KR20090047069A - Rfid sensor tag supporting passive tag and method for driving the same - Google Patents

Abstract

Disclosed are a RFID sensor tag supporting a passive type and a method of operating the same. The RFID sensor tag supporting the passive type according to the present invention receives an activation mask from a reader and compares the received activation mask with an activation code in a memory to analyze whether the activation mask is identical to the activation code. And when the received activation mask and the activation code in the memory are the same, the wake-up of operating in an activation mode using a built-in first power source or a second power source generated through a signal from the reader. Means;

Battery Support, Passive, Semi-Passive, Tag, Reader, Sensor, Sensor Tag, Wake-Up

Description

RDF sensor tag supporting passive type and its operation method {RFID SENSOR TAG SUPPORTING PASSIVE TAG AND METHOD FOR DRIVING THE SAME}

The present invention relates to a battery-assisted wireless identification tag, and more particularly, to an RFID sensor tag supporting a passive type and a method of operating the same.

The invention of the Ministry of Information and Communication IT It is derived from the research conducted as part of the growth engine technology development project.

In general, radio frequency identification (RF) technology attaches a tag to each object, wirelessly recognizes a unique identifier (ID) of the object, and collects, stores, processes, and tracks the information. , A technology that provides services for remote processing, management and information exchange between objects. This technology is expected to form a new market by replacing the existing bar code, and applied to various fields such as security, as well as material management and distribution. In addition, in recent years, a wireless recognition technology for sensing and storing surrounding environment information is required in the market.

Accordingly, a battery-assisted wireless identification tag has been developed. It is also known as a semi-passive sensor tag, and unlike a conventional passive tag, it has its own power supply to perform functions such as collection and processing of surrounding environment information through this power supply in addition to tag-reader communication. That is, the battery-assisted wireless identification tag uses a passive backscattering method in communication with a reader, and uses a self-equipped battery as a main power source for sensing a surrounding environment information.

However, the conventional battery assisted wireless identification tag does not operate as a completely passive tag when operating in the standby mode. In other words, the conventional battery-assisted wireless identification tag has a problem in that it operates as a passive tag only when the battery has an insufficient amount to drive the chip.

The present invention has been made to improve the prior art as described above, an object of the present invention is to operate with the power supplied from the reader in the standby mode, in the activation mode can operate with its own power or generated power received from the reader An RFID sensor tag supporting a passive type and a method of operating the same are provided.

Another object of the present invention is to provide an RFID sensor tag and a method of operating the same, which support a passive type that can minimize power consumption by differently selecting a power supply according to an operation mode.

The object of the present invention is not limited to the above-mentioned objects, and other objects not mentioned will be clearly understood by those skilled in the art from the following description.

In order to achieve the above object and to solve the problems of the prior art, an RFID sensor tag supporting passive according to an aspect of the present invention, receives an activation mask from a reader, and compares the received activation mask with an activation code in a memory Analysis means for analyzing the identity between the activation mask and the activation code; And a wake-up means for operating in an activation mode using a built-in first power source or a second power source generated through a signal from the reader when the received activation mask and the activation code in the memory are the same. It includes.

If the wake-up means does not receive the activation mask from the reader, the wake-up means operates in a standby mode using the second power source, or as a result of the analysis, the received activation mask and the activation code in the memory are the same. If not, the second power supply may operate in the standby mode.

The wake-up means may operate in the activation mode using the second power when the level of the second power is greater than or equal to a predetermined power level.

The wake-up means may operate in the activation mode using the first power when the level of the second power is smaller than the predetermined power level.

The analyzing means may copy an activation code in the memory to a register in the wake-up means and compare the activation mask with an activation code copied in the register to analyze whether the activation mask and the activation code are identical. Can be.

The RFID sensor tag supporting the passive type according to an aspect of the present invention may further include real-time control means for operating the wake-up means in the activation mode through a signal output in a predetermined cycle unit.

The RFID sensor tag supporting passive type according to an aspect of the present invention may further include a sensor for sensing environmental information using the first power source or the second power source during the activation mode operation.

According to an aspect of the present invention, there is provided a method of operating a passive RFID sensor tag, the method comprising: receiving an activation mask from a reader; Comparing the received activation mask with an activation code in memory to analyze whether the activation mask is identical to the activation code; And if the received activation mask and the activation code in the memory are the same, operating in an activation mode using a built-in first power source or a second power source generated through a signal from the reader. .

