CN206077388U - A kind of control device of OBU microstrip antennas - Google Patents
A kind of control device of OBU microstrip antennas Download PDFInfo
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- CN206077388U CN206077388U CN201621165142.4U CN201621165142U CN206077388U CN 206077388 U CN206077388 U CN 206077388U CN 201621165142 U CN201621165142 U CN 201621165142U CN 206077388 U CN206077388 U CN 206077388U
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- antenna
- obu
- microstrip antenna
- microstrip
- radio
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Abstract
This utility model provides a kind of control device of OBU microstrip antennas, is integrated in inside OBU, including the first microstrip antenna, the second microstrip antenna, antenna control unit.The first described microstrip antenna and the second microstrip antenna are beam antenna.The first described microstrip antenna and the second microstrip antenna are not at same level, radiate different directions.Described antenna control unit includes radio-frequency (RF) switch, signals collecting chip, radio communication chip and main control chip.Using the technical solution of the utility model, the communication zone of OBU can be adjusted flexibly by automatic switchover antenna, the directivity of OBU is reached most preferably, improve the environmental suitability and communication stability of OBU.
Description
Technical field
The present invention relates to ETC technical fields, are concretely a kind of control devices of OBU microstrip antennas.
Background technology
OBU (On Board Unit) board units in ETC system, are generally mounted at the front windshield of automobile, when
When ETC tracks, the roadside unit RSU (Road Side Unit) on OBU and ETC tracks carries out special short distance and leads to automobile
Letter, clearance of being argued for the sake of arguing after completing to deduct fees automatically.In actual application, OBU had been needed before being installed to and being missed the stop on automobile
Into a series of tests of dispatching from the factory, once issue, secondary offering, the operation such as activation is in this process and logical using special short distance
Letter technology, but the equipment for carrying out information exchange with OBU is not the roadside unit RSU on ETC tracks, but test device, handss
Hold the equipment such as distribution device, desk-top distribution device.
According to existing technology, OBU only has a microstrip antenna, and its communication zone and directivity just can not after dispatching from the factory
It is changed, can so brings the road of a problem, the communication zone of the microstrip antenna of OBU and direction usually and on ETC tracks
Side unit RSU antennas carry out matched design, but with hand-held distribution device, desk-top distribution device or freely flow the ETC in track
Antenna but can not be matched well, cause the situation generation of the failure repeatedly in distribution and activation process.Also one problem
It is different automobiles, the angle of inclination of front windshield is different, the particularly vehicle such as minibus and motor buses, and general
Car difference is larger, and the microstrip antenna of OBU is also to be designed for car, when being installed to minibus or bus
During this vehicle of car, as glass angle of inclination is different, the communication zone and directivity of microstrip antenna can all bring change, cause
When missing the stop, communication efficiency is not good, so as to cause Fail Transaction.
Utility model content
In order to solve OBU in different application scene and the adaptability problem of different automobile types, the utility model proposes a kind of OBU
The control device of microstrip antenna, enables OBU automatic according to local environment when using in different application scene and different automobile types
Switching antenna reaches optimal direction and communication zone, improves transaction stability, strengthens Consumer's Experience.
This utility model provides a kind of control device of OBU microstrip antennas, is integrated in inside OBU, including the first micro-strip day
Line, the second microstrip antenna, antenna control unit.
Described antenna control unit include the first radio-frequency (RF) switch, the first radio communication chip, the second radio-frequency (RF) switch, second
Radio communication chip, signals collecting chip and main control chip；The first described microstrip antenna and the first radio-frequency (RF) switch are connected, institute
The second microstrip antenna and the second radio-frequency (RF) switch stated is connected.
The first described microstrip antenna and the second microstrip antenna are beam antenna.
The first described microstrip antenna and the second microstrip antenna are not at same level.
The first described radio-frequency (RF) switch is connected with signals collecting chip with the first microstrip antenna, the first radio communication chip
Connect, be responsible for the transmitting and reception of the first microstrip antenna of switching, or close the first microstrip antenna.
The second described radio-frequency (RF) switch is connected with signals collecting chip with the second microstrip antenna, the second radio communication chip
Connect, be responsible for the transmitting and reception of the second microstrip antenna of switching, or close the second microstrip antenna.
The first described radio communication chip and the first radio-frequency (RF) switch are connected with main control chip.
The second described radio communication chip and the second radio-frequency (RF) switch are connected with main control chip.
Described signals collecting chip and the first radio-frequency (RF) switch, the second radio-frequency (RF) switch are connected, by the first radio-frequency (RF) switch,
Second radio-frequency (RF) switch receives the first microstrip antenna, the microwave signal of the second microstrip antenna transmission, carries out signal and changes and send to
Main control chip process.
Described main control chip is the single-chip microcomputer or ARM chips for being internally integrated data storage and control function.Described master
Control chip and the first radio communication chip, the second radio communication chip, signals collecting chip are connected, on the one hand by control command
The first radio communication chip, the second radio communication chip are sent to, the data on the other hand receiving the transmission of signals collecting chip are entered
Row Treatment Analysis.
Using a kind of control device of OBU microstrip antennas provided by the utility model, OBU and roadside device or hand-held
When equipment is communicated, before link is set up, need first to carry out the judgement of signal intensity, it is suitable to select according to the power of signal
Microstrip antenna communicated.
The beneficial effects of the utility model are：Using the technical solution of the utility model, can by automatic switchover antenna
So that the communication zone of OBU is adjusted flexibly, reaches the directivity of OBU and most preferably improve the environmental suitability of OBU and communicate stable
Property.
Description of the drawings
In order to be illustrated more clearly that this utility model embodiment or technical scheme of the prior art, below will be to embodiment
Or accompanying drawing to be used is briefly described needed for description of the prior art, it should be apparent that, drawings in the following description are only
It is some embodiments of the present utility model, for those of ordinary skill in the art, before creative labor is not paid
Put, can be with according to these other accompanying drawings of accompanying drawings acquisition.
Fig. 1 is a kind of structural representation of the control device of OBU microstrip antennas described in the utility model.
Fig. 2 is a kind of a kind of embodiment schematic diagram of the control device of OBU microstrip antennas described in the utility model.
Fig. 3 is a kind of workflow diagram of the control device of described OBU microstrip antennas of the present utility model.
Fig. 4 is a kind of field when applying on ETC tracks of the control device of OBU microstrip antennas described in the utility model
Scape schematic diagram.
Fig. 5 is a kind of control device of OBU microstrip antennas described in the utility model when interacting with handheld device
Schematic diagram of a scenario.
Specific embodiment
Below in conjunction with the accompanying drawing in this utility model embodiment, the technical scheme in this utility model embodiment is carried out
Clearly and completely describe, it is clear that described embodiment is only this utility model a part of embodiment, rather than whole
Embodiment.Based on the embodiment in this utility model, those of ordinary skill in the art are not under the premise of creative work is made
The every other embodiment for being obtained, belongs to the scope of this utility model protection.
Below in conjunction with the accompanying drawings, the technical scheme in this utility model is described in further detail.
Refer to Fig. 1, a kind of control device of OBU microstrip antennas provided by the utility model, including the first micro-strip day
Line 101, the second microstrip antenna 102, antenna control unit 103；Antenna control unit 103 is penetrated by the first radio-frequency (RF) switch 301, second
Frequency switch 302, the first radio communication chip 303 and the second radio communication chip 304, signals collecting chip 305 and master control core
Piece 306 is constituted.
Fig. 2 is a kind of a kind of embodiment schematic diagram of the control device of OBU microstrip antennas described in the utility model, described
A kind of control device of OBU microstrip antennas be integrated in inside board units OBU100, belong to of board units OBU 100
Point., in same PCB substrate, the second microstrip antenna 102 passes through radio frequency for first microstrip antenna 101 and antenna control unit 103
Cable is connected with antenna control unit 103.Second microstrip antenna 102 and the first microstrip antenna 101 are not at same plane, Cheng Yi
Clamp angle；First microstrip antenna 101 and the second microstrip antenna 102 are beam antenna, and the direction for being radiated is different with region；Car
Carrier unit OBU100 using when be pasted on the front windshield of automobile, be represented by dashed line in Fig. 2 board units OBU100 peace
When being attached on the automobile region radiated by the first microstrip antenna 101 and the second microstrip antenna 102, actual region and direction need
Emulated according to antenna and tested and determined.
Fig. 3 is a kind of workflow diagram of the control device of OBU microstrip antennas described in the utility model.Dotted portion is
Set up the process of link.Under original state, the first microstrip antenna and the second microstrip antenna are in reception state, when receiving one
During frame BST, show that OBU, under GB DSRC communication environment, has such as entered into ETC tracks, had handheld device to operate etc..
The intensity of BST signals can be transferred to by main control chip by the signal conversion of signals collecting chip, main control chip is counted 5 times
It is compared after the intensity of BST signals, if the signal intensity of second microstrip antenna of signal intensity ratio of the first microstrip antenna is strong,
The second microstrip antenna is then closed, and VST is sent using the first microstrip antenna and is replied frame；, whereas if the signal of the second microstrip antenna
The signal intensity of the first microstrip antenna of strength ratio is strong, then close the first microstrip antenna, sends VST using the second microstrip antenna and replys
Frame.The foundation that communication link is represented after VST replys frame is sent, follow-up communication is just using the microstrip antenna being not turned off as logical
The microstrip antenna of letter is transmitted and receives, until flow process terminates.If OBU time-out does not receive frame signal in flow process is carried out
Cause flow process to be interrupted, then return to original state, reopen double antenna and received and judged.
Fig. 4 is scene graph of automobile when ETC tracks, and when automobile sails ETC tracks into, OBU receives roadside device and sends out
The microwave signal for going out, now, the microwave signal that the first microstrip antenna 101 receives roadside device is stronger, the work according to Fig. 3
Flow process, the second microstrip antenna 102 will be closed, and the first microstrip antenna 101 will be communicated with roadside device as communication antenna, complete
Into transaction flow.
Fig. 5 is the scene graph operated to OBU using handheld device, and now the second microstrip antenna 102 receives hand-held setting
Standby microwave signal is stronger, the workflow according to Fig. 3, and the first microstrip antenna 101 will be closed, the second microstrip antenna 102
To be communicated with handheld device as communication antenna, be completed follow-up process.
Operation scenario described in Fig. 4 and Fig. 5 be OBU work typical scene, undeniable to be, practical work process
In, OBU is also possible in communication scenes complicated and changeable, now, and the control device of OBU microstrip antennas will be micro- according to first
The flexible switching communication antenna of power with antenna and the received microwave signal of the second microstrip antenna, it is ensured that the stability of communication.
It will be understood by those skilled in the art that method and system of the present invention is not limited to institute in specific embodiment
The embodiment stated, specific descriptions above are intended merely to the explanation purpose of the present invention, are not intended to limit the present invention.This area skill
Art personnel's technology according to the present invention scheme draws other embodiments, also belongs to the technological innovation scope of the present invention, this
The protection domain of invention is limited by claim and its equivalent.
Claims (4)
1. a kind of control device of OBU microstrip antennas, it is characterised in that including the first microstrip antenna, the second microstrip antenna, antenna
Control unit；Described antenna control unit include the first radio-frequency (RF) switch, the first radio communication chip, the second radio-frequency (RF) switch,
Two radio communication chips, signals collecting chip and main control chip；The first described microstrip antenna and the first radio-frequency (RF) switch are connected,
The second described microstrip antenna and the second radio-frequency (RF) switch are connected.
2. a kind of control device of OBU microstrip antennas according to claim 1, it is characterised in that the first described micro-strip
Antenna and the second microstrip antenna are beam antenna.
3. a kind of control device of OBU microstrip antennas according to claim 1, it is characterised in that the first described micro-strip
Antenna and the second microstrip antenna are not at same level.
4. a kind of control device of OBU microstrip antennas according to claim 1, it is characterised in that the first described radio frequency
Switch is connected with signals collecting chip with the first microstrip antenna, the first radio communication chip；Described the second radio-frequency (RF) switch and
Second microstrip antenna, the second radio communication chip are connected with signals collecting chip；The first described radio communication chip and
One radio-frequency (RF) switch is connected with main control chip；The second described radio communication chip and the second radio-frequency (RF) switch are connected with main control chip
Connect；Described signals collecting chip and the first radio-frequency (RF) switch, the second radio-frequency (RF) switch are connected with main control chip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621165142.4U CN206077388U (en) | 2016-10-25 | 2016-10-25 | A kind of control device of OBU microstrip antennas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621165142.4U CN206077388U (en) | 2016-10-25 | 2016-10-25 | A kind of control device of OBU microstrip antennas |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206077388U true CN206077388U (en) | 2017-04-05 |
Family
ID=58443043
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621165142.4U Active CN206077388U (en) | 2016-10-25 | 2016-10-25 | A kind of control device of OBU microstrip antennas |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206077388U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111145370A (en) * | 2019-12-31 | 2020-05-12 | 北京握奇数据股份有限公司 | Antenna system of vehicle-mounted electronic tag |
| CN111152729A (en) * | 2019-12-27 | 2020-05-15 | 北京万集科技股份有限公司 | Emission angle adjusting method and system, storage medium and electronic device |
-
2016
- 2016-10-25 CN CN201621165142.4U patent/CN206077388U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111152729A (en) * | 2019-12-27 | 2020-05-15 | 北京万集科技股份有限公司 | Emission angle adjusting method and system, storage medium and electronic device |
| CN111152729B (en) * | 2019-12-27 | 2021-07-13 | 北京万集科技股份有限公司 | Emission angle adjusting method and system, storage medium and electronic device |
| CN111145370A (en) * | 2019-12-31 | 2020-05-12 | 北京握奇数据股份有限公司 | Antenna system of vehicle-mounted electronic tag |
| CN111145370B (en) * | 2019-12-31 | 2021-09-07 | 北京握奇数据股份有限公司 | Antenna system of vehicle-mounted electronic tag |
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