CN103854494A - Traffic flow control method, system and device - Google Patents
Traffic flow control method, system and device Download PDFInfo
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- CN103854494A CN103854494A CN201210511318.7A CN201210511318A CN103854494A CN 103854494 A CN103854494 A CN 103854494A CN 201210511318 A CN201210511318 A CN 201210511318A CN 103854494 A CN103854494 A CN 103854494A
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Abstract
The invention discloses a traffic flow control method, system and device. The traffic flow control method comprises the steps that whether the value of the flow of a current downstream intersection is larger than that of the preset downstream intersection average queue flow or not is judged through a downstream intersection control device, the downstream intersection control device responds to the situation that the value of the flow of the current downstream intersection is larger than the preset value, and the downstream intersection control device calculates the current admissible queue flow of the downstream intersection, and calculates the traffic flow of an upstream intersection lane according to the current admissible queue flow of the downstream intersection and the vehicle passage probability of the upstream intersection lane; the downstream intersection control device feeds the traffic flow of the upstream intersection lane back to an upstream intersection control device so that the upstream intersection control device can carry out flow control according to the traffic flow fed back by the downstream intersection control device and the traffic flow stipulated in the local policy. According to the technical scheme, intelligent control over the traffic flow on the basis of state feedback is achieved, and optimized traffic flow control can be achieved.
Description
Technical field
The present invention relates to control field, particularly a kind of control method of the magnitude of traffic flow, system and device.
Background technology
In current traffic control system, because closing between crossing the flow control strategy according to oneself separately, each carries out traffic control, there is no each other the mutual of flow information, in the time there is choking phenomenon in certain crossing, the crossing that periphery closes on is owing to not knowing congestion situations, the crossing state of still administering according to oneself carries out work, may increase the weight of to block like this traffic pressure at crossing.
Shown in Figure 1, for example, walk to crossing A by vehicle by crossing B, wherein crossing B is the crossing, upstream (hereinafter to be referred as crossing, upstream) of crossing A, crossing A is the downstream road junction (hereinafter to be referred as downstream road junction) of crossing B.The vehicle of crossing B is respectively by B1, B2, B3 track, and the left-hand rotation of crossing B, craspedodrome, right-turn lane sail crossing A into.
Due to communicating by letter each other not between crossing B and crossing A, therefore, in the time that blocking appears in crossing A, crossing B can not be known the generation of this congestion situations in time, continue according to the local control strategy of crossing B, allow vehicle respectively by B1, B2, input BA section, B3 track, thereby cause the obstruction in BA section, even increase the weight of the congestion situations of crossing A.
Visible, independently local vehicle flow control is only carried out traffic control according to local flow control strategy, and the congestion situations of the adjacent intersection of perception in time even increases the weight of the congestion situation of congested link.
Summary of the invention
According to the embodiment of the present invention aspect, a technical matters to be solved is: provide a kind of control method, system and device of the magnitude of traffic flow, so that the Based Intelligent Control of the magnitude of traffic flow based on feedback of status to be provided.
The control system of a kind of magnitude of traffic flow that the embodiment of the present invention provides, described system comprises: downstream road junction control device, crossing, upstream control device;
Whether described downstream road junction control device, exceed preset downstream road junction average queue amount La for identifying the current wagon flow Lz of queue size of downstream road junction; Exceed described downstream road junction average queue amount La in response to the current wagon flow Lz of queue size of described downstream road junction, calculate the current Lc of queue size that holds of downstream road junction; According to the current vehicle pass-through probability bi that holds the Lc of queue size and upstream road junction roadway of described downstream road junction, calculate the traffic volume Li of upstream road junction roadway; The traffic volume Li of described upstream road junction roadway is sent to crossing, upstream control device;
Crossing, described upstream control device, for identifying the traffic volume Li of the upstream road junction roadway that whether receives the transmission of downstream road junction control device, in response to the traffic volume Li that receives described upstream road junction roadway; The size of the traffic volume of the local policy of the traffic volume Li of more described upstream road junction roadway and predetermined upstream road junction roadway, is used a conduct less in comparative result to control parameter, controls the traffic signal devices of described upstream road junction roadway.
Preferably, described downstream road junction control device, specifically by calculating and obtain the current Lc of queue size that holds of described downstream road junction with lower inequality:
Lc+Lz≤K×Lmax，
Wherein, Lz is that the current wagon flow of downstream road junction queue size, Lmax are that predetermined downstream road junction maximum is held queue size, and K is predetermined scale-up factor, and the value of K is 0 < K≤1.
Preferably, described upstream road junction roadway is n, and the vehicle pass-through probability bi sum in a crossing n track, described upstream meets following formula:
B1+b2+bi+ ... + bn=1, bi is the vehicle pass-through probability in i track, crossing, upstream, i is natural number and 1≤i≤n.
