CN105185133A - Bus rapid transit signal control device, control system and control method - Google Patents
Bus rapid transit signal control device, control system and control method Download PDFInfo
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- CN105185133A CN105185133A CN201510431408.9A CN201510431408A CN105185133A CN 105185133 A CN105185133 A CN 105185133A CN 201510431408 A CN201510431408 A CN 201510431408A CN 105185133 A CN105185133 A CN 105185133A
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Abstract
The invention belongs to the traffic signal control technical field and relates to a bus rapid transit signal control device, control system and control method. The bus rapid transit signal control device of the invention includes a first information transmitter, a bus rapid transit signal control module and a controller; the first information transmitter and the controller are both electrically connected with the bus rapid transit signal control module; the first information transmitter receives the state information of external bus rapid transit and transmits the state information to the a bus rapid transit signal control module; the bus rapid transit signal control module processes the state information and obtains signal precedence instructions; the controller receives the signal instructions; the controller adjusts signal control timing; the controller externally controls signal lamps in a manner that green time is prolonged or red time is shortened, so that bus rapid transit can directly pass through an intersection without stop or red time waiting time of the bus rapid transit can be shortened. The bus rapid transit signal control device, control system and control method of the invention have the advantages of real-time and accurate control, accurate and reliable detection surfaces, simple and reliable signal transmission and high traffic efficiency.
Description
Technical field
The invention belongs to technical field of traffic control, particularly relate to a kind of bus rapid transit opertaing device, control system and control method.
Background technology
For solving vehicle that city increases day by day, passenger, contradiction between pedestrian and limited traffic resource, develop public transport and become the important means of solution urban transport problems, particularly each big city all preferential, greatly develop bus rapid transit (BusRapidTransit is called for short BRT), because BRT possesses good hardware foundation (jumbo passenger carrying capacity), good lane priority power condition, the transportation service of quickness and high efficiency therefore can be provided.We know, it is the most critical key element that bus rapid transit runs fast that bus rapid transit enjoys lane priority power condition, particularly in peak period, passenger flow is very large, because urban road crossing signal controls, vehicle travels the inexactness controlled, can cause occurring bus rapid transit " bunching ", " large-spacing " and the red light such as many, the situation generation that travelling speed is not smooth, these situations are all unfavorable for the feature of the fast passing of bus rapid transit, so how accurate, the problem that efficient solution signal priority controls becomes and improves bus rapid transit operational efficiency, improve the difficulties of the service ability of traffic,
And the domestic bus rapid transit control technology also not having producer can provide perfect at present, as at Signal transmissions, detect induction technology, the technology of control strategy aspect do not break through and develop, the application of bus rapid transit is restricted.
Summary of the invention
Fundamental purpose of the present invention is to solve problems of the prior art, provides one to control in real time, accurately, detection faces accurately and reliably, signal transmission is easy reliably, efficiency is high bus rapid transit signal opertaing device, control system and control method.
For separating the deficiencies in the prior art, the present invention realizes by the following technical solutions:
A kind of bus rapid transit signal opertaing device, comprise first information transmitter, bus rapid transit signal control module and controller, described first information transmitter and controller are all electrically connected with described bus rapid transit signal control module, described first information transmitter receives the status information of outside bus rapid transit and passes to described bus rapid transit signal control module, described bus rapid transit signal control module gives to process and draws the instruction of signal priority, the instruction of described controller Received signal strength, described controller changes the timing of respective signal lamp according to instruction, and external control signal lamp: extend green time or shorten red time, ensure that bus rapid transit does not stop directly by crossing or the red light stand-by period reducing public transport.
Described bus rapid transit signal control module includes processor, communication unit, described communication unit connects described first information transmitter, pass to described processor by described communication unit after described first information transmitter receives the status information of outside bus rapid transit, described status information externally sends bus rapid transit by described communication unit again and estimates that the time command of arrival is to described controller after described processor process.
Described bus rapid transit signal control module also includes nonvolatile memory, output display unit, the time command arrived estimated by described nonvolatile memory for the status information and public transport storing the reception bus rapid transit of first information transmitter, described output display unit is for showing that the time value arrived is estimated in public transport; Described communication unit includes one or more in GPS interface, ZigBee interface, RS232 serial ports.
