CN202748846U - DSRC (Dedicated Short Range Communication)-based vehicle positioning device and DSRC application system - Google Patents
DSRC (Dedicated Short Range Communication)-based vehicle positioning device and DSRC application system Download PDFInfo
- Publication number
- CN202748846U CN202748846U CN 201220284342 CN201220284342U CN202748846U CN 202748846 U CN202748846 U CN 202748846U CN 201220284342 CN201220284342 CN 201220284342 CN 201220284342 U CN201220284342 U CN 201220284342U CN 202748846 U CN202748846 U CN 202748846U
- Authority
- CN
- China
- Prior art keywords
- signal
- antenna
- obu
- rsu
- receiving
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 230000006854 communication Effects 0.000 title claims abstract description 10
- 238000004891 communication Methods 0.000 title claims abstract description 9
- 238000012545 processing Methods 0.000 claims abstract description 24
- 230000004888 barrier function Effects 0.000 claims description 6
- 238000000034 method Methods 0.000 abstract description 20
- 238000005562 fading Methods 0.000 abstract description 3
- 101001093748 Homo sapiens Phosphatidylinositol N-acetylglucosaminyltransferase subunit P Proteins 0.000 description 10
- 238000006243 chemical reaction Methods 0.000 description 8
- 238000005516 engineering process Methods 0.000 description 6
- 238000001914 filtration Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 230000003993 interaction Effects 0.000 description 5
- 239000004744 fabric Substances 0.000 description 3
- 230000004807 localization Effects 0.000 description 3
- 238000007493 shaping process Methods 0.000 description 3
- 241000282693 Cercopithecidae Species 0.000 description 2
- 230000003044 adaptive effect Effects 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 230000011514 reflex Effects 0.000 description 2
- 239000013598 vector Substances 0.000 description 2
- 230000032683 aging Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 238000012790 confirmation Methods 0.000 description 1
- 230000005764 inhibitory process Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 230000010287 polarization Effects 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Images
Landscapes
- Radar Systems Or Details Thereof (AREA)
Abstract
The application discloses a vehicle positioning device and a DSRC (Dedicated Short Range Communication) application system. The vehicle positioning device comprises a positioning antenna, a signal receiver, a digital processor, and a digital beam shaper, wherein the positioning antenna comprises at least three receiving antennas which are arranged on a same straight line, and the receiving antennas are used for receiving microwave signals sent by a same OBU (On-Board Unit); the signal receiver is connected with the positioning antenna and used for receiving the microwave signals and then inputting the microwave signals into the digital processor; the digital processor is connected with the signal receiver and used for performing digital processing on the microwave signals; and the digital beam shaper is connected with the digital processor and used for performing weighted summation processing on the signals after digital processing to form beam signals, determining an azimuth angle corresponding to the beam signals with the maximum signal-to-noise ratio, and obtaining position information of the OBU. According to the application, the positioning process is less prone to being affected by signal reflection and multi-path fading so that the precision is relatively high; and the vehicle positioning device is conductive to enabling an RSU (Rate Sensor Unit) to accurately judge whether the OBU sending the microwave signals is in a lane region covered by an RSU antenna or not, and the normal operation of the DSRC application system is ensured.
Description
Technical field
The application relates to intelligent transportation (ITS:Intelligent Transportation System) field, relates in particular to a kind of vehicle locating device and DSRC application system based on Dedicated Short Range Communications, (DSRC:Dedicated Short Range Communication).
Background technology
In electric non-stop toll (ETC:Electronic Toll Collection) system, the roadside unit (RSU:RSU:Road Side Unit) that is arranged on the road is undertaken in the process of information interaction with the board units (OBU:On-board Units) that is installed on the vehicle by the DSRC technology, RSU should be only communicates by letter with OBU in the zone, track of this RSU antenna cover, to keep accuracy and the reliability of communication and charge.Yet sometimes, RSU can not determine and identify in the zone, track whether OBU be in this RSU antenna cover, therefore this RSU might communicate with all OBU that sends answer signal, for example the OBU in some other zone, track has sent answer signal to RSU mistakenly owing to having received the RSU signal that is reflected, and will continue to communicate with this RSU.In the process that RSU communicates with a plurality of OBU simultaneously, be easy to occur monkey chatter or with problems such as car interference, the mistake that causes deducting fees for example repeats to deduct fees to some vehicle, and some vehicle is not had charging, therefore affected the normal operation of ETC system.Especially when the ETC system applies in multilane Free-flow (MLFF:Multilane free flow) pattern lower time, because road is not separated the track and railing is set, vehicle allows high speed current in the situation that do not limit the track, therefore is easy to occur the situation that OBU communicates by letter with a plurality of RSU or same RSU communicates by letter with a plurality of OBU.
