CN201765599U

CN201765599U - Desk type/portable high-frequency RFID reader-writer with USB interface and Bluetooth interface

Info

Publication number: CN201765599U
Application number: CN2009200304336U
Authority: CN
Inventors: 王明磊; 钱恒; 刘丽梅; 党斌; 范新强
Original assignee: SHANDONG INSTITUTE OF STANDARDIZATION; SHANDONG RFID ENGINEERING RESEARCH CENTER CO LTD
Current assignee: SHANDONG INSTITUTE OF STANDARDIZATION; SHANDONG RFID ENGINEERING RESEARCH CENTER CO LTD
Priority date: 2009-07-24
Filing date: 2009-07-24
Publication date: 2011-03-16
Anticipated expiration: 2019-07-24

Abstract

The utility model relates to a desk type/portable high-frequency RFID reader-writer with a USB interface and a Bluetooth interface, which is characterized by comprising a multi-protocol HF RFID reading and writing unit (1), a signal switching circuit (2), a USB interface module (3), a Bluetooth communication module (4), a power supply module (5) and a human-machine interface module (6). The desk type/portable high-frequency RFID reader-writer integrates the two main interfaces of the current wired and wireless communication, namely, USB and Bluetooth, and not only is convenient in system integration, but also integrates the characteristics of desk type and portable type, so as to realize dual purposes with one machine, and be convenient in operation on various occasions. The desk type/portable high-frequency RFID reader-writer also has the advantage of operating electronic labels of multiple high-frequency standard protocols (such as ISO15693, ISO14443A and ISO14443B), is compact in structure, small in size and portable, enables the operation to be more convenient with specific single-key scanning function, and can be widely applied in equipment inspection in the fields of power, water supply, railways, coal mines, oil fields, finance and the like, in counterfeiting prevention of various documents of customs, scene spots and venues and the like and on logistics occasions of warehouses and postal service and the like.

Description

Desk-top/portable high frequency rfid interrogator with USB and bluetooth double nip

Technical field

The utility model belongs to the EDP technology field, specifically refers to the desk-top/portable high frequency rfid interrogator of a kind of USB of having and bluetooth double nip.

Background technology

Radio-frequency (RF) identification (RFID) technology is one of the most promising infotech in this century, is obtaining the great attention of global industry.Current, in the various fields of IT application in enterprises and social informatization, the RFID technology is progressively goed deep into application.

A typical R FID system comprises electronic tag, read write line and three parts of RFID application platform.According to the difference of frequency of operation, rfid system can be divided into low frequency (LF), high frequency (HF) and ultrahigh frequency different systems such as (UHF).Wherein, the HF rfid system is in global range of application maximum.International Organization for Standardization has been formulated the consensus standard of data transmission between a plurality of electronic tags such as ISO15693, ISO18000-3, ISO14443A/B/C and the read write line in the HF frequency range.The electronic tag of different protocol standards cooperates corresponding read equipment, shows different characteristics at aspects such as data encoding/decoding, radio frequency (RF) signal modulating/demodulating, reading/writing distance, data transmission rates.

In general, read write line equipment can be divided into desk-top and portable according to the difference of mode of operation.Desk-top read write line is applicable to desktop operated, and portable read-write machine has the characteristics of handheld device, is more suitable in various portable operations.Desk-top read write line produces for cooperating PC to form rfid system, and therefore, early stage desk-top read write line only provides serial ports and PC to communicate.And USB has the incomparable advantage of many serial ports as a kind of novel interface standard, comprises that easy to connect, transmission speed soon, does not need external power source, supports hot plug etc.It is replacing the wired communication interface that serial ports becomes people's first-selection.Distinct interface mode at handheld device, the read write line of CF interface and SDIO interface has appearred in portable rfid interrogator in succession, but along with the development of handheld device to miniaturization, wireless penetration, the CF interface is eliminated, the intelligent terminal of SDIO interface is also fewer and feweri.This has just caused original portable rfid interrogator can not satisfy the requirement in market.At present, the blue tooth interface of employing wireless technology has become the common configuration of intelligent terminals such as palm PC, smart mobile phone.Therefore, the rfid interrogator equipment of market demand with blue tooth interface is filled up this blank.

