CN103116767B - Radio frequency identification system and radio frequency identification antenna used by the same - Google Patents
Radio frequency identification system and radio frequency identification antenna used by the same Download PDFInfo
- Publication number
- CN103116767B CN103116767B CN201110365460.0A CN201110365460A CN103116767B CN 103116767 B CN103116767 B CN 103116767B CN 201110365460 A CN201110365460 A CN 201110365460A CN 103116767 B CN103116767 B CN 103116767B
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- China
- Prior art keywords
- radio frequency
- rfid
- frequency identification
- antenna
- radiation
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Abstract
The invention provides a radio frequency identification (RFID) antenna which comprises a connecting end and an irradiator which is in connection with the connecting end. The irradiator is made of coaxial cables, and comprises a center copper wire, a plastic insulating layer, a net-shaped conducting layer and a wire outer layer, wherein the center copper wire is sequentially coated by the plastic insulating layer, the net-shaped conducting layer and the wire outer layer. The irradiator is provided with a plurality of irradiating parts, wherein each irradiating part enables the center copper wire to be formed in an external exposed mode through peeling of the wire outer layer, the net-shaped conducting layer and the plastic insulating layer. The invention further provides a radio frequency identification system using the radio frequency identification antenna.
Description
Technical field
The present invention relates to a kind of radio frequency identification（Radio Frequency Identification, RFID）System and
Its RFID antenna having, more particularly to a kind of RFID system with uniform signal radiant intensity and its have
RFID antenna.
Background technology
RFID technique has been widely used in personal management, warehousing management, friendship as a kind of emerging automatic identification technology
The fields such as logical transport.Wherein, when RFID technique being used for into personal management, such as student-directed, it usually needs set on school doorway
The equipment such as RFID antenna are put, when the student with electronic tag is through doorway, rfid interrogator is by RFID antenna and electricity
Subtab carries out the student information stored in radio communication, and reading electronic labels, so as to realize the attendance management to student.
However, in prior art, RFID antenna is generally set up in school doorway, school doorway need to typically arrange mounting bracket
To hang RFID antenna, more inconvenience is installed；In addition, RFID antenna institute radiated signal strength Jing is often not uniform enough, can be effective
The distance of identification electronic tag is shorter, easily forms identification blind area, when student passes through identification blind area through school doorway, RFID
Read write line may recognize the electronic tag worn less than it, cause information gathering not accurate enough.
The content of the invention
For the problems referred to above, it is necessary to provide a kind of convenient installation, and with the RFID antenna of homogeneous radiation signal intensity.
In addition, there is a need to a kind of RFID system using above-mentioned RFID antenna of offer.
A kind of radio frequency identification（Radio Frequency Identification, RFID）Antenna, it includes connection
End and the radiant body being connected with the connection end, the radiant body is made up of coaxial cable, and it includes center copper cash, coats successively in this
The plastic insulation layer of heart copper cash, reticulated conductive layer and electric wire outer layer, and the radiant body is provided with some Departments of Radiation, each Department of Radiation leads to
Cross and peel off the electric wire outer layer of the radiant body, reticulated conductive layer, plastic insulation layer and the center copper cash of making exposes and to be formed.
A kind of radio frequency identification（Radio Frequency Identification, RFID）System, it includes RFID
Read write line, RFID antenna and electronic tag, the rfid interrogator control RFID antenna sends radio frequency signal to electronic tag
Data is read or writes, the RFID antenna includes connection end and the radiant body being connected with the connection end, and the connection end is read with RFID
Write device to be connected, the radiant body is made up of coaxial cable, it includes center copper cash, coats the plastic cement insulation of the center copper cash successively
Layer, reticulated conductive layer and electric wire outer layer, and the radiant body are provided with some Departments of Radiation, and each Department of Radiation is by by the outer layer of radiant body
Electric wire, reticulated conductive layer, plastic insulation layer are peeled off and the center copper cash of making exposes to be formed.
RFID antenna of the present invention can directly be embedded in school doorway, it is therefore not necessary to arrange support, install simple,
And effectively identification is uniform apart from interior radiofrequency signal radiant intensity, dead angle is reduced, collection information is more accurate.
Description of the drawings
Fig. 1 is the schematic diagram of the RFID system of present pre-ferred embodiments；
Fig. 2 is the schematic diagram of the RFID antenna of present pre-ferred embodiments；
Fig. 3 is the sectional view of the RFID antenna of present pre-ferred embodiments；
Fig. 4 and Fig. 5 is the test chart of effective identification distance of the RFID antenna of present pre-ferred embodiments.
Main element symbol description
| RFID system | 100 |
| Rfid interrogator | 10 |
| RFID antenna | 20 |
| Connection end | 21 |
| Radiant body | 23 |
| Center copper cash | 231 |
| Plastic insulation layer | 232 |
| Reticulated conductive layer | 233 |
| Electric wire outer layer | 234 |
| Department of Radiation | 235 |
Following specific embodiment will further illustrate the present invention with reference to above-mentioned accompanying drawing.
Specific embodiment
Fig. 1 is referred to, the RFID system 100 of a preferred embodiment of the present invention includes rfid interrogator 10, RFID antenna 20
And electronic tag 30.The RFID system 100 can be applicable to personal management, in this preferred embodiment, be applied with RFID system 100
It is illustrated as a example by student-directed.
The rfid interrogator 10 and RFID antenna 20 are arranged at school doorway, and the electronic tag 30 is worn by student.Should
The control of rfid interrogator 10 RFID antenna 20 sends radio frequency signal and electronic tag 30 is read or write data.
Fig. 2 and Fig. 3 is seen also, the RFID antenna 20 includes connection end 21 and radiant body 23.The connection end 21 with
Rfid interrogator 10 is connected.
The radiant body 23 can be made up of existing coaxial cable, and it includes center copper cash 231 and coats the center copper cash
231 plastic insulation layer 232, reticulated conductive layer 233 and electric wire outer layer 234.The radiant body 23 is provided with some Departments of Radiation 235.
Each Department of Radiation 235 is by peeling off and making the electric wire outer layer 234 of radiant body 23, reticulated conductive layer 233, plastic insulation layer 232
Center copper cash 231 exposes to be formed.According to the principle of coaxial stripline, the center copper cash 231 of the exposed portion is the phase of Department of Radiation 235
When in a microstrip antenna, can outwardly sending radio frequency signal.In addition, RFID antenna 20 sends radio frequency signal being set
It is set to along the direction away from connection end 21 and gradually weakens, therefore, the density of setting of Department of Radiation 235 is along away from even in the present embodiment
Connecing the direction at end 21 gradually increases, that is, makes the quantity or area of the part for exposing center copper cash 231 of radiant body 23 gradually
Increase, so as to strengthen its signal radiant intensity, make whole piece radiant body 23 obtain more uniform RF identification effect.
Fig. 4 and Fig. 5 is seen also, in this preferred embodiment, the length of radiant body 23 is about 6 meters.When label
Radiant power is 0dbm, and rfid interrogator 10 is capable of identify that effective identification of electronic tag 30 apart from about by RFID antenna 20
For 16.5m.When the radiant power of label is -0.5dbm, rfid interrogator 10 is capable of identify that electronic tag by RFID antenna 20
30 effective identification distance about 6.5m.It is appreciated that effective identification distance of the RFID antenna 20 can be according to the actual requirements
It is adjusted to arranging the parameter of rfid interrogator 10.
The electronic tag 30 includes a RFID chip, and it can store the information of student, such as name, student number etc..When wearing band
Have the student of electronic tag 30 near RFID antenna 20, reach effectively identification apart from when, rfid interrogator 10 just may be read into electricity
The information stored in subtab 30.
RFID antenna of the present invention 20 can directly be embedded in school doorway, it is therefore not necessary to arrange support, install letter
It is single, and effectively identification is uniform apart from interior radiofrequency signal radiant intensity, reduces dead angle, collection information is more accurate.
