CN201741168U - Node control device of wireless radio frequency identification system - Google Patents
Node control device of wireless radio frequency identification system Download PDFInfo
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- CN201741168U CN201741168U CN2010202557801U CN201020255780U CN201741168U CN 201741168 U CN201741168 U CN 201741168U CN 2010202557801 U CN2010202557801 U CN 2010202557801U CN 201020255780 U CN201020255780 U CN 201020255780U CN 201741168 U CN201741168 U CN 201741168U
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Abstract
The utility model relates to a node control device of a wireless radio frequency identification system, which comprising an equipment cabinet, a node controller, a data connecting line, an antenna and a cross beam, wherein the antenna is fixed on the equipment cabinet by the cross beam; and the node controller is connected with the antenna by the data connecting line. Compared with the prior art, the node control device of the wireless radio frequency identification system has the advantages of reducing interference among antennas, and the like.
Description
Technical field
The utility model relates to a kind of radio frequency identification system, especially relates to a kind of node control device of radio frequency identification system.
Background technology
RFID is the abbreviation of Radio-Frequency Identification, i.e. radio frequency identification.The RFID radio-frequency (RF) identification is a kind of contactless automatic identification technology, and it is by the automatic recognition objective object of radiofrequency signal and obtain related data, and identification work need not manual intervention, can work in various rugged surroundings.The RFID technology can be discerned high-speed moving object and can discern a plurality of labels simultaneously, and is swift and convenient to operate.
The composition of rfid system is made up of label, antenna, read write line, data transmission middleware and management system etc. usually:
Label (Tag): be made up of coupling element and chip, each label has unique electronic code, attached to identifying destination object on the object.
Reader (Reader): read the equipment of (can also write sometimes) label information, can be designed to hand-held or fixed;
Antenna (Antenna): between label and reader, transmit radiofrequency signal.
Data transmission middleware and management system: middleware is the data that reader collects to be handled according to operation flow send to background system appointed positions (as database); The management system technology realizes friendly system management interface and related data management function according to customer requirement custom-built system management software.
The groundwork flow process of rfid system: reader produces induction current by the radiofrequency signal of emitting antenna transmission certain frequency when radio-frequency card enters the emitting antenna perform region, radio-frequency card obtains energy and is activated; Radio-frequency card sends information such as self coding by blocking built-in transmitting antenna; System's receiving antenna receives the carrier signal of sending from radio-frequency card, is sent to reader through the antenna adjustments device, and reader carries out the demodulation sign indicating number to the signal that receives and delivers to the backstage main system then and carry out relevant treatment; Main system is judged the legitimacy of this card according to logical operation, makes corresponding processing and control at different settings, sends the action of command signal control executing mechanism.
The standard of radio-frequency card:
At present, can ISO10536, ISO14443, ISO15693 and ISO18000 be arranged for several standards that radio-frequency card uses.Using maximum is ISO14443 and ISO15693, and these two standards all are made up of physical characteristics, radio-frequency power and signaling interface, initialization and anticollision and host-host protocol four parts.
According to different modes, radio-frequency card has following several classification:
1. be divided into active card and passive card by power supply mode.Active being meant has battery that power supply is provided in the card, its operating distance is far away, but the life-span is limited, volume is big, cost is high, and is not suitable for working under rugged surroundings; No battery in the passive card, it utilizes the wave beam power supply technique that the radio-frequency (RF) energy that receives is converted into direct supply for blocking interior circuit supply, and the active relatively card of its operating distance is short, but the life-span is long and less demanding to working environment.
2. be divided into low frequency radio frequency card, high-frequency radio frequency card and super high frequency radio frequency card by carrier frequency.The low frequency radio frequency card mainly contains two kinds of 125kHz and 134.2kHz, and high-frequency radio frequency card frequency is mainly 13.56MHz, and the super high frequency radio frequency card is mainly 433MHz, 915MHz, 2.45GHz, 5.8GHz etc.Low frequency card system is mainly used in short distance, uses cheaply, as gate inhibition's control of majority, campus card, animal supervision, cargo tracking etc.High frequency card system is used for gate inhibition's control and needs to transmit the application system of mass data; Ultrahigh frequency card system applies is in needs long decipherment distance and the high-speed occasion of discerning, and its antenna beam direction is narrower and price is higher, uses in systems such as train monitoring, expressway tol lcollection.
3. the difference by modulation system can be divided into active and passive type.The active radio frequency card sends data to read write line on one's own initiative with the radio-frequency (RF) energy of self; The passive radio frequency card uses modulation scattering method emission data, and it must utilize the carrier wave of read write line to modulate the signal of oneself, and such technology is suitable for use in gate inhibition or the traffic application, because read write line can guarantee only to activate the radio-frequency card within the certain limit.Having under the situation of barrier, with the modulation scattering method, the energy of read write line must be made a return journey and be passed barrier twice.And the signal of the radio-frequency card of active mode emission only passes barrier once, so the radio-frequency card of active mode work is mainly used in the application of barrier distance farther (can reach 30 meters).