Present invention also offers a kind of bus rapid transit whistle control system, comprise bus rapid transit signal opertaing device as above, also include the mobile unit be arranged on bus rapid transit, described mobile unit comprises the second data transmission machine, display, locating module and in-vehicle processor, described second data transmission machine, display, locating module is all electrically connected with in-vehicle processor, configuration information interface channel between described first information transmitter and described second data transmission machine, described locating module receives satnav signal and processes bus rapid transit running orbit status information in real time, and information is passed to described in-vehicle processor.
Also comprise detection part in described locating module, wherein detection part is one or more in coil type checkout equipment or radio frequency checkout equipment or infrared detection equipment.
Also comprise GPS detection part in described locating module, described GPS detection part detects the gps signal of described bus rapid transit signal control module, forms face and detects.
Described display is touch-screen type operation input instruction, and export and whether display real-time road, present situation display, route selection, maintenance management, system reboot, next crossing title, traffic lights excess times, signalling arrangement perform in BRT priority acccess control and abnormal prompt one or more.
Present invention also offers a kind of bus rapid transit signal control method, be applied in as above in bus rapid transit whistle control system, comprise the steps:
A, by determining the current location (h1) of bus rapid transit in the locating module of mobile unit,
B, in-vehicle processor estimation bus rapid transit arrives the very first time (t1) of next crossing (a1) from current location, wherein, and t1=(h1-a1)/bus rapid transit estimated speed;
C, in-vehicle processor judge that bus rapid transit whether can the next crossing (a1) of reaching on the time within the very first time (t1), if bus rapid transit can not arrive next crossing (a1) within the very first time (t1), enter next step; Otherwise do not changed by the timing of in-vehicle processor clearing lamp;
D, in-vehicle processor predict that bus rapid transit arrives second time (t2) at next crossing (a1) from current primary importance (h2) again, wherein, and t2=(h2-a1)/bus rapid transit estimated speed;
E, in-vehicle processor were predicted after the second time (t2), if when signal lamp is in red light phase place, enter next step; If when signal lamp is in green light phase place, the timing of in-vehicle processor clearing lamp does not change;
If F is after the second time (t2), signal lamp is by when should be in red light phase place in the original plan, now judged to arrive in the time whether bus rapid transit can extend at green light by vehicle-mounted process, if, then indicate green light timing to extend by in-vehicle processor, bus rapid transit passed through in the green light timing prolongation period; If arrived in the time that bus rapid transit can not extend at green light, then enter next step;
G, vehicle-mounted process judge arrive in the time whether bus rapid transit can shorten at red light, and if so, the timing of in-vehicle processor instruction red light is shortened, and bus rapid transit by crossing, otherwise reenters steps A when red light timing is shortened and entered green light.
Further, the residue timing of green light is T
green, lower limit timing is T
under, upper limit timing is T
on, and T
onbe greater than T
under, T
underbe greater than T
green, the time value that green light timing extends is between (T
under-T
green) and (T
on-T
green) between,
The residue timing of red light is T
red;
In step F, when vehicle-mounted process judges that bus rapid transit can at (T
under-T
green) to (T
on-T
green) time period when can arrive, then indicate green light timing to extend by in-vehicle processor;
Or
In step G, work as T
redbe greater than T
ontime, the timing of in-vehicle processor instruction red light is shortened, and makes bus rapid transit pass through crossing when red light timing is shortened and entered green light.
Further, the process of described in-vehicle processor clearing lamp timing is: the parameter that the transmission that in-vehicle processor receives locating module comes, after treatment, by the second data transmission machine and first information transmitter, pass to bus rapid transit signal control module, the GPS interface of bus rapid transit signal control module and the GPS detection part of described locating module face of touching is detected, judge whether to need enabling signal by the processor of bus rapid transit signal control module preferential, finally change timing duration by local controller, control the time that external signal lamp is lighted.
Further, in step C, comprise step C1: when bus rapid transit is when bus platform waits visitor's delay or traffic congestion is incured loss through delay, cause bus rapid transit can not arrive next crossing (a1) within the very first time (t1), in-vehicle processor records the delay time at stop, and enters next step.
