CN101582122A - Active RFID system with awakening function - Google Patents
Active RFID system with awakening function Download PDFInfo
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- CN101582122A CN101582122A CNA2009100536291A CN200910053629A CN101582122A CN 101582122 A CN101582122 A CN 101582122A CN A2009100536291 A CNA2009100536291 A CN A2009100536291A CN 200910053629 A CN200910053629 A CN 200910053629A CN 101582122 A CN101582122 A CN 101582122A
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Abstract
The invention discloses an active RFID system with an awakening function, comprising a reader, electric tags and an exciter, wherein the exciter is controlled to emit activation signals to work areas, if the electric tags receive the activation signals in the process of interception, the electric tags transmit data to the reader, if not, the electric tags remain in a sleeping mode; the reader carries out decoding processing after receiving the data transmitted by the electric tags; the electric tags receive the activation signals emitted by the exciter at set time intervals; after finishing transmitting data to the reader, the electric tags continue to intercept the activation signals emitted by the exciter. The active electric tags do not emit electromagnetic wave signals to the outside in normal times and can automatically identify whether the situation is work occasions or not, if the electric tags are in work occasions, the tags emit electromagnetic wave signals and operate normally, if the electric tags are not in work occasions, the tags close the emission of the electromagnetic wave signals, thus not affecting circumferential environment.
Description
Technical field
The invention belongs to radio frequency and set (Radio Frequency Identification is called for short RFID) technical field, particularly a kind of active RFID system with arousal function.
Background technology
General active RFID arrangement for reading is made up of active RFID electronic label and RFID reader at present, the active RFID electronic label is continual with certain frequency (as: per second 2～3 times) electromagnetic signals towards periphery continuously, the RFID reader is analyzed decoding after receiving these electromagnetic waves as receiver, translate content corresponding, the rfid card that decoding is obtained number is sent to the backstage computer again, reaches the function of wireless reading RFID with this.
Because all external all the time electromagnetic signals of active RFID electronic label can produce certain influence to surrounding environment, has just run into the problem of application facet in some specific occasion.Such as at aviation field in order to ensure the safety of flight, just strictly forbid in medical field, also electromagnetic emission being had certain restriction in addition by the external launching electromagnetic wave of the article that transported.In the postal field transportation of mail some relate to air transportation, therefore electronic product is had clear and definite requirement, can not have the labile factor of disturbing aviation safety, promptly electronic tag can not outside always aboard launching electromagnetic wave.And general RFID arrangement for reading just can not address that need, and they can not be applied to easily secure context be caused adverse influence in such environment, can't be by the approval of relevant departments.
Summary of the invention
The purpose of this invention is to provide a kind of active RFID system, solve existing common active RFID reader no matter whether be in all continual outside launching electromagnetic wave in workplace, the problem that under some specific occasion, can't use with arousal function.
Technical scheme of the present invention is, a kind of active RFID system with arousal function, comprise reader and electronic tag, it is characterized in that, also comprise driver, wherein, described driver is controlled to perform region emission activation signal, and described electronic tag then sends data to described reader if receive described activation signal in intercepting.
Described electronic tag then is not in dormant state by described activation signal if receive in intercepting.
Described reader carries out decoding processing after receiving the data that described electronic tag sends.
Described electronic tag receives described driver activation signals emitted with Fixed Time Interval.
Described electronic tag continues to intercept described driver activation signals emitted after described reader sends data.
Technical solution of the present invention is that beneficial effect is to make active electronic label external electromagnetic signals at ordinary times, only launching electromagnetic wave just in the particular job scope.Electronic tag can tell whether be in the workplace automatically, carries out work in the workplace normally with regard to launching electromagnetic wave, just closes electromagnetic emission when being in the inoperative occasion, surrounding environment is not impacted.
Description of drawings
Fig. 1 is the block diagram of system of the present invention
The driver workflow diagram of Fig. 2 one embodiment of the invention
The electronic tag workflow diagram of Fig. 3 one embodiment of the invention
The reader workflow diagram of Fig. 4 one embodiment of the invention
The system works ultimate principle figure that Fig. 5 one embodiment of the invention is described
Embodiment
Below in conjunction with accompanying drawing the specific embodiment of the present invention is described further.
Active RFID system with arousal function of the present invention, as shown in Figure 1, comprise reader and electronic tag and comprise driver, wherein, driver is controlled to perform region emission activation signal, electronic tag in intercepting if receive that activation signal is then to the transmission data of reader.Electronic tag then is not in dormant state by activation signal if receive in intercepting.Reader carries out decoding processing after receiving the data that electronic tag sends.Electronic tag receives the driver activation signals emitted with Fixed Time Interval.Electronic tag continues to intercept the driver activation signals emitted after reader sends data.Promptly, driver is used for the active RFID electronic label that is in the workplace is activated, allow electronic tag operate as normal after activating again, in case can't receive the pumping signal that driver sends and the active RFID electronic label has gone out the workplace, just will close external electromagnetic wave emission, be in " dormancy " state.Specifically, the used core high frequency chip of active RFID system generally has " reception " and " transmission " two functions, electronic tag in the common active RFID system adopts " transmission " function wherein, outwards launching electromagnetic wave transmits electromagnetic riveting machine signal information, and reader adopts " reception " function wherein, the reception electromagnetic wave is also decoded, and analyzes concrete information.Driver of the present invention, its function is the more powerful pumping signal of continual outside emission (intensity of power meets the relevant regulations of country), and the mode of operation of active RFID electronic label changes becomes the work of not only carrying out " emission " but also doing " reception ".Electronic tag is every the electromagnetic wave of a driver emission of certain time interval " reception ", and we are called " intercepting " this process.If in a single day electronic tag has found the driver electromagnetic wave signal of special frequency channel particular form in this process, just can judge and enter normal workplace, so electronic tag begins outside electromagnetic signals, the RFID reader that is installed in the workplace just can receive normally electronic tag signal (the present invention does not make essence at RFID reader end and changes, and is the same with common active RFID reader).Electronic tag enters " intercepting " state once more after having launched certain hour or certain number of times, if heard pumping signal again, continue electromagnetic signals so, otherwise can't hear pumping signal, promptly judge the scope that has exceeded the operate as normal occasion, not external launching electromagnetic wave.By the running of this pattern, electronic tag of the present invention only just can external launching electromagnetic wave in the workplace, is not in " dormancy " state when the workplace, external launching electromagnetic wave.
As shown in Figure 2, realize the workflow diagram of driver, the present invention uses " transmissions " function of radio frequency chip, and employing externally fed mode is not considered electric quantity consumption, outwards launches pumping signal with quite high frequency (per second 3000 times frequency) basically.The frequency of emission is high more, the duration that electronic tag is received pumping signal is just short more, the duration of " intercepting " just can be short more, helps electronic tag like this and save electric weight (electronic tag adopts inner dry cell power supply, must consider the problem of electric weight).Specifically can reach how high transmission frequency also needs to decide according to the ability and the characteristic of radio frequency chip, the nrf2401 radio frequency chip that uses in the practice test can be stable when per second 3000 times work, so through calculating, the cycle of an average pumping signal is exactly about 300us, intercepts the duration according to sampling principle electronic tag single and should be not less than 2 times excitation signal cycle and just say about 600us.
As shown in Figure 3, realize the workflow diagram of electronic tag, electronic tag has " reception " and " transmission " two functions, and " reception " function is responsible for the pumping signal whether " intercepting " exists the driver emission on every side.In case found pumping signal, just the rfid card of itself number gone out by antenna " transmission ".Because the dry cell power supply that active electronic label adopts, electric weight is limited, so must consider to save the problem of electric weight.Analysis can be reached a conclusion, and " intercepting " duration that electronic tag adopts should be no less than 600us at every turn, and the frequency of " intercepting " then will and be saved between the electric weight and do a balance according to the reality requirement.Specifically, from saving the electric weight angle, " intercepting " frequency of electronic tag is low more good more, and per second " is intercepted " per two seconds " intercepting " power consumption of once comparing and just turned over some.But, frequency is low more also must guarantee electronic tag by the perform region during this period of time in electronic tag must " intercept " and arrive pumping signal, otherwise, electronic tag " leakage " has been crossed pumping signal just can outwards not launch electromagnetic signal, can't operate as normal.Summary is got up, and saves electric weight guaranteeing to finish the frequency that reduces " intercepting " under the prerequisite of function more as far as possible exactly.
