KR100925478B1 - Radio frequency identification system and reader using bluetooth and rfid information reading method thereof - Google Patents

Abstract

PURPOSE: An RFID system using the Bluetooth, an RFID reader and an RFID information reading method thereof are provided to transmit RFID information to an application device wirelessly according to the Bluetooth protocol. CONSTITUTION: First/second RFID(Radio Frequency Identification) tags(101,102) store RFID information. The first RFID tag transmits the RFID information in response to the reception of the first RFID frequency. The second RFID tag transmits the RFID information in response to the reception of the second RFID frequency. An application device(200) stores/displays/manages the received RFID information. An RFID reader(100) generates and transmits the first/second RFID frequencies.

Description

RADIO FREQUENCY IDENTIFICATION SYSTEM AND READER USING BLUETOOTH AND RFID INFORMATION READING METHOD THEREOF}

The present invention relates to a Radio Frequency Identification (RFID) system, and more particularly, to read RFID information from an RFID tag that transmits RFID information in response to a radio frequency, and to apply an application device according to a Bluetooth wireless protocol. The present invention relates to a radio frequency identification system, a reader, and a method of reading the radio frequency identification information using Bluetooth.

Recently, the application of Auto-ID technology is becoming common in various fields such as service industry, purchasing and distribution, inventory management industry, manufacturers and material distribution. Auto-recognition provides information about people, animals, goods and products in transit, as well as information on all objects such as buildings and plants.

The automatic recognition technology includes a barcode method, a smart card method, and a radio frequency identification (RFID) method.

Barcode schemes are very inexpensive, but have low storage capacity and cannot be reprogrammed.

A common form of smart card scheme is contact cards such as telephone cards and bank cards. However, the mechanical contact used in these smart cards sometimes has a disadvantage that is not practical.

The RFID system is to improve the disadvantages of the barcode method and the smart card method. RFID systems are easy to transmit data in a contactless manner.

1 is a view showing the configuration of a general RFID system. A description with reference to FIG. 1 is as follows.

As described above, the RFID system includes an RFID tag 10, an RFID reader 20, and an application device 30.

The RFID tag 10 is formed in various shapes to be attached or inserted into an object such as a card, an animal, a plant, an object, a building, etc. for easy carrying by a person, and is generally small in size so that the RFID tag 10 can be inserted into the objects. And stores information about the owned person and the attached object, and transmits the stored information in response to the received RFID frequency signal. The RFID tag 10 has a battery and is passive and active depending on whether it transmits the stored information using only or part of the battery's power or by using the power of the signal received from the RFID reader 20. Are distinguished.

The RFID reader 20 generates and transmits an RFID frequency when an information read command for reading information of the RFID tag 10 is input, and in response to the transmission of the RFID frequency, information of the RFID tag 10 (hereinafter referred to as “RFID information”). ""). The received RFID information is transmitted to the application device 30 according to the RFID reader 20 and a dedicated wired interface method. The information read command may be generated by the user in the RFID reader 20 itself or may be received from the application device 30. As the RFID frequency, frequencies such as long wave (LF: 30KHz-300KHz), short wave (HF: 3MHz-30MHz), and high frequency (UHF: 300MHz-3GHz) bands are used according to the application field and purpose of the RFID tag 10. .

The application device 30 is a device such as a personal computer (PC), a personal digital assistant (PDA), a notebook, a UMPC, and the like, and receives information transmitted by the RFID reader 20. Process, store and display, and manage stored information.

The RFID reader 20 and the application device 30 are connected by wire or by a cable or mutual connector coupling according to a dedicated wired interface method.

As described above, as the application device 30 and the RFID reader 20 are connected by wires, there is a problem that the portability and mobility of the RFID reader is inferior.

Specifically, when the application device is a relatively large application device such as a personal PC or a notebook, it is connected by wire with a dedicated cable. In general, the length of the cable connected to the computer is limited, and mobility and portability due to the size, weight of the application device and the length of the connecting cable is inferior.

To alleviate any of these problems, application devices such as relatively compact and lightweight PDAs are used. However, even in this case, the mobility is improved compared to the case described above, but the PDA has to carry with the RFID reader, so the portability is low, and its weight is heavy, making it difficult to work for a long time.

