CN105551272A - Vehicle signal control method based on Big Dipper foundation enhancement equipment - Google Patents
Vehicle signal control method based on Big Dipper foundation enhancement equipment Download PDFInfo
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- G08G1/00—Traffic control systems for road vehicles
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Abstract
The invention discloses a vehicle signal control method based on Big Dipper positioning. The method comprises the following steps of step 101) collecting vehicle satellite positioning data based on Big Dipper and vehicle passenger data based on an IC card; step102) defining several states and a logical determination principle; step103) based on the defined states and the principle and according to the collected data, controlling a vehicle signal. The step 101 further comprises the following steps of step 101-1) based on the satellite positioning data, collecting and acquiring meter level position information of the vehicle; and step 101-2) through IC card equipment and a vehicle-mounted terminal, acquiring passenger quantity data in the vehicle. Through multi-source data input and an advanced signal control algorithm, whole public transport line operation optimization control and accurate control are reached and reliability of a whole control system is increased. Purposes of balancing a line passenger traffic volume and increasing line operation efficiency are achieved.
Description
Technical field
The present invention relates to a kind of vehicle signal control method, be specifically related to a kind of vehicle signal control method strengthening equipment based on Big Dipper ground.
Background technology
Along with socioeconomic development, the demand of people to trip is increasing.Meanwhile, the convenience of trip, comfortableness become the important criterion that people select trip instrument.Traditional trip mode mainly comprises, private car trip, bus trip, cycling trip, walking etc.In numerous trip mode, private car trip mode is the most comfortable, convenient, but causes the serious urban issues such as traffic congestion, environmental pollution to depending on unduly of going on a journey of private car along with people.In order to solve this urban issues, public transport starts development, and advanced public transportation system starts to occur.
Public transport, as the maximum vehicles of city carrying capacity, has the plurality of advantages such as convenient and swift, with low cost, safety and environmental protection.But simultaneous problems have impact on the efficiency of operation of public transport.The capacity deployment being wherein public transit vehicle is the most significantly uneven, causes the daily problems of operation such as bunching, large-spacing.Public bus network operation is abnormal, can cause the maldistribution of circuit Vehicular occupant, thus cause the efficiency of operation of whole piece circuit low.
In order to solve the problem of mass transit volume maldistribution, usually corresponding control measure can be taked to bus operation circuit vehicle.Such as integrative design intersection, first method, by settling roadside device to detect the traveling-position of public transit vehicle at crossing, vehicle traveling-position is reported to signal control device by roadside device, and control device implements signal priority according to each phase place vehicle condition in crossing to public transit vehicle.Second method detects public transit vehicle position by satellite positioning device, and position data is passed to signal control device and carry out signal priority control.
In such scheme, signal control device carries out priority acccess control by vehicle position information to vehicle.Deposit problem both ways, be first the insufficient problems of data, be embodied in several aspect:
1. lack passengers quantity data in public transit vehicle, because lack passenger data, cause signal control device to can not determine the load factor of public transit vehicle, thus signal control can not be carried out targetedly.
2. lack the location information data between circuit vehicle, because lack the service data of vehicle between circuit, cause signal control device not know the position relationship of fore-aft vehicle, can not truly have and carry out signal control targetedly.
3. public transit vehicle real time position data is not enough, one point data poor reliability, cannot judge public transit vehicle pass through road measuring device after running status, likely cause erroneous judgement to signal control device.
4. lack high precision vehicle position data not have, owing to lacking high precision position data, thus the operation track of vehicle cannot be judged, thus cannot judge that the signal phase corresponding with track causes erroneous judgement accurately.
Above-mentioned 4 mainly because the data of input signal control device do not possess or insufficient, cause the reliability of whole control system to reduce.
Summary of the invention
The object of the invention is to, in order to overcome the problems referred to above, the invention provides a kind of vehicle signal control method strengthening equipment based on Big Dipper ground.
To achieve these goals, the invention provides a kind of vehicle signal control method strengthening equipment based on Big Dipper ground, described method comprises: step 101) gather the vehicle satellite locator data based on the Big Dipper and the Vehicular occupant data based on IC-card; Step 102) define some states and Logic judgment principle; Step 103) according to the state defined and principle, then according to the data gathered, signals of vehicles is controlled.
Optionally, above-mentioned steps 101) comprise further: meter level positional information step 101-1) obtaining vehicle based on satellite location data collection; Step 101-2) obtain passenger inside the vehicle's incremental data by IC-card equipment and car-mounted terminal.
