but traffic jam issue, the auto-pollution problem, road safety problem, traffic administration problem and relate to the vehicle crime problem and but perplexing developing China day by day.How vehicle and road are carried out the intelligent management of high-efficiency high-quality, caused the great attention of Party and government.Just at present, the automobile management system of China is also very immature, specifically has following several problem: (1) congestion in road is current Chinese city traffic first difficult problem, almost is difficult to find which city problem of not blocking up.(2) criminal activity of vehicle participation makes case-solving rate low rapidly owing to escaping.(3) vehicle is robbed stolen case and is emerged in an endless stream, and national vehicle in 2004 is stolen and robbed 87249 of cases, and 240 of average every days, directly damage to property reaches 8,000,000,000 yuans, accounts for 24% of the direct damage to property of whole criminal cases.(4) illegally operation incident remains incessant after repeated prohibition, it is very serious particularly to overlap the board phenomenon, this not only allow the quilt cover board car owner's somehow or other back " black-cooking pot " of traffic offence, hit-and-run, also influenced normal social security and traffic order, grievous injury national interests.(5) hidden danger of road safety aspect makes us startling, it is reported: 70% traffic hazard is relevant with overload, and the annual thus direct economic loss that causes reaches 3,000,000,000 yuan.In addition, fatigue driving phenomenon is very serious.(6) environmental protection vehicle not up to standard is walked crosswise everywhere, and the Beijing Olympic Games that just finished last year is just because environmental issue has been become very bad international influence for our country.These a series of problems are directly jeopardizing the peacefulness of nation's security and society, have damaged the operator's that abides by the law rights and interests, have destroyed the sustainable development of national economy.Though Party and government have dropped into huge manpower and material resources, these problems all fail to be solved effectively all the time.This mainly be because: (1) does not have enough human resources, and the chance that existing manual registration inspection is discovered and seized offender is very low.(2) even enough manpowers are arranged, because means fall behind, also can not realize the big overlapping operation of population parameter, formed the difficult situation that has the method difficulty to comply with.From world wide,,, make some advanced countries also begin actively to seek more effectively countermeasure along with generation and the new traffic and the increase of the relevant crime of vehicle of 911 incidents although the west vehicle management has formed effectively management system of a cover.Facts have proved: adopt increasingly automated, intelligentized means, realize onstream inspection, become sampling observation and be full inspection, increasing substantially identification has the ability of problem vehicle to be only the key that addresses these problems.
Summary of the invention
The objective of the invention is to overcome the deficiencies in the prior art, a kind of self-adaptation urban traffic blocking quick-reaction system is provided, it can be found out fast and contingently block up and implement quick control and eliminate at the formation initial stage blocking up.
For achieving the above object, the present invention adopts following technical scheme:
A kind of self-adaptation urban traffic blocking quick-reaction system comprises: at least one centring system: the roadside detector that links with it, the information that the transmission of roadside detection controller is returned are handled, after the analysis result passed back the roadside detector, controller is surveyed in the roadside, the wireless short-distance information delivery apparatus, dynamic display board and information subsystem on the road are to regulate the magnitude of traffic flow and distribution thereof; At least one roadside detector: utilize the integrated sensor cable device road traffic state is surveyed and with result of detection send centring system and roadside detector back to, the roadside is surveyed controller and is carried out message exchange; Controller is surveyed in the roadside: except the function that possesses described roadside detector, can also analyze the magnitude of traffic flow and congestion, and control traffic lights length, the wireless short-distance information delivery apparatus, with the multidate information board, so that the magnitude of traffic flow is controlled and dredged; Dynamic display board on the road: survey controller with centring system and adjacent roadside and exchange information, with dynamically showing after this information analysis, so that wagon flow is carried out positive guide; On the road wireless short-distance information delivery apparatus receive local roadside survey controller, survey instruction controller and centring system by the roadside of centring system specified associations, and by autoanalysis issue different multidate information and information subsystem: link to each other with centring system, by number of ways to driver's specific aim broadcasting traffic information.
Described centring system, roadside detector, roadside are surveyed on controller, the road on wireless short-distance information delivery apparatus, the road dynamically, and display board is connected by municipal net in city or wireless network with the information subsystem, be delivered to centring system so that the information of any unit all can gather, also can fix a point to be delivered to other relevant unit.
Described centring system is by forming with lower module: the safety communication module: all unit or the platform that inserts centring system authenticated, and specify each intercell communication relation and communication key; The information gathering module: mainly the transport information that each unit of connecting system is beamed back is collected storage; Traffic analysis engine: the transport information of collecting is analyzed, the control method that can select to carry out is carried out emulation and optimization.Survey on controller, the road on wireless short-distance information delivery apparatus, the road dynamically display board and information subsystem for roadside detector, roadside according to transmission control system parameter or control agent under optimum traffic control algorithm or the pattern; And system management module: mainly the operation of total system is monitored and managed.
Controller is surveyed by a kind of speed of a motor vehicle to road traffic in the following at least method, vehicle flowrate, the historical allocation proportion of vehicle flowrate in described roadside detector and roadside, features such as the identification by vehicle, vehicle acceleration and deceleration are carried out comprehensive survey and analysis-by-synthesis, and these methods include but not limited to: ground induction coil, graphical analysis, noise distribution, RFID read-write, infrared acquisition and radar detection etc.
Described crossing traffic probe unit also links with the traffic lights controller simultaneously, so that traffic lights are controlled.