Preferably, crossing, described upstream control device, also for the vehicle pass-through probability bi in i track, crossing, upstream is sent to described downstream road junction control device, wherein, i is natural number and 1≤i≤n;
Described downstream road junction control device, specifically calculates the traffic volume Li in i track, crossing, upstream by following formula:
Li＝Lc×bi，
Wherein, Lc is the current queue size that holds of described downstream road junction, and bi is the vehicle pass-through probability in i track, crossing, upstream, and i is natural number and 1≤i≤n.
Preferably, between described downstream road junction control device and described downstream road junction control device, carry out data communication by IP-based wireline communication network or cordless communication network;
Described cordless communication network comprises any one in global system for mobile communications GSM, CDMA CDMA, general packet radio service gprs, Wideband Code Division Multiple Access (WCDMA) WCDMA, CDMA2000 1x, CDMA 2000 1X EVDO, TD SDMA TDSCDMA, Long Term Evolution project LTE.
Preferably, described system also comprises: harvester, for gathering the current wagon flow Lz of queue size of described downstream road junction;
Described harvester, specifically for by comprising that any one in sensor, video monitoring, ultrasonic listening mode gathers the current wagon flow Lz of queue size of described downstream road junction.
The control method of a kind of magnitude of traffic flow that the embodiment of the present invention provides, described method comprises:
Whether the current wagon flow Lz of queue size of downstream road junction control device identification downstream road junction exceedes preset downstream road junction average queue amount La;
Exceed described downstream road junction average queue amount La in response to the current wagon flow Lz of queue size of described downstream road junction, described downstream road junction control device calculates the current Lc of queue size that holds of downstream road junction;
Described downstream road junction control device, according to the current vehicle pass-through probability bi that holds the Lc of queue size and upstream road junction roadway of described downstream road junction, calculates the traffic volume Li of upstream road junction roadway;
Described downstream road junction control device sends to the traffic volume Li of described upstream road junction roadway the traffic volume Li of upstream road junction roadway;
Whether the control device identification of crossing, described upstream receives the traffic volume Li of the upstream road junction roadway of downstream road junction control device transmission;
Crossing, described upstream control device is in response to the traffic volume Li that receives i track, crossing, described upstream, the size of the traffic volume of the local policy of the traffic volume Li of more described upstream road junction roadway and predetermined upstream road junction roadway, use a conduct less in comparative result to control parameter, control the traffic signal devices of described upstream road junction roadway.
Preferably, the current Lc of queue size that holds of the described downstream road junction of described calculating, concrete by calculating and obtain with lower inequality:
Lc+Lz≤K×Lmax，
Wherein, Lz is that the current wagon flow of downstream road junction queue size, Lmax are that predetermined downstream road junction maximum is held queue size, and K is predetermined scale-up factor, and the value of K is 0 < K≤1.
Preferably, described upstream road junction roadway is n, the vehicle pass-through probability bi in i track, and the vehicle pass-through probability sum in a crossing n track, described upstream meets following formula:
B1+b2+bi+ ... + bn=1, bi is the vehicle pass-through probability in i track, crossing, upstream, i is natural number and 1≤i≤n.
Preferably, described method also comprises:
The vehicle pass-through probability bi in i track, crossing, upstream is sent to described downstream road junction control device by crossing, described upstream control device, and wherein, i is natural number and 1≤i≤n, and n is upstream road junction roadway number;
The traffic volume Li of described calculating upstream road junction roadway, specifically comprises:
Calculate the traffic volume Li in i track, crossing, upstream, wherein, calculate the traffic volume Li in i track, crossing, upstream by following formula:
Li＝Lc×bi，
Wherein, Lc is the current queue size that holds of described downstream road junction, and bi is the vehicle pass-through probability in i track, crossing, upstream, and i is natural number and 1≤i≤n.
Preferably, between described downstream road junction control device and described downstream road junction control device, carry out data communication by IP-based wireline communication network or cordless communication network;
Described cordless communication network comprises any one in global system for mobile communications GSM, CDMA CDMA, general packet radio service gprs, Wideband Code Division Multiple Access (WCDMA) WCDMA, CDMA2000 1x, CDMA 2000 1X EVDO, TD SDMA TDSCDMA, Long Term Evolution project LTE.
Preferably, described method also comprises: gather the current wagon flow Lz of queue size of described downstream road junction by any one in sensor, video monitoring, ultrasonic listening mode.
The control device of a kind of magnitude of traffic flow that the embodiment of the present invention provides, comprising:
Whether recognition unit, exceed preset downstream road junction average queue amount La for identifying the current wagon flow Lz of queue size of downstream road junction;
Computing unit, for exceeding described downstream road junction average queue amount La in response to the current wagon flow Lz of queue size of described downstream road junction, calculates the current Lc of queue size that holds of downstream road junction; According to the current vehicle pass-through probability bi that holds the Lc of queue size and upstream road junction roadway of described downstream road junction, calculate the traffic volume Li of upstream road junction roadway;
The first communication unit, for the traffic volume Li of described upstream road junction roadway is sent to crossing, upstream control device, to make the size of traffic volume of the traffic volume Li of the more described upstream of control device, crossing, described upstream road junction roadway and the local policy of predetermined upstream road junction roadway, and use a conduct less in comparative result to control parameter, control the traffic signal devices of described upstream road junction roadway.