Beneficial effect of the present invention is:
1, bus rapid transit signal opertaing device of the present invention, by built-in bus rapid transit control module, the sophisticated equipment such as integrated GPS module, radio transmission apparatus (can be ZigBee signal transmission), embedded microprocessor, nonvolatile memory, the outside bus information of sensitive receiver, processor efficiently processes bus information, send signal priority instruction, facilitate the fast express agency of bus rapid transit.
2, bus rapid transit whistle control system of the present invention, applied by the GPS of bus rapid transit control module and vehicle module, and the communication between data transmission machine (BRT information transmission protector) coordinates replacement beacon (Beacon) communication position application, saves considerable building and maintenance and operation cost; The function possessing signal and respond to fast is detected in the face of GPS in addition, when bus closes on crossing, can send priority signal requirement at any time.
3, in-vehicle processor in bus rapid transit whistle control system of the present invention, satnav signal can be received by locating module, real-time process garage's track and determine detection and localization point, and hourage, turnover control station time, red light stop equal time and the event detection record of number of times, bus and traffic signal state such as to stop.
4. in bus rapid transit whistle control system of the present invention, touch information display possesses the dual-use function of input and output, can export and show real-time road, whether present situation display, route selection, maintenance management, system reboot, next crossing title, traffic lights excess times, signalling arrangement perform BRT priority acccess control and abnormal prompt; Also Priority Directive can manually be cancelled or hardware state correlation circumstance is checked in click.
5, the control method in the present invention, by precisely and grasp in real time BRT bus space-time position, detection zone can elasticity adjustment (setting that the flexible setting of GPS, infrared light power are amplified and gathered), accurate estimation BRT bus is to the crossing time, the mode of full blast is provided to allow BRT bus quickly through crossing, reduce the delay at crossing and save hourage, realizing efficient quick traffic trip.
Accompanying drawing explanation
Fig. 1 is the theory diagram of bus rapid transit signal opertaing device of the present invention;
Fig. 2 is the first embodiment theory diagram of bus rapid transit control module of the present invention;
Fig. 3 is the second embodiment theory diagram of bus rapid transit control module of the present invention;
Fig. 4 is the theory diagram of bus rapid transit control system of the present invention;
Fig. 5 is the schematic diagram of bus rapid transit control system of the present invention;
Fig. 6 is the layout schematic diagram of bus rapid transit control method of the present invention;
Fig. 7 is the control flow chart of bus rapid transit control method of the present invention;
Fig. 8 is that schematic diagram is detected in the GPS face of bus rapid transit control system of the present invention.
1-bus rapid transit signal opertaing device, 2-quick public transport, 3-bus station, 4-signal lamp, 5-satellite, 6-mobile unit, detection zone, 7-face; The t1-very first time, the next crossing of a1--, t2-second time, the next crossing of a1--, h1-primary importance, the h2-second place.
Embodiment
Below in conjunction with accompanying drawing 1-8, the present invention is described further:
Technical scheme of the present invention relates to bus rapid transit signal opertaing device, comprises the control system of bus rapid transit signal opertaing device and is used in control method three themes of this system, below elaborates.
As shown in Figure 1, a kind of bus rapid transit signal opertaing device, comprise first information transmitter, bus rapid transit signal control module and controller, described first information transmitter and controller are all electrically connected with described bus rapid transit signal control module, first the status information receiving outside bus rapid transit by first information transmitter (comprises positional information, running orbit, travelling speed, reach the time estimation etc. of crossing time) and pass to described bus rapid transit signal control module, described bus rapid transit signal control module processes (determination strategy according to the situation of signal lamp phase place when time of arrival and time of arrival) and draw the instruction of signal priority (timing is constant, green light prolongation or red light shortening etc.), the instruction of described controller Received signal strength, described controller adjustment signal controls timing, and external control signal lamp: extend green time or shorten red time, ensure that bus rapid transit does not stop directly by crossing or the red light stand-by period shortening public transport.