For fear of the appearance of above situation, RSU is only communicated by letter with OBU in the zone, track of RSU antenna cover, the ETC system has introduced vehicle positioning technology, guarantees RSU only to the communication of the OBU in its antenna coverage areas, communicates by letter normally and deducts fees guaranteeing.Vehicle positioning technology such as the applying date of a kind of existing ETC of being applied to system are on Dec 27th, 2010, application number is 201010608098.0, denomination of invention is the Chinese invention patent of " locating device and the method for board units in a kind of ETC system ", it arranges the different receiving antenna in a plurality of positions in RSU, be respectively applied to receive the microwave signal that OBU sends, and the field intensity intensity of the microwave signal that receives by more different receiving antennas size, position in conjunction with different receiving antennas positions OBU, the method easily is subject to the impact of signal reflex and multipath fading, the field strength fluctuation of the microwave signal that receives is changed greatly, easily cause the location mistake, so bearing accuracy is relatively low.
Summary of the invention
The application provides a kind of vehicle locating device and DSRC application system that improves bearing accuracy.
According to the application's first aspect, the application provides a kind of vehicle locating device, comprising:
Positioning antenna comprises at least three receiving antennas of arranging at same straight line, and described receiving antenna is used for receiving the microwave signal that same OBU sends;
Signal receiver is connected with described receiving antenna, is used for receiving input digit processor after the described microwave signal;
The digitized processing device is connected with described signal receiver, is used for described microwave signal is carried out digitized processing;
Digital beam former is connected with described digitized processing device, and the signal after the described digitized processing is weighted forms beam signal after summation is processed, and the corresponding position angle of the beam signal of definite maximum signal to noise ratio.
Among a kind of embodiment, also comprise the calibration of amplitude and phase device that is connected with described signal receiver.
Among a kind of embodiment, also comprise the beam-controller that is connected with described digital beam former.
Among a kind of embodiment, the spacing between the displaced phase center of adjacent two receiving antennas equates.
Among a kind of embodiment, the spacing between the displaced phase center of adjacent two receiving antennas is half of wavelength of described microwave signal.
Among a kind of embodiment, also comprise the dual-mode antenna, modulator/demodulator, coder/decoder and the core processor that connect successively, described digital beam former is connected with described core processor.
Among a kind of embodiment, described positioning antenna has two groups, and the arragement direction of receiving antenna is mutually vertical in two groups of described positioning antennas.
According to the application's second aspect, the application provides a kind of DSRC application system, comprises above-described locating device.
Among a kind of embodiment, described DSRC application system is bicycle road band barrier machine electronic charging system without parking, bicycle road Free-flow system or multilane Free-flow system, described positioning antenna is arranged on the corresponding track of described bicycle road band barrier machine electronics ETC system or bicycle road Free-flow system, or is arranged at least one Free-flow section in the multilane Free-flow system.。
The application's beneficial effect is: the OBU that the application installs the vehicle on the road based on beam forming technique accurately locates, can access the corresponding position angle of wave beam of shaping, this position angle is the corresponding position angle of microwave signal that OBU sends, and can calculate the positional information of OBU according to this position angle.The application's localization method is not vulnerable to the impact of signal reflex and multipath fading, precision is higher, be conducive to RSU and judge accurately whether the OBU that sends microwave signal is in the zone, track of this RSU antenna cover, if in the zone, track of this RSU antenna cover RSU communicate by letter with it, otherwise not with it communication, can effectively solve monkey chatter and follow the car interference problem, avoid the ETC system mistake of deducting fees, guarantee its normal operation, perhaps for other kinds DSRC application system provides locating information, guarantee that it carries out accurately Real Time Monitoring or management to vehicle.