Preferably, described control device also comprises:
Collecting unit, for gathering the current wagon flow Lz of queue size of described downstream road junction by any one of sensor, video monitoring, ultrasonic listening mode.
Preferably, described control device also comprises:
Second communication unit, for when described control device is during as crossing, upstream control device, receives the traffic volume Li of described upstream road junction roadway;
Control decision unit, for the size of the traffic volume of the local policy of the traffic volume Li of the traffic volume upstream road junction roadway of more described upstream road junction roadway and predetermined upstream road junction roadway, use a conduct less in comparative result to control parameter, control the traffic signal devices of described upstream road junction roadway.
Control method, system and the device of the magnitude of traffic flow providing based on the above embodiment of the present invention, identify current downstream road junction by downstream road junction control device and whether exceed preset downstream road junction average queue amount, in response to exceeding this prevalue, may there is improper traffic conditions, downstream road junction control device calculates the current queue size that holds of downstream road junction, and according to the vehicle pass-through probability in conjunction with upstream road junction roadway, calculate the traffic volume of upstream road junction roadway.Afterwards, the traffic volume of upstream road junction roadway is fed back to crossing, upstream control device by downstream road junction control device, crossing, upstream control device can comprehensively be compared according to the traffic volume of downstream road junction control device feedback and the traffic volume of local policy, make not only to consider the traffic at actual local crossing in the time determining the control strategy at crossing, upstream, also considered the state of downstream road junction.
By downstream road junction to its crossing, upstream system advertises self traffic, as one of important evidence of upstream crossing traffic control system implementation strategy, realize the Based Intelligent Control of the magnitude of traffic flow based on feedback of status, the traffic control strategy of more optimizing can be provided, even if there is car blockage situation, adjacent intersection also can perceive congestion situations in time, thereby implements the vehicle flowrate control of optimizing, alleviate congestion degree, realizes the optimal control of the magnitude of traffic flow.
By the detailed description to exemplary embodiment of the present invention referring to accompanying drawing, it is clear that further feature of the present invention and advantage thereof will become.
Brief description of the drawings
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, to the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
, it should be understood that for convenience of description, the size of the various piece shown in accompanying drawing is not to draw according to actual proportionate relationship meanwhile.In similar label and letter accompanying drawing below, represent similar terms, therefore, once be defined in an a certain Xiang Yi accompanying drawing, in accompanying drawing subsequently, do not need it to be further discussed.
The accompanying drawing that forms a part for instructions has been described embodiments of the invention, and together with the description for explaining principle of the present invention.
With reference to accompanying drawing, according to detailed description below, can more be expressly understood the present invention, wherein:
Fig. 1 illustrates the track schematic diagram of adjacent intersection;
Fig. 2 illustrates the schematic flow sheet of a kind of embodiment of control method of the magnitude of traffic flow provided by the present invention;
Fig. 3 illustrates the structural representation of a kind of embodiment of control system of the magnitude of traffic flow provided by the present invention;
Fig. 4 illustrates the structural representation of a kind of embodiment of control device of the magnitude of traffic flow provided by the present invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiment.It should be noted that: unless illustrate in addition, the parts of setting forth in these embodiments and the positioned opposite of step do not limit the scope of the invention.
Illustrative to the description only actually of at least one exemplary embodiment below, never as any restriction to the present invention and application or use.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtaining under creative work prerequisite, belong to the scope of protection of the invention.
May not discuss in detail for the known technology of person of ordinary skill in the relevant, method and apparatus, but in suitable situation, described technology, method and apparatus should be regarded as authorizing a part for instructions.
In all examples with discussing shown here, it is exemplary that any occurrence should be construed as merely, instead of as restriction.Therefore, other example of exemplary embodiment can have different values.
Shown in Figure 2, Fig. 2 illustrates the schematic flow sheet of a kind of embodiment of control method of the magnitude of traffic flow provided by the present invention.In this embodiment, the control method of the magnitude of traffic flow comprises:
201, whether the current wagon flow Lz of queue size of downstream road junction control device identification downstream road junction exceedes preset downstream road junction average queue amount La;
202, in response to downstream road junction, the current wagon flow Lz of queue size exceedes downstream road junction average queue amount La, and downstream road junction control device calculates the current Lc of queue size that holds of downstream road junction;
203, downstream road junction control device, according to the current vehicle pass-through probability bi that holds the Lc of queue size and upstream road junction roadway of downstream road junction, calculates the traffic volume Li of upstream road junction roadway;
204, downstream road junction control device sends to the traffic volume Li of upstream road junction roadway the traffic volume Li of upstream road junction roadway;
205, whether control device identification in crossing, upstream receives the traffic volume Li of the upstream road junction roadway of downstream road junction control device transmission;
206, crossing, upstream control device is in response to the traffic volume Li that receives i track, crossing, upstream, the size of the traffic volume of the local policy of the traffic volume Li of comparison upstream road junction roadway and predetermined upstream road junction roadway, use a conduct less in comparative result to control parameter, control the traffic signal devices of upstream road junction roadway.