According to an aspect of the present invention, there is provided a method of operating a passive RFID sensor tag, the method comprising: operating in a standby mode using the second power source when the activation mask is not received from the reader; Alternatively, when the received activation mask and the activation code in the memory are not the same, the method may further include operating in the standby mode using the second power source.

The step of operating in the activation mode may include operating in the activation mode using the second power when the level of the second power is greater than or equal to a predetermined power level.

In the operation of the activation mode, when the level of the second power is smaller than the predetermined power level, the operation may be performed in the activation mode using the first power.

The step of analyzing the identity comprises: copying an activation code in the memory to a register in the wake-up means; And comparing the activation mask with an activation code copied to the register, and analyzing whether the activation mask is identical to the activation code.

The operation method of the RFID sensor tag supporting the passive according to an aspect of the present invention may further include operating the wake-up means in the activation mode through a signal output in a predetermined cycle unit.

According to an aspect of the present invention, a method of operating an RFID sensor tag supporting a passive type may further include sensing surrounding environment information using the first power source or the second power source during the activation mode operation. have.

Specific details of other embodiments are included in the detailed description and the accompanying drawings.

Advantages and features of the present invention and methods for achieving them will be apparent with reference to the embodiments described below in detail with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below, but may be implemented in various different forms, only the present embodiments to make the disclosure of the present invention complete, and common knowledge in the art to which the present invention pertains. It is provided to fully inform the person having the scope of the invention, which is defined only by the scope of the claims. Like reference numerals refer to like elements throughout.

According to an embodiment of the present invention, the standby mode may operate with power supplied from the reader, and in the activation mode, may operate with power generated by itself or from the reader.

According to an embodiment of the present invention, power consumption may be minimized by differently selecting a power supply according to an operation mode.

Hereinafter, with reference to the accompanying drawings will be described in detail the RFID sensor tag and its operation method supporting the passive type according to an embodiment of the present invention.

Prior to describing an embodiment of the present invention, an operation mode of an RFID sensor tag supporting a passive type according to an embodiment of the present invention will be briefly described.

1) Mode Description

The life of the battery attached to the RFID sensor tag is limited. Therefore, the RFID sensor tag operates in two states, a hibernate mode or a sleep mode and an activation mode, to prolong the life of the battery.

2) Standby Mode Description

The standby mode is a mode in which an activation command including an activation mask is received from the reader for the RFID sensor tag and compared with an activation code previously stored in the tag. At the same time, the standby mode also operates the RFID sensor tag as a passive tag capable of communicating with a passive reader. In the standby mode, the power consumption of the tag chip must be minimized to maximize the life of the embedded battery.

3) Description of activation mode

The RFID sensor tag has an activation code corresponding to an activation mask sent from the reader, and uses the built-in battery as a main power source while the entire tag chip is activated. However, the RFID sensor tag may use the RF signal when the power generated by the RF signal from the reader is sufficient to drive the tag chip. This helps to minimize the power consumption of the built-in battery.

1 is a block diagram illustrating an RFID sensor tag supporting a passive type according to an embodiment of the present invention.

Referring to FIG. 1, an RFID sensor tag supporting a passive type according to an embodiment of the present invention includes an analysis means 110, a wake-up means 120, a real time control means 130, a sensor 140, and a control. Means 150 may be included.

The analyzing unit 110 may receive an activation mask from a reader, and compare the received activation mask with an activation code in a memory to analyze whether the activation mask is identical to the activation code.

At this time, the analysis means 110 may copy the activation code in the memory to a register in the wake-up means. In addition, the analyzing unit 110 may analyze the identity between the activation mask and the activation code by comparing the activation mask with the activation code copied to the register.

Accordingly, the analysis means 110 may perform the comparison operation at low power since the memory does not need to be accessed every time for the comparison between the activation mask and the activation code.

The wake-up means 120 uses a built-in first power source (battery) or a second power source generated by a signal from the reader when the analysis result indicates that the received activation mask and the activation code in the memory are the same. Can be operated in an active mode.

On the other hand, the wake-up means 120 may operate in the standby mode using the second power when the received activation mask and the activation code in the memory are not the same as a result of the analysis. Alternatively, when the wake-up means 120 does not receive the activation mask from the reader, the wake-up means 120 may operate in the standby mode using the second power source.

At this time, the wake-up means 120 may operate in the activation mode using the second power when the level of the second power is greater than or equal to a predetermined power level. Alternatively, the wake-up means 120 may operate in the activation mode using the first power when the level of the second power is smaller than the predetermined power level.

