CN102024174A - Radio frequency identification (RFID) tag chip and RFID tag - Google Patents
Radio frequency identification (RFID) tag chip and RFID tag Download PDFInfo
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- CN102024174A CN102024174A CN 201010604340 CN201010604340A CN102024174A CN 102024174 A CN102024174 A CN 102024174A CN 201010604340 CN201010604340 CN 201010604340 CN 201010604340 A CN201010604340 A CN 201010604340A CN 102024174 A CN102024174 A CN 102024174A
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Abstract
The invention discloses a radio frequency identification (RFID) tag chip and an RFID tag, wherein the RFID tag comprises an antenna, a filter and the RFID tag chip with a radio frequency detection module; the antenna is connected with the filter; the filter is connected with the RFID tag chip; and the radio frequency detection module in the RFID tag chip is directly connected with the antenna. The RFID tag chip is used to improve antijamming capability of the RFID tag chip, and is applied to mobile communication industry with a large area, in particular to effect detection of areas covered by mobile signals, fixed asset inventory and the like.
Description
Technical field
The present invention relates to a kind of RFID application, in particular a kind of RFID label chip and RFID label.
Background technology
The inner principle of the passive RFID tags that exists on the market as shown in Figure 1 at present.Described passive RFID tags comprises RFID label chip and label antenna or coil, and it utilizes the communication between inductive coupling or realization of electromagnetic backscatter coupling principle and the read write line.Described RFID label chip mainly is made up of analog radio frequency unit, DCU data control unit and EEPROM storage unit three parts, analog radio frequency unit mainly realizes functions such as power supply generation, modulating/demodulating, clock generating, electrification reset, for IC provides burning voltage, and offering the DCU data control unit processing after the data demodulates that will obtain, the data that DCU data control unit is handled return to read write line after modulating simultaneously.Digital control unit is being controlled the flow direction of label internal data, and according to the instruction that receives, the control label carries out state exchange, stores and return needed content, comprises functions such as command analysis, digital coding, data storage, read/write.
But existing passive RFID tags does not detect inductor because inside is provided with radio-frequency power, causes expanding using mobile communications industry; The existing RFID label of cause does not have inhibit feature to the 2G frequency of present use, and former RFID label is vulnerable to disturb, and causing can't normal communication.
Therefore, prior art has yet to be improved and developed.
Summary of the invention
The object of the present invention is to provide a kind of RFID label chip and RFID label, be intended to solve existing RFID label because inside is not provided with radio-frequency power and detect inductor, cause to expand the problem that uses mobile communications industry.
Technical scheme of the present invention is as follows:
A kind of RFID label chip, comprise analog radio frequency unit, DCU data control unit and storage unit, described analog radio frequency unit, DCU data control unit and storage unit are connected successively, wherein, described analog radio frequency unit comprises supply module, radio frequency detection module, demodulation module and modulation module, and described supply module, radio frequency detection module, demodulation module and modulation module all are connected to the Data Control module.
Described RFID label chip, wherein, described storage unit is 32 EEPROM.
A kind of RFID label comprises RFID label chip and antenna, wherein, also comprise a wave filter, described antenna connects described wave filter, and described wave filter connects described RFID label chip, and the radio frequency detection module in the described RFID label chip directly connects described antenna.
Described RFID label, wherein, described wave filter is set to sheet type.
Beneficial effect of the present invention: the present invention detects inductor by existing RFID label is inserted radio-frequency power, promote its antijamming capability simultaneously,, take inventory etc. in mobile communications industry with large-area applications especially for movable signal overlay area effect detection, capital assets.
Description of drawings
Fig. 1 is existing passive RFID tags structural representation;
Fig. 2 is the structural representation of the RFID label that provides of the embodiment of the invention one;
Fig. 3 is the structural representation of RFID label chip provided by the invention;
Fig. 4 is the structural representation of the RFID label that provides of the embodiment of the invention two.
