CN112866382A - Traffic signal lamp state publishing method and system - Google Patents
Traffic signal lamp state publishing method and system Download PDFInfo
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- CN112866382A CN112866382A CN202110062902.8A CN202110062902A CN112866382A CN 112866382 A CN112866382 A CN 112866382A CN 202110062902 A CN202110062902 A CN 202110062902A CN 112866382 A CN112866382 A CN 112866382A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/01—Protocols
- H04L67/12—Protocols specially adapted for proprietary or special-purpose networking environments, e.g. medical networks, sensor networks, networks in vehicles or remote metering networks
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- G—PHYSICS
- G08—SIGNALLING
- G08G—TRAFFIC CONTROL SYSTEMS
- G08G1/00—Traffic control systems for road vehicles
- G08G1/09—Arrangements for giving variable traffic instructions
- G08G1/095—Traffic lights
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J3/00—Time-division multiplex systems
- H04J3/02—Details
- H04J3/06—Synchronising arrangements
- H04J3/0635—Clock or time synchronisation in a network
- H04J3/0638—Clock or time synchronisation among nodes; Internode synchronisation
- H04J3/0658—Clock or time synchronisation among packet nodes
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/50—Network services
- H04L67/52—Network services specially adapted for the location of the user terminal
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Abstract
The invention discloses a traffic signal lamp state issuing method, which comprises a providing end, a receiving end and a server end of a traffic signal lamp state; clock synchronization of a providing end and a receiving end; the providing end acquires the state information of the traffic signal lamp and actively or passively sends the state information to the server end; the server receives and manages the state information sent by the providing end, and actively or passively sends the state information to the receiving end; and the receiving end calculates the current color and the remaining time of the corresponding traffic signal lamp according to the received state information and the local clock. The invention also discloses a traffic signal lamp state issuing system which is composed of a traffic signal lamp state providing module, a server module, a traffic signal lamp state receiving module and a clock synchronization module and respectively completes the providing end, the server end, the receiving end and the clock synchronization function in the method. The method and the system disclosed by the invention can economically, conveniently, safely and reliably realize the release of the state of the traffic signal lamp.
Description
Technical Field
The invention relates to the field of vehicles and intelligent traffic, in particular to a method and a system for releasing the state of a traffic signal lamp.
Background
The method has the advantages that the traffic signal lamp state of the front intersection is mastered in advance or in real time, and the method has important significance for intelligent traffic participants such as common drivers or unmanned vehicles. For example, for an unmanned vehicle, the state of a traffic light is grasped in advance, so that the current driving behavior can be optimized, the speed is properly accelerated to pass through the intersection in time, or the unmanned vehicle is driven at a lower speed which is safer and more energy-saving in advance when the unmanned vehicle does not grasp that the unmanned vehicle passes through the intersection. For a common driver, if the state of the signal lamp can be grasped by other modes except observing the signal lamp by naked eyes, the situations of mistakenly running a red light and the like caused by the fact that a large vehicle in front obstructs sight can be avoided.
Several methods for acquiring road traffic information including traffic lights by intelligent vehicles exist, for example, in a traffic light information fusion decision method facing intelligent internet vehicles (application number: CN202011093467.7) and a traffic signal state estimation method, a vehicle control method, a vehicle and a storage medium (application number: cn202010965612.x), methods for acquiring or estimating the states of the traffic lights are involved. However, the existing method mainly depends on the sensing unit of the intelligent vehicle and the single-vehicle intelligence, or depends on the interaction between the road side facilities of the road where the vehicle is located or other intelligent vehicles around. The methods have higher requirements on the intelligent level of the vehicle, and require specific sensors and corresponding processing programs, so that the vehicle purchasing and using costs of vehicle owners are increased; potential safety hazards and risks may be caused by interaction with roadside facilities or other intelligent vehicles; furthermore, the resulting traffic signal information is only an estimate of the actual information.
Therefore, there is a need for a more economical, convenient, safe and reliable way to provide traffic participants with status information of traffic lights at relevant intersections without major changes to existing road infrastructure and vehicles.
Disclosure of Invention
The invention aims to solve the technical problem of finding a method for publishing the traffic signal lamp state, and providing traffic signal lamp state information of relevant intersections for traffic participants.
