CN108877253A - A kind of public transportation lane resource dynamic sharing method and system based on Internet of Things - Google Patents
A kind of public transportation lane resource dynamic sharing method and system based on Internet of Things Download PDFInfo
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- G08G—TRAFFIC CONTROL SYSTEMS
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Abstract
The invention discloses a kind of public transportation lane resource dynamic sharing method and system based on Internet of Things.Wherein this method includes adding to be used to indicate whether public vehicles can enter the special signal lamp of public transportation lane traveling at the crossing of the public transportation lane filtered out；Special signal lamp keeps red light phase, drives into current crossing to the bus in all public transport fleets, calculates the remaining transit time of original signal lamp by the time difference at current crossing according to the current duration of straight trip of original signal lamp and all public transport fleets；The size of duration threshold value is emptied by the remaining transit time and special signal lamp that judge original signal lamp, to control the state of special signal lamp, further determines whether that the public vehicles for allowing to keep straight on are travelled by means of public transportation lane.The present invention improves the utilization efficiency of road time-space distribution.
Description
Technical field
The invention belongs to internet of things field more particularly to a kind of shared sides of public transportation lane resource dynamic based on Internet of Things
Method and system.
Background technique
With High-speed Urbanization, Urban vehicles poputation sustainable growth, since land resource is limited, road construction
Period is long and cost is huge, alleviates the sustainable development that traffic congestion is not able to satisfy traffic by increasing path resource.Energetically
Develop public transport is to alleviate the fundamental way of traffic congestion, and the setting of public transportation lane is the effective hand for ensureing public traffic in priority
Section.But finding that partial period public transportation lane utilization rate is low according to investigation on the spot, adjacent society's lane traffic congestion causes
The waste of special lane time-space distribution.Therefore the shared theory of public transportation lane dynamic is proposed, road time-space distribution is repartitioned,
It makes full use of, alleviates traffic congestion.
The shared requirement of public transportation lane has the algorithm and safe and efficient communication network of real-time and precise, has centainly
Difficulty is not implemented at home at present.The shared research of existing special lane still adopts traditional time-sharing type public transportation lane
Theory, theoretical and algorithm is all relatively easy, control non-accurate calculating depending on experience to public vehicles, and sets to road
The setting requirements applied are more fuzzy, and the calculating of relevant parameter is not rigorous enough, and the shared rate of public transportation lane is lower, gather around to traffic is improved
Stifled effect is extremely limited, and operability is not strong, therefore is difficult the promotion and implementation on public transportation lane on a large scale, social benefit
Also not prominent enough.
Summary of the invention
In order to solve the deficiencies in the prior art, the public transportation lane resource dynamic based on Internet of Things that the present invention provides a kind of
Sharing method can improve Current traffic congestion status and improve road time-space distribution utilization efficiency.
A kind of public transportation lane resource dynamic sharing method based on Internet of Things of the invention, including：
Step 1：The public transportation lane that can dynamically share is screened in advance, is added at the crossing of the public transportation lane filtered out
It is used to indicate whether public vehicles can enter the special signal lamp of public transportation lane traveling；
Set crossing original signal lamp and when special signal lamp is at red light as no through traffic state, green light is current shape
State；Set a length of G when signal period and the current straight trip of crossing original signal lamp；A length of g when the passage of special signal lamp, dedicated letter
It is gc that signal lamp, which empties duration threshold value, wherein gc≤g≤G；
Step 2：Timing is taken to assist in the signal timing dial of the original signal lamp at two continuous crossings for adding special signal lamp
Line transfer control, and special signal lamp empties on-board and off-board delay time at stop of the duration threshold value gc equal to bus on current road segment；
Step 3：When original signal lamp at current crossing is green light, detecting whether there is in the farthest detecting distance L of bus
Bus, and if it exists, then enter step 4；Otherwise, step 5 is jumped to；Wherein, L=G*v；V is bus running speed；
Step 4：Special signal lamp keeps red light phase, drives into current crossing, root to the bus in all public transport fleets
Original signal lamp is calculated by the time difference at current crossing according to the current duration of straight trip of original signal lamp and all public transport fleets
Remaining transit time Gl；If Gl≤gc, keep special signal lamp red light constant, return step 3；If Gl>Gc then enters step 5；
Step 5：Special signal lamp becomes green light, and the public vehicles for allowing to keep straight on are travelled by means of public transportation lane；Wherein, dedicated
The long green light time of signal lamp is g, g=Gl-gc, becomes red light after special signal lamp green light.