As shown in Figure 2, bus rapid transit signal control module in bus rapid transit signal opertaing device includes processor, communication unit, wherein communication unit connects described first information transmitter, described first information transmitter passes to described processor by described communication unit after receiving the status information of external reception bus rapid transit, and described status information externally sends bus rapid transit by described communication unit again and estimates that the time command of arrival is to described controller after described processor process.
As shown in Figure 3, described bus rapid transit signal control module also includes nonvolatile memory, output display unit, the time command arrived estimated by described nonvolatile memory for the status information and public transport storing the reception bus rapid transit of first information transmitter, described output display unit is for showing that the time value arrived is estimated in public transport; Described communication unit includes one or more in GPS interface, ZigBee interface, RS232 serial ports.GPS interface, ZigBee interface, RS232 realize the transmission of gps locator data, Wireless Data Transmission and the transmission of wire communication data respectively.
In addition, bus rapid transit signal control module can also include clock circuit (for providing the initialization of control module or real-time clock signal), watchdog circuit (being WDT again, for monitoring processor program running status), power supply (providing power supply), LED state pilot lamp (for showing the status information of each hardware).
Present invention also offers a kind of bus rapid transit whistle control system (as shown in Figure 3), comprise bus rapid transit signal opertaing device as above, also include the mobile unit be arranged on bus rapid transit, described mobile unit comprises the second data transmission machine, display, locating module and in-vehicle processor, described second data transmission machine, display, locating module is all electrically connected with in-vehicle processor, configuration information interface channel (can be transmitted by ZigBee interface wireless) between described first information transmitter and described second data transmission machine, described locating module receives satnav signal and processes bus rapid transit running orbit status information in real time, and information is passed to described in-vehicle processor, in-vehicle processor show that the status information (comprise positional information, running orbit, travelling speed, reach the time estimation etc. of crossing time) of bus rapid transit hands over first information transmitter to pass to the second data transmission machine afterwards afterwards, and the docking completing information completes.
Mobile unit (containing locating module, in-vehicle processor, display, the second data transmission machine), mainly selects detection zone or check point, analyzes Vehicular behavior, proposes priority signal requirement;
Bus rapid transit signal opertaing device, receives mobile unit priority signal and requires whether process discriminatory analysis performs priority acccess control simultaneously;
Communication system between above-mentioned two equipment: the information mutual communication of BRT bus mobile unit and bus rapid transit signal opertaing device, has led timing instruction to pass to signal lamp.
Wherein in-vehicle processor completes following action:
(1) route track and position, detection zone is stored;
(2) route (containing crossing title), vehicle license plate number is stored;
(3) be sent to crossing stop line time, speed and leave intersection information;
(4) Received signal strength machine return, the information such as show residue number of seconds, the execution of red, green light or do not perform;
(5) bus node continues the calculation into characteristic
(6) BRT information acquisition and deposit the following data of Chu:
A. each non-intersection speed
B. often travel a red light always to stop to wait number of times and red light always to stop equal time
C. each vehicle appears on the scene and returns the time of field
D. the execution of each crossing or not executive signal priority acccess control and red, green light residue number of seconds;
E. vehicle real-time running state detects, and GPS state and the hardware state record such as transmission equipment and teleseme executing state store.
Displaying appliance is for following function and beneficial effect:
(1) touching type operation,
(2) functions such as the display of real-time present situation, route selection, maintenance management, system reboot are comprised,
(3) next crossing title and red, green light excess time is shown,
(4) whether display machine performs BRT priority acccess control and abnormal prompt,
As in Fig. 5, in bus rapid transit whistle control system, the circulation process of information is, vehicle module on bus rapid transit obtains the related status information (locating module and passing of satelline gps system realize) of bus, then the bus rapid transit opertaing device at crossing is passed to, after opertaing device judges, command signal lamp is opened and is extended green light or shorten red light.
Also comprise detection part in described locating module, wherein detection part is one or more in coil type checkout equipment or radio frequency checkout equipment or infrared detection equipment.
Detection part means whether detect public transport arrives the equipment that crossing proposes preferentially to pass through.