Claims (4)
1. a kind of radio frequency identification (Radio Frequency Identification, RFID) antenna, it includes connection end
And the radiant body being connected with the connection end, it is characterised in that：The radiant body is made up of coaxial cable, it include center copper cash, according to
The secondary plastic insulation layer for coating the center copper cash, reticulated conductive layer and electric wire outer layer, and the radiant body is provided with some Departments of Radiation, often
One Department of Radiation by by the electric wire outer layer of the radiant body, reticulated conductive layer, plastic insulation layer is peeled off and the center copper cash of making exposes shape
Into each Department of Radiation is equivalent to a microstrip antenna.
2. radio frequency identification (Radio Frequency Identification, RFID) antenna as claimed in claim 1,
It is characterized in that：The density of setting or area of the Department of Radiation gradually increases along the antenna to the direction away from connection end.
3. a kind of radio frequency identification (Radio Frequency Identification, RFID) system, it includes that RFID reads
Device, RFID antenna and electronic tag are write, the rfid interrogator control RFID antenna sends radio frequency signal and electronic tag is read
Take or write data, the RFID antenna includes connection end and the radiant body being connected with the connection end, the connection end and RFID read-write
Device is connected, it is characterised in that：The radiant body is made up of coaxial cable, and it includes center copper cash, coats the center copper cash successively
Plastic insulation layer, reticulated conductive layer and electric wire outer layer, and the radiant body is provided with some Departments of Radiation, each Department of Radiation will be by radiating
The outer layer electric wire of body, reticulated conductive layer, plastic insulation layer are peeled off and the center copper cash of making exposes to be formed, and each Department of Radiation is equivalent to one
Microstrip antenna.
4. radio frequency identification (Radio Frequency Identification, RFID) system as claimed in claim 3,
It is characterized in that：The Department of Radiation density of setting or area gradually increase along the antenna to the direction away from connection end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110365460.0A CN103116767B (en) | 2011-11-17 | 2011-11-17 | Radio frequency identification system and radio frequency identification antenna used by the same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110365460.0A CN103116767B (en) | 2011-11-17 | 2011-11-17 | Radio frequency identification system and radio frequency identification antenna used by the same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103116767A CN103116767A (en) | 2013-05-22 |
| CN103116767B true CN103116767B (en) | 2017-05-03 |
Family
ID=48415139
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110365460.0A Expired - Fee Related CN103116767B (en) | 2011-11-17 | 2011-11-17 | Radio frequency identification system and radio frequency identification antenna used by the same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103116767B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10062591A1 (en) * | 1999-12-16 | 2001-06-21 | Andrew Ag Zuerich | Radiating coaxial cable for use in radio communication system, has axially aligned spiral slits which are provided at specific inclined angle, on circumference of outer conductor |
| CN1434547A (en) * | 2003-03-12 | 2003-08-06 | 郑兆翁 | Indoor antenna array for radio signal distribution system |
| CN2610508Y (en) * | 2003-03-12 | 2004-04-07 | 郑兆翁 | Indoor aerial array |
| JP2007243821A (en) * | 2006-03-10 | 2007-09-20 | Toshiba It & Control Systems Corp | Wireless tag movement detection system |
| CN102195135A (en) * | 2010-02-03 | 2011-09-21 | 株式会社日立制作所 | Low/high frequency shared leakage antenna, base station apparatus and close-range detection system using the antenna |
-
2011
- 2011-11-17 CN CN201110365460.0A patent/CN103116767B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10062591A1 (en) * | 1999-12-16 | 2001-06-21 | Andrew Ag Zuerich | Radiating coaxial cable for use in radio communication system, has axially aligned spiral slits which are provided at specific inclined angle, on circumference of outer conductor |
| CN1434547A (en) * | 2003-03-12 | 2003-08-06 | 郑兆翁 | Indoor antenna array for radio signal distribution system |
| CN2610508Y (en) * | 2003-03-12 | 2004-04-07 | 郑兆翁 | Indoor aerial array |
| JP2007243821A (en) * | 2006-03-10 | 2007-09-20 | Toshiba It & Control Systems Corp | Wireless tag movement detection system |
| CN102195135A (en) * | 2010-02-03 | 2011-09-21 | 株式会社日立制作所 | Low/high frequency shared leakage antenna, base station apparatus and close-range detection system using the antenna |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103116767A (en) | 2013-05-22 |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170503 Termination date: 20171117 |