CN109147321A - ITS new model and its construction method and intelligent transportation system under Internet of Things - Google Patents
ITS new model and its construction method and intelligent transportation system under Internet of Things Download PDFInfo
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- CN109147321A CN109147321A CN201810963651.9A CN201810963651A CN109147321A CN 109147321 A CN109147321 A CN 109147321A CN 201810963651 A CN201810963651 A CN 201810963651A CN 109147321 A CN109147321 A CN 109147321A
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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
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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
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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
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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
Abstract
The invention belongs to model construction techniques fields, disclose a kind of ITS new model under Internet of Things and its construction method and intelligent transportation system, on the basis of the existing logical framework of ITS and physical model, establish the ITS structural model under environment of internet of things, it is formed and improves comprehensive intelligent transportation architectural framework, and frame is evaluated as standard using intelligent transportation system framework under new environment, new system framework is verified and analyzed using analytic hierarchy process (AHP) and Multiple Attribute Decision-making Method；Obtain the intelligent transportation system framework under the environment of internet of things better than existing ITS.Design of node is carried out as test object using traffic informations such as the speed of vehicle, identification vehicle, statistical vehicle flowrate and road surface occupancies, sensor selection and integration are carried out to node, separately design child node and host node.The traffic information in section can be not only collected, but also can inform how driver changes its course, detours, and has reached two-way circulating for information, improves traffic administration efficiency and quality by module.
Description
Technical field
The invention belongs under model construction techniques field more particularly to a kind of Internet of Things ITS new model and its building side
Method and intelligent transportation system.
Background technique
Currently, the prior art commonly used in the trade is such that
Currently, most important problem is then traffic jam for urban transportation.The original of traffic jam is generated at present
Cause mainly has the increase of automobile utilization rate, road capacity are insufficient, road confluce is excessive etc..In order to solve this problem, government adopts
Many measures have been taken, such as widening road, the traffic engineering measure for establishing urban three-dimensional transportation network network and control license plate granting,
The intensive traffic section current limliting, policies and measures of control etc..It no doubt can solve problem in this way, it can nevertheless be seen that causing traffic jam
Be frequently not that global wagon flow is excessive, but the wagon flow of part it is excessive produced by blocking.So, it is necessary to this part wagon flow into
Row guidance dredging, if guiding if before the accident happened, or carries out the shunting to subsequent vehicle when congestion just generates, often
Congestion can be controlled in the range of can bear, and to realize this effect shunted in advance, a very crucial step
It is to develop intelligent transportation system (ITS).One big typical case of Internet of Things (IOT) is exactly intelligent transportation.Intelligent transportation refer to by
Advanced information technology, data communication transmission technology, electron controls technology, computer processing technology etc. are applied to communications and transportation row
A kind of information-based, intelligent, socialization new transport system of the industry to be formed, it enables traffic infrastructure to play maximum
Efficiency.Intelligence degree is not high, is unable to and is dealt into country on system intelligent degree, level of integrated system and operation strategies
It compares, there are also bigger rooms for promotion.Not each enough the department of resource consolidation, which all grasps, certain transportation information resource, and information is handed over
The main channel changed is network or Email etc..There is the problems such as effective difference in these methods, so that Traffic Information Sharing
It is relatively difficult.It is biased to the solution of application, front end communication technology and acquisition technique are insufficient, at present all intelligent transportation systems in China
All deflection system application managements, but the basic communication technology and information collection mode in front end still more lacks, this be because
Information collection is caused only to be partial in a certain respect, cause information content insufficient or inaccuracy for the lag of technological means.Secondly it is exactly
Similar foundation, such as road vehicle communication etc. should be tended to by developing emphasis, only the similar sensing of front end this
Kind foundation is set up, and just can guarantee that whole system operates well.
In conclusion problem of the existing technology is:
Intelligence degree is not high, and front end communication technology and acquisition technique are insufficient, and information content is insufficient or inaccuracy.
Summary of the invention
In view of the problems of the existing technology, the present invention provides under a kind of Internet of Things ITS new model and its building side
Method and intelligent transportation system.
The invention is realized in this way the ITS new model under a kind of networking, the ITS new model under the Internet of Things includes:
Wireless sensor child node module, wireless sensor main controlled node module, traffic administration console module, reception and display module；
Wireless sensor child node module, including wireless sensor child node 1 arrive wireless sensor child node N, to traffic
Real time information sampling, analysis and statistics；
Wireless sensor main controlled node module: the wireless forwarding of data is realized；
Traffic administration console module includes the setting of traffic normality threshold, congestion threshold value is arranged, accident threshold value is arranged, right
Traffic real time status proposes solution；
Reception and display module, including cell phone application and display system receive and show real-time sampling of traffic information, analysis
With the result of statistics.