Description of drawings
Fig. 1 is the schematic layout pattern of positioning antenna among the RSU of a kind of embodiment of the application;
Fig. 2 is the positioning device structure block diagram of a kind of embodiment of the application;
Fig. 3 is the RSU structured flowchart of a kind of embodiment of the application;
Fig. 4 is the vehicle positioning method process flow diagram of a kind of embodiment of the application;
Fig. 5 is the RSU of a kind of embodiment of the application and the process flow diagram that OBU carries out information interaction.
Embodiment
By reference to the accompanying drawings the present invention is described in further detail below by embodiment.
In the embodiment of the present application, utilize a plurality of receiving antennas to receive the microwave signal that same OBU sends, after these microwave signals are carried out A/D conversion, transfer to digital beam former and carry out beam forming, obtain at last the corresponding position angle of wave beam of shaping by the airspace filter technology, thereby determine the positional information of OBU.
Embodiment one:
The application's vehicle positioning method is based on the information interaction between RSU and the OBU.Wherein, RSU comprises outdoor unit and indoor unit, the RSU outdoor unit has dual-mode antenna, for sending microwave signal and reception to OBU from the microwave signal of OBU, the RSU outdoor unit is installed in road top or road sidepiece usually, and the RSU indoor unit is used for the RSU outdoor unit is controlled and the information that the RSU outdoor unit receives and sends is processed; OBU also has antenna, and also reception is from the microwave signal of RSU to be used for sending microwave signal to RSU, and OBU is installed in the vehicle usually, for example is fixed on the front windshield of vehicle.
Please refer to Fig. 1 or Fig. 2, the present embodiment discloses a kind of vehicle locating device, and this vehicle locating device is arranged among the RSU of ETC system, mainly comprises:
Positioning antenna, this positioning antenna is arranged in the RSU outdoor unit, form aerial array by at least three receiving antennas 11 of arranging at same straight line, each receiving antenna 11 is used for receiving the microwave signal that same OBU sends, a receiving antenna 11 is as an array element, for example in the present embodiment, receiving antenna 11 has N (N is the natural number greater than 3), in order to improve the accuracy of location, the spacing d that can arrange between the displaced phase center of adjacent two receiving antennas 11 equates, this spacing d preferably gets half of wavelength X of the microwave signal that OBU sends.Consider the size of computing velocity, complexity and beam pattern, and a kind of embodiment of the volume of outdoor unit size can be set to 8 with receiving antenna 11.Those skilled in the art can understand, receiving antenna 11 is arranged in the displaced phase center that refers to these receiving antennas 11 on the same straight line and is located along the same line, receive the width of cloth of path for fear of the signal of each receiving antenna 11 correspondence mutually inconsistent and measuring accuracy is exerted an influence, select identical receiving antenna as far as possible, for example all select the Circular polarization horn antenna, owing to having adopted the higher electromagnetic horn of gain (generally gaining greater than 12dBi) as receiving antenna 11, so its directivity is stronger, undesired signal there is good inhibition, can reaches the bearing accuracy higher than common antenna.In the present embodiment, the microwave signal that is used for the location that OBU sends can be itself and any one microwave signal of OBU communication process.
The digitized processing device, comprise A/D unit 13, be connected with signal receiver 12, be used for the microwave signal of signal receiver 12 outputs is carried out the digitized signal that obtains after the A/D conversion, after carrying out again the frequency-conversion processing and digital filtering of digitized signal, obtain I, the Q two paths of signals of quadrature, at last with its input digit beam-shaper 14.
Digital beam former (DBF) 14, be connected with digitized processing device signal, be used for the signal after the digitized processing is carried out signal stack and beam forming, and by the definite corresponding position angle of wave beam that is shaped of airspace filter, this position angle is the position angle of the microwave signal of OBU transmission, the in other words angle between microwave signal and the aerial array normal.Digital beam former 14 adopts field programmable gate array (FPGA:Field-Programmable Gate Array) and digital signal processing (DSP:Digital Signal Processing) technology, process coming the mathematical operation that walks abreast fast of each road array element signals, and the maximum signal-to-noise ratio algorithm principle of optimizing according to adaptive filter algorithm, each array element signals is weighted summation to be processed, form at last beam signal, determine at last to have the corresponding position angle of beam signal of maximum signal to noise ratio, namely from the microwave signal of OBU and the angle between the aerial array normal, after obtaining this angle, digital beam former (DBF) 14 is with the numerical value input core processor of this angle, so that the setting height(from bottom) of its combined with receiving antenna 11 and angle calculate OBU at the concrete coordinate of overlay area, RSU antenna vertical projection point the place ahead.