Reader workflow diagram as shown in Figure 4, realize this function, reader uses " reception " function, it adopts externally fed not consider the problem of electric weight, be in " reception " state after powering on, in case catch the work that the electromagnetic wave of electronic tag emission just carries out demodulation and decoding always.Behind the rfid card that obtains electronic tag number, it is sent to the backstage computer.This part of functions is consistent with common reader, basic not change.
Below enumerate the electronic label identification course of work of a RFID, as shown in Figure 5,, intercept the pumping signal of sending less than driver, externally do not launch electromagnetic signal when electronic tag is in inoperative zone A.When electronic tag has entered perform region B, listen to suitable pumping signal, to reader emission electromagnetic signal.(intercept once more behind emission a period of time or the number of times, listened to pumping signal again, continue the emission electromagnetic signal, as long as electronic tag is in the perform region, this process moves in circles).When electronic tag leaves the perform region, enter inoperative zone C, intercept less than pumping signal, close emission switch and no longer launch electromagnetic signal.
Claims (5)
1, a kind of active RFID system with arousal function, comprise reader and electronic tag, it is characterized in that, also comprise driver, wherein, described driver is controlled to perform region emission activation signal, and described electronic tag then sends data to described reader if receive described activation signal in intercepting.
2, have the active RFID system of arousal function according to claim 1, it is characterized in that, described electronic tag then is not in dormant state by described activation signal if receive in intercepting.
3, have the active RFID system of arousal function according to claim 1, it is characterized in that, described reader carries out decoding processing after receiving the data that described electronic tag sends.
4, have the active RFID system of arousal function according to claim 1, it is characterized in that, described electronic tag receives described driver activation signals emitted with Fixed Time Interval.
5, have the active RFID system of arousal function according to claim 1, it is characterized in that, described electronic tag continues to intercept described driver activation signals emitted after described reader sends data.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2009100536291A CN101582122A (en) | 2009-06-23 | 2009-06-23 | Active RFID system with awakening function |
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| CNA2009100536291A CN101582122A (en) | 2009-06-23 | 2009-06-23 | Active RFID system with awakening function |
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101923630A (en) * | 2010-09-07 | 2010-12-22 | 杭州中瑞思创科技股份有限公司 | Two-way communication protective method and system of object |
| WO2011063572A1 (en) * | 2009-11-30 | 2011-06-03 | 西安西谷微功率数据技术有限责任公司 | Active electronic tag, application system and method thereof |
| CN102222258A (en) * | 2011-05-18 | 2011-10-19 | 复旦大学无锡研究院 | Ultra-low-power-consumption intelligent wireless sensor tag for intelligent package |
| CN102523020A (en) * | 2011-09-23 | 2012-06-27 | 高飞 | Electromagnetic awakening method without power supply and implementing device |
| CN102096836B (en) * | 2009-12-09 | 2013-04-10 | 国民技术股份有限公司 | Radio frequency device, radio frequency card reader and related communication system and communication method |
| CN103179648A (en) * | 2013-03-11 | 2013-06-26 | 浙江大学 | A low-power personnel area positioning method based on multi-sensor cooperation |
| CN103198277A (en) * | 2013-03-11 | 2013-07-10 | 浙江大学 | Low-power-consumption active-type RFID area locating method of whole network devices |