Another object of the present invention is to provide a kind of construction method of the ITS new model under Internet of Things, the structures
Construction method includes:
Step 1: by wireless sensor child node 1 to wireless sensor child node N, to real-time sampling of traffic information, analysis
With statistics；
Step 2: the wireless forwarding of data is realized by wireless sensor main controlled node module；
Step 3: it is set by the setting of traffic normality threshold, the setting of congestion threshold value, accident threshold value of traffic administration console module
It sets, solution is proposed to traffic real time status；
Step 4: cell phone application and display system receive and show the result of real-time sampling of traffic information, analysis and statistics.
Another object of the present invention is to provide a kind of intelligent transportation systems using the ITS new model under the Internet of Things
System is divided into the following steps to the data processing of information of vehicles using " information processing technology based on image ":
Step 1: image acquisition is carried out to road vehicles information using high-definition camera；
Step 2: extraction and identification to vehicle；
Step 3: tracking and mark to vehicle
Step 4: vehicle image coordinate is transformed to real road coordinate by coordinate transform；
Step 5: effective automobile speedestimate and trajectory calculation, using two location between frames method of changing.
Further, the extraction of vehicle uses frame difference method in step 2；The identification of vehicle uses Blob analytic approach；
Further, feature extraction, locking, tracking are carried out to the vehicle after identification in step 3；By the vehicle of locking tracking
Simplify mark into a symbol "×"；
Further, vehicle image coordinate is transformed to real road coordinate in step 4.Intended using least square method
Optimization is closed, if image coordinate is (x, y), real road coordinate is (X, Y), transformational relation are as follows:
(α can be obtained after wherein carrying out least square fitting0,β0,γ0) and (α1,β1,γ1)。
Further, effective automobile speedestimate uses two location between frames method of changing in step 5.If the time difference of two interframe is, preceding
The real road coordinate of one frame isThe real road coordinate of a later frame isThen effective speed
Are as follows:The vehicle mark "×" of each frame is projected to plan view by track of vehicle information
On can be obtained by vehicle running track.
Further, the node of the wireless sense network of the intelligent transportation system, the node of the wireless sense network include: son
Node and host node；
After the collected information of child node sensor passes through statistics and analysis, it is divided to the two-way processing of two approach；It is wireless to pass
Site traffic information is transmitted to host node by wireless network by sensor node, and host node passes through Ethernet and traffic administration platform
Docking, scheduling and control for controllers to our traffic conditions；Controllers provide traffic by analysis and judgement
These control information are passed to host node by control platform by solution, controllers, and host node passes through wireless network again
It is transmitted to the child node of corresponding position, last child node is accused information by the display screen being integrated on wireless monitor sensing module
Know crowded vehicle on this section.
The present invention establishes the ITS knot under environment of internet of things on the basis of the existing logical framework of ITS and physical model
Structure model forms and improves comprehensive intelligent transportation architectural framework, and is with intelligent transportation system framework evaluation frame under new environment
Standard is verified and is analyzed to new system framework using analytic hierarchy process (AHP) and Multiple Attribute Decision-making Method；It obtains better than existing ITS's
Intelligent transportation system framework under environment of internet of things.With the speed of vehicle, identification vehicle, statistical vehicle flowrate and road surface occupancy etc.
Traffic information carries out design of node as test object, carries out sensor selection and integration to node, separately design child node and
Host node.After the collected information of child node sensor passes through statistics and analysis, then it is divided to the two-way processing of two approach a: side
Site traffic information is transmitted to host node by wireless network by face, wireless sensor node, and host node passes through Ethernet and friendship
The docking of siphunculus platform, scheduling and control for controllers to traffic conditions.On the other hand, controllers by analysis and
Judgement provides the solution of traffic at this time, for example informs that, how the driver of congested link detours, controllers are these
It controlling information and host node is passed to by control platform, host node passes through the child node that wireless network is transmitted to corresponding position again,
Last child node informs these information by the display screen being integrated on wireless monitor sensing module crowded on this section
Vehicle.The traffic information in section can be not only collected with the above method, if but also can inform driver by module
Change its course, detour, reached two-way circulating for information, improves traffic administration efficiency and quality.