Particularly, as shown in Figure 1, in positioning antenna, suppose that the spacing between each receiving antenna 11 is d, the incident direction of microwave signal (namely and the angle between the antenna linear array normal) is θ, be the time reference antenna if establish label among Fig. 1 and be 1 receiving antenna 11, the wave path-difference that then arrives adjacent reception antenna 11 from the microwave signal of OBU is dsin θ, and the mistiming that arrives adjacent reception antenna 11 is:
The phase differential of the microwave signal that adjacent reception antenna 11 receives is:
λ is the centre wavelength of microwave signal institute respective frequencies.
The microwave signal of the antenna reception 11 of each numbering is respectively:
x
1(t)=s(t)e
jωt
The microwave signal that aerial array receives is write as matrix form and is:
Wherein,
α(θ) be the direction vector of microwave signal, numerical value only depends on the geometry (known) of aerial array and the direction of propagation (the unknown) of microwave signal.
After N microwave signal that receives be weighted summation, the signal after the shaping of output was:
y(t)=
W H X(t)=s(t)
W H α(θ)
If P
W (θ)=
W H α(θ) be the directional diagram of signal weighting, when
W HTo certain direction
θ 0 The addition of signal homophase the time P that obtains
w (θ
0) the mould value maximum, can form maximum signal to noise ratio the microwave signal arrival bearing, for
x(t) in fact realized the Space domain sampling signal, therefore to calculating orientation angles corresponding to maximum signal to noise ratio beam signal, namely having determined by airspace filter
θ 0 , and this position angle is from the microwave signal of OBU and the angle between the aerial array normal.
Further, locating device also comprises the calibration of amplitude and phase device 15 that is connected with each signal receiver 12 in the positioning antenna, be used for according to system requirements, in the situation that 11 free time of receiving antenna, according to certain timing cycle each signal is received path and carry out calibration of amplitude and phase, avoid the situation of its signal width of cloth phase inconsistency that in the situations such as ageing equipment, operating ambient temperature variation, occurs.
Locating device also comprises beam-controller 16, is connected with digital beam former 15, and being used for provides best weight vectors control signal according to default constraint condition control figure beam-shaper 15 to it.
Above signal receiver, digitized processing device and digital beam former 14 all are arranged in the RSU indoor unit.In the present embodiment, a RSU outdoor unit is installed in each ETC track, it is installed on the portal frame of center, top, track, a plurality of receiving antennas 11 of arranging at same straight line in the positioning antenna are parallel with ground, track, the antenna radiation pattern center is over against direction to the car, to cover a lane width as good.
As shown in Figure 3, generally, the locating device of above embodiment forms the positioned channel of RSU, RSU also comprises the signal transmitting and receiving path, comprise the dual-mode antenna 21, modulator/demodulator 22, coder/decoder 24 and the core processor 25 that connect successively, the digital beam former 14 in the locating device also is connected with core processor 25.
Wherein, dual-mode antenna 21 is used for launching the descending microwave signal of RSU to OBU and replys the microwave signal of returning with reception OBU, and it is connected with signal receiver 22, according to the different antenna structure of different concrete selection of overlay area.Positioning antenna is identical with the directional diagram sensing of dual-mode antenna 21, can reduce the interference of OBU or other signal of lie, guarantees that the microwave signal of dual-mode antenna 21 receptions is consistent with the OBU signal that positioning antenna receives
Signal receiver 22 is used for amplifying from the descending microwave signal of the RSU of modulator/demodulator 23 and export, and after receiving OBU and replying the microwave signal of returning, converts thereof into intermediate-freuqncy signal, and amplify with filtering after input modulator/demodulator 23.
Modulator/demodulator 23 sends to signal receiver 22 after being used for the descending microwave signal of RSU modulated, and OBU is replied the microwave signal of returning carry out input coding/demoder 24 after the demodulation.
Coder/decoder 24 is used for the descending microwave signal of RSU is carried out sending to modulator/demodulator 23 behind the FM0 coding, and OBU is replied the microwave signal of returning carry out inputting core processor 25 after the FM0 decoding.