Wherein, special lamp long green light time is g, and it is gc, remaining the green time Gl, g of general lamp that special lamp, which empties duration threshold value,
=Gl-gc.Gc is to empty on public transportation lane used in the public vehicles of piggybacking when public transportation lane signal lamp is still green light
Time prevents the public vehicles of piggybacking from hindering the traveling of next signal period bus.
Further, in the step 1, the condition for screening the public transportation lane that can dynamically share in advance is：
In same time period, ηs≥n*ηb, ηb<τ；Wherein ηsFor social lane space occupancy；ηbFor bus zone sky
Between occupation rate；N is to judge ratio, known to value；τ is judgment threshold, known to value.
Wherein, n is to judge ratio, rule of thumb value, such as n is 3；τ is judgment threshold, rule of thumb value, such as τ
It is 10%.
Further, in the step 2, the calculating process of the on-board and off-board delay time at stop of bus is on current road segment：
Predict the volume of the flow of passengers of getting off of the get on the bus volume of the flow of passengers and the current road segment of current road segment, and according on preset passenger
Vehicle is averaged the used time and passenger getting off car is averaged the used time, come calculate separately bus upper objective delay time at stop mean value and bus lower visitor
Delay time at stop mean value；
The maximum value in both the upper objective delay time at stop mean value of bus and the lower objective delay time at stop mean value of bus is taken, is made
For the on-board and off-board delay time at stop of bus on current road segment.
Further, the process for predicting the volume of the flow of passengers of getting off of the get on the bus volume of the flow of passengers and the current road segment of current road segment is：
The historical data of the passenger flow of getting on or off the bus of current road segment is obtained, and according to working day, nonworkdays, festivals or holidays, weather
Well, this five dimensions of bad weather carry out type division, construct sample set and test set；
According to the sample constructed and and test set, be utilized respectively time series models and improved BP neural networks model obtain
Getting off for the get on the bus volume of the flow of passengers and the current road segment of current road segment is obtained to getting on or off the bus passenger flow information accordingly, then by weighted calculation
The predicted value of the volume of the flow of passengers.
Further, during weighted calculation, the value of weight is determined according to type of site, type of site packet
Include peak website and non-peak website；Peak website is 3 times or more of the website that peak traffic is the flat peak volume of the flow of passengers.
The public transportation lane resource dynamic shared system based on Internet of Things that the present invention also provides a kind of, can improve and work as
Preceding traffic congestion status and raising road time-space distribution utilization efficiency.
A kind of public transportation lane resource dynamic shared system based on Internet of Things of the invention, including：
Whether special signal lamp is set at the crossing of the public transportation lane filtered out, be used to indicate public vehicles and may be used
It is travelled with entering public transportation lane；And
Traffic controller is respectively connected with special signal lamp and original signal lamp, is used to timing and is coordinated line traffic control original letter
The signal timing dial of signal lamp；And
Resource dynamic shared processor, is connected with traffic controller, and is configured as executing following steps：
The public transportation lane that can dynamically share is screened in advance, and setting crossing original signal lamp and special signal lamp are at red
It is no through traffic state when lamp, green light is prevailing state；It sets a length of when signal period and the current straight trip of crossing original signal lamp
G；A length of g when the passage of special signal lamp, it is gc that special signal lamp, which empties duration threshold value, wherein gc≤g≤G；Special signal lamp
Empty on-board and off-board delay time at stop of the duration threshold value gc equal to bus on current road segment；
When original signal lamp at current crossing is green light, it whether there is bus in the detection farthest detecting distance L of bus,
If it exists, then enter special signal lamp and keep red light phase, drive into current crossing to the bus in all public transport fleets, according to
The current duration of straight trip of original signal lamp and all public transport fleets calculate the surplus of original signal lamp by the time difference at current crossing
Remaining transit time Gl；If Gl≤gc, keep special signal lamp red light constant, continuing to test in the farthest detecting distance L of bus is
It is no that there are buses；If Gl>Gc, then special signal lamp becomes green light, and the public vehicles for allowing to keep straight on are travelled by means of public transportation lane；
Wherein, the long green light time of special signal lamp is g, g=Gl-gc, becomes red light after special signal lamp green light；Wherein, L=G*
v；V is bus running speed；
Bus is not present in the farthest detecting distance L of bus if detecting, special signal lamp becomes green light, allows to keep straight on
Public vehicles by means of public transportation lane travel；Wherein, the long green light time of special signal lamp is g, g=Gl-gc, and special signal lamp is green
Become red light after lamp.
