CN204375980U - A kind of desktop issuing equipment - Google Patents
A kind of desktop issuing equipment Download PDFInfo
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- CN204375980U CN204375980U CN201520100478.1U CN201520100478U CN204375980U CN 204375980 U CN204375980 U CN 204375980U CN 201520100478 U CN201520100478 U CN 201520100478U CN 204375980 U CN204375980 U CN 204375980U
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Abstract
A kind of desktop issuing equipment, comprises housing, reconfigurable antenna array, switching circuit, aerial array processor and telecommunication circuit.The one side of housing is for placing the distribution panel treating issuing equipment; Reconfigurable antenna array arrangement, in housing, comprises multiple antenna element; First signal end of switching circuit is connected with reconfigurable antenna array; Aerial array processor is connected with the control end of switching circuit; Telecommunication circuit is connected with the secondary signal end of switching circuit, and telecommunication circuit is also connected with aerial array processor.Switching circuit and aerial array processor is increased in desktop issuing equipment, in communication process, make aerial array processor can according to the work of the control signal control switch circuit of telecommunication circuit, thus change the mode of operation of reconfigurable antenna array, to meet the current communication requirement treating issuing equipment, to solve the problem of waiting issue equipment compatibility difference of desktop issuing equipment to different model.
Description
Technical field
The application relates to reconfigurable antenna array technique field, is specifically related to a kind of desktop issuing equipment.
Background technology
According to national standard, 5.8GHz DSRC (Dedicated Short Range Communications, Dedicated Short Range Communications, technology) the desktop issuing equipment antenna communication distance range that uses be 1 ~ 20 centimetre, the reactive near field of this region overlay antenna and radiating near field.In this region, magnetic distribution region is irregular, adds reflection and the near-field coupling of target of issue, makes electromagnetic environment more complicated.
With to board units (On board Unit, OBU) the desktop issuing equipment carrying out issuing is example, in actual use, the OBU product of different vendor, it wakes sensitivity, antenna pattern, antenna gain, dynamic range up, waits indicator difference very large, signal distributions and the reflection of adding various OBU are incomplete same, the OBU product of desktop issuing equipment to various model is difficult to accomplish complete compatibility, causes communication link reliability to reduce, and distribution success rate is not high.
Summary of the invention
The application provides a kind of desktop issuing equipment, solves the problem of waiting issue equipment compatibility difference of signal coverage areas to different model of desktop issuing equipment.
A kind of desktop issuing equipment that the application provides, comprising:
Housing, the one side of described housing is for placing the distribution panel treating issuing equipment;
Reconfigurable antenna array, described reconfigurable antenna array arrangement, in housing, comprises multiple antenna element;
Switching circuit, its first signal end is connected with reconfigurable antenna array;
Aerial array processor, described aerial array processor is connected with the control end of switching circuit, for controlling described switching circuit work;
Telecommunication circuit, described telecommunication circuit is connected with the secondary signal end of switching circuit, for obtaining the signal of reconfigurable antenna array received and controlling reconfigurable antenna array emitter signal; Telecommunication circuit is also connected with aerial array processor, for aerial array processor pipage control signal.
In certain embodiments, the antenna element of described reconfigurable antenna array is near field antenna.
In certain embodiments, described reconfigurable antenna array comprises multiple electrically large sizes monopole antenna and multiple electrically large sizes PIFA antenna.
In certain embodiments, the quantity of described monopole antenna and PIFA antenna is equal.
In certain embodiments, described monopole antenna and PIFA antenna respectively have 2, are divided into two arrangements and put, and often arrange and comprise a monopole antenna and a PIFA antenna.
In certain embodiments, described switching circuit comprises multiple with antenna element switch element one to one.
In certain embodiments, described switch element is radio-frequency (RF) switch.
In certain embodiments, described telecommunication circuit comprises radio-frequency (RF) transmit-receive circuit, modulation/demodulation circuit, coding/decoding circuit, is respectively used to carry out the transmitting-receiving of radiofrequency signal, carries out modulating/demodulating, coding/decoding to signal.
In certain embodiments, described radio-frequency (RF) transmit-receive circuit, modulation/demodulation circuit, coding/decoding circuit are realized by FPGA.
In certain embodiments, described desktop issuing equipment is board units issuing equipment.
A kind of desktop issuing equipment that the application provides, switching circuit and aerial array processor is increased in desktop issuing equipment, in communication process, make aerial array processor can according to the work of the control signal control switch circuit of telecommunication circuit, thus change the mode of operation of reconfigurable antenna array, to meet the current communication requirement treating issuing equipment, to solve the problem of waiting issue equipment compatibility difference of desktop issuing equipment to different model.
