KR101694519B1 - Sensor tag and method for providing service using the sensor tag - Google Patents

Abstract

The sensor tag receives a driving voltage generated from an RF signal received from a reader, and transmits the sensor data to the reader in response to a request from the reader. The sensor tag receives a necessary driving voltage from the tag chip, And a micro controller unit (MCU) for receiving the required drive voltage from the tag chip and transferring the measured sensor data from the at least one sensor to the tag chip.

Description

TECHNICAL FIELD [0001] The present invention relates to a sensor tag and a service providing method using the same,

The present invention relates to a sensor tag and a service providing method using the same, and more particularly, to a radio frequency identifier (RFID) sensor tag to which at least one sensor is attached.

Since the conventional sensor tag consumes a large amount of power, the sensor tag data is stored by using a separate power supply device (battery). Due to the battery of such a sensor tag, it is very difficult to put it into practical use in terms of the size and cost of the sensor tag.

In the conventional smart terminal, the sensor data itself is provided to the server through the wireless network in accordance with the RFID reader function of the NFC (Near Field Communication). Therefore, there is no additional function such as the position and time required by the user, and real-time sensor data on the site can not be verified.

In addition, in order to develop the product as an NFC sensor card, a separate sensor NFC chip was developed and realized by interlocking with the sensor. In this case, a lot of cost is required to develop a commercial product from a small quantity of sensor product system.

A problem to be solved by the present invention is to provide a sensor tag capable of storing sensor data in a sensor tag without providing a separate power supply and providing various additional information, and a method of providing a service using the sensor tag.

According to one embodiment of the present invention, a sensor tag communicating with a reader is provided. The sensor tag includes a tag chip, at least one sensor, and a micro controller unit (MCU). The tag chip receives a driving voltage generated from an RF signal received from the reader, and transmits sensor data to the reader in response to a request from the reader. The at least one sensor receives the required driving voltage from the tag chip and measures the corresponding sensor data. The MCU receives the required driving voltage from the tag chip and transmits sensor data measured from the at least one sensor to the tag chip.

The tag chip may include a data storage memory for storing sensor data measured from the at least one sensor.

The MCU may include a data storage memory for storing sensor data measured from the at least one sensor.

The tag chip and the MCU may be formed of one chip.

The sensor tag may further include an energy harvester which charges the DC voltage and supplies the DC voltage to the at least one sensor and the MCU.

The energy harvesting apparatus includes a solar cell that converts light energy from the sun into a DC voltage, a rechargeable battery that charges the DC voltage converted by the solar cell, a DC voltage charged in the rechargeable battery to the at least one sensor and the MCU And a switch for selectively connecting the rechargeable battery and the DC-DC converter.

The switch receives a control signal from the outside or connects the rechargeable battery and the DC-DC converter when the DC voltage of the rechargeable battery exceeds a threshold voltage.

The energy harvesting apparatus may further include a battery charging the DC voltage. At this time, the switch may selectively connect the DC-DC converter with the battery or the rechargeable battery.

The energy harvesting apparatus includes a rectifier for rectifying the RF signal to a DC voltage, a rechargeable battery for charging the rectified DC voltage, and a DC voltage charged in the rechargeable battery by converting the DC voltage into a driving voltage required for the at least one sensor and the MCU A DC-DC converter, and a switch for selectively connecting the rechargeable battery and the DC-DC converter. The sensor tag.

The switch receives a control signal from the outside or connects the rechargeable battery and the DC-DC converter when the DC voltage of the rechargeable battery exceeds a threshold voltage.

The energy harvesting apparatus may further include a regulator for stabilizing the rectified DC voltage and delivering the rectified DC voltage to the rechargeable battery.

The MCU may sequentially operate the at least one sensor.

The MCU may include an analog and digital interface for connection to the at least one sensor.

The MCU may download and store at least one of a program and a protocol for controlling the tag chip and the at least one sensor.

According to another embodiment of the present invention, a method of providing a service using a sensor tag in a terminal is provided. A method of providing a service includes transmitting an RF signal requesting sensor data to the sensor tag, receiving sensor data from the sensor tag operated by a driving voltage generated from the RF signal, And providing a service that combines the sensor data with location information and time information of the terminal, wherein the sensor tag includes a tag chip, an MCU, and at least one sensor, A voltage required for the MCU and at least one sensor is supplied from a driving voltage generated from the RF signal by the MCU and sensor data of the at least one sensor can be stored in the tag chip or the MCU by the MCU.

The providing step may include encrypting the sensor data with location information and time information of the terminal.

The tag chip or the MCU may download and store at least one of a program and a protocol for controlling the at least one sensor.

