CN102082329A - Circular polarization multi-antenna system used in field of ultrahigh frequency RFID access control management - Google Patents
Circular polarization multi-antenna system used in field of ultrahigh frequency RFID access control management Download PDFInfo
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- CN102082329A CN102082329A CN2009101994615A CN200910199461A CN102082329A CN 102082329 A CN102082329 A CN 102082329A CN 2009101994615 A CN2009101994615 A CN 2009101994615A CN 200910199461 A CN200910199461 A CN 200910199461A CN 102082329 A CN102082329 A CN 102082329A
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Abstract
The invention belongs to the wireless communication field and specifically relates to a circular polarization multi-antenna system used in the field of the ultrahigh frequency RFID access control management. The radio frequency identification technology applied to the access control management requires an RFID reader/writer to possess the properties of high efficiency and non-blind area in reading/writing labels carried by people who pass through the gate. Antennae act as the reception and emission terminal equipment of the RFID reader/writer and the performance index of the antenna is the dominating factor in influencing the reading/writing performance of the RFID reader/writer. Therefore, the invention designs a circular polarization multi-antenna system used in the access control management for the entrance and leaving in some important conferences to reach the goal of non-contacting and high-efficient management of the RFID system on attendants.
Description
Technical field
The invention belongs to field of wireless communication, specifically is a kind of circular polarization, multiaerial system that is used for ultrahigh frequency RFID entrance guard management field.
Background technology
The Chinese of Radio Frequency Identification (RFID) is a REID.Radio-frequency identification reader/writer is handled the entrained great deal of related information of label that is identified on the object by the Communication Control machine, and sets up database with the form of Network Transmission on the control backstage, realizes " information resources socialization " management functions such as people, article.Radio-frequency (RF) identification (RFID) technology was established its theoretical foundation so far from 1948, its original basic theory and basic technology are very ripe, yet, be accompanied by popularizing of Internet technology in recent years, logistics, commerce, traffic, military logistics etc. some for the most responsive field of the demand of ecommerce, just take the lead in beginning implementation to the RFID The Application of Technology.With respect to the tional identification mode, as bar code recognition, image recognition, bio-identification, voice recognition etc., radio-frequency (RF) identification has little, noncontact affected by environment, contain much information and variable, anti-counterfeiting is functional, adapt to the advantage of handling and be convenient to unified management on a large scale.Than industrially developed country such as the U.S. early and Japan, it has obtained the promotion energetically of business and government as an industry, and has obtained great success in the RFID starting.Wal-Mart and the Metro two big global retailer giants RFID technology that takes the lead in proposing in its retail management, at first to use particularly, one time, the RFID technology becomes the focus of the world, domestic various medium follow-up reports, various constantly to propose based on " the integrated application service system of RFID " solution, also become the hot spot technology that use in fields such as gate inhibition's control, asset management, supply chain management and communications and transportation, indicating that research and development have begun to enter senior application model to the RFID application technology, entering " resource-type " socialization application and development phase.
At present, " mass transit card " that uses in the numerous cities of China, much all built-in RFID chip, also implanted RFID chip in the hundreds of millions of resident identification card of China, aspect gate inhibition's electronic bill, Beijing Olympic Games admission ticket in 2008 also adopts the RFID technology to carry out false proof management, but is confined to the high frequency field.In logistics field, be that the container automatic recognition system of core has become main flow gradually with RFID, logistics links such as RFID storage abroad, dispensing have obtained successful Application especially.At field of traffic, China railways department relies on the RFID technology to be implemented in national unified dispatching buses, and has reduced administrative structure, has improved the efficiency of management.Aspects such as China's fire-fighting equipment management, police equipment management, safe coal management, urban public utilities management, medical control, agricultural product management also begin to attempt and apply the RFID technology.
The most basic rfid system is made up of electronic tag, read write line, antenna and middleware.Wherein, electronic tag is managed the electronic ID card of goods and materials, is putting down in writing by the useful archive information of management goods and materials.Electronic tag is made up of chip and label antenna, communicates by inductance coupling high or electromagnetic backscatter principle and read write line, realizes the management function of rfid system.At present, in RFID entrance guard management field, extensive use at present be high frequency (HF 13.56MHz) technology, hyperfrequency (UHF) technology is used seldom.