Above-mentioned steps 102) comprise further:
Step 102-1) to define current location vehicle be A car, after Current vehicle, vehicle is B car;
The departure interval of definition wires road vehicles is ε minute, and the time headway of A car and B car is defined as t (AB);
Step 102-2) define following several state residing for vehicle A:
State S1, t (AB) > ε namely under current state the time headway of A car and B car be greater than the departure interval ε of two cars;
State S2, t (AB)≤ε namely under current state the time headway of A car and B car be less than or equal to the departure interval ε of two cars;
Step 102-3) vehicle that defines current location is A car, after Current vehicle, vehicle is B car and synchronization, and the handling capacity of passengers of A car is P (A), and the handling capacity of passengers of B car is P (B);
Step 102-4) several states of defining residing for vehicle A passenger carrying capacity are as follows:
State S3, when P (A) > P (B) namely under current state the handling capacity of passengers of A car be greater than the handling capacity of passengers of B car;
State S4, when P (A)≤P (B) namely under current state the handling capacity of passengers of A car be less than the handling capacity of passengers of B car;
Step 102-5) signal control device state residing for the vehicle A that is defined as follows:
State S5, signal control device only receives the signal priority request that vehicle A sends;
State S6, signal control device receives the request signal that vehicle A sends, and receives the signal priority request from other phase place vehicle simultaneously;
Step 102-6) determine the track state of vehicle A at road, namely determine that track residing for vehicle A is for turning left, keep straight on or turning right;
State S7, track residing for vehicle A is Through Lane;
State S8, track residing for vehicle A is right-turn lane;
State S9, track residing for vehicle A is left turn lane;
Step 102-7) to define the signalized crossing signal period residing for vehicle A be T, signalized intersections craspedodrome Phase Duration λ residing for vehicle A
keep straight on, left turn phase duration λ
turn left, right-hand rotation Phase Duration is λ
turn right;
Wherein, λ
keep straight on+ λ
turn left+ λ
turn right=T;
Step 102-8) setting signal optimization time θ, wherein θ < T;
Step 102-9) the signal optimizing strategy that is defined as follows:
Strategy G1, the basis of original signal phase time increases the signal optimizing time forms new intersection signal phase time;
Strategy G2, on the basis of original signal phase time, the subtraction signal optimization time forms new intersection signal phase time;
Strategy G3, maintain the signalized intersections present situation cycle residing for vehicle A and Phase Duration constant.
Above-mentioned steps 103) comprise further:
Step 103-1) determine the residing track state of vehicle A, described track state comprises S7, S8 and S9 tri-states;
Step 103-2) meet state S2, S4 and S5, then implementation strategy G2 when the state that vehicle is current simultaneously;
Step 103-3) meet state S1, S3 and S5, then implementation strategy G1 when the state that vehicle is current simultaneously;
Step 103-4) meet state S2, S4 and S, 6, then implementation strategy G3 when the state that vehicle is current simultaneously;
Step 103-5) meet state S1, S3 and S6, then implementation strategy G3 when the state that vehicle is current simultaneously;
Step 103-6) the equal implementation strategy G3 of other state.
Compared with prior art, technical advantage of the present invention is: (1) makes public transit vehicle signal priority more scientific and reasonable.(2) improve the efficiency of operation of public bus network.(3) improve the reliability of public transit vehicle signal priority.Cross multi-source data input and advanced signal control algolithm, reach and whole public bus network operation optimization is controlled, precisely controlled, improve the reliability of whole control system.Thus reach balanced circuit passenger traffic amount, improve the object of circuit efficiency of operation.That is, the present invention is by multi-source data input and advanced signal control algolithm, reaches and controls whole public bus network operation optimization, precisely control, improve the reliability of whole control system.Thus reach balanced circuit passenger traffic amount, improve the object of circuit efficiency of operation.
Accompanying drawing explanation
Fig. 1 is the process flow diagram of vehicle signal control method of the present invention.
Embodiment
Below in conjunction with drawings and Examples, the present invention is further described.
Embodiment of the present invention improve the deficiency of aforementioned conventional embodiment, the perfect correlation module of control system.Main modular comprise data acquisition unit module, control algolithm module, scheme implementation module.Related data needed for data acquisition unit module primary responsibility acquisition system, mainly comprises based on the vehicle satellite locator data of Big Dipper ground enhancing, the Vehicular occupant data based on IC-card.Control algolithm module primary responsibility carries out Logic judgment, for the enforcement of prioritization scheme provides foundation, and according to obtained data and Logic judgment rule, provides corresponding control algolithm.Scheme implementation module is mainly implemented Current protocols.As shown in Figure 1, the basic step of the inventive method is as follows:
Data acquisition module:
Step 1, strengthens the vehicle satellite position data collecting of equipment based on Big Dipper ground, by being arranged on satellite positioning-terminal and the trackside location enhancing equipment of vehicle, obtain the meter level positional information of vehicle.Wherein, described Big Dipper ground strengthens equipment and belongs to existing equipment, does not repeat at this.