The providing step may include transmitting the sensor data to a wireless network according to a wireless communication protocol.

The providing step may include providing the personalized service by combining the sensor data with the location information of the terminal, the time information, and the personal information.

The sensor tag may further include an energy harvester which charges the DC voltage and supplies the DC voltage to the MCU and at least one sensor as needed.

According to the embodiment of the present invention, it is possible to activate the sensor tag by using power generation by RF or power harvesting device, data logging to the sensor tag, and to perform various applications by the mobile terminal have. In addition, various services can be realized by using the time and location information of the mobile terminal in conjunction with the sensor tag and the mobile terminal.

In addition, various application services can be realized by interfacing with a mobile terminal by attaching a sensor to an NFC card based on a near field wireless communication.

Accordingly, it is possible to provide services in various fields, which can support life-friendly services by utilizing NFC functions and wireless networks, create high added value based on user convenience / trust, It can provide an environment of life.

1 and 2 are views showing an RFID system according to an embodiment of the present invention, respectively.
FIGS. 3 and 4 are views showing signals required in the sensor tag, respectively.
5 and 6 are detailed views of the MCU shown in FIG. 1, respectively.
7 is a diagram illustrating a method of operating a tag sensor according to an embodiment of the present invention.
FIG. 8 is a view showing another example of the sensor tag shown in FIG. 1. FIG.
9 is a diagram illustrating an operation method of the sensor tag shown in FIG.
10 to 12 are views showing an example of the energy harvesting apparatus shown in Fig. 8, respectively.
13 to 15 are views showing an example of the tag chip shown in FIG. 1, respectively.
16 is a diagram illustrating a method of downloading a program in an MCU according to an embodiment of the present invention.
17 is a view showing an example of the shape of the sensor tag according to the embodiment of the present invention.
18 is a diagram illustrating an example of a service provided by a terminal using a tag sensor according to an embodiment of the present invention.
19 is a diagram showing an example of a communication protocol for the service shown in FIG.
20 and 21 are views showing another example of a service provided by a terminal using a tag sensor according to an embodiment of the present invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art can easily carry out the present invention. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. In order to clearly illustrate the present invention, parts not related to the description are omitted, and similar parts are denoted by like reference characters throughout the specification.

Throughout the specification and claims, when a section is referred to as "including " an element, it is understood that it does not exclude other elements, but may include other elements, unless specifically stated otherwise.

Now, a sensor tag and a service providing method using the same according to an embodiment of the present invention will be described in detail with reference to the drawings.

1 and 2 are views showing an RFID system according to an embodiment of the present invention, respectively.

Referring to FIGS. 1 and 2, the RFID system includes a reader 100 and a sensor tag 200.

The reader 100 transmits a radio frequency (RF) signal to the sensor tag 200 and receives an RF response signal for the RF signal from the sensor tag 200.

The sensor tag 200 receives the RF signal from the reader 100 and transmits the RF response signal including the unique identification code and sensor data (hereinafter referred to as "tag data") held by the reader 100 to the reader 100 . The sensor tag 200 generates power from an RF signal or generates power using an energy harvesting device and uses the power as a driving voltage so that the sensor tag 200 operates without an external battery.

1, the sensor tag 200 includes a tag antenna 205, a tag chip 210, a micro controller unit (MCU) 220, and a plurality of sensors 230 ₁ to 230 _n . At this time, as shown in FIG. 2, the tag chip 210 and the MCU 220 may be integrated into a single tag chip & MCU 210 'corresponding to one chip.

The tag antenna 205 receives the RF signal and transmits the RF signal to the tag chip 210.

The tag chip 210 performs wireless communication and includes an input / output (I / O) interface. The tag chip 210 communicates with the reader 100 through wireless communication and can communicate with the MCU 220 via an I / O interface.

Further, the tag chip 210 can generate a driving voltage from the received RF signal and supply it to the tag chip 210, the MCU 220, and the sensors 230 ₁ to 230 _n .

The MCU 220 includes an I / O interface and analog and digital interfaces, and is programmable. The MCU 220 can communicate with the tag chip 210 through the I / O interface and with the sensors 230 ₁ to 230 _n via the analog and digital interfaces.

The sensors 230 ₁ to 230 _n measure data at the installed positions and transmit the measured sensor data to the MCU 220 through analog and digital interfaces.

The sensors 230 ₁ to 230 _n may be one of living-environment sensors such as temperature, humidity, illuminance, UV, health check sensor, blood pressure, pulse, and diabetes.

FIGS. 3 and 4 are views showing signals required in the sensor tag, respectively.