Accordingly, an object of the present invention is to read RFID information from an RFID tag and transmit the RFID information to an application device according to a Bluetooth wireless protocol, thereby improving mobility and portability. The present invention provides a method of reading frequency identification information.

It is another object of the present invention to check whether an application program for processing RFID tag information is installed in an application device after a Bluetooth connection between the RFID reader and the application device, and when the application program is not installed, the RFID reader transmits the application program to the application device. After installation, the present invention provides a radio frequency identification system, a reader, and a control method using Bluetooth for processing RFID tag information.

In addition, another object of the present invention is a radio frequency identification system, reader and control method using Bluetooth that automatically recognizes the interface device that the RFID reader is physically connected to the application device to perform a wireless or wired connection with the application device To provide.

Radio frequency identification system using Bluetooth of the present invention for achieving the above object; An RFID tag that stores radio frequency identification information and transmits the radio frequency identification information in response to reception of an RFID frequency, an application device for storing, displaying, and managing received radio frequency identification information, the application device, and a Bluetooth protocol. And an RFID reader for wirelessly connecting the RFID frequency to the RFID tag when a command for reading radio frequency identification information is read, and receiving the radio frequency identification information according to the Bluetooth protocol. It is characterized by.

The RFID reader may determine whether there is a pre-registered application device at power-on, and if there is a registered application device, is automatically connected to the registered application device according to a Bluetooth protocol.

The RFID reader determines that there is a pre-registered application device when a Bluetooth wireless connection command is input, and if there is a registered application device, is automatically connected to the registered application device according to the Bluetooth protocol.

After the Bluetooth wireless connection, the RFID reader checks whether an application program for processing RFID information is installed in the application device, and if not installed, transmits and installs an application program installation program to the application device, and then reads RFID information. Characterized in performing the operation.

The RFID reader generates and transmits the first RFID frequency by an input unit having an RFID frequency band selection key and an RFID information transmission interface selection key, and an RFID tag that transmits RFID information in response to the first RFID frequency to receive the RFID information. The first transmitter / receiver, a second transmitter / receiver configured to generate and transmit the second RFID frequency by using an RFID tag that transmits RFID information in response to the second RFID frequency, and receive the RFID information; A wired interface unit for transmitting to the device, a Bluetooth wireless interface unit for transmitting the read RFID information to the application device according to a Bluetooth protocol, and storing for storing the selected RFID frequency band and RFID information transmission interface setting information through the input unit And an RFID frequency band and RFID information transmission inter via the input unit. If a face is selected, it is stored in the storage unit, and if the read command of the RFID information is generated, the RFID information is read from the RFID tag through a transceiver corresponding to the set information, and the read RFID information is transferred to the application device through the selected interface unit. It characterized in that it comprises a control unit for transmitting.

The RFID reader may further include a display unit for displaying the RFID frequency band and the RFID information transmission interface setting information of the setting information under the control of the controller.

The storage unit of the RFID reader is an application program for processing RFID information

The apparatus further stores an installation program, and after the Bluetooth wireless connection, the controller checks whether an application program for processing RFID information is installed in the application device, and transmits the application program installation program to the application device if it is not installed. After installation, it is characterized in that to perform the RFID information reading operation.

Radio frequency identification reader using Bluetooth of the present invention for achieving the above object; An input unit including an RFID frequency band selection and an RFID information transmission interface selection key, and a first transmitting and receiving unit generating and transmitting the first RFID frequency by using an RFID tag that transmits RFID information in response to the first RFID frequency. And a second transmitter / receiver configured to generate and transmit the second RFID frequency by using an RFID tag that transmits RFID information in response to a second RFID frequency, and to receive the RFID information, and a wired interface to transmit the read RFID information to an application device. And a Bluetooth wireless interface unit for transmitting the read RFID information to an application device according to a Bluetooth protocol, a storage unit for storing the selected RFID frequency band and RFID information transmission interface setting information through the input unit, and the input unit. When the RFID frequency band and the RFID information transmission interface is selected, the storage And a controller for reading the RFID information from the RFID tag through a transceiver corresponding to the set information and transmitting the read RFID information to the application device through a selected interface unit when the RFID information read command is generated. It features.