The control method of the magnitude of traffic flow that the above embodiment of the present invention provides, by downstream road junction to its crossing, upstream system advertises self traffic, as one of important evidence of upstream crossing traffic control system implementation strategy, realize the Based Intelligent Control of the magnitude of traffic flow based on feedback of status, the traffic control strategy of more optimizing can be provided, even if there is car blockage situation, adjacent intersection also can perceive congestion situations in time, thereby implement the vehicle flowrate control of optimizing, alleviate congestion degree, realizes the optimal control of the magnitude of traffic flow.
Crossing, upstream control device specifically uses control parameter, controls the traffic signal devices of upstream road junction roadway and can specifically implement according to mode well known to those skilled in the art.
According to the inventive method embodiment concrete example, calculate the current Lc of queue size that holds of downstream road junction, concrete by calculating and obtain with lower inequality:
Lc+Lz≤K × Lmax, wherein, Lz is that the current wagon flow of downstream road junction queue size, Lmax are that predetermined downstream road junction maximum is held queue size, and K is predetermined scale-up factor, and the value of K is 0 < K≤1.
The setting of K is determined by road management, also affects the size of the result of calculation of Lc.For example, road management decision road takies and can reach 100%, now K=1, so LC+LZ≤LMAX.If regulation only allows to take 80%, LC+LZ≤80% × LMAX so.Calculate the maximal value of the Lc value of this inequality acquisition, for the traffic volume Li of subsequent calculations upstream road junction roadway.Certainly, Lc also can get and be less than this peaked numerical value.
According to the inventive method embodiment concrete example, upstream road junction roadway is n, the vehicle pass-through probability bi in i track, and the vehicle pass-through probability sum in n track, crossing, upstream meets following formula: b1+b2+bi+ ... + bn=1.
According to the inventive method embodiment concrete example, the method also comprises:
The vehicle pass-through probability bi in i track, crossing, upstream is sent to downstream road junction control device by crossing, upstream control device, and wherein, i is natural number and 1≤i≤n, and n is upstream road junction roadway number.The traffic volume Li that calculates upstream road junction roadway, specifically comprises:
Calculate the traffic volume Li in i track, crossing, upstream, wherein, calculate the traffic volume Li in i track, crossing, upstream by following formula:
Li=Lc × bi, wherein, Lc is the current queue size that holds of downstream road junction, and bi is the vehicle pass-through probability in i track, crossing, upstream, and i is natural number and 1≤i≤n.
According to the inventive method embodiment concrete example, between crossing, upstream control device and downstream road junction control device, carry out data communication by IP-based wireline communication network or cordless communication network.Cordless communication network can comprise global system for mobile communications (GlobalSystem of Mobile communication, GSM), CDMA (Code DivisionMultiple Access, CDMA), general packet radio service (General Packet RadioService, GPRS), Wideband Code Division Multiple Access (WCDMA) (Wideband Code Division MultipleAccess, WCDMA), CDMA2000 1x, CDMA2000 1x EV-DO, TD SDMA (Time Division-Synchronous Code Division MultipleAccess, TD SCDMA), Long Term Evolution project (Long Term Evolution, LTE) any one in.
According to the inventive method embodiment concrete example, gather the current wagon flow Lz of queue size of downstream road junction by any one method in sensor, video monitoring, ultrasonic detection method.
Specific embodiment of the inventive method is exemplarily described below.Continue shown in Figure 1ly, under normal circumstances, BA crossing can hold 20 cars altogether, and Lmax is 20.When B crossing green light, crossing, upstream B1, B2, tri-directions of B3 will be respectively to A 5 cars of letting pass, the traffic volume of the local policy of predetermined upstream road junction roadway is respectively 5.Downstream road junction average queue amount La is 8, and downstream road junction average queue amount can be drawn by historical data statistics.
When A crossing burst accident, cause having 10 cars to be trapped on A crossing or side BA track, A crossing, the current wagon flow Lz of queue size of downstream road junction is 10, the current wagon flow of downstream road junction queue size can gather by aforementioned acquisition method.Downstream road junction control device exceedes downstream road junction average queue amount La=8 in response to identifying the current wagon flow Lz=10 of queue size of downstream road junction, downstream road junction control device calculates the current Lc:Lc+Lz≤K × Lmax of queue size that holds of downstream road junction, wherein, can set K is 1, Lc≤10.Lc maximum occurrences is 10.The vehicle pass-through probability b1+b2+b3=1 in San Ge track, crossing, upstream, if b1=b2=b3=1/3, for the traffic volume L1=L2=L3 of each upstream road junction roadway, is Lc × bi=10 × (1/3), is approximately 3.Be that each upstream road junction roadway allows by 3 cars, thereby make BA section be detained at most 19 cars.Be appreciated that Lc also can get the numerical value that is less than this maximal value 3.
