CN201540583U - RFID smart antenna - Google Patents
RFID smart antenna Download PDFInfo
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- CN201540583U CN201540583U CN2009202122046U CN200920212204U CN201540583U CN 201540583 U CN201540583 U CN 201540583U CN 2009202122046 U CN2009202122046 U CN 2009202122046U CN 200920212204 U CN200920212204 U CN 200920212204U CN 201540583 U CN201540583 U CN 201540583U
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- 238000004891 communication Methods 0.000 claims abstract description 20
- 230000003321 amplification Effects 0.000 claims description 24
- 238000003199 nucleic acid amplification method Methods 0.000 claims description 24
- 238000004458 analytical method Methods 0.000 claims description 6
- 238000001514 detection method Methods 0.000 abstract 1
- 238000005516 engineering process Methods 0.000 description 4
- 238000009434 installation Methods 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 1
- 238000004883 computer application Methods 0.000 description 1
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Abstract
An RFID smart antenna comprises an antenna unit, a power amplifying unit, a read-write unit, a main communication control unit, an Ethernet power supply unit and an RJ-45 interface, wherein the power amplifying unit is respectively connected with the antenna unit and the read-write unit; the main communication control unit is connected with the read-write unit and the RJ-45 interface, used for carrying out caching on data transferred by the RJ-45 interface and then sending the data to the read-write unit and carries out detection on a bit zone of the received data from the read-write unit, if the bit zone is in an error state, the read-write unit is required to resend the data, and if the bit zone is in a correct state, the data is sent to the RJ-45 interface; and the Ethernet power supply unit is connected with the RJ-45 interface and used for supplying power to the antenna unit, the power amplifying unit, the read-write unit and the main communication control unit. The RFID smart antenna has simple structure and stable performance, and can realize power supply only by fixing the RFID smart antenna at the needed position and connecting a network cable with POE power supply.
Description
Technical field
The utility model relates to the radio frequency technology.
Background technology
Radio-frequency (RF) identification (Radio Frequency Identification, abbreviation RFID) technology is a kind of noncontact automatic identification technology that utilizes radiowave as means of communication, by the automatic recognition objective object of radiofrequency signal and obtain related data, carry out data transmission and processing by computer application system (or computer communication network).Be characterized in and distinguish a plurality of destination objects simultaneously, and bar code can only carry out target recognition one by one.Radio-frequency recognition system is made up of label, read write line, three parts of antenna, its principle of work is: by the radio carrier signal of a characteristic frequency of read write line (Reader) emission, energy is sent to the label (Tag) of the nearly work on-site that is positioned at antenna (Antenna) radiation, activate label (Tag) internal circuit, label (Tag) sends its electronic code (ID Code) and other information then, this signal is received the back decoding by read write line (Reader), sends to computer applied algorithm by data line again and does further processing application.In addition, when label (Tag) carried out exchanges data with read write line (Reader), label (Tag) must be positioned at read write line (Reader) emission near field.
In existing RFID read-write system, reading and writing device antenna (Antenna) has just played the effect of control radio energy emission, is equivalent to radio lens.Reading and writing device antenna (Antenna) links to each other with read write line (reader) by feeder line, need with read write line (reader) cooperating.This structure mainly has the following disadvantages:
1. the uncertainty of feeder system efficient is bigger to RFID read-write system overall work influential effect.Because factors such as the length of feeder line, loss all are that difference according to the actual installation situation changes in actual applications, thereby feeder system efficient is a uncertain factor.And having certain matching relationship between antenna and the signal source, this just decides when the design of antenna, read write line.That is to say, all can influence entire RF ID read-write system overall work effect as long as feeder line efficient is different from the situation of hypothesis actual time.So just the Installation and Debugging to system's reality have proposed very high requirement, and generally debugging person often is difficult to accomplish;
2. system is easier to be used in order to make, and just becomes comparatively complicated as the read write line structure of main signal source, and the equipment cost input increases;
3. installation and maintenance is relatively more difficult.
Summary of the invention
Technical problem to be solved in the utility model is to provide a kind of simple in structure, stable performance, RFID smart antenna easy to use.
The technical scheme that the utility model adopted is: a kind of RFID smart antenna comprises antenna element, power amplification unit, read-write cell, main communication control unit, POE unit and RJ-45 interface; Wherein:
Antenna element is used to transmit and receive radiofrequency signal;
Power amplification unit links to each other with antenna element, is used for carrying out power amplification from the radiofrequency signal of antenna element and read-write cell reception;
Read-write cell, link to each other with power amplification unit, be used for the radiofrequency signal that receives from power amplification unit is carried out demodulation, the data that obtained after the demodulation are carried out sending to described main communication control unit after the format analysis processing, and the data that receive from main communication control unit are carried out modulating after the format analysis processing again, and will modulate the radiofrequency signal that the back produced and send to power amplification unit;
Main communication control unit, link to each other with the RJ-45 interface with read-write cell, the data that are used for that the RJ-45 interface is sent carry out sending to read-write cell behind the buffer memory, and the zone bit of the data that receive from read-write cell detected, if zone bit is an error condition, then require read-write cell to resend this data,, then send the data to the RJ-45 interface if zone bit is a correct status;
The POE unit links to each other with the RJ-45 interface, is used for to antenna element, power amplification unit, read-write cell and the power supply of main communication control unit.
