CN102262739B - Radio frequency identification (RFID) reader structure - Google Patents
Radio frequency identification (RFID) reader structure Download PDFInfo
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- CN102262739B CN102262739B CN2011102050459A CN201110205045A CN102262739B CN 102262739 B CN102262739 B CN 102262739B CN 2011102050459 A CN2011102050459 A CN 2011102050459A CN 201110205045 A CN201110205045 A CN 201110205045A CN 102262739 B CN102262739 B CN 102262739B
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- circuit system
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- 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, relate 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 comprised 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 identification target electronic label.In ultrahigh frequency RFID reader structure of the prior art, shielding element is not set, the electromagnetic field of antenna system is easily with between Circuits System, producing the phase mutual interference like this.
Therefore, for above-mentioned technical matters, be necessary to provide a kind of structure improved RFID reader structure that has, to overcome above-mentioned defect.
Summary of the invention
In view of this, the invention provides a kind of RFID reader structure, have good Electro Magnetic Compatibility (EMC).
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 be connected with the read write line main circuit system and the second cavity in order to fix up an aerial wire radiating system and to be fixed together with the first cavity is installed, and described RFID reader structure also comprises the barricade of isolation read write line main circuit system and aerial radiation system.
Preferably, in above-mentioned RFID reader structure, by cable, be connected between described aerial radiation system and read write line main circuit system, described barricade is provided with the perforation of passing to connect read write line main circuit system and aerial radiation system for described cable.
Preferably, in above-mentioned RFID reader structure, described the first cavity comprises the first body, vertically extend the first body the first wall extension and by first body and the first wall extension surround in order to accommodate the first receiving space of read write line main circuit system, described the first cavity also comprises the first installation portion protruded in the first receiving space, and described read write line main circuit system is arranged on the first installation portion.
Preferably, in above-mentioned RFID reader structure, described the first cavity also comprises the second installation portion that protrudes in the first receiving space and be positioned at the first installation portion side, and described barricade is arranged on the 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 the first wall extension.
Preferably, in above-mentioned RFID reader structure, described the second cavity comprises the second body, vertically extends the second wall extension of the second body and the second receiving space surrounded by the second body and the second wall extension, described the second cavity also comprise protrude in the second receiving space the 3rd installation portion, described aerial radiation system is arranged on the 3rd installation portion.
Preferably, in above-mentioned RFID reader structure, described the 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 aerial radiation system.
Preferably, in above-mentioned RFID reader structure, be provided with the polytetrafluoroethylene sealing gasket circle between described the first cavity and the 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 cavity and the second installation cavity.
From technique scheme, can find out, the RFID reader structure of the embodiment of the present invention is by arranging barricade between read write line main circuit system and aerial radiation system, this design is divided into two RFID reader structure, by the electromagnetic field of read write line main circuit system and aerial radiation system isolation, retrained to greatest extent the phase mutual interference between read write line main circuit system and aerial radiation system.
The accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, below will the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is the structural representation of the first cavity of embodiment of the present invention RFID reader structure.
Fig. 2 is the phantom view of the first cavity in Fig. 1.
Fig. 3 is the structural representation of the second cavity of embodiment of the present invention RFID reader structure.
Fig. 4 is the structural representation of the barricade of embodiment of the present invention RFID reader structure.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is described in detail, obviously, described embodiment is only the present invention's part embodiment, rather than whole embodiment.Based on the embodiment in the present invention, those of ordinary skills obtain under the prerequisite of not making creative work every other embodiment, belong 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.
Refer to Fig. 1 to shown in Figure 3, described RFID reader structure comprises read write line main circuit system (not shown), the first cavity 1 in order to the read write line main circuit system to be installed, the aerial radiation system (not shown) be connected with the read write line main circuit system and the second cavity 2 in order to fix up an aerial wire radiating system and to be fixed together with the first cavity 1.Described the first cavity 1 and the second cavity 2 adopt aluminum alloy materials, and described the first cavity 1 and the second cavity 2 simple shape, be easy to processing, processing technology can be cutting technology, can be also the extrusion process of mfg. moulding die, and this metal material has certain ELECTROMAGNETIC RADIATION SHIELDING function.
