CN107517065A - A kind of people's bus or train route information interaction system and method based on intelligent transportation - Google Patents
A kind of people's bus or train route information interaction system and method based on intelligent transportation Download PDFInfo
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- CN107517065A CN107517065A CN201710753806.1A CN201710753806A CN107517065A CN 107517065 A CN107517065 A CN 107517065A CN 201710753806 A CN201710753806 A CN 201710753806A CN 107517065 A CN107517065 A CN 107517065A
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- 230000003993 interaction Effects 0.000 title claims abstract description 19
- 238000004891 communication Methods 0.000 claims abstract description 36
- 230000005540 biological transmission Effects 0.000 claims abstract description 32
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- 238000005516 engineering process Methods 0.000 description 7
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- 238000001514 detection method Methods 0.000 description 4
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- 230000009183 running Effects 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 238000003032 molecular docking Methods 0.000 description 2
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
- H04B1/3822—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving specially adapted for use in vehicles
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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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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B5/00—Near-field transmission systems, e.g. inductive or capacitive transmission systems
- H04B5/70—Near-field transmission systems, e.g. inductive or capacitive transmission systems specially adapted for specific purposes
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Abstract
The invention discloses a kind of people's bus or train route information interaction system based on intelligent transportation, including：Apparatus for measuring road, it is installed on trackside, and it is connected with outside cloud server；Car-mounted device, it is arranged at in-car, and it enters the reception and transmission of row information between the apparatus for measuring road by ZigBee protocol, and it is connected with vehicle-mounted vehicle body diagnostic system；Mobile phone servicing unit, it passes through ZigBee protocol and the car-mounted device wireless connection；Mobile phone communication terminal, it carries out wireless connection by bluetooth and mobile phone servicing unit and car-mounted device.It information interaction system of the present invention, using purple honeybee Bluetooth communication protocol, can over long distances transmit, and not limited by cellular mobile network signal is whether there is.The present invention a kind of people's bus or train route information interacting method based on intelligent transportation is also provided, by determine apparatus for measuring road to car-mounted device send information frequency lambda and car-mounted device to apparatus for measuring road send information frequency k so that information exchange is real-time, efficiently.
Description
Technical field
The present invention relates to intelligent transportation Che-road communications infrastructure technical field, more particularly, the present invention relates to one kind
People-Che based on intelligent transportation-road information interaction system and method.
Background technology
Existing bus or train route communicator is based primarily upon radio RF recognition technology (RFID), and it for trackside information by (leading
To be traffic sign or signal lamp) it is equipped with an ID and its ID RPID transmitters can be broadcasted, by the RFID on vehicle
Reader reminds the corresponding trackside information of driver to realize the process of trackside information transfer to vehicle.Such a mode is present
Some defects, such as：Because the limited transmission distance of passive RFID wireless communication protocol is too serious, 20 meters are usually no more than, is driven
The person of sailing is difficult to receive transport information in so short distance and make respective reaction.In another example：The life-span of active RFID device
Restricted by battery capacity and life-span, and cost is higher, dramatically limits its application.Using RFID communication scheme, gesture
Necessary to place RFID reader in vehicle interior, this will take interior space, cause to use upper inconvenience.
In addition, in terms of internet automobile and mobile phone-vehicle remote interactive communication, moved now by LTE honeycombs
The technology of real-time performance vehicle-mounted information service, at present for example upper vapour Roewe RX5 of some intelligent automobiles can by car networking mode,
Realize and realized when vehicle and mobile phone are all connected to LTE cellular mobile networks by mobile phone operating automobile and vehicle performance and check car
The purpose of essential information, it is such as underground parking without LTE cellular mobile networks to believe some the defects of such a mode
Number scene under, this kind of mode easily fails.
The content of the invention
The purpose of the present invention has designed and developed a kind of people-Che based on intelligent transportation-road information interaction system, using purple
It honeybee-Bluetooth communication protocol, can over long distances transmit, and not limited by cellular mobile network signal is whether there is.
Another object of the present invention is to have designed and developed a kind of people-Che based on intelligent transportation-road information interacting method,
By determining that frequency from apparatus for measuring road to car-mounted device transmission information and car-mounted device to the frequency of apparatus for measuring road transmission information, makes
Obtain information exchange real-time high-efficiency.
Technical scheme provided by the invention is：
A kind of people-the Che based on intelligent transportation-road information interaction system, including：
Apparatus for measuring road, it is installed on trackside, and it is connected with outside cloud server；
Car-mounted device, it is arranged at in-car, and it enters the reception of row information between the apparatus for measuring road by ZigBee protocol
And transmission, it is connected with vehicle-mounted vehicle body diagnostic system；
Mobile phone servicing unit, it passes through ZigBee protocol and the car-mounted device wireless connection；
Mobile phone communication terminal, it carries out wireless connection by bluetooth and mobile phone servicing unit and car-mounted device.
Preferably, the apparatus for measuring road includes：
Trackside Arduino plates, it is connected with the outside cloud server；
First pinboard, it is plugged on the trackside Arduino plates；
Trackside XBee modules, it is connected with first pinboard, is deposited for receive information and is stored in the trackside
In Arduino plates.
