KR20150137885A - Rfid tag and method which manage power consumption of rfid tag - Google Patents

Rfid tag and method which manage power consumption of rfid tag Download PDF

Info

Publication number
KR20150137885A
KR20150137885A KR1020140066517A KR20140066517A KR20150137885A KR 20150137885 A KR20150137885 A KR 20150137885A KR 1020140066517 A KR1020140066517 A KR 1020140066517A KR 20140066517 A KR20140066517 A KR 20140066517A KR 20150137885 A KR20150137885 A KR 20150137885A
Authority
KR
South Korea
Prior art keywords
power
rfid tag
gps module
reader
command
Prior art date
Application number
KR1020140066517A
Other languages
Korean (ko)
Inventor
유재형
Original Assignee
(주)알에프캠프
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by (주)알에프캠프 filed Critical (주)알에프캠프
Priority to KR1020140066517A priority Critical patent/KR20150137885A/en
Publication of KR20150137885A publication Critical patent/KR20150137885A/en

Links

Images

Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K19/00—Record carriers for use with machines and with at least a part designed to carry digital markings

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Near-Field Transmission Systems (AREA)

Abstract

The present invention relates to a radio-frequency identification (RFID) tag and a method for managing power supply to the same. More specifically, the RFID chip includes a GPS module, an active radio-frequency (RF) chip, and a sensor. The method is used to manage the power supply to the GPS module, the active RF chip, and the sensor of the RFID tag.

Description

TECHNICAL FIELD [0001] The present invention relates to a method of managing power of an RFID tag and an RFID tag,

[0001] The present invention relates to a method of managing the power supply of an RFID tag and an RFID tag, and more particularly, to a method of managing power of an RFID tag and an RFID tag, and more particularly to an RFID tag including an active RF chip, a sensor, a GPS module of an RFID tag, The method comprising:

A related art related to this is an RFID tag and a program recording medium (Korean Patent Publication No. 2007-0105475). In the conventional art, an RFID tag includes a power management unit that supplies power to a sensor unit according to an operation cycle of the sensor.

1 shows an RFID configuration for managing battery power of an active sensor RFID according to the prior art.

1, the active sensor RFID includes a sensor unit 20 including an RFID chip 10 according to a wireless interface standard, at least one sensor 21 and a sensor processing unit 22, And a battery 40 for supplying a predetermined power source. In order to perform the battery power management function according to the present invention, the RFID chip 10, the sensor unit 20 and the battery 40 And a predetermined power management unit (30).

The RFID chip 10 transmits and receives a predetermined radio frequency signal to at least one or more RFID readers through at least one of the ISO / IEC 18000 series standards. It is preferable to include a communication protocol corresponding to the interface standard.

The sensor unit 20 includes at least one sensor 21 for detecting various environments such as a temperature sensor and / or a pressure sensor and / or a humidity sensor, and a sensor unit 21 for sensing predetermined sensing data And a sensor processing unit 22 for extracting (or generating) and managing the sensed data. In this case, the sensed data preferably includes digitized information.

The power management unit 30 receives a predetermined battery 40 power from a battery 40 provided in the sensor RFID and supplies the power of the battery 40 to the RFID chip 10 and / The power management unit 30 controls the power supply of the battery 40 to the RFID chip 10 and / or the sensor unit 20. For example, At least one control bus (BUS) for transmitting and receiving a predetermined command to / from the RFID chip 10 and / or the sensor unit 20, and / And at least one data bus for transmitting / receiving predetermined data to / from the RFID chip and / or the sensor unit is connected.

The RFID tag according to the prior art is characterized by supplying power to the active RFID chip, and stores the operation time in advance, and supplies power only to the stored operation time. The power is supplied only considering the time without considering the position of the tagged article.

It is an object of the present invention to provide an RFID tag including a GPS module, a sensor, and an active RFID chip that can operate for a longer time by minimizing power consumption.

It is another object of the present invention to provide an RFID tag capable of turning off the power of a GPS module, a sensor, and an active RFID chip remotely in an area where operation is not required.

Furthermore, it is an object of the present invention to provide an RFID tag capable of turning on power of a GPS module, a sensor, and an active RFID chip remotely in an area requiring operation.

A power management method of an RFID tag including at least one of a GPS module, an active RF chip, and a sensor according to an embodiment of the present invention is a method of managing a power source of a GPS module, an active RFID chip, Transmitting a response including at least one power state; And receiving an instruction to turn on at least one of the GPS module, the active RF chip, and the sensor from the reader.

