CN201936313U - Radio frequency card reading equipment for realizing near field communication - Google Patents
Radio frequency card reading equipment for realizing near field communication Download PDFInfo
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- CN201936313U CN201936313U CN2011200197647U CN201120019764U CN201936313U CN 201936313 U CN201936313 U CN 201936313U CN 2011200197647 U CN2011200197647 U CN 2011200197647U CN 201120019764 U CN201120019764 U CN 201120019764U CN 201936313 U CN201936313 U CN 201936313U
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Abstract
The utility model discloses radio frequency card reading equipment for realizing near field communication, which comprises an MCU (Micro Control Unit), a radio frequency communication module, a distance detection module, an array scanning antenna and a radio frequency communication antenna, wherein the MCU is connected with the radio frequency communication antenna through the radio frequency communication module; the array scanning antenna comprises at least one array scanning switching group and at least two sub-antennas; the MCU is used for controlling the array scanning switching groups to be connected with each sub-antenna in turn; the distance detection module is used for receiving a signal transmitted by a radio frequency intelligent card through each sub-antenna, calculating one statistic value according to a signal intensity value received by each sub-antenna and transmitting the signal intensity value to the MCU; and when the statistic value reaches a preset throttle value of the MCU, the MCU starts the radio frequency communication module which communicates with the radio frequency intelligent card through the radio frequency communication antenna. The radio frequency card reading equipment disclosed by the utility model can work stably; and the phenomena that the card is mistakenly read and the transaction is mistakenly carried out can be better solved and the safety for reading card and transacting can be guaranteed.
Description
Technical field
The utility model relates to wireless communication technology field, relates in particular to a kind of radio frequency card-reading apparatus of realizing near-field communication.
Background technology
Along with rapid economy development, increasing scientific and technical innovation product spreads in daily life and the work, the wherein perfect day by day combination of technology of Internet of things and mobile communication technology, such as the used radio frequency card-reading apparatus of the very fast mobile phone wallet of latest developments in the communication of 2.4GHz frequency range, show a kind of new life application to people, greatly made things convenient for people's live and work.
The radio frequency card-reading apparatus in the communication of 2.4GHz frequency range of prior art, such as vending machine, meal-selling machine or POS machine, their induction region is very wide, can be fit to the signal transmission of medium and long distance, but because induction region is very wide, can cause the mistake swipe the card, false sense should, so screened circuit or shielding material etc. will be installed in the radio frequency card-reading apparatus, induced signal to the radio frequency card-reading apparatus limits, but the intensity of meeting shielded signals such as screened circuit or shielding material is installed, causes radio frequency card-reading apparatus job insecurity.
At present popular mobile phone wallet is equipped with radio frequency smart card in mobile phone, and this radio frequency smart card is an integrated radio circuit on the basis of existing SIM card or UIM card, can carry out data communication with the radio frequency card-reading apparatus by this radio circuit.Because radio-frequency intelligent is installed in the mobile phone, the individual difference of mobile phone itself is very big, after radiofrequency signal sees through phone housing, its directivity is uncertain, and the radio frequency smart card radiation power direction in the different mobile phones is different, if the words that the common radio frequency card-reading apparatus that utilizes prior art only to have individual antenna comes signal acquisition, be difficult to aim at the radiation direction of the radio frequency smart card in the mobile phone, and mobile phone revolves and turns to another direction (even only rotating a very little angle), all might cause the distance erroneous judgement, so that produce and misread card, the phenomenon of mistake transaction can't ensure the security of Card Reader and transaction.
The utility model content
The utility model provides a kind of radio frequency card-reading apparatus of realizing near-field communication, does not need screened circuit or shielding material etc. are installed, and the work of radio frequency card-reading apparatus is more stable; Can solve mobile device (such as mobile phone) that radio frequency smart card is installed preferably and misread card, miss the phenomenon of concluding the business, ensure the security of Card Reader and transaction because of what radio frequency card-reading apparatus direction or position relatively uncertain produced.