Refer to shown in Figure 4ly, by cable (not shown), be connected between described aerial radiation system and 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 the perforation 31 of passing to connect aerial radiation system and read write line main circuit system for described cable.
Refer to shown in Figure 1, described the first cavity 1 is the rectangular shape of hollow form, described the first cavity 1 comprises first body 11, vertically extend first body 11 the first wall extension 12 and by first body 11 and the first wall extension 12 surround in order to accommodate the first receiving space 13 of read write line main circuit system.Described the first cavity 1 also comprises some the first installation portions 14 that protrude in the first receiving space 13, and described read write line main circuit system is arranged on the first installation portion 14.Described the first installation portion 14 protrudes out in the first receiving space 13 from the middle position near first body 11, in embodiments of the present invention, described the first installation portion 14 comprises four, described four the first installation portions 14 are lined up position two rows of correspondence in twos, and these four the first installation portions 14 are secured together from both sides and the read write line main circuit system of read write line main circuit system respectively.Described the first installation portion 14 is provided with the first threaded hole 141, the both sides of described read write line main circuit system are provided with first through hole corresponding with the first threaded hole 141 positions, and described read write line main circuit system passes the first through hole by screw and screws in the first threaded hole 141 and be secured together with the first installation portion 14.
Refer to Fig. 1 and shown in Figure 4, described the first cavity 1 also comprises the second installation portion 15 that protrudes in the first receiving space 13 and be positioned at four the first installation portion 14 sides, described barricade 3 is arranged on the second installation portion 15, and described read write line main circuit system is between first body 11 and barricade 3.Described the second installation portion 15 also comprises four, these four the second installation portions 15 are separately positioned on the place at four angles of the first cavity 1, described the second installation portion 15 is provided with the second threaded hole 151, described barricade is provided with second through hole 33 corresponding with the second threaded hole 151 positions, and described barricade 3 passes the second through hole 33 by screw and screws in the second threaded hole 151 and be fixed together with the second installation portion 15.Described barricade 3 is provided with the lateral wall 32 around one week of the outside, described barricade 3 be installed to the first cavity 1 interior after, described lateral wall 32 contacts with the inwall of the first wall extension 12.So arrange, 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 the inwall of the first cavity 1, contact to greatest extent, can retrain to greatest extent the phase mutual interference between read write line main circuit system and aerial radiation system.
Refer to shown in Figure 3ly, described the second cavity 2 is also the rectangular shape of hollow form.Described the second cavity 2 comprises the second body 21, vertically extends the second wall extension 22 of the second body 21 and the second receiving space 23 surrounded by the second body 21 and the second wall extension 22.Described the 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 the second wall extension 22 places, and second pair of parallel edges of described radiation window 25 do not extend to the second wall extension 22 places.
Please continue to consult shown in Figure 3, described the second cavity 2 also comprise protrude in the second receiving space 23 the 3rd installation portion 24, described aerial radiation system is arranged on the 3rd installation portion 24.Described the 3rd installation portion 24 comprises three, and these three the 3rd installation portions 24 are arranged on respectively the side of second pair of parallel edges.Described the 3rd installation portion 24 is provided with the 3rd threaded hole 241, described aerial radiation system is provided with the third through-hole corresponding with the 3rd threaded hole 241 positions, and described aerial radiation system is passed third through-hole by screw and screwed in the 3rd threaded hole 241 and be fixed together with the 3rd installation portion 24.Between described radiation window 25 and aerial radiation system, be provided with waterproof plastic plate (not shown).The RFID reader structure of the embodiment of the present invention is mainly to utilize the 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 space.
Between described the first cavity 1 and the second cavity 2, be provided with teflon rubber gasket (not shown), so arrange, can realize the round-the-clock environmental work of RFID reader structure, this RFID reader structure can be indoor, field, work under the rugged environments such as chemical gas.