3, the MCU 220 receives a voltage required for driving and an enable signal (enable) from the tag chip 210 and operates to receive a sensor driving signal (sensing) from the sensors 230 ₁ to 230 _n To operate the sensors 230 ₁ to 230 _n . The sensor driving signal sensing may include a voltage required for driving the sensors 230 ₁ to 230 _n .

The sensors 230 ₁ to 230 _n receiving sensor driving signals measure sensor data and transmit the measured sensor data to the MCU 220.

The MCU 220 receives the sensor data from the sensors 230 ₁ to 230 _n and stores it in a data storage memory of the tag chip 210, for example, an EEPROM (Electrically Erasable Programmable Read-Only Memory).

As shown in FIG. 4, the MCU 220 can operate by receiving only the driving voltage from the tag chip 210.

5 and 6 are detailed views of the MCU shown in FIG. 1. In FIG. 5, only _six sensors 230 ₁ to 230 ₆ are shown for convenience, and sensors 230 ₁ to 230 ₃ are analog sensors , And the remaining sensors 230 ₄ to 230 ₆ are digital sensors.

5, the MCU 220 includes an analog-to-digital converter 222, a multiplexer 224, and a digital interface 226. The analog-

The analog-to-digital converter 222 converts the analog sensor data output from the multiplexer 224 into digital sensor data and transmits the digital sensor data to the tag chip 210.

The multiplexer 224 selects one of the analog sensor data from the sensors 230 ₁ to 230 ₃ corresponding to the analog sensor according to the sensor enable signals e 1 to e ₃ and outputs the same to the analog-to-digital converter 222.

The sensor enable signals e1 to e3 are transmitted to the sensors 230 ₁ to 230 ₃ by the control program of the MCU 220 and the high level sensor enable signals e1 to e3 are sequentially transmitted to the sensors 230 ₁ to 230 ₃ ).

The sensors 230 ₁ to 230 ₃ are activated to the high level of the sensor enable signals e 1 to e ₃ , respectively, to measure the sensor data and output the measured data to the multiplexer 224.

The multiplexer 224 selects and outputs the analog sensor data of the sensor 230 ₁ in response to the high level of the sensor enable signal e ₁ and outputs the analog sensor data of the sensor 230 ₁ in response to the high level of the sensor enable signal e 2 ₂ and outputs the analog sensor data of the sensor 230 ₃ in response to the high level of the sensor enable signal e ₃ .

The digital interface 226 may include an I2C (Inter integrated circuit) 2261, a SPI (serial peripheral interface) 2262, and a UART (Universal asynchronous receiver / transmitter) 2263, can do.

Sensor (230 _{4-230 6)} corresponding to the digital sensor may be connected to one of the I2C (2261), SPI (2262 ) and UART (2263). I2C (2261), SPI (2262 ) and UART (2263) will allow the sensor (230 _{4-230 6)} to access to the tag chip (210). 5, the sensor (230 _{4-230 6)} has a sensor (230 _4-230 as shown in each of I2C (2261), may be connected to the SPI (2262), and a UART (2263), 6 ₆ may all be connected to I2C 2261. [ Sensor (230 _{4-230 6)} If both, for example, one interface, connected to the I2C (2261), it is possible to further simplify the sensor tag 200. At this time, the MCU 220 operates as a master, the sensors 230 ₄ to 230 ₆ and the tag chip 210 operate as slaves, and the sensors 230 ₄ to 230 ₆ operate to the MCU 220 Can be operated sequentially.

7 is a diagram illustrating a method of operating a tag sensor according to an embodiment of the present invention.

Referring to FIG. 7, the reader 100 broadcasts an RF signal requesting a Unified Identifier (UID) (S710).

Upon receiving the RF signal requesting the UID, the tag chip 210 of the sensor tag 200 transmits the RF response signal including the UID of the sensor tag 200 to the reader 100 (S720).

The reader 100 recognizes the UID from the RF response signal received from the sensor tag 200 and recognizes the sensor tag 200.

The tag chip 210 of the sensor tag 200 generates a driving voltage from the RF signal received from the reader 100 through the tag antenna 205 to drive the tag chip 210 and to drive the MCU 220 and the sensor 230 ₁ to the MCU 220 and the sensor 230 ₁ (S 730 and S 730 '). At this time, an enable signal may be transmitted to the MCU 220 together with the driving voltage.

When the MCU 220 receives the driving voltage from the tag chip 210, the MCU 220 starts operation and transmits a sensor driving signal sensing to the sensors 230 ₁ to 230 _n to drive the sensor 230 ₁ (S 740 ). At this time, voltages required for driving the sensors 230 ₁ to 230 _n can be supplied by the tag chip 210.