Two big main flow interface shape---USB and bluetooths of wired and radio communication not only are convenient to the system integration, but also have been taken into account desk-top and portable characteristics on the utility model support the market, have realized dual-use, make things convenient for various operations of answering occasion.

Summary of the invention

The purpose of this utility model provides the desk-top/portable high frequency rfid interrogator of a kind of USB of having and bluetooth double nip.Its structural design compactness, profile are small and exquisite, and integrated bluetooth and two kinds of interface shapes of USB are applicable to desk-top and portable two kinds of modes of operation.The technical solution of the utility model is: a kind of desk-top/portable high frequency rfid interrogator with USB and bluetooth double nip, comprise power module (5), it is characterized in that: described power module (5) respectively with multi-protocols HF RFID read-write cell (1), signal switching circuit (2), usb interface module (3), bluetooth communication (4) is connected with human-computer interface module (6), described usb interface module (3) is connected with signal switching circuit (2), signal switching circuit (2) and multi-protocols HF RFID read-write cell (1), bluetooth communication (4) connects, multi-protocols HF RFID read-write cell (1), bluetooth communication (4) all is connected with human-computer interface module (6).

The utility model is the high-performance read-write equipment that RFID technology, Bluetooth technology and USB interface technology are combined.Parts such as multi-protocols HF RFID read-write cell, bluetooth module, usb circuit, signal switching circuit, Power Management Unit that it is inner integrated.Before to the electronic tag operation, at first should select a kind of mode of operation as required.For example: if carry out desktop operated, so available USB cable is connected to PC, selects desk-top mode of operation; If carry out portable operation, can disconnect USB so and connect, read write line will use bluetooth to finish communication.So just be not subjected to the various restrictions of wire communication, be convenient to various portable operations.

After choosing mode of operation, just can utilize read write line that electronic tag is carried out various the operation.When from the electronic tag sense information, receive the modulation signal and the demodulation of electronic tag by the radio frequency front end chip of read write line inside, the signal of protocol handler after to demodulation decoded, and obtains the information of electronic tag, then with these information uploadings to terminating machine.The user can carry out simple information processing on terminating machine, pass to total backstage after also can being gathered by terminating machine and carry out further analyzing and processing.When to the electronic tag writing information, host computer sends to protocol handler with the information that needs write by communication interface, by protocol handler information is encoded, send after the information modulation after radio-frequency front-end will be encoded again, electronic tag has promptly been finished writing of information after receiving signal.

The utility model is used to the read-write operation function of handheld device extended RFID electronic tags such as palm PC, smart mobile phone.It has USB and two kinds of interfaces of bluetooth, can select desk-top as required or the portable operation mode.Especially its built-in bluetooth module makes communication not be subjected to the restriction of equipment wire communication form, is convenient to various portable operations.Therefore, this utility model provides solution cleverly for wanting with the enterprise that RFID is integrated in their system.The employee that it is very suitable for mobile office follows the tracks of and monitors mobile resources, also can be at an easy rate and various wireless handheld PDA or the integrated use of smart mobile phone.In addition, it can also fixedly mount on the wall or on the sales counter, to read labeled article.

In addition, the utility model can carry out read-write operation to multiple standards agreement electronic tags such as ISO15693, ISO14443A, ISO14443B, and is powerful, the scope of application is wider; Compact conformation, compact size is easy to carry; Have the singly-bound scan function, easy to operate; Built-in lithium polymer battery, available USB charging.It can be widely used in the equipment routing inspection in fields such as electric power, water supply, railway, colliery, oil field, finance, and customs, sight spot, venue, all kinds of identity document are false proof, logistics such as warehouse, postal service transportation occasion.