Step 2, passenger data collection, by being arranged on satellite positioning-terminal and the trackside location enhancing equipment of vehicle, obtains the meter level positional information of vehicle.Passenger inside the vehicle's incremental data is obtained by IC-card equipment and car-mounted terminal.
Control algolithm module:
Step 3, definition current location vehicle is A car, and after Current vehicle, vehicle is B car.The departure interval of circuit vehicle is ε minute.The time headway of A car and B car is defined as t (AB).
Step 4, several states of definition residing for vehicle A position are as follows:
State S1, t (AB) > ε namely under current state the time headway of A car and B car be greater than the departure interval ε of two cars.
State S2, t (AB)≤ε namely under current state the time headway of A car and B car be less than or equal to the departure interval ε of two cars.
Step 5, definition current location vehicle is A car, and after Current vehicle, vehicle is B car.Synchronization, the handling capacity of passengers of A car is P (A), and the handling capacity of passengers of B car is P (B).
Step 6, several states residing for definition vehicle A passenger carrying capacity are as follows:
State S3, P (A) > P (B) namely under current state the handling capacity of passengers of A car be greater than the handling capacity of passengers of B car.
State S4, P (A)≤P (B) namely under current state the handling capacity of passengers of A car be less than the handling capacity of passengers of B car.
Step 7, signal control device state residing for definition vehicle A
State S5, signal control device only receives the signal priority request that vehicle A sends.
State S6, signal control device receives the request signal that vehicle A sends, and receives the signal priority request from other phase place vehicle simultaneously.
Step 8: determine the track state of vehicle A at road.Namely strengthen equipment according to on-vehicle positioning terminal and trackside ground, determine that track residing for vehicle A is for turning left, keep straight on or turning right.
State S7, track residing for vehicle A is Through Lane.
State S8, track residing for vehicle A is right-turn lane.
State S9, track residing for vehicle A is left turn lane.
Step 9, residing for definition vehicle A, the signalized crossing signal period is T.Signalized intersections craspedodrome Phase Duration λ residing for vehicle A
keep straight on, left turn phase duration λ
turn left, right-hand rotation Phase Duration is λ
turn right.Wherein
λ
keep straight on+ λ
turn left+ λ
turn right=T.
Step 10, it is θ that definition signal optimizes the time, wherein θ < T.
Step 11, definition signal control device optimisation strategy.
Strategy G1, λ+θ, the basis of original signal phase time increases the signal optimizing time forms new intersection signal phase time.
Strategy G2, λ-θ, on the basis of original signal phase time, the subtraction signal optimization time forms new intersection signal phase time.
Strategy G3, maintain the signalized intersections present situation cycle residing for vehicle A and Phase Duration constant.
Scheme implementation module:
Step 12, determines that the residing track state of vehicle A is any one in S7, S8, S9.
Step 13, meets state S2, S4, S5, implementation strategy G2.
Step 14, meets state S1, S3, S5, implementation strategy G1.
Step 15, meets state S2, S4, S, 6, implementation strategy G3.
Step 16, meets state S1, S3, S6, implementation strategy G3.
Step 17, the equal implementation strategy G3 of other state.
The foregoing is only a specific embodiment of the present invention; be not intended to limit protection scope of the present invention; those skilled in the art is to be understood that; under the prerequisite not departing from inventive principle; technical scheme of the present invention is modified or equivalent replacement; do not depart from the spirit and scope of technical solution of the present invention, it all should be encompassed in protection scope of the present invention.
Claims (4)
1. strengthen a vehicle signal control method for equipment based on Big Dipper ground, described method comprises:
Step 101) gather based on the vehicle satellite locator data of Big Dipper ground enhancing and the Vehicular occupant data based on IC-card;
Step 102) define some states and Logic judgment principle;
Step 103) according to the state defined and principle, then according to the data gathered, signals of vehicles is controlled.
2. the vehicle signal control method strengthening equipment based on Big Dipper ground according to claim 1, is characterized in that, described step 101) comprise further:
Step 101-1) obtain the meter level positional information of vehicle based on satellite location data collection;
Step 101-2) obtain passenger inside the vehicle's incremental data by IC-card equipment and car-mounted terminal.