In order to solve the technical problem, the invention provides a traffic signal lamp state issuing method and a traffic signal lamp state issuing system, which specifically comprise the following steps:
1. a traffic signal lamp state publishing method is characterized by comprising the following steps:
s1: the traffic signal lamp state providing end acquires the traffic signal lamp state information and sends the information to the server end;
s2: the server side receives and manages the traffic signal lamp state information sent by the traffic signal lamp state providing side, and sends the traffic signal lamp state information to a traffic signal lamp state receiving side;
s3: and the traffic signal lamp state receiving end receives the traffic signal lamp state information and calculates the color and the remaining time of the traffic signal lamp corresponding to the received traffic signal lamp state information according to the received traffic signal lamp state information and the local clock of the traffic signal lamp state receiving end.
2. The traffic signal lamp status issuing method according to claim 1, wherein the traffic signal lamp status information includes: the traffic signal lamp state providing end manages the respective identification numbers of one or more traffic signal lamps, the duration setting schemes of red, yellow and green lamps and the time for starting the duration setting schemes.
3. The method for releasing the state of the traffic signal lamp in the 1. is characterized in that the clocks of the providing end of the state of the traffic signal lamp and the receiving end of the state of the traffic signal lamp are kept synchronous.
4. The method for releasing the status of the traffic signal lamp according to claim 1, wherein the status of the traffic signal lamp is periodically and actively sent to the server by the status provider, or the status of the traffic signal lamp is actively sent to the server when the duration setting scheme is changed, or the server actively sends a request to the status of the traffic signal lamp to obtain the status of the traffic signal lamp.
5. The method for releasing the status of the traffic signal lamp in claim 1, wherein the receiving end of the status of the traffic signal lamp can actively request the status information of the traffic signal lamp from the server or passively receive the status information of the traffic signal lamp sent by the server.
6. A traffic signal status issuing system, characterized in that the system comprises: the system comprises a traffic signal lamp state providing module, a server module, a traffic signal lamp state receiving module and a clock synchronization module;
the traffic signal lamp state providing module acquires the traffic signal lamp state information and sends the information to the server module in the mode of 4;
the server module receives and manages the traffic signal lamp state information sent by the traffic signal lamp state providing module, and actively sends the traffic signal lamp state information to the traffic signal lamp state receiving module or sends the traffic signal lamp state information to the traffic signal lamp state receiving module according to the request of the traffic signal lamp state receiving module;
the traffic signal lamp state receiving module receives the traffic signal lamp state information and calculates the color and the remaining time of a traffic signal lamp corresponding to the received traffic signal lamp state information according to the method in the step 1;
the clock synchronization module realizes the clock synchronization of the traffic signal lamp state providing module and the traffic signal lamp state receiving module.
In conclusion, the method and the system provided by the invention can economically, conveniently, safely and reliably realize the release of the traffic signal lamp state.
Drawings
FIG. 1 is a general block diagram of the method proposed in the present invention;
FIG. 2 is a block diagram of the system proposed in the present invention;
FIG. 3 is a system configuration diagram according to a first embodiment;
fig. 4 is a system configuration diagram of the second embodiment.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the embodiments described herein are illustrative only and are not limiting upon the present invention.
The general block diagram of the method of the present invention is shown in fig. 1.
The structural block diagram of the system provided by the invention is shown in FIG. 2.
1. Example one
The system structure of the first embodiment is shown in fig. 3.
The traffic light state providing module in the first embodiment is composed of a traffic light controller 100, a GPRS module 101, and a beidou positioning module 102. The traffic light controller 100 also receives a request for acquiring traffic light state information from the server 110 through the GPRS module 101 while controlling the traffic light, and transmits the traffic light state information to the server 110. When the traffic light duration setting scheme is changed or a set time period has elapsed since the traffic light status information was successfully transmitted last time, the traffic light controller 100 transmits the traffic light status information to the server 110 through the GPRS module 101.
