CN102280024A - Two-dimensional control system for preventing traffic jam - Google Patents
Two-dimensional control system for preventing traffic jam Download PDFInfo
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- CN102280024A CN102280024A CN2011101208094A CN201110120809A CN102280024A CN 102280024 A CN102280024 A CN 102280024A CN 2011101208094 A CN2011101208094 A CN 2011101208094A CN 201110120809 A CN201110120809 A CN 201110120809A CN 102280024 A CN102280024 A CN 102280024A
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Abstract
The invention discloses a two-dimensional control system for preventing traffic jam. The two-dimensional control system comprise fast roads, major roads and collector roads, wherein under the conduction of traffic signal lights, a vehicle queue array is formed, column arrays are formed according to lanes, the length of each column array is a product of multiplying vehicle speed V by green time Tg, space-time breaking neutral positions are bound to exist before and behind the vehicle queue array, and the space-time breaking neutral position is a product of multiplying the vehicle speed V by red time Tr; in addition, vehicles cannot be randomly detained at the space-time breaking neutral positions, the periods T of vehicles running on the roads are identical, wherein T=Tg+Tr. The two-dimensional control system has the advantages that: vehicles cannot undergo congestion on the fast roads, the major roads and the collector roads, a smooth state is kept from the beginning to the end; although traffic lights are arranged at crossroads on all the roads, vehicles are not stopped at the crossroads, so that the traffic amount of the vehicles is increased, and fuels are saved for the vehicles; and the two-dimensional control system has very great economic benefits and social benefits for a city.
Description
Technical field
The present invention relates to the urban traffic control system field, specifically a kind of two-dimentional control system of blocking up of preventing.
Background technology
The development of emerging nation all is to be mainstay industry with the automobile now, raising along with these national living standards of the people, the sale of automobile industry is vigorous day by day, annual with bigger ratio rising, in the growth of some big and medium-sized cities automobiles growth faster than road, so the traffic congestion phenomenon has appearred in many cities, one stifled be exactly several hours, there are not what new approaches, new method and solve these traffic congestions, still continue to use the traditional cities traffic control system, use traffic signal lamp (traffic lights) on the intersection, staff vehicles operation, every operation one-period T=T
g(green time)+T
r(red time), general T
gBe T
rThree times, with red light a large amount of vehicles are got lodged on the crossroad, then with the green light vehicle of letting pass in an orderly manner.So most of vehicle will stop T by a crossroad
rTime, lose time, waste energy.
This way can also tackle when not being abundant at vehicle.General city is in rush hour, a large amount of vehicles in a short period of time, the major trunk roads of once all having crowded into form " traffic congestion ".Some city vehicle is close to saturated, often " traffic congestion ".In this case, Intelligent traffic management systems has just appearred, and where not stifled, just let pass toward the there.The result? there are too many cars, do not miss according to stifled, and problem is not effectively solved.Method that ancient times, great fish was harnessed the river that Here it is, the traffic control system of passive type.
In order to separate the never problem of traffic congestion, strengthen road construction, build ring road, build full interchange viaduct.Has fixed on the road, and unobstructed a period of time of after, the result is on ring road, and automobile stands in a long line, one connects one, between the original car certain vehicle headway is arranged, and in order to race against time, has a driver to compress following distance, everybody comes on, and blocks up into a slice, causes the whole city traffic police to set out sometimes, all goes unimpeded.According to the fluid mechanics modeling theory, if in 1 kilometer, vehicle surpasses 53, will block up.Thus, proved on the full intercommunication road and also can block up.Driving now will divide odd or even number, sells means serial of methods such as the car number of shaking and controls stifledly, and car is more stifled but things turn out contrary to one's wishes.Its as a result ring road become big parking lot, crux will be found out the reason of traffic congestion.
Because often traffic congestion, the speed of a motor vehicle is very slow, and often start-stop stops, and causes the significant wastage of the energy like this, and the pollution to environment is also very big simultaneously.
