CN104715603A - Road monitoring method, photographic device, car-mounted terminal and system - Google Patents
Road monitoring method, photographic device, car-mounted terminal and system Download PDFInfo
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- CN104715603A CN104715603A CN201310688042.4A CN201310688042A CN104715603A CN 104715603 A CN104715603 A CN 104715603A CN 201310688042 A CN201310688042 A CN 201310688042A CN 104715603 A CN104715603 A CN 104715603A
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- road traffic
- information
- traffic condition
- road
- car
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Classifications
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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
- G08G1/0962—Arrangements for giving variable traffic instructions having an indicator mounted inside the vehicle, e.g. giving voice messages
- G08G1/0967—Systems involving transmission of highway information, e.g. weather, speed limits
- G08G1/096766—Systems involving transmission of highway information, e.g. weather, speed limits where the system is characterised by the origin of the information transmission
- G08G1/096783—Systems involving transmission of highway information, e.g. weather, speed limits where the system is characterised by the origin of the information transmission where the origin of the information is a roadside individual element
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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
- G08G1/0108—Measuring and analyzing of parameters relative to traffic conditions based on the source of data
- G08G1/0116—Measuring and analyzing of parameters relative to traffic conditions based on the source of data from roadside infrastructure, e.g. beacons
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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
- G08G1/0133—Traffic data processing for classifying traffic situation
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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
- G08G1/04—Detecting movement of traffic to be counted or controlled using optical or ultrasonic detectors
-
- G—PHYSICS
- G08—SIGNALLING
- G08G—TRAFFIC CONTROL SYSTEMS
- G08G1/00—Traffic control systems for road vehicles
- G08G1/09—Arrangements for giving variable traffic instructions
- G08G1/0962—Arrangements for giving variable traffic instructions having an indicator mounted inside the vehicle, e.g. giving voice messages
-
- G—PHYSICS
- G08—SIGNALLING
- G08G—TRAFFIC CONTROL SYSTEMS
- G08G1/00—Traffic control systems for road vehicles
- G08G1/09—Arrangements for giving variable traffic instructions
- G08G1/0962—Arrangements for giving variable traffic instructions having an indicator mounted inside the vehicle, e.g. giving voice messages
- G08G1/0967—Systems involving transmission of highway information, e.g. weather, speed limits
- G08G1/096708—Systems involving transmission of highway information, e.g. weather, speed limits where the received information might be used to generate an automatic action on the vehicle control
- G08G1/096716—Systems involving transmission of highway information, e.g. weather, speed limits where the received information might be used to generate an automatic action on the vehicle control where the received information does not generate an automatic action on the vehicle control
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/18—Closed-circuit television [CCTV] systems, i.e. systems in which the video signal is not broadcast
Abstract
The invention discloses a road monitoring method. The road monitoring method includes the following steps that a photographic device collects in-time road videos; the photographic device performs picture analysis on video pictures, judges the current jamming situation of a road and generates information describing the road traffic situation; the photographic device searches for nearby car-mounted terminals and other photographic devices, sends the information generated locally and used for describing the road traffic situation to other photographic devices, and receives the information sent by other photographic devices and used for describing the road traffic situation; all the photographic devices send the received and the locally generated information describing the road traffic situation to the corresponding nearby car-mounted terminals. The invention further discloses the photographic device, the car-mounted terminals and a road monitoring system. The road monitoring method, the photographic device, the car-mounted terminals and the road monitoring system can enhance timeliness of data processing, improve real-time performance of information and relieve processing pressure of a background control center.
Description
Technical field
The present invention relates to technical field of video monitoring, more specifically, relate to a kind of road monitoring method, camera head, car-mounted terminal and system.
Background technology
Along with the continuous increase of automobile pollution, urban highway traffic pressure is more and more large, how can take effective measures the vehicle dredged on road, to improve urban traffic environment, become an extremely urgent urgent problem.
Present stage has proposed many solutions, comprising: utilize GPS or architecture technology, carry out background analysis for the data collected, and calculates Vehicle Speed, judges road congestion conditions; And by the camera head that road cross is disposed, the real-time road traffic video pictures collected is transferred to background control center, carries out graphical analysis by background control center, judge road congestion conditions etc.On the basis of the above, Real-time Traffic Information is shown by the display screen on road, or is pushed to car-mounted terminal by base station, thus driving vehicle is induced.