Description of drawings

Fig. 1 is the hardware block diagram of utility model

Fig. 2 is the outside drawing of utility model

Embodiment

Below in conjunction with accompanying drawing, embodiment of the present utility model is specifically described.

With reference to accompanying drawing 1, the utility model implements to comprise multi-protocols HF RFID read-write cell 1, signal switching circuit 2, usb interface module 3, bluetooth communication 4, power module 5, human-computer interface module 6.

Wherein, power module 5 is responsible for to multi-protocols HF RFID read-write cell 1, signal switching circuit 2, usb interface module 3, bluetooth communication 4 and human-computer interface module 6 power supplies, described usb interface module 3 is connected with signal switching circuit 2, signal switching circuit 2 is connected with multi-protocols HF RFID read-write cell 1, bluetooth communication 4, and multi-protocols HF RFID read-write cell 1, bluetooth communication 4 all are connected with human-computer interface module 6.

Multi-protocols HF RFID read-write cell 1 is made up of protocol handler and radio-frequency (RF) front-end circuit, realizes the read-write operation to various RFID electronic tags.Protocol handler forms the data stream of communicating by letter between PCD and the PICC, just baseband signal according to variety of protocol standard (mainly being ISO 15693, ISO 14443A/B); Radio-frequency front-end then is according to the variety of protocol standard, the baseband signal that protocol handler provides is carried out modulation and demodulation, and it is launched.Signal switching circuit 2 is realized the switching of communication path, and just being used for selecting to use bluetooth still is that USB mode and host computer communicate.When disconnecting the USB connection, automatically switch to the Bluetooth communication mode; When connecting USB, automatic cutout is connected with bluetooth, switches to the USB communication modes.Usb interface module 3 is realized the conversion of USB interface agreement and serial port protocol.Bluetooth communication 4 realizes the automatic conversion of Bluetooth communication protocol and serial port protocol.Power module 5 is mainly used in the Charge Management of internal cell and the switching of power supply mode, so just can select to use USB still to use inner lithium battery power supply from the host computer power taking according to mode of operation.Human-computer interface module 6 mainly comprises key circuit, buzzer drive circuit and indicator light circuit.The operator can be by the read-write operation by the key control read write line; And different hummer sound and pilot lamp show the operational circumstances and the equipment operation condition that can reflect read write line.

The components and parts model that the utility model enforcement is adopted is as shown in the table:

The components and parts title	The components and parts model	The components and parts encapsulation
			Single-chip microcomputer	PIC?18LF2520?	QFN28?
Radio-frequency front-end	Picoread?RF?	SSOP16?
			Bluetooth module	BCM-LV-2.0?	BC02?
Mini USB	Type B	MiniUSB?
			The Charge Management controller	MCP73855?	DFN10?
The LDO chip	TC1107?	SOIC-8?
			Hummer	BEEP?	TAT-BM7525S-0327?

The function that the utility model reaches after implementing is as described below:

(1) bluetooth connects: read write line can communicate with the main equipment of band Bluetooth function;

(2) support multiple high-frequency electronic label: the electronic tag of standards such as read-write ISO 15693, ISO 14443A/B;

(3) easy and simple to handle: one hand just can be finished various operations;

(4) power supply is optional: can use built-in lithium battery power supply, also can utilize the USB interface power taking;

(5) antenna is built-in, and volume is small and exquisite, is easy to carry.

The key technical indexes is as shown in the table:

Claims

1. desk-top/portable high frequency rfid interrogator with USB and bluetooth double nip, comprise power module (5), it is characterized in that: described power module (5) respectively with multi-protocols HF RFID read-write cell (1), signal switching circuit (2), usb interface module (3), bluetooth communication (4) is connected with human-computer interface module (6), described usb interface module (3) is connected with signal switching circuit (2), signal switching circuit (2) and multi-protocols HF RFID read-write cell (1), bluetooth communication (4) connects, multi-protocols HF RFID read-write cell (1), bluetooth communication (4) all is connected with human-computer interface module (6).