CN114186574A - Intelligent student card communication method based on near field communication - Google Patents
Intelligent student card communication method based on near field communication Download PDFInfo
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- CN114186574A CN114186574A CN202111531373.8A CN202111531373A CN114186574A CN 114186574 A CN114186574 A CN 114186574A CN 202111531373 A CN202111531373 A CN 202111531373A CN 114186574 A CN114186574 A CN 114186574A
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K17/00—Methods or arrangements for effecting co-operative working between equipments covered by two or more of main groups G06K1/00 - G06K15/00, e.g. automatic card files incorporating conveying and reading operations
- G06K17/0022—Methods or arrangements for effecting co-operative working between equipments covered by two or more of main groups G06K1/00 - G06K15/00, e.g. automatic card files incorporating conveying and reading operations arrangements or provisious for transferring data to distant stations, e.g. from a sensing device
- G06K17/0029—Methods or arrangements for effecting co-operative working between equipments covered by two or more of main groups G06K1/00 - G06K15/00, e.g. automatic card files incorporating conveying and reading operations arrangements or provisious for transferring data to distant stations, e.g. from a sensing device the arrangement being specially adapted for wireless interrogation of grouped or bundled articles tagged with wireless record carriers
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K7/00—Methods or arrangements for sensing record carriers, e.g. for reading patterns
- G06K7/10—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation
- G06K7/10009—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation sensing by radiation using wavelengths larger than 0.1 mm, e.g. radio-waves or microwaves
- G06K7/10158—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation sensing by radiation using wavelengths larger than 0.1 mm, e.g. radio-waves or microwaves methods and means used by the interrogation device for reliably powering the wireless record carriers using an electromagnetic interrogation field
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K7/00—Methods or arrangements for sensing record carriers, e.g. for reading patterns
- G06K7/10—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation
- G06K7/10009—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation sensing by radiation using wavelengths larger than 0.1 mm, e.g. radio-waves or microwaves
- G06K7/10316—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation sensing by radiation using wavelengths larger than 0.1 mm, e.g. radio-waves or microwaves using at least one antenna particularly designed for interrogating the wireless record carriers
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Abstract
The invention discloses an intelligent student card communication method based on near field communication, which comprises the following steps: when the intelligent student card is close to the student card host and within the wireless charging receiving distance range, acquiring a power supply signal by using a wireless charging receiving module; driving an NFC/RFID chip U2 to initiate a communication request to the student card host by using the microcontroller U1; the student card host acquires a communication request initiated by the NFC/RFID chip U2, and reads the basic information and the identification code of the student card recorded in the microcontroller U1 by using the transceiving antenna and the NFC/RFID chip U2; and judging the consistency of the basic information and the identification code of the student card; the student card host acquires the smart campus information stored in the microcontroller U1 by using the transceiver antenna and the NFC/RFID chip U2, and performs data transmission.
Description
Technical Field
The invention relates to the technical field of near field communication, in particular to an intelligent student card communication method based on near field communication.
Background
Currently, the student card in the prior art only records the basic information (such as name, school number, class, etc.) of students and the campus consumption information. Therefore, the function of the student card in the prior art is single. With the continuous advance of smart campuses, informatization, datamation, networking and systematization gradually enter the campuses, so that more information is recorded depending on student cards, and the safety of information communication is ensured. However, most of the secure smart campus cards in the prior art are not provided with secure interactive encryption, and information in the campus cards is easy to copy.
For example, the invention patent of china, having a patent application number of "202110114422.1" and a name of "safe intelligent campus card based on internet of things technology", includes a GPS positioning module, a radio frequency identification module, a personal information two-dimensional code tag, an electronic tag, a mobile phone APP and a campus server, wherein the mobile phone APP and the campus server are matched with the campus card, the GPS positioning module is used for providing a positioning function for the campus card, so that the campus card can be found after being lost, the radio frequency identification module is used for card swiping identification of the campus card, and the personal information two-dimensional code tag is used for recording some simple personal information of an owner, so that the campus card can be returned to the owner after being found by other people.
