CN113538955A - Vehicle-mounted traffic information prompting guideboard system based on vehicle-road collaborative scene - Google Patents
Vehicle-mounted traffic information prompting guideboard system based on vehicle-road collaborative scene Download PDFInfo
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- CN113538955A CN113538955A CN202110657155.2A CN202110657155A CN113538955A CN 113538955 A CN113538955 A CN 113538955A CN 202110657155 A CN202110657155 A CN 202110657155A CN 113538955 A CN113538955 A CN 113538955A
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- 238000004891 communication Methods 0.000 claims abstract description 42
- 238000005516 engineering process Methods 0.000 abstract description 7
- 230000005540 biological transmission Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000013461 design Methods 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
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- G—PHYSICS
- G08—SIGNALLING
- G08G—TRAFFIC CONTROL SYSTEMS
- G08G1/00—Traffic control systems for road vehicles
- G08G1/123—Traffic control systems for road vehicles indicating the position of vehicles, e.g. scheduled vehicles; Managing passenger vehicles circulating according to a fixed timetable, e.g. buses, trains, trams
- G08G1/133—Traffic control systems for road vehicles indicating the position of vehicles, e.g. scheduled vehicles; Managing passenger vehicles circulating according to a fixed timetable, e.g. buses, trains, trams within the vehicle ; Indicators inside the vehicles or at stops
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
- H04L12/40—Bus networks
- H04L12/40006—Architecture of a communication node
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
- H04L12/40—Bus networks
- H04L12/40143—Bus networks involving priority mechanisms
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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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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
- H04L12/40—Bus networks
- H04L2012/40208—Bus networks characterized by the use of a particular bus standard
- H04L2012/40215—Controller Area Network CAN
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- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Radar, Positioning & Navigation (AREA)
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- General Physics & Mathematics (AREA)
- Traffic Control Systems (AREA)
Abstract
The invention discloses a vehicle-mounted traffic information prompting guideboard system based on a vehicle-road collaborative scene, which comprises a guideboard lamp panel, a power supply module and a guideboard control card, wherein an association unit comprises a roadside module, a vehicle-mounted module and an original vehicle service module, and the power supply module is used for supplying power to the guideboard lamp panel and the guideboard control card; the guideboard control card controls the display of the guideboard lamp panel through an 75/08 interface; the road side module acquires traffic signal lamp information at a road side and communicates with a vehicle; the vehicle-mounted module is a vehicle-mounted MEC in the bus and is communicated with the guideboard through a CAN bus; the original vehicle service module is a vehicle-mounted dispatching host of the public traffic service, and shares a CAN bus with the guideboard and the vehicle-mounted MEC. According to the invention, a CAN communication mode is adopted, the problem of data conflict is solved, traffic light information is effectively displayed in time, and the application of a vehicle-road cooperation technology and a reliable communication technology in the public field is promoted, so that a vehicle-road cooperation system is constructed.
Description
Technical Field
The invention relates to the technical field of social services in public transportation, in particular to a vehicle-mounted traffic information prompting guideboard system based on a vehicle-road cooperation scene.
Background
At present, the bus-mounted guideboard can display the information of bus lines and first and last stations, and widely adopts an RS485 communication mode to receive the information of a bus-mounted dispatching host. In the bus-road cooperative system, the bus-mounted rear guideboard is an independent product and is specially used for displaying traffic light information of intersections.
In the existing design, the same kind of LED lamp panels are used for separately displaying public transportation information and traffic light information, so that the situations of repeated investment and resource waste exist.
The problems existing at present mainly are as follows:
(1) and (5) repeatedly constructing equipment. The bus is used for displaying the line number, the back guideboards of the first and last station information and the signs of the display traffic lights, all adopt patch LED lamp panels, and the control system adopts 08 or 75 interfaces which are universal in the industry. The specifications, the materials used, the control modes and the like of the two products have great similarity, and the prior product separation design causes great resource waste.
(2) And unreasonable distribution of communication modes. The bus-mounted rear board is generally controlled in an RS485 mode, but the RS485 unreliable communication mode is not suitable for being adopted due to the requirement of real-time display of traffic lights. The use mode of the prior product is that the general guideboard uses RS485, and the traffic light notice board adopts CAN or network communication mode. Higher demands are placed on the cable deployment of vehicles.
(3) And (4) splitting of the bus road cooperation system and bus operation. The traffic light notice board is only related to the running track, but the factors of the bus carrier are not considered. In fact, the traffic light notice board should solve the problem of providing the information of the least own lane light state to the vehicles behind the own lane which are blocked by the buses. The current traffic lights are not combined with a bus running line, only the running direction of a vehicle is concerned, the GNSS positioning is used as key input information, but when a plurality of traffic lights exist at an intersection and cannot be completely displayed on a notice board, the problem is solved.