Core processor 25 is the primary processor of whole RSU, be used for control RSU whole courses of work, carry out data interaction, management ETC applied logic process with the track computing machine.Core processor 25 also is connected with digital beam former 14, beam-controller 16, calibration of amplitude and phase device 15 signals, can receive the position angle of the microwave signal that digital beam former 14 determines, and calculate the positional information of OBU according to this position angle, can also control the operation of beam-controller 16, and send instruction in free time of receiving antenna 11 to the calibration of amplitude and phase device and each signal is received path carry out calibration of amplitude and phase, by reducing the amplitude phase error between each signal reception path, improve as much as possible bearing accuracy.
Embodiment two:
Different from the first embodiment is, the locating device of the first embodiment has one group of positioning antenna, be used for to carry out from the microwave signal of OBU one-dimensional square to the location, for example use one group of positioning antenna along road bearing of trend (vertically), obtain behind the angle between microwave signal and the aerial array normal its angle of pitch as OBU by embodiment one, thereby calculate OBU at the lengthwise position coordinate of overlay area, RSU antenna vertical projection point the place ahead.And the positioning antenna of the present embodiment has two groups, and the arragement direction of receiving antenna is mutually vertical in two groups of positioning antennas, except obtaining the lengthwise position coordinate of OBU, also can use along one group of positioning antenna perpendicular to road bearing of trend (laterally), adopt the locator meams identical with embodiment one to obtain behind the angle between microwave signal and the aerial array normal its pitch angle as OBU, thereby calculate OBU at the lateral attitude coordinate of the OBU of overlay area, RSU antenna vertical projection point the place ahead, thereby realized the two-dimensional localization of vehicle.
Embodiment three:
Please refer to Fig. 4, the present embodiment discloses a kind of vehicle positioning method, may further comprise the steps:
Step S100:RSU utilizes at least three receiving antennas of arranging at same straight line in the positioning antenna, receives the microwave signal that same OBU sends.
Step S101: utilize the digitized processing unit, the microwave signal that receives antenna reception is carried out digitized processing.
Step S102: utilize beam-shaper, be weighted according to the maximum signal-to-noise ratio algorithm principle of the adaptive filter algorithm optimization signal after to digitized processing and form beam signal after summation is processed, and the corresponding position angle of the beam signal of definite maximum signal to noise ratio, obtain the positional information of the microwave signal that described OBU sends.
Embodiment four:
Please refer to Fig. 3 and Fig. 5, the present embodiment discloses the process that a kind of RSU and OBU carry out information interaction, may further comprise the steps:
Step S200:OBU enters the aerial signal overlay area of RSU, receive the wake-up signal of RSU and be waken up, then receive the microwave signal of RSU, carry request data frame in this microwave signal, the particular content of this request data frame is decided as required, be generally used for asking OBU to return certain information to RSU, be used for request information of vehicles (comprise the information such as license plate number, vehicle model, vehicle color one or more) such as the request data frame of the present embodiment.
After step S201:OBU receives the microwave signal of RSU, it is resolved, then obtain the information of vehicles that RSU asks and be packaged into the reply data frame by internal calculation, then send microwave signal to RSU, this microwave signal comprises the information such as ID of reply data frame and OBU.This microwave signal is received by the positioning antenna in the RSU outdoor unit and dual-mode antenna simultaneously, positioning antenna receives treatment scheme such as the following steps S202-S205 after this microwave signal, dual-mode antenna receives treatment scheme such as the following steps S206-S209 after this microwave signal, enters step S210 after two treatment schemees finish.
Step S202: at least three receiving antennas 11 in the positioning antenna receive respectively the microwave signal that OBU sends simultaneously.
Step S203: the microwave signal that each signal receiver 12 receives from receiving antenna 11, and high-frequency signal converted to amplify with filtering after the intermediate-freuqncy signal process.
Step S204: the 13 pairs of microwave signals from signal receiver in digitized processing unit by using A/D unit are carried out the A/D conversion, then to again frequency conversion and filtering processing of the digital signal after the conversion.