According to another aspect of the present invention, there is provided a method of managing power of a GPS module included in an RFID tag, the method comprising: receiving a first command for requesting a power status of the GPS module from a reader in a range in which the RFID tag can communicate; Transmitting, by the RFID tag, a response to the first command including a power state of the GPS module to the reader; Receiving a second command to turn off the power of the GPS module so that the RFID tag stops communication with the satellite from the reader when the power state of the GPS module is ON, Receiving a third command to turn on the power of the GPS module so that the RFID tag communicates with the satellite from the reader when the state is OFF; And the RFID tag having received the second command turns off the power of the GPS module included in the RFID tag, and when the RFID tag receiving the third command turns off the power of the GPS module included in the RFID tag And turning on the power supply.

In another aspect of the present invention, there is provided a method of managing power of an active RFID chip included in an RFID tag, the method comprising: receiving, from a reader in a communication range of the RFID tag, Receiving a fourth command for requesting a fourth command; Transmitting, by the RFID tag, a response to the fourth command including the power state of the active RFID chip to the reader; Wherein when the power state of the active RFID chip is on, the RFID tag receives a fifth command from the reader to turn off power of the active RFID chip, and when the power state of the active RFID chip is off Receiving a sixth command from the reader to turn on the power of the active RFID chip when the RFID tag is turned off; And the RFID tag having received the fifth command turns off the power of the active RFID chip and the RFID tag having received the sixth command turns on the power of the active RFID chip included in the RFID tag ON).

A method of managing a power source of a sensor included in an RFID tag according to another embodiment of the present invention includes the steps of receiving a request for a power status of a sensor provided in the RFID tag from a reader in a range in which the RFID tag can communicate, 7 receiving an instruction;

Transmitting, by the RFID tag, a response to the seventh instruction including the power state of the sensor to the reader; When the power supply state of the sensor is ON, the RFID tag receives an eighth command to turn OFF the power of the sensor from the reader, and when the power state of the sensor is OFF, Receiving a ninth command that the RFID tag turns on the power of the sensor from the reader; And the RFID tag having received the eighth command turns off the power of the sensor and the RFID tag having received the ninth command turns on the power of the sensor included in the RFID tag ; ≪ / RTI >

A GPS module having a GPS module and an RFID chip according to an embodiment of the present invention includes a GPS module for communicating with a satellite and exchanging data; A GPS module that receives data from the GPS module and calculates position coordinates and time values; An RFID chip that communicates with a reader, receives an instruction from the reader, and transmits a response according to the received instruction; A power supply unit for selectively supplying power to the GPS module according to the control; A power management unit for analyzing a command received through the RFID chip and for turning on or off the power of the GPS module according to the command and for allowing the power supply unit to supply power to the GPS module; .

The RFID chip receives a command for requesting the power status of the GPS module from the reader, and transmits a response to the command including the power status of the GPS module to the reader.

The RFID chip receives a command to turn on the power of the GPS module from the reader or an instruction to turn off the power of the GPS module and transmits the command to the power management unit, And controls the power supply unit not to supply or supply the GPS module according to the command.

The RFID tag having the GPS module and the RFID chip according to an embodiment of the present invention may further include an active RFID chip that is supplied with power from the power supply unit and the RFID chip requests the power state of the active RFID chip from the reader Receiving a command, and transmitting a response to the command to the reader.

The RFID chip receives an instruction to turn on the power of the active RFID chip from the reader or an instruction to turn off the power of the active RFID chip,

The power management unit controls the power supply unit to supply power to the active RFID chip according to the command.

A power management method of an RFID tag including at least one of a GPS module, an active RFID chip, and a sensor according to an embodiment of the present invention transmits a response including an ID value of the RFID tag to a reader in a communication range of the RFID tag step; And receiving an instruction from the reader to turn on at least one of the GPS module, the active RFID chip, and the sensor from the reader.

A method for managing power of a GPS module, an active RFID chip, and a sensor included in an RFID tag according to another embodiment of the present invention includes receiving an instruction for requesting an ID from a reader in a range in which an RFID tag can communicate; The RFID tag transmitting a response to the command including the ID to the reader; Receiving an instruction to turn on or off the at least one of the GPS module, the active RFID chip, and the sensor from the reader according to the ID value; The RFID tag turns off the power of at least one of the GPS module, the active RFID chip and the sensor included in the RFID tag according to the received command, or the RFID tag, which receives the third command, And turning on at least one of the GPS module, the active RFID chip, and the sensor included in the tag.

The present invention minimizes the power consumption of the GPS module, the sensor, and the active RFID chip included in the RFID tag, thereby enabling the RFID tag to operate for a longer time.