Above-mentioned technology all needs backstage powerful data to store and analytic function supports, and easily causes data-pushing time delay and back-end data processing pressure is large, the generation that runs the situation such as steady not.For the future of large data, based on the lifting at full speed of embedded device performance, how to strengthen the promptness of data processing, promote the real-time of information, and alleviate background process pressure, become the problem needing solution badly.
Summary of the invention
Fundamental purpose of the present invention is to provide a kind of road monitoring method, to be intended to solve in prior art data-pushing time delay and back-end data processing pressure is large, run technical matters not stably.
In order to realize goal of the invention, the invention provides a kind of road monitoring method, comprising the steps:
Camera head gathers road real-time video;
Camera head carries out graphical analysis to video pictures, judges the congestion of present road, generates the information describing road traffic condition;
Camera head searches contiguous car-mounted terminal and other camera heads, and the information of the description road traffic condition generated this locality is sent to other camera heads and receives the information of the description road traffic condition that other camera heads send;
Each camera head is sent to corresponding contiguous car-mounted terminal by what receive with the information of the described description road traffic condition of this locality generation.
Preferably, comprise after performing each camera head and the information of described description road traffic condition generated with this locality received is sent to the step of corresponding contiguous car-mounted terminal:
Car-mounted terminal receives the information describing road traffic condition;
Describing that the information of road traffic gathers and analyzes to receiving, generating the text of road traffic condition, voice or image shows result;
Present road traffic and optimum travel route is shown by the mode of text, voice or image.
Preferably, said method is further comprising the steps of:
The information describing road traffic condition is sent to background control center by camera head;
The information of background control center to described description road traffic condition gathers, shows or secondary analysis.
Preferably, the information of described description road traffic condition is text message or data message.
The present invention also provides a kind of camera head, comprises image capture module, for gathering road real-time video; It also comprises:
Image analysis module, for carrying out graphical analysis to video pictures, judges the congestion of present road, generates the information describing road traffic condition;
Data exchange module, for searching contiguous car-mounted terminal and other camera heads, the information of the description road traffic condition generated this locality is sent to other camera heads and receives the information of the description road traffic condition that other camera heads send; And
Corresponding contiguous car-mounted terminal is sent to the information of the described description road traffic condition of this locality generation by what receive;
Described data exchange module is also for being sent to background control center by the information describing road traffic condition.
The invention provides a kind of car-mounted terminal, it comprises:
Data reception module, for receiving the information of the description road traffic condition that camera head sends;
Data analysis module, for gathering the information of described description road traffic condition and analyze, generates the text of road traffic condition, voice or image shows result;
Data display module, for showing present road traffic and optimum travel route by the mode of text, voice or image.
The present invention also provides a kind of preventing road monitoring system, comprises camera head and car-mounted terminal; Described camera head comprises:
Image capture module, for gathering road real-time video;
Image analysis module, for carrying out graphical analysis to video pictures, judges the congestion of present road, generates the information describing road traffic condition;
Data exchange module, for searching contiguous car-mounted terminal and other camera heads, the information of the description road traffic condition generated this locality is sent to other camera heads and receives the information of the description road traffic condition that other camera heads send; And
Corresponding contiguous car-mounted terminal is sent to the information of the described description road traffic condition of this locality generation by what receive.
Preferably, described car-mounted terminal comprises:
Data reception module, for receiving the information of described description road traffic condition;
Data analysis module, for gathering the information of described description road traffic condition and analyze, generates the text of road traffic condition, voice or image shows result;
Data display module, for showing present road traffic and optimum travel route by the mode of text, voice or image.
Preferably, above-mentioned preventing road monitoring system also comprises:
Background control center, for gathering the information of described description road traffic condition, show or secondary analysis.
Preferably, the information of described description road traffic condition is text message or data message.
