CN103310170A - RFID (Radio Frequency Identification Device) card reader for identifying card entrance by non-responding manner and identification method - Google Patents
RFID (Radio Frequency Identification Device) card reader for identifying card entrance by non-responding manner and identification method Download PDFInfo
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- CN103310170A CN103310170A CN2012100701962A CN201210070196A CN103310170A CN 103310170 A CN103310170 A CN 103310170A CN 2012100701962 A CN2012100701962 A CN 2012100701962A CN 201210070196 A CN201210070196 A CN 201210070196A CN 103310170 A CN103310170 A CN 103310170A
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Abstract
The invention provides an RFID (Radio Frequency Identification Device) card reader for identifying card entrance by a non-responding manner and an identification method. The card reader comprises an antenna, an antenna circuit, a transmitting-receiving circuit and a coding/decoding circuit, which are sequentially connected by a circuit; the card reader further comprises an entrance detection circuit which is in circuit connection with the antenna, the antenna circuit and the transmitting-receiving circuit; the transmitting-receiving circuit transmits an electromagnetic field through the antenna circuit and the antenna; and when a card enters an electromagnetic field range of the card reader, the entrance detection circuit detects the change of a signal on a transmitting-receiving path and rapidly identifies the card to enable the card to enter the electromagnetic field. According to the RFID card reader for identifying the card entrance by the non-responding manner and the identification method disclosed by the invention, a slow-speed polling responding request identification manner is abandoned, and identification time is shortened; the efficiency of detecting the card entrance is improved, and the detection time is saved; and power consumption of finding the card is saved under a card-free state.
Description
Technical field
The present invention relates to RFID card reader and recognition methods that a kind of non-response mode identification card is marched into the arena.
Background technology
The tradition poll is sought the RFID card reader of card application, be to march into the arena by communication response mode identification card, be trial property ground acknowledges requests carrying out the card method that identification the time takes of marching into the arena, correctly do not reply then expression and do not have and do not stick into the field if having, reply correctly then that expression sticks into the field if having.Under the no card state, card reader continues periodically to send acknowledges requests; After confirming that the card state is arranged, carry out follow-up data communication.This process is actual to be card to be marched into the arena to identify take inefficient methodology, and in major part did not have the time that sticks into the field, poll acknowledges requests was at a slow speed sacrificed a large amount of card recognition times, wasted the power consumption that card produces of seeking under a large amount of no card states.
Summary of the invention
RFID card reader and recognition methods that a kind of non-response mode identification card provided by the invention is marched into the arena, abandon poll acknowledges requests recognition method at a slow speed, shortened recognition time, improved the efficient that card is marched into the arena and detected, save detection time, saved and sought the card power consumption under the no card state.
In order to achieve the above object, the invention provides the RFID card reader that a kind of non-response mode identification card is marched into the arena, the RFID card reader that this non-response mode identification card is marched into the arena comprises antenna, antenna circuit, transceiver circuit and the coding and decoding circuit of circuit connection successively, also comprises the testing circuit of marching into the arena that circuit connects described antenna, antenna circuit and transceiver circuit;
Transceiver circuit is by antenna circuit and antenna, the emission electromagnetic field, enter the electromagnetic field scope of card reader when card after, the testing circuit of marching into the arena detects by the signal on the emission RX path is changed, identification card enters in the electromagnetic field fast.
Antenna, antenna circuit, transceiver circuit are formed described emission RX path.
The signal that the testing circuit of marching into the arena detects antenna changes, and the signal that perhaps detects antenna circuit changes, and the signal that perhaps detects transceiver circuit changes.
Described signal is voltage signal or current signal.
It is the amplitude information variation of signal that described signal changes, or the variation of the frequency information of signal, or the phase information of signal changes.
The present invention also provides the recognition methods of the RFID card reader that a kind of non-response mode identification card marches into the arena, and comprises following steps:
Step 1, transceiver circuit are launched electromagnetic field by antenna circuit and antenna;
The signal that step 2, the testing circuit of marching into the arena detect on the emission RX path changes, and changes if detect signal, and then judging has card to enter in the electromagnetic field of card reader, carries out the data communication of card.
Described antenna, antenna circuit, transceiver circuit are formed the emission RX path.
In the described step 2, the signal that the testing circuit of marching into the arena detects antenna changes, and the signal that perhaps detects antenna circuit changes, and the signal that perhaps detects transceiver circuit changes.
Described signal is voltage signal or current signal.
It is the amplitude information variation of signal that described signal changes, or the variation of the frequency information of signal, or the phase information of signal changes.
The present invention has improved the efficient that card is marched into the arena and detected, and saves detection time, and the RFID Reader Design of seeking the card application for the low-power consumption poll provides a solution that flash card is marched into the arena and identified.
Description of drawings
Fig. 1 is the circuit block diagram of a kind of non-response mode identification card of the present invention RFID card reader of marching into the arena;
Fig. 2 is the average power consumption synoptic diagram of RFID card reader in the unit interval that traditional response mode poll is sought card;
Fig. 3 is the average power consumption synoptic diagram of RFID card reader in the unit interval that non-response mode identification card provided by the invention is marched into the arena.
