CN205158407U

CN205158407U - GRRS interface attendance data communication device

Info

Publication number: CN205158407U
Application number: CN201520989446.1U
Authority: CN
Inventors: 朱竑见
Original assignee: Chongqing University
Current assignee: Chongqing University
Priority date: 2015-11-28
Filing date: 2015-11-28
Publication date: 2016-04-13
Anticipated expiration: 2025-11-28

Abstract

The utility model discloses a GRRS interface attendance data communication device, including circuit U1 part, circuit U2 subtotal circuit U3 part, circuit U1 part, circuit U2 subtotal circuit U3 part interconnect constitute attendance data communication device, circuit U1 part is given first place to with singlechip AT89S52, accomplishes incoming signal's processing and control signal's output, circuit U2 part is given first place to with chip RC531, accomplishes the production of radio frequency IC -card signal, sends and read and write and handle with IC identity label card's data, circuit U3 part is given first place to with chip SIM900, accomplishes IC identity labeled data's GPRS interface outlet. This device small, with low costs, the low power dissipation realize non -contact reading and writing, storage and the GPIS interface outlet of a plurality of passive label radio frequency IC -card of two kinds of standards of type A and type B, and the interference killing feature is strong, and the security ability is good.

Description

A kind of GRRS interface attendance data communicator

Technical field

The utility model relates to data communication equipment (DCE), is specifically related to a kind of GRRS interface attendance data communicator.

Background technology

Radio-frequency (RF) tag data acquisition technology starts the nineties in 20th century to rise and a kind of identity recognizing technology moved to maturity gradually.It utilizes radiofrequency signal to realize non-contact information transmission by Space Coupling, and passes through the object that transmitted information reaches identification identity.Basic radio frequency identification systems is made up of electronic label card, read write line, antenna and backstage microsystem.Wherein RFID is thought by most people a kind of major technique realizing general calculation entironment, and it is application scenarios widely, cheap cost, disposes the simplicity implemented, attracts user, researchist and IT vendor more and more.

Summary of the invention

The purpose of this utility model is: provide a kind of GRRS interface attendance data communicator, read the passive label card radiofrequency signal received from external antenna, export to single-chip microcomputer after treatment, the signal that single-chip microcomputer receives draws the identity information of label card after treatment, connection computing machine is on internet exported to by GPRS interface, use as the various calculating attendance checking system based on electronic tag ID (identity number) card, and support the identity IC-card of TypeA and TypeB two kinds of 13.56MHz patterns.

Technical solution of the present utility model is: the radiofrequency signal being sent 13.56MHz characteristic frequency by card reading circuit by emitting antenna, induction current is produced when the destination object adhering to IC tag card enters emitting antenna perform region, thus acquisition energy is activated, and makes IC tag card self coded message be sent by built-in rf antenna; The receiving antenna of card reading circuit receives the modulation signal sent from label card, is sent to card reading circuit data acquisition module through antenna adjustments device, effective information is delivered to data processing module after demodulation code and carries out relevant treatment; Data processing module is according to the identity of this IC tag card of logical operation identification, make corresponding process for setting in advance and control, finally send command signal control card reading circuit and complete different read-write operations, and the identity data of IC tag card and access time storage are exported in memory or by GPRS output interface.

A kind of GRRS interface attendance data communicator of the present utility model comprises circuit U 1 part, circuit U 2 part and circuit U 3 part, and circuit U 1 part, U2 part and U3 part are interconnected to constitute attendance data communicator; Circuit U 1 part, based on AT89S52 single board computer, completes the process of input signal and the output of control signal; Circuit U 2 part, based on chip RC531, completes radio-frequency (RF) IC card signal and produces, sends and the reading and writing data of IC identity label card and process; Circuit U 3 part is based on chip SIM900, and the GPRS interface completing IC identity label data exports; Wherein, physical circuit connects as follows:

Circuit U 1 part:

1st pin of AT89S52 single board computer is connected to the 16th pin of chip SIM900; 2nd pin of AT89S52 single board computer is connected to the 46th pin of chip SIM900; 3rd pin of AT89S52 single board computer is connected to the 14th pin of chip SIM900; 4th pin of AT89S52 single board computer is connected to the 13rd pin of chip SIM900; 5th pin of AT89S52 single board computer is connected to the 31st pin of chip RC531; 6th pin of AT89S52 single board computer is connected to the 4th pin of J3; 7th pin of AT89S52 single board computer is connected to the 5th pin of J3; 8th pin of AT89S52 single board computer is connected to the 6th pin of J3; 9th pin of AT89S52 single board computer is connected to one end and the electric capacity CD1 negative pole of resistance R16, the other end ground connection of resistance R16, and electric capacity CD1 positive pole meets power supply VCC; 10th pin and the 11st pin of AT89S52 single board computer are unsettled; 12nd pin of AT89S52 single board computer is connected to the 2nd pin of chip RC531; 13rd pin of AT89S52 single board computer is unsettled to the 15th pin; 16th pin of AT89S52 single board computer is connected to the 10th pin of chip RC531; 17th pin of AT89S52 single board computer is connected to the 11st pin of chip RC531; 18th pin of AT89S52 single board computer is connected to one end of electric capacity C3 and crystal oscillator Y2, electric capacity C3 other end ground connection, the 19th pin of another termination capacitor C4 one end of crystal oscillator Y2 and AT89S52 single board computer; 19th pin of AT89S52 single board computer is connected to electric capacity C4 and crystal oscillator Y2, electric capacity C4 other end ground connection, the 18th pin of another termination capacitor C3 of crystal oscillator Y2 and AT89S52 single board computer; 21st pin of AT89S52 single board computer is connected to the 1st pin of J1; 22nd pin of AT89S52 single board computer is connected to the 2nd pin of J1; 23rd pin of AT89S52 single board computer is connected to the 3rd pin of J1; 24th pin of AT89S52 single board computer is connected to the 4th pin of J1; 25th pin of AT89S52 single board computer is connected to the 5th pin of J1; 26th pin of AT89S52 single board computer is connected to the 6th pin of J1; 27th pin of AT89S52 single board computer is connected to the 7th pin of J1; 28th pin of AT89S52 single board computer is connected to the 9th pin of chip RC531; 29th pin of AT89S52 single board computer is unsettled; 30th pin of AT89S52 single board computer is connected to the 21st pin of chip RC531; 31st pin of AT89S52 single board computer meets power supply VCC; 32nd pin of AT89S52 single board computer is connected to the 20th pin of chip RC531; 33rd pin of AT89S52 single board computer is connected to the 19th pin of chip RC531; 34th pin of AT89S52 single board computer is connected to the 18th pin of chip RC531; 35th pin of AT89S52 single board computer is connected to the 17th pin of chip RC531; 36th pin of AT89S52 single board computer is connected to the 16th pin of chip RC531; 37th pin of AT89S52 single board computer is connected to the 15th pin of chip RC531; 38th pin of AT89S52 single board computer is connected to the 14th pin of chip RC531; 39th pin of AT89S52 single board computer is connected to the 13rd pin of chip RC531;

Circuit U 2 part:

1st pin of chip RC531 connects one end of electric capacity C5 and crystal oscillator Y1, electric capacity C5 other end ground connection, the 32nd pin of another termination capacitor C6 one end of crystal oscillator Y1 and chip RC531, the other end ground connection of electric capacity C6; 2nd pin of chip RC531 is connected to the 12nd pin of AT89S52 single board computer; 3rd pin and the 4th pin of chip RC531 are unsettled; 5th pin of chip RC531 connects one end of inductance L 3, the 1st pin of another termination capacitor C7 one end of inductance L 3 and J2, electric capacity C7 other end ground connection; 6th pin of chip RC531 connects one end of inductance L 2 and electric capacity C2, electric capacity C2 other end ground connection, another termination power of inductance L 2 VCC; 7th pin of chip RC531 connects inductance L 4 one end, the 3rd pin of another termination capacitor C8 one end of inductance L 4 and J2, electric capacity C8 other end ground connection; The 8th pin ground connection of chip RC531; 9th pin of chip RC531 is connected to the 28th pin of AT89S52 single board computer; 10th pin of chip RC531 is connected to the 16th pin of AT89S52 single board computer; 11st pin of chip RC531 is connected to the 17th pin of AT89S52 single board computer; The 12nd pin ground connection of chip RC531; 13rd pin of chip RC531 is connected to the 39th pin of AT89S52 single board computer; 14th pin of chip RC531 is connected to the 38th pin of AT89S52 single board computer; 15th pin of chip RC531 is connected to the 37th pin of AT89S52 single board computer; 16th pin of chip RC531 is connected to the 36th pin of AT89S52 single board computer; 17th pin of chip RC531 is connected to the 35th pin of AT89S52 single board computer; 18th pin of chip RC531 is connected to the 34th pin of AT89S52 single board computer; 19th pin of chip RC531 is connected to the 33rd pin of AT89S52 single board computer; 20th pin of chip RC531 is connected to the 32nd pin of AT89S52 single board computer; 21st pin of chip RC531 is connected to the 30th pin of AT89S52 single board computer; 22nd pin of chip RC531 meets power supply VCC; 23rd pin of chip RC531 connects power supply; The 24th pin ground connection of chip RC531; 25th pin of chip RC531 meets power supply VCC; 26th pin of chip RC531 is connected to one end of electric capacity C1 and inductance L 1, electric capacity C1 other end ground connection, another termination power of inductance L 1 VCC; 27th pin of chip RC531 is unsettled; The 28th pin ground connection of chip RC531; 29th pin of chip RC531 is connected to one end of resistance R6 and resistance R7, the resistance R6 other end is connected to the 30th pin of chip RC531 and one end of electric capacity C10, the other end ground connection of electric capacity C10, one end of another termination capacitor C9 of resistance R7, the other end of electric capacity C9 is connected to the 4th pin of J2; 30th pin of chip RC531 is connected to one end of resistance R6 and electric capacity C10; 31st pin of chip RC531 is connected to the 5th pin of AT89S52 single board computer; 32nd pin of chip RC531 is connected to the one end meeting electric capacity C6 and crystal oscillator Y1, electric capacity C6 other end ground connection, the 1st pin of another termination capacitor C5 of crystal oscillator Y1 and chip RC531;