Step S205: 14 pairs of each array element signals of digital beam former are weighted summation and process, form at last beam signal, determine at last to have the corresponding position angle of beam signal of maximum signal to noise ratio, this position angle is namely from the microwave signal of OBU and the angle between the aerial array normal, and after this angle numerical value obtained this angle, the setting height(from bottom) of combined with receiving antenna and angle can calculate OBU in the concrete coordinate of overlay area, the RSU antenna vertical projection point the place ahead locating information as OBU
Step S206: dual-mode antenna 21 receives the microwave signal of OBU.
Step S207: signal receiver 22 receives the microwave signal from dual-mode antenna 21, and converts to amplify with filtering after the intermediate-freuqncy signal to microwave signal and with high-frequency signal and process.
Step S208: 23 pairs of microwave signals from signal receiver of modulation/demodulation unit are carried out demodulation.
Step S209: the 24 pairs of signals from modulation/demodulation unit in coding/decoding unit are decoded, thereby obtain the specifying information that the reply data frame comprises.
Step S210: core processor 25 information that 24 decodings obtain according to coding/decoding unit in the signal transmitting and receiving path is judged the validity of microwave signal, if microwave signal is effective, the locating information of the OBU that then obtains according to positioned channel judges that OBU is whether in the aerial signal overlay area of this RSU, if, then continuation is communicated by letter with OBU and is finished ETC logical transaction process, it is deducted fees, if judge that OBU not in the aerial signal overlay area of this RSU, does not then communicate with it.
Step S211: deduct fees finish after, RSU can wait for that also the track computing machine sends search OBU instruction or again sends wake-up signal and the microwave signal of carrying request data frame to OBU, if in the timing of agreement, do not receive the microwave signal of carrying the reply data frame of OBU, then to the instruction of calibration of amplitude and phase device transmitted signal calibration of amplitude and phase.
The vehicle locating device of the above embodiment of the application can be widely used in all kinds of DSRC system, such as bicycle road band barrier machine ETC system, bicycle road Free-flow system, multilane Free-flow system and the various types of vehicles supervisory systems such as vehicle speed measuring system, model recognition system, image identification system, video capture system that are used for vehicle is carried out Real Time Monitoring or in violation of rules and regulations inspection.Wherein, positioning antenna is arranged on the corresponding track of bicycle road band barrier machine electronics ETC system or bicycle road Free-flow system, or be arranged at least one Free-flow section in the multilane Free-flow system, can by to the accurate positioning confirmation vehicle of vehicle whether in the antenna coverage areas of this RSU, thereby effectively avoid with phenomenons such as car interference, lie interference.The application's OBU localization method accurately, less to the transformation of current RSU equipment, especially in the MLFF system, RSU can accurately locate the vehicle that has free passage at multilane, reduces the mistake of deducting fees, that guarantees to charge normally carries out.
It will be appreciated by those skilled in the art that, the all or part of step of the whole bag of tricks can come the instruction related hardware to finish by program in the above-mentioned embodiment, this program can be stored in the computer-readable recording medium, and storage medium can comprise: ROM (read-only memory), random access memory, disk or CD etc.
Above content is in conjunction with concrete embodiment further description made for the present invention, can not assert that implementation of the present invention is confined to these explanations.For the general technical staff of the technical field of the invention, without departing from the inventive concept of the premise, can also make some simple deduction or replace.
Claims (9)
1. a vehicle locating device is characterized in that, comprising:
Positioning antenna comprises at least three receiving antennas of arranging at same straight line, and described receiving antenna is used for receiving the microwave signal that same board units sends;
Signal receiver is connected with described receiving antenna, is used for receiving input digit processor after the described microwave signal;
The digitized processing device is connected with described signal receiver, is used for described microwave signal is carried out digitized processing;
Digital beam former is connected with described digitized processing device, and the signal after the described digitized processing is weighted forms beam signal after summation is processed, and the corresponding position angle of the beam signal of definite maximum signal to noise ratio.
2. device as claimed in claim 1 is characterized in that, the spacing between the displaced phase center of adjacent two receiving antennas equates.
3. device as claimed in claim 2 is characterized in that, the spacing between the displaced phase center of adjacent two receiving antennas is half of wavelength of described microwave signal.
4. device as claimed in claim 1 is characterized in that, also comprises the calibration of amplitude and phase device that is connected with described signal receiver.
5. device as claimed in claim 1 is characterized in that, also comprises the beam-controller that is connected with described digital beam former.