3. the vehicle signal control method strengthening equipment based on Big Dipper ground according to claim 1, is characterized in that, described step 102) comprise further:
Step 102-1) to define current location vehicle be A car, after Current vehicle, vehicle is B car;
The departure interval of definition wires road vehicles is ε minute, and the time headway of A car and B car is defined as t (AB);
Step 102-2) define following several state residing for vehicle A:
State S1, t (AB) > ε namely under current state the time headway of A car and B car be greater than the departure interval ε of two cars;
State S2, t (AB)≤ε namely under current state the time headway of A car and B car be less than or equal to the departure interval ε of two cars;
Step 102-3) vehicle that defines current location is A car, after Current vehicle, vehicle is B car and synchronization, and the handling capacity of passengers of A car is P (A), and the handling capacity of passengers of B car is P (B);
Step 102-4) several states of defining residing for vehicle A passenger carrying capacity are as follows:
State S3, when P (A) > P (B) namely under current state the handling capacity of passengers of A car be greater than the handling capacity of passengers of B car;
State S4, when P (A)≤P (B) namely under current state the handling capacity of passengers of A car be less than the handling capacity of passengers of B car;
Step 102-5) signal control device state residing for the vehicle A that is defined as follows:
State S5, signal control device only receives the signal priority request that vehicle A sends;
State S6, signal control device receives the request signal that vehicle A sends, and receives the signal priority request from other phase place vehicle simultaneously;
Step 102-6) determine the track state of vehicle A at road, namely determine that track residing for vehicle A is for turning left, keep straight on or turning right;
State S7, track residing for vehicle A is Through Lane;
State S8, track residing for vehicle A is right-turn lane;
State S9, track residing for vehicle A is left turn lane;
Step 102-7) to define the signalized crossing signal period residing for vehicle A be T, signalized intersections craspedodrome Phase Duration λ residing for vehicle A
keep straight on, left turn phase duration λ
turn left, right-hand rotation Phase Duration is λ
turn right;
Wherein, λ
keep straight on+ λ
turn left+ λ
turn right=T;
Step 102-8) setting signal optimization time θ, wherein θ < T;
Step 102-9) the signal optimizing strategy that is defined as follows:
Strategy G1, the basis of original signal phase time increases the signal optimizing time forms new intersection signal phase time;
Strategy G2, on the basis of original signal phase time, the subtraction signal optimization time forms new intersection signal phase time;
Strategy G3, maintain the signalized intersections present situation cycle residing for vehicle A and Phase Duration constant.
4. the vehicle signal control method strengthening equipment based on Big Dipper ground according to claim 3, is characterized in that, described step 103) comprise further:
Step 103-1) determine the residing track state of vehicle A, described track state comprises S7, S8 and S9 tri-states;
Step 103-2) meet state S2, S4 and S5, then implementation strategy G2 when the state that vehicle is current simultaneously;
Step 103-3) meet state S1, S3 and S5, then implementation strategy G1 when the state that vehicle is current simultaneously;
Step 103-4) meet state S2, S4 and S, 6, then implementation strategy G3 when the state that vehicle is current simultaneously;
Step 103-5) meet state S1, S3 and S6, then implementation strategy G3 when the state that vehicle is current simultaneously;
Step 103-6) the equal implementation strategy G3 of other state.
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| CN201510994136.3A CN105551272B (en) | 2015-12-25 | 2015-12-25 | It is a kind of to strengthen the vehicle signal control method of equipment based on Big Dipper ground |
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| CN201510994136.3A CN105551272B (en) | 2015-12-25 | 2015-12-25 | It is a kind of to strengthen the vehicle signal control method of equipment based on Big Dipper ground |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101789175A (en) * | 2010-01-08 | 2010-07-28 | 北京工业大学 | Public transportation multi-route static coordination and dispatching method |
| CN103268707A (en) * | 2013-04-26 | 2013-08-28 | 东南大学 | Signal regulating method for pedestrian crossing road section of bus prior passage |
| WO2014194819A1 (en) * | 2013-06-05 | 2014-12-11 | Yuan Yiqing | Public transport electronic system |
| CN104485006A (en) * | 2014-12-17 | 2015-04-01 | 天津易华录信息技术有限公司 | Bus signal priority system based on passenger number and control method |
| CN204348076U (en) * | 2014-12-17 | 2015-05-20 | 天津易华录信息技术有限公司 | A kind of bus signals priority system based on vehicle-mounted number |
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2015
- 2015-12-25 CN CN201510994136.3A patent/CN105551272B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101789175A (en) * | 2010-01-08 | 2010-07-28 | 北京工业大学 | Public transportation multi-route static coordination and dispatching method |
| CN103268707A (en) * | 2013-04-26 | 2013-08-28 | 东南大学 | Signal regulating method for pedestrian crossing road section of bus prior passage |
| WO2014194819A1 (en) * | 2013-06-05 | 2014-12-11 | Yuan Yiqing | Public transport electronic system |
| CN104485006A (en) * | 2014-12-17 | 2015-04-01 | 天津易华录信息技术有限公司 | Bus signal priority system based on passenger number and control method |
| CN204348076U (en) * | 2014-12-17 | 2015-05-20 | 天津易华录信息技术有限公司 | A kind of bus signals priority system based on vehicle-mounted number |
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