Embodiment
For making purpose of the present invention, technical scheme and advantage clearer, clear and definite, below develop simultaneously with reference to accompanying drawing that the present invention is described in more detail for embodiment.
As shown in Figure 2, a kind of RFID label that the embodiment of the invention one provides, it comprises RFID label chip and antenna.According to the principle analysis of existing passive RFID label,, before the double dipole antenna is introduced the RFID label chip, a wave filter is set in order to promote its antijamming capability.Described antenna connects described wave filter, and described wave filter connects described RFID label chip.
Wherein, the bandwidth of described wave filter is made corresponding the adjustment according to the frequency of former compartment system.When being the GSM network as compartment system, bandwidth is decided to be 840 ~ 842MHz; When being cdma network as compartment system, bandwidth is decided to be 920 ~ 922MHz.The outer inhibition of the band of described wave filter is set to outside the bandwidth edge 5MHz inhibition degree〉30dB; The volume requirement of described wave filter is as far as possible little, and is thin as far as possible.
So just the influence of former compartment system can be reduced to minimum, can obviously the RFID communication sensitivity be promoted about 6 ~ 8dB.
In order to allow the RFID label possess the radio-frequency power monitoring function, must go into the radio frequency detecting circuit in that former RFID label chip is mid-, specifically see shown in Figure 3.It comprises: analog radio frequency unit, DCU data control unit and storage unit, described analog radio frequency unit, DCU data control unit and storage unit are connected successively.Wherein, described analog radio frequency unit comprises supply module, radio frequency detection module, demodulation module and modulation module, and described radio frequency detection module is connected directly to antenna.Described storage unit is the 32bit(position) EEPROM.
Its principle of work is as follows: receive the pilot signal of former compartment system from the double dipole antenna, enter newly-increased radio frequency detection module.Because original double dipole beamwidth of antenna is 860 ~ 960MHz, therefore need not change and just can receive GSM or CDMA signal.Because antenna has divided two branches, the one tunnel gives radio frequency detection module, and another road goes out the activated with energy label for the power circuit detection through wave filter, so need readjust antenna-matching circuit, guarantees that antenna performance is unaffected.
With the minimum power that triggers label chip work and voltage and the original reference voltage of chip internal is benchmark, characteristic according to the radio frequency detecting circuit is the linear value α of radio-frequency power value and detecting circuit, calculates the pairing performance number of original reference voltage in the label chip.If: Vref is original reference voltage in the label chip; Pref is the dBm value of reference voltage correspondence; Vmin is the minimum trigger voltage of label chip; Pmin is the dBm value of minimum trigger voltage correspondence.Then:
Pref?=?Pmin-α(Vmin-Vref)
Generally speaking, Vmin〉Vref.
Radio frequency detection module output voltage is converted to performance number by the following method: suppose that Vo is a radio frequency detection module output voltage; Po is the radio-frequency power value, the dBm of unit; Then:
Po?=?Pref?+α(Vo-Vref)
Under the normal condition, Vo〉Vmin〉Vref.
The Po value of gathering in real time and obtaining is stored among the EEPROM, returns when the system for the treatment of takes inventory.
Referring to Fig. 4, at above-mentioned RFID label chip, the embodiment of the invention two provides a kind of new RFID label, it comprises RFID label chip, wave filter and the antenna that is provided with radio frequency detection module, wherein, described antenna connects wave filter, and described wave filter connects described RFID label chip, and the radio frequency detection module in the described RFID label chip connects described antenna.
For the ease of using on antenna, RFID net supervision of bidding is signed and need be set to thin slice, and flexibility will get well, and guarantees to stick on the object difficult drop-off.Overall appearance requires with the papery trade mark of antenna generally big or small, is approximately the size of 5-15 square centimeter.