For another Chinese invention patent with the patent application number of '202010142439.3' and the name of 'safe intelligent campus card based on internet of things technology', the smart campus card security system comprises a Bluetooth anti-loss module, a breakpoint positioning module, an RFID (radio frequency identification) module, a wireless signal receiver and a buzzer; the Bluetooth anti-loss module is used for connecting the campus card with a mobile phone to realize an over-distance alarm reminding function; the breakpoint positioning module is used for marking a card loss position through a mobile phone map after the Bluetooth connection between the campus card and the mobile phone is disconnected, and performing breakpoint positioning; the electronic tag is used for identifying card owner information through the RFID module after the campus card is picked up, and informing a card owner to realize a timely retrieving function; and the wireless signal receiver is used for receiving the meal taking signal sent by the dining room window host and controlling the buzzer to vibrate. The function of the campus card in the technology still remains in the traditional function, and only the communication mode is changed. However, it still cannot perform secure and reliable information interaction.
Therefore, an intelligent student card communication method based on near field communication, which is simple in logic and safe and reliable in information interaction, is urgently needed to be provided.
Disclosure of Invention
Aiming at the problems, the invention aims to provide an intelligent student card communication method based on near field communication, and the technical scheme adopted by the invention is as follows:
an intelligent student card communication method based on near field communication adopts a student card host which is in wireless communication with an intelligent student card; a wireless charging transmitting module and a wireless communication transceiving module are arranged in the student card host; the intelligent student card is internally provided with a wireless charging receiving module, a microcontroller U1 which is connected with the wireless charging receiving module and has the model of TSSOP20/SOP20, an NFC/RFID chip U2 which is connected with the microcontroller U1 and the wireless charging receiving module and has the model of M24SR 02-Y, and a transceiving antenna which is connected with the NFC/RFID chip U2 and is in communication connection with the wireless communication transceiving module;
the intelligent student card communication method comprises the following steps:
when the intelligent student card is close to the student card host and within the wireless charging receiving distance range, acquiring a power supply signal by using a wireless charging receiving module;
driving an NFC/RFID chip U2 to initiate a communication request to the student card host by using the microcontroller U1;
the student card host acquires a communication request initiated by the NFC/RFID chip U2, and reads the basic information and the identification code of the student card recorded in the microcontroller U1 by using the transceiving antenna and the NFC/RFID chip U2;
judging whether the identification code prestored in the student card host is consistent with the identification code recorded in the microcontroller U1 or not, and if so, comparing the basic information of the student card; otherwise, quitting the communication request;
extracting the basic information of the student card prestored in the student card host, comparing, and if the basic information is consistent, finishing the communication request; otherwise, quitting the communication request;
after communication connection, the student card host acquires the smart campus information stored in the microcontroller U1 by using the transceiving antenna and the NFC/RFID chip U2, and performs data transmission.
Further, the near field communication-based intelligent student card communication method further comprises the steps that the student card host acquires a communication request initiated by the NFC/RFID chip U2, whether the number of the basic information of the student card is unique or not is judged, and if the number of the basic information of the student card is more than one, the communication request is quitted.
Further, the smart campus information comprises canteen consumption information, supermarket and canteen consumption information, hospitalizing information, dormitory electric recharging information, water affair payment information, internet surfing payment information, identity access control information, book borrowing information and regular bus payment information.
Preferably, the wireless charging receiving module comprises a capacitor C3, a capacitor C4 and a capacitor C2 which are connected in parallel and have one end connected with a Vcc pin of the microcontroller U1 and the other end grounded, a diode D1 of which an output cathode is connected with the Vcc pin of the microcontroller U1, a capacitor C1 and a receiving coil T1 which are connected in parallel and have one end connected with an input anode of a diode D1 and the other end grounded.
Further, the intelligent student card communication method further comprises a resistor R2 connected between an SCL pin and a VCC pin of the NFC/RFID chip U2, and a resistor R1 connected between an SDA pin and a VCC pin of the NFC/RFID chip U2.
Compared with the prior art, the invention has the following beneficial effects:
(1) the wireless charging receiving module is skillfully arranged to obtain wireless power supply before and during communication; meanwhile, the intelligent campus card system utilizes the microcontroller U1 to store intelligent campus information so as to ensure the completeness of functions;
(2) the NFC/RFID chip U2 and the transceiving antenna are used for short-distance output transmission, the NFC/RFID chip U2 can be used for communication request and verification data transmission, and can also be used for intelligent campus information transmission, the structure is simple, and the data transmission is reliable;
(3) according to the invention, the safety and reliability of information interaction are ensured through the double verification of the student card basic information and the identification code; meanwhile, in order to avoid that a plurality of intelligent campus cards simultaneously request in a communication request or a communication process, the quantity of the student card basic information is judged, so that the student card basic information and the identification code are prevented from being cross verified;
in conclusion, the near field communication method has the advantages of simple logic, accuracy, reliability, information safety, reliability and the like, and has high practical value and popularization value in the technical field of near field communication.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope of protection, and it is obvious for those skilled in the art that other related drawings can be obtained according to these drawings without inventive efforts.
FIG. 1 is a schematic structural diagram of the present invention.
FIG. 2 is a logic flow diagram of the present invention.
Detailed Description
To further clarify the objects, technical solutions and advantages of the present application, the present invention will be further described with reference to the accompanying drawings and examples, and embodiments of the present invention include, but are not limited to, the following examples. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
Examples
As shown in fig. 1 to 2, the present embodiment provides a near field communication-based intelligent student card communication method, which employs a student card host in wireless communication with an intelligent student card; and a wireless charging transmitting module and a wireless communication transceiving module are arranged in the student card host.
In this embodiment, the hardware devices provided in the smart student card are as follows:
the NFC/RFID antenna comprises a microcontroller U1 with the model of TSSOP20/SOP20, an NFC/RFID chip U2 with the model of M24SR 02-Y, a transceiving antenna connected with the NFC/RFID chip U2, a capacitor C3, a capacitor C4 and a capacitor C2 which are connected in parallel, one end of the capacitor C3 is connected with a Vcc pin of the microcontroller U1, the other end of the capacitor C3829 is grounded, a diode D1 of which an output cathode is connected with the Vcc pin of the microcontroller U1, a capacitor C1 and a receiving coil T1 which are connected in parallel, one end of the capacitor C1 is connected with an input anode of a diode D1, and the other end of the capacitor C1 is grounded, a resistor R2 connected between an SCL pin and a VCC pin of an NFC/RFID chip U2, and a resistor R1 connected between an SDA pin and a VCC pin of the NFC/RFID chip 2. The capacitor C1, the receiving coil T1, the capacitor C3, the capacitor C4, the capacitor C2 and the diode D1 jointly form a wireless charging receiving module. In the embodiment, the wireless charging receiving module is used for obtaining the electric energy required by the operation, the diode D1 is used for filtering to obtain direct current power supply, and the capacitor C3 and the capacitor C4 are used for voltage-stabilizing charging and discharging.
Specifically, the intelligent student card communication method of the embodiment includes the following steps:
the first step, when the intelligence student card pastes near student's card host computer and is in wireless receiving distance range that charges, utilize wireless receiving module that charges to acquire power supply signal.
And secondly, driving the NFC/RFID chip U2 by using the microcontroller U1 to initiate a communication request to the student card host. And when the number of the student card basic information is unique, entering the third step.
Thirdly, the student card host acquires a communication request initiated by the NFC/RFID chip U2, and reads the student card basic information and the identification code recorded in the microcontroller U1 by using the transceiving antenna and the NFC/RFID chip U2; the student card basic information and the identification code are unique and definite, wherein the student card basic information is easy to know, but the preset identification code cannot be directly acquired, so that the safety and the reliability are higher.