It is also an object of the present invention to remotely turn off the power of the GPS module, the sensor, and the active RFID chip included in the RFID tag in an area where operation is not required.

Furthermore, the object of the present invention is to remotely turn on the power of the GPS module, the sensor, and the active RFID chip included in the RFID tag in an area requiring operation.

FIG. 1 is an RFID configuration for managing battery power of an active sensor RFID according to the related art.
2 is a flowchart of a method of supplying power to a GPS module included in an RFID tag according to an embodiment of the present invention.
3 is a flowchart of a method of supplying power to an active RFID chip included in an RFID tag according to an embodiment of the present invention.
FIG. 4 is a flowchart of a method of supplying power to a sensor included in an RFID tag according to an embodiment of the present invention. FIG.
5 is a block diagram of an RFID tag according to an embodiment of the present invention.
6 is a block diagram of a reader in accordance with an embodiment of the present invention.
FIG. 7 is a first embodiment of an RFID tag according to an embodiment of the present invention. FIG.
8 is a second embodiment of the RFID tag according to an embodiment of the present invention.
9 is a third embodiment of the RFID tag according to an embodiment of the present invention.
10 is a fourth embodiment of the RFID tag according to an embodiment of the present invention.
11 is a flowchart of a method of supplying power to a GPS module, an active RFID chip, and a sensor included in an RFID tag according to an embodiment of the present invention.

Brief Description of the Drawings The advantages and features of the present invention, and how to achieve them, will become apparent with reference to the embodiments described in detail below with reference to the accompanying drawings. The present invention may, however, be embodied in many different forms and should not be construed as being limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art. Is provided to fully convey the scope of the invention to those skilled in the art, and the invention is only defined by the scope of the claims. It is to be understood that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings, wherein like reference numerals refer to like or corresponding components throughout the drawings, and a duplicate description thereof will be omitted .

In the following embodiments, the terms first, second, and the like are used for the purpose of distinguishing one element from another element, not the limitative meaning.

In the following examples, the singular forms "a", "an" and "the" include plural referents unless the context clearly dictates otherwise.

In the following embodiments, terms such as inclusive or possessed mean that a feature or element described in the specification is present, and does not exclude the possibility that one or more other features or components are added in advance.

If certain embodiments are otherwise feasible, the particular process sequence may be performed differently from the sequence described. For example, two processes that are described in succession may be performed substantially concurrently, and may be performed in the reverse order of the order described.

2 is a flowchart of a method of supplying power to a GPS module included in an RFID tag according to an embodiment of the present invention.

As shown in FIG. 2, a method of supplying power to a GPS module included in an RFID tag according to an embodiment of the present invention includes receiving a command requesting a power state of the GPS module from a reader (S110) A step S140 of receiving a command from the reader to turn on or off the power of the GPS module S130, a step of turning on or off the power of the GPS module S140 ).

In step S110, the RFID tag having the GSP module receives a command requesting the power status of the GPS module from the reader in step S110, the command requesting the power status of the GPS module is received through the RFID chip.

In step S120, the RFID tag having the GPS module transmits a response including the power state of the GPS module to the reader in step S120, and transmits a response including the power state of the GPS module to the reader through the RFID chip. The power state of the GPS module refers to ON / OFF information of the GPS module.

In the step of receiving a command to turn on or off the GPS module from the reader (S130), the RFID tag having the GPS module receives a command to turn on or off the GPS module from the reader.

For example, if the RFID tag transmits a response indicating that the GPS module is powered on to the reader in step S120, the reader transmits an instruction to power off the GPS module to the RFID tag in step S130. Alternatively, if the RFID tag transmits a response indicating that the GPS module is powered off to the reader in step S120, the reader transmits an instruction to power on the GPS module to the RFID tag in step S130.

For example, when a cargo tagged with a GPS module is out of a specific area, power is supplied to the GPS module of the cargo to track the position of the cargo. Here, the specific area may be a store such as a refrigerator or a freezer, or may be a selling place such as a mart or a department store. In addition, when a person wearing a bracelet, a footstep, or a handcuff with a tag including a GPS module is out of a specific area, the person can supply power to the GPS module to track the position. That is, it is possible to increase the battery life more by supplying power only to a specific condition without supplying power to the GPS module at all times. Particularly, since the RFID tag according to an embodiment of the present invention communicates with the reader through the passive RF chip, the battery may not be consumed in a normal situation at all.

The reader can send a message that the RFID tag passes the reader. If the reader receives a message that the RFID tag passes through the reader, the RFID tag can change the power of the GPS module, the active RFID chip, and the sensor.