The sensor 230 ₁ measures the sensor data according to the sensor driving signal (sensing), and transmits the sensor data to the MCU 220 (S 750).

MCU (220) transmits the sensor data received from the sensor (230 _1), the sensor (230 ₁₎ to the tag chip (210) (S760).

The tag chip 210 stores the sensor data of the received sensor 230 ₁ in the data storage memory (S770).

7, only one sensor 230 ₁ is shown for the sake of convenience. However, in the case of the plurality of sensors 230 ₁ to 230 _n , the MCU 220 sequentially senses the sensor driving signals to the sensors 230 ₁ to 230 _n , . The sensors 230 ₁ to 230 _n consume a lot of power when collecting sensor data. The sensor _{(230 1 ~ 230 n) MCU} (220) , since a lot of power consumption in the operation of a maximum moment to sequentially drive the sensor (230 ₁ ~ 230 _n) a sensor (230 ₁ ~ 230 _n) does not operate at the same time The power is lowered so that no power abnormality occurs in the operation of the sensor tag 200. That is, after the MCU 220 transmits the sensor driving signal to one sensor, the sensor data received from one sensor is stored in the tag chip 210, and then the sensor driving signal is sensed by the other sensor And transmits sensor data of the sensors 230 ₁ to 230 _n to the tag chip 210 in such a manner as to transmit the sensor data. In this way, the MCU 220 can transmit a sensor driving signal sensing to only one of the sensors 230 ₁ to 230 _n .

The MCU (220) may be controlled due to receive supply a driving voltage from the tag chip 210, the sensor (230 ₁ ~ 230 _n) so that the sensor (230 ₁ ~ 230 _n) made the sensor data collected in a predetermined time.

The reader 100 transmits an RF signal requesting reading to the tag chip 210 to read the sensor data (S780).

The tag chip 210 transmits the RF response signal including the sensor data stored in the data storage memory to the reader 100 (S790).

FIG. 8 is a view showing another example of the sensor tag shown in FIG. 1. FIG.

Referring to FIG. 8, the sensor tag 200 'may further include an energy harvesting device 240 and a display unit 250.

The energy harvesting device 240 generates and charges the driving voltage. The energy harvesting apparatus 240 recognizes an external controlled or charged voltage to request power supply to the tag chip 210 and supplies a voltage charged in the harvesting apparatus 240 to the MCU 220 and the sensors 230 ₁ to 230 _n and supplies the driving voltage to the MCU 220 and the sensors 230 ₁ to 230 _n . The energy harvesting apparatus 240 may supply the driving voltage to the tag chip 210. The MCU 220 and the sensors 230 ₁ to 230 _n start driving when supplied with the driving voltage.

The energy harvester device 240 may include a power module using a solar cell or a power module using RF, for example.

The display unit 250 displays the stored tag data.

9 is a diagram illustrating an operation method of the sensor tag shown in FIG.

Referring to FIG. 9, the energy harvesting apparatus 240 requests power supply to the tag chip 210 when an external controlled or charged voltage reaches a threshold voltage (S910).

Then, the energy harvesting apparatus 240 supplies the driving voltage to the MCU 220 and the sensor 230 ₁ using the charged voltage of the energy harvesting apparatus 240 (S920, S920 ').

MCU (220) when it receives to supply a driving voltage, thereby a sensor (230 ₁₎ by passing a sensor drive signal (sensing) drives a sensor (230 ₁₎ (S930).

The sensor 230 ₁ measures the sensor data according to the sensor driving signal and transmits the sensor data to the MCU 220 (S940).

The MCU 220 transmits the sensor data received from the sensor 230 ₁ to the tag chip 210 (S950).

The tag chip 210 stores sensor data of the received sensor 230 ₁ in a data storage memory. After the sensor data of all the sensors of the sensor tag 200 are stored in the data storage memory in this manner, the tag chip 210 transmits the completion signal to the energy harvesting device 240 (S960). Then, the energy harvester device 240 stops the power supply.

In this manner, the sensor data can be logged to the tag chip 210 using the power generated by the energy harvesting device 240, rather than the RF signal according to the UID request. For example, if the sensor tag 200 is installed in a place where light is present for a predetermined period of time, data logging can be performed even without a separate battery. If the sensor tag 200 is installed for a predetermined period in a place where an RF signal is generated, You can also do data logging without the battery.

10 to 12 are views showing an example of the energy harvesting apparatus shown in Fig. 8, respectively.

The energy harvesting apparatuses shown in FIGS. 10 to 12 are for solving the problem when the voltage supplied from the tag chip 210 is different from the voltage required by the sensors 230 ₁ to 230 _n and thus can not perform smooth operation.

10, the energy harvester device 240 may include a rectifier 241, a rechargeable battery 242, a switch 243, and a DC-DC converter 244. [ The rectifier 241, the rechargeable battery 242, the switch 243, and the DC-DC converter 244 may correspond to a power module using RF.

The rectifier 241 rectifies (converts) the RF signal received through the antenna to a DC voltage and outputs it to the rechargeable battery 242. Here, the antenna is an RF antenna, and may be a tag antenna.

The rechargeable battery 242 charges the DC voltage rectified by the rectifier 241. The rechargeable battery 242 may be made of a capacitor. At this time, a regulator may be added between the rectifier 241 and the rechargeable battery 242 to stabilize the DC voltage output from the rectifier 241.

The switch 243 connects between the rechargeable battery 242 and the DC-DC converter 244 when it is turned on and transfers the DC voltage charged in the rechargeable battery 242 to the DC-DC converter 244. The switch 243 may be turned on by an external control and turned on when the voltage of the rechargeable battery 242 reaches a threshold voltage. External control may be performed by the administrator if sensor data collection (sensing) at the sensors 230 ₁ - 230 _n is required.

The DC-DC converter 244 converts the DC voltage of the rechargeable battery 242 into a DC voltage Vdd_H suitable for driving the MCU 220 and the sensors 230 ₁ to 230 _n and supplies the converted DC voltage Vdd_H MCU 220 and sensors 230 ₁ to 230 _n . The DC-DC converter 244 may supply the DC voltage Vdd_H to the tag chip 210 as occasion demands.

Referring to FIG. 11, the energy harvester device 240 'may include a solar cell 241', a rechargeable battery 242, a switch 243 and a DC-DC converter 244. The solar cell 241 ', the rechargeable battery 242, the switch 243 and the DC-DC converter 244 may correspond to a solar battery power module.

The rechargeable battery 242, the switch 243, and the DC-DC converter 244 are the same as those described in Fig.

The solar cell 241 'directly converts the light energy from the sun into electric energy, and the electric energy converted by the solar cell 241' is a direct current power. The DC power source is charged in the rechargeable battery 242 by the solar cell 241 '.

12, the energy harvester device 240 "includes a battery 245, a switch 243 'and a DC-DC converter 244. The battery 245, the switch 243' The converter 244 may correspond to a battery power module.

The battery 245 charges the DC voltage.

The switch 243 'transfers the DC voltage of the battery 245 to the DC-DC converter 244 according to external control.

The energy harvesting apparatuses 240 and 240 'of FIG. 10 or FIG. 11 can be combined with the battery power supply module. For example, the energy harvesting device 240 "may further include a solar cell 241 'and a rechargeable battery 242. The energy harvesting device 240 " also includes a rectifier 241 and a rechargeable battery 242, .

At this time, the switch 243 'transfers the DC voltage of the rechargeable battery 242 to the DC-DC converter 244 when the voltage of the external control or rechargeable battery 242 reaches the threshold voltage. Such a method makes it possible to use the battery 245 in a stable and long life.

Further, the energy harvester devices 240 and 240 'may be combined into one, or various types of energy harvester devices may be implemented.

13 to 15 are views showing an example of the tag chip shown in FIG. 1, respectively.

Referring to FIG. 13, the tag chip 210 may include an RF transceiver 212, a processor 214, and an I / O interface 216.

The RF transceiver 212 is connected to the processor 214 via a power line Vdd and GND, a receive signal line RX, a transmit signal line TX, a clock signal line CLK, and a power on reset (PoR) . Power is supplied to the RF transceiver 212 and the processor 214 via the power lines Vdd and GND. The receiving signal line RX transfers data from the processor 214 to the RF transmitting and receiving unit 212 and the transmitting signal line TX transmits the RF signal received through the tag antenna 205 to the processor 214. The RF signal is modulated into a digital signal by the RF transceiver 212 and is transmitted to the processor 214 via the transmission signal line TX and the transceiver 212 transmits the data received from the processor 214 to the RF transceiver 212 and may be transmitted to the reader 100 via the tag antenna. The PoR line PoR transfers an enable signal to the processor 214 to reset the processor 214 when power is supplied to the processor 214. The clock signal line CLK is supplied from the RF transceiver 212 to the processor 214. [ Lt; RTI ID = 0.0 > 214 < / RTI >

The processor 214 performs the RFID standard protocol. The processor 214 may configure the RFID standard protocol with the logic of the processor 214. RFID standard protocols include ISO 15693, ISO 14443, and ISO 18000-3.

