CN201946018U

CN201946018U - High-frequency RFID (radio frequency identification) read-write device with USB 1.1 interface

Info

Publication number: CN201946018U
Application number: CN2011200374815U
Authority: CN
Inventors: 周蕾; 朱全银
Original assignee: Huaiyin Institute of Technology
Current assignee: Huaiyin Institute of Technology
Priority date: 2011-02-14
Filing date: 2011-02-14
Publication date: 2011-08-24
Anticipated expiration: 2021-02-14

Abstract

The utility model discloses a High-frequency RFID (radio frequency identification) read-write device with a USB 1.1 interface, which transmits a radio-frequency signal with specific frequency of 13.56 MHz through a transmitting antenna, and induction current is generated when a target object with an electronic tag enters the working area of the transmitting antenna; the receiving antenna of the read-write device receives a modulating signal transmitted by the tag, transmits the modulating signal to the signal acquisition module of the read-write device through an antenna regulator, and sends effective information to a data processing module for relevant processing after the modulating signal is demodulated and decoded; and the data processing module identifies the identification of the tag according to logical operation so as to make corresponding processing and controlling, finally sends an instruction signal to control the read-write device to complete different read-write operations, and stores the identification data of the tag into a storage chip or outputs the data through a USB 1.1 output interface and a wiegand protocol interface. The read-write device has small volume, low cost, low energy consumption and fast read-write speed, realizes non-contact read-write and storage and output of a plurality of passive radio-frequency tags, and has strong capacity of resisting disturbance and good security.

Description

A kind of USB1.1 interface high-frequency RF ID read-write equipment

Technical field

The utility model relates to read write line, is specifically related to a kind of USB1.1 interface high-frequency RF ID read-write equipment.

Background technology

The RFID technology is to begin a kind of automatic identification technology of rising and moving to maturity gradually the nineties in 20th century.It utilizes radiofrequency signal to realize the non-contact information transmission by the space coupling, and the information of passing through to be transmitted reaches the purpose of identification.Basic rfid system is made up of electronic tag, read write line, antenna and background host computer system.RFID has been thought to realize a kind of major technique of general calculation entironment by most of people, it is application scenarios widely, and cheap cost is disposed the simplicity of implementing, and has attracted user, researchist and IT vendor more and more.

Summary of the invention

The purpose of this utility model is: a kind of USB1.1 interface high-frequency RF ID read-write equipment is provided, read the passive label radiofrequency signal that receives from external antenna, export to single-chip microcomputer after treatment, the signal that single-chip microcomputer receives gets the identity information of outgoing label after treatment, export to the computing machine that has USB HOST interfacing equipment or have USB interface by the USB1.1 interface, use as various computer data acquiring or management information system based on electronic tag.

Technical solution of the present utility model is: the radiofrequency signal that is sent the 13.56MHz characteristic frequency by read-write equipment by emitting antenna, when entering the emitting antenna perform region, the destination object that adheres to electronic tag produces induction current, be activated thereby obtain energy, make electronic tag that self coded message is sent by built-in radio-frequency antenna; The receiving antenna of read-write equipment receives the modulation signal that sends from label, is sent to the read write line signal acquisition module through the antenna adjustments device, behind the demodulation sign indicating number effective information is delivered to data processing module and carries out relevant treatment; Data processing module is discerned the identity of this label according to logical operation, make corresponding processing and control at different settings, finally send command signal control read-write equipment and finish different read-write operations, and the Identity data store of label is exported in storer or by USB1.1 output interface, Wei root protocol interface.

Read-write equipment of the present utility model comprises U1 part, U2 part and U3 part, and U1 part, U2 part and U3 partly are interconnected to constitute the circuit of read-write equipment; The U1 part is finished the processing of input signal and the output of control signal based on AT89S52; The U2 part is finished the read-write and the processing of radiofrequency signal generation, transmission and electronic tag signal based on RC500; The U3 part is finished the USB1.1 interface output of electronic tag data based on PDUSBD12; Wherein, physical circuit connects as follows:

U1 part (AT89S52):