As from the foregoing, the present invention gathers road real-time video information by camera head, and video pictures is analyzed, generate the information of description road traffic condition and send to car-mounted terminal, the camera head that is operated in of a part of data processing is completed, avoids all by background control center process data, effectively can strengthen the promptness of data processing, improve the real-time of information, alleviate the processing pressure of background control center.
Accompanying drawing explanation
Fig. 1 is the schematic flow sheet of road monitoring method one embodiment of the present invention;
Fig. 2 is the step detail flowchart that in road monitoring method one embodiment of the present invention, car-mounted terminal is shown information;
Fig. 3 is the step detail flowchart that in road monitoring method one embodiment of the present invention, contiguous car-mounted terminal searched by camera head;
Fig. 4 is the schematic flow sheet of another embodiment of road monitoring method of the present invention;
Fig. 5 is the structured flowchart of camera head one embodiment of the present invention;
Fig. 6 is the structured flowchart of car-mounted terminal one embodiment of the present invention;
Fig. 7 is the structured flowchart of preventing road monitoring system one embodiment of the present invention;
Fig. 8 is the composition schematic diagram of another embodiment of preventing road monitoring system of the present invention.
The realization of the object of the invention, functional characteristics and advantage will in conjunction with the embodiments, are described further with reference to accompanying drawing.
Embodiment
Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.
The embodiment of the present invention provides a kind of road monitoring method, and with reference to Fig. 1, in one embodiment, this road monitoring method comprises the steps:
Step S10, camera head gathers road real-time video;
Step S20, camera head carries out graphical analysis to video pictures, judges the congestion of present road, generates the information describing road traffic condition;
Step S30, camera head searches contiguous car-mounted terminal and other camera heads, and the information of the description road traffic condition generated this locality is sent to other camera heads and receives the information of the description road traffic condition that other camera heads send;
Step S40, each camera head is sent to corresponding contiguous car-mounted terminal by what receive with the information of the described description road traffic condition of this locality generation.
In the embodiment of the present invention, camera head comprises the camera being erected at road side, it is also loaded with image analysis software, after collecting road real-time video, this image analysis software carries out graphical analysis to video pictures, judge that present road blocks up or unimpeded, and generate the corresponding information describing road traffic condition.In addition, also data exchange module is integrated with in camera head, this data exchange module finds contiguous camera and car-mounted terminal automatically by wireless technology (such as ZigBee etc.), form a self-organizing network interconnected with contiguous camera and car-mounted terminal, thus the information of aforementioned description road traffic condition is sent to contiguous car-mounted terminal.Car-mounted terminal can show this information by modes such as voice, word and images.
The present invention gathers road real-time video information by camera head, and video pictures is analyzed, generate the information of description road traffic condition and send to car-mounted terminal, the camera head that is operated in of a part of data processing is completed, avoid all by background control center process data, effectively can strengthen the promptness of data processing, improve the real-time of information, alleviate the processing pressure of background control center.
With reference to shown in Fig. 2, in a preferred embodiment of the present invention, car-mounted terminal comprises the step that information is shown:
Step S41, receives the information describing road traffic condition;
Step S42, gathers the information of described description road traffic condition and analyzes, and generates the text of road traffic condition, voice or image shows result;
Step S43, shows present road traffic and optimum travel route by the mode of text, voice or image.
In the embodiment of the present invention, car-mounted terminal is loaded with data processing software, and this data processing software can process the information describing road traffic condition, generates text corresponding with it, voice or image shows result.Such as, block up if the content of information is road ahead, this data processing software can at the display screen display Word message of car-mounted terminal: road ahead is blocked up, or by this content by voice message user, also can block up to identify certain section to circuit filling color on the map of advancing of car-mounted terminal.
With reference to Fig. 3, in one embodiment of the present invention, above-mentioned steps S30 can comprise:
Step S31, searches contiguous camera head and car-mounted terminal;
Step S32, forms a self-organizing network interconnected with all contiguous camera heads found and car-mounted terminal.
In the embodiment of the present invention, some camera heads being integrated with data exchange module can be carried out networking by wireless technologys such as ZigBee, some camera heads are formed a self-organizing network interconnected, the information of description road traffic condition that is that generated by current camera head and that receive from contiguous camera head is sent to other contiguous cameras.Meanwhile, camera head also receives the information of contiguous camera head transmission by data exchange module, the whole network realizing information is shared, thus the road conditions of real time propelling movement many roads, so that user selects road in advance, ensure the coast is clear.