Further, in the resource dynamic shared processor, the public transportation lane that can dynamically share is screened in advance
Condition is：
In same time period, ηs≥n*ηb, ηb<τ；Wherein ηsFor social lane space occupancy；ηbFor bus zone sky
Between occupation rate；N is to judge ratio, known to value；τ is judgment threshold, known to value.
Further, in the resource dynamic shared processor, the on-board and off-board delay time at stop of bus on current road segment
Calculating process be：
Predict the volume of the flow of passengers of getting off of the get on the bus volume of the flow of passengers and the current road segment of current road segment, and according on preset passenger
Vehicle is averaged the used time and passenger getting off car is averaged the used time, come calculate separately bus upper objective delay time at stop mean value and bus lower visitor
Delay time at stop mean value；
The maximum value in both the upper objective delay time at stop mean value of bus and the lower objective delay time at stop mean value of bus is taken, is made
For the on-board and off-board delay time at stop of bus on current road segment.
Further, in the resource dynamic shared processor, the get on the bus volume of the flow of passengers and the current road of current road segment are predicted
The process of the volume of the flow of passengers of getting off of section is：
The historical data of the passenger flow of getting on or off the bus of current road segment is obtained, and according to working day, nonworkdays, festivals or holidays, weather
Well, this five dimensions of bad weather carry out type division, construct sample set and test set；
According to the sample constructed and and test set, be utilized respectively time series models and improved BP neural networks model obtain
Getting off for the get on the bus volume of the flow of passengers and the current road segment of current road segment is obtained to getting on or off the bus passenger flow information accordingly, then by weighted calculation
The predicted value of the volume of the flow of passengers.
Further, in the resource dynamic shared processor, during weighted calculation, the value of weight according to
Type of site is determined, and type of site includes peak website and non-peak website；Peak website is that peak traffic is flat peak
3 times or more of website of the volume of the flow of passengers.
Compared with prior art, the beneficial effects of the invention are as follows：
(1) present invention considers road conditions, traffic signal timing and the driving habit of driver of reality, and method logic is tight
Sincerely, calculated result is efficiently accurate；
(2) present invention breaches traditional public traffic in priority theory, proposes that public transportation lane is total under the premise of public traffic in priority
The method enjoyed, complies fully with the sustainable development idea of special lane, improves the utilization of road time-space distribution to a certain extent
Efficiency；
(3) promotion and implementation of the invention greatly improve the traffic efficiency of public vehicles, improve traffic circulation environment, symbol
Close vast Citizen needs.
Detailed description of the invention
The accompanying drawings constituting a part of this application is used to provide further understanding of the present application, and the application's shows
Meaning property embodiment and its explanation are not constituted an undue limitation on the present application for explaining the application.
Fig. 1 is a kind of public transportation lane resource dynamic sharing method flow chart based on Internet of Things of the invention.
Fig. 2 is crossing A schematic diagram.
Fig. 3 is to maintain the special signal lamp crossing A schematic diagram that no through traffic.
Fig. 4 is the current crossing A schematic diagram of special signal lamp.
Fig. 5 is a kind of public transportation lane resource dynamic shared system structural schematic diagram based on Internet of Things of the invention.
Specific embodiment
It is noted that following detailed description is all illustrative, it is intended to provide further instruction to the application.Unless another
It indicates, all technical and scientific terms used herein has usual with the application person of an ordinary skill in the technical field
The identical meanings of understanding.
It should be noted that term used herein above is merely to describe specific embodiment, and be not intended to restricted root
According to the illustrative embodiments of the application.As used herein, unless the context clearly indicates otherwise, otherwise singular
Also it is intended to include plural form, additionally, it should be understood that, when in the present specification using term "comprising" and/or " packet
Include " when, indicate existing characteristics, step, operation, device, component and/or their combination.
Fig. 1 is a kind of public transportation lane resource dynamic sharing method flow chart based on Internet of Things of the invention.
As shown in Figure 1, a kind of public transportation lane resource dynamic sharing method based on Internet of Things of the invention, including：
Step 1：The public transportation lane that can dynamically share is screened in advance, is added at the crossing of the public transportation lane filtered out
It is used to indicate whether public vehicles can enter the special signal lamp of public transportation lane traveling.