The server module is constituted by a server 110. The server 110 manages the received traffic signal status information. If a traffic light controller 100 has not actively transmitted new status information for a set period of time since the last transmission of traffic light status information, the server 110 will actively transmit a request for acquiring new traffic light status to the traffic light controller 100, and if still failed to reply, it is considered that there may be a failure in the traffic light controller 100 and an alarm is given accordingly. On the other hand, the server 110 receives a request for obtaining the nearby traffic light state information from the navigation APP of the mobile device 120, retrieves the relevant traffic light state information through the geographic information database and the managed traffic light state information, and replies to the mobile device 120 through the mobile wireless network.
The traffic signal status receiving module is constituted by the mobile device 120. The navigation APP of the mobile device 120 locally maintains a library of nearby traffic light state information. The navigation APP obtains the current location according to the Beidou navigation system 130, and retrieves and obtains the traffic signal lamps in the nearby set range. If the retrieved status information of some traffic lights does not exist in the local traffic light status information base, or the time for acquiring the status information exceeds the set time from the current time, the navigation APP of the mobile device 120 will request the status information of these traffic lights from the server 110 through the mobile wireless network.
After the navigation APP of the mobile device 120 acquires the state information of the traffic signal within the set range, the current state of the traffic signal can be calculated according to the duration setting scheme and the scheme starting time in the state information of the traffic signal. For example, assume that the duration setting scheme of the traffic light ahead of the location of the mobile device 120 is 30s for green, 3s for yellow, and 60s for red, the activation time of the scheme (the provider time of switching to green when the scheme is first used) is 20 minutes and 38 seconds at 10 hours on day, and the current time of the mobile device 120 is 10 minutes and 14 seconds at 45 minutes at 10 hours. Since the clocks of the mobile device 120 and the traffic signal controller 100 are synchronized, it is stated that the current time is 1476s after the activation time of the scheme, the scheme has been executed for 15 full cycles, the current cycle has been executed for 81s, and thus the current signal is red, to switch to green or 12 s.
The clock synchronization module is composed of the beidou positioning system 130, the beidou positioning module 102 of the traffic signal lamp controller 100 and the beidou positioning module of the mobile device 120. The clock synchronization of the traffic signal lamp controller 100 and the mobile device 120 is realized through the time service function of the beidou navigation system 130.
2. Example two
The system structure of the second embodiment is shown in fig. 4.
The traffic signal lamp state providing module and the server module in the second embodiment are composed of an intersection camera 200, a traffic signal lamp state processor 201 and a WIFI module 202, the traffic signal lamp state providing module and the server module are physically integrated, and the two modules are logically distinguished. The intersection camera 200 shoots the traffic signal lamp of the intersection, the shot image is sent to the traffic signal lamp state processor 201, and the traffic signal lamp state information is obtained through the image processing and analyzing program on the traffic signal lamp state processor 201; the traffic signal lamp state processor 201 communicates with the vehicle-mounted computer 220 nearby through the WIFI module 202, and the traffic signal lamp state information at the intersection is sent.
The traffic signal lamp state receiving module is composed of a vehicle-mounted computer 220. When the vehicle arrives near the intersection, the on-board computer 220 senses and receives the traffic signal lamp state information sent by the traffic signal lamp state processor 201, then calculates the state of each current traffic signal lamp at the intersection, and displays the state on the display screen of the on-board computer 220.
The clock synchronization module is composed of an NTP network time service server 210, a traffic signal lamp state processor 201 and an on-board computer 220. The traffic signal lamp state processor 201 is connected with the NTP network time service server 210 through a broadband network, and obtains time service from the NTP network time service server 210. Then, the traffic signal status processor 201 itself also serves as an NTP time service server to provide time service to the in-vehicle computer 220. Since the traffic signal state providing module is located in the traffic signal state processor 201, the clock synchronization of the traffic signal state providing module and the traffic signal state receiving module is realized.
The above description is illustrative and not restrictive. From the foregoing description, those skilled in the art will recognize that many variations and modifications of the present invention, as well as many specific implementations and approaches based on the structural framework of the method and system of the present invention, are possible and within the spirit and scope of the invention.