The RFID reader structure of the embodiment of the present invention is by arranging barricade 3 between read write line main circuit system and aerial radiation system, this design is divided into two RFID reader structure, by the electromagnetic field of read write line main circuit system and aerial radiation system isolation, retrained to greatest extent the phase mutual interference between read write line main circuit system and aerial radiation system.
The RFID reader structure of the embodiment of the present 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, field, work under the rugged environments such as chemical gas.
The first cavity 1 in the RFID reader structure of the embodiment of the present invention and the second cavity 2 adopt aluminum alloy materials, with the injection molding machine shell material of existing 2.45GH reader, compare, be easy to processing, processing technology can be cutting technology, can be also the extrusion process of mfg. moulding die, and this metal material has certain ELECTROMAGNETIC RADIATION SHIELDING function, Electro Magnetic Compatibility is good, can all weather operations, can be operated in and have corrodible chemical gas, in inflammable and explosive rugged surroundings.
To the above-mentioned explanation of the disclosed embodiments, make professional and technical personnel in the field can realize or use the present invention.Multiple modification to these embodiment will be apparent for those skilled in the art, and General Principle as defined herein can be in the situation that do not break away from the spirit or scope of the present invention, realization in other embodiments.Therefore, the present invention will can not be restricted to these embodiment shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.
Claims (8)
1. RFID reader structure, it comprises the read write line main circuit system, in order to the first cavity of read write line main circuit system to be installed, the aerial radiation system be connected with the read write line main circuit system and the second cavity in order to fix up an aerial wire radiating system and to be fixed together with the first cavity, 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, described the first cavity comprises the first body, vertically extend the first body the first wall extension and by first body and the first wall extension surround in order to accommodate the first receiving space of read write line main circuit system, described the first cavity also comprises the first installation portion protruded in the first receiving space, described read write line main circuit system is arranged on the first installation portion, described the first cavity also comprises the second installation portion that protrudes in the first receiving space and be positioned at the first installation portion side, described barricade is arranged on the second installation portion, described read write line main circuit system is between first body and barricade.
2. RFID reader structure according to claim 1, it is characterized in that: between described aerial radiation system and read write line main circuit system, be connected by cable, described barricade is provided with the perforation of passing to connect read write line main circuit system and aerial radiation system for described cable.
3. RFID reader structure according to claim 1, it 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 the first wall extension.
4. RFID reader structure according to claim 1, it is characterized in that: described the second cavity comprises the second body, vertically extends the second wall extension of the second body and the second receiving space surrounded by the second body and the second wall extension, described the second cavity also comprise protrude in the second receiving space the 3rd installation portion, described aerial radiation system is arranged on the 3rd installation portion.
5. RFID reader structure according to claim 4, it is characterized in that: described the second body is provided with the radiation window of perforation, and the electrode of described aerial radiation system is over against this radiation window.
6. RFID reader structure according to claim 5, is characterized in that: be provided with the waterproof plastic plate between described radiation window and aerial radiation system.
7. RFID reader structure according to claim 1, is characterized in that: be provided with the polytetrafluoroethylene sealing gasket circle between described the first cavity and the second cavity.
8. RFID reader structure according to claim 1 is characterized in that: described read write line main circuit system is separately fixed on the first cavity and the second cavity by screw with the aerial radiation system.
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 |
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| 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 |
|---|---|
| CN102262739A CN102262739A (en) | 2011-11-30 |
| CN102262739B true CN102262739B (en) | 2013-11-27 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2011102050459A Active CN102262739B (en) | 2011-07-21 | 2011-07-21 | Radio frequency identification (RFID) reader structure |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| 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 (3)
| 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 |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
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2011
- 2011-07-21 CN CN2011102050459A patent/CN102262739B/en active Active
Patent Citations (3)
| 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 |
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| CN102262739A (en) | 2011-11-30 |
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