CN103778789A - Vehicle speed measuring method and system based on radio frequency identification - Google Patents

Vehicle speed measuring method and system based on radio frequency identification Download PDF

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Publication number
CN103778789A
CN103778789A CN201210410314.XA CN201210410314A CN103778789A CN 103778789 A CN103778789 A CN 103778789A CN 201210410314 A CN201210410314 A CN 201210410314A CN 103778789 A CN103778789 A CN 103778789A
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China
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rfid
vehicle
response signal
speed
speed calculation
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CN201210410314.XA
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Chinese (zh)
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马振洲
杨会平
张尊兰
王顺仁
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Aisino Corp
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Aisino Corp
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Priority to CN201210410314.XA priority Critical patent/CN103778789A/en
Publication of CN103778789A publication Critical patent/CN103778789A/en
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Abstract

The invention provides a vehicle speed measuring method and a system based on RFID (Radio Frequency Identification). The method comprises that: antennas of at least three RFID systems emit radio frequency signals outwardly with same emission time and emission angles, and the at least three RFID systems receive response signals of the radio frequency signals which carry vehicle information and are sent by a running vehicle; and the at least three RFID systems forward the response signals to a speed calculating system which calculates running speed of the vehicle in regions between any two of the three RFID systems according to time of the response signals sent by the at least three RFID systems and distance between the at least three RFID systems and the speed calculating system. Speed of multiple vehicles running in the same direction can be measured simultaneously, and speed measuring regions of the vehicles can be flexibly confirmed according to geographical positions of the RFID systems so that identification efficiency is high and installation and use cost is low.

Description

Vehicle speed measuring method based on radio frequency identification and system
Technical field
The present invention relates to vehicle speed measuring technical field, relate in particular to a kind of based on RFID(Radio Frequency Identification, radio frequency identification) vehicle speed measuring method and system.
Background technology
It is the one of the main reasons that traffic hazard takes place frequently that overspeed of vehicle travels, according to interrelated data incomplete statistics China drive over the speed limit occur traffic hazard account for the more than 30% of whole traffic hazards.The improvement behavior of driving over the speed limit is come critical positions by vehicle supervision department, all drop into every year a large amount of human and material resources, financial resources and administer the overspeed of vehicle behavior of travelling, but the traffic hazard causing owing to driving over the speed limit is still high, and have the trend increasing year by year.
The method that inspection overspeed of vehicle travels is now a lot, mainly comprises microwave radar speed-measuring method and camera video method for supervising.Microwave radar tests the speed accurately, but separate unit cost is too high, can not generally apply on a large scale; Camera video method for supervising separate unit cost is lower, and in the time that driving vehicle is more in the same way, discrimination, test accuracy are just very low, and image transmitting data volume is large, and the transmission time is long, and communication cost is high, and real-time is poor, also will be through artificial judgement.
Therefore it is very necessary, developing a kind of vehicle speed measuring system efficient, real-time and that application cost is low.
Summary of the invention
Embodiments of the invention provide a kind of vehicle speed measuring method and system based on RFID, to realize efficiently, accurately and real-time vehicle to be tested the speed.
Based on a vehicle speed measuring method for wireless radio frequency discrimination RFID, comprising:
The antenna of at least 3 rfid systems is according to identical launch time, the outside emitting radio frequency signal of emission angle, and described at least 3 rfid systems receive the response signal of the described radiofrequency signal of carrying information of vehicles of the vehicle transmission of travelling;
Described response signal is transmitted to speed calculation system by described at least 3 rfid systems, distance described in described speed calculation system basis receives between time and described at least 3 rfid systems and the described speed calculation system of the response signal of at least 3 rfid system transmissions, calculates the travel speed in the region between any two rfid systems of described vehicle in described at least 3 rfid systems.
