CN102262739A - Radio frequency identification (RFID) reader structure - Google Patents
Radio frequency identification (RFID) reader structure Download PDFInfo
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- CN102262739A CN102262739A CN2011102050459A CN201110205045A CN102262739A CN 102262739 A CN102262739 A CN 102262739A CN 2011102050459 A CN2011102050459 A CN 2011102050459A CN 201110205045 A CN201110205045 A CN 201110205045A CN 102262739 A CN102262739 A CN 102262739A
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- cavity
- main circuit
- rfid reader
- circuit system
- write line
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Abstract
The invention discloses a radio frequency identification (RFID) reader structure. The structure comprises: a main circuit system of a reader and writer; a first installation cavity, which is used to install the main circuit system of the reader and writer; an antenna radiation system, which is connected with the main circuit system of the reader and writer; a second cavity, which is used to install the antenna radiation system and is fixed with the first cavity. The RFID reader structure also comprises an electromagnetic shielding plate which is used to isolate the main circuit system of the reader and writer and the antenna radiation system. In the invention, through arranging the electromagnetic shielding plate between the main circuit system of the reader and writer and the antenna radiation system, the RFID reader structure is divided into two parts. Because of electromagnetic field isolation of the main circuit system of the reader and writer and the antenna radiation system, mutual interference between the main circuit system of the reader and writer and the antenna radiation system can be restrained to the maximum.
Description
Technical field
The relevant a kind of reader structure of the present invention relates in particular to a kind of round-the-clock RFID reader structure.
Background technology
REID (Radio Frequency Identification) is a kind of noncontact tag information discriminating technology, rfid system is made up of Circuits System, electronic tag and antenna system, RFID reader structure is to utilize wireless radio frequency mode to carry out the noncontact bidirectional data communication, to reach the purpose of recognition objective electronic tag.In the ultrahigh frequency RFID reader structure of the prior art shielding element is not set, the electromagnetic field of antenna system is easily with producing the phase mutual interference between the Circuits System like this.
Therefore, at above-mentioned technical matters, be necessary to provide a kind of structure improved RFID reader structure that has, to overcome above-mentioned defective.
Summary of the invention
In view of this, the invention provides a kind of RFID reader structure, have good Electromagnetic Compatibility.
For achieving the above object, the invention provides following technical scheme:
A kind of RFID reader structure, it comprises the read write line main circuit system, in order to first of read write line main circuit system to be installed cavity, the aerial radiation system that is connected with the read write line main circuit system and second cavity in order to fix up an aerial wire radiating system and to be fixed together with first cavity is installed, and described RFID reader structure also comprises the barricade of isolating read write line main circuit system and aerial radiation system.
Preferably, in above-mentioned RFID reader structure, be connected by cable between described aerial radiation system and the read write line main circuit system, described barricade is provided with for described cable and passes to connect the perforation of read write line main circuit system and aerial radiation system.
Preferably, in above-mentioned RFID reader structure, described first cavity comprises first body, vertically extend first body first wall extension and by first body and first wall extension surround in order to accommodate first receiving space of read write line main circuit system, described first cavity also comprises first installation portion that protrudes in first receiving space, and described read write line main circuit system is installed on first installation portion.
Preferably, in above-mentioned RFID reader structure, described first cavity also comprises second installation portion that protrudes in first receiving space and be positioned at the first installation portion side, and described barricade is installed on second installation portion, and described read write line main circuit system is between first body and barricade.
Preferably, in above-mentioned RFID reader structure, described barricade is provided with around the outside lateral wall in one week, and described lateral wall contacts with the inwall of first wall extension.
Preferably, in above-mentioned RFID reader structure, described second cavity comprises second body, vertically extends second wall extension of second body and second receiving space that is surrounded by second body and second wall extension, described second cavity also comprise protrude in second receiving space the 3rd installation portion, described aerial radiation system is installed on the 3rd installation portion.
Preferably, in above-mentioned RFID reader structure, described second body is provided with the radiation window of perforation, and the electrode of described aerial radiation system is over against this radiation window.
Preferably, in above-mentioned RFID reader structure, be provided with the waterproof plastic plate between described radiation window and the aerial radiation system.