The accident of supposing A crossing is very serious, blocks completely, and these 19 cars are still trapped in BA section, have no longer allowed vehicle to come, and the traffic lights of three directions in B crossing will be red light always so, no longer to A-B section clearance vehicle, until the congestion relief of BA section.
If according to not adopting said method embodiment provided by the invention, 3 B crossing directions still according to a lamp to A 5 cars of letting pass, BA road will have 25 cars so, exceed road capacity, increase the weight of congestion situations.
It should be noted that in above-mentioned computation process, can, to changing between the numerical value for calculating, for example, between the length of queue size and the number of vehicle, change.
Shown in Figure 3, Fig. 3 shows the structural representation of a kind of embodiment of control system of the magnitude of traffic flow provided by the invention.The system of this embodiment comprises: downstream road junction control device 301, crossing, upstream control device 302.
Whether downstream road junction control device 301, exceed preset downstream road junction average queue amount La for identifying the current wagon flow Lz of queue size of downstream road junction; In response to downstream road junction, the current wagon flow Lz of queue size exceedes downstream road junction average queue amount La, calculates the current Lc of queue size that holds of downstream road junction; According to the current vehicle pass-through probability bi that holds the Lc of queue size and upstream road junction roadway of downstream road junction, calculate the traffic volume Li of upstream road junction roadway; The traffic volume Li of upstream road junction roadway is sent to crossing, upstream control device;
Crossing, upstream control device 302, for identifying the traffic volume Li that whether receives upstream road junction roadway; In response to the traffic volume Li that receives upstream road junction roadway, the size of the traffic volume of the local policy of the traffic volume Li of comparison upstream road junction roadway and predetermined upstream road junction roadway, use a conduct less in comparative result to control parameter, control the traffic signal devices of upstream road junction roadway.
A concrete example of system according to the invention embodiment, downstream road junction control device, specifically by calculating and obtain the current Lc of queue size that holds of downstream road junction with lower inequality:
Lc+Lz≤K×Lmax，
Wherein, Lz is that the current wagon flow of downstream road junction queue size, Lmax are that predetermined downstream road junction maximum is held queue size, and K is predetermined scale-up factor, and the value of K is 0 < K≤1.
A concrete example of system according to the invention embodiment, upstream road junction roadway is n, the vehicle pass-through probability bi sum in n track, crossing, upstream meets following formula:
B1+b2+bi+ ... + bn=1, bi is the vehicle pass-through probability in i track, crossing, upstream, i is natural number and 1≤i≤n.
A concrete example of system according to the invention embodiment, crossing, upstream control device, also for the vehicle pass-through probability bi in i track, crossing, upstream is sent to downstream road junction control device, wherein, i is natural number and 1≤i≤n;
Downstream road junction control device, specifically calculates the traffic volume Li in i track, crossing, upstream by following formula:
Li=Lc × bi, wherein, Lc is the current queue size that holds of downstream road junction, and bi is the vehicle pass-through probability in i track, crossing, upstream, and i is natural number and 1≤i≤n.
A concrete example of system according to the invention embodiment, carries out data communication by IP-based wireline communication network or cordless communication network between downstream road junction control device and downstream road junction control device;
Cordless communication network comprises any one in global system for mobile communications GSM, CDMA CDMA, general packet radio service gprs, Wideband Code Division Multiple Access (WCDMA) WCDMA, CDMA2000 1x, CDMA 2000 1X EVDO, TD SDMA TD SCDMA, Long Term Evolution project LTE.
A concrete example of system according to the invention embodiment, this system also comprises: harvester, for gathering the current wagon flow Lz of queue size of downstream road junction.Harvester gathers the current wagon flow Lz of queue size of downstream road junction by comprising any one method in sensor, video monitoring, ultrasonic detection method.
Shown in Figure 4, the figure shows the structural representation of a kind of embodiment of control device of the magnitude of traffic flow provided by the invention.This control device can be used as downstream road junction control device.This control device comprises:
Whether recognition unit 401, exceed preset downstream road junction average queue amount La for identifying the current wagon flow Lz of queue size of downstream road junction;
The first communication unit 403, for the traffic volume Li of upstream road junction roadway is sent to crossing, upstream control device, to make the relatively size of the traffic volume of the traffic volume Li of upstream road junction roadway and the local policy of predetermined upstream road junction roadway of crossing, upstream control device, and use a conduct less in comparative result to control parameter, control the traffic signal devices of upstream road junction roadway.
Control device embodiment concrete example according to the present invention, control device also comprises:
Collecting unit 404, for gathering the current wagon flow Lz of queue size of downstream road junction by any one method of sensor, video monitoring, ultrasonic detection method.
Control device embodiment concrete example according to the present invention, control device is also as downstream road junction control device, and this control device also comprises:
Control decision unit 406, for the size of the traffic volume of the local policy of the traffic volume Li of the traffic volume upstream road junction roadway of upstream road junction roadway relatively and predetermined upstream road junction roadway, use a conduct less in comparative result to control parameter, control the traffic signal devices of upstream road junction roadway.