A vehicle speed measuring system based on wireless radio frequency discrimination RFID, comprising:
At least 3 rfid systems, be used for by antenna according to identical launch time, the outside emitting radio frequency signal of emission angle, receive after the response signal of the described radiofrequency signal of carrying information of vehicles of the vehicle transmission of travelling, described response signal is transmitted to speed calculation system
Speed calculation system, distance described in receiving for basis between time and described at least 3 rfid systems and the described speed calculation system of the response signal of at least 3 rfid system transmissions, calculates the travel speed in the region between any two rfid systems of described vehicle in described at least 3 rfid systems.
The technical scheme being provided by the embodiment of the invention described above can be found out, the embodiment of the present invention is passed through the antenna of at least 3 rfid systems according to identical launch time, the outside emitting radio frequency signal of emission angle, can test the speed to many vehicles that travel in the same way simultaneously, and can be according to the region of testing the speed of definite vehicle flexibly, the geographic position of at least 3 rfid systems, recognition efficiency is high, and cost of installation and use is low.
Accompanying drawing explanation
In order to be illustrated more clearly in the technical scheme of the embodiment of the present invention, below the accompanying drawing of required use during embodiment is described is briefly described, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skills, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
The principle schematic of a kind of vehicle speed measuring method based on RFID that Fig. 1 provides for the embodiment of the present invention one;
The concrete processing flow chart of a kind of vehicle speed measuring method based on RFID that Fig. 2 provides for the embodiment of the present invention one;
The one that Fig. 3 provides for the embodiment of the present invention one arranges 3 rfid systems: the schematic diagram of rfid system 1, rfid system 2 and rfid system 3;
The rfid system of a kind of 3 that Fig. 4 provides for the embodiment of the present invention one adopts drive test street lamp column mounting means schematic diagram;
The read-write area schematic of the read write line of a kind of each rfid system that Fig. 5 provides for the embodiment of the present invention one;
3 rfid systems employing portal frame mounting means schematic diagram of one that Fig. 6 provides for the embodiment of the present invention one;
The schematic diagram communicating by cloud network between a kind of at least 3 rfid systems that Fig. 7 provides for the embodiment of the present invention one and speed calculation system;
The structural drawing of a kind of vehicle speed measuring system based on RFI D that Fig. 8 provides for the embodiment of the present invention two.
Embodiment
For ease of the understanding to the embodiment of the present invention, be further explained explanation below in conjunction with accompanying drawing as an example of several specific embodiments example, and each embodiment does not form the restriction to the embodiment of the present invention.
Embodiment mono-
As shown in Figure 1, concrete treatment scheme as shown in Figure 2, comprises following treatment step to the principle schematic that embodiment provides a kind of vehicle speed measuring method based on RFID:
Step 21, a speed calculation system is set, at least 3 rfid systems, carry out data transmission by wired data communication mode or 3G radio data communication mode between above-mentioned speed calculation system and each rfid system.Above-mentioned speed calculation system by 3G radio communication or and wired data communication transmit data and receive instruction to background data center, above-mentioned rfid system comprises read write line and antenna, each read write line connects 1 or and 1 above antenna.Above-mentioned speed calculation system can be computer system.
Above-mentioned speed calculation system can be arranged near rfid system wherein, also can be arranged in the middle of each rfid system.In above-mentioned speed calculation system, need the distance of pre-stored above-mentioned speed calculation system to the antenna of each rfid system.The center line of the antenna of above-mentioned each rfid system and ground level become identical set angle, and the antenna of each rfid system is according to identical launch time, the outside emitting radio frequency signal of emission angle.
Such as, as shown in Figure 3, rfid system 1, rfid system 2 and rfid system 3 are set, each rfid system by antenna according to directed outwards emitting radio frequency signal of identical time interval.
Above-mentioned at least 3 rfid systems are arranged on respectively on equally spaced, highly consistent mark post thing with back-and-forth mode, this mark post thing can be on portal frame crossbeam or on drive test column or drive test electric light column etc., and the center line of the antenna of each rfid system and ground level become identical set angle.As shown in Figure 4, the rfid system of 3 adopts drive test street lamp column mounting means, the read-write area schematic of the read write line that Fig. 5 is each rfid system, and Fig. 6 is that 3 rfid systems adopt portal frame mounting means schematic diagram.
Step 22, described at least 3 rfid systems receive the response signal of the described radiofrequency signal of carrying information of vehicles of the vehicle transmission of travelling, and described response signal is transmitted to speed calculation system by described at least 3 rfid systems.
Take 3 rfid systems shown in Fig. 3 as example, in the time that the driving vehicle with electronic tag is read and write region by 1 of rfid system, above-mentioned electronic tag receives above-mentioned radiofrequency signal, electronic tag is waken up, this electronic tag is launched the response signal 1 of carrying information of vehicles to rfid system 1, and above-mentioned information of vehicles comprises the identification information of vehicle.The antenna reception of rfid system 1, after above-mentioned response signal 1, is identified the information of vehicles carrying in above-mentioned response signal 1 by read write line, rfid system 1 forwards above-mentioned response signal 1 of carrying information of vehicles to speed calculation system.Speed calculation system self is with real-time clock, when receiving after the response signal 1 that rfid system 1 sends, by the information of vehicles carrying in response signal 1 with receive together with the time t1 of response signal 1 and store.
In the time that the driving vehicle with electronic tag passes through the read-write region of rfid system 2, above-mentioned electronic tag receives above-mentioned radiofrequency signal, and electronic tag is waken up, and this electronic tag is launched the response signal 2 of carrying information of vehicles to rfid system 2.The antenna reception of rfid system 2, after above-mentioned response signal 2, is identified the information of vehicles carrying in above-mentioned response signal 2 by read write line, rfid system 2 forwards above-mentioned response signal 2 of carrying information of vehicles to speed calculation system.Speed calculation system self is with real-time clock, when receiving after the response signal 2 that rfid system 2 sends, by the information of vehicles carrying in response signal 2 with receive together with the time t2 of response signal 2 and store.
In the time that the driving vehicle with electronic tag passes through the read-write region of rfid system 3, above-mentioned electronic tag receives above-mentioned radiofrequency signal, and electronic tag is waken up, and this electronic tag is launched the response signal 3 of carrying information of vehicles to rfid system 3.The antenna reception of rfid system 3, after above-mentioned response signal 3, is identified the information of vehicles carrying in above-mentioned response signal 3 by read write line, rfid system 3 forwards the above-mentioned notification signal 3 that carries information of vehicles to speed calculation system.Speed calculation system self is with real-time clock, when receiving after the notification signal 3 that rfid system 3 send, the information of vehicles carrying in notification signal 3 stored together with the time of reception notification signal 3 t3.
Distance described in step 23, described speed calculation system basis receive between time and described at least 3 rfid systems and the described speed calculation system of the response signal of at least 3 rfid system transmissions, calculates the travel speed in the region between any two rfid systems of described vehicle in described at least 3 rfid systems.
Described speed calculation system is chosen arbitrarily two rfid systems in described at least 3 rfid systems: rfid system 1 and rfid system 2, described speed calculation system determines that according to the clock of certainly establishing the time that receives the response signal that described rfid system 1 sends is t1, the time that receives the response signal that described rfid system 2 sends is t2, calculates mistiming Δ t 1-2=| t1-t2|;
Described speed calculation system obtains the distance S1 of pre-stored described speed calculation system to the antenna of rfid system 1, arrives the distance S2 of the antenna of rfid system 2, calculates range difference s 1-2=| s1-s2|;
Described speed calculation system calculates the travel speed in the region of described vehicle between described rfid system 1 and rfid system 2 according to formula below:
v = s 1 - 2 Δt 1 - 2
Whether step 24, speed calculation system are differentiated according to the Vehicle Speed calculating and the max speed setting value that has been stored in computer-internal the vehicle travelling and are exceeded the speed limit, hypervelocity information and information of vehicles are carried out to association store when differentiating when having the vehicle of driving over the speed limit, and send hypervelocity information and information of vehicles to background data center.
In actual applications, between above-mentioned at least 3 rfid systems and speed calculation system, communicate by cloud network as shown in Figure 7, when being formed vehicle networked system and carried out vehicle speed measuring by above-mentioned at least 3 rfid systems of cloud network and speed calculation system, the real-time clock carrying in speed calculation system can carry out automatic correcting time by cloud network.
Embodiment bis-
This embodiment provides a kind of vehicle speed measuring system based on RFID, and its concrete structure as shown in Figure 8, comprises following unit:
At least 3 rfid systems 81, be used for by antenna according to identical launch time, the outside emitting radio frequency signal of emission angle, receive after the response signal of the described radiofrequency signal of carrying information of vehicles of the vehicle transmission of travelling, described response signal is transmitted to speed calculation system.
Speed calculation system 82, distance described in receiving for basis between time and described at least 3 rfid systems and the described speed calculation system of the response signal of at least 3 rfid system transmissions, calculates the travel speed in the region between any two rfid systems of described vehicle in described at least 3 rfid systems.
Concrete, described at least 3 rfid systems 31 are arranged on respectively on equally spaced, highly consistent mark post thing with back-and-forth mode, the center line of the antenna of each rfid system and ground level become identical set angle, and described mark post thing comprises on portal frame crossbeam or on drive test column or drive test electric light column.
Concrete, described rfid system can comprise:
Radiofrequency signal sending module 811, for by antenna according to identical launch time, the outside emitting radio frequency signal of emission angle;
Response signal processing module 812, the response signal of the described radiofrequency signal of carrying information of vehicles sending for the electronic tag by antenna reception vehicle, identify the information of vehicles carrying in described response signal by read write line, the response signal of carrying information of vehicles described in forwarding to speed calculation system.
Concrete, described speed calculation system 82 can comprise:
Range information memory module 821, the distance for pre-stored described speed calculation system to the antenna of each rfid system.
Measured zone is selected module 822, for choosing arbitrarily two rfid systems at described at least 3 rfid systems: rfid system 1 and rfid system 2, determine that the region between described rfid system 1 and rfid system 2 is the region of testing the speed;
Speed calculation module 823, determines that for the clock according to certainly establishing the time that receives the response signal that described rfid system 1 sends is t1, and the time that receives the response signal that described rfid system 2 sends is t2, calculates mistiming Δ t 1-2=| t1-t2|;
Obtain the described speed calculation system of described range information memory module storage to the distance S1 of the antenna of rfid system 1, arrive the distance S2 of the antenna of rfid system 2, calculate range difference s 1-2=| s1-s2|;
Calculate described vehicle in the described travel speed testing the speed in region according to formula below:
v = s 1 - 2 Δt 1 - 2
The detailed process and the preceding method embodiment that carry out the vehicle speed measuring based on RFID by the system of the embodiment of the present invention are similar, repeat no more herein.
One of ordinary skill in the art will appreciate that: accompanying drawing is the schematic diagram of an embodiment, the module in accompanying drawing or flow process might not be that enforcement the present invention is necessary.
One of ordinary skill in the art will appreciate that: the module in the equipment in embodiment can be described and be distributed in the equipment of embodiment according to embodiment, also can carry out respective change and be arranged in the one or more equipment that are different from the present embodiment.The module of above-described embodiment can be merged into a module, also can further split into multiple submodules.
To sum up above-mentioned, the embodiment of the present invention is passed through the antenna of at least 3 rfid systems according to identical launch time, the outside emitting radio frequency signal of emission angle, can test the speed to many vehicles that travel in the same way simultaneously, and can be according to the region of testing the speed of definite vehicle flexibly, the geographic position of at least 3 rfid systems, recognition efficiency is high, accurate, automaticity is high, real-time and cost of installation and use is low.
Function Extension has been carried out in the network application of field RFID of car by the embodiment of the present invention, after networking, can not only realize driving vehicle location, tracking, driving trace record, the functions such as information of vehicles is checked automatically, non-parking charge, have also realized Vehicle Speed inspection function.Can detect in time when detecting after the vehicle of driving over the speed limit, be sent to after background data center, process in time.
Above-mentioned above; only for preferably embodiment of the present invention, but protection scope of the present invention is not limited to this, is anyly familiar with in technical scope that those skilled in the art disclose in the present invention; the variation that can expect easily or replacement, within all should being encompassed in protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection domain of claim.

Claims (10)

1. the vehicle speed measuring method based on wireless radio frequency discrimination RFID, is characterized in that, comprising:
The antenna of at least 3 rfid systems is according to identical launch time, the outside emitting radio frequency signal of emission angle, and described at least 3 rfid systems receive the response signal of the described radiofrequency signal of carrying information of vehicles of the vehicle transmission of travelling;
Described response signal is transmitted to speed calculation system by described at least 3 rfid systems, distance described in described speed calculation system basis receives between time and described at least 3 rfid systems and the described speed calculation system of the response signal of at least 3 rfid system transmissions, calculates the travel speed in the region between any two rfid systems of described vehicle in described at least 3 rfid systems.
2. the vehicle speed measuring method based on RFID according to claim 1, is characterized in that, described at least 3 rfid systems receive the response signal of the described radiofrequency signal of carrying information of vehicles of the vehicle transmission of travelling, and comprising:
The center line of the antenna of each rfid system and ground level become identical set angle, the antenna of each rfid system is according to identical launch time, the outside emitting radio frequency signal of emission angle, in the time that the vehicle with electronic tag passes through the read-write region of rfid system, described electronic tag receives the radiofrequency signal that described rfid system sends, described electronic tag is waken up, and described electronic tag carries the response signal of the described radiofrequency signal of information of vehicles to described rfid system transmitting.
3. the vehicle speed measuring method based on RFID according to claim 1, is characterized in that, in described speed calculation system, pre-stored described speed calculation system is to the distance of the antenna of each rfid system.
4. according to the vehicle speed measuring method based on RFID described in claim 1 or 2 or 3, it is characterized in that, distance described in described speed calculation system basis receives between time and described at least 3 rfid systems and the described speed calculation system of the response signal of at least 3 rfid system transmissions, calculate the travel speed in the region between any two rfid systems of described vehicle in described at least 3 rfid systems, comprising:
Described speed calculation system is chosen arbitrarily two rfid systems in described at least 3 rfid systems: rfid system 1 and rfid system 2, described speed calculation system determines that according to the clock of certainly establishing the time that receives the response signal that described rfid system 1 sends is t1, the time that receives the response signal that described rfid system 1 sends is t1, the time that receives the response signal that described rfid system 2 sends is t2, calculates mistiming Δ t 1-2=| t1-t2|;
Described speed calculation system obtains the distance S1 of pre-stored described speed calculation system to the antenna of rfid system 1, arrives the distance S2 of the antenna of rfid system 2, calculates range difference s 1-2=| s1-s2|;
Described speed calculation system calculates the travel speed in the region of described vehicle between described rfid system 1 and rfid system 2 according to formula below:
5. the vehicle speed measuring system based on wireless radio frequency discrimination RFID, is characterized in that, comprising:
At least 3 rfid systems, be used for by antenna according to identical launch time, the outside emitting radio frequency signal of emission angle, receive after the response signal of the described radiofrequency signal of carrying information of vehicles of the vehicle transmission of travelling, described response signal is transmitted to speed calculation system
Speed calculation system, distance described in receiving for basis between time and described at least 3 rfid systems and the described speed calculation system of the response signal of at least 3 rfid system transmissions, calculates the travel speed in the region between any two rfid systems of described vehicle in described at least 3 rfid systems.
6. the vehicle speed measuring system based on RFID according to claim 5, it is characterized in that, described each rfid system is arranged on respectively on equally spaced, highly consistent mark post thing with back-and-forth mode, and the center line of the antenna of each rfid system and ground level become identical set angle.
7. the vehicle speed measuring system based on RFID according to claim 6, is characterized in that, described mark post thing comprises on portal frame crossbeam or on drive test column or drive test electric light column.
8. the vehicle speed measuring system based on RFID according to claim 5, is characterized in that, described rfid system comprises:
Radiofrequency signal sending module, for by antenna according to identical launch time, the outside emitting radio frequency signal of emission angle;
Response signal processing module, the response signal of the described radiofrequency signal of carrying information of vehicles sending for the electronic tag by antenna reception vehicle, identify the information of vehicles carrying in described response signal by read write line, the response signal of carrying information of vehicles described in forwarding to speed calculation system.
9. according to the vehicle speed measuring system based on RFID described in claim 5 or 6 or 7 or 8, it is characterized in that, described speed calculation system comprises:
Range information memory module, the distance for pre-stored described speed calculation system to the antenna of each rfid system.
10. the vehicle speed measuring system based on RFID according to claim 9, is characterized in that, described speed calculation system also comprises:
Measured zone is selected module, for choosing arbitrarily two rfid systems at described at least 3 rfid systems: rfid system 1 and rfid system 2, determine that the region between described rfid system 1 and rfid system 2 is the region of testing the speed;
Speed calculation module, the time that receives the response signal that described rfid system 1 sends for determining according to the clock of certainly establishing is t1, the time that receives the response signal that described rfid system 1 sends is t1, the time that receives the response signal that described rfid system 2 sends is t2, calculates mistiming Δ t 1-2=| t1-t2|;
Obtain the described speed calculation system of described range information memory module storage to the distance S1 of the antenna of rfid system 1, arrive the distance S2 of the antenna of rfid system 2, calculate range difference s 1-2=| s1-s2|;
Calculate described vehicle in the described travel speed testing the speed in region according to formula below:
CN201210410314.XA 2012-10-24 2012-10-24 Vehicle speed measuring method and system based on radio frequency identification Pending CN103778789A (en)

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Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104157146A (en) * 2014-07-14 2014-11-19 公安部交通管理科学研究所 Automobile running speed calculation method based on ultrahigh frequency radio frequency identification
CN104299423A (en) * 2014-11-03 2015-01-21 合肥意成信息科技有限公司 Method for monitoring driving speed by means of street lamp radio-frequency technology
CN104299424A (en) * 2014-11-03 2015-01-21 合肥意成信息科技有限公司 Method for prompting driving speed by means of street lamp radio-frequency technology
CN104320884A (en) * 2014-11-03 2015-01-28 合肥意成信息科技有限公司 Control method for automatically controlling street lamps through radio frequency technology
CN104408951A (en) * 2014-11-03 2015-03-11 合肥意成信息科技有限公司 System employing street lamp radio frequency technology for driving speed prompting and monitoring
CN105006152A (en) * 2015-06-25 2015-10-28 苏州木兰电子科技有限公司 Vehicle speed measuring system based on radio frequency identification and speed measuring method thereof
CN105321355A (en) * 2015-12-04 2016-02-10 南京苗苗智能科技有限公司 Intelligent expressway overspeed monitoring system of Internet of things
CN105629807A (en) * 2014-10-30 2016-06-01 国家电网公司 High-speed anti-overspeed control system based on power line communication
CN107170244A (en) * 2017-07-11 2017-09-15 吴华 A kind of intellectual traffic control method and apparatus
CN109686112A (en) * 2018-12-27 2019-04-26 航天信息股份有限公司 A kind of moving vehicle real time speed measuring method and system based on vehicle electric mark
CN110288846A (en) * 2019-06-25 2019-09-27 江西省高速公路联网管理中心 A kind of covering system of V2X roadside unit

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100567963B1 (en) * 2004-10-20 2006-04-05 아주대학교산학협력단 Method for providing high-speed access of tag identification by using partial response framed slotted aloha algorithm in rfid system