For example, if the RFID tag is a power-on tag of a GPS module (active RFID chip, sensor, etc.), the power of the GPS module (active RFID chip, sensor, etc.) If the RFID tag is powered off, the power of the GPS module (active RFID chip, sensor, etc.) can be turned on.

In step S140 of turning on or off the GPS module, the RFID tag having the GPS module itself turns on or off the GPS module.

For example, if the RFID tag receives an instruction to power on the GPS module in step S130, the RFID tag supplies power to the GPS module. That is, the GPS module starts communication with the satellite from this time, and can calculate its position and time value.

Preferably, if the RFID tag receives an instruction to turn off the GPS module in step S130, the RFID tag cuts off power supplied to the GPS module. That is, the GPS module stops communicating with the satellite and can not calculate its position and time value from this time.

According to the method of supplying power to the GPS module included in the RFID tag according to the embodiment of the present invention, it is possible to prevent the livestock in us from leaving us, the cart in the department store to depart from the department store, When leaving the prison, the GPS module included in the RFID tag can be powered to acquire the location information and the time information. If the GPS module is in a specific area, the GPS module will not operate and if the GPS module is out of a specific area, the GPS module will operate. It is possible to track the position of an item that is outside a certain area. The position information and the time information of the RFID tag can be obtained by the GPS module operated as described above.

3 is a flowchart of a method of supplying power to an active RFID chip included in an RFID tag according to an embodiment of the present invention.

A method of supplying power to an active RFID chip included in an RFID tag according to an embodiment of the present invention includes receiving a command requesting a power state of the active RFID chip from a reader (S210), determining a power state of the active RFID chip A step S230 of receiving a command to turn on or off the power supply of the active RFID chip from the reader S230, a step S240 of powering on or off the active RFID chip ).

In step S210, the RFID tag receives a command from the reader to request the power state of the active RFID chip. An active RF chip may be included in an RFID tag.

In S220, the RFID tag transmits a response including the power state of the active RFID chip to the reader. The power state of the active RF chip may be on or off.

In S230, the RFID tag receives a command from the reader to turn on or off the active RFID chip.

For example, if the power state of the active RFID chip transmitted by the RFID tag is turned on in S220, the reader can transmit an instruction to turn off the power of the active RF chip to the RFID tag. If the power state of the active RF chip transmitted by the RFID tag is off in S220, the reader can transmit an instruction to power on the active RFID chip to the RFID tag.

In S240, the RFID tag turns on or off the active RFID chip according to a command from the reader.

Here, the RFID tag may be a passive tag that responds to an instruction from the reader. A passive tag does not require a separate battery because it operates by receiving power from the reader. The active RFID chip operates by receiving power from the built-in battery. Requires a separate battery.

The RFID tag according to an embodiment of the present invention is a passive RF system and can communicate without a separate battery. However, a GPS module, an active RFID chip, and a sensor separately attached to the RFID tag must receive power from the battery for communication .

According to an embodiment of the present invention, since the GPS module, the active RFID chip, and the sensor are not always on, the power consumption can be reduced accordingly. A GPS module or a sensor attached to the tag for monitoring the position, environment (temperature, humidity, noxious gas concentration, etc.) of the item to which the RFID tag is attached according to an embodiment of the present invention, Can be turned on.

In addition, when the RFID tag is out of the area set by the administrator, the active RFID chip attached to the tag can be turned on so that the position of the RFID tag attached article can be monitored according to an embodiment of the present invention.

The method of communication between the reader and the RFID tag utilizes radio frequency and may be ISO / IEC 18000-6C (parameter for 860MHz to 960MHz air interface communication). The active RFID chip can communicate with other devices by means of ISOIEC 18000-7 (433 MHz active air interface communication parameters).

4 is a flowchart of a method of supplying power to a sensor included in an RFID tag according to an embodiment of the present invention.

A method of supplying power to a sensor included in an RFID tag according to an embodiment of the present invention includes receiving a command requesting a power state of the sensor from a reader (S310), transmitting a response including a power state of the sensor to a reader (S320), receiving a command to turn on or off the sensor from the reader (S330), and turning on or off the sensor (S340).

In S310, the RFID tag receives a command from the reader to request the power state of the sensor. The sensor can be integrated into the RFID tag or separately. Here, the sensor senses the surrounding environment, and may be a temperature sensor, a humidity sensor, a gas sensor, or the like.

In step S320, the RFID tag transmits a response including the power state of the sensor to the reader.

In S330, the RFID tag receives a command from the reader to turn on or off the sensor.

