CN105006152A - Vehicle speed measuring system based on radio frequency identification and speed measuring method thereof - Google Patents
Vehicle speed measuring system based on radio frequency identification and speed measuring method thereof Download PDFInfo
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- CN105006152A CN105006152A CN201510358246.0A CN201510358246A CN105006152A CN 105006152 A CN105006152 A CN 105006152A CN 201510358246 A CN201510358246 A CN 201510358246A CN 105006152 A CN105006152 A CN 105006152A
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Abstract
The invention discloses a vehicle speed measuring system based on radio frequency identification and a speed measuring method thereof. The vehicle speed measuring system comprises an electronic tag, radio frequency identification systems and an upper computer, wherein the electronic tag is adhered to a front windshield of a vehicle; the radio frequency identification systems are set up on both sides of the road; each radio frequency identification system integrates a wireless transmitting/receiving module, a ranging module and a microprocessor, and the wireless transmitting/receiving module and the ranging module are each connected with the microprocessor; a chip is connected with the microprocessors through a protocol, and the radio frequency identification systems are used for carrying out information identification on the electronic tag and measuring moving speed of the vehicle; and the upper computer is connected with the radio frequency identification systems, and is connected with an information platform of a vehicle management center. The vehicle speed measuring system and the speed measuring method thereof solve the technical problem that speed of the vehicle is not easy to measure on the road.
Description
Technical field
The present invention relates to technical field of RFID, particularly a kind of vehicle speed measuring system based on radio-frequency (RF) identification and speed-measuring method thereof.
Background technology
Radio-frequency (RF) tag is the physical support of product electronic code (EPC), is attached on traceable article, can circulation worldwide identify it and read and write.RFID (Radio Frequency dentification) technology receives the concern of people in recent years as the gordian technique building " Internet of Things ".RFID technique early originates from Britain, and be applied in World War II and distinguish enemy and we's aircraft identity, the sixties in 20th century starts commercialization.RFID technique is a kind of automatic identification technology, and after U.S. Department of Defense specifies on January in 2005 1, all military materials all will use RFID label tag; FDA Food and Drug Administration (FDA) advises that pharmaceutical manufacturer utilized RFID to follow the tracks of normal medicine of faking from 2006.A series of action such as Walmart, Metro retail trade applying RFID technology have promoted RFID especially in global application upsurge.When 2000, the price of each RFID label tag is 1 dollar.Many researchers think that RFID label tag is very expensive, and only reducing costs could large-scale application.When 2005, the price of each RFID label tag is about 12 cents, and the price of present ultrahigh frequency RFID is about 10 cents.Can RFID wants large-scale application, is to reduce RFID label tag price on the one hand, bring value-added service after will seeing applying RFID on the other hand.The statistics of statistics office of European Union shows 2010, company's applying RFID technology of European Union 3%, and application distribution is in identity document and access control, supply chain and inventory tracking, vehicle toll collection, antitheft, production control, asset management.
Radio-frequency (RF) identification (RFID) is a kind of wireless communication technology, can read and write related data by radio signals identification specific objective, and without the need to setting up machinery or optical contact between recognition system and specific objective.
Wireless signal is the electromagnetic field by furnishing radio frequency, and data are sent out from the label be attached to article, with automatic Identification and these article of tracking.The elect magnetic field that some label sends from recognizer when identifying just can obtain energy, does not need battery; Also there is label itself to have power supply, and initiatively can send radiowave (electromagnetic field of furnishing radio frequency).Label contains the information of Electronic saving, can identify within several meters.With bar code unlike, radio-frequency (RF) tag does not need to be within recognizer sight line, can embed within tracked object yet.
Many industries have all used REID.Label is attached to an automobile just aborning, this car progress on a production line just can be followed the trail of by manufacturer.The place of medicine can be followed the trail of in warehouse.Radio-frequency (RF) tag also can invest on livestock and pet, facilitates the positive identification (actively identify and be meant to prevent several livestocks from using same identity) to livestock and pet.The identification card of radio-frequency (RF) identification can make employee be entered the building part of pinning, and the radio frequency transponder on automobile also can be used for imposing the expense in charging section and parking lot.
And carry out in velocity-measuring system to vehicle under steam at present, usually adopt high-definition camera to carry out discrimination speed-testing to vehicle, velocity-measuring system cost is comparatively large, and affects comparatively large by weather visibility, causes to test the speed to vehicle.On the other hand, REID does not also utilize and is measuring the speed of a motor vehicle, and particularly vehicle is in the process of running at high speed, and cannot carry out effectively real-time identification and vehicle speed measurement, add potential safety hazard to traffic to vehicle.