Summary of the invention
The objective of the invention is to set up the traffic control system of the active staff vehicles operation of a cover, this system is utilization " continuum mechanics " and " field theory ", the time and space stream that streaks in the vehicle operating process, be called " space-time stream ", through calculating, propose certain rule and formulate a cover vehicle motion model.Use traffic lights, initiatively staff vehicles is controlled vehicle operating.Allow vehicle form " fleet's array " on road, under the commander of green light, it is interval to enter efficient spatio-temporal stream.And flowed by the invalid space-time that red light is blocked, we are referred to as " space-time is broken to be lacked ".
The first, in " space-time is broken to be lacked " interval, must not at will be detained vehicle, otherwise, can cause " traffic congestion ".
On a certain ring road, form " traffic congestion " now
The traffic police blocks follow-up vehicle on the road junction and stops, and when the front vehicle drew back a neutral gear, the traffic police was put one group of vehicle (fleet's array) past, and its length is equivalent to a V (speed of a motor vehicle) T
g(green time) stops one section then, is equivalent to V (speed of a motor vehicle) T
r(red time) put a train team again and gone over (VT
g), and then block (VT
r), so repeated multiple times has slowly been dredged road.
If just carry out this motion model before in " traffic congestion ", " traffic congestion " can not take place just, Here it is because the neutral gear in " space-time is broken to be lacked " zone is arranged, and is not detained vehicle, moves ahead for follow-up fleet, and traffic is just unimpeded.That is to say that fleet's array of efficient spatio-temporal stream goes to fill up " space-time is broken to be lacked " space.Thereby prove that first requirement is correct.
The present invention prevents the two-dimentional control system that blocks up, on the main thoroughfare in city, comprises through street, trunk roads and secondary distributor road, under the traffic signal lamp commander, forms " fleet's array ", forms array by the track, and every array length is taken advantage of green time T for vehicle velocity V
g, " space-time is broken to be lacked " neutral gear must be arranged before and after " fleet's array ", " space-time is broken to be lacked " neutral gear is that vehicle velocity V is taken advantage of red time T
rAnd must not arbitrarily be detained vehicle in " space-time is broken to be lacked " neutral gear, its period T of the traffic signal lamp that vehicle is met that moves on road is identical, T=T
gBe green time+T
rBe red time.
" fleet's array " requires: by the track walk to turn left (L), keep straight on (Z), turn right (R) form array, press headstock between vehicle apart from t
0(about 1.5s-2s) forms the train number array, and array length equals vehicle velocity V and takes advantage of green time T
g, be expressed as
φ---empty wagons position
L, Z, R---vehicle operating direction is designated as train number down
The cycle of traffic signal lamp is T, T=T
g(green time)+T
r(red time).The space that vehicle streaks in green time is efficient spatio-temporal stream (VT
g), at red time T
rIn, be the space-time stream (VT of loss
r), be referred to as " space-time is broken to be lacked ".
The necessary condition that forms " fleet's array " is, before and after the every train team array, " space-time is broken a to be lacked " neutral gear must be arranged, and must not arbitrarily be detained vehicle in this neutral gear, is expressed as
This is necessity and the adequate condition that forms smooth traffic project, and " space-time is broken to be lacked " has been arranged, and guarantees that " fleet's array " is unimpeded in the main line direction; " space-time is broken to be lacked " is arranged, also guaranteed that laterally " fleet's array " passes through simultaneously fully, and can not form " traffic congestion ".
On same the road or intersect on the two road, the signal light period T all should be identical.
T＝T
g+T
r (3)
T
gWith T
rRatio can change, also can be at T
gIn transitional amber light Te is set.
T＝(T
g+Te)+T
r (4)
On two cross channel, though the speed of a motor vehicle is different, (for example quick 80km/h, major trunk roads 60km/h, subsidiary road 40km/h), and the cycle should be identical, and on a road, distance is about 500m between two signal lamps, and the cycle is T
1And T
2, T
1=T
2, but two period T
1And T
2Mistiming be:
t
1, t
2Represent 2 moment, l
2, l
1Represent the length of crossroad.(5)
D=l
2-l
1_ _ _ _ _ _ _ _ _ _ _ twos' distance
Vehicle is in the less parking of main line direction, during changing Lane, should wait for a red light T but vehicle turns round
r(1/3----2/3), but be no more than a T
r, this model has been saved the energy greatly, has saved the time, has improved the vehicle flowrate on speedway, city, trunk roads and the secondary distributor road.