For example, in S220, when the RFID tag responds to the reader that the sensor is powered on, the reader transmits an instruction to power off the sensor to the RFID tag. In S220, when the RFID tag responds to the reader that the power of the sensor is off, the reader transmits an instruction to power on the sensor to the RFID tag.

In S340, the RFID tag turns on or off the sensor according to a command received from the reader.

5 is a block diagram of an RFID tag according to an embodiment of the present invention.

The RFID tag 100 according to an embodiment of the present invention includes an RFID chip 110, a GPS module 120, an active RFID chip 130, a sensor 140, a power supply unit 150, a power management unit 160, And may include a battery unit 170.

The RFID tag 100 communicates with the reader via the RFID chip 110 to transmit the power status of the GPS module 120, the active RFID chip 130 and the sensor 140 to the reader, An instruction to turn on or off the active RFID chip 130, an instruction to turn the active RFID chip 130 on or off, and an instruction to turn the sensor 140 on or off.

Preferably, the RFID tag 100 receives a message from the reader through the reader through the RFID chip 110. [

Preferably, the RFID tag 100 communicates with the reader via the RFID chip 110 and transmits a response including the ID value of the RFID tag to the reader.

The RFID chip 110 receives power from a reader using a radio frequency, transmits a response, and receives a command. The RFID chip 110 does not require a separate battery.

The power management unit 160 controls the power supply unit 150 according to a command received through the RFID chip 110. The power management unit 160 may control the power supply unit 150 to supply power to the GPS module, supply power to the active RFID chip 130, or supply power to the sensor 140.

The power management unit 160 determines whether the GPS module 120 is powered on or off based on the power state of the GPS module 120, ). If the GPS module 120 passes the reader in the ON state, the power management unit 160 can turn off the GPS module 120. If the GPS module 120 passes the reader in the OFF state, the power management unit 160 can turn the GPS module 120 ON.

The power supply unit 150 may supply power to at least one of the GPS module 120, the active RFID chip 130 and the sensor 140 under the control of the power management unit 160.

The GPS module 120 included in the RFID tag can acquire positional information and time information while communicating with the satellite. The sensor 140 included in the RFID tag can sense the surrounding environment information and transmit it to the sensor node.

For example, when an RFID tag according to an embodiment of the present invention is attached to a foodstuff that should always be stored at a certain temperature or less, the sensor can be turned on when the food is out of a specific region. It is possible to monitor when the food is exposed to high temperatures. In addition, when the food is outside a certain area, the GPS module can be powered on and the location and time of the ingredients can be monitored.

Also, the RFID tag according to an embodiment of the present invention can be used for monitoring exposure of toxic gas and the like.

6 is a block diagram of a reader 200 according to an embodiment of the present invention.

The reader 200 according to an embodiment of the present invention may include an RF communication unit 210 and an instruction generation unit 220.

The RF communication unit 210 communicates with the passive tag, and can transmit a command to the passive tag or receive a response from the passive tag.

The command generating unit 220 generates an instruction to be transmitted to the RFID tag located within the recognition distance. If the response to the GPS module is received from the RFID tag, the command generation unit 220 generates a command to turn off the power of the GPS module. When the GPS module receives a response from the RFID tag, the command generation unit 220 ) Generates an instruction to power on the GPS module.

Preferably, the reader 200 can send a message to all RFID tags within the recognition distance passing through the reader.

FIG. 7 shows a first embodiment in which an RFID tag according to an embodiment of the present invention is applied.

As shown in FIG. 7, an RFID tag 300 according to an embodiment of the present invention may be attached to a person. The RFID tag 300 may receive a command from the reader 200 to power on the GPS module, the active RFID chip, or the sensor when the RFID tag 300 is out of a specific area.

When the RFID tag 300 passes through the reader 200, the reader 200 transmits a command to request the power status of the GPS module to the RFID tag 300, and receives the power status of the GPS module from the RFID tag 300 And receives a response including the response. In addition, the reader 200 transmits an instruction to turn the GPS module on or off with the RFID tag 300.

Preferably, when the reader 200 receives a power-on response to the GPS module, the reader 200 can transmit an instruction to turn off the power of the GPS module. In addition, the reader 200 can transmit a command to turn on the power of the GPS module when receiving a response that the power of the GPS module is off.

When the RFID tag 300 passes through the reader 200, the reader 200 transmits a command to request the power state of the active RFID chip to the RFID tag 300, ≪ / RTI > In addition, the reader 200 transmits an instruction to turn the active RFID chip on or off to the RFID tag 300.

Preferably, the reader 200 can transmit a command to turn off the active RFID chip when the active RFID chip is powered on. In addition, the reader 200 can transmit a command to turn on the active RFID chip when the active RFID chip is powered off.