Processor 214 is a hardware configured protocol. The processor 214 may include a memory 2141. Here, the memory 2141 refers to an EEPROM and stores the sensor data. 13 and 14, the tag chip 210 having the memory 2141 and the tag chip 210 'having no memory 2141 can be distinguished from each other. In the case of the tag chip 210 'having no memory 2141, the MCU 220 can store the sensor data.

Also, in terms of protocols, they can be distinguished by a tag chip having a protocol and a tag chip having no protocol. When a protocol is included in the tag chip 210, a control program suitable for the sensors 230 ₁ to 230 _n is downloaded to the tag chip 210. If there is no protocol in the tag chip 210, and it downloads the appropriate control program for the protocol (230 ₁ ~ 230 _n). If there is no protocol in the tag chip 210, the tag chip 210 can operate in conjunction with the MCU 220.

The I / O interface 216 connects the tag chip 210 and the MCU 220. The I / O interface 216 and the MCU 220 are connected through a power line (Vdd, GND), a serial data line (SDA), and a serial clock line (SCL). At this time, the MCU 220 is the master and the I / O interface 216 is the slave. The serial clock line SCL is a signal line for transmitting a synchronizing clock signal for transferring data, and is a unidirectional signal line transferred from the master to the slave. The serial data line SDA is a signal line for transferring data, and is a bidirectional signal line capable of transferring data from a master to a slave or transferring data from a slave to a master. As such I / O interface 216, I2C, SPI, UART, etc. may be used.

As such, the tag chip 210 is an independent chip and can operate in conjunction with other devices, such as the MCU 220, via the I / O interface 216.

Referring to FIG. 15, the tag chip 210 '' may include only the RF transceiver 212 '. That is, the tag chips 210 and 210' shown in FIGS. And the I / O interface 216. This tag chip 210 " corresponds to a tag chip without a protocol.

The RF transceiver 212 'may be connected to the MCU 220 through a power line Vdd, GND, a receive signal line RX, a transmit signal line TX, a clock signal line CLK, and a PoR line PoR. In this case, the RFID standard protocol can be performed by the MCU 220, and the MCU 220 can download and store the RFID standard protocol.

The functions and types of sensors to be used in the field are various. Fabricating a tag chip suitable for such a sensor is expensive. A method for improving this is to connect the tag chip 210 and the used sensors around the MCU 220 to download a program suitable for the tag chip 210 and the sensor to be used.

16 is a diagram illustrating a method of downloading a program in an MCU according to an embodiment of the present invention.

16, the MCU 220 connects the tag chip 210 and the used sensors 230 ₁ to 230 _n , and then transmits the tag chip 210 and the sensors 230 ₁ to 230 _n used therein A suitable control program for the computer 300 can be downloaded. 14, the MCU 220 can download the RFID standard protocol from the computer 300 in the case of the tag chip 210 'consisting only of the RF transceiver 212'.

Since the MCU 220 downloads the control program and RFID standard protocol suitable for the tag chip 210 and the sensors 230 ₁ to 230 _n to be used, the MCU 220 can be utilized as a programmable sensor tag.

The MCU 220 may also store sensor data. In this case, the MCU 220 may include a memory for storing data.

17 is a view showing an example of the shape of the sensor tag according to the embodiment of the present invention.

The sensor tag 200 can be manufactured in various shapes according to the application in actual field.

17, the sensor tag 200 may be formed in a geometric shape (circular, rectangular, etc.) taking into consideration the performance of the credit card, the sensor tag 200, and the sensors 230 ₁ to 230 _n . In addition, the sensor tag 200 may be provided with grooves for functions and performances in the sensor tag 200, or a hole may be formed in the sensor tag 200 to allow the sensor tag 200 to be placed at a predetermined position.

Also, the sensor tags 200 may be formed by attaching the sensors 230 ₁ to 230 _n to NFC cards based on short-range wireless communication (WiFi, Bluetooth, Zigbee, etc.).

18 is a diagram illustrating an example of a service provided by a terminal using a tag sensor according to an embodiment of the present invention.

Referring to FIG. 18, the terminal 400 may be a terminal having a reader function and a wireless communication function, for example, an NFC terminal.

The terminal 400 can turn on the reader function to acquire the sensor data from the tag sensor 200. [ In addition, the terminal 400 may receive the GPS signal from the satellite and obtain the GPS information (position, time).

