CN201522716U - Radio-frequency card read-write device with three communication interfaces - Google Patents

Radio-frequency card read-write device with three communication interfaces Download PDF

Info

Publication number
CN201522716U
CN201522716U CN2009201985081U CN200920198508U CN201522716U CN 201522716 U CN201522716 U CN 201522716U CN 2009201985081 U CN2009201985081 U CN 2009201985081U CN 200920198508 U CN200920198508 U CN 200920198508U CN 201522716 U CN201522716 U CN 201522716U
Authority
CN
China
Prior art keywords
circuit
radio
frequency card
card read
write
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN2009201985081U
Other languages
Chinese (zh)
Inventor
刘利民
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Huzhou University
Original Assignee
Huzhou University
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Huzhou University filed Critical Huzhou University
Priority to CN2009201985081U priority Critical patent/CN201522716U/en
Application granted granted Critical
Publication of CN201522716U publication Critical patent/CN201522716U/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Abstract

The utility model discloses a radio-frequency card read-write device with three communication interfaces, comprising an MCU control circuit, a radio-frequency card read-write circuit, an antenna, a power supply and a multiplexer, wherein a control output end of the MCU control circuit is connected with an input end of the radio-frequency card read-write circuit, an address data bus of the MCU control circuit is connected with that of the radio-frequency card read-write circuit; a signal line of the radio-frequency card read-write circuit is connected with the antenna; a serial port of the MCU control circuit is connected with the multiplexer; and the communication signal ports of an RS232 serial interface circuit, an RS485 serial interface circuit and an IrDA interface circuit are all connected with the multiplexer. The radio-frequency card read-write device has three standard serial interfaces, is easy to be networked and carry out deep development and product upgrading, can realize wireless data acquisition, establish a basis for deep development such as improving using range of equipment, realizing the integration of radio-frequency card application systems and networking control management, and the like.