Embodiment
Following according to Fig. 1～Fig. 3, specify preferred embodiment of the present invention.
As shown in Figure 1, it is the circuit block diagram of a kind of non-response mode identification card RFID card reader of marching into the arena, the RFID card reader that this non-response mode identification card is marched into the arena comprises antenna 101, antenna circuit 102, transceiver circuit 103 and the coding and decoding circuit 104 of circuit connection successively, also comprises the testing circuit 105 of marching into the arena that circuit connects described antenna 101, antenna circuit 102 and transceiver circuit 103;
The testing circuit 105 of marching into the arena can adopt such as modes such as field intensity detection, current/voltage variation collection, envelope demodulations and realize.
The recognition methods of the RFID card reader that a kind of non-response mode identification card is marched into the arena comprises following steps:
Step 1, transceiver circuit 103 are launched electromagnetic field by antenna circuit 102 and antenna 101;
The signal that step 2, the testing circuit 105 of marching into the arena detect on the emission RX path changes, and changes if detect signal, and then judging has card to enter in the electromagnetic field of card reader, carries out the data communication of card;
Described antenna 101, antenna circuit 102, transceiver circuit 103 are formed the emission RX path;
The signal that the testing circuit 105 of marching into the arena detects antenna 101 changes, and the signal that perhaps detects antenna circuit 102 changes, and the signal that perhaps detects transceiver circuit 103 changes;
Described signal is voltage signal or current signal;
It is the amplitude information variation of signal that described signal changes, or the variation of the frequency information of signal, or the phase information of signal changes.
The present invention is mainly used in the low-power consumption poll and seeks card Card Reader application scenario, do not need just to know whether have card to march into the arena by the communication acknowledges requests, by to the input on the transmit receive path, realize the flash card identification of marching into the arena, after marching into the arena, clear and definite card carries out the data communication of card again.
The advantage of maximum of the present invention is saved exactly in nothing and is sticked under the state, the poll card institute's power consumed of marching into the arena.
As shown in Figure 2, under traditional approach, it is as follows that the response mode poll is sought the average power consumption of RFID card reader in the unit interval of card:
(suppose after N poll sought card, card march into the arena 1 time test condition)
As shown in Figure 3, the average power consumption of RFID card reader in the unit interval that the non-response mode identification card that the present invention relates to is marched into the arena is as follows:
(suppose after N poll sought card, card march into the arena 1 time test condition)
Average power consumption that thus can more traditional RFID card reader and the present invention adopt the average power consumption of the RFID card reader that non-response mode identification card marches into the arena, the latter's the fast detecting time is in the us rank, and the former seek the card response time the chances are the ms rank, even 10ms rank, and the poll-interval of two kinds of detection modes is as broad as long, because what the latter's the fast detecting time was significantly less than the former seeks the card response time, so according to the average power consumption formula, can obtain, the latter's detection power consumption is less than the former reception power consumption.Can draw such conclusion: the RFID card reader that non-response mode identification card involved in the present invention is marched into the arena, reduce the average power consumption that poll is sought card largely.
Although content of the present invention has been done detailed introduction by above preferred embodiment, will be appreciated that above-mentioned description should not be considered to limitation of the present invention.After those skilled in the art have read foregoing, for multiple modification of the present invention with to substitute all will be apparent.Therefore, protection scope of the present invention should be limited to the appended claims.
Claims (10)
1. RFID card reader that non-response mode identification card is marched into the arena, it is characterized in that, the RFID card reader that this non-response mode identification card is marched into the arena comprises antenna (101), antenna circuit (102), transceiver circuit (103) and the coding and decoding circuit (104) of circuit connection successively, also comprises the testing circuit of marching into the arena (105) that circuit connects described antenna (101), antenna circuit (102) and transceiver circuit (103);
Transceiver circuit (103) is by antenna circuit (102) and antenna (101), the emission electromagnetic field, enter the electromagnetic field scope of card reader when card after, the testing circuit of marching into the arena (105) detects by the signal on the emission RX path is changed, and identification card enters in the electromagnetic field fast.
2. the non-response mode identification card as claimed in claim 1 RFID card reader of marching into the arena is characterized in that, antenna (101), antenna circuit (102), transceiver circuit (103) are formed described emission RX path.
3. the non-response mode identification card as claimed in claim 2 RFID card reader of marching into the arena, it is characterized in that, the signal that the testing circuit (105) of marching into the arena detects antenna (101) changes, the signal that perhaps detects antenna circuit (102) changes, and the signal that perhaps detects transceiver circuit (103) changes.
4. the non-response mode identification card as claimed in claim 3 RFID card reader of marching into the arena is characterized in that described signal is voltage signal or current signal.
5. the non-response mode identification card as claimed in claim 4 RFID card reader of marching into the arena is characterized in that, it is that the amplitude information of signal changes that described signal changes, or the frequency information of signal changes, or the phase information of signal changes.