With reference to shown in Fig. 4, in one embodiment of the invention, said method is further comprising the steps of:
Step S50, the information describing road traffic condition is sent to background control center by camera head;
Step S60, background control center gathers described information, show or secondary analysis.
In the embodiment of the present invention, the information describing road traffic condition also can be sent to background control center by camera head, background control center can be analyzed according to this information, judge road congestion conditions etc., Real-time Traffic Information is shown by the display screen on road, or be pushed to car-mounted terminal by base station, thus driving vehicle is induced.
It should be noted that in the embodiment of the present invention, the information of description road traffic condition can be data message (such as hexadecimal data information) also can be text message.
The present invention also provides a kind of camera head, and with reference to shown in Fig. 5, in one embodiment, this camera head 10 comprises:
Image capture module 11, for gathering road real-time video;
Image analysis module 12, for carrying out graphical analysis to video pictures, judges the congestion of present road, generates the information describing road traffic condition;
Data exchange module 13, for searching contiguous car-mounted terminal 20 and other camera heads 10, the information of the description road traffic condition generated this locality is sent to other camera heads 10 and receives the information of the description road traffic condition that other camera heads 10 send; And
Corresponding contiguous car-mounted terminal 20 is sent to the information of the described description road traffic condition of this locality generation by what receive.
In the embodiment of the present invention, image capture module 11 can for being erected at the other camera of road, image analysis module 12 can for being carried in the image analysis software in camera head 10, after collecting road real-time video, this image analysis module 12 pairs of video pictures carry out graphical analysis, judge that present road blocks up or unimpeded, and generate the corresponding information describing road traffic condition.In addition, data exchange module 13 is also integrated with in camera head 10, this data exchange module 13 finds contiguous camera and car-mounted terminal 20 automatically by wireless communication technology (such as ZigBee etc.), with its formation self-organizing network interconnected, thus the information of aforementioned description road traffic condition is sent to contiguous car-mounted terminal 20.Car-mounted terminal 20 can show this information by modes such as voice, word and images.
The present invention also provides a kind of car-mounted terminal, and with reference to shown in Fig. 6, in a preferred embodiment of the present invention, car-mounted terminal 20 can comprise:
Data reception module 21, for receiving the information of described description road traffic condition;
Data analysis module 22, for gathering the information of described description road traffic condition and analyze, generates the text of road traffic condition, voice or image shows result;
Data display module 23, for showing present road traffic and optimum travel route by the mode of text, voice or image.
In the embodiment of the present invention, car-mounted terminal 20 is loaded with data processing software, this data processing software at least comprises the large module of data reception module 21, data analysis module 22 and data display module 23 3, the information describing road traffic condition can be processed, generate text corresponding with it, voice or image shows result.Such as, if the content describing the information of road traffic condition is that road ahead is blocked up, this data display module 23 can at the display screen display Word message of car-mounted terminal 23: road ahead is blocked up, or by this content by voice message user, also can block up to identify certain section to circuit filling color on the map of advancing of car-mounted terminal 20.
In a preferred embodiment, data exchange module 13 can be used for:
Search contiguous camera head 10 and car-mounted terminal 20;
A self-organizing network interconnected is formed with all contiguous camera heads 10 found and car-mounted terminal 20.
In the embodiment of the present invention, some camera heads 10 being integrated with data exchange module 13 can be carried out networking by wireless technologys such as ZigBee, some camera heads 10 are formed a self-organizing network interconnected, and the information of description road traffic condition that is that generated by current camera head 10 and that receive from contiguous camera head is sent to other contiguous cameras.Meanwhile, camera head 10 also receives the information of contiguous camera head transmission by data exchange module, the whole network realizing information is shared, thus the road conditions of real time propelling movement many roads, so that user selects road in advance, ensure the coast is clear.Should be noted that; data exchange module 13 of the present invention preferably adopts ZigBee communication technology with described contiguous camera head and communicating of car-mounted terminal 20; but be not limited thereto technology, all similar correlation techniques all should be limited within rights protection scope of the present invention.