Description

A kind of radio-frequency card read-write equipment that has three communication interfaces
[technical field]
The utility model relates to the radio-frequency card read-write equipment, relates in particular to the network management of can either realizing that has three communication interfaces and can realize many standard radio frequencies card read-write equipment of data acquisition again.
[background technology]
Oneself extensively exists contactless chip card reader or radio-frequency card to be called for short (rfid card) on the domestic and international market at present, and its frequency of operation mostly is 125KHz.Early stage radio-frequency card card reading module often can only be discerned a kind of international standard, does not possess the use compatibility to other international standard radio-frequency cards, poor compatibility, and the radio-frequency card of different international standards can not use in same system.For this reason, it is 200620140958.1 that the applicant has proposed the patent No. on Dec 11st, 2006, name is called a kind of patented claim of radio-frequency card read-write equipment of the RS485 of having interface, and on 01 09th, 2008 Granted publication, this contactless smart card read-write equipment can be discerned a plurality of international standards such as ISO/IEC 14443A, ISO/IEC 14443B or ISO/IEC 15693, and is compatible good, highly versatile, possess the ability with the external circuit direct communication, can realize network management.
Though the contactless smart card read-write equipment after improving through the applicant possesses the recognition function of multiple international standard radio-frequency card, possess the ability with the external circuit direct communication, can realize network management; But this device does not have general RS232 standard serial interface, can not utilize the ISP technology that device is carried out program at system update, and this device do not have the IrDA interface, can't realize data acquisition.Radio-frequency card also is known as contactless smart card, radio-frequency (RF) IC card or intelligent RF card in this manual.
So, how to develop a kind of a plurality of standard serial interfaces that have, can either realize network management, can realize that again the radio-frequency card read-write equipment of data acquisition becomes the important topic of those skilled in the art's research.
[summary of the invention]
The purpose of this utility model solves the problems of the prior art exactly, proposes a kind of radio-frequency card read-write equipment that has three communication interfaces, can either realize network management, can realize data acquisition again.
For achieving the above object, the utility model proposes a kind of radio-frequency card read-write equipment that has three communication interfaces, comprise the MCU control circuit, the radio-frequency card read/write circuit, antenna and power supply, the control output end of MCU control circuit is connected in the input end of radio-frequency card read/write circuit, the address data bus of MCU control circuit is connected with the address data bus of radio-frequency card read/write circuit, described MCU control circuit all is connected with power supply with the radio-frequency card read/write circuit, the signal wire of radio-frequency card read/write circuit links to each other with antenna, also comprise MUX, the RS232 serial interface circuit, the RS485 serial interface circuit, the IrDA interface circuit, the serial port of MCU control circuit is connected with MUX, the RS232 serial interface circuit, the signal of communication port of RS485 serial interface circuit and IrDA interface circuit all is connected with MUX.
As preferably, described MCU control circuit comprises microcontroller MCU and auxiliary oscillator circuit, and described auxiliary oscillator circuit is connected with microcontroller MCU.
As preferably, described microcontroller MCU is the 89C51 integrated circuit (IC) chip.
As preferably, described radio-frequency card read/write circuit comprises the intelligent read integrated circuit and second auxiliary oscillator circuit, and described intelligent read integrated circuit is connected with second auxiliary oscillator circuit.
As preferably, described intelligent read integrated circuit is the RC632 integrated circuit (IC) chip.
As preferably, described RC632 integrated circuit (IC) chip is carried out ISO/IEC 14443A, ISO/IEC14443B and 15,693 three kinds of international standards of ISO/IEC.
As preferably, described RS232 serial interface circuit, RS485 serial interface circuit and IrDA interface circuit are made of standard integrated circuit modules or discrete component circuit.
The beneficial effects of the utility model: the utility model is based on microcontroller technology, the standard non-contact intelligent IC-card identification of multinational border, standard RS232, RS485 and IrDA interfacing, realize control, the operation of radio-frequency card read/write circuit by the program in the microcontroller MCU chip, analyze intelligent card data content, checking smart card user's validity, valid data are handled, are stored and export.The radio-frequency card read/write circuit carries out exchanges data, judges that the physics validity and the MCU of non-contact card carry out data transmission and carry out reading and writing data under the control of MCU by antenna and radio-frequency card.Microcontroller MCU communicates by letter with external circuit with the IrDA interface circuit by RS232, RS485, and realize the in-system programming of network management control and device program possessing the ability of carrying out wireless data exchange with external unit simultaneously by communicating by letter between host computer and Duo Tai read-write equipment.The utlity model has three standard serial interfaces, be easy to networking, carry out deep level development and product up-gradation, can realize data acquisition, for deep level developments such as the usable range that improves equipment, the integration that realizes the radio-frequency card application system and networked control and management are laid a good foundation.