Summary of the invention
For above-mentioned technical matters, the invention discloses a kind of vehicle speed measuring system based on radio-frequency (RF) identification, road is provided with radio-frequency recognition system, information reading and vehicle speed measurement are carried out to the electronic tag that vehicle carries, the instantaneous velocity of vehicle and average velocity are uploaded on information platform, solves on road the technical matters that vehicle speed is not easily measured.
In order to realize according to object of the present invention, provide a kind of vehicle speed measuring system based on radio-frequency (RF) identification, comprising:
Electronic tag, it is sticked on the front windshield of vehicle, chip, Anneta module and radio frequency interface module is integrated with in described electronic tag, described Anneta module is connected with described radio frequency interface module, described radio frequency interface module is connected with described chip, is integrated with vehicle essential information, the owner information of described vehicle in described chip;
Radio-frequency recognition system, it is erected at road both sides, wireless transmission/receiver module, range finder module and microprocessor is integrated with in described radio-frequency recognition system, described wireless transmission/receiver module, range finder module are connected with microprocessor respectively, described chip is connected with described microprocessor with by agreement, and described radio-frequency recognition system is used for carrying out information identification and the measurement of vehicle translational speed to described electronic tag;
Host computer, it is connected with described radio-frequency recognition system, and described host computer is connected with the information platform of vehicle management center.
Preferably, described electronic tag and described vehicle are bound.
Preferably, include driving circuit in described range finder module, described driving circuit sends several pumping signals with different frequencies, and described pumping signal is sent by described wireless transmission/receiver module.
Preferably, the chip in described electronic tag receives pumping signal described in each, and produces corresponding response signal, and described response signal feeds back in described microprocessor.
Preferably, the vehicle essential information of described vehicle, owner information and the speed information that records are stored in described information platform.
Based on a speed-measuring method for the vehicle speed measuring system of radio-frequency (RF) identification, comprising:
Step one, vehicle cross erection the road of radio-frequency recognition system, and described radio-frequency recognition system identifies the electronic tag on vehicle, obtain communication connects and the information extracted in electronic tag is sent in host computer;
Step 2, radio-frequency recognition system record and electronic tag obtain the time T1 that communication is connected;
Step 3, range finder module include driving circuit, and described driving circuit sends several pumping signals with different frequencies, and described pumping signal is sent by described wireless transmission/receiver module;
Chip in step 4, electronic tag receives pumping signal described in each, and produces corresponding response signal, and described response signal feeds back in described microprocessor;
Step 5, microprocessor can calculate according to the time interval between the first response signal time of reception T3 and the second response signal time of reception T4 the running time T5 learning vehicle, T5=T4-T3, according to the time that sends T6 and the first response signal time of reception T3 of the first pumping signal, the residing distance S1 of primary importance can be calculated, S1=(T3-T6) C/2, according to the time that sends T7 and the second response signal time of reception T4 of the second pumping signal, the residing distance S2 of the second place can be calculated, S2=(T4-T7) C/2, wherein C is the light velocity, automobile's instant velocity V1=(S2-S1)/T5 can be known,
When step 6, vehicle sail out of the identification range of radio-frequency recognition system, electronic tag and radio-frequency recognition system communication disconnect, radio-frequency recognition system record and electronic tag disconnect the time T2 that communication is connected, the identification diameter of radio-frequency recognition system is L1, the average speed of vehicle is V2, V2=L1/ (T2-T1).
Preferably, described electronic tag and described vehicle carry out information binding.
Preferably, the average speed V1 of described vehicle and automobile's instant velocity V2 is sent in described information platform by host computer.
The present invention at least comprises following beneficial effect:
1, present invention achieves the vehicle speed measurement to vehicle of running at high speed, eliminate the impact of weather on vehicle speed measurement;
2, the present invention adopts radio-frequency (RF) identification to carry out vehicle speed measurement to vehicle, and system input cost is low, avoids the high-definition camera using price higher;
3, measure while the speed of a motor vehicle of many vehicles can be realized.
Part is embodied by explanation below by other advantage of the present invention, target and feature, part also will by research and practice of the present invention by those skilled in the art is understood.
Accompanying drawing explanation
Fig. 1 is system architecture schematic diagram of the present invention;
Fig. 2 is the schematic flow sheet of information identifying method of the present invention.