Circuit U 3 part:

1st pin of chip SIM900 is unsettled to the 12nd pin; 13rd pin of chip SIM900 is connected to the 4th pin of AT89S52 single board computer; 14th pin of chip SIM900 is connected to the 3rd pin of AT89S52 single board computer; 15th pin of chip SIM900 is unsettled; 16th pin of chip SIM900 is connected to the 1st pin of AT89S52 single board computer; The 17th pin ground connection of chip SIM900; 18th pin of chip SIM900 is unsettled to the 45th pin; 46th pin of chip SIM900 is connected to the 2nd pin of AT89S52 single board computer; 47th pin of chip SIM900 is unsettled; 48th pin of chip SIM900 meets power supply VCC.

The utility model has the following advantages: 1, the acp chip of the passive label radiofrequency signal data acquisition module of card reading circuit is RC531 chip, be 32 pin integrated chips, function is strong, low in energy consumption, be operated in 13.56MHz high band, support TypeA and TypeB two kinds of 13.56MHz high band IC-cards; The acp chip of data processing module is AT89S52 chip, and it has 32 programmable Is/O mouth, and completely compatible with MCS-51 instruction, and the RAM that inside is accompanied with 256B is available, has the erasable FLASH etc. of 8KB; In this card reader, the IC tag data after AT89S52 process are stored in AT89S52 chip, also can pass through GPRS output interface, Wiegand protocol interface exports; The chip price of the circuit of this card reader is cheap, and chip pin is few, and circuit is simple.

2, the volume of this card reader is little, and cost is low, low in energy consumption, and realize the contactless read-write of multiple passive label radio-frequency (RF) IC card of TypeA and TypeB two kinds of standards and storage and output, and antijamming capability is strong, security performance is good.

Accompanying drawing explanation

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

Embodiment

Technical solution of the present utility model is further illustrated below in conjunction with accompanying drawing.

As shown in Figure 1, device comprises circuit U 1 part, circuit U 2 part and circuit U 3 part, and circuit U 1 part, circuit U 2 part and circuit U 3 part are interconnected to constitute the circuit of attendance data communicator, and wherein, physical circuit connects as follows:

Circuit U 1 part:

Circuit U 2 part:

Circuit U 3 part:

Product running environment: attendance data transmission system.

Claims

1. a GRRS interface attendance data communicator, is characterized in that: comprise circuit U 1 part, circuit U 2 part and circuit U 3 part, and circuit U 1 part, U2 part and U3 part are interconnected to constitute attendance data communicator; Circuit U 1 part, based on AT89S52 single board computer, completes the process of input signal and the output of control signal; Circuit U 2 part, based on chip RC531, completes radio-frequency (RF) IC card signal and produces, sends and the reading and writing data of IC identity label card and process; Circuit U 3 part is based on chip SIM900, and the GPRS interface completing IC identity label data exports; Wherein, physical circuit connects as follows:

Circuit U 1 part:

Circuit U 2 part:

Circuit U 3 part: