CN1811847A - Expressway RFID vehicle monitoring system based on optical fiber network - Google Patents
Expressway RFID vehicle monitoring system based on optical fiber network Download PDFInfo
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- CN1811847A CN1811847A CN 200610031313 CN200610031313A CN1811847A CN 1811847 A CN1811847 A CN 1811847A CN 200610031313 CN200610031313 CN 200610031313 CN 200610031313 A CN200610031313 A CN 200610031313A CN 1811847 A CN1811847 A CN 1811847A
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Abstract
Present invention discloses a speedway vehicle real-time monitoring processing system to optical fiber network based on wireless RF identify (RFID) technologic technology. It contains installing built-in intelligent controller reading head on top of highway emergency telephone booth, When vehicle installed with RF identification card run into effective monitoring range, intelligent controller controlling reading head sending radio-frequency signal through microwave antenna, RF identification card generating induced current and transmitting telephone booth correlative position encoding etc relevant information which is red by reading head through aerial, and resolving, saving, transmitting and displaying on central server and connected visiting termination, to obtain graphic vehicle real-time information using control supervisor information system.
Description
Technical field
The invention belongs to the vehicle monitoring system field, (Radio Frequency Identification, RFID) technology realizes the vehicle on highway disposal system of monitoring in real time to be specifically related to utilize a kind of radio frequency identification based on fiber optic network.
Background technology
Along with the development of wireless communication technique, the GPS technology has been widely used in the track and localization and the monitoring of mobile surface targets.Particularly after U.S.'s cancellation SA restriction, its bearing accuracy and reliability are greatly improved.GSM (global public's digital mobile network) popularizes to the GPS broad application provides reliable guarantee, makes information transmission more convenient, also makes the operating cost of gps system that decline has by a relatively large margin been arranged.But the bearing accuracy of gps system is subjected to weather effect very serious, and satellite-signal receives bad its performance of area and availability and all has been subjected to serious restriction between indoor or housing-group etc.; Press the availability that the operation mode of short message charge can't guarantee information, occur the phenomenon that postpones, loses easily; Its locating speed is relatively slow, is difficult to discern, monitor the article of high-speed mobile, implements to dispose also relatively more expensive.
The RFID technology is a kind of non-contacting automatic identification technology, and its ultimate principle is to utilize radiofrequency signal and space coupling (inductance or electromagnetic coupled) transport property, realizes automatic identification and monitoring to target object.The RFID technology has multiple application, is particularly useful for the frequent occasion that changes data content of needs.But, follow the trail of in the system of article at applying RFID technology, often the RF recognition device is placed in the car, the information of utilizing the wireless communication technique transmission to obtain, it is slower to have data rate, the shortcoming that may lose efficacy to the article of high-speed motion.
Optical fiber communication has advantages such as message capacity is big, repeater span long, be not subjected to electromagnetic interference (EMI), aboundresources, optical fiber is in light weight, volume is little.Entered since " 95 ", the fiber optic network construction development of China's highway is very fast, and freeway net progressively forms, and highway communication system has begun to change to the wide-area communication of road network environment from the intercommunication on wall scroll road.Over all, the construction of highway fiber optic network has high input, facility advanced person but utilization factor is very low, has caused the huge wasting of resources.
Existing technology has solved the part difficulty of vehicle on highway monitoring problem, but still there is weak point in above-mentioned technology, and outstanding behaviours exists: the gps system technical sophistication, and the cost height has the instability of certain degree; The RFID onboard system must utilize wireless network, and speed is slow, precision is low.In order further to improve vehicle monitoring system, there is such demand: propose a kind of accuracy that improves Vehicular real time monitoring, strengthen the availability of vehicle dynamic information, and the vehicle monitoring system of realizing high quick client response.Especially this system needs to make full use of the existing infrastructure of highway, makes supplier that complicated service infrastructure can be provided and realizes facility and effective vehicle on highway monitor service.The present invention has proposed a kind of like this vehicle on highway supervisory system just.