6. device as claimed in claim 1 is characterized in that, also comprises the dual-mode antenna, modulator/demodulator, coder/decoder and the core processor that connect successively, and described digital beam former is connected with described core processor.
7. such as each described device in the claim 1 to 6, it is characterized in that, described positioning antenna has two groups, and the arragement direction of receiving antenna is mutually vertical in two groups of described positioning antennas.
8. a Dedicated Short Range Communications, application system is characterized in that, comprises vehicle locating device claimed in claim 7.
9. system as claimed in claim 8, it is characterized in that, described Dedicated Short Range Communications, application system is list, multilane band barrier machine electronic charging system without parking, bicycle road Free-flow system or multilane Free-flow system, described positioning antenna is arranged on the corresponding track of described bicycle road band barrier machine electronic charging system without parking or bicycle road Free-flow system, or is arranged at least one Free-flow section in the multilane Free-flow system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220284342 CN202748846U (en) | 2012-06-15 | 2012-06-15 | DSRC (Dedicated Short Range Communication)-based vehicle positioning device and DSRC application system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220284342 CN202748846U (en) | 2012-06-15 | 2012-06-15 | DSRC (Dedicated Short Range Communication)-based vehicle positioning device and DSRC application system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202748846U true CN202748846U (en) | 2013-02-20 |
Family
ID=47708209
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220284342 Expired - Lifetime CN202748846U (en) | 2012-06-15 | 2012-06-15 | DSRC (Dedicated Short Range Communication)-based vehicle positioning device and DSRC application system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202748846U (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102760310A (en) * | 2012-06-15 | 2012-10-31 | 深圳市金溢科技有限公司 | DSRC (dedicated short range communication)-based vehicle positioning device, method and DSRC application system |
| CN105631953A (en) * | 2014-10-29 | 2016-06-01 | 航天信息股份有限公司 | On-vehicle electronic label identification positioning device and on-vehicle electronic label identification positioning method for ETC system |
| CN105897351A (en) * | 2014-12-15 | 2016-08-24 | 中国空间技术研究院 | Uplink and downlink wave beam shaping measure system and method |
| CN106356629A (en) * | 2016-09-26 | 2017-01-25 | 深圳市金溢科技股份有限公司 | Compensation method of antenna orientation angles and antenna device |
| CN108028797A (en) * | 2015-09-23 | 2018-05-11 | 英特尔Ip公司 | For high-precision distance and the apparatus and method of orientation measurement |
| CN111212401A (en) * | 2019-12-26 | 2020-05-29 | 天地融科技股份有限公司 | OBU positioning method and device |
| CN111504311A (en) * | 2020-05-15 | 2020-08-07 | 杭州鸿泉物联网技术股份有限公司 | Multi-sensor fusion real-time positioning navigation device and method |
| CN112037345A (en) * | 2020-07-21 | 2020-12-04 | 深圳成谷智能科技有限公司 | Method and device for preventing ETC portal system from mischarging and electronic equipment |
| US11293758B2 (en) | 2019-05-22 | 2022-04-05 | Ford Global Technologies, Llc | Systems and methods for increasing the accuracy of vehicle positioning |
-
2012
- 2012-06-15 CN CN 201220284342 patent/CN202748846U/en not_active Expired - Lifetime
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102760310A (en) * | 2012-06-15 | 2012-10-31 | 深圳市金溢科技有限公司 | DSRC (dedicated short range communication)-based vehicle positioning device, method and DSRC application system |
| CN102760310B (en) * | 2012-06-15 | 2015-05-27 | 深圳市金溢科技股份有限公司 | DSRC (dedicated short range communication)-based vehicle positioning device, method and DSRC application system |
| CN105631953A (en) * | 2014-10-29 | 2016-06-01 | 航天信息股份有限公司 | On-vehicle electronic label identification positioning device and on-vehicle electronic label identification positioning method for ETC system |
| CN105897351A (en) * | 2014-12-15 | 2016-08-24 | 中国空间技术研究院 | Uplink and downlink wave beam shaping measure system and method |
| CN108028797B (en) * | 2015-09-23 | 2021-12-14 | 英特尔公司 | Apparatus, system, method, and medium for high precision distance and orientation measurement |