On the described road wireless short-distance information delivery apparatus receive local roadside survey controller, survey instruction controller and centring system by the roadside of centring system specified associations, and by the different multidate information of autoanalysis issue.
On the described road dynamically display board receive local roadside survey controller, survey instruction controller and centring system by the roadside of centring system specified associations, and show different multidate informations by autoanalysis.
Dynamic display board is directly connected to the information subsystem of various places on the described road, directly information is passed to the dynamic display screen of information subsystem.
Described information subsystem is propagated transport information to driver and motroist targetedly by the rfid system of broadcasting, mobile phone, roadside detection system and crossing detection system.
When the vehicle that travels on the road was equipped with the RFID label, roadside detector and roadside were surveyed controller and are used rfid interrogator that vehicle is discerned.
Controller is surveyed in described roadside detector and roadside, by repeat to read the instantaneous velocity through the RFID tag computation vehicle of vehicle in equal time, calculates vehicle flowrate by the number of unit of account different RF ID label in the time.
Controller is surveyed in described roadside detector and roadside, when using rfid interrogator and camera device to carry out the traffic detection at the same time, after camera device detects vehicle, begin to read the electronic tag that is attached on the vehicle, by being read situation, vehicle location and RFID judge whether vehicle does not have the RFID label, and extract vehicle characteristics and take pictures, the time interval that the vehicle of no RFID label is shot with video-corder the visual field by turnover is calculated instantaneous velocity, by discerning the vehicle flowrate that how much calculates of vehicle.
Described centring system is surveyed residing geographic position of controller and function according to described roadside detector and roadside, to survey controller roadside detector and roadside detection controller adjacent and that have discrepancy to concern with this roadside detector and this roadside is associated, the roadside detector of upstream and downstream and roadside are surveyed controller and its result of detection can be passed to the other side mutually like this, thereby making roadside, downstream detector and roadside survey controller calculates two roadside detectors or roadside and surveys vehicle ' average velocity between the controller, and upstream flowrate flows into the ratio of this direction, and the upstream detector then can be caught the data of coming from the downstream detector calculate assignment of traffic and jam situation.
The roadside detector of upstream and roadside are surveyed the roadside detector of controller by the own data of surveying and downstream and roadside and are surveyed the vehicle shunting that the data computation that transmits on the controller goes out by this each highway section, upstream and reach the average velocity of respectively shunting to the situation in each highway section, downstream, judge the jam situation of each highway section, this upstream to each highway section, downstream by the relation of speed and flow.
When described crossing traffic detection controller judges that blocking up of highway section, downstream generation reaches predetermined level, then begin the wagon flow that reduces to put into this direction to the highway section direction clearance green light that blocks up by shortening, the green light shortening time is this place to the function of the historical flow proportional of the direction of blocking up and the order of severity of blocking up surveyed.
When described roadside detector and roadside are surveyed controller and found to block up, can pass this information back centring system, and simultaneously information transmission be given on the local road that links with it dynamically display board.
The traffic lights length of controller according to time and control law dynamic adjustments crossroad is surveyed in described roadside detector and roadside, so that vehicle blocks by nothing or makes the current top efficiency that reaches in crossing.
In case on certain direction owing to block up and current limliting, then because current limliting can cause this highway section, upstream, place that fluctuations in discharge takes place, deteriorate into flow as pump discharge less than vehicle, then can get congestion in these highway sections, survey controller judgement downstream road section obstruction and carry out second level current limliting thereby can cause its roadside, upstream over time, form third and fourth grade of current limliting by that analogy.
Controller is surveyed in described roadside detector and roadside, can only be placed in crossing, part highway section, as long as by calculating the average velocity and the assignment of traffic that can obtain each highway section.
Block up when any one and to cause more than 3 or 4 grades of whens control, then judging blocks up spreads to big zone, spread for controlling the more large tracts of land of blocking up as early as possible, this zone vehicle is carried out charge or charge improves, the quantity that enters this zone vehicle with control to entering in real time in system.
The present invention is by real-time detection road block situation, in time vehicle is controlled and dredged to the traffic lights length of dynamic adjustments crossroad, traffic jam information is from the close-by examples to those far off sent gradually, thereby reach making full use of of road, the quick control of will blocking up is also eliminated at the formation initial stage blocking up.
Below in conjunction with accompanying drawing the embodiment and advantages of the present invention are further explained.
Description of drawings
Accompanying drawing 1 shows data processing network of the present invention;
Accompanying drawing 2 demonstrations municipal intelligent traffic of the present invention system;
Accompanying drawing 3 is another synoptic diagram of municipal intelligent traffic of the present invention system;
Accompanying drawing 4 shows the principle of work of traffic congestion quick-reaction system of the present invention;
Accompanying drawing 5 is structured flowcharts of traffic congestion quick-reaction system of the present invention;
Accompanying drawing 6 is structured flowcharts of centring system of the present invention;
Accompanying drawing 7 is another structured flowcharts of traffic congestion quick-reaction system of the present invention;
Accompanying drawing 8 shows junction detector of the present invention and roadside detector operation situation;
Accompanying drawing 9 shows one embodiment of the invention;
Accompanying drawing 10 shows the parameters relationship of adjacent intersection;
Accompanying drawing 11a and accompanying drawing 11b show the traffic of crossroad;
Accompanying drawing 12a and accompanying drawing 12b show that the vehicle in a traffic highway section passes through situation.