The first communication unit 403 can carry out data communication by the control device of IP-based wireline communication network or cordless communication network and adjacent intersection with second communication unit 405.Cordless communication network comprises any one in global system for mobile communications GSM, CDMA CDMA, general packet radio service gprs, Wideband Code Division Multiple Access (WCDMA) WCDMA, CDMA2000 1x, CDMA 20001X EVDO, TD SDMA TD SCDMA, Long Term Evolution project LTE.
So far, described in detail according to the control method of a kind of magnitude of traffic flow of the present invention, system and device.For fear of covering design of the present invention, details more known in the field are not described.Those skilled in the art, according to description above, can understand how to implement technical scheme disclosed herein completely.
In this instructions, each embodiment all adopts the mode of going forward one by one to describe, and what each embodiment stressed is and the difference of other embodiment, same or analogous part cross-references between each embodiment.For system, device embodiment, because it is substantially corresponding with embodiment of the method, so description is fairly simple, relevant part is referring to the part explanation of embodiment of the method.
May realize in many ways control method, system and the device of the magnitude of traffic flow of the present invention.For example, can realize by any combination of software, hardware, firmware or software, hardware, firmware control method, system and the device of the magnitude of traffic flow of the present invention.The said sequence that is used for the step of described method is only in order to describe, and the step of method of the present invention is not limited to above specifically described order, unless otherwise specified.In addition, in certain embodiments, can be also the program being recorded in recording medium by the invention process, these programs comprise the machine readable instructions for realizing the method according to this invention.Thereby the present invention also covers the recording medium of storing the program for carrying out the method according to this invention.
Although specific embodiments more of the present invention are had been described in detail by example, it should be appreciated by those skilled in the art, above example is only in order to describe, instead of in order to limit the scope of the invention.It should be appreciated by those skilled in the art, can without departing from the scope and spirit of the present invention, above embodiment be modified.Scope of the present invention is limited by claims.
Claims (15)
1. a control system for the magnitude of traffic flow, is characterized in that, described system comprises: downstream road junction control device, crossing, upstream control device;
Whether described downstream road junction control device, exceed preset downstream road junction average queue amount La for identifying the current wagon flow Lz of queue size of downstream road junction; Exceed described downstream road junction average queue amount La in response to the current wagon flow Lz of queue size of described downstream road junction, calculate the current Lc of queue size that holds of downstream road junction; According to the current vehicle pass-through probability bi that holds the Lc of queue size and upstream road junction roadway of described downstream road junction, calculate the traffic volume Li of upstream road junction roadway; The traffic volume Li of described upstream road junction roadway is sent to crossing, upstream control device;
Crossing, described upstream control device, for identifying the traffic volume Li of the upstream road junction roadway that whether receives the transmission of downstream road junction control device, in response to the traffic volume Li that receives described upstream road junction roadway; The size of the traffic volume of the local policy of the traffic volume Li of more described upstream road junction roadway and predetermined upstream road junction roadway, is used a conduct less in comparative result to control parameter, controls the traffic signal devices of described upstream road junction roadway.
2. system according to claim 1, is characterized in that, described downstream road junction control device, specifically by calculating and obtain the current Lc of queue size that holds of described downstream road junction with lower inequality:
Lc+Lz≤K×Lmax，
Wherein, Lz is that the current wagon flow of downstream road junction queue size, Lmax are that predetermined downstream road junction maximum is held queue size, and K is predetermined scale-up factor, and the value of K is 0 < K≤1.
3. system according to claim 2, is characterized in that, described upstream road junction roadway is n, and the vehicle pass-through probability bi sum in a crossing n track, described upstream meets following formula:
B1+b2+bi+ ... + bn=1, bi is the vehicle pass-through probability in i track, crossing, upstream, i is natural number and 1≤i≤n.
4. system according to claim 3, is characterized in that, crossing, described upstream control device, and also for the vehicle pass-through probability bi in i track, crossing, upstream is sent to described downstream road junction control device, wherein, i is natural number and 1≤i≤n;
Described downstream road junction control device, specifically calculates the traffic volume Li in i track, crossing, upstream by following formula:
Li＝Lc×bi，
Wherein, Lc is the current queue size that holds of described downstream road junction, and bi is the vehicle pass-through probability in i track, crossing, upstream, and i is natural number and 1≤i≤n.
5. according to the system of claim 1 to 4 any one, it is characterized in that, between described downstream road junction control device and described downstream road junction control device, carry out data communication by IP-based wireline communication network or cordless communication network;
Described cordless communication network comprises any one in global system for mobile communications GSM, CDMA CDMA, general packet radio service gprs, Wideband Code Division Multiple Access (WCDMA) WCDMA, CDMA2000 1x, CDMA 2000 1X EVDO, TD SDMA TDSCDMA, Long Term Evolution project LTE.