The 1st pin of AT89S52 is connected to the 11st pin of PDUSBD12; The 2nd pin to the 4 pins of AT89S52 are unsettled; The 5th pin of AT89S52 is connected to the 31st pin of RC500; The 6th pin of AT89S52 is connected to the 4th pin of J3; The 7th pin of AT89S52 is connected to the 5th pin of J3; The 8th pin of AT89S52 is connected to the 6th pin of J3; The 9th pin of AT89S52 is connected to the 20th pin of PDUSBD12 and an end and the CD1 negative pole of R16, the other end ground connection of R16, and the CD1 positive pole connects power supply; The 10th pin of AT89S52 is unsettled; The 11st pin of AT89S52 is unsettled; The 12nd pin of AT89S52 is connected to the 2nd pin of RC500; The 13rd pin of AT89S52 is connected to the 14th pin of PDUSBD12 and the end of R11, another termination power of R11; The 14th pin and the 15th pin of AT89S52 are unsettled; The 16th pin of AT89S52 is connected to the 10th pin of RC500 and the 16th pin of PDUSBD12; The 17th pin of AT89S52 is connected to the 11st pin of RC500 and the 15th pin of PDUSBD12; The 18th pin of AT89S52 is connected to C3 and Y2, C3 other end ground connection, the 19th pin of Y2 another termination C4 and AT89S52; The 19th pin of AT89S52 is connected to C4 and Y2, C4 other end ground connection, the 18th pin of Y2 another termination C3 and AT89S52; The 21st pin of AT89S52 is connected to the 1st pin of J1; The 22nd pin of AT89S52 is connected to the 2nd pin of J1; The 23rd pin of AT89S52 is connected to the 3rd pin of J1; The 24th pin of AT89S52 is connected to the 4th pin of J1; The 25th pin of AT89S52 is connected to the 5th pin of J1; The 26th pin of AT89S52 is connected to the 6th pin of J1; The 27th pin of AT89S52 is connected to the 7th pin of J1; The 28th pin of AT89S52 is connected to the 9th pin of RC500; The 29th pin of AT89S52 is unsettled; The 30th pin of AT89S52 is connected to the 21st pin of RC500 and the 10th pin of PDUSBD12; The 31st pin of AT89S52 connects power supply; The 32nd pin of AT89S52 is connected to the 20th pin of RC500 and the 9th pin of PDUSBD12; The 33rd pin of AT89S52 is connected to the 19th pin of RC500 and the 8th pin of PDUSBD12; The 34th pin of AT89S52 is connected to the 18th pin of RC500 and the 7th pin of PDUSBD12; The 35th pin of AT89S52 is connected to the 17th pin of RC500 and the 6th pin of PDUSBD12; The 36th pin of AT89S52 is connected to the 16th pin of RC500 and the 4th pin of PDUSBD12; The 37th pin of AT89S52 is connected to the 15th pin of RC500 and the 3rd pin of PDUSBD12; The 38th pin of AT89S52 is connected to the 14th pin of RC500 and the 2nd pin of PDUSBD12; The 39th pin of AT89S52 is connected to the 13rd pin of RC500 and the 1st pin of PDUSBD12;

U2 part (RC500):

