CN104331733A - Ultrahigh-frequency RFID label and anti-interference method thereof - Google Patents
Ultrahigh-frequency RFID label and anti-interference method thereof Download PDFInfo
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- CN104331733A CN104331733A CN201410608035.3A CN201410608035A CN104331733A CN 104331733 A CN104331733 A CN 104331733A CN 201410608035 A CN201410608035 A CN 201410608035A CN 104331733 A CN104331733 A CN 104331733A
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Abstract
The invention discloses an ultrahigh-frequency RFID label and an anti-interference method thereof. The label comprises an antenna, a rectifier, an analog front end, a modulator, a demodulator, a digital baseband and a memory. The demodulator is connected between the antenna and the digital baseband; the ultrahigh-frequency RFID label further comprises a control module and a switch; the power supply of the demodulator is connected to the power voltage output by the analog front end by use of the switch; the control module is connected to the digital baseband and the switch so as to control the work of the demodulator according to the working condition of the digital baseband, and therefore, the demodulator is shut down from the moment when the label emits a signal to the moment when the label receives a signal sent by a reader-writer, and the baseband part is stopped from receiving any signal from the demodulator; in other time, the baseband part is turned on to receive signals. The anti-interference of the ultrahigh-frequency RFID label can be effectively improved under the circumstance of increasing almost no any power consumption.
Description
Technical field
The present invention relates to RFID label tag technical field, particularly relate to a kind of ultra-high frequency RFID label and anti-interference method thereof.
Background technology
Ultrahigh frequency RFID (Radio Frequency Identification, radio-frequency (RF) identification) is development in recent years the most a kind of technology in RFID technique, has now obtained the attention of countries in the world government and the favor of scientific research institution.Relative to low frequency and high frequency RFID technique, super high frequency technique has the advantages such as decipherment distance far away (usual decipherment distance >5 rice), recognition speed fast (being greater than 100/second), identifiable design high speed moving target, volume are little.And ultra-high frequency RFID technology telecommunication ability is while bringing its advantage, also bring interference problem.The interference problem stability problem that not only light relates to system also relates to the safety issue of system.At present, the important topic of this area research has been become for the research of the anti-interference of ultrahigh frequency RFID.
What ultrahigh frequency RFID system adopted is based on ASK (Amplitude Shift Keying, amplitude-shift keying) modulation system, and its channel has opening, in its communication process, any air interference mode all may produce interference to rfid system, and this is the basic reason that ultrahigh frequency RFID system is easy to the problem of being interfered.In addition, the energy-provision way of label chip is also the key factor that restriction Anti jamming Scheme realizes.Ultra-high frequency RFID label chip is normally passive, the energy that its internal circuit is launched by receiving read write line, and according to more complicated circuit, the reading/writing distance of label chip will be subject to serious impact.At present, for the anti-interference aspect of ultrahigh frequency RFID not effective especially scheme.
Summary of the invention
For overcoming the deficiency that above-mentioned prior art exists, one of the present invention object is to provide a kind of ultra-high frequency RFID label and anti-interference method thereof, and it effectively can improve the antijamming capability of ultra-high frequency RFID label chip when increasing any power consumption hardly.
For reaching above-mentioned and other object, the present invention proposes a kind of ultra-high frequency RFID label, comprise antenna, rectifier, AFE (analog front end), modulator, detuner, digital baseband, storer, this detuner is connected between this antenna and this digital baseband, this ultra-high frequency RFID label also comprises control module and a switch, this detuner power supply is connected to the supply voltage of this AFE (analog front end) output by this switch, this control module connects this digital baseband and this switch, to control the work of this detuner according to digital baseband working condition.
Further, before this ultra-high frequency RFID label transmits beginning to reception next time read write line transmission signal, keep this digital baseband not receive any signal sent here from this detuner, all open reception At All Other Times.
Further, transmit at this ultra-high frequency RFID label and start to reception next time read write line transmission signal, this detuner cuts out by this switch by this control module.
For achieving the above object, the present invention also provides a kind of anti-interference method of ultra-high frequency RFID label, comprises the steps:
Step one, control module controls the work of detuner according to digital baseband working condition;
Step 2, transmits at this ultra-high frequency RFID label and starts, to reception next time read write line transmission signal, to keep this digital baseband not receive any signal sent here from this detuner, all open reception At All Other Times.
Further, in step 2, transmit at this ultra-high frequency RFID label and start to reception next time read write line transmission signal, this detuner also cuts out by switch control rule by this control module.