US7388497B1 (en) * 2003-09-17 2008-06-17 The United States Of America As Represented By The Secretary Of The Navy Radio frequency identification tag
CN102226932A (en) * 2011-05-31 2011-10-26 东北大学 Vehicle speed measuring method based on radio frequency identification technology

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7388497B1 (en) * 2003-09-17 2008-06-17 The United States Of America As Represented By The Secretary Of The Navy Radio frequency identification tag
KR100567963B1 (en) * 2004-10-20 2006-04-05 아주대학교산학협력단 Method for providing high-speed access of tag identification by using partial response framed slotted aloha algorithm in rfid system
CN102226932A (en) * 2011-05-31 2011-10-26 东北大学 Vehicle speed measuring method based on radio frequency identification technology

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* Cited by examiner, † Cited by third party
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CN105629807B (en) * 2014-10-30 2019-01-25 国家电网公司 The anti-overspeed control system of high speed based on power line carrier, PLC
CN105629807A (en) * 2014-10-30 2016-06-01 国家电网公司 High-speed anti-overspeed control system based on power line communication
CN106228814B (en) * 2014-11-03 2018-06-08 宁波设会物联网科技有限公司 A kind of method that road speed prompting is carried out by street lamp radio-frequency technique
CN104408951A (en) * 2014-11-03 2015-03-11 合肥意成信息科技有限公司 System employing street lamp radio frequency technology for driving speed prompting and monitoring
CN104320884A (en) * 2014-11-03 2015-01-28 合肥意成信息科技有限公司 Control method for automatically controlling street lamps through radio frequency technology
CN106358348B (en) * 2014-11-03 2018-08-03 宁波设会物联网科技有限公司 A method of running speed prompt is carried out by street lamp radio-frequency technique
CN104299424A (en) * 2014-11-03 2015-01-21 合肥意成信息科技有限公司 Method for prompting driving speed by means of street lamp radio-frequency technology
CN106228815A (en) * 2014-11-03 2016-12-14 宁波设会物联网科技有限公司 A kind of system being carried out road speed prompting and monitoring by street lamp radio-frequency technique
CN106228814A (en) * 2014-11-03 2016-12-14 宁波设会物联网科技有限公司 A kind of method carrying out road speed prompting by street lamp radio-frequency technique
CN106251644A (en) * 2014-11-03 2016-12-21 宁波设会物联网科技有限公司 A kind of method carrying out road speed monitoring by street lamp radio-frequency technique
CN104299423A (en) * 2014-11-03 2015-01-21 合肥意成信息科技有限公司 Method for monitoring driving speed by means of street lamp radio-frequency technology
CN106358348A (en) * 2014-11-03 2017-01-25 宁波设会物联网科技有限公司 Method for prompting running speed through street lamp radio-frequency technique
CN106408967A (en) * 2014-11-03 2017-02-15 宁波设会物联网科技有限公司 Vehicle travel speed prompting and monitoring system using road lamp radio frequency technology
CN106251644B (en) * 2014-11-03 2018-08-03 宁波设会物联网科技有限公司 A method of running speed monitoring is carried out by street lamp radio-frequency technique
CN106228815B (en) * 2014-11-03 2018-06-08 宁波设会物联网科技有限公司 A kind of system that road speed prompting and monitoring are carried out by street lamp radio-frequency technique
CN106251645A (en) * 2014-11-03 2016-12-21 宁波设会物联网科技有限公司 A kind of method carrying out road speed monitoring by street lamp radio-frequency technique
CN105006152A (en) * 2015-06-25 2015-10-28 苏州木兰电子科技有限公司 Vehicle speed measuring system based on radio frequency identification and speed measuring method thereof
CN105321355A (en) * 2015-12-04 2016-02-10 南京苗苗智能科技有限公司 Intelligent expressway overspeed monitoring system of Internet of things
CN107170244A (en) * 2017-07-11 2017-09-15 吴华 A kind of intellectual traffic control method and apparatus
CN109686112A (en) * 2018-12-27 2019-04-26 航天信息股份有限公司 A kind of moving vehicle real time speed measuring method and system based on vehicle electric mark
CN110288846A (en) * 2019-06-25 2019-09-27 江西省高速公路联网管理中心 A kind of covering system of V2X roadside unit

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Application publication date: 20140507