Preferably, the car-mounted device includes：
Vehicle-mounted Arduino plates, it is connected with the vehicle-mounted vehicle body diagnostic system；
Second pinboard, it is plugged on the vehicle-mounted Arduino plates；
Vehicle-mounted XBee modules, it is plugged on second pinboard, is deposited and is stored in described vehicle-mounted for receive information
In Arduino plates, it enters the reception and transmission of row information between the trackside XBee modules by ZigBee protocol；
First bluetooth module, it is plugged on second pinboard, for reading information and carrying out Bluetooth communication.
Preferably, the mobile phone servicing unit includes：
3rd Arduino plates；
3rd pinboard, it is plugged on the 3rd Arduino plates；
3rd XBee modules and the second bluetooth module, it is plugged on the 3rd pinboard simultaneously, for receive information
Deposit and be stored in the 3rd Arduino plates, assisted between the 3rd XBee modules and the vehicle-mounted XBee modules by purple honeybee
Discuss the reception and transmission into row information.
Preferably, second pinboard is plugged on the vehicle-mounted Arduino plates by contact pin；The vehicle-mounted XBee
Module and bluetooth module are plugged on second pinboard by contact pin.
Preferably, in addition to solar electric power supply system, it is connected with the apparatus for measuring road, for for the apparatus for measuring road
Power supply.
Correspondingly, the present invention also provides a kind of people-Che based on intelligent transportation-road information interacting method, including following step
Suddenly：
Step 1：The coding for representing trackside information is stored with the trackside Arduino plates, the coding is by trackside XBee
Module is read by the first pinboard, is sent to vehicle-mounted XBee modules, and arrive vehicle-mounted Arduino plates via the storage of the second pinboard
In, read by bluetooth module, be sent to Mobile phone communication terminal；
Step 2：The information of vehicles read is stored in vehicle-mounted Arduino plates by vehicle-mounted vehicle body diagnostic system, and is established
Two-way is communicated to connect, and information is transferred into mobile phone servicing unit to be transferred to Mobile phone communication terminal by ZigBee protocol all the way；
Another way reads information of vehicles by vehicle-mounted XBee modules from vehicle-mounted Arduino plates, and is inversely sent to road by ZigBee protocol
Side XBee modules, the information of vehicles of reception is stored in trackside Arduino plates by it, and is uploaded to outside by trackside Arduino plates
Portion's cloud server.
Preferably, apparatus for measuring road sends the determination of the frequency lambda of information to car-mounted device including walking as follows in the step 1
Suddenly：
Input car-mounted device receives the simultaneously frequency μ of processing information and is guarantee system normal operation, and all cars can
The constraint Upper Probability value p that receives the information that apparatus for measuring road is sent and system free time probability must be carried outx；
The number of vehicles n inputted in apparatus for measuring road information range of transmission；
F=λ/μ, λ is made to be incremented by since 0, until meeting
λ value now is recorded,
Wherein, F is that system reaches load, and i is number of increments, p0Reach system free time probability when load is F；
Now, λ is the frequency that apparatus for measuring road sends information to car-mounted device.
Preferably, car-mounted device sends the frequency k of information determination to apparatus for measuring road including walking as follows in the step 2
Suddenly：
Obtaining can realize that car-mounted device sends link length L, the number of track-lines x of the data of information of vehicles to apparatus for measuring road,
Apparatus for measuring road analyzes and processes and uploaded the speed v for the data that car-mounted device is sentd, the average waiting time of data in systems
t1, the Maximum Constraint t for the stand-by period that data are sent2, modifying factor j；
Obtain real-time speed v and apparatus for measuring road can receive car-mounted device send information in the range of vehicle fleet n；
Calculate and judgeWhether set up, if so, then carry out in next step；If not, illustrate current vehicle speed
It is too fast, exceed road load, then prompted driver's reduction of speed, until this formula is set up；
Calculate
Judge nk≤vdWhether set up, if so, then carry out in next step；If not, illustrate that the service of this queuing system is strong
Degree is unstable more than 1, now takes k=vd/n；
K is the frequency that car-mounted device sends information to apparatus for measuring road.
Preferably, obtained again when the number of vehicles in the step 1 in trackside device information range of transmission changes
Take frequency lambda；Real-time speed and apparatus for measuring road can receive the vehicle fleet in the range of car-mounted device transmission information in the step 2
Frequency k is reacquired when changing.
The present invention at least possesses following beneficial effect：
(1) people-Che of intelligent transportation of the present invention-road information interaction system, using purple honeybee-Bluetooth communication protocol,
It can transmit over long distances, it is farthest up to 1600 meters.
(2) the system is powered using solar electric power supply system for apparatus for measuring road, and internal XBee modules power itself
There is milliwatt rank, the defects of effectively eliminating radio RF recognition technology device lifetime and restricted by battery.