The system scheme of the invention combines the bus and the bus road in a cooperative manner, adopts reliable CAN communication, and realizes a bus-mounted guideboard product integrating guideboard display and traffic light prompt.
Disclosure of Invention
Aiming at the technical problems in the related art, the invention provides a vehicle-mounted traffic information prompting guideboard system based on a vehicle-road cooperative scene, which can overcome the defects of the prior art.
In order to achieve the technical purpose, the technical scheme of the invention is realized as follows:
a vehicle-mounted traffic information prompting guideboard system based on a vehicle-road coordination scene comprises a guideboard lamp panel, a power supply module, a guideboard control card, and an association unit comprising a road side module, a vehicle-mounted module and an original vehicle service module,
the power supply module is used for supplying power to the guideboard lamp panel and the guideboard control card;
the guideboard control card controls the display of the guideboard lamp panel through an 75/08 interface;
the roadside module acquires traffic signal lamp information at a road side and communicates with a vehicle;
the vehicle-mounted module is a vehicle-mounted MEC in the bus and is communicated with the guideboard through a CAN bus;
the original vehicle service module is a vehicle-mounted dispatching host and a station reporter of the public traffic service, and shares a CAN bus with the guideboard and the vehicle-mounted MEC.
Further, in the original bus service module, the bus information is sent by the bus scheduling host through the CAN bus.
Further, its characterized in that, in former car business module, traffic lights information by on-vehicle MEC sends through same CAN bus, the signpost receives CAN bus data to show on the signpost lamp plate.
Furthermore, the street nameplate lamp panel is an LED lamp panel with a paster capable of changing colors.
Further, the wire harness interface of the guideboard comprises a 24V vehicle-mounted power supply interface, a communication interface and an IO interface for braking and steering.
The invention has the beneficial effects that: by adopting the CAN communication mode, the problem of data conflict is solved, traffic light information is timely and effectively displayed, congestion communication cannot be caused to a communication line through the characteristic that the priority level is low and the avoidance priority level is high in CAN bus data communication, the bus information prompt and the traffic light information prompt are realized under the condition of saving cost, the application of a vehicle-road cooperation technology and a reliable communication technology in the public field is promoted, and a vehicle-road cooperation system is constructed.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
Fig. 1 is a schematic diagram illustrating service communication adaptation between a guideboard and an original vehicle of a vehicle-mounted traffic information prompting guideboard system based on a vehicle-road cooperation scene according to an embodiment of the present invention.
Fig. 2 is a schematic diagram of an internal structure of a guideboard of the vehicle-mounted traffic information prompting guideboard system based on the vehicle-road cooperation scene according to the embodiment of the present invention.
Fig. 3 is a block diagram of an original vehicle service structure of a vehicle-mounted traffic information prompting guideboard system based on a vehicle-road cooperation scenario according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments that can be derived by one of ordinary skill in the art from the embodiments given herein are intended to be within the scope of the present invention.
The invention uses a comprehensive method that the bus-road cooperation wireless communication, the vehicle-mounted serial port communication and the vehicle-mounted CAN communication drive the guideboard to simultaneously display the bus operation information and the intersection traffic light information, integrates the bus-mounted rear guideboard and the traffic light notice board according to the traffic light notice board operated by the bus line to realize an integrated guideboard, and realizes the bus information display and the traffic light information display through the bus-road cooperation technology and the vehicle-mounted Controller Area Network (CAN).
The vehicle-mounted traffic information prompting guideboard system based on the vehicle-road collaborative scene comprises a guideboard lamp panel, a power supply module and a guideboard control card, and the association unit comprises a road side module, a vehicle-mounted module and an original vehicle service module. The power supply module is used for supplying power to the guideboard lamp panel and the guideboard control card; the guideboard control card controls the display of the guideboard lamp panel through an 75/08 interface; the road side module acquires traffic signal lamp information at a road side and communicates with a vehicle; the vehicle-mounted module is a vehicle-mounted MEC in the bus and is communicated with the guideboard through a CAN bus; the original vehicle service module is a vehicle-mounted dispatching host and a station reporter of the public traffic service, and shares a CAN bus with the guideboard and the vehicle-mounted MEC. Wherein the vehicle-mounted MEC (Mobile Edge computing) is a mobile Edge computing unit installed in a vehicle.