Set crossing original signal lamp and when special signal lamp is at red light as no through traffic state, green light is current shape
State；Set a length of G when signal period and the current straight trip of crossing original signal lamp；A length of g when the passage of special signal lamp, dedicated letter
It is gc that signal lamp, which empties duration threshold value, wherein gc≤g≤G；
In the step 1, the condition for screening the public transportation lane that can dynamically share in advance is：
In same time period, ηs≥n*ηb, ηb<τ；Wherein ηsFor social lane space occupancy；ηbFor bus zone sky
Between occupation rate；N is to judge ratio, known to value；τ is judgment threshold, known to value.
Wherein, n is to judge ratio, rule of thumb value, such as n is 3；τ is judgment threshold, rule of thumb value, such as τ
It is 10%.
Step 2：Timing is taken to assist in the signal timing dial of the original signal lamp at two continuous crossings for adding special signal lamp
Line transfer control, and special signal lamp empties on-board and off-board delay time at stop of the duration threshold value gc equal to bus on current road segment.Two companies
Continuous crossing A and B, wherein crossing A is as shown in Figure 2.
If A, the road spacing at the crossing B is s, according to《Traffic administration and control》Regulation judges that signal control is coordinated according to s
Mode, synchronous mode coordinated control spacingThe spacing of interactive coordinated controlIf | s-s1|≤|s-s2
|, using synchronous mode coordinated control, if | s-s1|>|s-s2|, using interactive coordinated control.
Choosing A is crucial intersection, according to timing line traffic control timing principle, display green time gm=gme+Im+ l, effectively
Green time
Wherein：
gmGreen time is shown for major trunk roads direction on crucial intersection；
gmeFor major trunk roads direction effective green time on crucial intersection；
ImFor crucial intersection green light time interval；
L is the starting loss time；
LmFor the crucial intersection total losses time；
ym、y′mFor major trunk roads two on crucial intersection to flow-rate ratio；
YmFor the sum of maximum stream flow ratio on crucial intersection.
At crossing on the basis of A, B signal lamp timing line traffic control, to ensure piggybacking public vehicles in next green light of crossing B
Intersection is sailed out of in length, gc equivalence is in the on-board and off-board delay time at stop of bus on section.
In the step 2, the calculating process of the on-board and off-board delay time at stop of bus is on current road segment：
Predict the volume of the flow of passengers of getting off of the get on the bus volume of the flow of passengers and the current road segment of current road segment, and according on preset passenger
Vehicle is averaged the used time and passenger getting off car is averaged the used time, come calculate separately bus upper objective delay time at stop mean value and bus lower visitor
Delay time at stop mean value；
The maximum value in both the upper objective delay time at stop mean value of bus and the lower objective delay time at stop mean value of bus is taken, is made
For the on-board and off-board delay time at stop of bus on current road segment.
Wherein, the process for predicting the volume of the flow of passengers of getting off of the get on the bus volume of the flow of passengers and the current road segment of current road segment is：
The historical data of the passenger flow of getting on or off the bus of current road segment is obtained, and according to working day, nonworkdays, festivals or holidays, weather
Well, this five dimensions of bad weather carry out type division, construct sample set and test set；
According to the sample constructed and and test set, be utilized respectively time series models and improved BP neural networks model obtain
Getting off for the get on the bus volume of the flow of passengers and the current road segment of current road segment is obtained to getting on or off the bus passenger flow information accordingly, then by weighted calculation
The predicted value of the volume of the flow of passengers.
During weighted calculation, the value of weight is determined according to type of site, and type of site includes peak station
Point and non-peak website；Peak website is 3 times or more of the website that peak traffic is the flat peak volume of the flow of passengers.
Specifically, the bus on-board and off-board delay time at stop on section is predicted, according to working day, nonworkdays, festivals or holidays, day
Gas is good, 5 dimensions of bad weather carry out type division：
The historical data of guest's number on website is cleaned, i route j dimension website is got on the bus volume of the flow of passengers NijoMeetAnd
Wherein：
For guest's number mean value on website；
γ is guest's number standard deviation on website；
Parameter alpha and parameter beta require to determine according to the quality of data.
I route j dimension website is got off volume of the flow of passengers NijdData cleaning method referring to above-mentioned steps.