RFID label provided by the invention is integrated RF power testing circuit and a passive filter in existing cheap RFID label, and performance and cost that it not only can significantly not change former label also can be applicable to huge mobile communication market; But described RFID net supervision of bidding is signed sensitive paper matter trade mark and equally is attached on the antenna, and is extremely easy to use; But each net supervision of bidding is signed inside writing position information, to provide accurately, to locate timely.
Should be understood that application of the present invention is not limited to above-mentioned giving an example, for those of ordinary skills, can be improved according to the above description or conversion that all these improvement and conversion all should belong to the protection domain of claims of the present invention.
Claims (4)
1. RFID label chip, comprise analog radio frequency unit, DCU data control unit and storage unit, described analog radio frequency unit, DCU data control unit and storage unit are connected successively, it is characterized in that, described analog radio frequency unit comprises supply module, radio frequency detection module, demodulation module and modulation module, and described supply module, radio frequency detection module, demodulation module and modulation module all are connected to the Data Control module.
2. RFID label chip according to claim 1 is characterized in that, described storage unit is 32 EEPROM.
3. RFID label, comprise described RFID label chip of claim 1 and antenna, it is characterized in that, also comprise a wave filter, described antenna connects described wave filter, described wave filter connects described RFID label chip, and the radio frequency detection module in the described RFID label chip directly connects described antenna.
4. RFID label according to claim 3 is characterized in that described wave filter is set to sheet type.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010604340 CN102024174A (en) | 2010-12-24 | 2010-12-24 | Radio frequency identification (RFID) tag chip and RFID tag |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010604340 CN102024174A (en) | 2010-12-24 | 2010-12-24 | Radio frequency identification (RFID) tag chip and RFID tag |
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| Publication Number | Publication Date |
|---|---|
| CN102024174A true CN102024174A (en) | 2011-04-20 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201010604340 Pending CN102024174A (en) | 2010-12-24 | 2010-12-24 | Radio frequency identification (RFID) tag chip and RFID tag |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105574581A (en) * | 2015-07-22 | 2016-05-11 | 广州中国科学院沈阳自动化研究所分所 | Portable low-power-dissipation tag used for real-time positioning system and positioning method based on tag |
| CN106650902A (en) * | 2016-11-28 | 2017-05-10 | 厦门英诺尔电子科技股份有限公司 | RFID (Radio Frequency Identification) chip and RFID tag |
| CN110738807A (en) * | 2019-09-24 | 2020-01-31 | 广州市昊鑫计算机科技有限公司 | RFID electronic tags for intelligent retail |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2006059818A1 (en) * | 2004-11-30 | 2006-06-08 | Woory Industrial Company, Ltd. | Car navigation system and method using rfid card |
| CN101206721A (en) * | 2006-12-15 | 2008-06-25 | 株式会社日立制作所 | Radio frequency identification device |
-
2010
- 2010-12-24 CN CN 201010604340 patent/CN102024174A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2006059818A1 (en) * | 2004-11-30 | 2006-06-08 | Woory Industrial Company, Ltd. | Car navigation system and method using rfid card |
| CN101206721A (en) * | 2006-12-15 | 2008-06-25 | 株式会社日立制作所 | Radio frequency identification device |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105574581A (en) * | 2015-07-22 | 2016-05-11 | 广州中国科学院沈阳自动化研究所分所 | Portable low-power-dissipation tag used for real-time positioning system and positioning method based on tag |
| CN106650902A (en) * | 2016-11-28 | 2017-05-10 | 厦门英诺尔电子科技股份有限公司 | RFID (Radio Frequency Identification) chip and RFID tag |
| CN106650902B (en) * | 2016-11-28 | 2023-08-29 | 厦门英诺尔电子科技股份有限公司 | RFID chip and RFID label |
| CN110738807A (en) * | 2019-09-24 | 2020-01-31 | 广州市昊鑫计算机科技有限公司 | RFID electronic tags for intelligent retail |
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Application publication date: 20110420 |
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