Also, the terminal 400 may acquire accurate position information by combining with the sensor in the terminal 400, and may acquire position information using only the sensor in the terminal 400 when the GPS signal is weak. For example, an accurate position can be obtained by using a GPS signal with an acceleration sensor, a gyro sensor, a magnetic field sensor, an altitude sensor, or the like in the terminal 400. As a result, the terminal 400 can provide location and time information to a desired user through a wireless network.

The terminal 400 can provide the GPS information together with the sensor data acquired from the tag sensor 200 to a desired user through the wireless network. The user who is provided with the service can obtain the sensor data and the position and time information of the sensor at the same time by using the terminal 400 of the user. If only the sensor data is transmitted from the terminal 400 to the wireless network, the position and the time can not be known, so that the sensor value and the measurement time of the actual sensor position can be informed to the user with false information. At this time, using the GPS information, it is possible to provide information and precise position and time of the safe sensor.

Since the sensor tag service by the terminal 400 can know the sensor information, the position of the sensor, and the measurement time anytime and anywhere, new various services can be realized. For example, when the user using the sensor tag 200 enters the private residence, the sensor tag service receives the sensor data from the sensor tag 200 at the entrance or at a specific location through the terminal 400. [ At this time, if the sensor data is temperature, humidity, and roughness, the terminal 400 can control the indoor environment in the house to suit the optimal environment of the user from temperature, humidity, and illuminance data. For example, the terminal 400 may control the boiler, the humidifier / dehumidifier, the lighting, and the like of the house so as to achieve the optimum environment desired by the user. The indoor environment control may be performed in conjunction with the wireless communication of the terminal 400.

Also, the terminal 400 may encrypt the sensor data in order to stably process important sensor data. For example, the terminal 400 can encrypt the sensor data with time and location information by the GPS signal. The sensor data thus encrypted can be used for information security, up / modulation, and the like.

19 is a diagram showing an example of a communication protocol for the service shown in FIG.

19, the terminal 400 transmits a message M1 requesting sensor data to the sensor tag 200 according to the NFC communication protocol by turning on the reader function (S1810) And transmits a response message M2 including data to the terminal 400 (S1820).

The terminal 400 converts the received response message M2 into a message M3 conforming to the wireless communication protocol in step S1830 and transmits the GPS information and the sensor data to the wireless network in step S1840. The message (M3) transmitted to the wireless network is delivered to the necessary users.

When the terminal 400 receives a response message from the wireless network, the terminal 400 ends the wireless network interworking service.

On the other hand, if the terminal 400 can not acquire the GPS information, it can use the location and time by the wireless network.

In the NFC communication method between the sensor tag 200 and the terminal 400, commands, parameters, data size and position of the protocol can be easily realized by combining the conventional RFID protocol in order to smoothly transmit and receive the sensor data. For example, they are set to 1 byte of command, 1 byte of parameter, and 2 bytes of sensor data, respectively, and the position of each sensor data is set to temperature, humidity, ... , Illuminance, and the like. And can be realized by setting a parameter code and a command code therefor.

In the method of transmitting / receiving sensor data by wireless communication, it is possible to easily realize the size and position of commands, parameters and data having GPS information and sensor data by combining them with existing wireless protocols. The overall message structure of the protocol can be configured similar to FIG. That is, the system can be configured smoothly by additionally configuring a protocol command for transmitting sensor data.

20 and 21 are views showing another example of a service provided by a terminal using a tag sensor according to an embodiment of the present invention.

Referring to FIG. 20, a biorhythm measurement sensor for measuring the temperature, humidity, illumination and ultraviolet (UV) sensor and personal biorhythm of blood pressure, pulse, and diabetes may be attached to the sensor tag 200. As described above, various sensors can be used for the sensor tag 200 as needed.

Sensor data collected by temperature, humidity, illumination and ultraviolet (UV) sensors and biorhythm measurement sensors are transmitted to terminal 400.

The terminal 400 may provide temperature, humidity, illumination and ultraviolet (UV) data and personal biorhythm data and time and location information to a user. The primary service utilization of the sensor data can be made as an application app of the terminal 400. Application app service can provide sensor data to user through application app. The application app can be configured to provide the sensor data itself to the user.

In addition, in order to realize an intelligent service, the terminal 400 can provide an optimal customized service for personal characteristics using personal information and sensor data. The personal information may include, for example, emotion index, specialty, hobby, and the like. Personal information can be processed by a personalization algorithm and sensor data can be linked with parameters to create new services. That is, the sensor data and the personalization algorithm can be interlocked to provide an optimal personalized service.

The terminal 400 can provide a real-time customized service by adding position and time information in addition to sensor data and personalization algorithm interlocking. In addition, the terminal 400 can link the sensor data with the personalization algorithm and realize various services through the network.