The exploitation of road condition analyzing special-purpose software packet sets road conditions threshold value in the case of normal traffic, congestion, accident, according to collection
Traffic information analyzed, arranged, and be compared with threshold value, control and scheduling information passed through wireless sense network biography later
It is shown to respective nodes by display system, to inform that driving person is rationally avoided, detours, reaches information mutual communication, adjusts in real time
The purpose of section substantially increases the efficiency of traffic control.
It is traffic congestion that intelligent transportation, which needs the key problem solved, therefore the acquisition of information of vehicles seems on road
It is particularly important.It establishes on the basis of a kind of novel intelligent traffic integrated system model based on platform of internet of things, by wirelessly passing
Feel network (WSN) and accurately statistics and analysis carried out to all kinds of Real-time Traffic Informations, including monitor simultaneously vehicle fleet size, speed,
The parameters such as classification vehicle flowrate, road average-speed, accurate measurements section congestion, thus when effectively reducing the congestion of traffic
Between, while the convenience and efficiency of people's trip are also improved, alleviate urban road to a certain extent, especially city is often gathered around
The traffic problems on stifled road surface, substantially reduce the consumption of the transportation system energy and the pollution to environment.
When the master and slave node of multisensor of the present invention, the acquisition chip of low-power consumption, multichannel is selected as far as possible, so not only
It can reduce node power consumption, node volume can also be reduced, be more suitable for being mounted on the section of congestion or vehicle-mounted without influencing traffic；
Sensing net node design fully considers scalability and compatibility, according to different crops, is convenient for changing, upgrades measurement sensor,
In schematic diagram and PCB design, the device that selection can be compatible with pin to pin as far as possible upgrades and is expanded convenient for the later period；Sufficiently
Consider the use environment of sensing network node, such as the anti-interference etc. that WSN signal transmits under many and diverse environment, carries out various reliable
Property test, such as lightning Protection Design, Anti-corrosion design etc..
Detailed description of the invention
Fig. 1 is the block diagram of the ITS new model under Internet of Things provided in an embodiment of the present invention.
Fig. 2 is the construction method schematic diagram of the ITS new model under Internet of Things provided in an embodiment of the present invention.
Fig. 3 is the construction method flow chart of the ITS new model under Internet of Things provided in an embodiment of the present invention.
Specific embodiment
In order to further understand the content, features and effects of the present invention, the following examples are hereby given, and cooperate attached drawing
Detailed description are as follows.
Structure of the invention is explained in detail with reference to the accompanying drawing.
As shown in Figure 1, the ITS new model under Internet of Things provided in an embodiment of the present invention includes: wireless sensor child node
Module, wireless sensor main controlled node module, traffic administration console module, reception and display module；
Wireless sensor child node module, including wireless sensor child node 1 arrive wireless sensor child node N, to traffic
Real time information sampling, analysis and statistics；
Wireless sensor main controlled node module: the wireless forwarding of data is realized；
Traffic administration console module includes the setting of traffic normality threshold, congestion threshold value is arranged, accident threshold value is arranged, right
Traffic real time status proposes solution；
Reception and display module, including cell phone application and display system receive and show real-time sampling of traffic information, analysis
With the result of statistics.
Fig. 2 is the construction method schematic diagram of the ITS new model under Internet of Things provided in an embodiment of the present invention；
Fig. 3 is Internet of Things shown in the construction method flow chart of the ITS new model under Internet of Things provided in an embodiment of the present invention
Under the construction method of ITS new model include:
S101: by wireless sensor child node 1 to wireless sensor child node N, to real-time sampling of traffic information, analysis with
Statistics；
S102: the wireless forwarding of data is realized by wireless sensor main controlled node module；
S103: it is set by the setting of traffic normality threshold, the setting of congestion threshold value, accident threshold value of traffic administration console module
It sets, solution is proposed to traffic real time status；
S104: cell phone application and display system receive and show the result of real-time sampling of traffic information, analysis and statistics.
A kind of intelligent transportation system using the ITS new model under the Internet of Things provided in an embodiment of the present invention, to vehicle
The data processing of information is divided into the following steps using " information processing technology based on image ":
Image acquisition is carried out to road vehicles information using high-definition camera；
Extraction and identification to vehicle；
Tracking and mark to vehicle；
Vehicle image coordinate is transformed to real road coordinate by coordinate transform；
Effective automobile speedestimate and trajectory calculation, using two location between frames method of changing.