The technical solution of the utility model is:
A kind of radio frequency card-reading apparatus of realizing near-field communication comprises MCU, radio-frequency communication module and radio communication antenna, and MCU is connected with the radio communication antenna by described radio-frequency communication module;
Also comprise distance detecting module and array scanning antenna, described array scanning antenna comprises at least one array scanning switches set and at least two sub antennas, one end of each array scanning switches set is connected with at least two sub antennas, the other end is connected with the distance detecting module with the control end of MCU respectively, and the output terminal of distance detecting module is connected with MCU;
Described MCU array of controls scanning switch group is connected each sub antenna in turn, the signal that described distance detecting module is sent by each sub antenna received RF smart card successively, the signal strength values that receives according to each sub antenna calculates a statistical value and sends to MCU, when this statistical value reached the default threshold value of MCU, described MCU started radio-frequency communication module and carries out data communication by radio communication antenna and radio frequency smart card.
The utility model uses the array scanning antenna that the signal strength values that radio frequency smart card sends is detected, when reaching the default threshold value of MCU, just start radio-frequency communication module and carry out data communication by radio communication antenna and radio frequency smart card, do not need to install screened circuit or shielding material etc., also intensity that just can shielded signal has solved because of the problem of the radio frequency card-reading apparatus job insecurity that screened circuit or shielding material etc. cause is installed; And use is the array scanning antenna, can all directions received signal, the signal that sends of received RF smart card preferably, can solve mobile device (such as mobile phone) that radio frequency smart card is installed preferably and misread card, miss the phenomenon of concluding the business, ensure the security of Card Reader and transaction because of what radio frequency card-reading apparatus direction or position relatively uncertain produced.
Description of drawings
Fig. 1 is the utility model radio frequency card-reading apparatus structure principle chart in one embodiment.
Embodiment
Below in conjunction with accompanying drawing specific embodiment of the utility model is done a detailed elaboration.
Radio frequency card-reading apparatus of the present utility model, as Fig. 1, comprise MCU 1, radio-frequency communication module 2, radio communication antenna 3, distance detecting module 4 and array scanning antenna 5, described array scanning antenna 5 comprises at least one array scanning switches set and at least two sub antennas, one end of each array scanning switches set is connected with at least two sub antennas, the other end is connected with distance detecting module 4 with the control end of MCU1 respectively, and the output terminal of distance detecting module 4 is connected with MCU1;
Described MCU1 array of controls scanning switch group is connected in turn (can by clockwise or counterclockwise or do not limit the order direction) each sub antenna, promptly connect each sub antenna and distance detecting module in turn, have only a sub antenna and distance detecting module to connect constantly at each, thereby make described each sub antenna take turns conducting work, avoid the phase mutual interference between them; The signal that described distance detecting module 4 is sent by each sub antenna received RF smart card successively, the signal strength values that receives according to each sub antenna calculates a statistical value and sends to MCU1, when this statistical value reached the default threshold value of MCU1, described MCU1 started radio-frequency communication module 2 and carries out data communication by radio communication antenna 3 and radio frequency smart card.
Wherein, the default threshold value of MCU1 can be provided with according to practical application.The utility model service range detection module 4 detects the distance of radio frequency card-reading apparatus and radio frequency smart card, owing to do not need to install screened circuit or shielding material etc., also intensity that just can shielded signal has solved because of the problem of the radio frequency card-reading apparatus job insecurity that screened circuit or shielding material etc. cause is installed; And use is the array scanning antenna, comprise a plurality of sub antennas, can each orientation received signal, the signal that sends of received RF smart card preferably, can solve mobile device (such as mobile phone) that radio frequency smart card is installed preferably and misread card, miss the phenomenon of concluding the business, ensure the security of Card Reader and transaction because of what radio frequency card-reading apparatus direction or position relatively uncertain produced.
Described radio-frequency communication module 2 and distance detecting module 3 can adopt the mode of timesharing to carry out work, and the concrete working time is controlled by MCU1.When starting working, MCU1 can activate radio frequency smart card (radio frequency smart card also can adopt other modes to open) by radio-frequency communication module 2 earlier, in the radio frequency smart card return signal, MCU1 array of controls scanning switch group is connected each sub antenna in turn, the signal that distance detecting module 4 is sent by each sub antenna received RF smart card successively, MCU1 carries out next step data communication again after judging that radio-frequency intelligent is stuck in the Secure Transaction scope; If radio frequency smart card not in the Secure Transaction scope, does not then carry out next step data communication.
In a preferred embodiment, described radio-frequency communication module 2, distance detecting module 4 and circular polarisation radio-frequency antenna 5 can all be operated in uhf band or SHF frequency range, such as the 2.4GHz frequency range.
Wherein, described statistical value can be summation or the mean value or the maximal value of the signal strength values of each sub antenna reception, perhaps a value that calculates according to other computing method.If this statistical value is during more than or equal to the default threshold value of MCU1, MCU1 can judge that radio-frequency intelligent is stuck in the Secure Transaction scope; If this statistical value is during less than the default threshold value of MCU1, MCU1 judges that radio frequency smart card is not in the Secure Transaction scope.
The distribution of shapes of each sub antenna can not limit, but any two adjacent sub antenna distances are smaller or equal to the quarter-wave of sub antenna frequency of operation.The receiving plane that can guarantee whole array scanning antenna like this is continuous, ensures the judgement of the utility model radio frequency card-reading apparatus and the accuracy of Card Reader.
Above-described the utility model embodiment does not constitute the qualification to the utility model protection domain.Any modification of within spirit of the present utility model and principle, being done, be equal to and replace and improvement etc., all should be included within the claim protection domain of the present utility model.
Claims (4)
1. a radio frequency card-reading apparatus of realizing near-field communication comprises MCU, radio-frequency communication module and radio communication antenna, and MCU is connected with the radio communication antenna by described radio-frequency communication module; It is characterized in that:
Also comprise distance detecting module and array scanning antenna, described array scanning antenna comprises at least one array scanning switches set and at least two sub antennas, one end of each array scanning switches set is connected with at least two sub antennas, the other end is connected with the distance detecting module with the control end of MCU respectively, and the output terminal of distance detecting module is connected with MCU;
Described MCU array of controls scanning switch group is connected each sub antenna in turn, the signal that described distance detecting module is sent by each sub antenna received RF smart card successively, the signal strength values that receives according to each sub antenna calculates a statistical value and sends to MCU, when this statistical value reached the default threshold value of MCU, described MCU started radio-frequency communication module and carries out data communication by radio communication antenna and radio frequency smart card.
2. the radio frequency card-reading apparatus of realization near-field communication according to claim 1 is characterized in that: described statistical value is summation or the mean value or the maximal value of the signal strength values of each sub antenna reception.
3. the radio frequency card-reading apparatus of realization near-field communication according to claim 1 and 2 is characterized in that: any two adjacent sub antenna distances are smaller or equal to the quarter-wave of sub antenna frequency of operation.
4. the radio frequency card-reading apparatus of realization near-field communication according to claim 3 is characterized in that: described radio-frequency communication module, distance detecting module and array scanning antenna are operated in uhf band or SHF frequency range.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200197647U CN201936313U (en) | 2011-01-21 | 2011-01-21 | Radio frequency card reading equipment for realizing near field communication |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200197647U CN201936313U (en) | 2011-01-21 | 2011-01-21 | Radio frequency card reading equipment for realizing near field communication |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201936313U true CN201936313U (en) | 2011-08-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200197647U Expired - Fee Related CN201936313U (en) | 2011-01-21 | 2011-01-21 | Radio frequency card reading equipment for realizing near field communication |
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| Country | Link |
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| CN (1) | CN201936313U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103487671A (en) * | 2012-06-12 | 2014-01-01 | 航天信息股份有限公司 | Method and device for detecting non-contact card |
| CN104040564A (en) * | 2011-12-21 | 2014-09-10 | 英特尔公司 | Tap zones for near field coupling devices |
| CN107850636A (en) * | 2015-08-21 | 2018-03-27 | 宝马股份公司 | The evaluation and/or design of multiaerial system |
| CN110516486A (en) * | 2019-09-29 | 2019-11-29 | 湖北美和易思教育科技有限公司 | A kind of wireless timesharing RFID terminal of Internet of Things |
-
2011
- 2011-01-21 CN CN2011200197647U patent/CN201936313U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104040564A (en) * | 2011-12-21 | 2014-09-10 | 英特尔公司 | Tap zones for near field coupling devices |
| CN103487671A (en) * | 2012-06-12 | 2014-01-01 | 航天信息股份有限公司 | Method and device for detecting non-contact card |
| CN107850636A (en) * | 2015-08-21 | 2018-03-27 | 宝马股份公司 | The evaluation and/or design of multiaerial system |
| CN110516486A (en) * | 2019-09-29 | 2019-11-29 | 湖北美和易思教育科技有限公司 | A kind of wireless timesharing RFID terminal of Internet of Things |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110817 Termination date: 20190121 |