(3) information receiving terminal is modern society's generally high smart mobile phone communication terminal of rate, has adapted to driver couple
The requirement of mobile unit terseness, overcome radio RF recognition technology equipment in-convenience in use the defects of.
(4) vehicle-related information that " onboard diagnostic system " is read can also be sent to road by the system by car-mounted device
Side device, so as to upload high in the clouds, docking server carries out the data summarization of vehicle and analysis, this measure on road and greatly facilitates friendship
Supervision of the logical department to real-time road.
(5) the system realizes remote automobile feedback of the information and manipulation function by ZigBee and bluetooth communication mode, not by
The limitation of cellular mobile network signal is whether there is, realizes that driver can be appreciated that the real-time feelings of vehicle by smart mobile phone under off-line state
Condition, smart mobile phone remote-control car can be passed through in the case of away from automobile.
(6) people-Che of intelligent transportation of the present invention-road information interacting method, by determining apparatus for measuring road to vehicle-mounted
Device sends the frequency lambda of information and car-mounted device sends the frequency k of information to apparatus for measuring road so that information exchange is real-time, efficiently.
Brief description of the drawings
Fig. 1 is the modular structure schematic diagram of people-Che-road information interaction system of intelligent transportation of the present invention.
Fig. 2 is the principle logic diagram of people-Che-road information interacting method of intelligent transportation of the present invention.
Fig. 3 is the principle logic diagram that Mobile phone communication terminal of the present invention carries out comprehensive analysis process to information.
Fig. 4 is the particular flow sheet of the present invention that people-Che-road information exchange is realized based on purple honeybee-Bluetooth communication protocol.
Fig. 5 is scene graph described in the embodiment of the present invention 2.
Fig. 6 is the described information interaction diagrams of the embodiment of the present invention 2.
Fig. 7 is scene graph described in the embodiment of the present invention 3.
Fig. 8 is the described information interaction diagrams of the embodiment of the present invention 3.
Fig. 9 is the flow chart for the frequency lambda that determination apparatus for measuring road of the present invention sends information to car-mounted device.
Figure 10 is the graph of a relation that information repeats transmission times k and speed v in the unit interval of the present invention.
Figure 11 is the flow chart for the frequency k that determination car-mounted device of the present invention sends information to apparatus for measuring road.
Embodiment
The present invention is described in further detail below in conjunction with the accompanying drawings, to make those skilled in the art with reference to specification text
Word can be implemented according to this.
The present invention can have many different forms to implement, and should not be construed as limited to the embodiment illustrated again, phase
Instead, there is provided these embodiments so that the disclosure will be thorough and complete.
As shown in figure 1, the present invention provides a kind of people-Che based on intelligent transportation-road information interaction system, including：Trackside
Device 110, it is installed on trackside, and it is connected with outside cloud server；Car-mounted device 120, it is arranged at in-car, its with it is described
Enter the reception and transmission of row information between apparatus for measuring road 110 by ZigBee protocol, itself and vehicle-mounted vehicle body diagnostic system (OBD devices)
Connection；Mobile phone servicing unit 130, it passes through ZigBee protocol and the wireless connection of car-mounted device 120；Mobile phone communication terminal 140,
It carries out wireless connection by bluetooth and mobile phone servicing unit 130 and car-mounted device 120；The ZigBee protocol is based on IEEE
802.15.4 the ZigBee wireless communication protocols of standard.
In the present embodiment, the apparatus for measuring road 110 includes：Trackside Arduino plates 111, itself and the outside cloud service
Device 150 communicates to connect；First pinboard 112, it is plugged on the trackside Arduino plates 111；Trackside XBee modules 113, its
It is connected with first pinboard 112, deposits and be stored in the trackside Arduino plates 111 for receive information.The vehicle-mounted dress
Putting 120 includes：Vehicle-mounted Arduino plates 121, itself and the vehicle-mounted wired connection of vehicle body diagnostic system 160, and by with in-car
Portable power source connects, and realizes the power supply to vehicle-mounted Arduino121 plates；Second pinboard 122, it is plugged in described by contact pin
On vehicle-mounted Arduino plates 121；Vehicle-mounted XBee modules 123, it is plugged on second pinboard 122 by contact pin, for connecing
Collection of letters breath is deposited and is stored in the vehicle-mounted Arduino plates 121, and it passes through ZigBee protocol between the trackside XBee modules 113
Enter the reception and transmission of row information；First bluetooth module 124, it is plugged on second pinboard 122 by contact pin, is used for
Read information and carry out Bluetooth communication.The mobile phone servicing unit 130 includes：3rd Arduino plates 131；3rd pinboard
132, it is plugged on the 3rd Arduino plates 131 by contact pin；3rd XBee modules 133 and the second bluetooth module 134,
It is plugged on the 3rd pinboard 132 simultaneously by contact pin, is deposited for receive information and is stored in the 3rd Arduino plates
In 131, enter the reception of row information between the 3rd XBee modules 133 and the vehicle-mounted XBee modules 123 by ZigBee protocol
And transmission.