The RFID reader further stores an application program installation program for processing RFID information, and the controller checks whether an application program for processing RFID information is installed in the application device after the Bluetooth wireless connection, If not installed, the application program installation program is transmitted to the application device and installed, and then the RFID information reading operation is performed.

The storage unit further stores registration information for an application device capable of Bluetooth wireless connection, and the controller automatically wirelessly connects to the application device of the registration information according to the Bluetooth protocol when the power is turned on.

RFID information reading method of a radio frequency identification system using Bluetooth of the present invention for achieving the above object; When the RFID reader and the application device are wirelessly connected according to the Bluetooth protocol, and after the Bluetooth wireless connection, the RFID reader generates an RFID information reading command, generates and transmits an RFID frequency according to the preset RFID frequency band information. Reading the RFID information, the RFID tag transmitting pre-stored RFID information to the RFID reader when the RFID frequency is received; and receiving the RFID information from the RFID reader and transmitting the RFID information to an application device through the Bluetooth connection. It characterized in that it comprises a RFID information transmission process.

The wireless connection process is characterized in that the RFID reader automatically performs wireless connection according to a Bluetooth protocol to a pre-registered application device when the power is turned on.

In the RFID reading method of the present invention, after the Bluetooth wireless connection process, the RFID reader transmits a confirmation message for installing an application program to an application device according to a Bluetooth protocol, and responds with information on whether the application program is installed. An application installation checking process for receiving a message and checking whether the application device is installed in the application device, and if the application device is not installed in the application device, transmitting a previously stored application installation program to the application device, The application device further comprises the step of installing an application program according to the application program installation program.

Since the RFID reader of the present invention wirelessly transmits the RFID information read from the RFID tag to the application device according to the Bluetooth protocol, the operator can read the information of the RFID tags while only carrying the RFID reader, thereby improving portability and mobility. Has an effect.

In addition, the present invention can carry only the RFID reader, so that the weight is lightened has the effect of improving the work efficiency of the operator.

In addition, since the present invention may be separated from the application device can use a high performance application device, such as a personal computer and a notebook, there is an effect that it is easier to process the read information.

Hereinafter, the configuration and operation of an RFID system using Bluetooth according to the present invention will be described with reference to the drawings.

2 is a diagram illustrating a configuration of an RFID system using Bluetooth according to the present invention.

Referring to FIG. 2, the RFID system includes RFID tags 101 and 102, an RFID reader 100, and an application device 200.

The RFID tag 101 transmits previously stored RFID information to the RFID reader 100 in response to the first RFID frequency. The first RFID frequency is a frequency of the short wave (HF: 3MHz-30MHz) band. In the present invention, the first RFID frequency is a short wave of 13.56 MHz.

The RFID tag 102 transmits previously stored RFID information to the RFID reader 100 in response to the second RFID frequency. The second RFID frequency is a frequency of a high frequency (UHF: 300 MHz-3 GHz) band. In the present invention, the first RFID frequency is a high frequency of 900MHz is applied.

The RFID reader 100 wirelessly connects the application device 200 according to the Bluetooth protocol, and generates a preset RFID frequency when the RFID information read command is generated, transmits the generated RFID frequency, and responds to the RFID frequency. After receiving the RFID information from the tags 101 and 102, the RFID information is transmitted to the Bluetooth wirelessly connected application device 200 according to the Bluetooth protocol. The RFID reader 100 according to the present invention is configured to selectively transmit a first RFID frequency of the HF band and a second RFID frequency of the UHF band. However, the RFID reader 100 may be configured to simultaneously generate and transmit the first RFID frequency of the HF band and the second RFID frequency of the UHF band.

In addition, when the application device 200 supporting the Bluetooth wireless connection is registered in advance, the RFID reader 100 wirelessly connects to the application device 200 registered automatically at power-on according to the Bluetooth protocol.

The application device 200 is a device such as a personal computer (PC), a notebook computer, a notebook, a personal digital assistant (PDA), a UMPC (Ultra Mobile PC) having a Bluetooth interface means, and a Bluetooth interface. It receives and stores the RFID information of the RFID tag 101 or 102 from the RFID reader 100 through the means, stores and displays the RFID information, and processes and manages the RFID information. In addition, the application device 200 stores information of the RFID reader 100 to communicate in order to manage the plurality of RFID readers 100.