Preferably, in above-mentioned RFID reader structure, be provided with the polytetrafluoroethylene sealing gasket circle between described first cavity and second cavity.
Preferably, in above-mentioned RFID reader structure, described read write line main circuit system is separately fixed at first with the aerial radiation system by screw and installs on the cavity and the second installation cavity.
From technique scheme as can be seen, the RFID reader structure of the embodiment of the invention is by being provided with barricade between read write line main circuit system and aerial radiation system, this design is divided into two RFID reader structure, the electromagnetic field of read write line main circuit system and aerial radiation system isolated, retrained the mutual interference mutually between read write line main circuit system and the aerial radiation system to greatest extent.
Description of drawings
In order to be illustrated more clearly in the embodiment of the invention or technical scheme of the prior art, to do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art below, apparently, accompanying drawing in describing below only is some embodiments of the present invention, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the structural representation of first cavity of embodiment of the invention RFID reader structure.
Fig. 2 is the phantom view of first cavity among Fig. 1.
Fig. 3 is the structural representation of second cavity of embodiment of the invention RFID reader structure.
Fig. 4 is the structural representation of the barricade of embodiment of the invention RFID reader structure.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the invention, the technical scheme in the embodiment of the invention is described in detail, obviously, described embodiment only is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment among the present invention, the every other embodiment that those of ordinary skills are obtained under the prerequisite of not making creative work belongs to the scope of protection of the invention.
The invention discloses a kind of RFID reader structure, this RFID reader structure has good Electro Magnetic Compatibility.
See also Fig. 1 to shown in Figure 3, described RFID reader structure comprises read write line main circuit system (not shown), in order to first cavity 1, the aerial radiation system (not shown) that is connected with the read write line main circuit system and second cavity 2 in order to fix up an aerial wire radiating system and to be fixed together with first cavity 1 of read write line main circuit system to be installed.Described first cavity 1 and second cavity 2 adopt aluminum alloy materials, and described first cavity 1 and second cavity, 2 simple shape, be easy to processing, processing technology can be a cutting technology, also can be the extrusion process of mfg. moulding die, and this metal material has certain ELECTROMAGNETIC RADIATION SHIELDING function.
See also shown in Figure 4ly, be connected by cable (not shown) between described aerial radiation system and the read write line main circuit system.Described RFID reader structure also comprises the barricade 3 of isolated antennas radiating system and read write line main circuit system.Described barricade 3 is provided with for described cable and passes to connect the perforation 31 of aerial radiation system and read write line main circuit system.
See also shown in Figure 1, described first cavity 1 is the rectangular shape of hollow form, described first cavity 1 comprises first body 11, vertically extend first body 11 first wall extension 12 and by first body 11 and first wall extension 12 surround in order to accommodate first receiving space 13 of read write line main circuit system.Described first cavity 1 also comprises some first installation portions 14 that protrude in first receiving space 13, and described read write line main circuit system is installed on first installation portion 14.Described first installation portion 14 protrudes out in first receiving space 13 from the middle position near first body 11, in embodiments of the present invention, described first installation portion 14 comprises four, described four first installation portions 14 are lined up two corresponding in twos rows of position, and these four first installation portions 14 are secured together from the both sides and the read write line main circuit system of read write line main circuit system respectively.Described first installation portion 14 is provided with first threaded hole 141, the both sides of described read write line main circuit system are provided with and the first corresponding through hole of first threaded hole, 141 positions, and described read write line main circuit system passes first through hole by screw and screws in first threaded hole 141 and be secured together with first installation portion 14.