6. the recognition methods of the non-response mode identification card RFID card reader of marching into the arena is characterized in that the method includes the steps of:
Step 1, transceiver circuit (103) are launched electromagnetic field by antenna circuit (102) and antenna (101);
The signal that step 2, the testing circuit of marching into the arena (105) detect on the emission RX path changes, and changes if detect signal, and then judging has card to enter in the electromagnetic field of card reader, carries out the data communication of card.
7. the recognition methods of the non-response mode identification card as claimed in claim 6 RFID card reader of marching into the arena is characterized in that, described antenna (101), antenna circuit (102), transceiver circuit (103) are formed the emission RX path.
8. the recognition methods of the non-response mode identification card as claimed in claim 6 RFID card reader of marching into the arena, it is characterized in that, in the described step 2, the signal that the testing circuit (105) of marching into the arena detects antenna (101) changes, the signal that perhaps detects antenna circuit (102) changes, and the signal that perhaps detects transceiver circuit (103) changes.
9. the recognition methods of the non-response mode identification card as claimed in claim 8 RFID card reader of marching into the arena is characterized in that described signal is voltage signal or current signal.
10. the recognition methods of the non-response mode identification card as claimed in claim 9 RFID card reader of marching into the arena, it is characterized in that, it is the amplitude information variation of signal that described signal changes, or the variation of the frequency information of signal, or the phase information of signal changes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100701962A CN103310170A (en) | 2012-03-16 | 2012-03-16 | RFID (Radio Frequency Identification Device) card reader for identifying card entrance by non-responding manner and identification method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN2012100701962A CN103310170A (en) | 2012-03-16 | 2012-03-16 | RFID (Radio Frequency Identification Device) card reader for identifying card entrance by non-responding manner and identification method |
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| CN103310170A true CN103310170A (en) | 2013-09-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2012100701962A Pending CN103310170A (en) | 2012-03-16 | 2012-03-16 | RFID (Radio Frequency Identification Device) card reader for identifying card entrance by non-responding manner and identification method |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105868673A (en) * | 2016-06-24 | 2016-08-17 | 成都理工大学 | Low-power-consumption radio frequency card reading circuit |
| CN110245533A (en) * | 2019-06-11 | 2019-09-17 | 北京聚利科技股份有限公司 | Tandem type card reader, card reading method, system and storage medium |
| CN112307783A (en) * | 2020-12-31 | 2021-02-02 | 飞天诚信科技股份有限公司 | Card reader auxiliary equipment and working method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US6396045B1 (en) * | 1997-09-26 | 2002-05-28 | Qinetiq Limited | Sensor apparatus |
| CN101482914A (en) * | 2008-01-12 | 2009-07-15 | 杭州利尔达科技有限公司 | Card-seeking detection circuit of radio frequency card |
| CN101501707A (en) * | 2006-10-23 | 2009-08-05 | Lg伊诺特有限公司 | RF sensor system and method for operating the same |
| CN101517594A (en) * | 2006-09-25 | 2009-08-26 | 传感电子公司 | Method and system for standing wave detection for radio frequency identification marker readers |
| CN201429849Y (en) * | 2009-05-18 | 2010-03-24 | 深圳市华士精成科技有限公司 | Radio frequency identification reader-writer |
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2012
- 2012-03-16 CN CN2012100701962A patent/CN103310170A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6396045B1 (en) * | 1997-09-26 | 2002-05-28 | Qinetiq Limited | Sensor apparatus |
| CN101517594A (en) * | 2006-09-25 | 2009-08-26 | 传感电子公司 | Method and system for standing wave detection for radio frequency identification marker readers |
| CN101501707A (en) * | 2006-10-23 | 2009-08-05 | Lg伊诺特有限公司 | RF sensor system and method for operating the same |
| CN101482914A (en) * | 2008-01-12 | 2009-07-15 | 杭州利尔达科技有限公司 | Card-seeking detection circuit of radio frequency card |
| CN201429849Y (en) * | 2009-05-18 | 2010-03-24 | 深圳市华士精成科技有限公司 | Radio frequency identification reader-writer |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105868673A (en) * | 2016-06-24 | 2016-08-17 | 成都理工大学 | Low-power-consumption radio frequency card reading circuit |
| CN110245533A (en) * | 2019-06-11 | 2019-09-17 | 北京聚利科技股份有限公司 | Tandem type card reader, card reading method, system and storage medium |
| CN110245533B (en) * | 2019-06-11 | 2022-08-23 | 北京聚利科技有限公司 | Cascade type card reader, card reading method, system and storage medium |
| CN112307783A (en) * | 2020-12-31 | 2021-02-02 | 飞天诚信科技股份有限公司 | Card reader auxiliary equipment and working method thereof |
| CN112307783B (en) * | 2020-12-31 | 2021-04-27 | 飞天诚信科技股份有限公司 | Card reader auxiliary equipment and working method thereof |
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Application publication date: 20130918 |
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