6. according to the system of claim 5, it is characterized in that, described system also comprises: harvester, for gathering the current wagon flow Lz of queue size of described downstream road junction;
Described harvester, specifically for by comprising that any one in sensor, video monitoring, ultrasonic listening mode gathers the current wagon flow Lz of queue size of described downstream road junction.
7. a control method for the magnitude of traffic flow, is characterized in that, described method comprises:
Whether the current wagon flow Lz of queue size of downstream road junction control device identification downstream road junction exceedes preset downstream road junction average queue amount La;
Exceed described downstream road junction average queue amount La in response to the current wagon flow Lz of queue size of described downstream road junction, described downstream road junction control device calculates the current Lc of queue size that holds of downstream road junction;
Described downstream road junction control device, according to the current vehicle pass-through probability bi that holds the Lc of queue size and upstream road junction roadway of described downstream road junction, calculates the traffic volume Li of upstream road junction roadway;
Described downstream road junction control device sends to the traffic volume Li of described upstream road junction roadway the traffic volume Li of upstream road junction roadway;
Whether the control device identification of crossing, described upstream receives the traffic volume Li of the upstream road junction roadway of downstream road junction control device transmission;
Crossing, described upstream control device is in response to the traffic volume Li that receives i track, crossing, described upstream, the size of the traffic volume of the local policy of the traffic volume Li of more described upstream road junction roadway and predetermined upstream road junction roadway, use a conduct less in comparative result to control parameter, control the traffic signal devices of described upstream road junction roadway.
8. method according to claim 7, is characterized in that, the current Lc of queue size that holds of the described downstream road junction of described calculating is concrete by calculating and obtain with lower inequality:
Lc+Lz≤K×Lmax，
Wherein, Lz is that the current wagon flow of downstream road junction queue size, Lmax are that predetermined downstream road junction maximum is held queue size, and K is predetermined scale-up factor, and the value of K is 0 < K≤1.
9. method according to claim 8, is characterized in that, described upstream road junction roadway is n, the vehicle pass-through probability bi in i track, and the vehicle pass-through probability sum in a crossing n track, described upstream meets following formula:
B1+b2+bi+ ... + bn=1, bi is the vehicle pass-through probability in i track, crossing, upstream, i is natural number and 1≤i≤n.
10. method according to claim 9, is characterized in that, described method also comprises:
The vehicle pass-through probability bi in i track, crossing, upstream is sent to described downstream road junction control device by crossing, described upstream control device, and wherein, i is natural number and 1≤i≤n, and n is upstream road junction roadway number;
The traffic volume Li of described calculating upstream road junction roadway, specifically comprises:
Calculate the traffic volume Li in i track, crossing, upstream, wherein, calculate the traffic volume Li in i track, crossing, upstream by following formula:
Li＝Lc×bi，
Wherein, Lc is the current queue size that holds of described downstream road junction, and bi is the vehicle pass-through probability in i track, crossing, upstream, and i is natural number and 1≤i≤n.
11. according to the method described in claim 6 to 10 any one, it is characterized in that, between described downstream road junction control device and described downstream road junction control device, carries out data communication by IP-based wireline communication network or cordless communication network;
Described cordless communication network comprises any one in global system for mobile communications GSM, CDMA CDMA, general packet radio service gprs, Wideband Code Division Multiple Access (WCDMA) WCDMA, CDMA2000 1x, CDMA 2000 1X EVDO, TD SDMA TDSCDMA, Long Term Evolution project LTE.
12. methods according to claim 11, is characterized in that, described method also comprises: gather the current wagon flow Lz of queue size of described downstream road junction by any one in sensor, video monitoring, ultrasonic listening mode.
The control device of 13. 1 kinds of magnitudes of traffic flow, is characterized in that, comprising:
Whether recognition unit, exceed preset downstream road junction average queue amount La for identifying the current wagon flow Lz of queue size of downstream road junction;
Computing unit, for exceeding described downstream road junction average queue amount La in response to the current wagon flow Lz of queue size of described downstream road junction, calculates the current Lc of queue size that holds of downstream road junction; According to the current vehicle pass-through probability bi that holds the Lc of queue size and upstream road junction roadway of described downstream road junction, calculate the traffic volume Li of upstream road junction roadway;
The first communication unit, for the traffic volume Li of described upstream road junction roadway is sent to crossing, upstream control device, to make the size of traffic volume of the traffic volume Li of the more described upstream of control device, crossing, described upstream road junction roadway and the local policy of predetermined upstream road junction roadway, and use a conduct less in comparative result to control parameter, control the traffic signal devices of described upstream road junction roadway.
14. control device according to claim 13, is characterized in that, described control device also comprises:
Collecting unit, for gathering the current wagon flow Lz of queue size of described downstream road junction by any one of sensor, video monitoring, ultrasonic listening mode.