See also Fig. 1 and shown in Figure 4, described first cavity 1 also comprises second installation portion 15 that protrudes in first receiving space 13 and be positioned at four first installation portion 14 sides, described barricade 3 is installed on second installation portion 15, and described read write line main circuit system is between first body 11 and barricade 3.Described second installation portion 15 also comprises four, these four second installation portions 15 are separately positioned on the place at four angles of first cavity 1, described second installation portion 15 is provided with second threaded hole 151, described barricade is provided with and second threaded hole, 151 position corresponding second through hole 33, and described barricade 3 passes second through hole 33 by screw and screws in second threaded hole 151 and be fixed together with second installation portion 15.Described barricade 3 is provided with the lateral wall 32 around one week of the outside, and after described barricade 3 was installed in first cavity 1, described lateral wall 32 contacted with the inwall of first wall extension 12.So be provided with, by barricade 3 RFID reader structure is divided into two, the electromagnetic field of read write line main circuit system and aerial radiation system is isolated, and barricade 3 is arranged to contact with the inwall of first cavity 1 to greatest extent, can retrain the mutual interference mutually between read write line main circuit system and the aerial radiation system to greatest extent.
See also shown in Figure 3ly, described second cavity 2 also is the rectangular shape of hollow form.Described second cavity 2 comprises second body 21, vertically extends second wall extension 22 of second body 21 and second receiving space 23 that is surrounded by second body 21 and second wall extension 22.Described second body 21 is provided with the radiation window 25 of perforation, and the electrode of described aerial radiation system is over against this radiation window 25.Described radiation window 25 is quadrilateral structure, described radiation window 25 comprises first pair of parallel edges and second pair of parallel edges, first pair of parallel edges of described radiation window 25 extends to second wall extension, 22 places, and second pair of parallel edges of described radiation window 25 do not extend to second wall extension, 22 places.
Please continue to consult shown in Figure 3, described second cavity 2 also comprise protrude in second receiving space 23 the 3rd installation portion 24, described aerial radiation system is installed on the 3rd installation portion 24.Described the 3rd installation portion 24 comprises three, and these three the 3rd installation portions 24 are installed in the side of second pair of parallel edges respectively.Described the 3rd installation portion 24 is provided with the 3rd threaded hole 241, described aerial radiation system is provided with and the corresponding third through-hole in the 3rd threaded hole 241 positions, and described aerial radiation system passes third through-hole by screw and screws in the 3rd threaded hole 241 and be fixed together with the 3rd installation portion 24.Be provided with waterproof plastic plate (not shown) between described radiation window 25 and the aerial radiation system.The RFID reader structure of the embodiment of the invention mainly is to utilize second cavity 2 radiating system that fixes up an aerial wire, and radiation window 25 is of a size of 133 * 48.5mm, can be effectively the power energy emission of aerial radiation system to the space.
Be provided with teflon rubber gasket (not shown) between described first cavity 1 and second cavity 2, so be provided with, can realize the round-the-clock environmental work of RFID reader structure, this RFID reader structure can be indoor, the field, rugged environments such as chemical gas are work down.
The RFID reader structure of the embodiment of the invention is by being provided with barricade 3 between read write line main circuit system and aerial radiation system, this design is divided into two RFID reader structure, the electromagnetic field of read write line main circuit system and aerial radiation system isolated, retrained the mutual interference mutually between read write line main circuit system and the aerial radiation system to greatest extent.
The RFID reader structure of the embodiment of the invention is the RFID reader with 2.45GHz ultrahigh frequency, this RFID reader structure has good Electro Magnetic Compatibility, the built-in aerial radiating system, has good all weather operations pattern, can be indoor, the field, rugged environments such as chemical gas are work down.
To the above-mentioned explanation of the disclosed embodiments, make this area professional and technical personnel can realize or use the present invention.Multiple modification to these embodiment will be conspicuous concerning those skilled in the art, and defined herein General Principle can realize under the situation that does not break away from the spirit or scope of the present invention in other embodiments.Therefore, the present invention will can not be restricted to these embodiment shown in this article, but will meet and principle disclosed herein and features of novelty the wideest corresponding to scope.
Claims (10)
1. RFID reader structure, it comprise the read write line main circuit system, in order to install first of read write line main circuit system install cavity, the aerial radiation system that is connected with the read write line main circuit system and in order to fix up an aerial wire radiating system and with second cavity that first cavity is fixed together, it is characterized in that: described RFID reader structure also comprises the barricade of isolation read write line main circuit system and aerial radiation system.
