CN202189372U

CN202189372U - Passive RFID (radio frequency identification) reader

Info

Publication number: CN202189372U
Application number: CN2011202826944U
Authority: CN
Inventors: 米庆甯
Original assignee: SHANGHAI AIGEWEN INFORMATION TECHNOLOGY CO LTD
Current assignee: SHANGHAI AIGEWEN INFORMATION TECHNOLOGY CO LTD
Priority date: 2011-08-05
Filing date: 2011-08-05
Publication date: 2012-04-11
Anticipated expiration: 2021-08-05

Abstract

The utility model discloses a passive RFID (radio frequency identification) reader which comprises a proximity card reading unit, a data processing unit and an RS232/485 communication interface. The input end of the data processing unit is connected with a key processing unit through a data bus, the clock end is connected with a real-time clock unit through a clock bus, and the output end is connected with a data displaying unit, a buzzer and an indication lamp through data buses. The passive RFID reader is connected with the key processing unit and the data displaying unit through the data buses and connected with the real-time clock unit through the clock bus, thereby the displaying and inputting functions of the passive RFID reader are expanded, and the reading speed is not affected.

Description

A kind of passive RFID card reader

Technical field

The utility model relates to a kind of card reader, relates in particular to a kind of passive RFID card reader.

Background technology

RFID (Radio Frequency IDentification) is a kind of simple wireless system, is made up of an interrogator (or reader) and a lot of transponder (or label).RF techniques make use wireless radio frequency mode is carried out the noncontact bi-directional transfer of data between reader and radio-frequency card, to reach the purpose of Target Recognition and exchanges data.1), label (Tag, i.e. radio-frequency card) the most basic RF system is made up of three parts:: be made up of coupling element and chip, label contains built-in aerial, be used for and radio-frequency antenna between communicate; 2), reader: the equipment that reads (in read-write card, can also write) label information; 3), radio-frequency antenna: between label and reader, transmit radiofrequency signal.

The RFID card reader is to read the electronic equipment of RFID label information, and existing RFID card reader mostly only comprises contactless card reading unit, data processing unit, three elementary cells of RS232/485 communication interface, and function ratio is more single.Some manufacturer is just made the RFID card reader into after the basis of attendance recorder has added data display unit, real-time clock unit, keyboard processing unit, this card reader reading speed is slow.Therefore, be necessary existing passive RFID card reader is improved.

Summary of the invention

The utility model technical matters to be solved provides a kind of passive RFID card reader, can expand demonstration and input function and not influence reading speed.

The utility model is to solve the problems of the technologies described above the technical scheme that adopts to provide a kind of passive RFID card reader; Comprise contactless card reading unit, data processing unit and RS232/485 communication interface; Wherein, The input end of said data processing unit links to each other with the button processing unit through data bus, and clock end links to each other with the real-time clock unit through clock bus, and the output terminal of said data processing unit links to each other with data display unit, hummer, pilot lamp through data bus.

Above-mentioned passive RFID card reader, wherein, said data display unit is light emitting diode (LED) display screen or LCDs.

Above-mentioned passive RFID card reader, wherein, said contactless card reading unit is integrated circuit card reader or identification card reader.

The utility model contrast prior art has following beneficial effect: the passive RFID card reader that the utility model provides; Connect button processing unit and data display unit through data bus; Connect the real-time clock unit through clock bus, thus expansion demonstration and input function and do not influence reading speed.

Description of drawings

Fig. 1 is the passive RFID card reader structural representation of the utility model;

Fig. 2 is that the passive RFID card reader of the utility model is formed synoptic diagram.

Among the figure:

10 contactless card reading units, 11 data processing units, 12 RS232/485 communication interfaces

13 data display unit, 14 button processing units, 15 data storage cells

16 real-time clock unit, 17 hummers, 18 pilot lamp

Embodiment

Below in conjunction with accompanying drawing and embodiment the utility model is done further to describe.

Fig. 1 is the passive RFID card reader structural representation of the utility model; Fig. 2 is that the passive RFID card reader of the utility model is formed synoptic diagram.