Wherein coil type checkout equipment, radio frequency (RFtag) checkout equipment are a some checkout equipment, and it is by detecting whether trigger pip a little, having judged whether that bus is close, thus started priority service;
Coil type checkout equipment, refers to that toroid winding is embedded in Selected Inspection measuring point in advance, and when BRT bus is through toroid winding, winding inductance quantity changes signal and amplifies through vehicle detection unit, then will sense that the information of vehicle passes to signalling arrangement
Radio frequency (RFtag) checkout equipment, refers to link up between BRT bus and signalling arrangement and adopts transponder and trackside receptacle, gives receptacle pass to signalling arrangement again when bus arrives check point by message packet by RFtag;
Infrared detection equipment is face checkout equipment, and it is, by detecting whether have trigger pip in the scope in region, as any time when bus closes on region, crossing sends priority signal requirement, thus starts priority service;
Infrared detection equipment refers to, establish apparatus when action is taken in by vehicle, send the light signal of certain frequency by sending out, different frequency sent by the vehicle of different purposes, then by transmission yarn, information is sent to local controller.
Also comprise GPS detection part in described locating module, described GPS detection part detects the gps signal of described bus rapid transit signal control module, forms face and detects.
GPS face is detected and is referred to, during the default detection zone of longitude and latitude institute that bus arrival GPS provides (entering a region internal trigger signal), priority signal is required that information is by radio transmission apparatus and signalling arrangement transmitted in both directions data by vehicle module, requires that signalling arrangement gives signal priority and controls (as Fig. 8).
Described display is touch-screen type operation input instruction, and export and whether display real-time road, present situation display, route selection, maintenance management, system reboot, next crossing title, traffic lights excess times, signalling arrangement perform in BRT priority acccess control and abnormal prompt one or more.
The reduced parameter of above detection part is shown in following list
Bus rapid transit whistle control system based on BRT bus node continue into district detect calculation mode, by grasping the accurate space-time position (locating module of BRT bus, in-vehicle processor), detection zone can be adjusted to optimum position (GPS detects and can realize) flexibly, have " precisely ", " in real time ", advantage (the continuous measuring and calculating of current location and position, crossing of " triggering ", the accurate measure of time of arrival, the accurate triggering of GPS detection faces), thus meet the information mutual communication of BRT bus signal opertaing device and mobile unit, realize precisely, real-time priority signal controls, finally reach bus rapid transit object rapidly and efficiently.
As shown in fig. 6-7, present invention also offers a kind of bus rapid transit signal control method, be applied in as above in bus rapid transit whistle control system, comprise the steps:
A, by determining the current location (h1) of bus rapid transit in the locating module of mobile unit,
B, in-vehicle processor estimation bus rapid transit arrives the very first time (t1) of next crossing (a1) from current location, wherein, and t1=(h1-a1)/bus rapid transit estimated speed;
C, in-vehicle processor judge that bus rapid transit whether can the next crossing (a1) of reaching on the time within the very first time (t1), if bus rapid transit can not arrive next crossing (a1) within the very first time (t1), enter next step; Otherwise do not changed by the timing of in-vehicle processor clearing lamp;
D, in-vehicle processor predict that bus rapid transit arrives second time (t2) at next crossing (a1) from current primary importance (h2) again, wherein, and t2=(h2-a1)/bus rapid transit estimated speed;
E, in-vehicle processor were predicted after the second time (t2), if when signal lamp is in red light phase place, enter next step; If when signal lamp is in green light phase place, the timing of in-vehicle processor clearing lamp does not change;
If F is after the second time (t2), signal lamp is by when should be in red light phase place in the original plan, now judged to arrive in the time whether bus rapid transit can extend at green light by vehicle-mounted process, if, then indicate green light timing to extend by in-vehicle processor, bus rapid transit passed through in the green light timing prolongation period; If arrived in the time that bus rapid transit can not extend at green light, then enter next step;
G, vehicle-mounted process judge arrive in the time whether bus rapid transit can shorten at red light, and if so, the timing of in-vehicle processor instruction red light is shortened, and bus rapid transit by crossing, otherwise reenters steps A when red light timing is shortened and entered green light.