The reader 200 receives the ID value of the RFID tag 300 using the pre-stored ID value, compares the received ID value with the previously stored ID value, and turns on the power of the GP module, the active RFID chip, Or turn it off.

The reader 200 communicates with an external device and receives an ID to turn on the GPS module, an ID to turn on the active RFID chip, and an ID to turn on the sensor. The RFID module 300 receives the GP module, An active RFID chip, a command to turn the sensor on or off.

When the RFID tag 300 passes through the reader 200, the reader 200 transmits a command to request the power state of the sensor to the RFID tag 300, And receives a response. In addition, the reader 200 transmits an instruction to the RFID tag 300 to turn the sensor on or off.

Preferably, the reader 200 can transmit a command to turn off the sensor when receiving a response that the sensor is powered on. In addition, the reader 200 can transmit a command to turn on the power of the sensor when receiving a response that the power of the sensor is off.

FIG. 8 shows a second embodiment to which an RFID tag according to an embodiment of the present invention is applied.

As shown in FIG. 8, the RFID tag according to an embodiment of the present invention may be attached to a cart such as a department store, a mart, or a supermarket. When the RFID tags 300a and 300b attached to the carts are out of a predetermined area, a command to turn on the GPS module, the active RFID chip, and the sensor from the reader 200a can be received.

According to an embodiment of the present invention, it is possible to track the position of a cart outside a certain area in real time or to sense the surrounding environment.

The RFID tag 300a receiving the command to turn on the GPS module from the reader 200a can communicate with the satellite. The RFID tag 300b receiving the command to turn off the GPS module from the reader 200a can not communicate with the satellite.

The RFID tag 300a receiving the command to turn on the active RFID chip from the reader 200a can communicate with the reader. The RFID tag 300b receiving the command to turn off the active RFID chip from the reader 200a can not communicate with the reader.

The RFID tag 300a receiving the command to turn on the sensor from the reader 200a can communicate with the sensor node. The RFID tag 300b receiving the command to turn off the sensor from the reader 200a can not communicate with the sensor node.

FIG. 9 shows a third embodiment of the RFID tag according to an embodiment of the present invention.

As shown in FIG. 9, the RFID tag according to an embodiment of the present invention can be utilized in a farm where livestock is kept. RFID tags 300c and 300d may be attached to the livestock and a reader may be installed at the boundary of a space for raising livestock to track the position of the livestock beyond the boundary.

The readers 200b and 200c transmit an instruction to the RFID tag in the communicable area and receive a response from the RFID tag. The GPS module (active RFID chip, sensor) of the RFID tag 300c is turned off and the GPS module (active RFID chip, sensor) of the RFID tag 300d is turned on according to an embodiment of the present invention.

FIG. 10 shows a fourth embodiment to which an RFID tag according to an embodiment of the present invention is applied.

As shown in FIG. 10, the RFID tag 300e according to an embodiment of the present invention can be utilized in the distribution industry as well. When the RFID tag is attached to the food to be transported and the storage warehouse of the refrigerator or the like is out of order, the sensor included in the RFID tag can be turned on and the surrounding environment (temperature, humidity, gas, etc.) can be sensed using the sensor.

11 is a flowchart of a method of supplying power to a GPS module, an active RFID chip, and a sensor included in the RFID tag according to an embodiment of the present invention.

As shown in FIG. 11, a method of supplying power to a GPS module, an active RFID chip, and a sensor included in the RFID tag includes receiving a command for requesting an ID from a reader (S410); Transmitting a response including the ID to the reader (S420); Receiving from the reader an instruction to turn on or off at least one of the GPS module, the active RFID chip, and the sensor (S430); (S440) powering on or off at least one of the GPS module, the active RFID chip, and the sensor.

In S410, an instruction for requesting an ID from the reader may be received. The ID request command can be a sel command, a Query command, or a Read command. According to the command, the RFID tag can transmit a response including the ID to the reader. The power of the GPS module, the active RFID chip, and the sensor of some tags can be turned on according to the ID value received from the RFID tag. Or the power of the GPS module, the active RFID chip and the sensor of some tags can be turned off according to the ID value.

The reader can receive the ID value of the tag to turn on the power of the GPS module, the active RFID chip, the sensor, and the ID value of the tag to turn off the power of the GPS module, the active RFID chip and the sensor, .

According to the power supply method shown in FIG. 11, the power of the GPS module, the active RFID chip, and the sensor can be managed according to the ID of the RFID tag regardless of the power state of the GSP module, the active RFID chip, and the sensor.

The power supply method according to an embodiment of the present invention can supply power to the GPS module, the sensor, and the active RF chip when the RFID tag is out of a specific area, and when the RFID tag enters a specific area, , The power to the active RF chip can be cut off. Because it communicates with the reader using passive RF chip, communication with the reader is possible even if there is no battery. When it goes out of a specific area, it checks all when entering, turning on / off power to GPS module, sensor, active RF chip . You can adjust battery consumption freely.

100: RFID tag
110: RFID chip
120: GPS module
130: Active RFID chip
140: sensor
150: Power supply
160: Power management unit
170: Battery section
200: reader
210: RF communication section
220:

Claims (11)

A power management method of an RFID tag including at least one of a GPS module, an active RF chip, and a sensor,
Transmitting a response including a power state of at least one of the GPS module, the active RF chip, and the sensor to a reader in a range in which the RFID tag can communicate;
And receiving an instruction to turn on at least one of the GPS module, the active RFID chip, and the sensor from the reader. A method of managing power of a GPS module included in an RFID tag,
Receiving a first command for requesting a power status of the GPS module from a reader in a range in which the RFID tag can communicate;
Transmitting, by the RFID tag, a response to the first command including a power state of the GPS module to the reader;
Receiving a second command to turn off the power of the GPS module so that the RFID tag stops communication with the satellite from the reader when the power state of the GPS module is ON,
Receiving a third command to turn on the power of the GPS module so that the RFID tag communicates with the satellite from the reader when the power state of the GPS module is off; And
The RFID tag having received the second command turns off the power of the GPS module included in the RFID tag or the RFID tag having received the third command turns off the power of the GPS module included in the RFID tag And controlling the power of the GPS module included in the RFID tag. 3. The method of claim 2,
Receiving a fourth command for requesting a power status of an active RFID chip included in the RFID tag from a reader in a range in which the RFID tag can communicate;
Transmitting, by the RFID tag, a response to the fourth command including the power state of the active RFID chip to the reader;
When the active state of the active RFID chip is on, the RFID tag receives a fifth command from the reader to turn off the power of the active RFID chip,
Receiving a sixth command from the reader to turn on the power of the active RF chip when the power state of the active RFID chip is off; And
The RFID tag having received the fifth command turns off the power of the active RFID chip or the RFID tag having received the sixth command turns on the power of the active RFID chip included in the RFID tag The method comprising the steps of: (a) turning on the power supply of the active RF chip included in the RFID tag. 3. The method of claim 2,
Receiving a seventh command for requesting a power status of a sensor included in the RFID tag from a reader in a range in which the RFID tag can communicate;
Transmitting, by the RFID tag, a response to the seventh instruction including the power state of the sensor to the reader;
When the power supply state of the sensor is ON, the RFID tag receives an eighth command from the reader to turn OFF the power of the sensor,
Receiving a ninth command that the RFID tag turns on the power of the sensor from the reader when the power state of the sensor is OFF; And
The RFID tag having received the eighth command turns off the power of the sensor or the RFID tag having received the ninth command turns on the power of the sensor included in the RFID tag And controlling the power of the active RF chip included in the RFID tag. In an RFID tag having a GPS module and an RFID chip,
A GPS module communicating with the satellite and exchanging data;
A GPS module that receives data from the GPS module and calculates position coordinates and time values;
An RF antenna for communicating with a reader, receiving an instruction from the reader, and transmitting a response according to the received command;
A power supply unit for selectively supplying power to the GPS module according to the control; And
A power management unit for analyzing a command received through the RFID chip and for turning on or off the power of the GPS module according to the command and for allowing the power supply unit to supply power to the GPS module; An RFID tag having a GPS module and an RF antenna. 6. The method of claim 5,
Wherein the RFID chip receives a command requesting the power status of the GPS module from the reader and transmits a response to the command including the power status of the GPS module to the reader. . The method according to claim 6,
The RFID chip receives an instruction to turn on the power of the GPS module from the reader or an instruction to turn off the power of the GPS module and to transmit the command to the power management unit,
Wherein the power management unit controls the power supply unit not to supply or supply the GPS module according to the command. 8. The method of claim 7,
And an active RFID chip receiving power from the power supply unit,
Wherein the RFID chip receives a command for requesting a power state of the active RF chip from a reader, and transmits a response to the command to the reader. 9. The method of claim 8,
The RFID chip receives an instruction to turn on the power of the active RFID chip from the reader or an instruction to turn off the power of the active RFID chip,
Wherein the power management unit controls the power supply unit to supply or not supply power to the active RFID chip according to the command. A power management method of an RFID tag including at least one of a GPS module, an active RFID chip, and a sensor,
Transmitting a response including an ID value of the RFID tag to a reader in a range in which the RFID tag can communicate;
And receiving an instruction from the RFID tag to turn on at least one of the GPS module, the active RFID chip, and the sensor from the reader. A method of managing power of a GPS module, an active RFID chip, and a sensor included in an RFID tag,
Receiving a 0th command for requesting an ID from a reader in a range in which an RFID tag can communicate;
The RFID tag transmitting a response to the tenth command including the ID to the reader;
Receiving an eleventh command that the RFID tag receives an instruction to turn on at least one of a GPS module, an active RFID chip, and a sensor from the reader according to the ID value;
The RFID tag turns off the power of at least one of the GPS module, the active RFID chip, and the sensor included in the RFID tag according to the received eleventh command or the RFID tag that receives the third command And controlling power of at least one of a GPS module, an active RFID chip, and a sensor included in the RFID tag to turn on the power of the GPS module, the active RFID chip, and the sensor included in the RFID tag.
KR1020140066517A 2014-05-30 2014-05-30 Rfid tag and method which manage power consumption of rfid tag KR20150137885A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020140066517A KR20150137885A (en) 2014-05-30 2014-05-30 Rfid tag and method which manage power consumption of rfid tag