| CN108028797A (en) * | 2015-09-23 | 2018-05-11 | 英特尔Ip公司 | For high-precision distance and the apparatus and method of orientation measurement |
| CN106356629B (en) * | 2016-09-26 | 2019-08-16 | 深圳市金溢科技股份有限公司 | A kind of compensation method of antenna orientation angle and antenna assembly |
| CN106356629A (en) * | 2016-09-26 | 2017-01-25 | 深圳市金溢科技股份有限公司 | Compensation method of antenna orientation angles and antenna device |
| US11293758B2 (en) | 2019-05-22 | 2022-04-05 | Ford Global Technologies, Llc | Systems and methods for increasing the accuracy of vehicle positioning |
| CN111212401A (en) * | 2019-12-26 | 2020-05-29 | 天地融科技股份有限公司 | OBU positioning method and device |
| CN111212401B (en) * | 2019-12-26 | 2023-06-13 | 天地融科技股份有限公司 | OBU positioning method and device |
| CN111504311A (en) * | 2020-05-15 | 2020-08-07 | 杭州鸿泉物联网技术股份有限公司 | Multi-sensor fusion real-time positioning navigation device and method |
| CN112037345A (en) * | 2020-07-21 | 2020-12-04 | 深圳成谷智能科技有限公司 | Method and device for preventing ETC portal system from mischarging and electronic equipment |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102760310B (en) | DSRC (dedicated short range communication)-based vehicle positioning device, method and DSRC application system | |
| CN202748846U (en) | DSRC (Dedicated Short Range Communication)-based vehicle positioning device and DSRC application system | |
| CN102831657B (en) | ETC communication control method, multiple-beam antenna, RSU and ETC system | |
| CN103268639B (en) | Based on the jamming-proof method in electric non-stop toll ETC track of multiple-beam antenna | |
| CN103514638B (en) | A kind of positioner based on DSRC technology, RSU and application system | |
| CN102592323B (en) | OBU (On Board Unit) positioning method, positioning device and system based on DBF (Digital Beam Forming) | |
| CN102097013B (en) | Positioning device and method for on-board unit in ETC system | |
| CN103514636B (en) | Positioning antenna, positioning antenna module, roadside unit and DSRC application systems | |
| JP4142421B2 (en) | How to identify transfers during contactless data transmission | |
| CN102176009A (en) | Microwave distance measurement-based antenna positioning method and device | |
| KR101398644B1 (en) | Rf tag reader for accurate position determination | |
| CN103901399B (en) | A kind of method and system utilizing passive multiple-beam antenna to position | |
| NZ248206A (en) | Vehicle transponder location and tracking using phased array antenna | |
| CN103513228A (en) | Positioning method based on DSRC technology | |
| CN107101638A (en) | Positioner, method and the drive test unit of vehicle carried electronic label | |
| CN113508312A (en) | Communication method and device | |
| US20140009311A1 (en) | Method for detecting a wheel of a vehicle | |
| CN202870911U (en) | Multi-beam antenna based on ETC, RSU and ETC system | |
| CN107507285B (en) | Vehicle detection method and vehicle detection device of ETC system | |
| CN110596639A (en) | Vehicle tracking and positioning method, information marking method, system and control terminal | |
| CN103699870A (en) | Ultrahigh radio frequency identifying-based car lane judging method and device | |
| CN104867196B (en) | A kind of method, signal processing apparatus and the roadside unit that prevent label signal from colliding | |
| CN112986945A (en) | Radar target identification method, device, equipment and storage medium | |
| CN109448145B (en) | Road side unit system for reducing ETC lane construction cost | |
| CN202975316U (en) | Device carrying out positioning by using passive multi-beam antenna |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: SHENZHEN GENVICT TECHNOLOGY CO., LTD. Free format text: FORMER NAME: SHENZHEN JINYI TECHNOLOGIES CO., LTD. |
|
| CP01 | Change in the name or title of a patent holder |
Address after: Nanshan District Keyuan Road Shenzhen city Guangdong province 518057 Tsinghua building A building 12 layer Patentee after: SHENZHEN GENVICT TECHNOLOGY CO., LTD. Address before: Nanshan District Keyuan Road Shenzhen city Guangdong province 518057 Tsinghua building A building 12 layer Patentee before: Shenzhen Jinyi Technologies Co., Ltd. |
|
| CX01 | Expiry of patent term |
Granted publication date: 20130220 |
|
| CX01 | Expiry of patent term |