Embodiment
Below in conjunction with accompanying drawing, the present invention is described in further detail, can implement according to this with reference to instructions word to make those skilled in the art.
Should be appreciated that used hereinly such as " to have ", other element one or more do not allotted in " comprising " and " comprising " term or the existence of its combination or interpolation.
As shown in Figure 1 be a kind of way of realization according to the vehicle speed measuring system based on radio-frequency (RF) identification of the present invention, comprising:
Electronic tag, it is sticked on the front windshield of vehicle, chip, Anneta module and radio frequency interface module is integrated with in described electronic tag, described Anneta module is connected with described radio frequency interface module, described radio frequency interface module is connected with described chip, is integrated with vehicle essential information, the owner information of described vehicle in described chip;
Radio-frequency recognition system, it is erected at road both sides, wireless transmission/receiver module, range finder module and microprocessor is integrated with in described radio-frequency recognition system, described wireless transmission/receiver module, range finder module are connected with microprocessor respectively, described chip is connected with described microprocessor communication with by agreement, and described radio-frequency recognition system is used for carrying out information identification and the measurement of vehicle translational speed to described electronic tag;
Host computer, it is connected with described radio-frequency recognition system, and described host computer is connected with the information platform of vehicle management center.
Electronic tag and radio-frequency recognition system obtain after communication is connected, range finder module sends several distance measuring signals, microprocessor carries out the measurement of the speed of a motor vehicle according to the response signal time that the time that sends and the electronic tag of distance measuring signal return, measuring process is not by weather effect, simultaneously, without the need to expensive high-definition camera as identification equipment, decrease system cost, for this system provides strong competitive power.
In technique scheme, described electronic tag and described information of vehicles are bound, and that is, electronic tag is corresponding with this information of vehicles, a corresponding unique electronic tag of car.
In technique scheme, include driving circuit in described range finder module, microprocessor controls driving circuit and sends several pumping signals with different frequencies, and described pumping signal is sent by described wireless transmission/receiver module.
In technique scheme, the chip in described electronic tag receives pumping signal described in each, and produces corresponding response signal, and described response signal feeds back in described microprocessor.
In technique scheme, the vehicle essential information of described vehicle, owner information and the speed information recorded are stored in described information platform.
In another embodiment, propose a kind of speed-measuring method of the vehicle speed measuring system based on radio-frequency (RF) identification, as shown in Figure 2, comprising:
Step one, vehicle cross erection the road of radio-frequency recognition system, and described radio-frequency recognition system identifies the electronic tag on vehicle, obtain communication connects and the information extracted in electronic tag is sent in host computer; Be understandable that, vehicle speed measuring system of the present invention can carry out the mensuration of the speed of a motor vehicle simultaneously simultaneously to many cars, measures efficiency high;
Step 2, radio-frequency recognition system record and electronic tag obtain the time T1 that communication is connected;
Step 3, range finder module include driving circuit, and described driving circuit sends several pumping signals with different frequencies, and described pumping signal is sent by described wireless transmission/receiver module;
Chip in step 4, electronic tag receives pumping signal described in each, and produces corresponding response signal, and described response signal feeds back in described microprocessor;
Step 5, microprocessor can calculate according to the time interval between the first response signal time of reception T3 and the second response signal time of reception T4 the running time T5 learning vehicle, T5=T4-T3, according to the time that sends T6 and the first response signal time of reception T3 of the first pumping signal, the residing distance S1 of primary importance can be calculated, S1=(T3-T6) C/2, according to the time that sends T7 and the second response signal time of reception T4 of the second pumping signal, the residing distance S2 of the second place can be calculated, S2=(T4-T7) C/2, wherein C is the light velocity, automobile's instant velocity V1=(S2-S1)/T5 can be known,
When step 6, vehicle sail out of the identification range of radio-frequency recognition system, electronic tag and radio-frequency recognition system communication disconnect, radio-frequency recognition system record and electronic tag disconnect the time T2 that communication is connected, the identification diameter of radio-frequency recognition system is L1, the average speed of vehicle is V2, V2=L1/ (T2-T1).
The average speed V1 of described vehicle and automobile's instant velocity V2 is sent in described information platform by host computer.
From the above mentioned, the present invention present invention achieves the vehicle speed measurement to vehicle of running at high speed, and eliminates the impact of weather on vehicle speed measurement; The present invention adopts radio-frequency (RF) identification to carry out vehicle speed measurement to vehicle, and system input cost is low, avoids the high-definition camera using price higher, and measures while can realizing the speed of a motor vehicle of many vehicles, measures efficiency higher.