3 is a view showing the configuration of an RFID reader of the RFID system according to the present invention. Hereinafter, the configuration and operation of the RFID reader according to the present invention will be described with reference to FIG. 3.

The RFID reader 100 includes a control unit 110, a storage unit 120, an input unit 130, a display unit 140, a wireless interface unit 150, a wired interface unit 160, a barcode reader unit 170, and a first unit. It consists of a transceiver 180 and a second transmitter / receiver 190.

The controller 110 controls the overall operation of the RFID reader 100 according to the present invention. Detailed operations of the controller 110 will be described with reference to FIGS. 5 to 6 to be described later.

The storage unit 120 includes a control program area for storing a control program for controlling an operation according to the present invention, and a data area for storing data generated during execution of the control program. In the data area, setting information such as an RFID frequency band and an interface selected by a user is stored, and information of an application device 200 registered in advance is stored. The application device 200 may be plural in number.

The input unit 130 may include at least one frequency selection button for selecting one of the first RFID frequency of the HF band and the second RFID frequencies of the UHF band and the interface selection button and RFID information for selecting the interface means. And a read command button for generating a read command, and outputs a button signal for a button pressed by the user to the controller 110. Frequency selection modes that can be selected by the frequency selection button are a first frequency (HF) mode, a second frequency mode and an automatic mode. The automatic mode is a mode in which the automatic change to the second frequency mode or the first frequency mode when the RFID information is not received for a predetermined time with respect to the transmission of the frequency by the RFID information read command while operating in the first frequency mode or the second frequency mode. to be. The interface selection mode that can be selected by the interface selection button also includes a wireless interface mode, which is a Bluetooth mode, a wired interface mode, which is a universal interface bus (USB) interface mode, and an automatic interface mode. The automatic interface mode is a mode for automatically setting an interface mode connected between a wired interface and a wireless interface.

The display unit 140 displays the operation state of the RFID reader under the control of the controller 110. In detail, the display unit 140 displays setting information of the current RFID reader, that is, setting frequency mode information and setting interface mode information. In addition, the display unit 140 may be configured to display the read RFID information.

The wireless interface unit 150 transmits the data input from the controller 110 to the application device 200 in a radio signal, detects data from the wireless signal received from the application device 200, and transmits the data to the controller 110. Output In the present invention, the Bluetooth interface is used as the wireless interface method.

The wired interface unit 160 transmits data input from the control unit 110 to the application device 200 according to a wired protocol, and outputs data received from the application device 200 to the control unit 110. As the wired protocol method, a method such as RS232C and USB may be applied. In the present invention, the USB method is applied.

The barcode reader unit 170 scans a barcode under the control of the controller 110 and outputs the barcode to the controller 110. The barcode reader unit 170 may be a CCD method and an infrared method.

The first transmitter / receiver 180 generates and transmits a first RFID frequency under the control of the controller 110, receives RFID information from the RFID tag 101 in response to the first RFID frequency, and outputs the RFID information to the controller 110. do.

The second transmitter / receiver 190 generates and transmits a second RFID frequency under the control of the controller 110, receives RFID information from the RFID tag 102 in response to the second RFID frequency, and outputs the RFID information to the controller 110. do.

4 is a flowchart illustrating a method of reading RFID information in an RFID system using Bluetooth according to the present invention. Hereinafter, a method of reading RFID information according to the present invention will be described with reference to FIG. 4.

First, when the radio interface mode is set or set, the RFID reader 100 performs a Bluetooth wireless connection with the preset application device 200 (S401).

When the RFID reader 100 and the application device 200 are Bluetooth wirelessly connected, the RFID reader 100 transmits the self, that is, the RFID reader information to the application device 200 according to the Bluetooth protocol (S413). This is to distinguish the information received from the plurality of RFID readers 100 in one application device 200.

After transmitting the RFID reader information, the RFID reader 100 checks whether an RFID information reading command is generated (S415, S417). The RFID information reading command may be generated by the application device 200 as shown in FIG. S415), may also occur through the input unit 130 of the RFID reader 100 (S417).