4. can be divided into close coupling by operating distance closes card (operating distance is less than 1 centimetre), nearly coupling card (operating distance is less than 15 centimetres), loose coupling and closes card (about 1 meter of operating distance) and block (operating distance from 1 meter to 10 meters, even farther) at a distance.
5. be divided into a Card Reader, read-write card and CPU card by chip.
Above-mentioned prior art exists following problem and defective
1) when the RFID technology being applied in telecommunications room rack server orientation management, label need be attached on the metal shell of server, in background technology, this situation can cause the reduction greatly that can't read or read distance of label, can't satisfy system requirements;
2) because the thickness of server standard block is 44.45mm, thereon during adhesive label, equipment room is apart from nearer, and requires decipherment distance far away, interferes with each other between the label, can cause label to read or read rate lower;
3) in rfid system, rfid interrogator one a well matched antenna, read range is 5-10cm, and in should using, cover the height (effectively using height) of a rack 1.8m, need the more equipment of identification, antenna amount is a lot of and spacing is very little, causes antenna interference very big; Antenna is many, system cost is higher, has limited application.
Summary of the invention
The purpose of this utility model is exactly to provide a kind of node control device that reduces the radio frequency identification system that disturbs between the antenna for the defective that overcomes above-mentioned prior art existence.
The purpose of this utility model can be achieved through the following technical solutions:
A kind of node control device of radio frequency identification system, comprise rack, it is characterized in that, also comprise Node Controller, data connecting line, antenna, crossbeam, described antenna is fixed on the rack by crossbeam, and described Node Controller is connected with antenna by data connecting line.
Described Node Controller is 1, and antenna is provided with a plurality of, and each antenna all is connected with Node Controller by data connecting line, and 1 antenna is installed on 1 rack.
Described Node Controller is a microcontroller.
Be provided with analog switch between described Node Controller and the antenna.
Compared with prior art, the utlity model has Node Controller and by the IO expanding element analog switch is carried out gating and end, realize the time-sharing work of antenna, reduce cost, reduce the problem of disturbing between the antenna.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
Embodiment
Below in conjunction with the drawings and specific embodiments the utility model is elaborated.
Embodiment
As shown in Figure 1, a kind of node control device of radio frequency identification system, comprise rack 2, Node Controller 1, data connecting line 5, antenna 3, crossbeam 4, described antenna 3 is fixed on the rack 2 by crossbeam 4, and described Node Controller 1 is connected with antenna 3 by data connecting line 5.Described Node Controller 1 is 1, and antenna 3 is provided with 2, and each antenna 3 all is connected with Node Controller 1 by data connecting line 5, and 1 antenna 3 is installed on 1 rack 2.Described Node Controller 1 is a microcontroller.Be provided with analog switch between described Node Controller 1 and the antenna 3.
Claims (4)
1. the node control device of a radio frequency identification system, comprise rack, it is characterized in that, also comprise Node Controller, data connecting line, antenna, crossbeam, described antenna is fixed on the rack by crossbeam, and described Node Controller is connected with antenna by data connecting line.
2. the node control device of a kind of radio frequency identification system according to claim 1, it is characterized in that described Node Controller is 1, antenna is provided with a plurality of, each antenna all is connected with Node Controller by data connecting line, and 1 antenna is installed on 1 rack.
3. the node control device of a kind of radio frequency identification system according to claim 1 is characterized in that, described Node Controller is a microcontroller.
4. the node control device of a kind of radio frequency identification system according to claim 1 is characterized in that, is provided with analog switch between described Node Controller and the antenna.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202557801U CN201741168U (en) | 2010-07-09 | 2010-07-09 | Node control device of wireless radio frequency identification system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202557801U CN201741168U (en) | 2010-07-09 | 2010-07-09 | Node control device of wireless radio frequency identification system |
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| CN201741168U true CN201741168U (en) | 2011-02-09 |
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| CN2010202557801U Expired - Fee Related CN201741168U (en) | 2010-07-09 | 2010-07-09 | Node control device of wireless radio frequency identification system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102436610A (en) * | 2011-12-13 | 2012-05-02 | 无锡互惠信息技术有限公司 | Data center intelligent management system based on radio frequency identification and method thereof |
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2010
- 2010-07-09 CN CN2010202557801U patent/CN201741168U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102436610A (en) * | 2011-12-13 | 2012-05-02 | 无锡互惠信息技术有限公司 | Data center intelligent management system based on radio frequency identification and method thereof |
| CN102436610B (en) * | 2011-12-13 | 2015-11-18 | 上海互惠信息技术有限公司 | A kind of data center intelligent management system based on radio-frequency (RF) identification and method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20171026 Address after: 200436 Shanghai city Baoshan District Dachang Town Dragon Court No. 294 Patentee after: Zhao Haifeng Address before: 200070 room 912, Gonghe Road, 1303-19, Shanghai, Zhabei District Patentee before: Shanghai Junyue Network Technology Co., Ltd. |
|
| TR01 | Transfer of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110209 Termination date: 20180709 |
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| CF01 | Termination of patent right due to non-payment of annual fee |