CN117576928B - Traffic signal control method and system for trolley bus - Google Patents
Traffic signal control method and system for trolley bus Download PDFInfo
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- CN117576928B CN117576928B CN202410051524.7A CN202410051524A CN117576928B CN 117576928 B CN117576928 B CN 117576928B CN 202410051524 A CN202410051524 A CN 202410051524A CN 117576928 B CN117576928 B CN 117576928B
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- 238000000034 method Methods 0.000 title claims abstract description 17
- 230000008859 change Effects 0.000 abstract description 3
- 230000009286 beneficial effect Effects 0.000 abstract 1
- 238000012986 modification Methods 0.000 description 4
- 230000004048 modification Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000004075 alteration Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
Classifications
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- G—PHYSICS
- G08—SIGNALLING
- G08G—TRAFFIC CONTROL SYSTEMS
- G08G1/00—Traffic control systems for road vehicles
- G08G1/07—Controlling traffic signals
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- G—PHYSICS
- G08—SIGNALLING
- G08G—TRAFFIC CONTROL SYSTEMS
- G08G1/00—Traffic control systems for road vehicles
- G08G1/01—Detecting movement of traffic to be counted or controlled
- G08G1/0104—Measuring and analyzing of parameters relative to traffic conditions
- G08G1/0125—Traffic data processing
- G08G1/0129—Traffic data processing for creating historical data or processing based on historical data
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- G—PHYSICS
- G08—SIGNALLING
- G08G—TRAFFIC CONTROL SYSTEMS
- G08G1/00—Traffic control systems for road vehicles
- G08G1/01—Detecting movement of traffic to be counted or controlled
- G08G1/056—Detecting movement of traffic to be counted or controlled with provision for distinguishing direction of travel
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/30—Services specially adapted for particular environments, situations or purposes
- H04W4/40—Services specially adapted for particular environments, situations or purposes for vehicles, e.g. vehicle-to-pedestrians [V2P]
- H04W4/42—Services specially adapted for particular environments, situations or purposes for vehicles, e.g. vehicle-to-pedestrians [V2P] for mass transport vehicles, e.g. buses, trains or aircraft
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/30—Services specially adapted for particular environments, situations or purposes
- H04W4/40—Services specially adapted for particular environments, situations or purposes for vehicles, e.g. vehicle-to-pedestrians [V2P]
- H04W4/44—Services specially adapted for particular environments, situations or purposes for vehicles, e.g. vehicle-to-pedestrians [V2P] for communication between vehicles and infrastructures, e.g. vehicle-to-cloud [V2C] or vehicle-to-home [V2H]
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
- Y02P90/02—Total factory control, e.g. smart factories, flexible manufacturing systems [FMS] or integrated manufacturing systems [IMS]
Abstract
The application discloses a traffic signal control method and a system for a trolley bus, and relates to the technical field of automatic control, wherein the control method comprises the following steps: acquiring position information of a trolley bus in a temporary mode; transmitting the position information to a digital control center through a nearby wireless access point; the digital control center analyzes the position information to determine a target intersection, and sends a control instruction to an intersection controller arranged on the target intersection, and the intersection controller controls the electronic indicating device according to the control instruction. The digital control center, the vehicle-mounted controller and the intersection controller can achieve the same automatic control function as the electronic indicating device in the formal mode, do not need to change the existing line in a large scale, can timely cope with emergency situations, and are beneficial to improving the running efficiency of the trolley bus.
Description
Technical Field
The application relates to the technical field of multi-equipment centralized control, in particular to a traffic signal control method and system of a trolley bus.
Background
The trolley bus is an important public transport means, and compared with the trolley bus, the trolley bus does not need to lay tracks, has small influence on an urban transportation system, does not need a large-capacity battery, and therefore, still operates in some cities.
In general, when a trolley bus runs in a city, the indication of a traffic signal lamp is required to be observed, and in some cities, the trolley bus is given certain priority to pass, namely when the trolley bus is about to run to an intersection with the traffic signal lamp, the traffic intersection controller adjusts the time of the signal lamp of the current intersection, so that the waiting time of the trolley bus is reduced or even eliminated, and the running efficiency of the trolley bus in the city is improved. For example, CN104635672a discloses an intersection controller system of a tramcar, which adopts a wireless network technology to realize automatic control of traffic signals of the tramcar at an intersection without manual duty.
