KR20100062416A - System and method for receiving and transferring of power/data by wireless using resonance coupling - Google Patents

Abstract

PURPOSE: A system for transceiving power or data wirelessly by using resonance coupling is provided to improve a transmission distance comparing with an inductive coupling type by using an electric field or a magnetic field. CONSTITUTION: A resonance coupling system(200) includes the first resonance structure(210) and the second resonance structure(220) within a near field. The first resonance structure emits at least one among data and power through a selected resonance frequency. The second resonance structure keeps a resonant state with the first resonance structure. The second resonance structure receives at least one among the data and power. A transmission resonance unit(214) keeps a resonant state with the second resonance structure. A reception resonance unit(221) keeps a resonant state with a transmitting resonance unit by the resonance frequency.

Description

System and method for wirelessly transmitting and receiving power or data using resonant coupling {SYSTEM AND METHOD FOR RECEIVING AND TRANSFERRING OF POWER / DATA BY WIRELESS USING RESONANCE COUPLING}

Embodiments of the present invention maintain a resonance state by forming a resonance coupling type dissipation field in which a first resonance structure and a second resonance structure located in a near field are electric or magnetic fields, and transmit or receive power or data in the resonance state. (near field) resonant coupling system and method.

Resonance is the fact that a vibration system receives an external force with the same frequency as its natural frequency and periodically increases its amplitude.

Resonance is a phenomenon that occurs in all vibrations, such as mechanical vibrations and electrical vibrations, of which resonance is also called resonance. In general, when the external vibration force is applied to the vibration system, if the natural frequency and the external vibration force are the same, the vibration becomes severe and the amplitude increases.

In the same principle, when a plurality of vibrating bodies separated within a certain distance vibrate at the same frequency with each other, the plurality of vibrating bodies resonate with each other, in which case the resistance between the plurality of vibrating bodies decreases.

In electrical circuits, resonators can be made using coils and capacitors. Resonators are often used in the same sense as resonators, but usually for electromagnetic waves or electric vibration. In an electric circuit, a resonator may be used as a circuit for selecting a specific frequency in a radio wave received by an antenna.

A resonance coupling system according to an embodiment of the present invention uses a predetermined resonance frequency to emit at least one of data and power, and maintains a resonance state with the first resonance structure and the data. And a second resonant structure receiving at least one of the power.

In another exemplary embodiment, a resonance field coupling method of a near field is configured to maintain a resonance state between a first resonance structure and a second resonance structure by using a selected resonance frequency, and the first resonance in the resonance state. The structure emitting at least one of data and power to the second resonant structure, and the second resonant structure receiving at least one of the emitted data and the emitted power in the resonant state. Characterized in that.

The resonance coupling system according to an embodiment of the present invention can improve a transmission distance compared to an inductive coupling method by using an electric field or a magnetic field.

The resonance coupling system according to an embodiment of the present invention may allow a plurality of devices to transmit and receive power / data wirelessly.

The resonant coupling system according to an embodiment of the present invention can efficiently receive power / data only from an authorized device.

The resonance coupling system according to an embodiment of the present invention can solve the power problem of the mobile terminal by allowing the devices located in the near field to be simultaneously charged with each other.

Resonant coupling system according to an embodiment of the present invention can reduce the production cost by eliminating the physical interface port.

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

1 is a view for explaining a resonance coupling system of the near field according to an embodiment of the present invention.

Referring to FIG. 1, a resonance coupling system 100 according to an embodiment of the present invention includes a first resonant structure 110 and a second resonant structure 120 positioned in a near field.

The first resonance structure 110 and the second resonance structure 120 maintain a resonance state by using the same resonance frequency. In this case, the resonance state is implemented as a resonant-field of resonance coupling rather than the conventional inductive coupling. Thus, using the resonant coupling system 100, the first resonant structure 110 and the second resonant structure 120 even within a few meters of near field by overcoming the problem of contact distance limitations generated in the existing inductive coupling type. Can transmit / receive data / power.

In order to transmit and receive at least one of data and power in a dissipation field in the form of resonance coupling, the first resonant structure 110 and the second resonant structure 120 first maintain a resonance state.

When the resonance state is maintained, the first resonant structure 110 emits at least one of data and power non-radiatively using the predetermined resonant frequency, and the second resonant structure 120 is At least one of the emitted data and the emitted power is received from the first resonant structure 110 using a predetermined resonance frequency.

As a result, the plurality of devices located in the near field may transmit and receive power or data wirelessly, and only the authorized device may efficiently receive power or data. In addition, by using the resonance coupling system 100 according to an embodiment of the present invention, the devices located in the near field can be solved at the same time to exchange data with each other to solve the power problem of the mobile terminal.

2 is a view for explaining a resonance coupling system of a near field according to another embodiment of the present invention.

Referring to FIG. 2, the resonant coupling system 200 includes a first resonant structure 210 and a second resonant structure 220 positioned in the near field.

First, the first resonant structure 210 includes a power processor 211, a data processor 212, a modulator 213, and a transmission resonator 214.