Embodiment
The present invention is based on the ingredient of RFID electronic license plate intelligent transportation system, and the electronic license plate intelligent transportation system mainly is made up of hardware system and software systems two parts.Hardware system comprises electronic license plate, roadside detector, hand-held monitoring terminal, carborne detector, and centring system.
Electronic license plate is divided into the metal electron car plate and window pastes electronic license plate.Band RFID chip in the electronic license plate, divide three zones in the chip: first district is read-only unique coding, just is provided with when chip dispatches from the factory, anyone can not revise; The content of second district for writing and locking, this district's content is write and is locked by electronic license plate granting center, can write down the fix information relevant with vehicle: VIN, license plate number, the date of production, vehicle model and label; The 3rd zone is the writable area territory, can put down in writing multinomial information: owner information, vehicles taxes record, vehicle exhaust and annual test record.Electronic license plate has function of keeping secret, and those without authority can not read the car plate content.The electronic vehicle license plate system that is provided to concrete vehicle is made up of two parts: a. is based on the transfinite high capacity chip integrated card of RFID technology of state-of-the art isomorphism, in the function of the driving license of vehicle, vehicle maintenance registration card, vehicle gate inhibition visa card and RFID chip that information encryption is integrated in electronic license plate, so just realized the unification of the information platform carrier of each management system; B. active extender carries out remote and high-speed integrated card function expansion at vehicle actual motion environment in auditing system, gate control system, the security system.
The roadside detector is made up of electronic license plate read write line, controller, video camera and corresponding communication system, can satisfy under the various environment information of electronic license plate is carried out at a distance, read accurately at a high speed.Picture pick-up device can be handled according to the instruction extracting photo of centring system and to image and discern the vehicle that can not read electronic license plate.The data of roadside detector collection insert central control system by the diverse network interface or adjacent intersection roadside supervisory system is handled.Roadside detector and centring system be connected the data security of guaranteeing equipment by the authentication that carries and ciphering process.
The roadside detector can hang on the boom of roadside, and volume is small and exquisite as A5 paper.The communication system that links to each other with the roadside detector then can be decided according to local circuit situation, both can directly be connected with roadside communications optical cable or urban network, also can adopt wireless communication mode, is sent to nearby the machine room best friend's breath processing enter of communicating by letter of confluxing.
Sub-car plate read write line of hand-held monitoring terminal current collection and wireless communication module are in one.The handhold read-write device is carried by the law enfrocement official, is used to confirm the true and false of suspected vehicles electronic identity.The law enfrocement official can read electronic license plate information and can be connected with central control system by wireless connections and transfer relevant information and the electronic license plate information that reads is mail to centring system.If decision for punishment is arranged, also can pass central server back and handle by terminal.
Carborne detector also is mobile recognition detector, has possessed all functions of roadside detector, is connected with centring system by wireless network.Carborne detector is installed in the law enforcement of flowing on the law enforcement car, with identification automatically that the legitimacy of exercising vehicle is not stopped, also can and steal vehicle and carry out mobile monitoring car violating the regulations.Carborne detector also can be used as interim traffic sensing point and layouts in the needs highway section.
Each module of centring system is by wired, wireless data transfer mode and data center's computer Data transmission.The computer of data center links with the user after encrypting through inside on the internet.The operation that the user can be correlated with to the system of oneself by the password of authorizing.Whole data handling procedure has guaranteed safety of data transmission and reliability through the PKI cryptographic means.
Referring to Fig. 1, sensing point comprises fixedly sensing point and the main mobile sensing point of being made up of hand-held monitoring terminal or carborne detector mainly be made up of roadside detector and roadside detection controller and forms.The data that each sensing point obtains are by after the central data processing unit processes, can be by uses such as enforcement vehicle, intelligent transportation system, penalty note processing enters, also can further be used by other system, total system network structure as shown in Figure 2 uses comprising trust center, the center of dealing out the cards, vehicle detection center, toll collection applications, logistical applications, law enforcement and intelligent transportation of the present invention is used, and shown in Figure 3 is that the total system logical diagram is comprising expressway tol lcollection and other Fare Collection Systems, municipal intelligent traffic system and enforcement system etc.The present invention mainly elaborates the application of above-mentioned electronic system aspect the traffic jam rapid reaction.
Principle is, after the nearest sensing point of accident point detects this highway section generation traffic jam (flow and velocity variations), just block information is sent to vehicle is arranged and enter the roadside detector that the intersection in highway section is stopped up in generation, the time scale of the traffic lights at this crossing is adjusted so that all directions enter the vehicle flowrate summation that the obstruction highway section takes place by this roadside detector and reached balance with the vehicle flowrate in obstruction highway section; And, if detecting road (the secondary current limliting road) vehicle flowrate that enters generation obstruction highway section surpasses when allowing to enter the vehicle flowrate that the obstruction highway section takes place, stop up for avoiding on these secondary current limliting roads, also forming, then the roadside detector of secondary current limliting road also sends to block information and has vehicle to enter the roadside detector of the intersection of secondary current limliting road, the time scale of the traffic lights at those crossings is adjusted so that all directions enter the vehicle flowrate summation of secondary current limliting road and the vehicle flowrate of secondary current limliting road is reached balance by this roadside detector.By that analogy, the traffic jam of accident point is shed by a ripple one wavelength-division apace.