Feature of the present utility model and advantage will be elaborated in conjunction with the accompanying drawings by embodiment.
[description of drawings]
Fig. 1 is a kind of structured flowchart that has the radio-frequency card read-write equipment of three communication interfaces of the utility model;
Fig. 2 is a kind of circuit theory diagrams that have the radio-frequency card read-write equipment of three communication interfaces of the utility model.
[embodiment]
Consult Fig. 1, the radio-frequency card read-write equipment that has three communication interfaces, comprise MCU control circuit 1, radio-frequency card read/write circuit 2, antenna 3 and power supply 4, the control output end of MCU control circuit 1 is connected in the input end of radio-frequency card read/write circuit 2, the address data bus of MCU control circuit 1 is connected with the address data bus of radio-frequency card read/write circuit 2, described MCU control circuit 1 all is connected with power supply 4 with radio-frequency card read/write circuit 2, the signal wire of radio-frequency card read/write circuit 2 links to each other with antenna 3, also comprise MUX 5, RS232 serial interface circuit 6, RS485 serial interface circuit 7, IrDA interface circuit 8, the serial port of MCU control circuit 1 is connected with MUX 5, RS232 serial interface circuit 6, RS485 serial interface circuit 7, the signal of communication port of IrDA interface circuit 8 all is connected with MUX 5.Radio-frequency card read/write circuit 2 carries out exchanges data, judges that the physics validity and the MCU control circuit 1 of non-contact card carry out data transmission and carry out reading and writing data under the control of MCU control circuit 1 by antenna 3 and radio-frequency card.Be provided with program in the MCU chip of MCU control circuit 1, radio-frequency card read/write circuit 2 controlled, operated, analyze data content, the checking intelligent RF card of intelligent RF card user's validity, valid data are handled, are stored and export.MCU control circuit 1 is communicated by letter with external circuit or infrared data collecting device by RS232 serial interface circuit 6, RS485 serial interface circuit 7, IrDA interface circuit 8, and realizes network management control, in-system programming and wireless data delivery by communicating by letter between host computer and Duo Tai read-write equipment.
Consult Fig. 2, described MCU control circuit 1 comprises microcontroller MCU and auxiliary oscillator circuit, and described auxiliary oscillator circuit is connected with microcontroller MCU.Auxiliary oscillator circuit preferably is made of a crystal oscillator, two filter capacitors and a resistance, produces oscillator signal by auxiliary oscillator circuit and makes microcontroller MCU operate as normal.Described microcontroller MCU is the 89C51 integrated circuit (IC) chip.Described radio-frequency card read/write circuit 2 comprises the intelligent read integrated circuit and second auxiliary oscillator circuit, and described intelligent read integrated circuit is connected with second auxiliary oscillator circuit.Second auxiliary oscillator circuit preferably is made of a crystal oscillator, two filter capacitors and a resistance, produces oscillator signal by second auxiliary oscillator circuit and makes intelligent read integrated circuit operate as normal.Described intelligent read integrated circuit 21 is the RC632 integrated circuit (IC) chip.Described RC632 integrated circuit (IC) chip is carried out ISO/IEC 14443A, ISO/IEC 14443B and 15,693 three kinds of international standards of ISO/IEC.Described MUX 5, RS232, RS485 and IrDA interface circuit are made of standard integrated circuit modules or discrete component circuit.Described MUX 5 adopts 74LS 153 integrated circuit (IC) chip.Described RS232 serial interface circuit adopts the MAX232 integrated circuit (IC) chip.Described RS485 serial interface circuit adopts 75176 integrated circuit (IC) chip.Described IrDA interface circuit adopts the TSDF4500 integrated circuit (IC) chip.
The 89C51 chip is controlled the core integrated circuit RC632 operation of radio-frequency card read/write circuit 2 by sheet selected control system P1.0, read-write control W and R signal; RC632 in the radio-frequency card read/write circuit 2 is connected with radio-frequency card read-write antenna 3 with TX2 by RX, TX1, and radio frequency is sticked into capable read-write operation; RC632 sends data exchange request by IRQ to 89C51, and data is delivered to the P0 mouth of 89C51 through the D mouth; Judging radio-frequency card when MCU control circuit 1 is effectively, and data content handles storage to data when satisfying condition, and by radio-frequency card read/write circuit 2 data processed is write back radio-frequency card; The RXD of 89C51 and TXD are serial i/o ports, be connected to Za and the Zb of MUX 5 integrated circuit modules 74LS153, the I0a of 74LS153, I0b, I1a, I1b, I2a, I2b connect R, the D of standard RS485 integrated circuit modules 75176 respectively, RxD, the TxD of R10UT, the T1IN of standard RS232 integrated circuit modules MAX232 and standard I rDA integrated circuit modules TSDF4500; The P2.0-P2.3 of 89C51 connects S0, S1, Ea, the Eb of 74LS153 respectively, and being used for selecting its serial i/o port and RS232, RS485 still is that IrDA communicates by letter; The R1IN of 75176 B-, A+ and 74LS153, T10UT are connected with external circuit, and realization MCU control circuit 1 is communicated by letter with host computer, other read-write equipments and external network.Adopt single power supply 4Vcc, direct current+5V in the utility model.
Though the utility model illustrates and describes by the reference preferred embodiment,, those skilled in the art should understand, and in the scope of claims, can do the various variation on form and the details.