Compared with prior art, detuner cuts out before the beginning that transmits sends signal to reception next time read write line by control module abstract factory chip by a kind of ultra-high frequency RFID label of the present invention and anti-interference method thereof, and keep baseband portion not receive any signal sent here from detuner, all opening reception At All Other Times, achieving the object of the antijamming capability effectively improving ultra-high frequency RFID label chip when increasing any power consumption hardly.
Accompanying drawing explanation
Fig. 1 is the system architecture schematic diagram of a kind of ultra-high frequency RFID label of the present invention;
Fig. 2 is the flow chart of steps of the anti-interference method of a kind of ultra-high frequency RFID label of the present invention.
Embodiment
Below by way of specific instantiation and accompanying drawings embodiments of the present invention, those skilled in the art can understand other advantage of the present invention and effect easily by content disclosed in the present specification.The present invention is also implemented by other different instantiation or is applied, and the every details in this instructions also can based on different viewpoints and application, carries out various modification and change not deviating under spirit of the present invention.
Fig. 1 is the system architecture schematic diagram of a kind of ultra-high frequency RFID label of the present invention.As shown in Figure 1, a kind of ultra-high frequency RFID label 100 of the present invention, comprising: antenna 80, rectifier 10, AFE (analog front end) 20, modulator 30, detuner 40, digital baseband 50, switch 60 and control module 70, storer 90.
Wherein, antenna 80 receives and sends radiofrequency signal; Rectifier 10 connects this antenna, is converted to DC voltage with the radio-frequency input signals received by this antenna; AFE (analog front end) 20 connects rectifier 10, and the output voltage of rectifier 10 is carried out voltage stabilizing, clocking and enabling signal etc.; Modulator 30 one end connects digital baseband 50, and the other end connects antenna 80, with the input impedance according to digital baseband signal control system, realizes modulate baseband information on carrier wave; Detuner 40 connects between antenna 80 and digital baseband 50, and to be taken out by the modulation signal in radiofrequency signal, detuner 40 is also connected to the output supply voltage of AFE (analog front end) 20 by switch 60 simultaneously; Control module 70 connects digital baseband 50 and switch 60, to control the work of detuner 40 according to digital baseband working condition, label chip 100 was received before read write line sends signal in beginning to the next time that transmits by switch 60, detuner 40 cuts out, and keep digital baseband 50 not receive any signal sent here from detuner 40, all open reception At All Other Times; Memory module 90 connects digital baseband, stores FRID label information to read information needed when the needs.
Fig. 2 is the flow chart of steps of the anti-interference method of a kind of ultra-high frequency RFID label of the present invention.As shown in Figure 2, the anti-interference method of a kind of ultra-high frequency RFID label of the present invention, comprises the steps:
Step 201, control module controls the work of detuner according to digital baseband working condition;
Step 202, transmits to start to receive to next time before read write line sends signal at label chip and is closed by detuner, and keep baseband portion not receive any signal sent here from detuner, all open reception At All Other Times.
In sum, detuner cuts out before the beginning that transmits sends signal to reception next time read write line by control module abstract factory chip by a kind of ultra-high frequency RFID label anti-interference method of the present invention, and keep baseband portion not receive any signal sent here from detuner, all opening reception At All Other Times, achieving the object of the antijamming capability effectively improving ultra-high frequency RFID label chip when increasing any power consumption hardly.
Compared with prior art, the present invention has following beneficial effect:
1) effectively power consumption is saved: outwards send information at label and start to send before signal during this section to receiving read write line in next time, detuner is in off state, not current sinking.
2) anti-interference strengthens: outwards send information at label and start to send before signal during this section to receiving read write line in next time, detuner is in off state, does not receive extraneous undesired signal.
Above-described embodiment is illustrative principle of the present invention and effect thereof only, but not for limiting the present invention.Any those skilled in the art all without prejudice under spirit of the present invention and category, can carry out modifying to above-described embodiment and change.Therefore, the scope of the present invention, should listed by claims.
Claims (5)
1. a ultra-high frequency RFID label, comprise antenna, rectifier, AFE (analog front end), modulator, detuner, digital baseband, storer, this detuner is connected between this antenna and this digital baseband, it is characterized in that: this ultra-high frequency RFID label also comprises control module and a switch, this detuner power supply is connected to the supply voltage of this AFE (analog front end) output by this switch, this control module connects this digital baseband and this switch, to control the work of this detuner according to digital baseband working condition.
2. a kind of ultra-high frequency RFID label as claimed in claim 1, it is characterized in that: transmitting at this ultra-high frequency RFID label starts to reception next time read write line transmission signal, keep this digital baseband not receive any signal sent here from this detuner, all open reception At All Other Times.