15. control device according to claim 13, is characterized in that, described control device also comprises:
Second communication unit, for when described control device is during as crossing, upstream control device, receives the traffic volume Li of described upstream road junction roadway;
Control decision unit, for the size of the traffic volume of the local policy of the traffic volume Li of the traffic volume upstream road junction roadway of more described upstream road junction roadway and predetermined upstream road junction roadway, use a conduct less in comparative result to control parameter, control the traffic signal devices of described upstream road junction roadway.
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105321358A (en) * | 2014-07-31 | 2016-02-10 | 段绍节 | Urban road intersection and road traffic intelligent network real-time command system |
| CN105608914A (en) * | 2016-03-17 | 2016-05-25 | 佛山市高明区云大机械科技有限公司 | Traffic control system based on traffic flow |
| CN106023607A (en) * | 2015-03-25 | 2016-10-12 | 贵州省交通规划勘察设计研究院股份有限公司 | Traffic light control method and system |
| CN106846840A (en) * | 2017-04-20 | 2017-06-13 | 成都信息工程大学 | A kind of method for controlling traffic signal lights based on vehicle flow |
| CN111667700A (en) * | 2020-04-24 | 2020-09-15 | 安徽三联学院 | Intersection variable lane control method based on short-term traffic state prediction |
| CN113470390A (en) * | 2021-07-09 | 2021-10-01 | 公安部交通管理科学研究所 | Multiphase dynamic coordination control method for short-link intersection edge node fusion |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07272190A (en) * | 1994-02-09 | 1995-10-20 | Toshiba Corp | Signal control system |
| JP2003085687A (en) * | 2001-09-10 | 2003-03-20 | Sumitomo Electric Ind Ltd | Device for estimating time required for traveling between intersections |
| CN1870066A (en) * | 2005-05-25 | 2006-11-29 | 上海市市政工程管理处 | Evaluation system for road level-cross |
| JP2010211365A (en) * | 2009-03-09 | 2010-09-24 | Omron Corp | Traffic signal controller |
| CN101958049A (en) * | 2010-09-21 | 2011-01-26 | 隋亚刚 | Signal light linkage control system of express way ramp outlet and adjacent intersection in city |
| CN101968929A (en) * | 2010-10-19 | 2011-02-09 | 北方工业大学 | Optimizing control method for single intersection signal in saturated traffic state |
| JP2011233027A (en) * | 2010-04-28 | 2011-11-17 | Toyota Motor Corp | Traffic signal control device |
| CN102750826A (en) * | 2012-06-26 | 2012-10-24 | 浙江大学 | Identification method of driver response behaviors under group induction information |
-
2012
- 2012-12-04 CN CN201210511318.7A patent/CN103854494B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07272190A (en) * | 1994-02-09 | 1995-10-20 | Toshiba Corp | Signal control system |
| JP2003085687A (en) * | 2001-09-10 | 2003-03-20 | Sumitomo Electric Ind Ltd | Device for estimating time required for traveling between intersections |
| CN1870066A (en) * | 2005-05-25 | 2006-11-29 | 上海市市政工程管理处 | Evaluation system for road level-cross |
| JP2010211365A (en) * | 2009-03-09 | 2010-09-24 | Omron Corp | Traffic signal controller |
| JP2011233027A (en) * | 2010-04-28 | 2011-11-17 | Toyota Motor Corp | Traffic signal control device |
| CN101958049A (en) * | 2010-09-21 | 2011-01-26 | 隋亚刚 | Signal light linkage control system of express way ramp outlet and adjacent intersection in city |
| CN101968929A (en) * | 2010-10-19 | 2011-02-09 | 北方工业大学 | Optimizing control method for single intersection signal in saturated traffic state |
| CN102750826A (en) * | 2012-06-26 | 2012-10-24 | 浙江大学 | Identification method of driver response behaviors under group induction information |
Non-Patent Citations (1)
| Title |
|---|
| 王浩 等: "自组织式交通信号协调控制模型", 《计算机测量与控制》 * |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105321358A (en) * | 2014-07-31 | 2016-02-10 | 段绍节 | Urban road intersection and road traffic intelligent network real-time command system |
| CN106023607A (en) * | 2015-03-25 | 2016-10-12 | 贵州省交通规划勘察设计研究院股份有限公司 | Traffic light control method and system |
| CN105608914A (en) * | 2016-03-17 | 2016-05-25 | 佛山市高明区云大机械科技有限公司 | Traffic control system based on traffic flow |
| CN106846840A (en) * | 2017-04-20 | 2017-06-13 | 成都信息工程大学 | A kind of method for controlling traffic signal lights based on vehicle flow |
| CN106846840B (en) * | 2017-04-20 | 2019-09-13 | 成都信息工程大学 | A kind of method for controlling traffic signal lights based on vehicle flow |
| CN111667700A (en) * | 2020-04-24 | 2020-09-15 | 安徽三联学院 | Intersection variable lane control method based on short-term traffic state prediction |
| CN113470390A (en) * | 2021-07-09 | 2021-10-01 | 公安部交通管理科学研究所 | Multiphase dynamic coordination control method for short-link intersection edge node fusion |
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