Time series models and improved BP neural networks model weighted calculation are utilized according to historical data, predicts NijoWith
Nijd。
With NijoFor prediction,Wherein NijoTFor time series models prediction result, NijoB
For improved BP neural networks model prediction result.
ParameterIt is determined with parameter ω according to type of site, peak site parameterω<0.5, non-peak station
Point parameterω>0.5。
Type of site is determined according to the ratio of peak peace peak passenger flow, and peak traffic is 3 times of the flat peak volume of the flow of passengers
More than, it is defined as peak website.
Wherein, NijdPrediction technique is referring to NijoPrediction.
According to above step, the passenger flow estimation of passenger getting on/off is completed.
According to getting on or off the bus, passenger flow calculates the on-board and off-board delay time at stop, obtains gc.If passenger loading is averaged, the used time isUnder passenger
Vehicle used time that is averaged is
Step 3：When original signal lamp at current crossing is green light, detecting whether there is in the farthest detecting distance L of bus
Bus, and if it exists, then enter step 4；Otherwise, step 5 is jumped to；Wherein, L=G*v；V is bus running speed；
Step 4：Special signal lamp keeps red light phase, drives into current crossing, root to the bus in all public transport fleets
Original signal lamp is calculated by the time difference at current crossing according to the current duration of straight trip of original signal lamp and all public transport fleets
Remaining transit time Gl；If Gl≤gc, keep special signal lamp red light constant, as shown in figure 3, return step 3；If Gl>Gc, then
Enter step 5.
Step 5：Special signal lamp becomes green light, as shown in figure 4, the public vehicles for allowing to keep straight on borrow public transportation lane row
It sails；Wherein, the long green light time of special signal lamp is g, g=Gl-gc, becomes red light after special signal lamp green light.
For the validity of proof scheme, crossing traffic realistic simulation is carried out using emulation technology.
Setting condition：Choosing phoenix road is emulation section, using the control mode signal of coordinated control.
Simulation result：The public vehicles unit hour traffic capacity promotes about 15%, and bus is delayed almost without increase.
Shared public transportation lane of the invention improves the space-time of road under the premise of not influencing public transport normal pass
Utilization efficiency.
In the control centre of the embeddable traffic police of the above method of the invention or semaphore, in real time to the road conditions and item on road
Part is calculated；
The present invention realizes information interconnection and Collaborative Control between bus and semaphore, guarantees the priority of public transit vehicle
And improve the traffic efficiency of public vehicles.
The public transportation lane resource dynamic shared system based on Internet of Things that the present invention also provides a kind of, can improve and work as
Preceding traffic congestion status and raising road time-space distribution utilization efficiency.
Fig. 5 is a kind of public transportation lane resource dynamic shared system structural schematic diagram based on Internet of Things of the invention.
As shown in figure 5, a kind of public transportation lane resource dynamic shared system based on Internet of Things of the invention, including：
Whether special signal lamp is set at the crossing of the public transportation lane filtered out, be used to indicate public vehicles and may be used
It is travelled with entering public transportation lane；And
Traffic controller is respectively connected with special signal lamp and original signal lamp, is used to timing and is coordinated line traffic control original letter
The signal timing dial of signal lamp；And
Resource dynamic shared processor, is connected with traffic controller, and is configured as executing following steps：
The public transportation lane that can dynamically share is screened in advance, and setting crossing original signal lamp and special signal lamp are at red
It is no through traffic state when lamp, green light is prevailing state；It sets a length of when signal period and the current straight trip of crossing original signal lamp
G；A length of g when the passage of special signal lamp, it is gc that special signal lamp, which empties duration threshold value, wherein gc≤g≤G；Special signal lamp
Empty on-board and off-board delay time at stop of the duration threshold value gc equal to bus on current road segment；
When original signal lamp at current crossing is green light, it whether there is bus in the detection farthest detecting distance L of bus,
If it exists, then enter special signal lamp and keep red light phase, drive into current crossing to the bus in all public transport fleets, according to
The current duration of straight trip of original signal lamp and all public transport fleets calculate the surplus of original signal lamp by the time difference at current crossing
Remaining transit time Gl；If Gl≤gc, keep special signal lamp red light constant, continuing to test in the farthest detecting distance L of bus is
It is no that there are buses；If Gl>Gc, then special signal lamp becomes green light, and the public vehicles for allowing to keep straight on are travelled by means of public transportation lane；
Wherein, the long green light time of special signal lamp is g, g=Gl-gc, becomes red light after special signal lamp green light；Wherein, L=G*
v；V is bus running speed；
Bus is not present in the farthest detecting distance L of bus if detecting, special signal lamp becomes green light, allows to keep straight on
Public vehicles by means of public transportation lane travel；Wherein, the long green light time of special signal lamp is g, g=Gl-gc, and special signal lamp is green
Become red light after lamp.