In the present embodiment, in addition to solar electric power supply system 170, it is connected with the apparatus for measuring road 110, for be described
Apparatus for measuring road 110 is powered；The solar electric power supply system 170 is connected with trackside Arduino plates 111, solar electric power supply system warp
Mu balanced circuit stably exports 5.0V voltages and powered for apparatus for measuring road 110, and XBee modular powers overcome existing nothing in milliwatt rank
Communication module power consumption serious problems in line communication plan.
People-Che based on intelligent transportation-road information interaction system of the present invention, using purple honeybee-Bluetooth communication protocol,
It can transmit over long distances, it is farthest up to 1600 meters；Powered using solar electric power supply system for apparatus for measuring road, and internal XBee moulds
Block power itself only has milliwatt rank, the defects of effectively eliminating radio RF recognition technology device lifetime and restricted by battery；Letter
It is modern society's generally high smart mobile phone communication terminal of rate to cease receiving terminal, has adapted to driver to mobile unit terseness
Requirement, overcome radio RF recognition technology equipment in-convenience in use the defects of；The system can also be by " OBD system
The vehicle-related information that system " is read is sent to apparatus for measuring road by car-mounted device, and so as to upload high in the clouds, docking server enters trade
The data summarization of vehicle and analysis on road, greatly facilitate supervision of the traffic department to real-time road；The system passes through ZigBee
Remote automobile feedback of the information and manipulation function are realized with bluetooth communication mode, is not limited by cellular mobile network signal is whether there is,
Realize that driver can be appreciated that vehicle real-time condition by smart mobile phone under off-line state, can lead in the case of away from automobile
Cross smart mobile phone remote-control car.
The present invention also provides a kind of people-Che based on intelligent transportation-road information interacting method, comprises the following steps：
Step 1：The coding for representing trackside information is stored with the trackside Arduino plates, the coding is by trackside XBee
Module is read by the first pinboard, is sent to vehicle-mounted XBee modules, and arrive vehicle-mounted Arduino plates via the storage of the second pinboard
In, read by bluetooth module, be sent to Mobile phone communication terminal；
Step 2：The information of vehicles read is stored in vehicle-mounted Arduino plates by vehicle-mounted vehicle body diagnostic system, and is established
Two-way is communicated to connect, and information is transferred into mobile phone servicing unit to be transferred to Mobile phone communication terminal by ZigBee protocol all the way；
Another way reads information of vehicles by vehicle-mounted XBee modules from vehicle-mounted Arduino plates, and is inversely sent to road by ZigBee protocol
Side XBee modules, the information of vehicles of reception is stored in trackside Arduino plates by it, and is uploaded to outside by trackside Arduino plates
Portion's cloud server.
In the present embodiment, the apparatus for measuring road, car-mounted device and mobile phone servicing unit are entered by ArduinoIDE softwares
Row programming Control.
As shown in Figure 2,3, apparatus for measuring road and car-mounted device all have the function of detection information form, i.e. apparatus for measuring road detects
Whether information format is identical with the standard of setting, is to send, otherwise stops；Car-mounted device detection information form whether with setting
Standard it is identical, be to store, otherwise stop.
The information that the trackside XBee modules are sent is encoded by apparatus for measuring road coordinate information, vehicle heading information and road
Board information and check code composition；The apparatus for measuring road coordinate information forms form by longitude and the coordinate of latitude two
XX.XXXXXXNXXX.XXXXXXE, wherein X represent numeral；Vehicle heading information is by direction of traffic and the institute in due east direction
Angulation angle value is formed, and form is two digits, and guideboard information is made up of a capitalization English letter and three bit digital sequence numbers, described
Capitalization English letter represents information type, and G is caution sign, including sharp curve way, to the right sharp curve way, Double bend first to left, continuous to the left
Detour, L are prohibitory sign, including no through traffic, No entry, forbid straight trip, no turns, and Z is Warning Mark, including straight
Go, turn, bend to right to the left, roundabout ahead, L is tourism distinctive emblem, including camp site, is ridden, winter browsing area, and A is
Road construction safety mark, including road construction, road closed, Slow Down, change its course to the right, Y is Ordinary Rd fingerpost, bag
National highway numbering, provincial highway numbering, interchange, right-angled intersection are included, H is that directive signs on motorways carry including Entry to motorway
Show, terminal advance notice, next outlet, service area prompting, two digits represent the message sequence number under the information type, and check code is
TXXT, XX represent the character number in this segment information, as shown in the table.