Accompanying drawing explanation
Fig. 1 is the structural representation of desktop issuing equipment in a kind of embodiment of the application;
Fig. 2 is the OBU of a kind of embodiment of the application desktop issuing equipment to a kind of model when issuing, the Signal reception situation schematic diagram of reconfigurable antenna;
Fig. 3 is the OBU of a kind of embodiment of the application desktop issuing equipment to another kind of model when issuing, the Signal reception situation schematic diagram of reconfigurable antenna;
Fig. 4 is the OBU of a kind of embodiment of the application desktop issuing equipment to another kind of model when issuing, the Signal reception situation schematic diagram of reconfigurable antenna.
Embodiment
Reconfigurable antenna technology belongs to novel electronic technology, in communication process, dynamically changes communication zone, signal strength signal intensity and antenna pattern.Reconfigurable antenna is divided into mechanical reconfigurable antenna and electricity to adjust reconfigurable antenna two kinds.
In engineering, the antenna of communication distance in 10 electromagnetic wavelengths all will according to the method design of near field antenna, and desktop issuing equipment adopts near field antenna mostly.The design of far field antenna is generally followed: the iterative process of design-emulation-test-optimization.Near field antenna is different from far field antenna, and the emulation technology of near field antenna is due to the restriction of applications distances, and simulation result and measured result fall far short, so the design of near field antenna is general all based on experience and test, the reference value of simulation software is lower.
For solving the problem of waiting issue equipment compatibility difference of signal coverage areas to different model of desktop issuing equipment, the embodiment of the present application provides a kind of desktop issuing equipment.The inventive concept of the application is: in desktop issuing equipment, increase switching circuit and aerial array processor, in communication process, make aerial array processor can according to the work of the control signal control switch circuit of telecommunication circuit, thus change the mode of operation of reconfigurable antenna array, to meet the current communication requirement treating issuing equipment.
For ease of being described the application, the embodiment of the present application mainly in intelligent transportation (Intelligent Transportation System, ITS) field, is described the desktop issuing equipment that OBU issues.
By reference to the accompanying drawings the application is described in further detail below by embodiment.
Please refer to Fig. 1, present embodiments provide a kind of desktop issuing equipment, comprise housing 10, reconfigurable antenna array 20, switching circuit 30, aerial array processor 40 and telecommunication circuit 50.
The one side of housing 10 is for placing the distribution panel treating issuing equipment.
Reconfigurable antenna array 20 is arranged in housing 10, comprises multiple antenna element.In the present embodiment, reconfigurable antenna array 20 comprises multiple electrically large sizes monopole (one pole) antenna and multiple electrically large sizes PIFA (Planar Inverted-F antenna, planar inverted-F antenna) antenna, and the quantity of monopole antenna and PIFA antenna is equal, such as, its quantity be n (n be greater than 1 integer) individual.As shown in Figure 1,201 is the 1st monopole antenna, and 202 is the n-th monopole antenna, and 203 is the 1st PIFA antenna, and 204 is the n-th PIFA antenna.In other embodiments, reconfigurable antenna array 20 can only include a kind of antenna of form, also the antenna more than two kinds of forms can be comprised, and the quantity of the antenna of often kind of form also can not be identical, its antenna system used and quantity can be selected according to the practical use of desktop issuing equipment.
Switching circuit 30 is arranged in housing 10, and its first signal end is connected with reconfigurable antenna array 20, the signal input of the first signal end, output.The desktop issuing equipment that the present embodiment provides is for issuing OBU, and switching circuit 30 may be used for opening with a kind of antenna element controlled in reconfigurable antenna array 20 in multiple reconfiguration mode or cutting out.In the present embodiment, switching circuit 30 comprises multiple with antenna element switch element one to one, in the present embodiment, switch element is radio-frequency (RF) switch, namely each antenna element is controlled by a radio-frequency (RF) switch, the control end of radio-frequency (RF) switch is connected to aerial array processor 40 by control bus, and the input of radio-frequency (RF) switch and output are connected respectively to antenna element and telecommunication circuit 50.As shown in Figure 1,301 is the 1st radio-frequency (RF) switch, and 302 is 2n radio-frequency (RF) switch.In other embodiments, switching circuit 30 can also adopt other forms to realize.
Aerial array processor 40 is arranged in housing 10, is connected with the control end of switching circuit 30, and aerial array processor 40 is operated in a kind of reconfiguration mode in above-mentioned multiple reconfiguration mode for control switch circuit 30.Aerial array processor 40 can be separate with the primary processor of desktop issuing equipment, also can be mutually integrated.