The real time control means 130 may operate the wake-up means 120 in the activation mode through a signal output in a predetermined cycle unit. That is, the real time control means 130 generates a POR (Power On Reset) signal that can determine whether the wake-up means 120 can be driven by the power delivered from the reader, in a predetermined cycle unit. The wake-up means 120 may be operated in the activation mode through the generated POR signal.

The sensor 140 may sense surrounding environment information using the first power source or the second power source during the activation mode operation. Here, the sensor 140 may include a temperature sensor, a humidity sensor, a chemical sensor, and the like. The sensor 140 may transfer the sensed surrounding environment information to the memory. The memory may store the transmitted environmental information.

Accordingly, when the RFID sensor tag according to the embodiment of the present invention receives a request for tag surrounding environment information from the reader, the RFID sensor tag may transmit the surrounding environment information stored in the memory to the reader.

The control means 150 may control the overall RFID sensor tag according to an embodiment of the present invention. That is, the control means 150 may control the operation of the RFID sensor tag including the analysis means 110, the wake-up means 120, the real time control means 130, the sensor 140, and the like.

2 is a block diagram illustrating an example of an RFID sensor tag supporting a passive type designed according to an embodiment of the present invention. 3 is a diagram illustrating the analog portion of FIG. 2, and FIG. 4 is a diagram illustrating the digital portion of FIG. 2.

First, referring to FIG. 2, the RFID tag may include an analog unit 210, a digital unit 220, a memory 230, a sensor 240, and a battery 250.

As shown in FIG. 3, the analog unit 210 manages power generation and supply of the entire tag, generates various clocks, and modulates / demodulates the communication for the reader. The power_bat and low-frequency clock signals for the wake-up module (410 of FIG. 4) and the RTC (420 of FIG. 4) that should always operate in the standby state are always supplied from the analog unit 210.

The RFID sensor tag includes analog circuits of an independent passive tag to enable communication with the passive reader. In the activated state, the RFID sensor tag properly uses the built-in power source (battery 250) and the power generated based on the RF signal of the reader to maximize the life of the built-in battery.

Details of operations of the analog unit 210 are as follows. For reference, the upper part is a module for the standby mode and the lower part is a module for passive tag operation based on the MAX selector 301. In addition, the power is represented by a thick line and the signal is represented by a thin line.

A bias generator I 302 directly forms a reference voltage through the built-in battery (battery 250). A constant voltage generator (regulator I) 303 is present for a stable power supply. The reference voltage generator 302 and the constant voltage generator 303 generate a low frequency clock for driving the wake-up module and the RTC. The power-up of the wake-up module and the RTC (Power_Bat) is generated in the constant voltage generator 303.

The OR gate 304 receives a wake-up enable signal or an RTC trigger signal from the digital unit 220, and when one of them is high, the OR gate 304 receives a high value. Output Herein, the wake-up enable or RTC trigger signal becomes high means an active state.

When the wake-up enable or RTC trigger signal goes high, switch 1 305 is on and switch 2 306 is off. On the other hand, when the wake-up enable or RTC trigger signal goes low, switch 1 305 is off and switch 2 306 is on.

That is, the wake-up module 410 of FIG. 4 may output a wake-up enable signal having a high value when the activation mask received from the reader through the antenna matches the activation code. Will occur. In addition, the RTC 420 of FIG. 4 generates an RTC trigger signal (RTC_trigger) having a high value every predetermined period to process data of the sensor at a predetermined period, that is, at a specified time. When either the wake-up enable signal or the RTC trigger signal is high, switch 1 305 is on.

Accordingly, the analog unit 210 operates by the generated power from the built-in battery (battery 250) or the reader, and processes the data of the sensor 240 or the memory 230 and the signal processing. It becomes possible.

Since the demodulator 307 needs to receive an activation mask even in a situation in which sufficient power is not supplied from the reader, the demodulator 307 receives the driving power from the built-in battery and always operates. However, the demodulator 307 does not need to be operated by the built-in battery in a situation where sufficient power can be supplied from the reader to drive the chip. That is, the demodulator 307 may be designed to be powered by the power of the battery 250 or the power of the reader.

The power on reset (POR) 308 serves to generate a POR signal that can determine whether the chip can be driven by the power delivered from the reader. That is, the POR 308 may use the POR signal to determine whether one of the power from the reader or the power of the battery 250 is determined as the power of the demodulator 307.