Claims (7)

  1. One kind have three communication interfaces the radio-frequency card read-write equipment, comprise the MCU control circuit, the radio-frequency card read/write circuit, antenna and power supply, the control output end of MCU control circuit is connected in the input end of radio-frequency card read/write circuit, the address data bus of MCU control circuit is connected with the address data bus of radio-frequency card read/write circuit, described MCU control circuit all is connected with power supply with the radio-frequency card read/write circuit, the signal wire of radio-frequency card read/write circuit links to each other with antenna, it is characterized in that: also comprise MUX, the RS232 serial interface circuit, the RS485 serial interface circuit, the IrDA interface circuit, the serial port of MCU control circuit is connected with MUX, the RS232 serial interface circuit, the signal of communication port of RS485 serial interface circuit and IrDA interface circuit all is connected with MUX.
  2. 2. a kind of radio-frequency card read-write equipment that has three communication interfaces as claimed in claim 1, it is characterized in that: described MCU control circuit comprises microcontroller MCU and auxiliary oscillator circuit, described auxiliary oscillator circuit is connected with microcontroller MCU.
  3. 3. a kind of radio-frequency card read-write equipment that has three communication interfaces as claimed in claim 2, it is characterized in that: described microcontroller MCU is the 89C51 integrated circuit (IC) chip.
  4. 4. a kind of radio-frequency card read-write equipment that has three communication interfaces as claimed in claim 1, it is characterized in that: described radio-frequency card read/write circuit comprises the intelligent read integrated circuit and second auxiliary oscillator circuit, and described intelligent read integrated circuit is connected with second auxiliary oscillator circuit.
  5. 5. a kind of radio-frequency card read-write equipment that has three communication interfaces as claimed in claim 4, it is characterized in that: described intelligent read integrated circuit is the RC632 integrated circuit (IC) chip.
  6. 6. a kind of radio-frequency card read-write equipment that has three communication interfaces as claimed in claim 5, it is characterized in that: described RC632 integrated circuit (IC) chip is carried out ISO/IEC 14443A, ISO/IEC 14443B and 15,693 three kinds of international standards of ISO/IEC.
  7. 7. as each described a kind of radio-frequency card read-write equipment that has three communication interfaces in the claim 1 to 6, it is characterized in that: described RS232 serial interface circuit, RS485 serial interface circuit and IrDA interface circuit are made of standard integrated circuit modules or discrete component circuit.
CN2009201985081U 2009-09-30 2009-09-30 Radio-frequency card read-write device with three communication interfaces Expired - Fee Related CN201522716U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2009201985081U CN201522716U (en) 2009-09-30 2009-09-30 Radio-frequency card read-write device with three communication interfaces

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2009201985081U CN201522716U (en) 2009-09-30 2009-09-30 Radio-frequency card read-write device with three communication interfaces

Publications (1)

Publication Number Publication Date
CN201522716U true CN201522716U (en) 2010-07-07

Family

ID=42508893

Family Applications (1)

Application Number Title Priority Date Filing Date
CN2009201985081U Expired - Fee Related CN201522716U (en) 2009-09-30 2009-09-30 Radio-frequency card read-write device with three communication interfaces

Country Status (1)

Country Link
CN (1) CN201522716U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105425669A (en) * 2015-11-16 2016-03-23 珠海格力电器股份有限公司 Communication interface circuit and control method thereof, and household electrical appliance using same

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105425669A (en) * 2015-11-16 2016-03-23 珠海格力电器股份有限公司 Communication interface circuit and control method thereof, and household electrical appliance using same
CN105425669B (en) * 2015-11-16 2018-06-29 珠海格力电器股份有限公司 Communication interface circuit and its control method and apply its household electrical appliance

Similar Documents

Publication Publication Date Title
CN102768781B (en) NFC (Near Field Communication) mobile phone electronic lock control system and NFC mobile phone electronic lock control device
CN203287939U (en) Mobile payment full-card supporting single-wire transport protocol
CN201583984U (en) Separable non-contact card device
CN201689443U (en) RFID read-write device based on 3G network
CN201004233Y (en) A RF card reading device with RS485 interface
CN201465131U (en) Multi-standard radio frequency card read-write device capable of updating program in system
CN201522716U (en) Radio-frequency card read-write device with three communication interfaces
CN102402704B (en) Compound multifunctional IC card reader-writer
CN201553906U (en) Fingerprint recognition controller of public washing machine
CN202486793U (en) Card reading equipment with Bluetooth channel
CN203444488U (en) ISO7816 standard IC card and non-contact intelligent card reading module
CN201465148U (en) Radio-frequency card read/write device
CN2779494Y (en) A multi-standard RF card reader-writer
CN201408439Y (en) External smart card
CN204631913U (en) RFID multifrequency development system
CN201084154Y (en) RFID reader
CN202495051U (en) Three-in-one second generation identity card reader
CN200979696Y (en) A RF card reading and writing device with an IRDA interface
CN2685984Y (en) Non-contact smart card reading and writing device
CN104537749A (en) RFID-based ticket checking system
CN202373005U (en) Compound multifunctional integrated circuit (IC) card reader-writer
CN202383703U (en) Wireless memory card reader
CN204706047U (en) A kind of RFID card reader for high fail-safe computer
CN206282319U (en) A kind of intermediary message service charge collection system based on Internet of Things
CN203299829U (en) Active RFID system

Legal Events

Date Code Title Description
GR01 Patent grant
C14 Grant of patent or utility model
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20100707

Termination date: 20100930

C17 Cessation of patent right