The Mobile phone communication terminal uses a smart mobile phone, and the smart mobile phone uses Android operation system, embedded with bluetooth,
And there are enough memory spaces to install the mobile phone application of reading Bluetooth information.Smart mobile phone application based on Android operation system
It can receive whether detection Bluetooth of mobile phone and GPS functions on startup open, remind user to open if not opening.Such as Fig. 4 institutes
Show, Mobile phone communication terminal receives the data and to data comprehensive analysis and handled, the smart mobile phone based on Android operation system
Write using AndroidStudio, can receive Bluetooth chip send information after by flag enter row information come
The differentiation in source, it is divided into the information letter related to the trackside that trackside XBee modules in apparatus for measuring road are sent of OBD devices reading
Breath, wherein the latter is divided into the position of apparatus for measuring road, needs to receive the travel direction of the automobile of this information and the tool of information
Hold in vivo.The mobile phone application can receive the information that the Bluetooth chip on vehicle-mounted Arduino plates is sent and decoding, obtain information
The information of vehicles that the coordinate position and OBD devices in source, i.e. apparatus for measuring road are read, and it is included on mobile phone screen, pass through GPS
Detect the travel direction of vehicle and judge the actual travel direction of automobile and need to receive the travel direction of the automobile of this information
It is whether consistent, if unanimously, driver is prompted with the traveling of word, picture and voice；Without prompting if inconsistent.
The course of work of the present invention is exemplified below：
Embodiment 1
There is the traffic sign of " to left sharp turn " to provide front to the vehicle driver of the 45 ° of direction runnings in east by north
Information, the guideboard position coordinates are 100.00 ° of east longitude, 50.00 ° of north latitude；
The Bluetooth of mobile phone of driver receives the data and to data comprehensive analysis and handled in the vehicle of traveling；
In this way, driver's Bluetooth of mobile phone receive information to 45 ° of east by north running automobile and the display " urgency to the left on screen
The word and mark of detour ", and play out voice；Driver's Bluetooth of mobile phone receive information of other direction running automobiles, but not
It can be prompted.And Bluetooth of mobile phone once receives signal source coordinate information, display will be somebody's turn to do in the map in mobile phone application
The position of signal source (i.e. guideboard).Simultaneously vehicle body diagnostic system is shown in the mobile phone application of all driver's smart mobile phones
Including but not limited to speed, oil consumption etc. information, the server beyond the clouds read can also obtain these information by apparatus for measuring road.
Embodiment 2
Whether place judges the travel direction of vehicle and breaks rules and regulations at the parting of the ways.
The crossroad of scene as shown in Figure 5, every road is two way zone, and apparatus for measuring road is placed in road center,
Under judging that the scheme of the vehicle heading is as shown in Figure 6：
(1) when vehicle drives into intersection, the information of vehicles that vehicle-mounted XBee devices read vehicle body diagnostic system (wraps
Include license plate number, speed etc.) apparatus for measuring road A is sent to by ZigBee communication mode, apparatus for measuring road A is read and the phase of registration of vehicle
Information is closed, and at the time of registration of vehicle is by this apparatus for measuring road, at the same time, pass through whistle control system detection now signal lamp
State；
(2) in a cycle of signal lamp, pass through other all directions tracks (such as apparatus for measuring road B) are all
Vehicle all can send information of vehicles, more corresponding license board information to apparatus for measuring road.If believe with the car plate that apparatus for measuring road A is received
Breath is consistent, then at the time of recording the information of vehicles of correlation and record this vehicle by apparatus for measuring road B, while is controlled by signal and be
System detects the state of now signal lamp.If inconsistent, continue to detect within the next signal lamp cycle；
(3) data record that can be provided according to apparatus for measuring road A and apparatus for measuring road B, and information of vehicles is respectively by two tracksides
It is foundation at the time of when device receives, judges the travel direction of this vehicle；
At the same time, apparatus for measuring road receives the car that the vehicle body diagnostic system that XBee modules are sent on car-mounted device is read
The information of vehicles such as speed, vehicle, it is compared with limitation parameter of this section to the vehicle of the different automobile types of contact, so as to vehicle
Act of violating regulations judge.
Embodiment 3
On sky way with regard to it is U-shaped it is curved to contact vehicle prompt.
There is a U-shaped bend in scene as shown in Figure 7, certain sky way somewhere, if driver does not learn that situation is simultaneously herein in advance
Slow down in case turning, then easily occur accident；If two cars travel in opposite directions simultaneously, car accident easily also occurs here.By road
Side device is arranged on U-shaped bend outer edge, to avoid above two accident, under design is as shown in Figure 8：
(1) apparatus for measuring road is positioned over UXing Wan corners, the information of the device elements of a fix He " U-shaped curved herein " is formed
Code, it is sent to environment.This information is received into the vehicle-mounted XBee devices inside the vehicle of this apparatus for measuring road communication range, simultaneously
The coordinate that mobile phone is sent by self poisoning coordinate and apparatus for measuring road calculates distance between vehicle and apparatus for measuring road, more several times should
The size of distance, if this distance is reducing, illustrate that " there is U-shaped bend in front " close to U-shaped bend, is then shown in mobile phone by vehicle
On screen, and distance of the driver away from U-shaped bend is prompted, facilitate it to make turning in advance and prepare；
(2) when vehicle is driven in the transmitting boundary for the XBee modules that apparatus for measuring road enters car-mounted device, vehicle-mounted XBee
Device receives the information of vehicles of automobile body diagnostic system reading, if apparatus for measuring road have received more than two vehicles and send simultaneously
The information that reduces of vehicle and apparatus for measuring road distance, then explanation near U-shaped bend at least two vehicles at the same time close to U-shaped
Bend.Now then think car accident easily occurs, apparatus for measuring road is sent out alarm, reminds vehicle of passing by one's way.