Although embodiment of the present invention are open as above, but it is not restricted to listed in instructions and embodiment utilization, it can be applied to various applicable the field of the invention completely, for those skilled in the art, can easily realize other amendment, therefore do not deviating under the universal that claim and equivalency range limit, the present invention is not limited to specific details and illustrates here and the legend described.
Claims (8)
1., based on a vehicle speed measuring system for radio-frequency (RF) identification, it is characterized in that, comprising:
Electronic tag, it is sticked on the front windshield of vehicle, chip, Anneta module and radio frequency interface module is integrated with in described electronic tag, described Anneta module is connected with described radio frequency interface module, described radio frequency interface module is connected with described chip, is integrated with vehicle essential information, the owner information of described vehicle in described chip;
Radio-frequency recognition system, it is erected at road both sides, wireless transmission/receiver module, range finder module and microprocessor is integrated with in described radio-frequency recognition system, described wireless transmission/receiver module, range finder module are connected with microprocessor respectively, described chip is connected with described microprocessor with by agreement, and described radio-frequency recognition system is used for carrying out information identification and the measurement to vehicle translational speed to described electronic tag;
Host computer, it is connected with described radio-frequency recognition system, and described host computer is connected with the information platform of vehicle management center.
2., as claimed in claim 1 based on the vehicle speed measuring system of radio-frequency (RF) identification, it is characterized in that, described electronic tag and described information of vehicles are bound.
3. as claimed in claim 2 based on the vehicle speed measuring system of radio-frequency (RF) identification, it is characterized in that, include driving circuit in described range finder module, described driving circuit sends several pumping signals with different frequencies, and described pumping signal is sent by described wireless transmission/receiver module.
4., as claimed in claim 3 based on the vehicle speed measuring system of radio-frequency (RF) identification, it is characterized in that, the chip in described electronic tag receives pumping signal described in each, and produces corresponding response signal, and described response signal feeds back in described microprocessor.
5. as claimed in claim 1 based on the vehicle speed measuring system of radio-frequency (RF) identification, it is characterized in that, the vehicle essential information of described vehicle, owner information and the speed information recorded are stored in described information platform.
6., as claimed in claim 1 based on the speed-measuring method of the vehicle speed measuring system of radio-frequency (RF) identification, it is characterized in that, comprising:
Step one, vehicle cross erection the road of radio-frequency recognition system, and described radio-frequency recognition system identifies the electronic tag on vehicle, obtain communication connects and the information extracted in electronic tag is sent in host computer;
Step 2, radio-frequency recognition system record and electronic tag obtain the time T1 that communication is connected;
Step 3, range finder module include driving circuit, and described driving circuit sends several pumping signals with different frequencies, and described pumping signal is sent by described wireless transmission/receiver module;
Chip in step 4, electronic tag receives pumping signal described in each, and produces corresponding response signal, and described response signal feeds back in described microprocessor;
Step 5, microprocessor can calculate the time interval T5 learning that vehicle travels according to the time interval between the first response signal time of reception T3 and the second response signal time of reception T4, T5=T4-T3, according to the time that sends T6 and the first response signal time of reception T3 of the first pumping signal, the residing distance S1 of primary importance can be calculated, S1=(T3-T6) C/2, according to the time that sends T7 and the second response signal time of reception T4 of the second pumping signal, the residing distance S2 of the second place can be calculated, S2=(T4-T7) C/2, wherein C is the light velocity, automobile's instant velocity V1=(S2-S1)/T5 can be known,
When step 6, vehicle sail out of the identification range of radio-frequency recognition system, electronic tag and radio-frequency recognition system communication disconnect, radio-frequency recognition system record and electronic tag disconnect the time T2 that communication is connected, the identification diameter of radio-frequency recognition system is L1, the average speed of vehicle is V2, V2=L1/ (T2-T1).
7., as claimed in claim 6 based on the vehicle speed measuring system of radio-frequency (RF) identification, it is characterized in that, described electronic tag and described vehicle carry out information binding.
8., as claimed in claim 6 based on the vehicle speed measuring system of radio-frequency (RF) identification, it is characterized in that, the average speed V1 of described vehicle and automobile's instant velocity V2 is sent in described information platform by host computer.
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Application publication date: 20151028 |