The extraction of extraction and identification to vehicle, vehicle uses frame difference method；The identification of vehicle uses Blob analytic approach；
Feature extraction, locking, tracking are carried out to the vehicle after identification；The vehicle of locking tracking is simplified mark to accord at one
Number "×"；
Vehicle image coordinate is transformed to real road coordinate.Optimization is fitted using least square method, if image is sat
It is designated as (x, y), real road coordinate is (X, Y), transformational relation are as follows:
(α can be obtained after wherein carrying out least square fitting0,β0,γ0) and (α1,β1,γ1)。
Effective automobile speedestimate uses two location between frames method of changing.If the time difference of two interframe is, the real road of former frame
Coordinate isThe real road coordinate of a later frame isThen effective speed are as follows:
The vehicle mark "×" of each frame is projected to plane by track of vehicle information
It can be obtained by vehicle running track on figure.
The node of the node of the wireless sense network of intelligent transportation system provided by the invention, the wireless sense network includes:
Child node and host node；
After the collected information of child node sensor passes through statistics and analysis, it is divided to the two-way processing of two approach；It is wireless to pass
Site traffic information is transmitted to host node by wireless network by sensor node, and host node passes through Ethernet and traffic administration platform
Docking, scheduling and control for controllers to our traffic conditions；Controllers provide traffic by analysis and judgement
These control information are passed to host node by control platform by solution, controllers, and host node passes through wireless network again
It is transmitted to the child node of corresponding position, last child node is accused information by the display screen being integrated on wireless monitor sensing module
Know crowded vehicle on this section.
ITS model construction under present invention environment of internet of things first analyzes monitoring object parameter in ITS, with monitoring function
Centered on carry out wireless sense network design of node, finally according to previous work propose software realization thinking, study road condition analyzing
The exploitation of software.On the basis of the existing logical framework of ITS and physical model, the ITS structure mould under environment of internet of things is established
Type, and then the intelligent transportation architectural framework for improving synthesis is formd, and frame is evaluated with intelligent transportation system framework under new environment
For standard, new system framework is verified and analyzed using analytic hierarchy process (AHP) and Multiple Attribute Decision-making Method；It finally obtains better than existing
There is the intelligent transportation system framework under the environment of internet of things of ITS.With the speed of vehicle, identification vehicle, statistical vehicle flowrate and road surface
The traffic informations such as occupancy carry out design of node as test object, carry out sensor selection and integration to node, separately design
Child node and host node.After the collected information of child node sensor passes through statistics and analysis, then it is divided to the two-way of two approach
Processing: on the one hand, site traffic information is transmitted to host node by wireless network by wireless sensor node, host node by with
Too net and the docking of traffic administration platform, scheduling and control for controllers to traffic conditions.On the other hand, controllers are logical
Analysis and judgement are crossed, the solution of traffic at this time is provided, for example is informed how the driver of congested link detours, people is controlled
These control information are passed to host node by control platform by member, and host node passes through wireless network again and is transmitted to corresponding position
Child node, last child node inform these information on this section by the display screen being integrated on wireless monitor sensing module
Crowded vehicle.The traffic information in section can be not only collected with the above method, but also can be informed and be driven by module
If member changes its course, detours, two-way circulating for information is reached, has improved traffic administration efficiency and quality.Setting traffic is normal, gathers around
Road conditions threshold value in the case of stifled, accident, is analyzed according to the traffic information of collection, is arranged, and be compared with threshold value, later handle
Control and scheduling information pass to respective nodes by wireless sense network and are shown by display system, to inform that it is reasonable that driving person carries out
Evacuation detours, and achievees the purpose that information mutual communication, adjusts in real time, substantially increases the efficiency of traffic control.
The present invention integrates two kind networking modes of the WSN in intelligent transportation, and is acquired and gathered around simultaneously using a variety of sensing devices
Stifled or problem section traffic information, completes the intelligent acquisition and analysis system of traffic information, improves the real-time of system and accurate
Property, to finely, accurately perceive traffic dynamic, can accomplish nobody at the scene can be completed grasp traffic conditions, completes to hand over
The purpose of logical scheduling, meets the requirement of intelligent transportation.Multisource data fusion processing technique, melts by network transmission and mass data
It closes, forms the amalgamation database based on traffic solid, including classification hourage, vehicle flowrate, classification vehicle flowrate, road-section average speed
Degree etc. is more abundant, complete, accurate, timely accurate dynamic information.Dedicated information analysis software packet is used simultaneously, it is complete
The purpose to exchange information at control platform and each node, the control instruction that control platform is analyzed can be by node
LCD carries out real-time display, achievees the purpose that information mutual communication, adjusts in real time, greatly improves the efficiency of traffic control.In intelligent transportation
Under the support of accurate Sensor Network, carry out the assisting navigation based on dynamic information, the traffic lights towards global optimization are matched
When basis and the application such as strategy, traffic forecast based on the accurate Sensor Network of traffic.