Fig. 4 is the synoptic diagram of above-mentioned principle.In when, near the city center traffic jam taking place, at first road conditions are controlled from the F1 point that accident point is nearest, and the accident point block information is sent to F2, F3 and the G1 that is adjacent, and the F4 of outer one deck, F5, G2, G3 and G1, and the like, one wavelength-division of traffic jam one ripple is loose, until elimination.
With reference to figure 5.Comprise centring system 10 according to self-adaptation urban traffic blocking quick-reaction system 100 of the present invention; Roadside detector 14: utilize the integrated sensor cable device road traffic state to be surveyed and sent result of detection back to centring system 10 and adjacent roadside and survey controller 12; Controller 12 is surveyed in the roadside: except the function that possesses described roadside detector 14, can also analyze the magnitude of traffic flow and congestion, after the analysis, if judgement has the generation of obstruction then passes analysis result back centring system 10, and the length of change traffic lights 17, carry out local information issue by dynamic display board 16 on wireless short-distance information delivery apparatus 15, the road simultaneously, centring system 10 is then issued this block information by information subsystem 18 wide areas, so that the magnitude of traffic flow is controlled and dredged; Dynamic display board 16 on wireless short-distance information delivery apparatus 15 and the road: survey controller 12 with centring system 10 and adjacent roadside and exchange information, with dynamically sending after this information analysis and showing, so that wagon flow is carried out positive guide; Information subsystem 18: link to each other with centring system 10, by number of ways to driver's specific aim broadcasting traffic information.
The roadside that described roadside detection controller 12 is adjacent is surveyed controller and is linked to each other, for example controller 22,32 and 42 is surveyed in the roadside that is positioned at detection controller 12 downstreams, roadside shown in Fig. 5, described roadside is surveyed controller 22 and is connected with dynamic display board 26 and wireless short-distance information delivery apparatus 25 on traffic lights 27, the road, described roadside is surveyed controller 32 and is connected with traffic lights 37, and described roadside is surveyed controller 42 and is connected with dynamic display board 46 and wireless short-distance information delivery apparatus 45 on traffic lights 47, the road.
Continuation is with reference to figure 5.Dynamic display board 16 can be connected by city municipal administration net or wireless network with information subsystem 18 on described centring system 10, roadside detector 14, roadside detection controller 12, wireless short-distance information delivery apparatus 15, the road, the information of any like this unit all can gather and is delivered to centring system 10, also can fix a point to be delivered to other relevant unit.
Continuation is with reference to figure 5.Described roadside detector 14 is surveyed controller 12 by a kind of speed of a motor vehicle to road traffic in the following at least method, vehicle flowrate, the historical allocation proportion of vehicle flowrate with the roadside, features such as the identification by vehicle, vehicle acceleration and deceleration are carried out comprehensive survey and analysis-by-synthesis, and these methods include but not limited to: ground induction coil, graphical analysis, noise distribution, RFID read-write, infrared acquisition and radar detection etc.When described roadside detector 14 uses rfid interrogator and camera device to carry out the traffic detection with roadside detection controller 12 at the same time, camera device and rfid interrogator are worked simultaneously and are caught vehicle and read the electronic tag that is attached on the vehicle, by being read situation, vehicle location and RFID judge whether vehicle does not have the RFID label, and extract vehicle characteristics and take pictures, the time interval that the vehicle of no RFID label is shot with video-corder the visual field by turnover is calculated instantaneous velocity, by the vehicle flowrate that how much calculates of identification vehicle; To the vehicle of RFID label is housed, roadside detector 14 is surveyed controller 12 with the roadside and is used rfid interrogator that vehicle is discerned, at this moment, controller 12 is surveyed by repeat to read the instantaneous velocity that calculates vehicle through the number of times of the RFID label of vehicle in equal time in roadside detector 14 and roadside, calculates vehicle flowrate by the number of unit of account different RF ID label in the time.
Refer again to Fig. 5.On the described road dynamically display board 16 can receive local roadside survey controller 12, survey instruction controller 12 and centring system 10 by the roadside of centring system specified associations, and show different multidate informations by autoanalysis.Dynamically display board 16 can dynamically be drawn out the flow motor on road surface and the road surface of stopping up take place and selectable other path is provided on the road of busy and relevant crossing setting.
Again with reference to figure 5.Described information subsystem 18 can be propagated transport information to driver and motroist targetedly by the rfid system and the wireless short-distance information delivery apparatus of broadcasting, roadside detection system, crossing detection system.Described information subsystem 18 can also be realized the transport information positive guide by electronic navigation instrument in SMS or the car.Vehicle near the highway section of traffic hazard takes place, and navigating instrument all can be received relevant information in its car, and the guiding driver takes a devious route.
Continuation is with reference to figure 5.Described roadside is surveyed controller 12 roadside detector 14 adjacent with self and that have discrepancy to concern is associated, the roadside of upstream and downstream is surveyed controller 12,22,32 and 42 and its result of detection can be passed to the other side mutually like this, thereby make roadside, downstream detector 14 calculate two roadsides and survey the vehicle ' average velocity between the controller, the ratio that upstream flowrate flows into this direction, the upstream detector then can be caught the data of coming from downstream detector 22,32 or 42 and calculate assignment of traffic and jam situation.The data that transmit on the roadside detection controller 22,32 or 42 of controller 12 by own data of surveying and downstream are surveyed in the roadside of upstream can calculate vehicle shunting by this each highway section, upstream to the situation in each highway section, downstream, and the average velocity of each shunting, can judge the jam situation of each highway section, this upstream by the relation of speed and flow to each highway section, downstream.