For reference, referring to FIG. 2, a circled point is shown, one of which is a power path between the built-in battery 250 and the demodulator 307, and the other is a power path between the reader and the demodulator 307. Indicates. When the signal generated from the POR 308 by the power path is low, the power supply (thick line) and the reference voltage by the constant voltage generator 303 and the reference voltage generator 302 connected to the built-in battery 250 are low. (Thin line) is supplied to the demodulator 307. On the other hand, if the signal generated from the POR 308 is high, the power and the reference by the constant voltage generator (Regulator II) 309 and the reference voltage generator (Bias Generator II) 310 connected to the switch 2 (306) Voltage is supplied to the demodulator 307.

In other words, when the POR 308 signal becomes high, the demodulator 307 can operate even with the RF signal from the reader. Therefore, the built-in battery 250 does not need to be used for driving the demodulator 307. In addition, when the POR 308 signal is low, the RF signal is insufficient to operate the demodulator 307. Therefore, the demodulator 307 may operate using the built-in battery 250.

The power detector 311 generates a low signal when the built-in power supply 250 decreases below a threshold level. Here, the signal is named 'Bat_dec', and this signal is applied to the wake-up module 410 of FIG. The Bat_dec signal is used to stop a process of processing data of the sensor 240.

The module for passive operation located at the bottom of the maximum selector 301 is the same as the analog part of the conventional passive tag chip. Therefore, description thereof will be omitted herein.

Power_ch [2: 0] generated by the constant voltage generator (regulator II) is composed of a total of three connection lines. The reason for forming the powers as described above is to allow the powers (Power_ch [2: 0]) to be selected in accordance with the power supply of the digital unit 220 connected thereto. Accordingly, the RFID tag can minimize the loss of static power.

For a more detailed description, FIG. 3 is divided into a case of operating in a standby mode and an active mode.

First, the case where the analog unit is in the standby mode will be described.

1. The wake-up enable signal or the RTC trigger signal is both low, so switch 2 306 is on and switch 1 305 is off. The analog unit 210 and the digital unit 220 for the passive tag operate only by the power generated from the reader.

2. The power source and reference voltage of the demodulator 307 is selected in two paths by the POR 308 as described above.

3. Entering the wake-up module or RTC of the digital unit 220 is a power supply signal called Power_Bat, a low frequency clock, and a power detection signal called Bat_dec. The wake-up module or RTC of the digital unit 220 receives the power, low frequency clock, and power detection signals, and always operates stably independently of other modules.

4. The analog unit 210 for the passive tag below the maximum selector 301 is structurally identical to the conventional passive tag chip. Power for operation is also generated via the RF signal from the reader.

Next, a case where the analog unit is in the activation mode will be described.

1. Since either the wake-up enable signal or the RTC trigger signal is high, switch 1 305 is turned on and switch 2 306 is turned off.

2. The entire chip operates through the built-in battery 250. However, the RF signal is used when a sufficient RF signal is applied from the reader to operate the chip.

3. The power supply and reference voltage of the demodulator 307 is always applied through the constant voltage generator (Regulator II) 209 and the reference voltage generator (Bias Generator II) 310. This is because the analog tag 210 for the passive tag under the maximum selector 301 is always connected to the power through the switch 1 (305).

4. Entering the wake-up module or the RTC of the digital unit 220 is a power sensing signal called a power_bat, a low frequency clock, and a bat_dec. The wake-up module or RTC of the digital unit 220 receives the power, low frequency clock, and power detection signals, and always operates stably independently of other modules.

As illustrated in FIG. 4, the digital unit 220 receives power from the analog unit 210 and operates. The digital unit 220 may include a wake-up module 410, an RTC 420, a command processor 430, a sensor controller 440, a memory controller 450, and a clock. It may include a controller (Clock Controller) 460.

Here, all the modules other than the wake-up module 410 are used separately from each other so that they are received from the analog unit 210 only when a power supply is required. Therefore, the digital unit 220 may extend the life of the built-in battery 250.

Once the battery is attached for internalization, the web wake-up module 410 temporarily activates the memory controller 450 to register a low-power drive register within the wake-up module 410 that activates the activation code stored in the memory 230. Copy to

Unlike the decoder 431 of the instruction processor 430, the wake-up module 410 has a separate decoder to decode the activation mask received from the reader. In addition, the wake-up module 410 processes the matching between the activation mask and the activation code.

That is, the wake-up module 410 may include the analysis means 110 and the wake-up means 120 of FIG. 1.

The analyzing means may receive an activation mask from a reader, and compare the received activation mask with an activation code in the register to analyze whether the activation mask and the activation code are identical.