3. a kind of ultra-high frequency RFID label as claimed in claim 2, is characterized in that: transmitting at this ultra-high frequency RFID label starts to reception next time read write line transmission signal, and this detuner cuts out by this switch by this control module.
4. an anti-interference method for ultra-high frequency RFID label, comprises the steps:
Step one, control module controls the work of detuner according to the working condition of digital baseband;
Step 2, transmits to start to receive to next time before read write line sends signal at this ultra-high frequency RFID label and is closed by detuner, and keep this digital baseband not receive any signal sent here from this detuner, all open reception At All Other Times.
5. the anti-interference method of a kind of ultra-high frequency RFID label as claimed in claim 4, it is characterized in that: in step 2, transmitting at this ultra-high frequency RFID label starts to connect to next time before read write line transmits and receives signal, and this detuner cuts out by a switch control rule by this control module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410608035.3A CN104331733A (en) | 2014-10-31 | 2014-10-31 | Ultrahigh-frequency RFID label and anti-interference method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410608035.3A CN104331733A (en) | 2014-10-31 | 2014-10-31 | Ultrahigh-frequency RFID label and anti-interference method thereof |
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| CN104331733A true CN104331733A (en) | 2015-02-04 |
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| CN201410608035.3A Pending CN104331733A (en) | 2014-10-31 | 2014-10-31 | Ultrahigh-frequency RFID label and anti-interference method thereof |
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| CN105868819A (en) * | 2015-02-11 | 2016-08-17 | 天地融科技股份有限公司 | Electronic device |
| CN106934446A (en) * | 2017-04-21 | 2017-07-07 | 中国科学院上海高等研究院 | Suitable for the modulator and its control method of ultra-high frequency RFID label |
| CN112686357A (en) * | 2019-10-17 | 2021-04-20 | 莫冰 | Ultrahigh frequency RFID (radio frequency identification) tag and anti-electromagnetic interference module thereof |
| CN113807481A (en) * | 2020-06-16 | 2021-12-17 | 电装波动株式会社 | Interference suppression device and interference suppression system |
| US20220276393A1 (en) * | 2019-08-01 | 2022-09-01 | The Regents Of The University Of Colorado, A Body Corporate | Inter-Frequency Signal Aiding For Tracking Satellite Navigation Signals |
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| US20070013486A1 (en) * | 2004-01-30 | 2007-01-18 | Toppan Printing Co., Ltd. | Radio frequency identification and communication device |
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Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106203543B (en) * | 2015-02-11 | 2019-03-29 | 天地融科技股份有限公司 | A kind of switching device |
| CN105868819A (en) * | 2015-02-11 | 2016-08-17 | 天地融科技股份有限公司 | Electronic device |
| CN106203197A (en) * | 2015-02-11 | 2016-12-07 | 天地融科技股份有限公司 | A kind of electronic equipment |
| CN106203582A (en) * | 2015-02-11 | 2016-12-07 | 天地融科技股份有限公司 | A kind of electronic equipment |
| CN106203197B (en) * | 2015-02-11 | 2019-03-29 | 天地融科技股份有限公司 | A kind of electronic equipment |
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| CN106934446A (en) * | 2017-04-21 | 2017-07-07 | 中国科学院上海高等研究院 | Suitable for the modulator and its control method of ultra-high frequency RFID label |
| CN106934446B (en) * | 2017-04-21 | 2023-09-15 | 中国科学院上海高等研究院 | Modulator suitable for ultra-high frequency RFID tag and control method thereof |
| US20220276393A1 (en) * | 2019-08-01 | 2022-09-01 | The Regents Of The University Of Colorado, A Body Corporate | Inter-Frequency Signal Aiding For Tracking Satellite Navigation Signals |
| US12117539B2 (en) * | 2019-08-01 | 2024-10-15 | The Regents Of The University Of Colorado | Inter-frequency signal aiding for tracking satellite navigation signals |
| CN112686357A (en) * | 2019-10-17 | 2021-04-20 | 莫冰 | Ultrahigh frequency RFID (radio frequency identification) tag and anti-electromagnetic interference module thereof |
| CN112686357B (en) * | 2019-10-17 | 2023-05-23 | 莫冰 | Ultrahigh frequency RFID tag and anti-electromagnetic interference module thereof |
| CN113807481A (en) * | 2020-06-16 | 2021-12-17 | 电装波动株式会社 | Interference suppression device and interference suppression system |
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Application publication date: 20150204 |