CN104183117B - The control method of bus departure - Google Patents

Abstract

Bus departure control method, including: utilize mobile satellite location equipment to gather the moment T of bus arrival_ij, comparison timetable calculates late time difference Δ T_ij=| t_ij‑T_ij|, set up Δ T_ijSet R；Wherein, T_ijRepresent the time of i-th class of bus arrival jth website, t in reality_ijRepresent that i-th class of bus of regulation in public transport timetable arrives the time of jth website, Δ T_ijRepresent i-th class of bus late time difference at jth website；Statistical data analysis set R, carries out Time segments division according to the congestion level of road to the bus departure time；Set up departure interval model, within the period, repartition the departure interval；Temporal information T that step 1 is collected_ijSubstitute into and model calculates the departure interval to formulate departure plan.

Description

The control method of bus departure

Technical field

The invention belongs to field of traffic control, particularly relate to a kind of improve dispatching a car of public transport punctuality rate Interval optimal control method.

Background technology

Public transit system is that its service quality is increasingly by people towards popular social service system Concern.Quickening along with people's rhythm of life, it is ensured that the punctuality rate of bus just seems meaning Justice is great.And existing can guarantee that the city line proportion that public transport arrives at a station on schedule is little, this is not Only can destroy normal driving order and also have influence on the trip of passenger.

At present, the countermeasure improving public transport percent of punctuality mainly has that public transport right of way is preferential, traffic signal are excellent Elder generation and set up fast public traffic system.But according to traffic department's introduction, traffic congestion is just to affect public transport The main cause of some rate.In recent years, owing to the private car increased severely has tied up limited path resource, Public transport operation speed reduces further, and the circuit average turn-round rate of rolling stock declines, and difficulty on schedule of driving a vehicle strengthens. So for more common bus, when the traffic in the face of extremely blocking up, public Friendship is preferential, traffic signal preferentially do not ensure that its punctuality rate.It is thus desirable to one is for poor The method improving public transport punctuality rate of road situation.

Summary of the invention

The problems referred to above of present invention prior art to be overcome, propose a kind of public transport punctuality rate that improves Departure interval optimal control method.

The inventive method is mainly for the jam situation of road peak period, by suitably improving Departure frequency, and adjust the departure interval according to the change of different periods congestion, formulate more Reasonably departure plan.

For reaching above-mentioned purpose, the technical solution used in the present invention is as follows:

Bus departure control method, including:

Step 1. utilizes mobile satellite location equipment to gather the moment T of bus arrival_ij, compare timetable Calculate late time difference Δ T_ij=| t_ij-T_ij|, set up Δ T_ijSet R；Wherein, T_ijRepresent reality In i-th class of bus arrive time of jth website, t_ijRepresent in public transport timetable and specify I-th class of bus arrive time of jth website, Δ T_ijRepresent that i-th class of bus is in jth The late time difference of website；

Step 2. statistical data analysis set R, during according to the congestion level of road to bus departure Between carry out Time segments division；

Step 3. sets up departure interval model, repartitions the departure interval within the period；

Temporal information T that step 1 is collected by step 4._ijSubstitute into model calculates the departure interval with Formulate departure plan.

Wherein, the statistical data analysis set R described in step 2, according to the congestion level of road The bus departure time is carried out Time segments division, particularly as follows:

2.1 useStating the important parameter of road traffic congestion degree, m represents this Circuit bus station sum, Δ T_iRepresent that i-th class of bus is total in the late time difference of all websites With, its value shows that the most greatly road situation is the poorest；

2.2 according to order of dispatching a car, successively by Δ T₂、ΔT₃、ΔT₄... with Δ T₁Make comparisons, will meet |ΔT_i-ΔT₁|≤t with Δ T₁It is divided into a set (Δ T₁,ΔT₂,…ΔT_d), threshold value t is to divide collection The index of conjunction scope, the difference size element less than t belongs to a set, Δ T_dIt it is first The end element of set, d is the element number of set 1；Then with the end element in set it is Comparison other in kind divides next set, as with Δ T_dSecond is divided for comparison other Individual set；Repeat said process, until being some set by all numerical division R_c=(Δ T_l,ΔT_l+1,…ΔT_l+q-1) wherein R_cRepresent the c set, Δ T_lFor set the first element, ΔT_l+q-1For the last bit element of set, l is the first element train number of set, and q is the element of set Number；

2.3 with corresponding to Δ T₁And the T at the time of departure of the public transport train number of each set end element₁、 T_d、T_l、T_l+q-1As the separation of division period, thus obtain some [T that dispatches a car the period_l,T_l+q-1]。

Wherein, described in step 3, set up departure interval model, repartition within the period and dispatch a car Interval, particularly as follows:

3.1 according to timetable, calculates ideally, the head office of each train number in the same period Journey time sumt_imLast is arrived in timetable i-th class of bus The time of individual website, n represents the sum of dispatching a car in this period；

3.2 according to the actual information gathered, and calculates under practical situation, and in the same period, each train number is total Journey time summationT_imLast is arrived in reality i-th class of bus The actual time of individual website；

3.3 definition K_sEncrypt coefficient for departure frequency, characterize the raising degree to departure frequency, Then $K_s=\frac{T_{\mathrm{ideal}}}{T_{\mathrm{real}}};$

The departing time interval of 3.4 optimizations being calculated this period

The invention have the advantage that the defect that compensate for improving public transport punctuality rate conventional method, can have The late phenomenon of public transport that power reply traffic jam causes；To actual public transport operation data statistics meter Calculating the personal experience that instead of dispatcher, more science is accurate；To divide the time of departure, Arranging an order according to class and grade at times, the formulation making departure time-table is more reasonable, improves public affairs to a great extent Hand over service level.

Accompanying drawing explanation

Fig. 1 is the FB(flow block) of the inventive method.

Fig. 2 is the side that the congestion level according to road carries out Time segments division to the bus departure time Method schematic diagram.

Fig. 3 is the exemplary flow block diagram setting up departure interval model.

Fig. 4 is the departure interval schematic diagram of different periods.

Detailed description of the invention

Referring to the drawings:

Bus departure control method, including:

1. utilize mobile satellite location equipment to gather the moment T of bus arrival_ij, comparison timetable calculates Late time difference Δ T_ij=| t_ij-T_ij|, set up Δ T_ijSet R.Wherein, T_ijRepresent in reality i-th Class's bus arrives the time of jth website, t_ijRepresent i-th specified in public transport timetable Class's bus arrives the time of jth website, Δ T_ijRepresent that i-th class of bus is at jth website Late time difference.

2. statistical data analysis set R, enters the bus departure time according to the congestion level of road Row Time segments division.

3. set up departure interval model, within the period, repartition the departure interval.

4. temporal information T step 1 collected_ijSubstitute into and model calculates the departure interval to formulate Departure plan.

Wherein, the statistical data analysis set R described in step 2, according to the congestion level of road The bus departure time is carried out Time segments division, particularly as follows:

(1), in this patent, useState the important ginseng of road traffic congestion degree Number, m represents this circuit bus station sum, Δ T_iRepresent that i-th class of bus is at all websites Late time difference summation, its value shows that the most greatly road situation is the poorest.

(2) according to order of dispatching a car, successively by Δ T₂、ΔT₃、ΔT₄... with Δ T₁Make comparisons, will be full Foot | Δ T_i-ΔT₁|≤t with Δ T₁It is divided into a set (Δ T₁,ΔT₂,…ΔT_d), threshold value t is to divide The index of range of convergence, the difference size element less than t belongs to a set, Δ T_dIt is first The end element of individual set, d is the element number of set 1.Then with the end element in set Next set is in kind divided, as with Δ T for comparison other_dThe is divided for comparison other Two set.Repeat said process, until being some set by all numerical division R_c=(Δ T_l,ΔT_l+1,…ΔT_l+q-1) wherein R_cRepresent the c set, Δ T_lFor set the first element, ΔT_l+q-1For the last bit element of set, l is the first element train number of set, and q is the element of set Number.

(3) with corresponding to Δ T₁And the T at the time of departure of the public transport train number of each set end element₁、 T_d、T_l、T_l+q-1As the separation of division period, thus obtain some [T that dispatches a car the period_l,T_l+q-1]。

Wherein, described in step 3, set up departure interval model, repartition within the period and dispatch a car Interval, particularly as follows:

(1) according to timetable, calculating ideally, in the same period, each train number is total Journey time sumt_imArrive last in timetable i-th class of bus The time of one website, n represents the sum of dispatching a car in this period.

(2) according to the actual information gathered, calculate under practical situation, each train number in the same period Total travel time summationT_imArrive last in reality i-th class of bus The actual time of one website.

(3) definition K_sEncrypt coefficient for departure frequency, characterize the raising degree to departure frequency, Then $K_s=\frac{T_{\mathrm{ideal}}}{T_{\mathrm{real}}}.$

(4) departing time interval of the optimization of this period it is calculated

The present invention can tackle the late phenomenon of public transport that traffic jam causes effectively；To actual public transport It is accurate that service data statistical computation instead of the personal experience of dispatcher, more science；To send out The car time divides, and arranges an order according to class and grade at times, and the formulation making departure time-table is more reasonable, very Bus service level is improve in big degree.

Content described in this specification embodiment is only the row of the way of realization to inventive concept Lifting, protection scope of the present invention is not construed as being only limitted to the concrete shape that embodiment is stated Formula, protection scope of the present invention is also and in those skilled in the art according to present inventive concept institute energy The equivalent technologies means enough expected.

Claims (1)

1. bus departure control method, including:

Step 1. utilizes mobile satellite location equipment to gather the moment T of bus arrival_ij, compare timetable Calculate late time difference Δ T_ij=| t_ij-T_ij|, set up Δ T_ijSet R；Wherein, T_ijRepresent reality In i-th class of bus arrive time of jth website, t_ijRepresent in public transport timetable and specify I-th class of bus arrive time of jth website, Δ T_ijRepresent that i-th class of bus is in jth The late time difference of website；

Step 2. statistical data analysis set R, during according to the congestion level of road to bus departure Between carry out Time segments division；Statistical data analysis set R described in step 2, gathering around according to road Stifled degree carries out Time segments division to the bus departure time, particularly as follows:

2.1 useStating the important parameter of road traffic congestion degree, m represents line Bus station, road sum, Δ T_iRepresent i-th class of bus late time difference summation at all websites, Its value shows that the most greatly road situation is the poorest；

2.2 according to order of dispatching a car, successively by Δ T₂、ΔT₃、ΔT₄... with Δ T₁Make comparisons, will meet |ΔT_i-ΔT₁|≤t with Δ T₁It is divided into a set (Δ T₁, Δ T₂... Δ T_d), threshold value t is to divide set The index of scope, the difference size element less than t belongs to a set, Δ T_dIt is first collection The end element closed, d is setElement number；Then with Δ T_dThe is divided for comparison other Two set；Repeat said process, until being some set by all numerical divisionWherein R_cRepresent the c set,For set the first element,Last bit for set is plain,For the first element train number of set, q is the element of set Number；

2.3 with corresponding to Δ T₁And the T at the time of departure of the public transport train number of each set end element₁、 T_d、As the separation of division period, thus obtain some dispatching a car the period

Step 3. sets up departure interval model, repartitions the departure interval within the period；Step 3 Described sets up departure interval model, repartitions the departure interval within the period, particularly as follows:

3.1 according to timetable, calculates ideally, the head office of each train number in the same period Journey time sumt_imLast is arrived in timetable i-th class of bus The time of website, n represents the sum of dispatching a car in this period；

3.2 according to the actual information gathered, and calculates under practical situation, and in the same period, each train number is total Journey time summationT_imLast is arrived in reality i-th class of bus The actual time of website；

3.3 definition K_sEncrypt coefficient for departure frequency, characterize the raising degree to departure frequency, then

The departing time interval of 3.4 optimizations being calculated this period

Temporal information T that step 1 is collected by step 4._ijSubstitute into model calculates the departure interval with Formulate departure plan.