The wake-up means may operate in the activation mode by using the power generated through the RF signal from the battery 250 or the reader when the received activation mask and the activation code in the memory are the same. .

On the other hand, the wake-up means may operate in the standby mode by using the power supplied from the reader when the analysis result indicates that the activation mask and the activation code are not the same. Alternatively, when the wake-up means does not receive the activation mask from the reader, the wake-up means may operate in the standby mode using the power supplied from the reader.

At this time, the wake-up means may operate in the activation mode using the power supplied from the reader when the level of the power supplied from the reader is greater than or equal to the predetermined power level. Alternatively, the wake-up means may operate in the activation mode using the battery 250 when the level of the power supplied from the reader is smaller than the predetermined power level.

In addition, the wake-up means, when operating in the activation mode, sends a wake-up enable (wakeup_enable) signal to the entire chip notifying that the chip is in an activated state.

The RTC 420 generates an RTC trigger signal in units of a predetermined period. The generated RTC trigger signal (RTC_trigger) becomes high when a schedule is previously determined to process data of the sensor 240 at a designated time.

The instruction processor 430 includes a decoder 431, an analyzer 432, an executor 433, a responder 434, and an encoder 435. The command processor 430 processes an existing manual type command and a command for processing sensor information.

The sensor controller 440 processes the data of the sensor 240.

The memory controller 450 manages the memory 230 such as storing data (sensor information) processed by the sensor controller 440 in the memory 230.

Clock controller 460 provides a low frequency clock to wake-up module 410 and RTC 420 and provides a high frequency clock (HF clock) to components other than wake-up module 410 and RTC 420. do. However, since different clocks are required for each module, the clock controller 460 may manage and control the clocks delivered to the respective modules.

For reference, the circled portions are switches for reducing static power consumption. The switches are on when the connected thin line signal is high, and the switches are off when low.

5 is a flowchart illustrating a method of operating an RFID sensor tag supporting a passive type according to an embodiment of the present invention.

1 and 5, in operation S510, the analyzing means 110 may receive an activation mask from a reader.

Next, in operation S520, the analyzing unit 110 may compare the received activation mask with an activation code in a memory to analyze whether the activation mask is identical to the activation code.

At this time, the analysis means 110 may copy the activation code in the memory to a register in the wake-up means. In addition, the analyzing unit 110 may analyze the identity between the activation mask and the activation code by comparing the activation mask with the activation code copied to the register.

As a result of the analysis, when the received activation mask and the activation code in the memory are the same (YES direction in S530), in step S540, the wake-up means 120 is connected to a built-in first power source (battery) or the reader. The second power source generated through the signal may operate in the activation mode.

On the other hand, when the analysis result indicates that the received activation mask and the activation code in the memory are not the same (NO direction in S530), the wake-up means 120 uses the second power source in step S550. It may operate in the standby mode. Alternatively, when the wake-up means 120 does not receive the activation mask from the reader, the wake-up means 120 may operate in the standby mode using the second power source.

At this time, the wake-up means 120 may operate in the activation mode using the second power when the level of the second power is greater than or equal to a predetermined power level. Alternatively, the wake-up means 120 may operate in the activation mode using the first power when the level of the second power is smaller than the predetermined power level.

Meanwhile, the real time control means 130 may operate the wake-up means 120 in the activation mode through a signal output in a predetermined cycle unit. That is, the real time control means 130 generates a POR (Power On Reset) signal that can determine whether the wake-up means 120 can be driven by the power delivered from the reader, in a predetermined cycle unit. The wake-up means 120 may be operated in the activation mode through the generated POR signal.

The sensor 140 may sense surrounding environment information by using the first power source or the second power source during the activation mode operation. Here, the sensor 140 may include a temperature sensor, a humidity sensor, a chemical sensor, and the like. The sensor 140 may transfer the sensed surrounding environment information to the memory. The memory may store the transmitted environmental information.

Accordingly, when the RFID sensor tag according to the embodiment of the present invention receives a request for tag surrounding environment information from the reader, the RFID sensor tag may transmit the surrounding environment information stored in the memory to the reader.

An operating method of an RFID sensor tag supporting a passive type according to an embodiment of the present invention includes a computer readable medium including program instructions for performing various computer-implemented operations. The computer readable medium may include program instructions, local data files, local data structures, or the like, alone or in combination. The media may be those specially designed and constructed for the purposes of the present invention, or they may be of the kind well-known and available to those having skill in the computer software arts. Examples of computer-readable recording media include magnetic media such as hard disks, floppy disks, and magnetic tape, optical recording media such as CD-ROMs, DVDs, magnetic-optical media such as floppy disks, and ROM, RAM, flash memory, and the like. Hardware devices specifically configured to store and execute the same program instructions are included. Examples of program instructions include not only machine code generated by a compiler, but also high-level language code that can be executed by a computer using an interpreter or the like.