The power processor 211 receives the power from a predetermined power source. The predetermined power source may be interpreted as any source for providing power such as a power supply and a battery.

The data processor 212 also receives data from storage media such as a flash memory and a hard disk.

The modulator 213 generates transmission data by modulating at least one of the received power and the received data. In this case, any modulation method such as amplitude modulation, frequency modulation, phase modulation, pulse modulation, and pulse coded modulation can be used. It is possible.

The transmission resonator 214 maintains a resonance state with the second resonant structure to emit the generated transmission data.

Next, the second resonant structure 220 includes a reception resonator 221, a demodulator 222, a rectifier 223, a charger 224, and a memory 225.

The reception resonator 221 maintains a resonance state with the transmission resonator 214 by using the resonance frequency to receive the transmission data emitted from the transmission resonator 214. That is, when the reception resonator 221 is in a resonance state with the transmission resonator 214, the reception resonator 221 receives the emitted transmission data.

Accordingly, the demodulator 222 demodulates the transmission data in accordance with the modulation scheme of the modulator 213. When the transmission data is demodulated, the transmission data is processed into at least one of the power and the data.

If the power is included in the transmission data, the rectifying unit 223 converts the processed power into DC, and the charging unit 224 stores the DC converted power.

If the data is included in the transmission data, the memory unit 225 stores the processed data.

The first resonant structure 210 according to an embodiment of the present invention may further include a switching unit for selecting at least one of the input power and the input data. In this case, the transmission data emitted by the first resonant structure 210 may include only the power or only the data. Of course, the transmission data may include both the power and the data.

3 and 4 are views for explaining a resonance coupling system of a near field according to another embodiment of the present invention.

3 illustrates a first resonant structure 300 of a resonant coupling system, and FIG. 4 illustrates a second resonant structure 400 that maintains a resonance state with the first resonant structure 300 in a near field. Do it.

First, referring to FIG. 3, the first resonant structure 300 according to an embodiment of the present invention may include a power processor 310, a data processor 320, a switching unit 330, a modulator 340, and a transmitter. The resonator 350 is included.

The power processor 310 and the data processor 320 respectively correspond to the power processor 211 and the data processor 212 in FIG. 2, and a detailed description thereof will be omitted.

The switching unit 330 selects at least one of the received power and the received data.

In addition, the modulator 340 generates transmission data by modulating at least one of the received power and the received data. The modulation unit 340 according to an embodiment of the present invention determines the modulation frequency differently based on the selection of the switching unit 330, and at least one of the received power and the received data as the determined modulation frequency. Modulate to generate transmission data.

For example, the modulator 340 performs frequency modulation with the first carrier frequency and the second carrier frequency of different bands. If the switching unit 330 selects the received power to modulate the transmission data, the modulation unit 340 determines the first carrier frequency as the modulation frequency, modulates the received power, and transmits the transmission data. Can be generated as In addition, if the switching unit 330 selects the received data to modulate the transmission data, the modulator 340 determines the second carrier frequency as a modulation frequency, and modulates the received data to transmit. Can be created with data.

The modulation unit 340 according to an embodiment of the present invention may determine the modulation frequency differently using at least one capacitance change among inductance and capacitance.

If the transmission frequency is modulated with a different modulation frequency, the demodulator performs demodulation by adapting to another modulation frequency. This is described in detail in FIG. 4.

When the transmission data is generated based on the selection of the switching unit 330, the transmission resonator 350 vibrates the generated transmission data at a resonance frequency and emits the vibration data.

Next, referring to FIG. 4, the second resonant structure 400 forms a resonant field coupled to the transmission resonator 350 at the resonant frequency to maintain a resonance state. Receive the emitted transmission data.

To this end, the second resonant structure 400 includes a reception resonator 410 and a demodulator 420. First, the reception resonator 410 maintains a resonance state with the transmission resonator 350 and receives the emitted transmission data according to the maintained resonance state. In addition, the demodulator 420 determines a demodulation frequency corresponding to the modulation frequency determined by the modulator 340. At this time, the demodulator 420 may determine the demodulation frequency differently using the capacitance change of at least one of inductance and pattern, similar to the modulator 340.

As a result, the demodulator 420 demodulates the transmission data at the determined demodulation frequency and processes the transmission data into at least one of the power and the data, so that at least one of the data and the power that the first resonant structure 300 is to transmit. You can extract one.

The second resonant structure 400 according to the exemplary embodiment of the present invention includes a switching unit 430, a rectifying unit 440, a charging unit 450, and a memory unit 460.

In detail, the switching unit 430 determines the switching operation according to the output of the demodulation unit 420. For example, when power is included in the transmission data, the demodulator 420 demodulates the transmission data to output the power, and the switching unit 430 outputs the demodulator 420 to the rectifier 440. Determine the switching behavior to be input. Accordingly, the electric power is converted into DC in the rectifying unit 440 and charged in the battery in the charging unit 450. As another example, when data is included in the transmission data, the demodulator 420 demodulates the transmission data to output the data, and the switching unit 430 inputs the output of the demodulator 420 to the memory unit 460. Determine the switching behavior if possible.