The present invention also provides a kind of preventing road monitoring system, for realizing above-mentioned road monitoring method.With reference to shown in Fig. 7, this preventing road monitoring system comprises aforementioned camera head 10 and car-mounted terminal 20.In the embodiment of the present invention, principle of work and the implementation method of camera head 10 and car-mounted terminal 20 can refer to previous embodiment, do not repeat at this.The preventing road monitoring system of the embodiment of the present invention gathers road real-time video information by camera head 10, and video pictures is analyzed, generate the information of description road traffic condition and send to car-mounted terminal 20, the camera head that is operated in of a part of data processing is completed, avoid all by background control center process data, effectively can strengthen the promptness of data processing, improve the real-time of information, alleviate the processing pressure of background control center.
With reference to shown in Fig. 8, in one embodiment of the invention, above-mentioned preventing road monitoring system also can comprise:
Background control center 30, for receiving the described information that data exchange module 13 sends, gathering the information of described description road traffic condition, showing or secondary analysis.
In the embodiment of the present invention, the information describing road traffic condition also can be sent to background control center 30 by camera head 10, the information that background control center 30 can describe road traffic condition according to this is analyzed, judge road congestion conditions etc., Real-time Traffic Information is shown by the display screen on road, or be pushed to car-mounted terminal 20 by base station, thus driving vehicle is induced.
In one embodiment of the invention, the workflow of preventing road monitoring system comprises the steps:
Image capture module 11 in camera head 10 gathers road real-time video, real time video data is sent to image analysis module 12;
Image analysis module 12 pairs of video pictures carry out graphical analysis, judge the congestion of present road, generate the information describing road traffic condition, described information is sent to data exchange module 13;
Data exchange module 13 searches contiguous camera head and car-mounted terminal 20, forms a self-organizing network interconnected with described contiguous camera and car-mounted terminal;
The information of the description road traffic condition that described image analysis module 12 generates by data exchange module 13 is sent to described contiguous camera head and car-mounted terminal 20;
The data reception module 21 of car-mounted terminal 20 receives the information of the description road traffic condition that contiguous camera head sends, and the information of described description road traffic condition is forwarded to data analysis module 22;
The information of data analysis module 22 to described description road traffic condition gathers and analyzes, and generates the text of road traffic condition, voice or image shows result;
Data analysis module 22 carries out gathering and analyzing based on the information of described description road traffic condition, calculates current optimum travel route;
Described displaying result and optimum travel route are sent to data display module 23 by data analysis module 22;
Data display module 23 shows present road traffic and optimum travel route by the mode of text, voice or image.
The information of the description road traffic condition that described image analysis module 12 generates is sent to background control center 30 by data exchange module 13;
The information of background control center 30 to described description road traffic condition gathers, shows or does more deep secondary analysis.
As from the foregoing, preventing road monitoring system of the present invention gathers road real-time video information by camera head 10, and video pictures is analyzed, generate the information of description road traffic condition and send to car-mounted terminal 20, the camera head 10 that is operated in of a part of data processing is completed, avoids all by background control center process data, effectively can strengthen the promptness of data processing, improve the real-time of information, alleviate the processing pressure of background control center.
These are only the preferred embodiments of the present invention; not thereby the scope of the claims of the present invention is limited; every utilize instructions of the present invention and accompanying drawing content to do equivalent structure or equivalent flow process conversion; or be directly or indirectly used in other relevant technical fields, be all in like manner included in scope of patent protection of the present invention.
Claims (10)
1. a road monitoring method, is characterized in that, comprises the steps:
Camera head gathers road real-time video;
Camera head carries out graphical analysis to video pictures, judges the congestion of present road, generates the information describing road traffic condition;
Camera head searches contiguous car-mounted terminal and other camera heads, and the information of the description road traffic condition generated this locality is sent to other camera heads and receives the information of the description road traffic condition that other camera heads send;
Each camera head is sent to corresponding contiguous car-mounted terminal by what receive with the information of the described description road traffic condition of this locality generation.