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020140066517A KR20150137885A (en) 2014-05-30 2014-05-30 Rfid tag and method which manage power consumption of rfid tag

Publications (1)

Publication Number Publication Date
KR20150137885A true KR20150137885A (en) 2015-12-09

Family

ID=54873762

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1020140066517A KR20150137885A (en) 2014-05-30 2014-05-30 Rfid tag and method which manage power consumption of rfid tag

Country Status (1)

Country Link
KR (1) KR20150137885A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20190362304A1 (en) * 2016-05-20 2019-11-28 CORE Transport Technologies N.Z. Ltd Article tracking system
KR102200470B1 (en) 2019-08-30 2021-01-08 영남대학교 산학협력단 Liquid crystal based radio frequency identification tag
KR20210026635A (en) 2019-08-30 2021-03-10 영남대학교 산학협력단 Electromagnetic wave transmitting and receiving system capable of position tracking, identification and wireless power transmission to objects
US11137765B2 (en) * 2018-04-04 2021-10-05 Walmart Apollo, Llc Smart item storage cart system

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20190362304A1 (en) * 2016-05-20 2019-11-28 CORE Transport Technologies N.Z. Ltd Article tracking system
US11137765B2 (en) * 2018-04-04 2021-10-05 Walmart Apollo, Llc Smart item storage cart system
KR102200470B1 (en) 2019-08-30 2021-01-08 영남대학교 산학협력단 Liquid crystal based radio frequency identification tag
KR20210026635A (en) 2019-08-30 2021-03-10 영남대학교 산학협력단 Electromagnetic wave transmitting and receiving system capable of position tracking, identification and wireless power transmission to objects

Similar Documents

Publication Publication Date Title
US10318769B2 (en) Wireless tag apparatus and related methods
US10467444B2 (en) Apparatus and method for monitoring and communicating data associated with a product/item
US10445541B2 (en) Portable RFID tagged carrier for sterile implants and biological products
US10657340B2 (en) Systems and methods for improved tag position tracking
KR20060009854A (en) Multimode wireless local area network/radio frequency identification asset tag
US11416813B2 (en) Systems and methods for determining inventory using time-slotted tag communications
CN111433789B (en) System and method for operating a tag
KR20110052192A (en) Rfid system for cold chain management
KR20150137885A (en) Rfid tag and method which manage power consumption of rfid tag
US20230298448A1 (en) Radio frequency identification (rfid) tag location verification using short range communication
US11315409B2 (en) Decreasing false alarms in RFID exit portals
CN112041900A (en) System and method for tag management and theft detection
KR100821518B1 (en) Rfid tag having temperature/humidity sense and there of operation method
KR100964179B1 (en) A moving-state sensing device waking up and sending signal periodically and a usn-based facilities and assets management system adjusting the sending periods
US20220254237A1 (en) Radio frequency identification (rfid) tag location verification using image data
US10762762B2 (en) Inventory systems with sensor-driven tag read points
KR20220037763A (en) Method and device for logging data with ultra-low power using energy harvesting
KR101180810B1 (en) Real-time detection information management system and method for distribution management
JP6422397B2 (en) RFID tag and RFID system using the same

Legal Events

Date Code Title Description
A201 Request for examination
E902 Notification of reason for refusal
E902 Notification of reason for refusal
E601 Decision to refuse application