Claims (6)
1. A traffic signal lamp state publishing method is characterized by comprising the following steps:
s1: the traffic signal lamp state providing end acquires the traffic signal lamp state information and sends the information to the server end;
s2: the server side receives and manages the traffic signal lamp state information sent by the traffic signal lamp state providing side, and sends the traffic signal lamp state information to a traffic signal lamp state receiving side;
s3: and the traffic signal lamp state receiving end receives the traffic signal lamp state information and calculates the color and the remaining time of the traffic signal lamp corresponding to the received traffic signal lamp state information according to the received traffic signal lamp state information and the local clock of the traffic signal lamp state receiving end.
2. The method according to claim 1, wherein the traffic signal status information comprises: the traffic signal lamp state providing end manages the respective identification numbers of one or more traffic signal lamps, the duration setting schemes of red, yellow and green lamps and the time for starting the duration setting schemes.
3. The method as claimed in claim 1, wherein the clocks at the traffic signal status providing end and the traffic signal status receiving end are kept synchronized.
4. The method according to claim 1, wherein the traffic signal status provider is capable of periodically and actively sending the traffic signal status information to the server, or actively sending the traffic signal status information to the server when the duration setting scheme is changed, or actively sending a request to the traffic signal status provider by the server to obtain the traffic signal status information.
5. The method as claimed in claim 1, wherein the receiving end of the traffic signal status can actively request the server end for the traffic signal status information, or passively receive the traffic signal status information sent by the server end.
6. A traffic signal status issuing system, characterized in that the system comprises: the system comprises a traffic signal lamp state providing module, a server module, a traffic signal lamp state receiving module and a clock synchronization module;
the traffic light state providing module acquires the traffic light state information and sends the information to the server module according to the mode of claim 4;
the server module receives and manages the traffic signal lamp state information sent by the traffic signal lamp state providing module, and actively sends the traffic signal lamp state information to the traffic signal lamp state receiving module or sends the traffic signal lamp state information to the traffic signal lamp state receiving module according to the request of the traffic signal lamp state receiving module;
the traffic signal lamp state receiving module receives the traffic signal lamp state information and calculates the color and the remaining time of a traffic signal lamp corresponding to the received traffic signal lamp state information according to the method of claim 1;
the clock synchronization module realizes the clock synchronization of the traffic signal lamp state providing module and the traffic signal lamp state receiving module.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110062902.8A CN112866382A (en) | 2021-01-18 | 2021-01-18 | Traffic signal lamp state publishing method and system |
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| CN202110062902.8A CN112866382A (en) | 2021-01-18 | 2021-01-18 | Traffic signal lamp state publishing method and system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114743387A (en) * | 2022-05-12 | 2022-07-12 | 苏州天微至胜运动控制技术有限公司 | Intelligent traffic guidance control system and guidance method |
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| CN109410604A (en) * | 2018-12-25 | 2019-03-01 | 重庆长安汽车股份有限公司 | Traffic lights information acquisition device and method |
| CN110246350A (en) * | 2018-03-08 | 2019-09-17 | 上海博泰悦臻网络技术服务有限公司 | A kind of traffic lights information acquisition method and system, car-mounted terminal |
| CN112150831A (en) * | 2020-10-10 | 2020-12-29 | 广州知弘科技有限公司 | Big data-based smart city street lamp information control processing method |
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2021
- 2021-01-18 CN CN202110062902.8A patent/CN112866382A/en active Pending
Patent Citations (5)
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| US20090115632A1 (en) * | 2007-11-01 | 2009-05-07 | Lg Electronics Inc. | Terminal and computer program product for receiving traffic information, method of providing signal light information, and method of guiding signal |
| WO2018201835A1 (en) * | 2017-05-03 | 2018-11-08 | 腾讯科技（深圳）有限公司 | Signal light state recognition method, device and vehicle-mounted control terminal and motor vehicle |
| CN110246350A (en) * | 2018-03-08 | 2019-09-17 | 上海博泰悦臻网络技术服务有限公司 | A kind of traffic lights information acquisition method and system, car-mounted terminal |
| CN109410604A (en) * | 2018-12-25 | 2019-03-01 | 重庆长安汽车股份有限公司 | Traffic lights information acquisition device and method |
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| CN114743387A (en) * | 2022-05-12 | 2022-07-12 | 苏州天微至胜运动控制技术有限公司 | Intelligent traffic guidance control system and guidance method |
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Application publication date: 20210528 |