Often kind of different reconfiguration mode makes different antenna elements be in opening, preferably, has multiple antenna element to be in opening, thus utilize the coupling of near-field energy, spread signal coverage under any one reconfiguration mode, promotes compatible.
It should be noted that, 2n radio-frequency (RF) switch is comprised for desktop issuing equipment, each switch has break-make two kinds of operating states, therefore reconfigurable antenna array 20 can have the 2n power kind reconfiguration mode of 2, but, in fact only rule of thumb choose several main reconfiguration mode, and these patterns are stored into aerial array processor 40 with the form of reconfiguration mode table.Aerial array processor 40 is according to the reconfiguration mode of reconfiguration mode table successively switching switch circuit 30.
Telecommunication circuit 50 is arranged in housing 10, is connected with the secondary signal end of switching circuit 30, and the signal received for obtaining reconfigurable antenna array 20 transmits with control reconfigurable antenna array 20; Telecommunication circuit 50 is also connected with aerial array processor 30, for aerial array processor pipage control signal.The signal input of secondary signal end of switching circuit 30, output.When telecommunication circuit 50 is to aerial array processor pipage control signal, telecommunication circuit 50 can according to the Signal reception situation of reconfigurable antenna array 20 under current reconfiguration mode, and control antenna array processor 30 keeps or the reconfiguration mode of switching switch circuit 40.The Signal reception situation of reconfigurable antenna array comprise reconfigurable antenna array whether can receive treat issuing equipment signal, reconfigurable antenna array communication zone, signal strength signal intensity, transmission speed etc.
Concrete, after telecommunication circuit 50 sends handshake communication signal, judge whether the signal receiving reconfigurable antenna array received, if so, then send to aerial array processor 40 and require that aerial array processor 40 control switch circuit 30 keeps the instruction of current reconfiguration mode; If not, then do not send instruction to aerial array processor 40, aerial array processor 40 also for do not receive in Preset Time telecommunication circuit 50 send instruction time, the reconfiguration mode of auto-switch circuit 30.In certain embodiments, above-mentioned instruction can be a high level, when aerial array processor 40 does not receive high level in Preset Time, just gives tacit consent to the reconfiguration mode of auto-switch circuit 30.Wherein, the signal that reconfigurable antenna array 20 receives is the feedback signal that OBU sends, and comprises the unique identifier of OBU.
Certainly, in further embodiments, also can be that telecommunication circuit 50 sends to aerial array processor 40 the short message instruction that a requirement switches reconfiguration mode.
When telecommunication circuit 50 is only radio-frequency (RF) transmit-receive circuit, signal strength signal intensity (the Received Signal Strength Indication that telecommunication circuit 50 can will receive under current reconfiguration mode, RSSI) as keeping the instruction of current reconfiguration mode to send to aerial array processor 40, if aerial array processor 40 receives this instruction, then keep current reconfiguration mode, if do not received in the given time, be switched to next reconfiguration mode; Another kind of judgment mode is: if aerial array processor 40 receives this instruction, also judge whether this signal strength signal intensity meets the requirements, if met, then keep current reconfiguration mode, if do not meet or do not receive in the given time, be then switched to next reconfiguration mode.
In certain embodiments, telecommunication circuit 50 comprise radio-frequency (RF) transmit-receive circuit, modulation/demodulation circuit, coding/decoding circuit, be respectively used to carry out radiofrequency signal transmitting-receiving, modulating/demodulating, coding/decoding are carried out to signal.Radio-frequency (RF) transmit-receive circuit, modulation/demodulation circuit, coding/decoding circuit can be realized by FPGA.In this case, telecommunication circuit 50 after the signal receiving reconfigurable antenna array received, can directly send to aerial array processor 40 control command that requires to switch reconfiguration mode.
In other embodiments, aerial array processor 40 also can travel through all reconfiguration modes of reconfiguration mode table record by the mode of poll, determine by telecommunication circuit 50 reconfiguration mode that communication efficiency is best, then notify that aerial array processor 40 is switched to this reconfiguration mode.
Aerial array processor 40 operationally, poll each store reconfiguration mode time, can be realized by software merit rating.The aerial array processor 40 realizing this function can be single-chip microcomputer, also can be FPGA, directly uses the hardware implementing preseting logic state machine.
For OBU issuing equipment, in ETC (Electronic Toll Collection, electronic charging system without parking) GB, there is the mechanism of communication handshake, utilize this mechanism to judge whether current switch configuration is applicable to communication.
Issuing equipment sends communication handshake signal, and OBU returns feedback signal, comprises the unique identification number of OBU in feedback signal.If issuing equipment is in the time-out time of regulation, have received feedback signal, then prove that current antenna allocative effect is better, then telecommunication circuit 50 provides confirmation signal to aerial array processor 40, aerial array processor 40 is in hold mode, and then completes the issuing working of OBU.If do not receive feedback signal in time-out time, prove current improperly-configured, telecommunication circuit 50 can not provide confirmation signal to aerial array processor 40, aerial array processor 40 inside has occurred configuring time-out simultaneously, thus automatically switches to lower a kind of pattern of polling list polling table (reconfiguration mode table).Generally, the time of above-mentioned time-out is all a millisecond magnitude, and reconfiguration mode in polling list polling table generally more than 16 kinds, can not perform an OBU distribution, normal about 3-5 consuming time second, so issue for OBU, although there will be configuration error many times, cause issuing date to extend, user is subjective and be not easy to discover, therefore, Consumer's Experience can not be affected.
Please refer to Fig. 2-4, when issuing with the OBU of same desktop issuing equipment to 3 kinds of different models further below, the change of the Signal reception situation of reconfigurable antenna, is described the present embodiment.In Fig. 2-4,00 is the distribution panel of desktop issuing equipment, and OBU is placed on distribution panel 00, monopole antenna and PIFA antenna respectively have 2, be divided into two arrangements to put, often arrange and comprise a monopole antenna and a PIFA antenna, and dissimilar antenna be crisscross arranged.P1 and P2 is respectively 1PIFA antenna and 2PIFA antenna, M1 and M2 is respectively 1monopole antenna and 2monopole antenna.
(1) please refer to Fig. 2, when being placed on by the OBU of the 1st kind of model on distribution panel 00, the communication zone of P1, P2, M1, M2 is respectively P1', P2', M1', M2'.Visible, the communication zone for the OBU of the 1st kind of model, P1 and P2 can cover most of region of distribution panel 00, and therefore, after aerial array processor 40 reconstructs, can determine that reconfiguration mode is: P1, P2 open, M1, M2 close.
(2) please refer to Fig. 3, when being placed on by the OBU of the 2nd kind of model on distribution panel 00, the communication zone of P1, P2, M1, M2 is respectively P1', P2', M1', M2'.Visible, the communication zone for the OBU of the 2nd kind of model, M1 and M2 can cover most of region of distribution panel 00, therefore, after aerial array processor 40 reconstructs, can determine that reconfiguration mode is:, P1, P2 close, and M1, M2 open.
(3) please refer to Fig. 3, when being placed on by the OBU of the 3rd kind of model on distribution panel 00, after aerial array processor 40 reconstructs, determine that reconfiguration mode is: P1, P2, M1, M2 open.When namely only having P1, P2, M1, M2 to open, the communication zone of reconfigurable antenna array 20 could cover distribution panel 00 preferably, thus carries out issuing working to OBU simultaneously.When having illustrated in Fig. 3 that P1, P2, M1, M2 open simultaneously, the communication zone MP' after intercoupling.Because the coupling of P1, P2, M1, M2, near-field energy is distributed more even, form larger communication zone, avoid signal in the spatial distribution drastic change of communication zone, reduce signal simultaneously and saturated chance occurs, ensured communication success rate.It should be noted that in Fig. 2 and Fig. 3, also to there is the coupling of communication zone, but in order to indicate the communication zone of individual antenna more legibly, the communication zone after coupling is not shown in figs. 2 and 3.
The communication zone of P1, P2, M1, M2 is respectively P1', P2', M1', M2'.Visible, the communication zone for the OBU of the 2nd kind of model, M1 and M2 can cover the region of large department distribution panel 00, and therefore, after aerial array processor 40 reconstructs, can determine that reconfiguration mode is: P1, P2 close, M1, M2 open.
The desktop issuing equipment that OBU is issued that the present embodiment provides, by increasing switching circuit and aerial array processor, in communication process, by in a kind of reconfiguration mode of aerial array processor control switch circuit working in multiple reconfiguration mode, switching circuit opens according to the antenna element that this reconfiguration mode controls in reconfigurable antenna array or cuts out, telecommunication circuit is according to the Signal reception situation of reconfigurable antenna array under current reconfiguration mode, the reconfiguration mode of the maintenance of control antenna array processor or switching switch circuit, thus be met the current reconfiguration mode waiting to issue devices communicating demand.Therefore, desktop issuing equipment can select the good reconfiguration mode of communication efficiency to adapt to different treat issuing equipment automatically.
The desktop issuing equipment that the present embodiment provides is when issuing OBU, and reconfigurable antenna array can be chosen preferably reconfiguration mode and carry out work, thus the OBU of compatible different model, improve communication quality.It should be noted that, the desktop issuing equipment of the present embodiment is not limited to OBU issuing equipment, is also applicable to the issuing equipment that other use reconfigurable antenna array, the issuing equipments such as such as mass transit card, bank card, library card.