When the RFID information read command is generated, the RFID reader 100 generates a corresponding RFID frequency and transmits the corresponding RFID frequency through an antenna according to a preset RFID frequency mode (S419).

The RFID tag 101 or 102 receiving the RFID frequency reads the RFID information and transmits the RFID information to the RFID reader 100 (S421).

When the RFID reader 100 receives the RFID information from the RFID tag 101 or 102, the RFID reader 100 generates a signal according to a Bluetooth protocol, that is, generates an RFID information transmission Bluetooth message and transmits the generated RFID message to the application device 200 (S423).

In the above, the operation under the assumption that the application program for processing the RFID information is installed in the application device 200 has been described. Hereinafter, when the application program is not installed in the application device 200, a method of automatically reading the RFID program after installing the application program in the application device 200 will be described. This is to prevent the user or operator from installing directly using a storage medium in which an application installation program such as a separate disk or CD is recorded.

First, as described above, when the RFID reader 100 and the application device 200 are Bluetooth wirelessly connected, the RFID reader 100 transmits a message indicating whether the application is installed according to the Bluetooth protocol to the application device 200 (S403). .

The application device 200 that has received the application program installation confirmation message confirms whether the application program is installed, and transmits a response message including the installation information to the RFID reader 100 (S405).

Upon receiving the response message, the RFID reader 100 analyzes the response message to determine whether an application program is installed in the application device 200 (S407), and if the application program is installed, the above-described RFID reader information transmission process. In step S413, if the application program is not installed, the application program installation program stored in the storage unit 120 is transmitted to the application device 200 (S409).

The application device 200 receiving the application installation program installs an application program according to the application installation program (S410), and when the application installation is completed, transmits the application installation completion message to the RFID reader 100 ( S411).

The RFID reader 100 receiving the application program installation completion message performs the processes after the above-described RFID reader information transmission process (S413).

The above-described RFID reader 100 will be described with reference to FIGS. 5 and 6 to the application device 200 and the Bluetooth connection, the RFID frequency selection method for performing the above operation.

5 is a flowchart illustrating a Bluetooth connection method in an RFID reader of an RFID system using Bluetooth according to the present invention.

First, when the power of the RFID reader 100 is turned on (S411), the controller 110 checks preset setting information from the storage 120 (S413), and if the Bluetooth mode is set (S415), the USB mode. It is determined whether is set (S415). If the USB mode is set, it is checked whether the application device 200 is connected through the USB wired interface unit 160 (S433), and when connected or connected, the application device 200 is connected to the display unit 140 by USB wired. It indicates that the connection to the interface unit 160 (S435).

On the other hand, if it is determined that the Bluetooth mode is set (S415), the controller 110 checks whether there is an application device 200 registered in the storage 120 (S419).

If there is no registered application device 200, the controller 110 performs a Bluetooth device search routine according to the Bluetooth protocol (S439).

After the Bluetooth device discovery routine (S439) or if there is a pre-registered application device (S419), the controller 110 determines whether there is one registered device (S421).

If there is only one registered application device 200, the controller 110 performs a Bluetooth wireless connection with the application device 200 according to a Bluetooth protocol through the wireless interface unit 150 (S429), and the application device 200. ) And the Bluetooth connection completion display on the display unit 140 to inform the user that the Bluetooth wireless connection is established. The Bluetooth connection complete indication may be displayed as text, an icon, or both at the same time. However, the Bluetooth connection completion indication may be displayed in text only for a certain time immediately after the connection, and the icon may be displayed continuously while the Bluetooth wireless connection is maintained.

Although not shown in FIG. 5, the automatic mode may be further included in addition to the Bluetooth mode and the USB mode. In this case, the controller 110 sequentially checks a Bluetooth wireless connection with the USB connection or registration or the adjacent application device 200 through the wireless interface unit 150 and the wired interface unit 160 to connect with the application device 200. Automatically select the desired mode.

6 is a flowchart illustrating a method for selecting an RFID frequency in an RFID reader according to the present invention.