21, the terminal 400 can receive sensor data through NFC communication with the sensor tag 200, and can transmit data to surrounding sensors such as a salty sensor, The sensor data can be received from RFID / USN sensor, and the collected sensor data can be transmitted to the wireless network to realize a second variety of USN service through an open semantic USN platform.

The embodiments of the present invention are not limited to the above-described apparatuses and / or methods, but may be implemented through a program for realizing functions corresponding to the configuration of the embodiment of the present invention or a recording medium on which the program is recorded, Such an embodiment can be readily implemented by those skilled in the art from the description of the embodiments described above.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, It belongs to the scope of right.

Claims (20)

A sensor tag communicating with a reader,
A tag chip that receives a driving voltage generated from an RF signal received from the reader and transmits sensor data to the reader in response to a request from the reader,
At least one sensor receiving the required driving voltage from the tag chip and measuring the sensor data, and
A micro controller unit (MCU) which receives the required driving voltage from the tag chip and sequentially operates the at least one sensor to sequentially transmit sensor data measured from the at least one sensor to the tag chip,
. The method of claim 1,
Wherein the tag chip comprises a data storage memory for storing sensor data measured from the at least one sensor. The method of claim 1,
Wherein the MCU comprises a data storage memory for storing sensor data measured from the at least one sensor. The method of claim 1,
Wherein the tag chip and the MCU are formed of a single chip. The method of claim 1,
An energy harvesting device for charging the DC voltage and supplying the DC voltage to the at least one sensor and the MCU
And a sensor tag. The method of claim 5,
The energy harvesting device
Solar cells that convert light energy from the sun into direct current voltage,
A rechargeable battery for charging the DC voltage converted by the solar cell,
A DC-DC converter for converting a DC voltage charged in the rechargeable battery into a driving voltage necessary for the at least one sensor and the MCU,
And a switch for selectively connecting the rechargeable battery and the DC-DC converter. The method of claim 6,
Wherein the switch receives a control signal from the outside or connects the rechargeable battery and the DC-DC converter when the DC voltage of the rechargeable battery exceeds a threshold voltage. The method of claim 6,
Wherein the energy harvesting apparatus further comprises a battery charging a direct current voltage,
Wherein the switch selectively connects the DC-DC converter with the battery or the rechargeable battery. The method of claim 5,
The energy harvesting device
A rectifier for rectifying the RF signal to a DC voltage,
A rechargeable battery for charging the rectified DC voltage,
A DC-DC converter for converting a DC voltage charged in the rechargeable battery into a driving voltage necessary for the at least one sensor and the MCU,
And a switch for selectively connecting the rechargeable battery and the DC-DC converter. The method of claim 9,
Wherein the switch receives a control signal from the outside or connects the rechargeable battery and the DC-DC converter when the DC voltage of the rechargeable battery exceeds a threshold voltage. The method of claim 9,
Wherein the energy harvesting device further comprises a regulator for stabilizing the rectified DC voltage and delivering the rectified DC voltage to the rechargeable battery. delete 12. The method of claim 11,
Wherein the MCU includes an analog and digital interface for coupling with the at least one sensor. The method of claim 1,
Wherein the MCU downloads and stores at least one of a program and a protocol for controlling the tag chip and the at least one sensor. A method of providing a service using a sensor tag in a terminal,
Transmitting an RF signal for requesting sensor data to the sensor tag,
Receiving sensor data from the sensor tag operating with a drive voltage generated from the RF signal,
Obtaining location information and time information of the terminal, and
Providing a service combining the sensor data with location information and time information of the terminal
/ RTI >
Wherein the sensor tag comprises a tag chip, an MCU and at least one sensor,
A voltage required by the MCU and at least one sensor is supplied from a driving voltage generated from the RF signal by the tag chip, and the at least one sensor is sequentially operated by the MCU to measure And the sensor data is sequentially stored in the tag chip or the MCU. 16. The method of claim 15,
Wherein the step of providing comprises the step of encrypting the sensor data with location information and time information of the terminal. 16. The method of claim 15,
Wherein the tag chip or the MCU downloads at least one of a program and a protocol for controlling the at least one sensor. 16. The method of claim 15,
Wherein the providing step comprises transmitting the sensor data to a wireless network according to a wireless communication protocol. 16. The method of claim 15,
Wherein the providing step includes providing the personalized service by combining the sensor data with the location information of the terminal, the time information, and the personal information. 16. The method of claim 15,
Wherein the sensor tag further comprises an energy harvesting device that charges the DC voltage and supplies the DC voltage to the MCU and at least one sensor as needed.

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