Further, the residue timing of green light is T
green, lower limit timing is T
under, upper limit timing is T
on, and T
onbe greater than T
under, T
underbe greater than T
green, the time value that green light timing extends is between (T
under-T
green) and (T
on-T
green) between;
The residue timing of red light is T
red;
In step F, when vehicle-mounted process judges that bus rapid transit can at (T
under-T
green) to (T
on-T
green) time period when can arrive, then indicate green light timing to extend by in-vehicle processor;
Or
In step G, work as T
redbe greater than T
ontime, the timing of in-vehicle processor instruction red light is shortened, and makes bus rapid transit pass through crossing when red light timing is shortened and entered green light.
Such as: T
greenly be5 seconds, T
underbe 8 seconds, T
onwhen being 12 seconds, performing the control that bus preferentially extends green light is opportunity: between (8 seconds-5 seconds) 3 seconds < green light residue number of seconds < (12 seconds-5 seconds) 7 seconds;
The control that execution bus preferentially shortens red light is opportunity: 12 seconds < red light residue number of seconds;
Further, the process of described in-vehicle processor clearing lamp timing is: the parameter that the transmission that in-vehicle processor receives locating module comes, after treatment, by the second data transmission machine and first information transmitter, pass to bus rapid transit signal control module, the GPS interface of bus rapid transit signal control module and the GPS detection part of described locating module face of touching is detected, judge whether to need enabling signal by the processor of bus rapid transit signal control module preferential, finally change timing duration by local controller, control the time that external signal lamp is lighted.
Further, in step C, comprise step C1: when bus rapid transit bus platform wait visitor incur loss through delay (waiting delay of bus) or traffic congestion incur loss through delay (speed far below average speed prediction value or temporary traffic control, extraordinary emergency vehicle by--emergency tender, fire truck, etc. time delay) time, cause bus rapid transit can not arrive next crossing (a1) within the very first time (t1), in-vehicle processor records the delay time at stop, and enters next step.
Utilize technical solutions according to the invention, or those skilled in the art being under the inspiration of technical solution of the present invention, designing similar technical scheme, and arrive above-mentioned technique effect, is all fall into protection scope of the present invention.
Claims (11)
1. a bus rapid transit signal opertaing device, it is characterized in that: comprise first information transmitter, bus rapid transit signal control module and controller, described first information transmitter and controller are all electrically connected with described bus rapid transit signal control module, described first information transmitter receives the status information of outside bus rapid transit and passes to described bus rapid transit signal control module, described bus rapid transit signal control module gives to process and draws the instruction of signal priority, the instruction of described controller Received signal strength, described controller adjustment signal controls timing, and external control signal lamp: extend green time or shorten red time, ensure that bus rapid transit does not stop directly by crossing or the red light stand-by period reducing public transport.
2. bus rapid transit signal opertaing device according to claim 1, it is characterized in that: described bus rapid transit signal control module includes processor, communication unit, described communication unit connects described first information transmitter, described first information transmitter passes to described processor by described communication unit after receiving the status information of outside bus rapid transit, and described status information externally sends bus rapid transit by described communication unit again and estimates that the time command of arrival is to described controller after described processor process.
3. bus rapid transit signal opertaing device according to claim 2, it is characterized in that: described bus rapid transit signal control module also includes nonvolatile memory, output display unit, the time command arrived estimated by described nonvolatile memory for the status information and public transport storing the reception bus rapid transit of first information transmitter, described output display unit is for showing that the time value arrived is estimated in public transport; Described communication unit includes one or more in GPS interface, ZigBee interface, RS232 serial ports.
4. a bus rapid transit whistle control system, comprise as the bus rapid transit signal opertaing device in claim 1 or 2 or 3, it is characterized in that: also include the mobile unit be arranged on bus rapid transit, described mobile unit comprises the second data transmission machine, display, locating module and in-vehicle processor, described second data transmission machine, display, locating module is all electrically connected with in-vehicle processor, configuration information interface channel between described first information transmitter and described second data transmission machine, described locating module receives satnav signal and processes bus rapid transit running orbit status information in real time, and information is passed to described in-vehicle processor.
5. bus rapid transit whistle control system according to claim 4, is characterized in that: also comprise detection part in described locating module, and wherein detection part is one or more in coil type checkout equipment or radio frequency checkout equipment or infrared detection equipment.