As shown in fig. 3, the bus and the roadside device acquire traffic light data in the current direction through the cooperative wireless communication between the bus and the road. The vehicle-mounted dispatching host, the station reporter, the guideboard and the vehicle-mounted MEC share a CAN bus. The bus information (such as line numbers, head and tail stations and the like) is sent by the bus dispatching host through the CAN bus, the traffic light information is sent by the vehicle-mounted MEC through the same CAN bus, and the guideboard receives CAN bus data and correspondingly displays the CAN bus data on the guideboard lamp panel.
As shown in fig. 1, the guideboard includes a guideboard control card, a power supply, and a guideboard lamp panel. The guideboard lamp panel is an LED lamp panel with a color changeable patch; the control card controls the display of the lamp panel through an 75/08 interface, and the power supply of the control card and the power supply of the guideboard lamp panel are both provided by a power supply module; the wire harness interface of the guideboard comprises a 24V vehicle-mounted power supply, a communication interface, an IO interface for braking and steering, and interfaces for other purposes (such as a photosensitive control element for automatically adjusting the brightness of the guideboard).
The road side module also comprises a signal machine system capable of outputting traffic light information, wherein the signal machine needs to provide information such as the current signal phase state, timing and the like and is used for displaying the traffic light information by the vehicle-mounted guideboard; the road side MEC and the matched vehicle and road cooperative communication unit are responsible for processing traffic light information and analyzing data corresponding to vehicles.
Because the on-board communication and original vehicle service module needs to realize the notification of the public transportation information and the traffic light information at the same time, the on-board reliability CAN communication solves the problem of data conflict through a Controller Area Network (CAN) communication mode, and the traffic light information is effectively displayed in time.
The can bus is a serial communication protocol bus for real-time application, can use twisted pair wire to transmit signal, and is one of the most widely used field buses in the world. The CAN protocol is used for communication between various components in an automobile, thereby replacing expensive and bulky wiring harnesses. The robustness of the protocol extends its use to other automation and industrial applications. The features of the CAN protocol include serial data communication for integrity, real-time support, transmission rates up to 1Mb/s, and 11-bit addressing and error detection capabilities.
Compared with an RS485 bus form, under the condition that RS485 has the same baud rate, devices on the bus need to distinguish master and slave, otherwise, RS485 data collision is caused due to the fact that multiple devices send data simultaneously, and data transmission failure is caused due to data errors.
The CAN bus data communication has no master-slave division, any node CAN initiate data communication to any other node(s), the communication order is determined according to the priority order of the information of each node, and when the high-priority node information simultaneously initiates communication by a plurality of nodes in 134 mu s communication, the low-priority node information has high avoidance priority, and cannot cause congestion communication to a communication line.
The CAN bus is suitable for large-data-volume short-distance communication or long-distance small-data-volume communication, has higher real-time requirement, and is used in the field with multiple masters and multiple slaves or equal nodes.
The applicable scene of the invention is that besides the solution of the whole vehicle CAN bus of the company (inventor), aiming at the situation that the prior vehicle-mounted RS485 communication mode on the market announces the public transportation information, the product simultaneously provides two communication modes of RS485 and CAN, and CAN simultaneously use two interfaces, namely, the announcement of the public transportation information is realized to the original vehicle RS485 and the announcement of the traffic light information of the vehicle-mounted MEC of the own vehicle-mounted MEC is realized, as shown in figure 2. Under this use scene, CAN adapt former bus dispatching host computer to additionally establish a CAN transmission cable between on-vehicle MEC and signpost, CAN realize traffic lights instruction function.
In order to facilitate understanding of the above-described technical aspects of the present invention, the above-described technical aspects of the present invention will be described in detail below in terms of specific usage.
Firstly, the guideboard is arranged in a vehicle and behind the tail of the vehicle, and the lamp panel faces the outside of the vehicle; connecting a cable, wherein a CAN interface of the cable is butted with a CAN bus of a vehicle; IO of the product is in butt joint with a brake signal line and a steering signal line of the vehicle; and if the RS485 is required to be docked, the RS485 of the product is docked to the RS485 bus of the vehicle.
The invention adopts the cooperation of the bus and the road, embedded control, light prompt and the like to realize that the guideboard displays the bus line information, the first and last station information and the brake steering information when the bus runs normally, and displays the traffic light information of the current intersection when the bus arrives at the intersection. The invention can be applied to the information prompt of buses and traffic lights at intersections, and is a social service product combining two aspects of buses and roads.