When the power of the RFID reader is turned on (S511), the controller 110 checks the RFID setting information stored in the storage 120 to determine whether the RFID frequency mode is set to the HF mode (S515) or the UHF mode. Inspect (S517).

If it is set to the HF mode, the controller 110 drives (ie, enables) the first transmitter / receiver 180 (S519), and if it is set to the UHF mode, the controller 110 enables the second transmitter / receiver 190 ( S521).

The HF mode and the UHF mode last until the mode conversion command is input from the input unit 130. When the mode conversion command is input (S523), the RFID setting RFID frequency mode is toggled (S525). That is, when the mode conversion command is input in the state set to UH mode, it is converted into UHF mode and stored. When the mode conversion command is input on the UHF mode, it is converted to HF mode and stored.

As described above, when connected to the application device 200 and the RFID frequency mode is determined, the RFID reader 100 reads RFID information of the RFID tags 101 and 102 by the process as shown in FIG. 200).

FIG. 7 is a flowchart illustrating a method of transmitting information through a Bluetooth protocol in an RFID reader according to the present invention, and shows a method of transmitting RFID information in a Bluetooth wireless connection.

First, the control unit 110 of the RFID reader 100 checks whether a read command (read) of RFID information is received (S611). The RFID tag read command may be generated by an RFID information read button of the input unit 130 of the RFID reader 100 or may be generated by an application program of the application device 200.

When the RFID information read command is generated, the controller 110 generates and transmits an RFID read signal, that is, an RFID frequency, through the RFID transceiver 180 or 190 set in the storage 120 (S613).

After the RFID frequency transmission, the controller 110 checks whether the RFID information is received from the RFID tag 101 or 102 through the corresponding RFID transceiver 180 or 190 (S615), and receives the RFID information when the RFID information is received. The storage unit 120 stores the data (S617).

Then, the controller 110 converts the stored RFID information into a signal based on the Bluetooth protocol and transmits the converted RFID information to the application device 200 through the Bluetooth wireless interface unit 150.

8 is a flowchart illustrating a method of storing RFID information for each reader in an application device according to the present invention.

Referring to FIG. 8, the application device 200 checks whether the reader information is received from the reader 100 after transmitting the response message in S405 of FIG. 4 or after transmitting the application program installation complete message in S411 (S811). The reader information may include information such as a reader identifier, a reader production date, and the like.

When the reader information is received, the application device 200 detects the reader identifier from the reader information, stores the detected reader identifier, and registers the reader 100 (S813).

When the reader 100 is registered, the application device 200 checks whether RFID information is received from the RFID reader 100 (S815).

When the RFID information is received, the application device 200 detects the reader identifier (S817) and stores the RFID information in a storage area corresponding to the reader identifier. In this case, the application device 200 may further store information about the user of the registered RFID reader 100, and may perform job performance statistics for each user of the RFID reader 100.

4 and 8 separately transmit the information of the RFID reader 100, and at this time, the application device 200 receiving the reader information registers the RFID reader 100, but when receiving the RFID information, It may be determined whether the received RFID identifier is registered, and if not, it may be registered.

On the other hand, the present invention is not limited to the above-described typical preferred embodiment, but can be carried out in various ways without departing from the gist of the present invention, various modifications, alterations, substitutions or additions in the art Anyone who has this can easily understand it. If the implementation by such improvement, change, replacement or addition falls within the scope of the appended claims, the technical idea should also be regarded as belonging to the present invention.

1 is a view showing a schematic configuration of a general RFID system

2 is a diagram illustrating a configuration of an RFID system using Bluetooth according to the present invention.

3 is a diagram illustrating a configuration of an RFID reader of an RFID system according to the present invention.

4 is a flowchart illustrating a control method of an RFID system using Bluetooth according to the present invention.

5 is a flowchart illustrating a Bluetooth connection method in an RFID reader of an RFID system using Bluetooth according to the present invention.

6 is a flowchart illustrating a method for selecting an RFID frequency in an RFID reader according to the present invention.

7 is a flowchart illustrating a method for transmitting information through a Bluetooth protocol in an RFID reader according to the present invention.

8 is a flowchart illustrating a method of storing RFID information for each reader in an application device according to the present invention.