See also Fig. 1 and Fig. 2; The passive RFID card reader that the utility model provides comprises contactless card reading unit 10, data processing unit 11 and RS232/485 communication interface 12; Wherein, The input end of said data processing unit 11 links to each other with button processing unit 14 through data bus, and clock end links to each other with real-time clock unit 16 through clock bus, and the output terminal of said data processing unit 11 links to each other with data display unit 13, hummer 17, pilot lamp 18 through data bus; Data processing unit 11 can also be connected with data storage cell 15.Data display unit 11 is preferably light emitting diode (LED) display screen or LCDs.Contactless card reading unit 10 is preferably integrated circuit card reader or identification card reader.Data processing unit 11 adopts 8 MCU of high-performance, extends out the data-carrier store of 8Mbit simultaneously; Contactless card reading unit 10 adopts the ID card reading module.IC-card full name integrated circuit card (Integrated Circuit Card) is claimed smart card (Smart Card) again.Read-write, capacity is big, and encryption function is arranged, and data recording is reliable, uses more conveniently, like card system, consume system, attendance checking system etc., mainly contains the Mifare serial card of PHILIPS at present.ID card full name identification card (Identification Card) is a kind of contactless card that can not write, and contains fixing numbering, mainly contains all kinds of ID cards such as EM form, U.S. HID, TI, MOTOROLA of Taiwan SYRIS.

The use of passive RFID card reader and the course of work that the utility model provides are following:

General office space is furnished with ethernet line, connects this passive RFID card reader through ethernet line, and the RFID card reader is carried out the parameter setting and data acquisition becomes convenient and swift, can also handle passive RFID card reader data through LAN.Can a plurality of card reader be connected on the computer simultaneously through a major network line and junction box equipment, each card reader says the word through computer a unique device number is set.

When contactless card places the induction range of passive RFID card reader; Data processing unit 11 obtains the data of contactless card through the contactless card reading unit; Obtain present clock through the real-time clock unit; Be saved in data storage cell 15 to present clock and contactless card data, send to data display unit 13 to data simultaneously, data display unit 13 shows the result that number of times is swiped the card.

Behind user key-press; Data processing unit 11 obtains the keyboard data of user's typing through button processing unit 14; Obtain present clock through the real-time clock unit; Be saved in storage unit 15 to present clock and keyboard data, send to data display unit 13 to data, the button data of data display unit 13 explicit user typings simultaneously.

Computer regularly sends the data acquisition broadcasting command through the card reader of RS232/485 communication interface 12 on all connect; After card reader receives acquisition, the data the earliest and the device number of self that are stored in data storage cell 15 are sent to computer through RS232/485 communication interface 12.After computer is received data, send earlier the instruction of a deleted data and give card reader, let data the earliest in the card reader deleted data storage unit 15.Send other orders for after the data processing of receiving is accomplished the card reader of appointment again, give card reader such as sending Word message, data display unit 13 is presented at the Word message of receiving on the screen.

The RS232/485 communication interface 12 of the active RFID card reader that the utility model provides both can have been linked the direct and compunlcation of serial ports of computer through active transducer, also can be connected with network through connecting other data conversion equipments.

In sum, the active RFID card reader that the utility model provides connects button processing unit 14 and data display unit 13 through data bus, connects real-time clock unit 16 through clock bus, thus expansion demonstration and input function and do not influence reading speed.

Though the utility model discloses as above with preferred embodiment; Right its is not in order to limit the utility model; Any those skilled in the art; In spirit that does not break away from the utility model and scope, when can doing a little modification and perfect, so the protection domain of the utility model is when being as the criterion with what claims defined.

Claims

1. passive RFID card reader; Comprise contactless card reading unit (10), data processing unit (11) and RS232/485 communication interface (12); It is characterized in that; The input end of said data processing unit (11) links to each other with button processing unit (14) through data bus; Clock end links to each other with real-time clock unit (16) through clock bus, and the output terminal of said data processing unit (11) links to each other with data display unit (13), hummer (17), pilot lamp (18) through data bus.

2. passive RFID card reader as claimed in claim 1 is characterized in that, said data display unit (11) is light emitting diode (LED) display screen or LCDs.

3. according to claim 1 or claim 2 passive RFID card reader is characterized in that said contactless card reading unit (10) is integrated circuit card reader or identification card reader.