KR100780729B1 - RFID Reader Intergration Module - Google Patents

Abstract

The present invention relates to an RFID reader integrated module having a ubiquitous sensor network (hereinafter USN) function, and more particularly, to integrate an RFID reader module and a USN module into one, and existing between a server as well as an RFID reader integrated module and a tag module. The present invention relates to an integrated RFID reader module capable of implementing a sensor network while maintaining its RFID function.

The RFID reader integrated module according to the present invention includes a USN module and an RFID reader module; Environment detection is possible, and a plurality of USN tag modules to which unique information is stored are connected to a wireless network to read and decode information of the USN tag module to transmit and receive data, and to record necessary information in the USN tag module. It is characterized by.

Ubiquitous Computing, Wireless Sensor Networks, USN, RFID Readers, Integrated Modules

Description

RF Reader Intergration Module with ubiquitous sensor network

1 is a block diagram of a general RFID communication system.

2 is a block diagram of a communication system equipped with an RFID reader integrated module according to the present invention.

Figure 3 is a block diagram showing the internal configuration of the RFID reader integrated module according to the present invention.

4 is an exemplary view showing a data flow of a communication system having an RFID reader integrated module according to the present invention.

<Description of the symbols for the main parts of the drawings>

100a, 100b, 100c, 100d: USN Tag Module

200: RFID Reader Module

201: antenna 202: RF transmitter

203: RF receiver 204: controller

205: oscillator 206: power amplifier

207: FAS 208: peak detector

209: MEM 210: drive unit

211: connector 300: server

400: USN module 401: antenna

402: RF transceiver 403: control unit

404: MAC 405: storage unit

406: A / D conversion unit 407: detection unit

408 connector 409 sensor application

500: flat cable 600: RFID reader integrated module

The present invention relates to an RFID reader integrated module having a ubiquitous sensor network (hereinafter USN) function, and more particularly, to integrate an RFID reader module and a USN module into one, and existing between a server as well as an RFID reader integrated module and a tag module. The present invention relates to an integrated RFID reader module capable of implementing a sensor network while maintaining its RFID function.

Countries around the world are accelerating the convergence of broadband and technology convergence to the ubiquitous computing environment not only in the information and telecommunications industry but also throughout the industry.

In particular, as objects and physical objects scattered in the living environment gradually expand to information objects, Ubiquitous Computing provides various new and convenient services by connecting humans, computers, and objects organically. There is a growing interest.

The ubiquitous computing environment starts from embedding computing, sensing, and communication functions in all things, and sensor network technology that performs sensing and control of the external environment of human beings is in the spotlight as a core technology.

In other words, Ubiquitous Sensor Network (USN) is to attach electronic tags to all things to recognize things and environment and to build and utilize real-time information through the network.

 The ubiquitous sensor network initially establishes an Ad-hoc network to perform communication functions between tags by adding a sensing function and simultaneously obtaining environmental information in identifying an object through an electronic tag. As a result, tags have been developed to control tags having a relatively small function.

1 is a configuration diagram showing a connection state of a general RFID communication system.

As shown in FIG. 1, a plurality of RFID tags 10a, 10b, 10c, and 10d storing unique information perform a read and decryption function by a wireless network. Connected with

The RFID reader 20 is connected to a server 30 that processes read data from the reader and the tag by a wired network such as RS-232, RS-422, or RS-485.

That is, the RFID tags 10a, 10b, 10c, and 10d are composed of an antenna and a low power IC circuit to transmit and receive data while communicating with a reader, and the RFID reader 20 is a tag. After reading the information of), and transmits to the server (30).

However, such a conventional RFID system reads information in a tag at a short range of time, and performs only data transmission / reception, and does not detect a change in the surrounding environment because there is no sensing function. The inability to perform functions in real time has limited the technical development of many applications and the application of field products.

In addition, the tag and the reader of the conventional RFID system performs wireless communication, but the network configuration of the reader and server section is mostly connected with a thick cable (RS-232, RS-422, RS-485) to transmit and receive data, thereby high cost and low efficiency. Many difficulties have arisen when constructing a large number of networks.

Accordingly, the present invention was created to solve the above-described problems, RFID reader integrated module with a USN function that can implement the sensor network in the reader as well as the existing RFID and tag functions in the wireless sensor network environment. The purpose is to provide.

Another object of the present invention is to implement a ubiquitous sensor network (USN) to enable the recognition of the surrounding environment, the communication between the tag and the reader, the communication between the tags, and the communication between the readers, so that the USN function having low cost and high efficiency is achieved. In order to provide an RFID reader integrated module provided.

RFID reader integrated module with a USN function according to the present invention for achieving the above object comprises a USN module and an RFID reader module; It is possible to detect the environment, and it is connected by a wireless network with a plurality of USN tag modules to which tags with unique information are stored, to read and decode the information of the USN tag module, to transmit and receive data, and to record necessary information in the USN tag module. It features.

Here, the transmission and reception frequency of the RFID reader integrated module is 125KHz ~ 2.45GHz band.

In addition, the USN between the RFID reader integrated module and the USN tag module transmits data by 900MHz or 2.4GHz bidirectional wireless communication.

In addition, the RFID reader integrated module has a structure in which the RFID reader module and the USN module are interconnected by a flat cable.

Here, the RFID reader module, the antenna; An RF transmitter for processing an RF signal and transmitting the signal through an antenna; An RF receiver configured to signal-process an RF signal received through the antenna; An oscillator for oscillating according to the output of the RF signal; A power amplifier for amplifying the power according to the output of the RF signal; A peak detector detecting a peak value of the received RF signal; A FAS for filtering, amplifying, and pulse shaping the signal detected by the peak detector; A MEM that stores a program downloaded from the outside and read data; A driver for driving an interface with the USN module; And a control unit that performs a read and decryption function of the RFID reader and controls the respective components.

In addition, the USN module, the antenna; An RF transceiver for transmitting and receiving the RF signal; A MAC for controlling protocol conversion and access problems of the data link layer according to characteristics of a sensor node operating with mobility in various environments; A storage unit for storing a program downloaded from the sensor application; An A / D converter converting an analog signal into a digital signal; A detector for detecting information from a sensor attached directly or through a cable; And a controller for processing data and controlling each component in accordance with a program stored in the storage unit.

Wherein the antenna is a ceramic chip antenna.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

2 is a block diagram of a communication system equipped with an RFID reader integrated module according to the present invention.

Prior to the detailed description of the present invention, the ubiquitous sensor network (USN) attaches RFID wherever necessary, and detects even environmental information (temperature, humidity, pollution information, crack information, etc.) of the surroundings based on the recognition information of the object. It is a technology that can manage the information by connecting to the network in real time, and can implement the communication environment by adding computing and communication to all things.

As shown in FIG. 2, the USN / RFID integrated module system according to the present invention includes a plurality of USN tag modules 100a, 100b, 100c, and 100d capable of sensing the environment by an RFID reader by a wireless network. It is connected to the integrated module 600. The RFID reader integrated module is connected to a server 300 by a wired or wireless network.

The communication system equipped with the RFID reader integrated module of the present invention centrally monitors the surrounding environment by adding the USN sensing (temperature, humidity, light, location, etc.) function and communication function between objects to the simple function of the conventional RFID. And control is possible.

The USN tag module (100a, 100b, 100c, 100d) transmits and receives data while communicating with the RFID reader integrated module 600, the RFID reader integrated module 200 reads the information of the USN tag module server 300 Will be sent with

In more detail, the USN tag modules 100a, 100b, 100c, and 100d use an internal battery (active tag), store information so that they can be read, and wireless transmission / reception with neighboring USN tag modules. Possible to perform the function of Ad-hoc.

The RFID reader integrated module 600 can read information of the USN tag module, read and decode the read information, transmit and receive data, and record necessary information in the USN tag module.

Figure 3 is a block diagram showing the internal configuration of the RFID reader integrated module according to the present invention.

As shown in FIG. 3, the RFID reader integrated module is configured in a structure in which the RFID reader module 200 and the USN module 400 are interconnected by a flexible flat cable 500.

The RFID reader module 200 includes an antenna 201, an RF transmitter 202, an RF receiver 203, a controller 204, an oscillator 205, a power amplifier 206, a FAS 207, and a peak. The detector 208, the MEM 209, the driver 210, and the connector 211 are configured.

The antenna 201 transmits and receives a frequency in the 900 MHz band, for example, the RF transmitter 202 processes the RF signal through the antenna 201 and the RF receiver 203 through the antenna 201. Signal the received RF signal.

The control unit 204 performs a function of reading and decoding the RFID reader, controlling each component, and the oscillator 205 generates an oscillation according to the output of the RF signal, and the power amplifier 206. ) Amplifies the power according to the output of the RF signal.

The filtering amplifying shaping (FAS) 207 filters, amplifies, and pulses the signal detected by the peak detector 208, and the peak detector 208 functions to detect the peak value of the received RF signal.

The MEM 209 stores a program downloaded from the server as a memory, the driver 210 drives an RS-232C interface with the USN module 400, and the connector 211 is a connector for transmitting an RFID reader input / output signal. Play a role.

Meanwhile, the configuration of the USN module 400 includes an antenna 401, an RF transceiver 402, a controller 403, a MAC 404, a storage 405, an A / D converter 406, and a detector. 407, connector 408 and sensor application 409.

For example, the antenna 401 may be a ceramic transceiver antenna of 125 KHz to 900 MHz, and the RF transceiver 402 may transmit and receive an RF signal.

The control unit 403 processes signals and controls each component according to a program stored in the storage unit 405, and the media access controller (MAC) 404 has a protocol according to characteristics of sensor nodes operating with mobility in various environments. Control access issues in the translation and data link layers.

The storage unit 405 stores a program downloaded from the sensor application 409, and the A / D converter 406 functions to convert an analog signal into a digital signal.

The sensing unit 407 senses information from a sensor attached directly or through a cable, and the connector 408 serves as a connector connected to the RFID reader board through the flat cable 500.

In the exemplary embodiment of the present invention, the USN module 400 and the RFID reader module 300 are connected to each other by a flat cable 500. However, the USN module 400 and the RFID reader module 300 may be integrally mounted on one PCB or stacked up and down to reduce the size. have.

4 is an exemplary view showing a data flow of a communication system having an RFID reader integrated module according to the present invention.

As shown in FIG. 4, for example, 900 MHz bidirectional wireless communication is possible between the server 300 and the RFID reader integrated module 600. In addition, 900MHz bidirectional wireless communication is possible between the USN between the RFID reader integrated module 600 and the USN tag module 100.

However, one-way wireless communication of 125 / 134KHz is possible between the RFID reader of the RFID reader integrated module 600 and the RFID tag of the USN tag module 100.

Therefore, when the USN tag receives the 125 / 134KHz signal of the USN reader and transmits data to the USN module, the USN tag of the USN tag communicates the received data with the USN reader through the USN module.

As described above, according to the present invention, in addition to the existing RFID function and tag function in a wireless sensor network environment of 125 KHz to 900 MHz, an RFID reader integrated module capable of sensor networking in a reader is provided. The implementation has the following effects:

First, by applying the USN module to the RFID tag, reader, and server section, the sensing function of the USN and the communication function between objects can be added to read / write, so that the surrounding environment can be centrally monitored and controlled.

Second, even when the position of RFID tag, reader and server is changed, the position can be moved without additional network work, and there is no need for cables (RS-232, RS-422, RS-485, etc.), thereby reducing the cost.

Third, by implementing a ubiquitous sensor network (USN), it is possible to recognize the surrounding environment, communication between tags and readers, communication between tags, and communication between readers organically to enable low cost and high efficiency.

Claims (7)

delete delete delete delete delete delete USN tag module 100 consisting of a USN for detecting the status information of the surrounding and the unique information RFID tag, and the USN tag module 100 is capable of wireless data transmission and reception between the USN with other neighboring USN tag module 100 Performs an ad-hoc function, obtains the state information around the USN collected from the USN of the USN tag module 100 and the unique information from the RFID tag, and obtains the acquired state information around the USN and the RFID tag. In the RFID reader integrated module 600 consisting of the RFID reader module 200 and the USN module 400 to read and decrypt the unique information to transmit and receive to the server 300, The RFID reader module 200; An antenna 201 for transmitting and receiving an RF signal with an RFID tag of the USN tag module 100 and an RF signal for processing an RF signal for transmitting from the antenna 201 to an RFID tag of the USN tag module 100. Transmitter 202, RF receiver 203 for signal processing the RF signal received from the RFID tag of the USN tag module 100 to the antenna 201, and the oscillator 205 oscillating in accordance with the output of the RF signal ), A power amplifier 206 for amplifying power in accordance with the output of the RF signal, a peak detector 208 for detecting peak values of the received RF signal, and a signal detected by the peak detector. FAS 207 for filtration, amplification, and pulse shaping, MEM 209 for storing programs and read data downloaded from the outside, a drive unit 210 for driving the interface with the USN module 400, and the USN tag module. Read and decrypt the RFID tag information of 100 A control unit 204 for controlling each component; The USN module 200; An antenna 401 which transmits and receives a bidirectional RF signal with the server 300 and transmits and receives a bidirectional RF signal between the USN of the USN module 200 and the USN of the USN tag module 100, and transmits and receives the RF signal. The RF transceiver 402 processes the MAC 404 for controlling protocol change and data link layer access problems according to the characteristics of the sensor node operating with mobility in various environments, and is downloaded from the sensor application 409. A storage unit 405 for storing a program, an A / D converter 406 for converting an analog signal to a digital signal, a detector 407 for sensing information from a sensor attached directly or through a cable, and A control unit 403 for processing data and controlling each component according to a program stored in the storage unit to perform an Ad-hoc function; The RFID reader module 200 and the USN module 400 are interconnected to each other and are composed of a flat cable 500; Two-way wireless communication between the USN of the USN module 400 and the USN of the USN tag module 100 detecting the state information of the surroundings, and between the RFID reader module 200 and the RFID tag of the USN tag module 100 In addition to the communication, the USN tag module 100 status information and the USN around the USN tag module 100 to the server 300 located in the far distance by the communication between the RFID tag of the USN tag module 100 and the RFID tag of the neighboring USN tag module. RFID reader integrated module with a USN function, characterized in that for transmitting the unique information about the RFID tag of the tag module 100 by wireless.

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