Summary of the invention
The objective of the invention is to satisfy identification and the management expectancy that the existing personnel of RFID technology in the entrance guard management field have free passage, overcome simultaneously to worn by administrative staff label can not entirely accurate the defective of recognition, a kind of circular polarization, multiaerial system that is used for ultrahigh frequency RFID entrance guard management field is provided.The antenna system of the present invention's design can have many antennas selectivity characteristic under the control of read write line radio frequency link switch, to have non-blind area identification management characteristic into and out of gate inhibition's passage personnel label.
The present invention is achieved by the following technical solutions, the present invention includes: access door radome (1), admission passage gate antenna battle array (2), leave access door antenna array (3).Admission passage gate antenna battle array (2), leave access door antenna array (3) and be fixed on access door radome (1) inwall, and from the horizontal by the miter angle degree.Admission passage gate antenna battle array (2) is connected with read write line by radio frequency line, and by master controller the admission passage personnel is discerned management; Leave access door antenna array (3) and be connected with read write line, and discern management to leaving the passage personnel by master controller by radio frequency line.
The present invention includes: access door radome (1), admission passage gate antenna battle array (2), leave access door antenna array (3).Admission passage gate antenna battle array (2), leave access door antenna array (3) and all have circular polarization characteristics, can form good Polarization match with general linear polarization label, radio frequency link switch by the rfid interrogator chip carries out many days line options to antenna system, realizes wear the non-blind area recognition of label into and out of the access door personnel.
Described circular polarization, the multiaerial system that is used for ultrahigh frequency RFID entrance guard management field, all antenna elements all have the broadband effect, antenna is 900MHz-940MHz in the bandwidth of return loss during less than-15dB, the axial ratio of antenna in operating frequency is 920MHz-925MHz is less than 3, and gain is greater than 6dBi.
The present invention and prior art contrast, and its effect is actively with tangible.Innovative point of the present invention just provides a kind of the have broadband of day line options, the multi-antenna structure of circular polarization, and this scheme is applied to RFID technical management field, can be used as have free passage supervision and realize the non-blind area management of ultrahigh frequency RFID entrance guard management personnel.
Description of drawings
Fig. 1 is a kind of circular polarization, multiaerial system structure chart that is used for ultrahigh frequency RFID entrance guard management field of the present invention.
Fig. 2 is a kind of circular polarization, multiaerial system sterogram that is used for ultrahigh frequency RFID entrance guard management field of the present invention.
Embodiment
Below in conjunction with accompanying drawing enforcement of the present invention is elaborated: originally being implemented in the technical solution of the present invention is to implement under the prerequisite, provided detailed execution mode, but protection scope of the present invention is not limited to following embodiment.
As shown in Figure 1, present embodiment comprises: access door radome 1, admission passage gate antenna battle array 2, leave access door antenna array 3.Admission passage gate antenna battle array 2, leave access door antenna array 3 and be fixed on access door radome 1 inwall, and from the horizontal by the miter angle degree.
As Fig. 1, admission passage gate antenna battle array 2 is connected with read write line by radio frequency line, and by master controller the admission passage personnel is discerned management; Leave access door antenna array 3 and be connected with read write line, and discern management to leaving the passage personnel by master controller by radio frequency line.
Circular polarization, the multiaerial system that is used for ultrahigh frequency RFID entrance guard management field of the present invention, admission passage gate antenna battle array 2, leave access door antenna array 3 and all have circular polarization characteristics, can form good Polarization match with general linear polarization label, radio frequency link switch by the rfid interrogator chip carries out many days line options to antenna system, realizes wear the non-blind area recognition of label into and out of the access door personnel.
As Fig. 1, circular polarization, the multiaerial system that is used for ultrahigh frequency RFID entrance guard management field of the present invention, all antenna elements all have the broadband effect, antenna is 900MHz-940MHz in the bandwidth of return loss during less than-15dB, the axial ratio of antenna in operating frequency is 920MHz-925MHz is less than 3, and gain is greater than 6dBi.
As Fig. 1, circular polarization, the multiaerial system that is used for ultrahigh frequency RFID entrance guard management field of the present invention can support UHF RFID ISO 18000-6B and ISO 18000-6C agreement and all working in the RFID of 900MHz-940MHz communication protocol.
Claims (4)
1. circular polarization, multiaerial system that is used for ultrahigh frequency RFID entrance guard management field comprises: access door radome (1), admission passage gate antenna battle array (2), leave access door antenna array (3).
2. circular polarization, multiaerial system that is used for ultrahigh frequency RFID entrance guard management field, it is characterized in that: admission passage gate antenna battle array (2), leave access door antenna array (3) and all have circular polarization characteristics, can form good Polarization match with general linear polarization label, radio frequency link switch by the rfid interrogator chip carries out many days line options to antenna system, realizes the label non-blind area recognition to wearing into and out of the access door personnel.
3. circular polarization, multiaerial system that is used for ultrahigh frequency RFID entrance guard management field, all antenna elements all have the broadband effect, antenna is 900MHz-940MHz in the bandwidth of return loss during less than-15dB, the axial ratio of antenna in operating frequency is 920MHz-925MHz is less than 3, and gain is greater than 6dBi.
4. circular polarization, a multiaerial system that is used for ultrahigh frequency RFID entrance guard management field can support UHF RFID ISO 18000-6B and ISO 18000-6C agreement and all working in the RFID of 900MHz-940MHz communication protocol.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101994615A CN102082329A (en) | 2009-11-27 | 2009-11-27 | Circular polarization multi-antenna system used in field of ultrahigh frequency RFID access control management |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101994615A CN102082329A (en) | 2009-11-27 | 2009-11-27 | Circular polarization multi-antenna system used in field of ultrahigh frequency RFID access control management |
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| CN102082329A true CN102082329A (en) | 2011-06-01 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2009101994615A Pending CN102082329A (en) | 2009-11-27 | 2009-11-27 | Circular polarization multi-antenna system used in field of ultrahigh frequency RFID access control management |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104200248A (en) * | 2014-08-21 | 2014-12-10 | 现代牧业(集团)有限公司 | Cow occupation recognition method based on multiple radio frequency identification device (RFID) antennas |
| CN104899627A (en) * | 2015-07-03 | 2015-09-09 | 成都恒高科技有限公司 | Access control system and access control method |
| CN104933457A (en) * | 2015-07-03 | 2015-09-23 | 成都恒高科技有限公司 | Detection method and apparatus for signal source in detection area |
| CN104952133A (en) * | 2015-07-03 | 2015-09-30 | 成都恒高科技有限公司 | Access control system |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060132312A1 (en) * | 2004-12-02 | 2006-06-22 | Tavormina Joseph J | Portal antenna for radio frequency identification |
| CN1845179A (en) * | 2006-04-30 | 2006-10-11 | 宁焕生 | Dual frequency active label for non-parking charge |
| CN201146246Y (en) * | 2008-01-17 | 2008-11-05 | 华南理工大学 | Radio frequency recognition circular polarization reader array antenna based on annular feed network |
-
2009
- 2009-11-27 CN CN2009101994615A patent/CN102082329A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060132312A1 (en) * | 2004-12-02 | 2006-06-22 | Tavormina Joseph J | Portal antenna for radio frequency identification |
| CN1845179A (en) * | 2006-04-30 | 2006-10-11 | 宁焕生 | Dual frequency active label for non-parking charge |
| CN201146246Y (en) * | 2008-01-17 | 2008-11-05 | 华南理工大学 | Radio frequency recognition circular polarization reader array antenna based on annular feed network |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104200248A (en) * | 2014-08-21 | 2014-12-10 | 现代牧业(集团)有限公司 | Cow occupation recognition method based on multiple radio frequency identification device (RFID) antennas |
| CN104200248B (en) * | 2014-08-21 | 2017-11-17 | 现代牧业(集团)有限公司 | A kind of milk cow occupy-place recognition methods based on more RFID antennas |
| CN104899627A (en) * | 2015-07-03 | 2015-09-09 | 成都恒高科技有限公司 | Access control system and access control method |
| CN104933457A (en) * | 2015-07-03 | 2015-09-23 | 成都恒高科技有限公司 | Detection method and apparatus for signal source in detection area |
| CN104952133A (en) * | 2015-07-03 | 2015-09-30 | 成都恒高科技有限公司 | Access control system |
| CN104933457B (en) * | 2015-07-03 | 2017-11-28 | 成都恒高科技有限公司 | The detection method and device of signal source in detection zone |
| CN104899627B (en) * | 2015-07-03 | 2017-11-28 | 成都恒高科技有限公司 | Access management system and room entry/exit management method |
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Application publication date: 20110601 |