Specifically, in the resource dynamic shared processor, the item for the public transportation lane that can dynamically share is screened in advance
Part is：
In same time period, ηs≥n*ηb, ηb<τ；Wherein ηsFor social lane space occupancy；ηbFor bus zone sky
Between occupation rate；N is to judge ratio, known to value；τ is judgment threshold, known to value.
Specifically, in the resource dynamic shared processor, the on-board and off-board delay time at stop of bus on current road segment
Calculating process is：
Predict the volume of the flow of passengers of getting off of the get on the bus volume of the flow of passengers and the current road segment of current road segment, and according on preset passenger
Vehicle is averaged the used time and passenger getting off car is averaged the used time, come calculate separately bus upper objective delay time at stop mean value and bus lower visitor
Delay time at stop mean value；
The maximum value in both the upper objective delay time at stop mean value of bus and the lower objective delay time at stop mean value of bus is taken, is made
For the on-board and off-board delay time at stop of bus on current road segment.
Specifically, in the resource dynamic shared processor, the get on the bus volume of the flow of passengers and the current road segment of current road segment are predicted
The process of the volume of the flow of passengers of getting off be：
The historical data of the passenger flow of getting on or off the bus of current road segment is obtained, and according to working day, nonworkdays, festivals or holidays, weather
Well, this five dimensions of bad weather carry out type division, construct sample set and test set；
According to the sample constructed and and test set, be utilized respectively time series models and improved BP neural networks model obtain
Getting off for the get on the bus volume of the flow of passengers and the current road segment of current road segment is obtained to getting on or off the bus passenger flow information accordingly, then by weighted calculation
The predicted value of the volume of the flow of passengers.
Specifically, in the resource dynamic shared processor, during weighted calculation, the value of weight is according to station
Vertex type is determined, and type of site includes peak website and non-peak website；Peak website is that peak traffic is flat peak visitor
3 times or more of website of flow.
It should be understood by those skilled in the art that, the embodiment of the present invention can provide as method, system or computer program
Product.Therefore, the shape of hardware embodiment, software implementation or embodiment combining software and hardware aspects can be used in the present invention
Formula.Moreover, the present invention, which can be used, can use storage in the computer that one or more wherein includes computer usable program code
The form for the computer program product implemented on medium (including but not limited to magnetic disk storage and optical memory etc.).
The present invention be referring to according to the method for the embodiment of the present invention, the process of equipment (system) and computer program product
Figure and/or block diagram describe.It should be understood that every one stream in flowchart and/or the block diagram can be realized by computer program instructions
The combination of process and/or box in journey and/or box and flowchart and/or the block diagram.It can provide these computer programs
Instruct the processor of general purpose computer, special purpose computer, Embedded Processor or other programmable data processing devices to produce
A raw machine, so that being generated by the instruction that computer or the processor of other programmable data processing devices execute for real
The device for the function of being specified in present one or more flows of the flowchart and/or one or more blocks of the block diagram.
These computer program instructions, which may also be stored in, is able to guide computer or other programmable data processing devices with spy
Determine in the computer-readable memory that mode works, so that it includes referring to that instruction stored in the computer readable memory, which generates,
Enable the manufacture of device, the command device realize in one box of one or more flows of the flowchart and/or block diagram or
The function of being specified in multiple boxes.
These computer program instructions also can be loaded onto a computer or other programmable data processing device, so that counting
Series of operation steps are executed on calculation machine or other programmable devices to generate computer implemented processing, thus in computer or
The instruction executed on other programmable devices is provided for realizing in one or more flows of the flowchart and/or block diagram one
The step of function of being specified in a box or multiple boxes.
Those of ordinary skill in the art will appreciate that realizing all or part of the process in above-described embodiment method, being can be with
Relevant hardware is instructed to complete by computer program, the program can be stored in a computer-readable storage medium
In, the program is when being executed, it may include such as the process of the embodiment of above-mentioned each method.Wherein, the storage medium can be magnetic
Dish, CD, read-only memory (Read-Only Memory, ROM) or random access memory (Random
AccessMemory, RAM) etc..