Embodiment 4
In the case where underground parking is without mobile network's offline environment, remote control automobile switchs central controlled lock.
The equipment of existing rcl is car key, is a peripheral hardware of automobile, and the present embodiment replaces this peripheral hardware
For smart mobile phone, the step for carrying car key peripheral hardware can be saved.
Remote control automobile switch central controlled lock step is as follows：
(1) ensure that Bluetooth of mobile phone matches with the bluetooth module on mobile phone servicing unit；
(2) ON/OFF central controlled lock button is clicked in mobile phone application, mobile phone is applied is sent to mobile phone by this order by bluetooth
On the bluetooth module of servicing unit, the order is again by the XBee modules on mobile phone servicing unit to the XBee moulds on car-mounted device
Block is sent；
(3) after the XBee modules on car-mounted device receive the order for the switch central controlled lock that mobile phone servicing unit is sent,
The order is sent to vehicle body CAN；
(4) after vehicle body CAN receives this order, control central controlled lock realizes switching function.
In the present embodiment, if apparatus for measuring road information has n car in the range of sending, i.e., there is n information desk in queuing system；
This n car is by its speed v1,v2,v3,...,vnInformation is sent to apparatus for measuring road；The frequency that apparatus for measuring road sends information is λ,
I.e. queuing system average arrival rate is λ；The frequency is different according to the number of vehicles in this section of track and changes；Vehicle receiver is simultaneously located
The frequency for managing information is μ, i.e., the average output rate of each information desk is μ in service system, each information desk average service time
ForSystem reaches loadP0Representing to reach service system when load is F has system during n information desk idle general
Rate, i.e. apparatus for measuring road are sent without information, the probability for the vehicle for not receiving information but be present,
To ensure system normal operation, all cars can receive the information of apparatus for measuring road transmission, it is necessary to idle to system
Probability enters row constraint.
If car-mounted device receives and frequency μ=0.5 of processing information, row constraint is entered to the idle probability of system, it is right respectively
What it was carried out is constrained to P0≤ 0.1 and P0≤0.05：
(1) P is worked as0When≤0.1, the number of vehicles n in the range of corresponding different apparatus for measuring road information transmission, car-mounted device
Transmission frequency λ is as shown in the table, wherein n units for, λ units for/s：
| n | 0~3 | 4~6 | 7~8 | 9~10 | 11~12 | 13~14 | 15~16 | 17~18 | 19~20 | 21~22 |
| λ | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 |
| n | 23~24 | 25~26 | 27~28 | 29 | 30~31 | 32~33 | 34~35 | 36~37 | 38~39 | 40~41 |
| λ | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 |
(2) P is worked as0When≤0.05, the number of vehicles n in the range of corresponding different apparatus for measuring road information transmission, vehicle-mounted dress
It is as shown in the table to put transmission frequency λ, wherein n units for, λ units for/s：
| n | 0~4 | 5~7 | 8~9 | 10~12 | 13~14 | 15~16 | 17~18 | 19~20 | 21~22 | 23~25 |
| λ | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 |
| n | 26~27 | 28~29 | 30~31 | 32~33 | 34~35 | 36~37 | 38~39 | 40~41 | 42~43 | 44~45 |
| λ | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 |
Therefore, as shown in figure 9, apparatus for measuring road sends the determination of frequency lambda of information to car-mounted device and included in the step 1
Following steps：
Step 1.1：Input car-mounted device receives the simultaneously frequency μ of processing information and is guarantee system normal operation, owns
The constraint Upper Probability value p that car can receive the information of apparatus for measuring road transmission and must be carried out to system free time probabilityx；
Step 1.2：The number of vehicles n inputted in apparatus for measuring road information range of transmission；
Step 1.3：F=λ/μ, λ is made to be incremented by since 0, step-length 0.1, until meetingλ value now is recorded,
Wherein, F is that system reaches load, and i is number of increments, p0Reach system free time probability when load is F；
Step 1.4：λ is exported, as now apparatus for measuring road sends the frequency of information to car-mounted device；
Step 1.5：Judge whether the number of vehicles n in apparatus for measuring road information range of transmission changes, if change, return to step
Rapid 1.2.