Continuation is with reference to figure 5.When roadside, described downstream detection controller 22,32 or 42 judges that blocking up of highway sections, downstream generation reaches predetermined level, then begin by shortening the wagon flow that the green time of letting pass to the highway section direction of blocking up reduces to put into this direction, the green light shortening time is the function of this place to the historical flow proportional of the direction of blocking up and the order of severity of being surveyed of blocking up.And, when described roadside detection controller 12 is found to block up, also this information can be passed back centring system 10, and survey controller simultaneously information transmission for the roadside link with it and display board 16 and short-distance radio emitter 20 give out information by being attached thereto on the road that connects dynamically.Controller 12 is surveyed in described roadside, generally speaking, can reach top efficiency so that vehicle blocks by nothing or passed through in the crossing according to the traffic lights length of time and control law dynamic adjustments crossroad.In case on certain direction owing to block up and current limliting, then because current limliting can cause this highway section, upstream, place that fluctuations in discharge takes place, deteriorate into flow as the current limliting amount less than actual vehicle, then can get congestion in these highway sections, survey controller judgement downstream road section obstruction and carry out second level current limliting thereby can cause its roadside, downstream over time, form third and fourth grade of current limliting by that analogy.Controller 12 is surveyed in described roadside can be had and be placed in each crossing, highway section tactfully, although do not have all crossings are put, by calculating the average velocity and the assignment of traffic that can obtain each highway section.
With reference to figure 6.Described centring system 10 is by forming with lower module: safety communication module 102: all unit or the platform that inserts centring system authenticated, and specify each intercell communication relation and communication key; Information gathering module 104: mainly the transport information that each unit of connecting system is beamed back is collected storage; Traffic analysis engine 106: the transport information of collecting is analyzed, the control method that can select to carry out is carried out emulation and optimization.Survey dynamic display board and information subsystem on controller, the road for roadside detector, roadside according to transmission control system parameter or control agent under optimum traffic control algorithm or the pattern; System management module 108: mainly the operation of total system is monitored and managed.
With reference to figure 7.Described roadside is surveyed controller 12 and is controlled by 19 pairs of traffic lights of traffic lights controller.
With reference to figure 8.Controller 12 is surveyed in described roadside and roadside detector 14 is provided with three at each crossing, or on a roadside detection controller 12 and roadside detector 14, three probes are set, these three detector/probes are used for monitoring the wagon flow of craspedodrome, the wagon flow of left lateral and the wagon flow of right lateral respectively, main parameter of collecting has car density D, vehicle flowrate F, bicycle speed S, bicycle residence time T1, range of driving time T 2, two workshop interval T3, reads distance L, time for reading T4, car count M, and preset time T 5.
If road traffic is in the forming process of blocking up, then the outflow flow in roadside detection controller 12 residing highway sections is the F in this highway section as can be known
L, F
ROr F
SBecause the statistics according to each crossing can be known, flow F and left flow F
LWith right flow F
RCertain proportionate relationship is all arranged, in this application, defines this proportionate relationship and be " historical allocation proportion ":
And F
LThe historical allocation proportion of=F* left lateral, F
RThe historical allocation proportion of=F* right lateral,
F=F
L+ F
R+ F
S, therefore,
Survey vehicle flowrate F and the historical allocation proportion that controller is added up according to the roadside, can know the outflow flow in this highway section.Basis again
As can be known, survey under the situation that the outflow flow in controller 12 residing highway sections limited by centring system 10, in the roadside according to flowing out the flow saturation degree:
The coefficient that blocks up that enters with next node:
As can be known, by adjusting the bright time of left-hand rotation green light bright time, right-hand rotation green light bright time, craspedodrome green light and the length in each traffic lights cycle, aforesaid equation (a) two ends are equated, thereby can control the bright time of each traffic lights that controller 22,32 and 42 are surveyed in the roadside.
Equally, be positioned on the updrift side if controller 22,32 and 42 is surveyed in the roadside, road traffic is in the evacuation process, and then the inflow flow of one-level controller 12 must be made of FL, FR or the FS of roadside detector 22,32 and 42 as can be known.The brightness Time Calculation and the aforementioned process of concrete traffic lights are similar, and the personnel of art technology can understand fully, not repeat them here.
Fig. 9 shows an example.Suppose that Dec 1,15:02 divided the generation traffic hazard at the A place, this highway section is detected by roadside detector F11 and F21, under the normal condition, there are 70 through the equipment vehicle of F11 in 3 minutes, after two minutes, have 15-20 to be detected by equipment F21, but this moment, have only 1 car to be detected by equipment F2, can judge that traffic jam takes place highway section F1-F2 this moment, system centre shows that at once there is unusual condition this position.
Should there be the comparison of speed and flow and real speed and flow can determine the traffic jam highway section fast by each highway section.
Need to prove that the foregoing description all traffic hazard takes place as prerequisite with the somewhere, but because the reason of traffic jam also may be that the somewhere vehicle flowrate is excessive, Vehicle Speed is slow, the deficiency of time that green light is bright so that the vehicle of heaping once walk clearly.In such cases, system need detect the speed of a motor vehicle.According to V=S/T, can obtain wanting the speed of measured vehicle.If the average speed value that records represents then that much smaller than ratings this point stops up.