| CN104036603A (en) * | 2014-06-04 | 2014-09-10 | 深圳市中兴新地通信器材有限公司 | Active RFID identity recognition device as well as energy-saving method and energy-saving security system thereof |
| CN104182776A (en) * | 2014-08-06 | 2014-12-03 | 成都九洲电子信息系统股份有限公司 | A method for reducing power consumption of a 2.45GHz active tag meeting a national military protocol |
| CN106355241A (en) * | 2016-11-15 | 2017-01-25 | 紫光智云(江苏)物联网科技有限公司 | Active electronic tag activated by adopting magnetically controlled switch |
| CN110659531A (en) * | 2018-09-26 | 2020-01-07 | 湖北用芯物联科技有限公司 | Semi-active RFID electronic label system and method |
| CN111950307A (en) * | 2020-07-02 | 2020-11-17 | 广东易理铺智能科技有限公司 | Electronic price tag awakening system and method based on electromagnetic signals |
| CN114822009A (en) * | 2022-05-19 | 2022-07-29 | 深圳猎吧科技有限公司 | Shared electric bicycle parking system and parking method based on RFID technology |
-
2009
- 2009-06-23 CN CNA2009100536291A patent/CN101582122A/en active Pending
Cited By (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011063572A1 (en) * | 2009-11-30 | 2011-06-03 | 西安西谷微功率数据技术有限责任公司 | Active electronic tag, application system and method thereof |
| US9070061B2 (en) | 2009-11-30 | 2015-06-30 | Westvalley Digital Technologies, Inc. | Method and system for applying an active radio frequency identification (RFID) tag having a first filter to exclude invalid signals and a second filter to perform a validity judgment |
| CN102096836B (en) * | 2009-12-09 | 2013-04-10 | 国民技术股份有限公司 | Radio frequency device, radio frequency card reader and related communication system and communication method |
| CN101923630A (en) * | 2010-09-07 | 2010-12-22 | 杭州中瑞思创科技股份有限公司 | Two-way communication protective method and system of object |
| CN102222258A (en) * | 2011-05-18 | 2011-10-19 | 复旦大学无锡研究院 | Ultra-low-power-consumption intelligent wireless sensor tag for intelligent package |
| CN102523020A (en) * | 2011-09-23 | 2012-06-27 | 高飞 | Electromagnetic awakening method without power supply and implementing device |
| CN103198277B (en) * | 2013-03-11 | 2015-07-29 | 浙江大学 | A kind of active rfid area positioning method of whole network equipment low-power consumption |
| CN103179648A (en) * | 2013-03-11 | 2013-06-26 | 浙江大学 | A low-power personnel area positioning method based on multi-sensor cooperation |
| CN103198277A (en) * | 2013-03-11 | 2013-07-10 | 浙江大学 | Low-power-consumption active-type RFID area locating method of whole network devices |
| CN103179648B (en) * | 2013-03-11 | 2015-04-15 | 浙江大学 | Low-power-consumption personnel zone location method based on multi-sensor coordination |
| CN104036603A (en) * | 2014-06-04 | 2014-09-10 | 深圳市中兴新地通信器材有限公司 | Active RFID identity recognition device as well as energy-saving method and energy-saving security system thereof |
| CN104182776A (en) * | 2014-08-06 | 2014-12-03 | 成都九洲电子信息系统股份有限公司 | A method for reducing power consumption of a 2.45GHz active tag meeting a national military protocol |
| CN106355241A (en) * | 2016-11-15 | 2017-01-25 | 紫光智云(江苏)物联网科技有限公司 | Active electronic tag activated by adopting magnetically controlled switch |
| CN106355241B (en) * | 2016-11-15 | 2023-12-05 | 紫光智云(江苏)物联网科技有限公司 | Active electronic tag activated by magnetic control switch |
| CN110659531A (en) * | 2018-09-26 | 2020-01-07 | 湖北用芯物联科技有限公司 | Semi-active RFID electronic label system and method |
| CN111950307A (en) * | 2020-07-02 | 2020-11-17 | 广东易理铺智能科技有限公司 | Electronic price tag awakening system and method based on electromagnetic signals |
| CN111950307B (en) * | 2020-07-02 | 2024-01-19 | 深圳创烽物联网技术有限公司 | Electronic price tag awakening system and method based on electromagnetic signals |
| CN114822009A (en) * | 2022-05-19 | 2022-07-29 | 深圳猎吧科技有限公司 | Shared electric bicycle parking system and parking method based on RFID technology |
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Open date: 20091118 |