Second, the two-dimentional control system of prevention traffic congestion, on through street, trunk roads and secondary distributor road, carry out " two logical standards ", described " two logical standard " promptly in one-period signal light the variation of twice traffic lights takes place and the driving pattern formulated, being directed traffic by signal light forms compartment fleet array on the road and space-time is broken lacks, and guarantees that vehicle is smooth the way on through street or the trunk roads.On the cross channel that forms in twos between through street, trunk roads and the secondary distributor road, the signal light on keeping former four crossway, eight traffic signal lamps have been reset, as shown in Figure 1, guarantee vehicle in the regional inner conversion track of appointment, behind the crossing, vehicle rearranges, form new fleet's array, thereby guaranteed that fleet's array of compartment and broken scarce continuation of space-time move ahead in the main line direction.
Newly-installed eight signal lights are provided with: on the road before entering the intersection, step back a VT in the following manner
gGreen light is apart from a signal light, totally four lamps are set; Behind the crossroad, enter on the way forward two green lights apart from 2VT
gThe place is provided with a signal light, and totally four lamps delimited the Accreditation Waiting Area of requeuing.These eight lamps can be according to actual conditions, and are fine-tuning, but want assurance function constant.
Go up at the parting of the ways, original signal light keeps, eight signal lights have been increased again, the crossroad is formed one " big mill " automatically, and the operation that vehicle does not stop in this mill guarantees four less parkings of main line direction, vehicle turns round in the appointed area and changing Lane, under center traffic police's supervision, after the formation " fleet's array ", or else allow changing Lane.
" two logical standards " requires as follows:
(1) speed of a motor vehicle is by the requirement of " Code for planning design of transport on urban road " [GB50220-95]
Through street V=80km/h, trunk roads V=60km/h, secondary distributor road V=40km/h
(2) all lamp control cycles are identical on speedway, trunk roads and the secondary distributor road network, T
1=T
2
Line traffic control two lamps can be established according to the crossing actual conditions apart from about 500m, but it is above and do not establish signal light to surpass 500m, and the two mistiming is
Eight signal lights are newly established in the crossroad, as shown in Figure 1, the intersection are divided into vehicle changing Lane district and the Accreditation Waiting Area of requeuing, and this is traffic strict control district.Adjacent two crossroad mistiming Δ t need fine setting sometimes, the appropriate change speed of a motor vehicle or increase down time at less important road junction.
(3) or else vehicle must allow conversion car district in inner conversion track, appointed area after rearranging the Accreditation Waiting Area, and by claim 1,2 carry out " fleet's array ".
(4) since above the having a lot of social connections all of secondary distributor road above 40m turn left by array craspedodrome (Z) earlier, turn around then (T), turn right (R) finishes again, promptly
L＝R*T*Z (6)
L, R, T, Z turns right for turning left, and turns around the craspedodrome operator.
Carry out " two logical standards ", guarantee the less parking of main line direction, vehicle generally has 4 to 6 tracks on the major trunk roads, the speed of a motor vehicle is the 60km/h operation, Zhi Ganlu generally has 3 to 4 tracks, and the speed of a motor vehicle is pressed the 40km/h operation, per hour can reach the vehicle flowrate of ten thousand/hour of Q=1.6 on this crossroad at most.
The 3rd, the two-dimentional control system of prevention traffic congestion must be carried out " access system " to entering through street, trunk roads and secondary distributor road vehicle, and described " access system " is " fleet's array " when the place ahead operation when free parking stall is arranged, and can add " fleet's array " and move; Otherwise, wait for next column fleet.As at the starting station, should command by traffic signal lamp, form the broken missing plot of fleet's array and space-time, in fleet's array of the vehicle of operation,, let pass by the quantity in room if when having vacant position, can not leave at a brood of peak.In order to prevent " traffic congestion ", find out the source that vehicle flows out, control source discharge is carried out " vehicle access system " on request.