In addition, in fact described centring system 10 connects a plurality of detection controllers, at this moment, surveys the interior vehicle fleet size through the crossing of controller record certain hour, i.e. vehicle flowrate F, and the vehicle flowrate F that this section period is interior and interior default vehicle flowrate F of this section period
pRelatively.This surveys controller F21 can as traffic jam information, be uploaded to two class survey controller F11 with the information after information that obtains own and the processing, F12, and F13 and centring system, centring system show that at once there is unusual condition this position.
In addition, only mention that above controller is surveyed in the roadside and the roadside detector can be measured vehicle flowrate, the speed of a motor vehicle, but in fact, these detectors can also be set to and calculate a lot of parameters.As for the three unities, can measure its position or GPS position, with other node relation (turnover flow design value; Flow distribution), flow and traffic lights control ratio; For a highway section, can measure its length, flow, the speed of a motor vehicle, highway section car amount and standard top speed; For each crossing, can survey instantaneous velocity, flow and license plate number that all pass through.For detector, do not need all crossings all to install, as long as can know the crossing parameter according to respective formula yet, for example to Figure 10, because i1+i2+i5+i8=i3+i4+i6+i7, so, just can know remaining amount as long as measure 7 amounts in 8.
System provided by the invention not only can be applied to traffic jam rapid reaction aspect, and it also can be applied to other aspect, as the crashproof function in the crossroad of traffic safety aspect.With reference to figure 11a and Figure 11 b, two secondary figure all show the traffic of crossroad, and A, B, C, D are the traffic lights display device among the figure, and E is the RFID detecting device, 200 meters apart from the crossing.With reference to figure 11a, when the E Equipment Inspection to vehicle being arranged with greater than the speed of 80km/h process, and the traffic lights of A, C show red light at this moment, when the traffic lights of B, D are shown as green light, E equipment is controlled the demonstration of adjusting A, B, C, D traffic lights immediately, that is: be adjusted into the demonstration of the traffic lights of B, D orange or red.Because, not necessarily can stop fully in 200 meters (they being the distance of E equipment) with the speed of 80km/h from the crossing, if do not stop, vehicle is arranged again from B, D point process, then traffic hazard may take place.After RFID equipment was installed, the traffic lights that B, D are ordered were adjusted into orange or red, with the form speed of the BD section direction vehicle that slows down, avoided unpredictable traffic hazard to take place, and shown in Figure 11 b, two cars can not bump against.
To the overspeed of vehicle problem: the interval time of this automobile that the present invention can repeatedly read by the equipment on road surface, judge whether automobile exceeds the speed limit; If this automobile exceeds the speed limit, then the automobilist can receive that system sends to his short message prompt, and by online system this user is exceeded the speed limit on the net automatically and withhold, and notifies this user to site determining.If in the regular hour section, remain overspeed condition, the law enforcement centring system can be notified the road surface traffic police, and relevant information is sent to road surface traffic police's handheld device, and the traffic police tackles this automobile.Whether to stealing board car detection problem: road surface equipment reads the RFID label of each automobile, and it is verified, be fake-licensed car.If fake-licensed car, the relevant road surface traffic police of centring system notice sends to information road surface traffic police's handheld device; The traffic police tackles in respective stretch.Escape is surveyed to accident: how long centring system can be judged each automobile needs by certain highway section, if in the regular hour, do not read this automobile once more, just read every a period of time, then the photo of taking according to the road surface is checked, if be judged as escape, the relevant road surface traffic police of centring system notice then sends to road surface traffic police's handheld device to information, and the traffic police tackles in respective stretch.
System provided by the invention also not only can be applied to and prevent to block up and the crossing secure context, and it also can be applied to other aspect, as intelligent transportation---and restriction overlength parking scheme, major function is for minimizing or stop arbitrarily to stop phenomenon.With reference to figure 12a and 12b, two figure all are shown as a traffic highway section, and A, B, C, D are RFID traffic checkout equipment display device among the figure, and vehicle license plate all is equipped with the RFID chip in the diagram.With reference to figure 12a, in this traffic highway section, detected three cars through the RFID transit equipment and will pass through the C checkout equipment, still spent the time of cruising, as Figure 12 b, C equipment does not still detect corresponding three cars, perhaps only detects one or two.In such cases, C equipment will send information to this road section traffic volume center, point out this highway section traffic police to go to check reason.
For another example dangerous material vehicle and special vehicle supervision, overload of vehicle and leakage, vehicle condition, urban district charge fast passage, go into the urban district time according to vehicle registered place, type of vehicle and vehicle, and metropolitan district traffic saturation degree and automatically regulate the charge of urban vehicle automatic dynamic, road and bridge free flow charge, Public Parking non-parking charge and the location guide etc. of the rate of charge of urban district vehicle.
Also can be used for the traffic administration platform, travel as vehicle driving against traffic regulations and stop on detection, the extraordinary road.Also can be used for judging whether overload: whether the vehicle of judging the road surface by camera overloads on volume, judges by laser whether vehicle overloads on weight; Roadside equipment can carry out Treatment Analysis these information uploadings to centring system; Centring system is notified relevant road surface traffic police, information is sent to road surface traffic police's handheld device; The traffic police carries out intercept process in respective stretch.Also can be used for supervising fatigue driving: drive the time at expressway entrance and exit record teamster, surpass the legal continuous driving time, will occur reporting to the police and commander police enforces the law to it at central control system, thereby prevent fatigue driving, guarantee the safety of people's lives and properties effectively.