However, the above-mentioned patent is only applicable to the tram, because the track of the tram is fixed, so will not receive the influence of the sudden factor in the city, but the tram is because not relying on the track, so some emergencies such as road maintenance or car accident etc. lead to the road to seal, the tram needs to change the circuit temporarily, at this moment can utilize the battery to provide power, but the traffic signal can not in time be controlled, result in the tram to change the circuit temporarily after the operation efficiency greatly reduced.
Disclosure of Invention
The embodiment of the application provides a traffic signal control method and a traffic signal control system for a trolley bus, which are used for solving the problem that traffic signals cannot be controlled in time after the trolley bus temporarily changes a line in the prior art.
In one aspect, an embodiment of the present application provides a traffic signal control method for a trolley bus, including:
Acquiring position information of a trolley bus in a temporary mode;
transmitting the position information to a digital control center through a nearby wireless access point;
The digital control center analyzes the position information to determine a target intersection, and sends a control instruction to an intersection controller arranged on the target intersection, and the intersection controller controls the electronic indicating device according to the control instruction.
On the other hand, the embodiment of the application also provides a traffic signal control system of the trolley bus, which comprises:
The switching unit is used for switching the running mode of the trolley bus and acquiring the position information of the trolley bus through the positioning unit in the temporary mode;
The wireless access point is used for receiving the position information and transmitting the position information to the digital control center after receiving the position information;
The digital control center is used for analyzing the position information to determine a target intersection, sending a control instruction to an intersection controller arranged on the target intersection, and controlling the electronic indicating device according to the control instruction.
The traffic signal control method and system for the trolley bus have the following advantages:
The digital control center, the vehicle-mounted controller and the intersection controller can achieve the same automatic control function as the electronic indicating device in the formal mode, the existing line does not need to be changed in a large scale, emergency situations can be dealt with in time, and the running efficiency of the trolley bus is improved.
Drawings
In order to more clearly illustrate the embodiments of the application or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic view of an application scenario provided in an embodiment of the present application;
fig. 2 is a schematic diagram of the composition of the trolley bus according to the embodiment of the present application;
Fig. 3 is a schematic structural diagram of a power receiving component according to an embodiment of the present application;
Fig. 4 is a schematic diagram of the composition of the contact net according to the embodiment of the present application.
Reference numerals illustrate: 100. a digital control center; 200. an intersection controller; 300. an electronic indication device; 400. formal lines; 500. a closed region; 600. a temporary line; 700. a carriage; 710. a power receiving component; 7101. a power receiving rod; 7102. a current collector; 7103. an identity recognition unit; 720. a vehicle-mounted controller; 730. a switching unit; 740. a positioning unit; 800. a cross bar; 810. a contact line; 820. an identity reading unit; 830. a wireless access point.
Detailed Description
The following description of the embodiments of the present application will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present application, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.
The embodiment of the application provides a trolley bus traffic signal control method, corresponding systems are shown in figures 1-4, and the trolley bus traffic signal control method comprises the following steps:
And S100, acquiring position information of the trolley bus in a temporary mode.
Illustratively, as shown in fig. 1, each intersection is provided with an electronic indication device 300, and an intersection controller for controlling the electronic indication device 300 is provided in the vicinity thereof. In the formal mode, the driver needs to drive the trolley bus to travel along the formal route 400, but when the closed area 500 occurs in a certain road section due to an emergency, the driver needs to temporarily adjust the route to make the trolley bus travel along the temporary route 600, the trolley bus communicates with the digital control center 100 at all times during the traveling process, the digital control center 100 knows information such as the position and direction of the trolley bus, and the intersection controller 200 on the temporary route 600 is controlled based on the information, so that the time for the electronic indication device 300 to adjust the signal display is shortened as much as possible.
As shown in fig. 2, the trolley bus includes a car 700, a power receiving module 710 is provided at the outer top of the car 700, and a vehicle-mounted controller 720, a switching unit 730 and a positioning unit 740 are provided inside the car, and the power receiving module 710 is used for contacting with a contact net provided on the main line 400 to obtain a power source for charging a battery or driving a motor. The vehicle-mounted controller 720, the switching unit 730 and the positioning unit 740 are all electrically connected, the switching unit 730 can be arranged on a driving platform, a driver triggers mode switching through pressing, touching and the like, when a temporary line adjustment is needed, the driver can enter a temporary mode through the switching unit 730, and in the mode, the positioning unit 740 acquires the position information of the trolley bus in real time through technologies such as Beidou or GPS and the like, and the information is sent to the vehicle-mounted controller 720.
S110, the location information is sent to the digital control center 100 through the nearby wireless access point 830.
For example, an in-vehicle access point may be provided in the vehicle compartment 700, and after the in-vehicle access point is electrically connected to the in-vehicle controller 720, the in-vehicle controller 720 transmits the position information of the trolley bus to the in-vehicle access point, and the in-vehicle access point converts the position information into a wireless signal and transmits the wireless signal. When there is a wireless access point 830 within the transmission range of the signal, the wireless access point 830 will receive the location information and send it to the digital control center 100 by wired or wireless means.
In the embodiment of the present application, since the enclosed area 500 is generally smaller in scope, the temporary line 600 of the trolley bus when temporarily adjusting the line is also shorter, and the distance between the wireless access point 830 on the temporary line 600 and the main line 400 is also smaller, usually in the range of hundreds of meters, so that the vehicle-mounted access point also needs only smaller power to transmit the wireless signal.
Further, in the present application, the vehicle-mounted access point adopts an omni-directional antenna, that is, transmits wireless signals in all directions, and all wireless access points 830 in the transmitting range can receive the position information, so that there may be more wireless access points 830 that simultaneously receive the same position information, and all the wireless access points 830 can send the position information to the digital control center 100 after receiving the position information, and the digital control center 100 only needs to retain one of the position information after receiving all the position information.
S120, the digital control center 100 analyzes the position information to determine a target intersection, and sends a control instruction to the intersection controller 200 arranged on the target intersection, and the intersection controller 200 controls the electronic indication device 300 according to the control instruction.
Illustratively, the location information is collected at least at two different times, the digital control center 100 determines the traveling direction of the trolley bus according to the plurality of locations, and determines the intersection controller 200 to be controlled according to the location information and the traveling direction.
Further, after determining the driving direction, the digital control center 100 also compares the driving direction with the formal route 400, predicts the driving direction of the trolley bus at the intersection where the intersection controller 200 needs to be controlled, and obtains the predicted driving direction, and the digital control center 100 controls the intersection controller 200 according to the predicted driving direction.
Since the temporary line 600 cannot be determined in advance by the driver, the accurate information of the temporary line 600 can be determined only after the driver drives the trolley bus to bypass the enclosed area 500 and return to the main line 400, and thus the running direction of the trolley bus at each intersection cannot be determined in advance during the traveling process. Therefore, the application determines the possible running direction of the trolley bus in a prediction mode, namely, predicts the running direction, and controls the electronic indicating devices 300 on each lane based on the predicted running direction, thereby realizing the control of the signals in the possible running direction of the trolley bus and reducing the intervention of the signals in other directions.
In the embodiment of the present application, although the entire temporary line 600 cannot be determined in advance by the driver, the driver can know the situation of each intersection in advance during driving, including whether each lane on the intersection can normally pass, if each lane can normally pass, it is feasible to rely on the predicted driving direction predicted by the digital control center 100, if some lanes cannot normally pass due to the influence of the enclosed area 500, and if the lanes where the lanes cannot normally pass conflict with the predicted driving direction predicted by the digital control center 100, the driver is required to input the direction to be driven in advance, and after the direction data is sent to the digital control center 100 through the vehicle-mounted controller 720, the vehicle-mounted access point and the wireless access point 830, the digital control center 100 adjusts the predicted driving direction in time according to the direction data, so as to control the electronic indicating device 300 of the lane in the direction selected by the driver.
However, in actual use, the driver may not know the predicted traveling direction predicted by the digital control center 100, and thus may not determine when the direction data needs to be input, so the driver may input the direction data immediately after passing through each intersection, the digital control center compares the direction data input by the driver with the predicted traveling direction, and if the two are consistent, the direction of the predicted form is not adjusted.
After the driver drives the trolley bus back to the formal route 400, the driver can switch to the formal mode through the switching unit 730. In the formal mode, the identity information of the trolley bus is read by the identity reading unit 820 during the running process of the trolley bus, the identity information is transmitted to the digital control center 100 through the wireless access point 830, the digital control center 100 determines the position and direction of the trolley bus according to the identity information and the position of the identity reading unit 820, and determines the intersection controller 200 to be controlled according to the position and direction of the trolley bus.
Further, the identity reading unit 820 also stores intersection position information, and the identity reading unit 820 transmits the intersection position information and the identity information to the digital control center 100 through the wireless access point 830.
Since each identity reading unit 820 is disposed at the position on the formal line 400 near the intersection, the position of the intersection closest to the identity reading unit 820 can be written into the identity reading unit 820, and after the identity information is read, the identity information and the intersection position information can be sent to the wireless access point 830 together, and then be acquired by the digital control center 100.
The identity information of the trolley bus represents the formal line 400 on which the trolley bus runs, after the digital control center 100 obtains the identity information, the intersection where the trolley bus is about to pass next can be uniquely determined, if the intersection is consistent with the intersection position information sent by the identity reading unit 820, it is indicated that the identity information read by the identity reading unit 820 is correct, and at this time, the digital control center 100 can correspondingly control the intersection controller 200 according to the preset time, that is, the time when the trolley bus arrives at the intersection after passing through the identity reading unit 820.
On the basis of the control method, the embodiment of the application also provides a traffic signal control system of the trolley bus, which comprises the following components:
a switching unit 730 for switching an operation mode of the trolley bus, and acquiring position information of the trolley bus through the positioning unit 740 in the temporary mode;
the wireless access point 830 is configured to receive the location information, and the wireless access point 830 sends the location information to the digital control center 100 after receiving the location information;
The digital control center 100 is configured to analyze the position information to determine a target intersection, and send a control instruction to the intersection controller 200 disposed on the target intersection, where the intersection controller 200 is configured to control the electronic indication device 300 according to the control instruction.
Illustratively, the power receiving component 710 includes a power receiving pole 7101, a power receiving unit 7102 and an identity recognition unit 7103, identity information of the trolley bus is stored in the identity recognition unit 7103, the identity recognition unit 7103 is disposed on a side surface of the power receiving unit 7102, a contact net is disposed on the formal line 400, an identity reading unit 820 is disposed in the contact net, the identity reading unit 820 is used for reading the identity information when the identity recognition unit 7103 passes along with the trolley bus, and sending the identity information to the digital control center 100 through the wireless access point 830, and the digital control center 100 determines the intersection controller 200 to be controlled according to the identity information.
The identification unit 7103 may employ a radio frequency card, and correspondingly, the identification reading unit 820 may employ a radio frequency card reader. The identity recognition unit 7103 may write information of a corresponding trolley bus in advance, such as a line number, and since the identity recognition unit 7103 is disposed on the outer side of the current collector 7102, the identity recognition unit 7103 will move together with the current collector 7102, and when the identity recognition unit 7103 passes near the identity reading unit 820 during the movement, if the distance between the two is smaller than a threshold value, the identity reading unit 820 may read the identity information in the identity recognition unit 7103.
In the embodiment of the application, the contact net comprises a cross bar 800 and a contact line 810, the contact line 810 is hung below the cross bar 800, the identity reading unit 820 is arranged at the bottom of the cross bar 800 and near to the contact line 810, and when the identity recognition unit 7103 moves along with the trolley bus, the distance between the identity recognition unit 7103 and the identity reading unit 820 is smaller than a threshold value, so that the identity reading unit 820 can read the identity information.
Wireless access points 830 may also be provided on the rail 800 to make reasonable use of space on the rail 800 and to reduce the distance to the identity reading unit 820. After both the identity reading unit 820 and the wireless access point 830 are positioned on the crossbar 800, they can both draw power from the contact wire 810 without requiring additional power supplies. Since the current collector 7102 needs to keep sliding contact with the contact line 810, the distance between the current collector 7102 and the contact line 810 is basically unchanged, so that after the position of the identity reading unit 820 on the cross bar 800 is reasonably set, when the identity reading unit 7103 moves along with the current collector 7102 and passes near the identity reading unit 820, the distance between the identity reading unit 820 and the identity reading unit 7103 can be controlled within a threshold value, so that the purpose that identity information is smoothly read is achieved.
While preferred embodiments of the present application have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. It is therefore intended that the following claims be interpreted as including the preferred embodiments and all such alterations and modifications as fall within the scope of the application.
It will be apparent to those skilled in the art that various modifications and variations can be made to the present application without departing from the spirit or scope of the application. Thus, it is intended that the present application also include such modifications and alterations insofar as they come within the scope of the appended claims or the equivalents thereof.
Claims (7)
1. A traffic signal control method of a trolley bus, comprising:
when the line needs to be temporarily adjusted, a driver enters a temporary mode through a switching unit (730), and position information of the trolley bus is acquired in the temporary mode;
transmitting the location information to a digital control center (100) through a nearby wireless access point (830);
Analyzing the position information by the digital control center (100) to determine a target intersection, and sending a control instruction to an intersection controller (200) arranged on the target intersection, wherein the intersection controller (200) controls an electronic indicating device (300) according to the control instruction;
The digital control center (100) determines the running direction of the trolley bus according to a plurality of positions, determines the target intersection and an intersection controller (200) to be controlled according to the position information and the running direction, compares the running direction with a formal line (400) after determining the running direction, predicts the running direction of the trolley bus at the intersection where the intersection controller (200) is required to be controlled, and obtains a predicted running direction, and the digital control center (100) controls the intersection controller (200) according to the predicted running direction; after the predicted running direction is obtained, a driver inputs direction data when passing through each intersection, the digital control center (100) compares the direction data with the predicted running direction, and the predicted running direction is adjusted in time according to a comparison result.
2. The traffic signal control method of a trolley bus according to claim 1, characterized in that in a formal mode, the trolley bus reads identity information of the trolley bus by an identity reading unit (820) during traveling, the identity information is transmitted to the digital control center (100) through the wireless access point (830), the digital control center (100) determines the position and direction of the trolley bus according to the identity information and the position of the identity reading unit (820), and determines the intersection controller (200) to be controlled according to the position and direction of the trolley bus.
3. The method according to claim 2, wherein the identity reading unit (820) further stores intersection position information, and the identity reading unit (820) transmits the intersection position information and the identity information to the digital control center (100) through the wireless access point (830) at the same time.
4. A traffic signal control system for a trolley bus, comprising:
A switching unit (730) for entering a temporary mode in response to an operation of a driver when a temporary adjustment of the route is required, and acquiring position information of the trolley bus through a positioning unit (740) in the temporary mode;
A wireless access point (830) for receiving the location information, the wireless access point (830) transmitting the location information to a digital control center (100) after receiving the location information;
The digital control center (100) is used for analyzing the position information to determine a target intersection and sending a control instruction to an intersection controller (200) arranged on the target intersection, and the intersection controller (200) is used for controlling an electronic indicating device (300) according to the control instruction; the position information is collected at least at two different moments, the digital control center (100) determines the running direction of the trolley bus according to a plurality of positions, the target intersection and an intersection controller (200) which need to be controlled are determined according to the position information and the running direction, after the running direction is determined, the digital control center (100) also compares the running direction with a formal line (400), predicts the running direction of the trolley bus at the intersection where the intersection controller (200) needs to be controlled, and obtains a predicted running direction, and the digital control center (100) controls the intersection controller (200) according to the predicted running direction; after the predicted running direction is obtained, a driver inputs direction data when passing through each intersection, the digital control center (100) compares the direction data with the predicted running direction, and the predicted running direction is adjusted in time according to a comparison result.
5. The trolley bus traffic signal control system according to claim 4, characterized in that an in-vehicle controller (720) is further provided in the trolley bus (700), the in-vehicle controller (720) being configured to send the position information to the digital control center (100) via the wireless access point (830) in the temporary mode.
6. The trolley bus traffic signal control system according to claim 5, wherein a power receiving component (710) is disposed at the top of the carriage (700), the power receiving component (710) comprises a power receiving rod (7101), a power receiving device (7102) and an identity recognition unit (7103), identity information of the trolley bus is stored in the identity recognition unit (7103), the identity recognition unit (7103) is disposed on the side of the power receiving device (7102), a contact net is disposed on a formal line (400), an identity reading unit (820) is disposed in the contact net, the identity reading unit (820) is used for reading the identity information when the identity recognition unit (7103) passes along with the trolley bus, and sending the identity information to the digital control center (100) through the wireless access point (830), and the digital control center (100) determines the intersection controller (200) to be controlled according to the identity information.
7. The trolley bus traffic signal control system according to claim 6, wherein the overhead contact system comprises a cross bar (800) and a contact line (810), the contact line (810) is hung below the cross bar (800), the identity reading unit (820) is disposed at a position, close to the contact line (810), at the bottom of the cross bar (800), and when the identity recognition unit (7103) moves along with the trolley bus, a distance between the identity recognition unit (7103) and the identity reading unit (820) is smaller than a threshold value, so that the identity reading unit (820) reads the identity information.
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| CN202410051524.7A CN117576928B (en) | 2024-01-15 | 2024-01-15 | Traffic signal control method and system for trolley bus |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202410051524.7A CN117576928B (en) | 2024-01-15 | 2024-01-15 | Traffic signal control method and system for trolley bus |
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| CN117576928B true CN117576928B (en) | 2024-05-03 |
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| CN113460091A (en) * | 2021-08-23 | 2021-10-01 | 吉林大学 | Unprotected crossroad unmanned vehicle rolling optimization decision method |
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