6. bus rapid transit whistle control system according to claim 4, is characterized in that: also comprise GPS detection part in described locating module, and described GPS detection part detects the gps signal of described bus rapid transit signal control module, forms face and detects.
7. bus rapid transit whistle control system according to claim 4, it is characterized in that: described display is touch-screen type operation input instruction, and export and whether display real-time road, present situation display, route selection, maintenance management, system reboot, end opening title, traffic lights excess times, signalling arrangement perform in BRT priority acccess control and abnormal prompt one or more.
8. a bus rapid transit signal control method, is applied in as in bus rapid transit whistle control system arbitrary in claim 4-7, it is characterized in that, comprise the steps:
A, by determining the current location (h1) of bus rapid transit in the locating module of mobile unit,
B, in-vehicle processor estimation bus rapid transit arrives the very first time (t1) of next crossing (a1) from current location, wherein, and t1=(h1-a1)/bus rapid transit estimated speed;
C, in-vehicle processor judge that bus rapid transit whether can the next crossing (a1) of reaching on the time within the very first time (t1), if bus rapid transit can not arrive next crossing (a1) within the very first time (t1), enter next step; Otherwise do not changed by the timing of in-vehicle processor clearing lamp;
D, in-vehicle processor predict that bus rapid transit arrives second time (t2) at next crossing (a1) from the current second place (h2) again, wherein, and t2=(h2-a1)/bus rapid transit estimated speed;
E, in-vehicle processor were predicted after the second time (t2), if when signal lamp is in red light phase place, enter next step; If when signal lamp is in green light phase place, the timing of in-vehicle processor clearing lamp does not change;
If F is after the second time (t2), signal lamp is by when should be in red light phase place in the original plan, now judged to arrive in the time whether bus rapid transit can extend at green light by vehicle-mounted process, if, then indicate green light timing to extend by in-vehicle processor, bus rapid transit passed through in the green light timing prolongation period; If arrived in the time that bus rapid transit can not extend at green light, then enter next step;
G, vehicle-mounted process judge arrive in the time whether bus rapid transit can shorten at red light, and if so, the timing of in-vehicle processor instruction red light is shortened, and bus rapid transit by crossing, otherwise reenters steps A when red light timing is shortened and entered green light.
9. bus rapid transit signal control method according to claim 8, is characterized in that:
The residue timing of green light is T
green, lower limit timing is T
under, upper limit timing is T
on, and T
onbe greater than T
under, T
underbe greater than T
green, the time value that green light timing extends is between (T
under-T
green) and (T
on-T
green) between,
The residue timing of red light is T
red;
In step F, when vehicle-mounted process judges that bus rapid transit can at (T
under-T
green) to (T
on-T
green) time period when can arrive, then indicate green light timing to extend by in-vehicle processor;
Or
In step G, work as T
redbe greater than T
ontime, the timing of in-vehicle processor instruction red light is shortened, and makes bus rapid transit pass through crossing when red light timing is shortened and entered green light.
10. bus rapid transit signal control method according to claim 8, is characterized in that:
The process of described in-vehicle processor clearing lamp timing is: the parameter that the transmission that in-vehicle processor receives locating module comes, after treatment, by the second data transmission machine and first information transmitter, pass to bus rapid transit signal control module, the GPS interface of bus rapid transit signal control module and the GPS detection part of described locating module face of touching is detected, judge whether to need enabling signal by the processor of bus rapid transit signal control module preferential, change timing duration by controller, control the time that external signal lamp color is opened and lighted.
11. bus rapid transit signal control methods according to claim 8, it is characterized in that: in step C, comprise step C1: when bus rapid transit is when bus platform waits visitor's delay or traffic congestion is incured loss through delay, cause bus rapid transit can not arrive next crossing (a1) within the very first time (t1), in-vehicle processor records the delay time at stop, and enters next step.
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105632201A (en) * | 2016-03-17 | 2016-06-01 | 安徽科力信息产业有限责任公司 | Visual intelligent control device and method based on bus rapid transit priority request |
| CN106971569A (en) * | 2017-03-27 | 2017-07-21 | 华南理工大学 | The signal priority control method at intersection moment is reached based on prediction tramcar |
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