The utility model has the advantages that:
1. behind employing the utility model, can make RFID read-write system designs simplification to the degree of having only a netting twine and optional 1-2 group antenna number, because the factor of all internal system influence read-write effects all can be determined when design, thereby can guarantee that the utility model all is in optimum condition at any time;
2. than traditional RFID read-write system, use of the present utility model is simpler.The user only needs according to the actual requirements, selects the smart antenna of corresponding specification to get final product, and does not require also during debugging that the user grasps too many radio-frequency (RF) radio knowledge;
3. the utility model is as long as the netting twine of connecting band POE power supply just can be realized power supply easily;
4. lower owing to power consumption of the present utility model, thereby can adopt solar cell for supplying power;
5. the structure of the utility model simplification has reduced equipment cost.
Description of drawings
Fig. 1 is a structural principle block diagram of the present utility model.
Embodiment
Below in conjunction with accompanying drawing the utility model is made and to be further specified.
As shown in Figure 1, RFID smart antenna 100 of the present utility model comprises antenna element 1, power amplification unit 2, read-write cell 3, main communication control unit 4, POE unit 5 and RJ-45 interface 6.Wherein, the circuit structure of antenna element, power amplification unit and the read-write cell in antenna element 1, power amplification unit 2 and read-write cell 3 and the existing rfid interrogator is identical.Antenna element 1 is used to transmit and receive radiofrequency signal, realizes transmitting radio energy between this smart antenna and label 7.Power amplification unit 2 links to each other with antenna element 1, is used for carrying out power amplification from the radiofrequency signal of antenna element 1 and read-write cell 3 receptions, and the power amplification multiple can be selected according to actual needs.Read-write cell 3 links to each other with power amplification unit 2, be used for the radiofrequency signal that receives from power amplification unit 2 is carried out demodulation, the data that obtained after the demodulation are carried out sending to main communication control unit 4 after the format analysis processing, and the data that receive from main communication control unit 4 are carried out modulating after the format analysis processing again, the radiofrequency signal that the modulation back is produced sends to power amplification unit 3, realizes reading and writing label information.Main communication control unit 4 links to each other with RJ-45 interface 6 with read-write cell 3 respectively, the data that are used for that RJ-45 interface 6 is sent carry out sending to read-write cell 3 behind the buffer memory, and the zone bit of the data that receive from read-write cell 3 detected, if zone bit is an error condition, then require read-write cell 3 to resend this data, if zone bit is a correct status, then send the data to RJ-45 interface 6.The above-mentioned data that receive from read-write cell are 16 carry system codes of one group of agreement.POE unit 5 links to each other with RJ-45 interface 6, is used for to antenna element 1, power amplification unit 2, read-write cell 3 and 4 power supplies of main communication control unit.RJ-45 interface 6 is connected with POE Ethernet switch 8 by the netting twine of POE power supply.
As long as the utility model is fixed on the position that needs, the netting twine of connecting band POE power supply just can be realized power supply easily.And the PC in the POE network that Ethernet switch connects also can pass through smart antenna, obtains the information of label.
Claims (1)
1. a RFID smart antenna is characterized in that, comprises antenna element, power amplification unit, read-write cell, main communication control unit, POE unit and RJ-45 interface; Wherein:
Antenna element is used to transmit and receive radiofrequency signal;
Power amplification unit links to each other with described antenna element, is used for carrying out power amplification from the radiofrequency signal of described antenna element and the reception of described read-write cell;
Read-write cell, link to each other with described power amplification unit, be used for the radiofrequency signal that receives from power amplification unit is carried out demodulation, the data that obtained after the demodulation are carried out sending to described main communication control unit after the format analysis processing, and the data that receive from described main communication control unit are carried out modulating after the format analysis processing again, and will modulate the radiofrequency signal that the back produced and send to power amplification unit;
Main communication control unit, link to each other with described RJ-45 interface with described read-write cell, the data that are used for that the RJ-45 interface is sent carry out sending to read-write cell behind the buffer memory, and the zone bit of the data that receive from read-write cell detected, if zone bit is an error condition, then require read-write cell to resend this data,, then send the data to the RJ-45 interface if zone bit is a correct status;
The POE unit links to each other with described RJ-45 interface, is used for to antenna element, power amplification unit, read-write cell and the power supply of main communication control unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202122046U CN201540583U (en) | 2009-11-11 | 2009-11-11 | RFID smart antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202122046U CN201540583U (en) | 2009-11-11 | 2009-11-11 | RFID smart antenna |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201540583U true CN201540583U (en) | 2010-08-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202122046U Expired - Fee Related CN201540583U (en) | 2009-11-11 | 2009-11-11 | RFID smart antenna |
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| Country | Link |
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| CN (1) | CN201540583U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103605944A (en) * | 2013-10-21 | 2014-02-26 | 苏州世纪泰鼎电子科技有限公司 | Power-Over-Ethernet (POE) RFID reader power supply device |
| CN107748854A (en) * | 2017-10-27 | 2018-03-02 | 广东康利达物联科技股份有限公司 | A kind of POE powers integrated RFID reader and its communication means |
-
2009
- 2009-11-11 CN CN2009202122046U patent/CN201540583U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103605944A (en) * | 2013-10-21 | 2014-02-26 | 苏州世纪泰鼎电子科技有限公司 | Power-Over-Ethernet (POE) RFID reader power supply device |
| CN107748854A (en) * | 2017-10-27 | 2018-03-02 | 广东康利达物联科技股份有限公司 | A kind of POE powers integrated RFID reader and its communication means |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100804 Termination date: 20131111 |