General vehicle when normal circulation, its speed of a motor vehicle
Divergence
Be zero, promptly
Press the fluid mechanics modeling theory, the continuity equation when vehicle flowrate is uneven is
The e vehicle density is when vehicle density rate of change in time
When non-vanishing, be exactly rise place or convergence place of vehicle, harbour AT STATION just, large-scale party end of a performance and parking lot and place, garage.When a large amount of vehicles at place, car source are crowded into major trunk roads, must block up, for this reason, require to carry out " vehicle access system ", vehicle must form " fleet's array ", or the empty wagons position in the laager row is sailed in participation the place ahead.
" vehicle access system " is made up of three parts:
(1), the traffic signal lamp (T of access system inlet
gAnd T
r) control, signal is by vehicle velocity V, and headstock passes through time, the array matrix figure of fleet (the empty wagons position is the access number) apart from Z (train number)
(2), access system vehicle Accreditation Waiting Area, former parking lot or defined area.
(3), by the total machine room control of Traffic Administration Bureau, the enforcement of total activation access system.Comprise the power of approval that enters C district, inner city access system.
The 4th, the city microcirculqtory system must be carried out " four-way standard ".The variation of No. four traffic lights takes place and the driving pattern formulated in " four-way standard " in one-period, the same with " two logical standards " as shown in Figure 4, and eight signal light staff vehicles changing Lanes newly are set, and forms into columns formation fleet array in the appointed area again.
The characteristics of " four-way standard " and " two logical standard " are to have gone up phenomenon that red lights such as again can not see a large amount of vehicles wastes energy at the parting of the ways, vehicle is to block by nothing in the main line direction, less parking, changing Lane just suspends (1/3----2/3) time of red light when only having turning, this system helps saving reduction of discharging, the position of suspending is the dead ahead at the parting of the ways, waits for that fleet's array one tunnel of main line direction moves ahead." four-way standard " and " two logical standards " cycle can equate, also can become integral multiple.T
4=T
2Or T
4=2T
2" two logical standards " and the linking route of " four-way standard " they are secondary distributor road, adjustable car load speed, and by (5) formula, the mistiming Δ t between the adjustment cycle docks.
Vehicle moves in the city, is generally in half an hour to 1 hour, and you can look for two straight line movings, at most change to bend for twice and just can arrive the destination fast, the circular flow in the city except public transport and taxi, a large amount of vehicles just rolled off the production line in half an hour, as long as manage, mustn't break rules and regulations, arbitrarily changing Lane divides the time zone, region-by-region, divide the city into C district, center and suburbs S district, the timesharing subregion is controlled the vehicle orderly function.Certainly also will be provided with, dedicated bus lines, public transit vehicle are only obeyed the traffic signal lamp management, do not enter " access system ".Emergency access and access system Accreditation Waiting Area also should be set and the vehicle Accreditation Waiting Area of falling behind.When branch road was communicated with trunk roads and through street, access system Accreditation Waiting Area was located on the track of turning right of branch road, waits in line on the track of turning right.
The variation of No. three traffic lights takes place and the driving pattern formulated in " threeway standard " in one-period, as shown in Figure 5, go up as shown in Figure 6 at the parting of the ways on the T-shaped road junction.In formulating the motor pattern in whole city, can intert use.
The present invention is applied in the inner city of urban transportation, the netted traffic system that ring road, trunk roads and secondary distributor road are formed on the main main line of communication is equivalent to " sustainer " of traffic system, carries out " two logical standards " model, the divergence that guarantees car speed in theory is zero, promptly
Guaranteed the steady state (SS) of vehicle flowrate, be equivalent to the river and guarantee unimpeded.
In grid, mainly the microcirculation part of the traffic system of being made up of branch road is carried out " four-way standard ", when entering through street, trunk roads and secondary distributor road, and execution " access system ".In theory, think that this part speed of a motor vehicle divergence is non-vanishing
Be the cradle or the distribution centre of vehicle, be equivalent to wetland, small reservoir is regarded as in station and parking lot, so must carry out vehicle access system.
The two-dimentional control system of prevention traffic congestion is used " space-time is broken to be lacked " theory, and main traffic network system carries out " two logical standards ", and grid inner face control microcirculqtory system is carried out " four-way standard " and vehicle " access system ".This system is practical, and some facility can be finely tuned.Native system has guaranteed the less parking of main line direction, helps energy-saving and emission-reduction.