The 1st pin of RC500 meets C5 and Y1, C5 other end ground connection, the 32nd pin of Y1 another termination C6 and RC500; The 2nd pin of RC500 is connected to the 12nd pin of AT89S52; The 3rd pin of RC500 is unsettled; The 4th pin of RC500 is unsettled; The 5th pin of RC500 meets L3, the 1st pin of L3 another termination C7 and J2, C7 other end ground connection; The 6th pin of RC500 meets L2 and C2, C2 other end ground connection, another termination power of L2; The 7th pin of RC500 meets L4, the 3rd pin of L4 another termination C8 and J2, C8 other end ground connection; The 8th pin ground connection of RC500; The 9th pin of RC500 is connected to the 28th pin of AT89S52; The 10th pin of RC500 is connected to the 16th pin of AT89S52 and the 16th pin of PDUSBD12; The 11st pin of RC500 is connected to the 17th pin of AT89S52 and the 15th pin of PDUSBD12; The 12nd pin ground connection of RC500; The 13rd pin of RC500 is connected to the 39th pin of AT89S52 and the 1st pin of PDUSBD12; The 14th pin of RC500 is connected to the 38th pin of AT89S52 and the 2nd pin of PDUSBD12; The 15th pin of RC500 is connected to the 37th pin of AT89S52 and the 3rd pin of PDUSBD12; The 16th pin of RC500 is connected to the 36th pin of AT89S52 and the 4th pin of PDUSBD12; The 17th pin of RC500 is connected to the 35th pin of AT89S52 and the 6th pin of PDUSBD12; The 18th pin of RC500 is connected to the 34th pin of AT89S52 and the 7th pin of PDUSBD12; The 19th pin of RC500 is connected to the 33rd pin of AT89S52 and the 8th pin of PDUSBD12; The 20th pin of RC500 is connected to the 32nd pin of AT89S52 and the 9th pin of PDUSBD12; The 21st pin of RC500 is connected to the 30th pin of AT89S52 and the 10th pin of PDUSBD12; The 22nd pin of RC500 connects power supply; The 23rd pin of RC500 connects power supply; The 24th pin ground connection of RC500; The 25th pin of RC500 connects power supply; The 26th pin of RC500 is connected to the end of C1, L1, C1 other end ground connection, another termination power of L1; The 27th pin of RC500 is unsettled; The 28th pin ground connection of RC500; The 29th pin of RC500 is connected to the end of R6 and R7, and the R6 other end is connected to the 30th pin of RC500 and the end of C10, the other end ground connection of C10, and the end of another termination C9 of R7, the other end of C9 is connected to the 4th pin of J2; The 30th pin of RC500 is connected to R6 and C10; The 31st pin of RC500 is connected to the 5th pin of AT89S52; The 32nd pin of RC500 is connected to and meets C6 and Y1, C6 other end ground connection, the 1st pin of Y1 another termination C5 and RC500;

U3 part (PDUSBD12):

The 1st pin of PDUSBD12 is connected to the 39th pin of AT89C2051 and the 13rd pin of RC500; The 2nd pin of PDUSBD12 is connected to the 38th pin of AT89C2051 and the 14th pin of RC500; The 3rd pin of PDUSBD12 is connected to the 37th pin of AT89C2051 and the 15th pin of RC500; The 4th pin of PDUSBD12 is connected to the 36th pin of AT89C2051 and the 16th pin of RC500; The 5th pin ground connection of PDUSBD12; The 6th pin of PDUSBD12 is connected to the 35th pin of AT89C2051 and the 17th pin of RC500; The 7th pin of PDUSBD12 is connected to the 34th pin of AT89C2051 and the 18th pin of RC500; The 8th pin of PDUSBD12 is connected to the 33rd pin of AT89C2051 and the 19th pin of RC500; The 9th pin of PDUSBD12 is connected to the 32nd pin of AT89C2051 and the 20th pin of RC500; The 10th pin of PDUSBD12 is connected to the 30th pin of AT89C2051 and the 21st pin of RC500; The 11st pin of PDUSBD12 is connected to the 1st pin of AT89C2051; The 12nd pin of PDUSBD12 is connected to the end of R10, another termination power of R10; The 14th pin of PDUSBD12 is connected to the 13rd pin of AT89C2051 and the end of R11, another termination power of R10; The 15th pin of PDUSBD12 is connected to the 17th pin of AT89C2051 and the 11st pin of RC500; The 16th pin of PDUSBD12 is connected to the 16th pin of AT89C2051 and the 10th pin of RC500; The 18th pin of PDUSBD12 is connected to the end of R15, another termination power of R15; The 19th pin of PDUSBD12 is connected to the end of R13 and R14, another termination power of R13, the other end ground connection of R14; The 20th pin of PDUSBD12 is connected to the 9th pin of AT89C2051; The 21st pin of PDUSBD12 connects the negative pole of LED2, and the positive pole of LED2 connects the end of R12, another termination power of R12; The 22nd pin of PDUSBD12 connects the end of Y3 and C13, the other end ground connection of C13, the end of another termination C12 of Y3 and the 23rd pin of PDUSBD12, the other end ground connection of C12; The 24th pin of PDUSBD12 connects power supply; The 25th pin of PDUSBD12 connects the end of R8, the end of another termination R4 of R8 and the 2nd pin of J4, the other end ground connection of R4; The 26th pin of PDUSBD12 connects the end of R9, the end of another termination R3 of R9 and the 3rd pin of J4, the other end ground connection of R3; The 27th pin of PDUSBD12 connects the positive pole of CD2 and the end of C11, the other end ground of the negative pole of CD2 and C11; The 28th pin of PDUSBD12 connects the end of R2, the other end ground connection of R2.