Handle problems to imposing a fine online law enforcement, because any illegal activities that the driver sends on the road surface all can form corresponding electronics ticket in system, the driver can receive the corresponding prompt note.Confirm fine to this website.If feel wrong, can go to propose this situation to relevant departments.By with the Bank Account Number of electronic license plate hook on corresponding stroke get, realize the vehicle that enters the urban district is carried out non-parking charge.Compulsory insurance for traffic accident of motor-drivenvehicle, environmental protection, secure context to vehicle, because any automobile on the road surface, as long as roadside equipment reads this automobile, the capital sends to centring system to data, centring system can be checked the legitimacy of this automobile, if not legal, can receive SMS notification equally, the treatment scheme of enforcing the law on the net.
At phenomenons such as some cover board crimes at present are very serious, the present invention replaces traditional used car board according to existing vehicle registration information and license plate number distribution RFID electronics car car plate, and this car plate is based on passive long distance aluminum matter RFID car plate.There is the important vehicle of specific (special) requirements can provide the RFID car plate of other forms (active or have sensing device) to some; At each big slip-road, strategic road read write line is set, passing vehicle is read at a distance; By being connected, realize the accurate management of vehicle and law enforcement fast automatically, the criminal offence of thoroughly stopping administrative vulnerability and his license plate of personation with the license plate number management system of traffic department.As for some driver character fierceness, the process center that some law enfrocement official enforces the law at the scene has phenomenon such as fears, by bank account hook with electronic license plate and car owner, on high speed roadside and important urban pavement, read write line is set, all read write lines are connected with license plate number system, driver's register system of traffic department by wired or wireless network, the vehicle that violates the traffic regulations is in the process of moving surveyed record automatically, with the direct information data processing centre (DPC) that reads, and handle according to treatment scheme.This system can also be connected with local traffic police system, strengthens law enforcement.
Certainly, more than only be concrete exemplary applications of the present invention, protection scope of the present invention is not constituted any limitation.In addition to the implementation, the present invention can also have other embodiment.All employings are equal to the technical scheme of replacement or equivalent transformation formation, all drop within the present invention's scope required for protection.
Claims (20)
1. a self-adaptation urban traffic blocking quick-reaction system comprises:
Centring system: the roadside detector that links with it, the information that the transmission of roadside detection controller is returned are handled, after the analysis result passed back the roadside detector, controller is surveyed in the roadside, dynamic display board on the road, wireless short-distance information delivery apparatus and information subsystem are to regulate the magnitude of traffic flow and distribution thereof;
Roadside detector: utilize the integrated sensor cable device road traffic state to be surveyed and sent result of detection back to centring system and adjacent detector and detection controller and carry out message exchange;
Controller is surveyed in the roadside: except the function that possesses described roadside detector, can also analyze the magnitude of traffic flow and congestion, and control traffic lights length, wireless short-distance information delivery apparatus and multidate information board are to control and to dredge the magnitude of traffic flow;
Wireless short-distance information delivery apparatus: survey controller with centring system and adjacent roadside and exchange information, give onboard wireless receiving trap in its transmitting boundary with dynamic transmission after this information analysis, so that wagon flow is carried out positive guide;
Dynamic display board on the road: survey controller with centring system and adjacent roadside and exchange information, with dynamically showing after this information analysis, so that wagon flow is carried out positive guide; And
The information subsystem: link to each other with centring system, by number of ways to driver's specific aim broadcasting traffic information.
2. self-adaptation urban traffic blocking quick-reaction system according to claim 1, it is characterized in that, dynamic display board is connected by city municipal administration net or wireless network with the information subsystem on described centring system, roadside detector, roadside detection controller, wireless short-distance information delivery apparatus, the road, be delivered to centring system so that the information of any unit can gather, also can fix a point to be delivered to other relevant unit.
3. self-adaptation urban traffic blocking quick-reaction system according to claim 1 is characterized in that described centring system is by forming with lower module:
Safety communication module: all unit or the platform that inserts centring system authenticated, and specify each intercell communication relation and communication key;
The information gathering module: mainly the transport information that each unit of connecting system is beamed back is collected storage;
Traffic analysis engine: the transport information of collecting is analyzed, and the control method that can select to carry out carried out emulation and optimization, survey on controller, wireless short-distance information delivery apparatus, the road dynamically display board and information subsystem for roadside detector, roadside according to transmission control system parameter or control agent under optimum traffic control algorithm or the pattern; And
System management module: mainly the operation of total system is monitored and managed.
4. self-adaptation urban traffic blocking quick-reaction system according to claim 1, it is characterized in that, controller is surveyed by a kind of speed of a motor vehicle to road traffic in the following at least method, vehicle flowrate, the historical allocation proportion of vehicle flowrate in described roadside detector and roadside, features such as the identification by vehicle, vehicle acceleration and deceleration are carried out comprehensive survey and analysis-by-synthesis, and these methods include but not limited to: ground induction coil, graphical analysis, noise distribution, RFID read-write, infrared acquisition and radar detection etc.
5. self-adaptation urban traffic blocking quick-reaction system according to claim 4 is characterized in that, described roadside is surveyed controller and also linked with the traffic lights controller simultaneously, so that traffic lights are controlled.
6. self-adaptation urban traffic blocking quick-reaction system according to claim 1, it is characterized in that, on the described road dynamically display board receive local roadside survey controller, survey instruction controller and centring system by the roadside of centring system specified associations, and show different multidate informations by autoanalysis.