In the present embodiment, the frequency that car-mounted device sends information to trackside is k, and car-mounted device can be received by being located at apparatus for measuring road
Vehicle fleet in the range of transmission information is n, and it is v that the information of all vehicles, which produces speed,c, then vc=k × n；
Apparatus for measuring road is v to the processing speed of these informationd, the car-mounted device of each vehicle sends information to apparatus for measuring road
This event meets independently of each other, then queueing theory theory to can be used to be modeled this, concrete model is as follows：
There was only an apparatus for measuring road, i.e. only one-server, if its service intensity is ρ, trackside in system in the system
Device sends the speed v of informationcAs the unit interval customer of queuing system reaches number, i.e. apparatus for measuring road sends information and obeys ginseng
Number is vcPoisson process；The information handling rate v of apparatus for measuring roaddThe Number of Customers of service, v as in the unit intervaldIt need to ensure to make
Apparatus for measuring road has time enough to analyze and process and uploads the data that car-mounted device is sent, and is not influenceing the premise of whole efficiency
Under, vdCan be suitably smaller.Time of apparatus for measuring road processing information obeys quantum condition entropy, and the average time of processing information is
The medium data bulk L to be transmitted of systemqFor：
Service intensity ρ is：
ρ≤1 must is fulfilled for, otherwise queuing system is unstable, i.e. vc≤vd；
There is the Probability p of n bar information transfers under stable state in systemnFor：
pn=(1- ρ) ρn
The par of data is L in systems：
The average waiting time W of data in systemssFor：
The average latency W that data are sent in systemqFor：
To ensure the real-time of data communication and reliability, it is necessary to data average waiting time in systems and data
The stand-by period of transmission enters row constraint, if being constrained to what it was carried out：
0≤Wq≤t1
0≤Ws≤t2
Above formula is solved, obtained：
If number of track-lines is x, it can realize that car-mounted device sends information of vehicles to apparatus for measuring road in the road that length is L
Data, speed v, then vehicle fleet n meet：
Wherein, j is modifying factor, relevant with weather, road congestion conditions etc., and this formula explanation is in a fixed length road and necessarily
Vehicle fleet and speed mutually restrict under the traffic flow of number of track-lines.
Finally calculate k meet condition be：
If L=1000m, x=3, j=0.8, t1=1s, t2=1.5s, vd=2/s, list is drawn using MATLAB softwares
Information repetition transmission times k and speed v relation is as shown in Figure 10 in the time of position.
For different link length L and number of track-lines x, information in the unit interval can be repeated transmission times k and speed v
Relation be fitted to k=av, wherein a value is as shown in the table.
Therefore, as shown in figure 11, car-mounted device sends the frequency k of information determination bag to apparatus for measuring road in the step 2
Include following steps：
Step 2.1：Input can realize that car-mounted device sends the link length L of the data of information of vehicles to apparatus for measuring road,
Number of track-lines x, apparatus for measuring road analyze and process and uploaded the speed v for the data that car-mounted device is sentd, data being averaged in systems
Residence time t1, the Maximum Constraint t for the stand-by period that data are sent2, modifying factor j；
Step 2.2：Input real-time speed v and apparatus for measuring road can receive car-mounted device send information in the range of vehicle it is total
Number n；
Step 2.3：Calculate and judgeWhether set up, if so, then carry out step 2.4；If not, explanation
Current vehicle speed is too fast, has exceeded road load, then prompts driver's reduction of speed, until this formula is set up；
Step 2.4：Calculate
Step 2.5：Calculate and judge nk≤vdWhether set up, if so, then carry out step 2.6；If not, illustrate this
Queuing system service intensity is unstable more than 1, now takes k=vd/n；
Step 2.6：K is exported, as car-mounted device sends the frequency of information to apparatus for measuring road；
Step 2.7：Judge real-time speed v and apparatus for measuring road can receive car-mounted device send information in the range of vehicle it is total
Whether number n changes, if producing change, return to step 2.2.
People-Che based on intelligent transportation-road information interacting method of the present invention, by determining apparatus for measuring road to vehicle-mounted
Device sends the frequency lambda of information and car-mounted device sends the frequency k of information to apparatus for measuring road so that information exchange is real-time, efficiently.
Although embodiment of the present invention is disclosed as above, it is not restricted in specification and embodiment listed
With it can be applied to various suitable the field of the invention completely, can be easily for those skilled in the art
Other modification is realized, therefore under the universal limited without departing substantially from claim and equivalency range, it is of the invention and unlimited
In specific details and shown here as the legend with description.
Claims (10)
- A kind of 1. people-Che based on intelligent transportation-road information interaction system, it is characterised in that including：Apparatus for measuring road, it is installed on trackside, and it is connected with outside cloud server；Car-mounted device, it is arranged at in-car, and it enters reception and the hair of row information between the apparatus for measuring road by ZigBee protocol Send, it is connected with vehicle-mounted vehicle body diagnostic system；Mobile phone servicing unit, it passes through ZigBee protocol and the car-mounted device wireless connection；Mobile phone communication terminal, it carries out wireless connection by bluetooth and mobile phone servicing unit and car-mounted device.
- 2. people-the Che based on intelligent transportation-road information interaction system as claimed in claim 1, it is characterised in that the trackside Device includes：Trackside Arduino plates, it is connected with the outside cloud server；First pinboard, it is plugged on the trackside Arduino plates；Trackside XBee modules, it is connected with first pinboard, is deposited for receive information and is stored in the trackside Arduino plates In.