Summary of the invention
The invention provides a kind of vehicle on highway method for real-time monitoring, can realize following function: the vehicle monitor information digitizing, for vehicle provides special-purpose RF identification card, can store by the relevant information of supervision vehicle; False proof, the tamper of RF identification card, every RF identification card all have globally unique sign number, and adopt the tamper technology to install; Far distance automaticization of not stopping identification can be discerned the vehicle of running at high speed; The blacklist vehicle is investigated automatically; EDI is provided interface, generates the special electronic message.
The invention provides a vehicle monitoring system based on the highway fiber optic network, it is by forming with the lower part: fiber optic network, highway emergency call booth, RF identification card, microwave antenna, read head, intelligent controller, control and management infosystem.
Wherein, highway emergency call booth is the necessary auxiliary facility of expressway construction, according to Chinese highway requirement is set, and per 1 kilometer an emergency call booth is installed.Therefore, the highway of rule setting emergency call booth along the line becomes on the highway sign significantly, each emergency call booth is made as a node, can effectively fits vehicle running path, reach the purpose of real-time monitoring driving vehicle by connection vehicle each node of process successively.
Wherein, the RF identification card is based on the ultrahigh frequency of RFID technology, passive, freedom from repairs electronic tag, adopts ceramic package to be with the stickup jelly directly to be attached on the windshield of vehicle in addition.Record institute subsides vehicle is in the legal numbering of related management department registration on the RF identification card, and system user is thought and needed the vehicle characteristics of record.The present invention has designed special-purpose and interim two kinds of RF identification cards.
Wherein, a day alignment RF identification card sends microwave signal it is activated, and the radio frequency signal of reception feedback sends it to read head.The antenna that the present invention adopts is a high-gain customization microwave antenna, and high directivity, operating distance is far away, can get rid of interference, to except that other direction radiation to positive dirction of working shaft own all not remarkable, safe.
Wherein, read head is used for reading automatically the data on the RF identification card in the microwave antenna visual field, and carries out legitimacy and judge and the relevant information collection.Read head of the present invention is to develop at highway general character infrastructure specially, can directly place highway emergency call booth top, and directly utilize fiber optic network to communicate by letter with the control and management infosystem by intelligent controller.
Wherein, intelligent controller is an embedded computer, and its control read head work is as the bridge of read head and fiber optic network.The invention provides a kind ofly like this to become to hang down basis, low-power consumption, be applicable to and place the intelligent controller of fiber optic network in the read head to have interfaces such as LAN, Com, I/O fully, its effect has: the state that detects read head by I/O; Control read head, activate or close antenna work by serial ports; Read-write RF identification card and to data encrypt, deciphering; Resolve command; By built-in fiber adapter, follow and the set communication protocol realization of central server and the message exchange of control and management infosystem.
Wherein, the control and management infosystem comprises gate inhibition's module, locating module, information acquisition module, information process analysis module, safety rescue module and other management application modules, realizes electronic basic information collection and data analysis excavation.
The present invention has considered a kind of special-purpose vehicle archive database, and the special disposal intelligent controller is to its information that provides.Can in this database, retrieve the details and the historical record of vehicle by unique RF identification card coding, for data analysis and excavation provide the basis; Time keeping by a vehicle process call box can calculate the whole driving path of vehicle, real time rate, exports by the correlation module of control and management infosystem again; Can form the personalized archives of vehicle by the analysis of vehicle historical record, and related with the RF identification card.
The present invention has considered a kind of communication protocol of intelligent controller and central server of special use, intelligent controller is set up connection-oriented special-purpose Socket with central server and is connected, vehicle location and other information are encapsulated in the packet, send to the other side by the Socket connection.Receiving-transmitting sides is followed unified packet structure and is encapsulated and resolve.
As mentioned above, total system need not provide any service infrastructure, also need not transform existing utility, easy for installation, operating distance is far away, antijamming capability is strong, processing speed is fast, reliable and stable, accuracy is high, realized quick and easy vehicle on highway monitoring, and the personal management of vehicle.