2. road monitoring method as claimed in claim 1, is characterized in that, comprises after performing the information of each camera head by the described description road traffic condition generated with this locality received and being sent to the step of corresponding contiguous car-mounted terminal:
Car-mounted terminal receives the information describing road traffic condition;
Describing that the information of road traffic gathers and analyzes to receiving, generating the text of road traffic condition, voice or image shows result;
Present road traffic and optimum travel route is shown by the mode of text, voice or image.
3. road monitoring method as claimed in claim 1 or 2, is characterized in that, further comprising the steps of:
The information describing road traffic condition is sent to background control center by camera head;
The information of background control center to described description road traffic condition gathers, shows or secondary analysis.
4. road monitoring method as claimed in claim 3, it is characterized in that, the information of described description road traffic condition is text message or data message.
5. a camera head, comprises image capture module, for gathering road real-time video; It is characterized in that, also comprise:
Image analysis module, for carrying out graphical analysis to video pictures, judges the congestion of present road, generates the information describing road traffic condition;
Data exchange module, for searching contiguous car-mounted terminal and other camera heads, the information of the description road traffic condition generated this locality is sent to other camera heads and receives the information of the description road traffic condition that other camera heads send; And
Corresponding contiguous car-mounted terminal is sent to the information of the described description road traffic condition of this locality generation by what receive;
Described data exchange module is also for being sent to background control center by the information describing road traffic condition.
6. a car-mounted terminal, is characterized in that, comprising:
Data reception module, for receiving the information of the description road traffic condition that camera head sends;
Data analysis module, for gathering the information of described description road traffic condition and analyze, generates the text of road traffic condition, voice or image shows result;
Data display module, for showing present road traffic and optimum travel route by the mode of text, voice or image.
7. a preventing road monitoring system, is characterized in that, comprises camera head and car-mounted terminal; Described camera head comprises:
Image capture module, for gathering road real-time video;
Image analysis module, for carrying out graphical analysis to video pictures, judges the congestion of present road, generates the information describing road traffic condition;
Data exchange module, for searching contiguous car-mounted terminal and other camera heads, the information of the description road traffic condition generated this locality is sent to other camera heads and receives the information of the description road traffic condition that other camera heads send; And
Corresponding contiguous car-mounted terminal is sent to the information of the described description road traffic condition of this locality generation by what receive.
8. preventing road monitoring system as claimed in claim 7, it is characterized in that, described car-mounted terminal comprises:
Data reception module, for receiving the information of described description road traffic condition;
Data analysis module, for gathering the information of described description road traffic condition and analyze, generates the text of road traffic condition, voice or image shows result;
Data display module, for showing present road traffic and optimum travel route by the mode of text, voice or image.
9. preventing road monitoring system as claimed in claim 7 or 8, is characterized in that, also comprise:
Background control center, for gathering the information of described description road traffic condition, show or secondary analysis.
10. preventing road monitoring system as claimed in claim 9, it is characterized in that, the information of described description road traffic condition is text message or data message.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310688042.4A CN104715603A (en) | 2013-12-13 | 2013-12-13 | Road monitoring method, photographic device, car-mounted terminal and system |
| PCT/CN2014/078450 WO2014180394A1 (en) | 2013-12-13 | 2014-05-26 | Road monitoring method, image-capture device, vehicle onboard terminal and system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310688042.4A CN104715603A (en) | 2013-12-13 | 2013-12-13 | Road monitoring method, photographic device, car-mounted terminal and system |
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| CN104715603A true CN104715603A (en) | 2015-06-17 |
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| CN201310688042.4A Pending CN104715603A (en) | 2013-12-13 | 2013-12-13 | Road monitoring method, photographic device, car-mounted terminal and system |
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| WO (1) | WO2014180394A1 (en) |
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| CN106327901A (en) * | 2016-09-12 | 2017-01-11 | 四川长虹电器股份有限公司 | Safe travel system and safe travel method of preventing road congestion based on mobile terminal |
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| CN111784984B (en) * | 2020-06-09 | 2022-07-19 | 宁波吉利汽车研究开发有限公司 | Distributed early warning system, method and device |
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