- 3. people-the Che based on intelligent transportation-road information interaction system as claimed in claim 2, it is characterised in that described vehicle-mounted Device includes：Vehicle-mounted Arduino plates, it is connected with the vehicle-mounted vehicle body diagnostic system；Second pinboard, it is plugged on the vehicle-mounted Arduino plates；Vehicle-mounted XBee modules, it is plugged on second pinboard, is deposited for receive information and is stored in the vehicle-mounted Arduino In plate, it enters the reception and transmission of row information between the trackside XBee modules by ZigBee protocol；First bluetooth module, it is plugged on second pinboard, for reading information and carrying out Bluetooth communication.
- 4. people-the Che based on intelligent transportation-road information interaction system as claimed in claim 3, it is characterised in that the mobile phone Servicing unit includes：3rd Arduino plates；3rd pinboard, it is plugged on the 3rd Arduino plates；3rd XBee modules and the second bluetooth module, it is plugged on the 3rd pinboard, deposited simultaneously for receive information simultaneously It is stored in the 3rd Arduino plates, is entered between the 3rd XBee modules and the vehicle-mounted XBee modules by ZigBee protocol The reception and transmission of row information.
- 5. people-the Che based on intelligent transportation-road information interaction system as claimed in claim 3, it is characterised in that described second Pinboard is plugged on the vehicle-mounted Arduino plates by contact pin；The vehicle-mounted XBee modules and bluetooth module are inserted by contact pin It is connected on second pinboard.
- 6. people-the Che based on intelligent transportation-road information interaction system as claimed in claim 1, it is characterised in that also include too Positive energy electric power system, it is connected with the apparatus for measuring road, for being powered for the apparatus for measuring road.
- 7. a kind of people-Che based on intelligent transportation-road information interacting method, it is characterised in that comprise the following steps：Step 1：The coding for representing trackside information is stored with the trackside Arduino plates, the coding is by trackside XBee modules Read by the first pinboard, be sent to vehicle-mounted XBee modules, and via the storage of the second pinboard into vehicle-mounted Arduino plates, Read by bluetooth module, be sent to Mobile phone communication terminal；Step 2：The information of vehicles read is stored in vehicle-mounted Arduino plates by vehicle-mounted vehicle body diagnostic system, and establishes two-way Communication connection, is transferred to mobile phone servicing unit to be transferred to Mobile phone communication terminal by information by ZigBee protocol all the way；It is another It route vehicle-mounted XBee modules and information of vehicles is read from vehicle-mounted Arduino plates, and is inversely sent to trackside by ZigBee protocol XBee modules, the information of vehicles of reception is stored in trackside Arduino plates by it, and is uploaded to outside by trackside Arduino plates Cloud server.
- 8. people-the Che based on intelligent transportation-road information interacting method as claimed in claim 7, it is characterised in that the step Determination of the apparatus for measuring road to the frequency lambda of car-mounted device transmission information comprises the following steps in 1：Input car-mounted device receives the simultaneously frequency μ of processing information and is guarantee system normal operation, and all cars can receive Apparatus for measuring road send information and must to system free time probability carry out constraint Upper Probability value px；The number of vehicles n inputted in apparatus for measuring road information range of transmission；F=λ/μ, λ is made to be incremented by since 0, until meetingλ value now is recorded,Wherein, F is that system reaches load, and i is number of increments, p0Reach system free time probability when load is F；Now, λ is the frequency that apparatus for measuring road sends information to car-mounted device.
- 9. people-the Che based on intelligent transportation-road information interacting method as claimed in claim 8, it is characterised in that the step Determination of the car-mounted device to the frequency k of apparatus for measuring road transmission information comprises the following steps in 2：Obtaining can realize that car-mounted device sends the link length L of the data of information of vehicles, number of track-lines x, trackside to apparatus for measuring road Device analysis handles and uploaded the speed v for the data that car-mounted device is sentd, the average waiting time t of data in systems1, number According to the Maximum Constraint t of the stand-by period of transmission2, modifying factor j；Obtain real-time speed v and apparatus for measuring road can receive car-mounted device send information in the range of vehicle fleet n；Calculate and judgeWhether set up, if so, then carry out in next step；If not, illustrate that current vehicle speed is too fast, Road load is exceeded, has then prompted driver's reduction of speed, until this formula is set up；CalculateJudge nk≤vdWhether set up, if so, then carry out in next step；If not, illustrate that this queuing system service intensity is more than 1, it is unstable, now take k=vd/n；K is the frequency that car-mounted device sends information to apparatus for measuring road.
- 10. people-the Che based on intelligent transportation-road information interacting method as claimed in claim 9, it is characterised in that the step Number of vehicles in rapid 1 in trackside device information range of transmission reacquires frequency lambda when changing；In the step 2 in real time Speed and apparatus for measuring road can receive the vehicle fleet that car-mounted device is sent in the range of information and reacquire frequency when changing k。
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| CN113438637A (en) * | 2021-07-05 | 2021-09-24 | 中冶宝钢技术服务有限公司 | Bluetooth-based data interaction method, system and device between molten iron car and blast furnace |
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| CN109637137A (en) * | 2018-12-29 | 2019-04-16 | 浙江方大智控科技有限公司 | Traffic control system based on bus or train route collaboration |
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