7. self-adaptation urban traffic blocking quick-reaction system according to claim 6 is characterized in that, dynamic display board is directly connected to the information subsystem of various places on the described road, directly information is passed to the dynamic display screen of information subsystem.
8. self-adaptation urban traffic blocking quick-reaction system according to claim 1, it is characterized in that, on the described road wireless short-distance information delivery apparatus receive local roadside survey controller, survey instruction controller and centring system by the roadside of centring system specified associations, and by the different multidate information of autoanalysis issue.
9. self-adaptation urban traffic blocking quick-reaction system according to claim 1, it is characterized in that the rfid system that described information subsystem is surveyed controller by broadcasting, mobile phone, wireless short-distance information delivery apparatus, roadside detector and roadside is propagated transport information to driver and motroist targetedly.
10. according to claim 1,4,5 described self-adaptation urban traffic blocking quick-reaction systems, it is characterized in that when the vehicle that travels on the road was equipped with the RFID label, roadside detector and roadside were surveyed controller and used rfid interrogator that vehicle is discerned.
11. self-adaptation urban traffic blocking quick-reaction system according to claim 10, it is characterized in that, controller is surveyed in described roadside detector and roadside, by in equal time, repeating to read the instantaneous velocity that calculates vehicle through the number of times of the RFID label of vehicle, calculate vehicle flowrate by the number of unit of account different RF ID label in the time.
12. according to claim 1,4,5 described self-adaptation urban traffic blocking quick-reaction systems, it is characterized in that, controller is surveyed in described roadside detector and roadside, when using rfid interrogator and camera device to carry out the traffic detection at the same time, after camera device detects vehicle, begin to read the electronic tag that is attached on the vehicle, by being read situation, vehicle location and RFID judge whether vehicle does not have the RFID label, and extract vehicle characteristics and take pictures, the time interval that the vehicle of no RFID label is shot with video-corder the visual field by turnover is calculated instantaneous velocity, by the vehicle flowrate that how much calculates of identification vehicle.
13. according to claim 1,4,5 described self-adaptation urban traffic blocking quick-reaction systems, it is characterized in that, described centring system is surveyed residing geographic position of controller and function according to described roadside detector and roadside, to survey controller roadside detector and roadside detection controller adjacent and that have discrepancy to concern with this roadside detector and this roadside is associated, the roadside detector of upstream and downstream and roadside are surveyed controller and its result of detection can be passed to the other side mutually like this, thereby making roadside, downstream detector and roadside survey controller calculates two roadside detectors or roadside and surveys vehicle ' average velocity between the controller, and upstream flowrate flows into the ratio of this direction, and the upstream detector then can be caught the data of coming from the downstream detector calculate assignment of traffic and jam situation.
14. self-adaptation urban traffic blocking quick-reaction system according to claim 13, it is characterized in that, the roadside detector of upstream and roadside are surveyed the roadside detector of controller by the own data of surveying and downstream and roadside and are surveyed the vehicle shunting that the data computation that transmits on the controller goes out by this each highway section, upstream and reach the average velocity of respectively shunting to the situation in each highway section, downstream, judge the jam situation of each highway section, this upstream to each highway section, downstream by the relation of speed and flow.
15. self-adaptation urban traffic blocking quick-reaction system according to claim 14, it is characterized in that, when described crossing traffic detection controller judges that blocking up of highway section, downstream generation reaches predetermined level, then begin the wagon flow that reduces to put into this direction to the highway section direction clearance green light that blocks up by shortening, the green light shortening time is this place to the function of the historical flow proportional of the direction of blocking up and the order of severity of blocking up surveyed.
16. self-adaptation urban traffic blocking quick-reaction system according to claim 14, it is characterized in that, when described roadside detector and roadside are surveyed controller and are found to block up, can pass this information back centring system, and simultaneously information transmission is given on the local road that links with it on wireless short-distance information delivery apparatus and road dynamically display board.
17. self-adaptation urban traffic blocking quick-reaction system according to claim 16, it is characterized in that, the traffic lights length of controller according to time and control law dynamic adjustments crossroad is surveyed in described roadside detector and roadside, so that vehicle blocks by nothing or makes the current top efficiency that reaches in crossing.
18. self-adaptation urban traffic blocking quick-reaction system according to claim 14, it is characterized in that, in case on certain direction owing to block up and current limliting, then because current limliting can cause this highway section, upstream, place that fluctuations in discharge takes place, deteriorate into less than actual vehicle flowrate as the current limliting amount, then can get congestion, survey controller judgement downstream road section obstruction and carry out second level current limliting, form third and fourth grade of current limliting by that analogy thereby can cause its roadside, upstream over time in these highway sections.
19. self-adaptation urban traffic blocking quick-reaction system according to claim 1, it is characterized in that, controller is surveyed in described roadside detector and roadside, can only be placed in crossing, part highway section, as long as by calculating the average velocity and the assignment of traffic that can obtain each highway section.
20. self-adaptation urban traffic blocking quick-reaction system according to claim 18, it is characterized in that, block up when any one and to cause more than 3 or 4 grades of whens control, then judging blocks up spreads to big zone, spread for controlling the more large tracts of land of blocking up as early as possible, this zone vehicle is carried out charge or charge improves, the quantity that enters this zone vehicle with control to entering in real time in system.
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