Although specific embodiments of the present invention have been described so far, various modifications are possible without departing from the scope of the present invention. Therefore, the scope of the present invention should not be limited to the described embodiments, but should be determined not only by the claims below, but also by the equivalents of the claims.

As described above, the present invention has been described by way of limited embodiments and drawings, but the present invention is not limited to the above-described embodiments, which can be variously modified and modified by those skilled in the art to which the present invention pertains. Modifications are possible. Accordingly, the spirit of the present invention should be understood only by the claims set forth below, and all equivalent or equivalent modifications thereof will belong to the scope of the present invention.

1 is a block diagram illustrating an RFID sensor tag supporting a passive type according to an embodiment of the present invention.

2 is a block diagram illustrating an example of an RFID sensor tag supporting a passive type designed according to an embodiment of the present invention.

3 is a diagram illustrating an analog unit of FIG. 2.

4 is a diagram illustrating the digital unit of FIG. 2.

5 is a flowchart illustrating a method of operating an RFID sensor tag supporting a passive type according to an embodiment of the present invention.

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

110: means of analysis

120: wake-up means

130: real time control means

140: sensor

150: control means

Claims (14)

Analysis means for receiving an activation mask from a reader and comparing the received activation mask with an activation code in a memory to analyze whether the activation mask is identical to the activation code; And As a result of the analysis, when the received activation mask and the activation code in the memory are the same, wake-up means for operating in an activation mode using a built-in first power source or a second power source generated through a signal from the reader. RFID sensor tag supporting the passive type, characterized in that it comprises a. The method of claim 1, The wake-up means, If the activation mask is not received from the reader, operates in a standby mode using the second power source, or And, if the received activation mask and the activation code in the memory are not the same as the result of the analysis, operating in the standby mode using the second power source. The method of claim 1, The wake-up means, And the second power supply is greater than or equal to a predetermined power supply level, and operates in the activation mode using the second power supply. The method of claim 1, The wake-up means, And the second power supply is smaller than the predetermined power supply level, and operates in the activation mode using the first power supply. The method of claim 1, The analysis means, Copy the activation code in the memory to a register in the wake-up means and compare the activation mask with the activation code copied to the register to analyze the identity between the activation mask and the activation code. RFID sensor tag that supports the. The method of claim 1, Real time control means for operating the wake-up means in the activation mode through a signal output in a predetermined period unit RFID sensor tag supporting the passive type further comprising a. The method of claim 1, Sensor for sensing the surrounding environment information by using the first power or the second power during the activation mode RFID sensor tag supporting the passive type further comprising a. Receiving an activation mask from a reader; Comparing the received activation mask with an activation code in a memory to analyze whether the activation mask is identical to the activation code; And As a result of the analysis, when the received activation mask and the activation code in the memory are the same, operating in an activation mode using a built-in first power source or a second power source generated through a signal from the reader Operating method of the RFID sensor tag supporting the passive, characterized in that it comprises a. The method of claim 8, If the activation mask is not received from the reader, operating in a standby mode using the second power source; or As a result of the analysis, when the received activation mask and the activation code in the memory are not the same, operating in the standby mode using the second power source Operation method of the RFID sensor tag that supports the passive type further comprising a. The method of claim 8, The step of operating in the activation mode, Operating in the activation mode using the second power when the level of the second power is greater than or equal to a predetermined power level. Operating method of the RFID sensor tag supporting the passive, characterized in that it comprises a. The method of claim 8, The step of operating in the activation mode, And operating in the activation mode using the first power source when the level of the second power source is less than the predetermined power source level. The method of claim 8, The step of analyzing the identity is, Copying an activation code in the memory to a register in the wake-up means; And Comparing the activation mask with an activation code copied to the register to analyze whether the activation mask is identical to the activation code; Operating method of the RFID sensor tag supporting the passive, characterized in that it comprises a. The method of claim 8, Operating the wake-up means in the activation mode through a signal output in predetermined cycle units Operation method of the RFID sensor tag that supports the passive type further comprising a. The method of claim 8, Sensing surrounding environment information using the first power source or the second power source during the activation mode operation Operation method of the RFID sensor tag that supports the passive type further comprising a.

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