2. RFID reader structure according to claim 1, it is characterized in that: be connected by cable between described aerial radiation system and the read write line main circuit system, described barricade is provided with for described cable and passes to connect the perforation of read write line main circuit system and aerial radiation system.
3. RFID reader structure according to claim 1, it is characterized in that: described first cavity comprises first body, vertically extend first body first wall extension and by first body and first wall extension surround in order to accommodate first receiving space of read write line main circuit system, described first cavity also comprises first installation portion that protrudes in first receiving space, and described read write line main circuit system is installed on first installation portion.
4. RFID reader structure according to claim 3, it is characterized in that: described first cavity also comprises second installation portion that protrudes in first receiving space and be positioned at the first installation portion side, described barricade is installed on second installation portion, and described read write line main circuit system is between first body and barricade.
5. RFID reader structure according to claim 3 is characterized in that: described barricade is provided with around the outside lateral wall in one week, and described lateral wall contacts with the inwall of first wall extension.
6. RFID reader structure according to claim 1, it is characterized in that: described second cavity comprises second body, vertically extends second wall extension of second body and second receiving space that is surrounded by second body and second wall extension, described second cavity also comprise protrude in second receiving space the 3rd installation portion, described aerial radiation system is installed on the 3rd installation portion.
7. RFID reader structure according to claim 6, it is characterized in that: described second body is provided with the radiation window of perforation, and the electrode of described aerial radiation system is over against this radiation window.
8. RFID reader structure according to claim 7 is characterized in that: be provided with the waterproof plastic plate between described radiation window and the aerial radiation system.
9. RFID reader structure according to claim 1 is characterized in that: be provided with the polytetrafluoroethylene sealing gasket circle between described first cavity and second cavity.
10. RFID reader structure according to claim 1 is characterized in that: described read write line main circuit system is separately fixed at first with the aerial radiation system by screw and installs on the cavity and the second installation cavity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102050459A CN102262739B (en) | 2011-07-21 | 2011-07-21 | Radio frequency identification (RFID) reader structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102050459A CN102262739B (en) | 2011-07-21 | 2011-07-21 | Radio frequency identification (RFID) reader structure |
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| Publication Number | Publication Date |
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| CN102262739A true CN102262739A (en) | 2011-11-30 |
| CN102262739B CN102262739B (en) | 2013-11-27 |
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| CN2011102050459A Active CN102262739B (en) | 2011-07-21 | 2011-07-21 | Radio frequency identification (RFID) reader structure |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111654331A (en) * | 2020-05-27 | 2020-09-11 | 西安朗普达通信科技有限公司 | Hand-held wireless equipment for reducing antenna interference |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6483719B1 (en) * | 2000-03-21 | 2002-11-19 | Spraylat Corporation | Conforming shielded form for electronic component assemblies |
| CN1577966A (en) * | 2003-07-29 | 2005-02-09 | 三星电子株式会社 | Internal antenna device for portable wireless terminal |
| CN101763498A (en) * | 2009-11-27 | 2010-06-30 | 成都九洲电子信息系统有限责任公司 | Area control circuit for passive ultra high frequency radio frequency identification |
| CN202167042U (en) * | 2011-07-21 | 2012-03-14 | 苏州中科集成电路设计中心有限公司 | RFID reader structure |
-
2011
- 2011-07-21 CN CN2011102050459A patent/CN102262739B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6483719B1 (en) * | 2000-03-21 | 2002-11-19 | Spraylat Corporation | Conforming shielded form for electronic component assemblies |
| CN1577966A (en) * | 2003-07-29 | 2005-02-09 | 三星电子株式会社 | Internal antenna device for portable wireless terminal |
| CN101763498A (en) * | 2009-11-27 | 2010-06-30 | 成都九洲电子信息系统有限责任公司 | Area control circuit for passive ultra high frequency radio frequency identification |
| CN202167042U (en) * | 2011-07-21 | 2012-03-14 | 苏州中科集成电路设计中心有限公司 | RFID reader structure |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111654331A (en) * | 2020-05-27 | 2020-09-11 | 西安朗普达通信科技有限公司 | Hand-held wireless equipment for reducing antenna interference |
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| CN102262739B (en) | 2013-11-27 |
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