Above content is the further description done the application in conjunction with concrete execution mode, can not assert that the concrete enforcement of the application is confined to these explanations.For the application person of an ordinary skill in the technical field, under the prerequisite not departing from the present application design, some simple deduction or replace can also be made.
Claims (10)
1. a desktop issuing equipment, is characterized in that, comprising:
Housing, the one side of described housing is for placing the distribution panel treating issuing equipment;
Reconfigurable antenna array, described reconfigurable antenna array arrangement, in housing, comprises multiple antenna element;
Switching circuit, its first signal end is connected with reconfigurable antenna array;
Aerial array processor, described aerial array processor is connected with the control end of switching circuit, for controlling described switching circuit work;
Telecommunication circuit, described telecommunication circuit is connected with the secondary signal end of switching circuit, for obtaining the signal of reconfigurable antenna array received and controlling reconfigurable antenna array emitter signal; Telecommunication circuit is also connected with aerial array processor, for aerial array processor pipage control signal.
2. equipment as claimed in claim 1, it is characterized in that, the antenna element of described reconfigurable antenna array is near field antenna.
3. equipment as claimed in claim 2, it is characterized in that, described reconfigurable antenna array comprises multiple electrically large sizes monopole antenna and multiple electrically large sizes PIFA antenna.
4. equipment as claimed in claim 3, it is characterized in that, the quantity of described monopole antenna and PIFA antenna is equal.
5. equipment as claimed in claim 4, it is characterized in that, described monopole antenna and PIFA antenna respectively have 2, are divided into two arrangements and put, and often arrange and comprise a monopole antenna and a PIFA antenna.
6. the equipment according to any one of claim 1-5, is characterized in that, described switching circuit comprises multiple with antenna element switch element one to one.
7. equipment as claimed in claim 6, it is characterized in that, described switch element is radio-frequency (RF) switch.
8. the equipment according to any one of claim 1-5, it is characterized in that, described telecommunication circuit comprises radio-frequency (RF) transmit-receive circuit, modulation/demodulation circuit, coding/decoding circuit, is respectively used to carry out the transmitting-receiving of radiofrequency signal, carries out modulating/demodulating, coding/decoding to signal.
9. equipment as claimed in claim 8, it is characterized in that, described modulation/demodulation circuit, coding/decoding circuit are realized by FPGA.
10. the equipment according to any one of claim 1-5, is characterized in that, described desktop issuing equipment is board units issuing equipment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520100478.1U CN204375980U (en) | 2015-02-11 | 2015-02-11 | A kind of desktop issuing equipment |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201520100478.1U CN204375980U (en) | 2015-02-11 | 2015-02-11 | A kind of desktop issuing equipment |
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| CN204375980U true CN204375980U (en) | 2015-06-03 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105048108A (en) * | 2015-06-30 | 2015-11-11 | 南京理工大学 | Time modulation Van Atta direction backtracking three-function reconfigurable common-aperture antenna array |
| CN105374079A (en) * | 2015-12-18 | 2016-03-02 | 北京握奇智能科技有限公司 | Desktop terminal and method for issuing OBU and ETC card |
| CN106549226A (en) * | 2015-09-22 | 2017-03-29 | 启碁科技股份有限公司 | Radio-frequency system |
| US10256552B2 (en) | 2015-09-22 | 2019-04-09 | Wistron Neweb Corporation | Radio-frequency transceiver system |
-
2015
- 2015-02-11 CN CN201520100478.1U patent/CN204375980U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105048108A (en) * | 2015-06-30 | 2015-11-11 | 南京理工大学 | Time modulation Van Atta direction backtracking three-function reconfigurable common-aperture antenna array |
| CN105048108B (en) * | 2015-06-30 | 2018-01-23 | 南京理工大学 | Recall three reconfigurable function shared aperture antenna battle arrays in time-modulation Fan Ata directions |
| CN106549226A (en) * | 2015-09-22 | 2017-03-29 | 启碁科技股份有限公司 | Radio-frequency system |
| US10256552B2 (en) | 2015-09-22 | 2019-04-09 | Wistron Neweb Corporation | Radio-frequency transceiver system |
| CN106549226B (en) * | 2015-09-22 | 2019-09-03 | 启碁科技股份有限公司 | Radio-frequency system |
| CN105374079A (en) * | 2015-12-18 | 2016-03-02 | 北京握奇智能科技有限公司 | Desktop terminal and method for issuing OBU and ETC card |
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