Above-mentioned, although the foregoing specific embodiments of the present invention is described with reference to the accompanying drawings, not protects model to the present invention
The limitation enclosed, those skilled in the art should understand that, based on the technical solutions of the present invention, those skilled in the art are not
Need to make the creative labor the various modifications or changes that can be made still within protection scope of the present invention.
Claims (10)
1. a kind of public transportation lane resource dynamic sharing method based on Internet of Things, which is characterized in that including：
Step 1：The public transportation lane that can dynamically share is screened in advance, is added and is used at the crossing of the public transportation lane filtered out
Indicate whether public vehicles can enter the special signal lamp of public transportation lane traveling；
Set crossing original signal lamp and when special signal lamp is at red light as no through traffic state, green light is prevailing state；
Set a length of G when signal period and the current straight trip of crossing original signal lamp；A length of g, special signal when the passage of special signal lamp
It is gc that lamp, which empties duration threshold value, wherein gc≤g≤G；
Step 2：Timing give-and-take lines are taken in the signal timing dial of the original signal lamp at two continuous crossings for adding special signal lamp
Control, and special signal lamp empties on-board and off-board delay time at stop of the duration threshold value gc equal to bus on current road segment；
Step 3：When original signal lamp at current crossing is green light, it whether there is public transport in the detection farthest detecting distance L of bus
Vehicle, and if it exists, then enter step 4；Otherwise, step 5 is jumped to；Wherein, L=G*v；V is bus running speed；
Step 4：Special signal lamp keeps red light phase, current crossing is driven into the bus in all public transport fleets, according to original
The current duration of straight trip of signal lamp and all public transport fleets calculate the residue of original signal lamp by the time difference at current crossing
Transit time Gl；If Gl≤gc, keep special signal lamp red light constant, return step 3；If Gl>Gc then enters step 5；
Step 5：Special signal lamp becomes green light, and the public vehicles for allowing to keep straight on are travelled by means of public transportation lane；Wherein, special signal
The long green light time of lamp is g, g=Gl-gc, becomes red light after special signal lamp green light.
2. a kind of public transportation lane resource dynamic sharing method based on Internet of Things as described in claim 1, which is characterized in that
In the step 1, the condition for screening the public transportation lane that can dynamically share in advance is：
In same time period, ηs≥n*ηb, ηb<τ；Wherein ηsFor social lane space occupancy；ηbIt is accounted for for bus zone space
There is rate；N is to judge ratio, known to value；τ is judgment threshold, known to value.
3. a kind of public transportation lane resource dynamic sharing method based on Internet of Things as described in claim 1, which is characterized in that
In the step 2, the calculating process of the on-board and off-board delay time at stop of bus is on current road segment：
Predict the volume of the flow of passengers of getting off of the get on the bus volume of the flow of passengers and the current road segment of current road segment, and flat according to preset passenger loading
Equal used time and passenger getting off car are averaged the used time, to calculate separately the upper objective delay time at stop mean value of bus and lower visitor's delay of bus
Time average；
The maximum value in both the upper objective delay time at stop mean value of bus and the lower objective delay time at stop mean value of bus is taken, as working as
The on-board and off-board delay time at stop of bus on preceding section.
4. a kind of public transportation lane resource dynamic sharing method based on Internet of Things as claimed in claim 3, which is characterized in that
The process of the volume of the flow of passengers of getting off for predicting the get on the bus volume of the flow of passengers and the current road segment of current road segment is：
Obtain the historical data of the passenger flow of getting on or off the bus of current road segment, and according to working day, nonworkdays, festivals or holidays, weather it is good,
This five dimensions of bad weather carry out type division, construct sample set and test set；
According to the sample constructed and and test set, be utilized respectively time series models and improved BP neural networks model obtain phase
The passenger flow information of getting on or off the bus answered, then obtain by weighted calculation the passenger flow of getting off of the get on the bus volume of the flow of passengers and the current road segment of current road segment
The predicted value of amount.
5. a kind of public transportation lane resource dynamic sharing method based on Internet of Things as claimed in claim 4, which is characterized in that
During weighted calculation, the value of weight is determined according to type of site, and type of site includes peak website and Fei Gao
Peak website；Peak website is 3 times or more of the website that peak traffic is the flat peak volume of the flow of passengers.