Fourthly, judging whether the identification code prestored in the student card host is consistent with the identification code recorded in the microcontroller U1, and if so, comparing the basic information of the student card; otherwise, quitting the communication request;
fifthly, extracting the basic information of the student card prestored in the student card host, comparing the basic information and finishing the communication request if the basic information is consistent with the basic information; otherwise, quitting the communication request;
and sixthly, after communication connection, the student card host acquires the smart campus information stored in the microcontroller U1 by using the transceiving antenna and the NFC/RFID chip U2, and performs data transmission. The intelligent campus information comprises, but is not limited to, canteen consumption information, supermarket and canteen consumption information, hospitalizing information, dormitory electric recharging information, water affair payment information, internet surfing payment information, identity access control information, book borrowing information and regular bus payment information.
The above-mentioned embodiments are only preferred embodiments of the present invention, and do not limit the scope of the present invention, but all the modifications made by the principles of the present invention and the non-inventive efforts based on the above-mentioned embodiments shall fall within the scope of the present invention.
Claims (5)
1. An intelligent student card communication method based on near field communication adopts a student card host which is in wireless communication with an intelligent student card; the intelligent student card is characterized in that a wireless charging receiving module, a microcontroller U1 which is connected with the wireless charging receiving module and has the model of TSSOP20/SOP20, an NFC/RFID chip U2 which is connected with the microcontroller U1 and the wireless charging receiving module and has the model of M24SR 02-Y, and a transceiving antenna which is connected with the NFC/RFID chip U2 and is in communication connection with the wireless communication transceiving module are arranged in the student card host;
the intelligent student card communication method comprises the following steps:
when the intelligent student card is close to the student card host and within the wireless charging receiving distance range, acquiring a power supply signal by using a wireless charging receiving module;
driving an NFC/RFID chip U2 to initiate a communication request to the student card host by using the microcontroller U1;
the student card host acquires a communication request initiated by the NFC/RFID chip U2, and reads the basic information and the identification code of the student card recorded in the microcontroller U1 by using the transceiving antenna and the NFC/RFID chip U2;
judging whether the identification code prestored in the student card host is consistent with the identification code recorded in the microcontroller U1 or not, and if so, comparing the basic information of the student card; otherwise, quitting the communication request;
extracting the basic information of the student card prestored in the student card host, comparing, and if the basic information is consistent, finishing the communication request; otherwise, quitting the communication request;
after communication connection, the student card host acquires the smart campus information stored in the microcontroller U1 by using the transceiving antenna and the NFC/RFID chip U2, and performs data transmission.
2. The near field communication based intelligent student card communication method according to claim 1, further comprising the step of the student card host obtaining a communication request initiated by the NFC/RFID chip U2, and judging whether the number of the student card basic information is unique, and if so, exiting the communication request.
3. The near field communication-based intelligent student card communication method according to claim 1, wherein the smart campus information comprises canteen consumption information, supermarket and canteen consumption information, hospitalization information, dormitory electric charging information, water affair payment information, internet payment information, identity access control information, book borrowing information, and regular bus payment information.
4. The near field communication based smart student card communication method according to claim 1, 2 or 3, wherein the wireless charging receiving module comprises a capacitor C3, a capacitor C4 and a capacitor C2 connected in parallel with one end connected to a Vcc pin of a microcontroller U1 and the other end connected to ground, a diode D1 with an output cathode connected to the Vcc pin of the microcontroller U1, and a capacitor C1 and a receiving coil T1 connected in parallel with one end connected to an input anode of a diode D1 and the other end connected to ground.
5. The near field communication based smart student card communication method of claim 4, further comprising a resistor R2 connected between an SCL pin and a VCC pin of the NFC/RFID chip U2, and a resistor R1 connected between an SDA pin and a VCC pin of the NFC/RFID chip U2.