The above is only the preferred embodiments of the present invention, and is not intended to limit the present invention in any form,
Any simple modification made to the above embodiment according to the technical essence of the invention, equivalent variations and modification, belong to
In the range of technical solution of the present invention.
Claims (8)
1. the ITS new model under a kind of Internet of Things, which is characterized in that the ITS new model under the Internet of Things are as follows: wireless sensor
Child node module, wireless sensor main controlled node module, traffic administration console module, reception and display module；
Wireless sensor child node module, including wireless sensor child node 1 arrive wireless sensor child node N, to traffic information
Acquisition in real time, analysis and statistics；
Wireless sensor main controlled node module: the wireless forwarding of data is realized；
Traffic administration console module includes the setting of traffic normality threshold, the setting of congestion threshold value, the setting of accident threshold value, to traffic
Real time status proposes solution；
Reception and display module, including cell phone application and display system receive and show real-time sampling of traffic information, analysis and system
The result of meter.
2. a kind of construction method of the ITS new model under Internet of Things as described in claim 1, which is characterized in that the Internet of Things
The construction method of ITS new model off the net includes:
Step 1: by wireless sensor child node 1 to wireless sensor child node N, to real-time sampling of traffic information, analysis and system
Meter；
Step 2: the wireless forwarding of data is realized by wireless sensor main controlled node module；
Step 3: being arranged by the setting of traffic normality threshold, the setting of congestion threshold value, accident threshold value of traffic administration console module,
Solution is proposed to traffic real time status；
Step 4: cell phone application and display system receive and show the result of real-time sampling of traffic information, analysis and statistics.
3. a kind of intelligent transportation data processing method using the ITS new model under Internet of Things described in claim 1, feature exist
In the intelligent transportation data processing method includes:
Step 1: image acquisition is carried out to road vehicles information using high-definition camera；
Step 2: extraction and identification to vehicle；
Step 3: tracking and mark to vehicle；
Step 4: vehicle image coordinate is transformed to real road coordinate by coordinate transform；
Step 5: effective automobile speedestimate and trajectory calculation, using two location between frames method of changing.
4. intelligent transportation data processing method as claimed in claim 3, which is characterized in that the extraction of the vehicle is poor using frame
Different method；The identification of vehicle uses Blob analytic approach.
5. intelligent transportation data processing method as claimed in claim 3, which is characterized in that the vehicle after described pair of identification carries out
Feature extraction, locking, tracking；The vehicle of locking tracking is simplified into mark into a symbol "×".
6. intelligent transportation data processing method as claimed in claim 3, which is characterized in that described by vehicle image coordinate transform
For real road coordinate, optimization is fitted using least square method, if image coordinate be (x, y), real road coordinate be (X,
Y), transformational relation are as follows:
(α can be obtained after wherein carrying out least square fitting0,β0,γ0) and (α1,β1,γ1)。
7. intelligent transportation data processing method as claimed in claim 3, which is characterized in that effective automobile speedestimate uses
Two location between frames method of changing, if the time difference of two interframe is that the real road coordinate of former frame isA later frame
Real road coordinate isThen effective speed are as follows:Vehicle
Trace information, the vehicle mark "×" of each frame, which is projected on plan view, can be obtained by vehicle running track.
8. a kind of intelligent transportation system for implementing intelligent transportation data processing method described in claim 3, which is characterized in that described
The node of the wireless sense network of intelligent transportation system includes: child node and host node；
After the collected information of child node sensor passes through statistics and analysis, it is divided to the two-way processing of two approach；Wireless sensor
Site traffic information is transmitted to host node by wireless network by node, and host node passes through Ethernet and traffic administration platform pair
It connects, the scheduling and control for controllers to our traffic conditions；Controllers provide the solution of traffic by analysis and judgement
These control information are passed to host node by control platform by certainly scheme, controllers, and host node is passed by wireless network again
It is delivered to the child node of corresponding position, last child node is informed information by the display screen being integrated on wireless monitor sensing module
The crowded vehicle on this section.
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| CN110211383A (en) * | 2019-06-12 | 2019-09-06 | 国鸿科技股份有限公司 | Intelligent transportation data processing system |
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