6. a kind of public transportation lane resource dynamic shared system based on Internet of Things, which is characterized in that including：
Special signal lamp is set at the crossing of the public transportation lane filtered out, and whether be used to indicate public vehicles can be into
Enter public transportation lane traveling；And
Traffic controller is respectively connected with special signal lamp and original signal lamp, is used to timing and is coordinated line traffic control original signal lamp
Signal timing dial；And
Resource dynamic shared processor, is connected with traffic controller, and is configured as executing following steps：
The public transportation lane that can dynamically share is screened in advance, when setting crossing original signal lamp and special signal lamp are at red light
For no through traffic state, green light is prevailing state；Set a length of G when signal period and the current straight trip of crossing original signal lamp；Specially
A length of g when with the passage of signal lamp, it is gc that special signal lamp, which empties duration threshold value, wherein gc≤g≤G；Special signal lamp empties
Duration threshold value gc is equal to the on-board and off-board delay time at stop of bus on current road segment；
When original signal lamp at current crossing is green light, it whether there is bus in the detection farthest detecting distance L of bus, if depositing
Then entering special signal lamp and keeping red light phase, is driving into current crossing to the bus in all public transport fleets, believed according to original
The residue that the current duration of straight trip of signal lamp and all public transport fleets calculate original signal lamp by the time difference at current crossing is logical
Row time Gl；If Gl≤gc, keeps special signal lamp red light constant, continue to test and whether deposited in the farthest detecting distance L of bus
In bus；If Gl>Gc, then special signal lamp becomes green light, and the public vehicles for allowing to keep straight on are travelled by means of public transportation lane；Its
In, the long green light time of special signal lamp is g, g=Gl-gc, becomes red light after special signal lamp green light；Wherein, L=G*v；
V is bus running speed；
Bus is not present in the farthest detecting distance L of bus if detecting, special signal lamp becomes green light, allows the society to keep straight on
Meeting vehicle is travelled by means of public transportation lane；Wherein, the long green light time of special signal lamp is g, g=Gl-gc, special signal lamp green light knot
Become red light after beam.
7. a kind of public transportation lane resource dynamic shared system based on Internet of Things as claimed in claim 6, which is characterized in that
In the resource dynamic shared processor, the condition for screening the public transportation lane that can dynamically share in advance is：
In same time period, ηs≥n*ηb, ηb<τ；Wherein ηsFor social lane space occupancy；ηbIt is accounted for for bus zone space
There is rate；N is to judge ratio, known to value；τ is judgment threshold, known to value.
8. a kind of public transportation lane resource dynamic shared system based on Internet of Things as claimed in claim 6, which is characterized in that
In the resource dynamic shared processor, the calculating process of the on-board and off-board delay time at stop of bus is on current road segment：
Predict the volume of the flow of passengers of getting off of the get on the bus volume of the flow of passengers and the current road segment of current road segment, and flat according to preset passenger loading
Equal used time and passenger getting off car are averaged the used time, to calculate separately the upper objective delay time at stop mean value of bus and lower visitor's delay of bus
Time average；
The maximum value in both the upper objective delay time at stop mean value of bus and the lower objective delay time at stop mean value of bus is taken, as working as
The on-board and off-board delay time at stop of bus on preceding section.
9. a kind of public transportation lane resource dynamic shared system based on Internet of Things as claimed in claim 8, which is characterized in that
In the resource dynamic shared processor, the mistake of the volume of the flow of passengers of getting off of the get on the bus volume of the flow of passengers and the current road segment of current road segment is predicted
Cheng Wei：
Obtain the historical data of the passenger flow of getting on or off the bus of current road segment, and according to working day, nonworkdays, festivals or holidays, weather it is good,
This five dimensions of bad weather carry out type division, construct sample set and test set；
According to the sample constructed and and test set, be utilized respectively time series models and improved BP neural networks model obtain phase
The passenger flow information of getting on or off the bus answered, then obtain by weighted calculation the passenger flow of getting off of the get on the bus volume of the flow of passengers and the current road segment of current road segment
The predicted value of amount.
10. a kind of public transportation lane resource dynamic shared system based on Internet of Things as claimed in claim 9, feature exist
In in the resource dynamic shared processor, during weighted calculation, the value of weight carries out true according to type of site
Fixed, type of site includes peak website and non-peak website；Peak website is 3 times or more that peak traffic is the flat peak volume of the flow of passengers
Website.
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