The present invention proposes the theory of " space-time is broken to be lacked ", can be by the avenue detail drawing, calculate the maximum appearance of vehicle amount in C district and S district, in half an hour to one hour, will rotate most vehicles by statistical law, except that taxi and public transport circulate, can calculate the vehicle total amount of operation in 6 of this city mornings to 7 of evenings, so that traffic control system timesharing subregion manages in the city, external vehicle should shift to an earlier date half an hour to be declared, and lets pass after checking and approving.
The scheme of active commander's city vehicle operation that Here it is.
The present invention prevents the advantage of the two-dimentional control system that blocks up to be: on through street, trunk roads and secondary distributor road, vehicle can not form and block up, extremely whole to the beginning is unimpeded, right-angled intersection place in above highway section, though be provided with traffic lights, vehicle does not stop in right-angled intersection place, strengthened the flow of car like this, saved the fuel of vehicle simultaneously,, had very great economic benefit and social benefit for a city.
Description of drawings
Fig. 1 is two logical standard figure.
Fig. 2 is T-shaped road junction two logical standard figure.
Fig. 3 is traffic circle two logical standard figure.
Fig. 4 is four-way standard figure.
Fig. 5 is T-shaped road junction threeway standard figure.
Fig. 6 is crossroad threeway standard figure.
Fig. 7 is Wuhan City's regional traffic synoptic diagram.
Embodiment
Embodiment one
Shown in Fig. 1-6, the two-dimentional control system of prevention traffic congestion, comprise through street, trunk roads and secondary distributor road, under the traffic signal lamp commander, form " fleet's array ", form array by the track, every array length is taken advantage of green time T for vehicle velocity V, " space-time is broken to be lacked " neutral gear must be arranged before and after " fleet's array ", and " space-time is broken to be lacked " neutral gear is that vehicle velocity V is taken advantage of red time T; And must not arbitrarily be detained vehicle in " space-time is broken to be lacked " neutral gear, its period T of the vehicle that moves on road is identical, T=T green time+T red time.
Must carry out " access system " to entering through street, trunk roads and secondary distributor road vehicle,, can add " fleet's array " operation when " the fleet's array " of the place ahead operation when free parking stall is arranged; Otherwise, wait for next column fleet.
On through street and trunk roads, carry out " two logical standards ", so-called " two logical standards " twice conversion that promptly signal light produces in one-period and the driving pattern formulated, on the intersecting roads that forms in twos between through street and trunk roads and the secondary distributor road, step back a V T green light distance and apart from 2 (V T) traffic signal lamp is set by two green lights in the place ahead, crossroad, newly be provided with eight traffic signal lamps altogether, and setting vehicle changing Lane district and vehicle queue Accreditation Waiting Area, thereby guaranteed the less parking of main line direction, and guarantee must to have before and after " fleet's array " " space-time is broken to be lacked " neutral gear, allow road junction without block.
On the through street, vehicle velocity V=80Km/h, lamp be apart from by being provided with about 500m, and T=1 minute, T
g: T
r=1: 1 (also can establish 2: 1) headstock is apart from 2.2S.
The array length 650m of fleet contains 14 cars, well below the limit of blocking up of every kilometer 53 cars.
Embodiment two
As shown in Figure 7, be example with the inner city road network ABCD of urban transportation, trunk roads AB and CD, secondary distributor road BC and DA.The trunk roads speed of a motor vehicle is 60km/h, and the secondary distributor road speed of a motor vehicle is 40km/h.The cycle of supposing all traffic signal lamps is all 60s.With the B point is the center, can calculate the mistiming Δ t that the A point is ordered with respect to B according to formula (5), in like manner calculates B, C point-to-point transmission mistiming, control Xinhua Lu BC.By the C point, calculate the mistiming that the D point is ordered with respect to C again.But the mistiming of A, D point-to-point transmission not necessarily just in time integrates with, and above A point, C point, D are ordered the mistiming Δ t that is calculated, all to finely tune, and the one, change the speed of a motor vehicle, perhaps increase a small amount of down time, can guarantee that A point vehicle in original cycle normally passes through.Vehicle is carried out " two logical standards " on road network ABCD, guarantee that vehicle is unimpeded on trunk roads, secondary distributor road.