The present invention will describe in conjunction with instantiation with reference to following synoptic diagram, so that invention is better understood.Therefore, concrete condition shown below only comprises the understandable annotation to the principle of the invention and notion aspect, does not comprise CONSTRUCTED SPECIFICATION of the present invention.
Description of drawings
Fig. 1 is the synoptic diagram of system's each several part and working method thereof among the present invention.
Fig. 2 is the process flow diagram that vehicle in the highway is carried out complete monitoring.
Fig. 3 is the theory diagram of intelligent controller.
Fig. 4 is the logic module synoptic diagram of intelligent controller.
Embodiment
With reference to figure 1, RF identification card 4 is installed on the windshield of vehicle 5, or is installed in other suitable place, for example vehicle body side as required.The read head 1 of built-in intelligent controller is installed in highway emergency call booth 6 tops, and is connected with the central server 8 that the control and management infosystem is installed by highway fiber optic network 7.Microwave antenna 3 is placed the correct position on call box 6 sides.
In the time of in the vehicle 5 that RF identification card 4 is installed sails highway effective monitoring scope into, intelligent controller 2 control read heads 1 send out the radiofrequency signal of certain frequency by microwave antenna 3, RF identification card 4 produces induction current, send out position encoded and other relevant informations relevant with call box 6, read, resolve, also can be saved, transmit and show by read head 1 by antenna 3, on central server 8 and the browser 9 that is attached thereto, but the application controls management information system is obtained patterned vehicle 5 real-time information.
With reference to figure 2, vehicle 5 must read relevant information before entering highway, judges the type of this card by the zone bit of identification card 4.To carrying out the judgement that the temporary card term of validity and the same day pass in and out the highway number of times,, give and the identical processing of conventional card for satisfactory temporary card.Whether useless routine sticked into row card and the judgement of valid period, permit having the conventional vehicle 5 that blocks that meets the requirements and enter.
After vehicle 5 entered highway, system waited for the feedback of new positional information continuously.Whenever vehicle 5 time through a read head 1, produce a new positional information, system receives and also shows real-time position information, and vehicle 5 is monitored.Before not receiving next positional information, system is calculated and virtual vehicle 5 driving paths according to vehicle 5 historical speed, if system's (maximum duration that surpasses default) does not in a long time receive next feedback, then start determining program automatically, carry out accident prospecting, traffic jam processing or safety rescue.
When vehicle 5 is about to leave highway, whether temporary card of used identification card 4 will be judged by system, and temporary card is reclaimed, and write relative recording, and permit vehicle 5 and leave.
With reference to figure 3, intelligent controller 2 is powered by the integrated supply module 14 in inside, when it places magnetic field, inner DC voltage begins to rise, if supply voltage is lower than electrification reset 15 voltage threshold values, circuit always is in reset mode, can prevent unstable operation like this, turn-offs at this pattern modulated device 12.After supply voltage exceeded electrification reset 15 voltage threshold values, circuit began the reading mode reading configuration words and enter acquiescence, and between the configuration words reading duration, modulator 12 still is an off state.Give tacit consent under the reading mode when intelligent controller 2 is operated in, its monitoring aerial 3 signals are surveyed the order that may send from read head 1.In fact the overtime time of the long oversampling clock decompression machine of read head 1 magnetic field stand-by time 10, intelligent controller 2 just interrupts reading mode and waits for the order that read head 1 sends.When effective bidding model is detected, order with regard to resolved and execution, enter the acquiescence reading mode after the command execution again.Wherein, fiber adapter 17 can be realized the conversion of signal, make information be conveyed to central server 8 fast by fiber optic network 7, when intelligent controller 2 has data to transmit, logic module 13 will be sent out a signal to fiber adapter 17, its content comprises the type, length of data etc., and fiber adapter 17 is followed set protocol conversion and sent data, sends to return corresponding signal to logic module 13 after finishing.