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| CN202111531373.8A CN114186574A (en) | 2021-12-14 | 2021-12-14 | Intelligent student card communication method based on near field communication |
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| CN202111531373.8A CN114186574A (en) | 2021-12-14 | 2021-12-14 | Intelligent student card communication method based on near field communication |
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Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101493899A (en) * | 2009-03-06 | 2009-07-29 | 广东纺织职业技术学院 | Campus card identification method based on RFID technology |
| US20100039234A1 (en) * | 2008-08-15 | 2010-02-18 | Ivi Smart Technologies, Inc. | Rf power conversion circuits & methods, both for use in mobile devices |
| CN101950439A (en) * | 2010-08-16 | 2011-01-19 | 南京信息工程大学 | Fingerprint identification and short messaging service notification system in kindergarten based on biological characteristic verification and method |
| CN103455956A (en) * | 2013-09-02 | 2013-12-18 | 深圳市平安校园科技有限公司 | Automatic informing method for arrival of kindergarten parents and system thereof |
| KR20140011756A (en) * | 2012-07-19 | 2014-01-29 | 차승일 | Nfc usim card with wireless charging function |
| CN104700337A (en) * | 2013-12-04 | 2015-06-10 | 大连鸿祺科技发展有限公司 | Campus card system |
| CN105513151A (en) * | 2015-12-21 | 2016-04-20 | 深圳大学 | Class attendance checking method and system |
| CN105956500A (en) * | 2016-04-20 | 2016-09-21 | 东华大学 | Automatic greeting system based on radio frequency identification technology |
| CN107679604A (en) * | 2017-10-16 | 2018-02-09 | 厦门盈趣科技股份有限公司 | A kind of identification card and RF system |
| CN108734463A (en) * | 2018-05-24 | 2018-11-02 | 大连卓云科技有限公司 | Electronics all-purpose card and fare payment system |
| CN109949432A (en) * | 2019-03-01 | 2019-06-28 | 北华大学 | A kind of student's special electronic attendance system and method based on radio-frequency technique |
| CN110647970A (en) * | 2019-10-08 | 2020-01-03 | 西安冠铭科技股份有限公司 | Campus sharing monthly ticket |
| CN111414980A (en) * | 2020-03-04 | 2020-07-14 | 南京邮电大学 | Safe intelligent campus card based on internet of things |
-
2021
- 2021-12-14 CN CN202111531373.8A patent/CN114186574A/en active Pending
Patent Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20100039234A1 (en) * | 2008-08-15 | 2010-02-18 | Ivi Smart Technologies, Inc. | Rf power conversion circuits & methods, both for use in mobile devices |
| CN101493899A (en) * | 2009-03-06 | 2009-07-29 | 广东纺织职业技术学院 | Campus card identification method based on RFID technology |
| CN101950439A (en) * | 2010-08-16 | 2011-01-19 | 南京信息工程大学 | Fingerprint identification and short messaging service notification system in kindergarten based on biological characteristic verification and method |
| KR20140011756A (en) * | 2012-07-19 | 2014-01-29 | 차승일 | Nfc usim card with wireless charging function |
| CN103455956A (en) * | 2013-09-02 | 2013-12-18 | 深圳市平安校园科技有限公司 | Automatic informing method for arrival of kindergarten parents and system thereof |
| CN104700337A (en) * | 2013-12-04 | 2015-06-10 | 大连鸿祺科技发展有限公司 | Campus card system |
| CN105513151A (en) * | 2015-12-21 | 2016-04-20 | 深圳大学 | Class attendance checking method and system |
| CN105956500A (en) * | 2016-04-20 | 2016-09-21 | 东华大学 | Automatic greeting system based on radio frequency identification technology |
| CN107679604A (en) * | 2017-10-16 | 2018-02-09 | 厦门盈趣科技股份有限公司 | A kind of identification card and RF system |
| CN108734463A (en) * | 2018-05-24 | 2018-11-02 | 大连卓云科技有限公司 | Electronics all-purpose card and fare payment system |
| CN109949432A (en) * | 2019-03-01 | 2019-06-28 | 北华大学 | A kind of student's special electronic attendance system and method based on radio-frequency technique |
| CN110647970A (en) * | 2019-10-08 | 2020-01-03 | 西安冠铭科技股份有限公司 | Campus sharing monthly ticket |
| CN111414980A (en) * | 2020-03-04 | 2020-07-14 | 南京邮电大学 | Safe intelligent campus card based on internet of things |
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