※ Explanation of codes for main parts of drawing

100: RFID reader 101: RFID tag (HF)

102: RFID tag (UHF) 200: application device

Claims (13)

A first RFID tag that stores RFID information and transmits the RFID information in response to receiving the first RFID frequency; A second RFID tag that stores RFID information and transmits the RFID information in response to receiving the second RFID frequency; An application device for storing, displaying, and managing received RFID information; Generating and transmitting the first and second RFID frequencies, and receiving the RFID information on the corresponding RFID frequency and transmitting the RFID information to the application device according to a Bluetooth protocol. The RFID reader, An input unit including the first and second RFID frequency band selection and RFID information transmission interface selection keys; A first transmitter / receiver for transmitting radio frequency identification information of the first RFID tag by transmitting a first RFID frequency to the first RFID tag; A second transmitter / receiver for transmitting radio frequency identification information of the second RFID tag by transmitting the second RFID frequency to the second RFID tag; A wired interface unit transmitting the received first or second RFID information to the application device; A Bluetooth wireless interface unit for transmitting the received RFID information to the application device according to a Bluetooth protocol; A storage unit for storing the selected RFID frequency band and the RFID information transmission interface setting information through the input unit; When the RFID frequency band and the RFID information transmission interface are selected through the input unit, the RFID unit stores the RFID frequency band and the RFID information transmission interface. When the RFID information read command is generated, the RFID unit receives the RFID information from the RFID tag through a transceiver corresponding to the set information. Radio frequency identification system using Bluetooth including a control unit for transmitting the received RFID information to the application device through. The method of claim 1, The RFID reader determines whether there is a pre-registered application device at power-on, and if there is a registered application device, the RFID reader is automatically wirelessly connected to the registered application device according to the Bluetooth protocol. The method of claim 1, The RFID reader determines whether there is a pre-registered application device when a Bluetooth wireless connection command is input, and if there is a registered application device, the RFID reader wirelessly connects to the registered application device according to the Bluetooth protocol. Frequency Identification System. The method according to claim 2 or 3, After the Bluetooth wireless connection, the RFID reader checks whether an application program for processing RFID information is installed in the application device, and if not installed, transmits and installs an application program installation program to the application device, and then reads RFID information. Radio frequency identification system using Bluetooth, characterized in that to perform the operation. delete The method of claim 1, And a display unit for displaying the RFID frequency band and the RFID information transmission interface setting information of the setting information under the control of the control unit. The method of claim 1, The storage unit further stores an application program installation program for processing RFID information, and the controller checks whether the application program for processing RFID information is installed in the application device after the Bluetooth wireless connection, and if not installed, And installing and transmitting the application program installation program to the application device, and then performing RFID information reading operation. An input unit having an RFID frequency band selection and an RFID information transmission interface selection key; A first transmitter / receiver that generates and transmits the first RFID frequency by using an RFID tag that transmits RFID information in response to a first RFID frequency, and receives the RFID information; A second transmitter / receiver that generates and transmits the second RFID frequency by using an RFID tag that transmits RFID information in response to a second RFID frequency, and receives the RFID information; A wired interface unit for transmitting the received RFID information to an application device; A Bluetooth wireless interface unit for transmitting the received RFID information to an application device according to a Bluetooth protocol; A storage unit for storing the selected RFID frequency band and the RFID information transmission interface setting information through the input unit; When the RFID frequency band and the RFID information transmission interface are selected through the input unit, the RFID frequency band and the RFID information transmission interface are selected and stored in the storage unit. And a control unit for transmitting the received RFID information to the application device through the RFID reader. The method of claim 8, The storage unit further stores an application program installation program for processing RFID information, After the Bluetooth wireless connection, the controller checks whether an application program for processing RFID information is installed in the application device. If not, the controller transmits and installs the application program installation program to the application device and then reads RFID information. Radio frequency identification reader using Bluetooth, characterized in that to perform the operation. The method of claim 8, The storage unit further stores the registration information for the application device capable of Bluetooth wireless connection, The control unit is a radio frequency identification reader using Bluetooth, characterized in that the automatic wireless connection to the application device of the registration information according to the Bluetooth protocol when the power on. delete delete delete

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