In summary, according to the technical scheme of the invention, the data conflict problem is solved by adopting the CAN communication mode, the traffic light information is effectively displayed in time, the traffic light information is not congested and communicated on the communication line by the characteristic that the priority is low and the avoidance priority is high in CAN bus data communication, the prompt of the bus information and the traffic light information is realized under the condition of saving cost, the application of the vehicle-road cooperation technology and the reliable communication technology in the public field is promoted, and the vehicle-road cooperation system is constructed.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (5)
1. A vehicle-mounted traffic information prompting guideboard system based on a vehicle-road cooperation scene is characterized by comprising a guideboard lamp panel, a power supply module and a guideboard control card, wherein an association unit comprises a road side module, a vehicle-mounted module and an original vehicle service module,
the power supply module is used for supplying power to the guideboard lamp panel and the guideboard control card;
the guideboard control card controls the display of the guideboard lamp panel through an 75/08 interface;
the roadside module acquires traffic signal lamp information at a road side and communicates with a vehicle;
the vehicle-mounted module is a vehicle-mounted MEC in the bus and is communicated with the guideboard through a CAN bus;
the original vehicle service module is a vehicle-mounted dispatching host and a station reporter of the public traffic service, and shares a CAN bus with the guideboard and the vehicle-mounted MEC.
2. The vehicle-mounted traffic information prompting guideboard system based on the vehicle-road cooperative scene as claimed in claim 1, wherein in the original vehicle service module, the bus information is sent by the bus scheduling host through a CAN bus.
3. The vehicle-mounted traffic information prompting guideboard system based on the vehicle-road cooperative scene as claimed in claim 1, wherein in an original vehicle service module, traffic light information is sent by the vehicle-mounted MEC through the same CAN bus, and the guideboard receives CAN bus data and displays the CAN bus data on a guideboard lamp panel.
4. The vehicle-mounted traffic information prompting guideboard system based on the vehicle-road cooperative scene is characterized in that the guideboard lamp panel is an LED lamp panel with a color changeable by adopting a patch.
5. The vehicle-mounted traffic information prompting guideboard system based on the vehicle-road cooperative scene is characterized in that a wiring harness interface of the guideboard comprises a 24V vehicle-mounted power supply interface, a communication interface and an IO interface for braking and steering.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110657155.2A CN113538955A (en) | 2021-06-11 | 2021-06-11 | Vehicle-mounted traffic information prompting guideboard system based on vehicle-road collaborative scene |
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| CN202110657155.2A CN113538955A (en) | 2021-06-11 | 2021-06-11 | Vehicle-mounted traffic information prompting guideboard system based on vehicle-road collaborative scene |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101131795A (en) * | 2007-09-27 | 2008-02-27 | 北京航空航天大学 | Intelligent public transportation system and implementing method thereof |
| CN102035707A (en) * | 2010-12-08 | 2011-04-27 | 成电汽车电子产业园(昆山)有限公司 | Communication real-time guaranteeing method of vehicle-mounted CAN (Controller Area Network) |
| CN202584618U (en) * | 2012-05-07 | 2012-12-05 | 上海凯伦电子技术有限公司 | Vehicle-mounted LED (Light Emitting Diode) guideboard based on mixed dot matrix and multicolor display technology |
| CN103984254A (en) * | 2014-05-22 | 2014-08-13 | 张家港亚楠汽车电器有限公司 | Guideboard protocol transfer controller |
| CN111554108A (en) * | 2020-04-30 | 2020-08-18 | 深圳市金溢科技股份有限公司 | Traffic signal lamp display method, vehicle-mounted unit, road side unit and system |
-
2021
- 2021-06-11 CN CN202110657155.2A patent/CN113538955A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101131795A (en) * | 2007-09-27 | 2008-02-27 | 北京航空航天大学 | Intelligent public transportation system and implementing method thereof |
| CN102035707A (en) * | 2010-12-08 | 2011-04-27 | 成电汽车电子产业园(昆山)有限公司 | Communication real-time guaranteeing method of vehicle-mounted CAN (Controller Area Network) |
| CN202584618U (en) * | 2012-05-07 | 2012-12-05 | 上海凯伦电子技术有限公司 | Vehicle-mounted LED (Light Emitting Diode) guideboard based on mixed dot matrix and multicolor display technology |
| CN103984254A (en) * | 2014-05-22 | 2014-08-13 | 张家港亚楠汽车电器有限公司 | Guideboard protocol transfer controller |
| CN111554108A (en) * | 2020-04-30 | 2020-08-18 | 深圳市金溢科技股份有限公司 | Traffic signal lamp display method, vehicle-mounted unit, road side unit and system |
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Application publication date: 20211022 |
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