With reference to figure 4, the calling in of the state of logic module 13 control intelligent controllers 2, configuration words, encode, decode, encryption etc., be the core of intelligent controller 2, it is made up of a plurality of submodules.Wherein, the state of controller 19 control intelligent controllers 2 mainly comprises: close electricity condition (power supply below PORlevel), power-up initializing, acquiescence reading mode, command process, prohibited mode.Work as the supply voltage level when powering on and be higher than the electrification reset threshold voltage, the configuration words content of EEPROM is called in configuration register 20, and intelligent controller 2 enters the acquiescence reading mode.Timing sequencer 18 obtains clock signal from clock decompression machine 10, required clock signal when producing digit rate clock and the work of other modules.Scrambler 21 will be encoded into continuous NRZ data before data are sent to modulator 12, have multiple option to realize multiple different coding, and encrypt, these be coded among the RFID commonly used (as Manchester, Bi-phase, Miller, PSK, FSK).Command decoder 22 detects the output of data decompression device 11, and (field stop) is detected when a field halted state, and it makes controller 19 forward the command process state to and the data that flow into are decoded.
Intelligent controller 2 is as follows with the communication protocol of central server 8 among the present invention: intelligent controller 2 can be submitted logging request to according to agreement, uploads request of data, stop to upload request of data, can realize landing, uploading data or stop transmission in the affirmation that obtains central server 8 or after permitting.Intelligent controller 2 and central server 8 any one party all can initiatively propose the abort communication process.
Among the present invention, the amount of capacity of RF identification card 4, installation site, institute's storing data item all can be set according to actual conditions, to satisfy the needs of each highway personal management.
Although the present invention is specifically described with reference to embodiment, it should be understood by one skilled in the art that under the situation that does not break away from the spirit and scope of the present invention, can make modification on the above-mentioned or other forms of details to the present invention.
Claims (1)
1, a kind of vehicle on highway of the radio RF recognition technology based on fiber optic network is the disposal system of monitoring in real time, by fiber optic network, highway emergency call booth, the RF identification card, microwave antenna, read head, intelligent controller, control and management infosystems etc. are partly formed, it is characterized in that: intelligent controller control read head sends out the radiofrequency signal of certain frequency by microwave antenna, the RF identification card produces induction current, send out position encoded and other relevant informations relevant with call box, read by read head by antenna, resolve, and can be saved, transmit and demonstration, on central server and the browser that is attached thereto, but the application controls management information system is obtained patterned vehicle real time.
Wherein, the RF identification card is installed on the vehicle body correct position, for example vehicle body side or windshield, and read head is installed in highway emergency call booth top, and is connected with the central server that the control and management infosystem is installed by the highway fiber optic network.
Wherein, intelligent controller is the embedded computer that is exclusively used in control this kind read head and is applicable to optical fiber communication, places in the read head.
This system also comprises special-purpose communication protocol, information management system and database.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610031313 CN1811847A (en) | 2006-03-08 | 2006-03-08 | Expressway RFID vehicle monitoring system based on optical fiber network |
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| Application Number | Priority Date | Filing Date | Title |
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| CN 200610031313 CN1811847A (en) | 2006-03-08 | 2006-03-08 | Expressway RFID vehicle monitoring system based on optical fiber network |
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| CN1811847A true CN1811847A (en) | 2006-08-02 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101171939B (en) * | 2006-11-01 | 2010-09-08 | 上海水产大学 | Seafood foods cold preservation wireless radio frequency monitor system and method |
| CN101751583B (en) * | 2009-07-29 | 2012-03-21 | 中国科学院自动化研究所 | System and method for recognizing motor vehicle built-in electronic tag |
-
2006
- 2006-03-08 CN CN 200610031313 patent/CN1811847A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101171939B (en) * | 2006-11-01 | 2010-09-08 | 上海水产大学 | Seafood foods cold preservation wireless radio frequency monitor system and method |
| CN101751583B (en) * | 2009-07-29 | 2012-03-21 | 中国科学院自动化研究所 | System and method for recognizing motor vehicle built-in electronic tag |
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