In road network ABCD, inner arm of a network, i.e. traffic microcirculation part, vehicle enters trunk roads and secondary distributor road, then need carry out " access system ".This illustration is bright, and the ubiquity of this control system can apply to the whole city traffic system.
The invention is not restricted to the foregoing description, can not form a plurality of embodiment on an equal basis according to the length of each urban traffic situation difference, road, and all fall within protection scope of the present invention.
Claims (3)
1. the two-dimentional control system of prevention traffic congestion comprises through street, trunk roads and secondary distributor road, it is characterized in that: under the traffic signal lamp commander, form " fleet's array ", form array by the track, every array length is taken advantage of green time T for vehicle velocity V
g, " space-time is broken to be lacked " neutral gear must be arranged before and after " fleet's array ", " space-time is broken to be lacked " neutral gear is that vehicle velocity V is taken advantage of red time T
rAnd must not arbitrarily be detained vehicle in " space-time is broken to be lacked " neutral gear, its period T of the vehicle that moves on road is identical, T=T
gGreen time+T
rRed time.
2. the two-dimentional control system of prevention traffic congestion according to claim 1, it is characterized in that: must carry out " access system " entering through street, trunk roads and secondary distributor road vehicle, when " the fleet's array " of the place ahead operation when free parking stall is arranged, can add " fleet's array " operation; Otherwise, wait for next column fleet.
3. the two-dimentional control system of prevention traffic congestion according to claim 1, it is characterized in that: on through street and trunk roads, carry out " two logical standards ", so-called " two logical standards " twice conversion that promptly signal light produces in one-period and the driving pattern formulated, on the intersecting roads that forms in twos between through street and trunk roads and the secondary distributor road, step back a V T
gThe green light distance and by two green lights in the place ahead, crossroad apart from 2 (V T
g) traffic signal lamp is set, newly be provided with eight traffic signal lamps altogether, and set vehicle changing Lane district and vehicle queue Accreditation Waiting Area, thereby guaranteed the less parking of main line direction, and guarantee must to have before and after " fleet's array " " space-time is broken to be lacked " neutral gear, allow road junction without block.
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| CN2011101208094A CN102280024A (en) | 2011-05-05 | 2011-05-05 | Two-dimensional control system for preventing traffic jam |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103854504A (en) * | 2014-03-05 | 2014-06-11 | 安锐 | Square matrix type road traffic inducing method and system |
| CN105118307A (en) * | 2015-09-14 | 2015-12-02 | 大连交通大学 | Method for realizing both-way non-stop driving on urban road |
| CN106504547A (en) * | 2016-11-18 | 2017-03-15 | 赵元征 | A kind of primary and secondary traffic light intersection of four by-pass normal open of opposite bilateral time crossing commutation |
| CN108873885A (en) * | 2018-04-25 | 2018-11-23 | 珠海市杰理科技股份有限公司 | Control method for vehicle, device and system |
-
2011
- 2011-05-05 CN CN2011101208094A patent/CN102280024A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103854504A (en) * | 2014-03-05 | 2014-06-11 | 安锐 | Square matrix type road traffic inducing method and system |
| CN103854504B (en) * | 2014-03-05 | 2016-08-24 | 安锐 | Square formation type road traffic abductive approach and inducible system |
| CN105118307A (en) * | 2015-09-14 | 2015-12-02 | 大连交通大学 | Method for realizing both-way non-stop driving on urban road |
| CN106504547A (en) * | 2016-11-18 | 2017-03-15 | 赵元征 | A kind of primary and secondary traffic light intersection of four by-pass normal open of opposite bilateral time crossing commutation |
| CN108873885A (en) * | 2018-04-25 | 2018-11-23 | 珠海市杰理科技股份有限公司 | Control method for vehicle, device and system |
| CN108873885B (en) * | 2018-04-25 | 2021-12-10 | 珠海市杰理科技股份有限公司 | Vehicle control method, device and system |
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Application publication date: 20111214 |