Wherein, connect input interface and output interface on the circuit of the present utility model and finish signals collecting and data output, input interface is a rf input interface, and output interface comprises USB1.1 output interface, Wei root agreement output interface.

The utlity model has following advantage: 1, the acp chip of the passive label radiofrequency signal data acquisition module in the read-write equipment is the RC500 chip, is 32 pin integrated chips, and function is strong, and is low in energy consumption, is operated in the 13.56MHz high band; The acp chip of data processing module is the AT89S52 chip, and it has 32 programmable Is/O mouth, and compatible fully with the MCS-51 instruction, and inner attaching has the RAM of 256B available, and the erasable FLASH of 8KB etc. is arranged; In this device, be stored in the AT89S52 chip, also can pass through USB1.1 output interface, the output of Wei root protocol interface through the electronic tag data after the AT89S52 processing; The USB1.1 transport module uses the PDUSBD12 device, and the conversion that this USB1.1 transmission equipment can be finished also-go here and there makes the signal of handling be transferred in the computing machine by USB interface and handles; The chip price of this read-write equipment circuit is cheap, and chip pin is few, and circuit is simple.

2, the volume of this read-write equipment is little, and cost is low, and is low in energy consumption, and read or write speed is fast, realize contactless read-write and the storage and the output of a plurality of passive label radio-frequency (RF) tag, and antijamming capability is strong, and security performance is good.

Description of drawings

Fig. 1 is circuit theory diagrams of the present utility model

Embodiment

Further specify technical solution of the present utility model below in conjunction with accompanying drawing.

As shown in Figure 1, read-write equipment comprises U1 part, U2 part and U3 part, and U1 part, U2 part and U3 partly are interconnected to constitute the circuit of read-write equipment, and wherein, physical circuit connects as follows:

U1 part (AT89S52):

U2 part (RC500):

U3 part (PDUSBD12):

The explanation of product running environment:

The development system environment:

Windows?XP?Professional(Build?2600.xpsp_sp2_gdr.050301-1510(Service?Pack?2))

Exploitation programmed environment: Keil C51 programming language

Claims

1. USB1.1 interface high-frequency RF ID read-write equipment, it is characterized in that: the radiofrequency signal that sends the 13.56MHz characteristic frequency by read-write equipment by emitting antenna, when entering the emitting antenna perform region, the destination object that adheres to electronic tag produces induction current, be activated thereby obtain energy, make electronic tag that self coded message is sent by built-in radio-frequency antenna; The receiving antenna of read-write equipment receives the modulation signal that sends from label, is sent to the read write line signal acquisition module through the antenna adjustments device, behind the demodulation sign indicating number effective information is delivered to data processing module and carries out relevant treatment; Data processing module is discerned the identity of this label according to logical operation, make corresponding processing and control at different settings, finally send command signal control read write line and finish different read-write operations, and the Identity data store of label is exported in storage chip or by USB1.1 output interface, Wei root protocol interface.

2. a kind of USB1.1 interface high-frequency RF ID read-write equipment according to claim 1 is characterized in that: read write line comprises U1 part, U2 part and U3 part, and U1 part, U2 part and U3 partly are interconnected to constitute the circuit of read-write equipment; The U1 part is finished the processing of input signal and the output of control signal based on AT89S52; The U2 part is finished the read-write and the processing of radiofrequency signal generation, transmission and electronic tag signal based on RC500; The U3 part is finished the USB1.1 interface output of electronic tag data based on PDUSBD12; Wherein, physical circuit connects as follows:

U1 part (AT89S52):

U2 part (RC500):

U3 part (PDUSBD12):

3. a kind of USB1.1 interface high-frequency RF ID read-write equipment according to claim 2, it is characterized in that: wherein, connect input interface and output interface on the circuit of read-write equipment and finish signals collecting and data output, input interface is a rf input interface, and output interface comprises USB1.1 output interface, Wei root agreement output interface.