The first resonant structure 300 and the second resonant structure 400 according to the exemplary embodiment of the present invention form different dissipation fields using dual resonant frequencies, respectively, and dissipate data and power into dissipation fields. Can send and receive

To this end, the switching unit 330 of the first resonant structure 300 selects at least one of the input power and the input data, and the modulator 340 is based on the selection of the switching unit 330. Thus, at least one of the received power and the received data is modulated to generate transmission data. Accordingly, the transmission resonator 350 determines the resonance frequency differently based on the selection of the switching unit 330 and emits the transmission data at the determined resonance frequency.

For example, the transmission resonator 350 may resonate with at least one of the first resonant frequency and the second resonant frequency. In this case, when the switching unit 330 selects the input power, the transmission data is emitted to the dissipation field formed at the first resonance frequency. In addition, when the switching unit 330 selects the received data, the transmission data may be emitted to the dissipation field formed at the second resonance frequency.

In this case, the transmission resonator 350 may determine the resonance frequency differently by using at least one capacitance change among inductance and pattern.

In addition, the second resonant structure 400 tunes the resonant frequency in the reception resonator 410 in order to receive the transmission data emitted using the other resonant frequency.

In detail, the reception resonance unit 410 selects a resonance frequency for reception so as to correspond to the resonance frequency determined by the transmission resonance unit. Accordingly, the reception resonator 410 maintains a resonance state with the transmission resonator 350 using the selected resonance frequency, and receives the emitted transmission data in the resonance state. The demodulator 420 demodulates the received transmission data and processes the received transmission data into at least one of the power and the data. Similar to the transmission resonator 350, the reception resonator 410 may select a resonance frequency differently using at least one capacitance change among inductance and pattern.

As a result, the resonant coupling system according to the embodiment of the present invention can improve the transmission / reception distance compared to the inductive coupling method by using the resonant coupling of the electric field or the magnetic field.

In addition, the resonant coupling system according to an embodiment of the present invention can transmit and receive data or power without physical coupling between devices, and eventually, the production cost of the portable device can be reduced due to unnecessary physical interface ports. .

In the present specification, the first resonant structure and the second resonant structure will be described separately by different block diagrams, but it is obvious that both of the first resonant structure and the second resonant structure may be included in one device. That is, one device includes both the first resonant structure and the second resonant structure, thereby enabling transmission and reception of power and data between the devices.

5 is a view for explaining a method of operating a first resonant structure according to an embodiment of the present invention.

First, the first resonant structure receives at least one of power and data (S501). In this case, the first resonant structure may receive the power from an external power supply or a power source such as a battery, or the data from a storage medium such as an external memory or a hard disk.

Next, the first resonant structure modulates at least one of the received power and the received data to generate transmission data (S502). Modulation methods for generating transmission data include any of amplitude modulation, frequency modulation, phase modulation, pulse modulation, and pulse coded modulation. Modulation schemes can also be used. However, it should be checked in which modulation scheme the second resonant structure, which is a receiving side, is modulated in the first resonant structure.

For example, when transmission data is generated after modulation in a frequency modulation scheme, the first resonant structure may modulate by differently allocating modulation frequencies corresponding to the power and the data in step 502.

Next, the first resonant structure forms a dissipation field coupled with the second resonant structure on the receiving side to maintain a resonance state (S503), and non-radioactively generates the second resonant structure in the resonant state. The transmission data is emitted (S504). In this case, if the power is input in step 501, the emitted transmission data includes the power. If the data is input, the emitted transmission data includes the data.

6 is a view for explaining a method of operation of the second resonant structure in an embodiment of the present invention.

In order to receive the transmitted transmission data, the second resonant structure forms a dissipation field coupled with the first resonant structure to maintain a resonance state (S601). When the resonance state is maintained, the second resonance structure non-radially receives the emitted transmission data (S602).

The second resonant structure demodulates the received transmission data based on a modulation scheme modulated by the first resonant structure (S603), and confirms whether demodulated data is the power or the data to charge or store data. Processing can be performed (S604).

The near-field resonant coupling method according to the present invention can be implemented in the form of program instructions that can be executed by various computer means and recorded in a computer-readable medium. The computer readable medium may include program instructions, data files, data structures, and the like, alone or in combination. Program instructions recorded on 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 media such as CD-ROMs, DVDs, and magnetic disks, such as floppy disks. Magneto-optical media, and hardware devices specifically configured to store and execute program instructions, such as ROM, RAM, flash memory, and the like. 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. The hardware device described above may be configured to operate as one or more software modules to perform the operations of the present invention, and vice versa.

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 embodiments, and those skilled in the art to which the present invention pertains various modifications and variations from such descriptions. This is possible.

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.

1 is a view for explaining a resonance coupling system of the near field according to an embodiment of the present invention.

2 is a view for explaining a resonance coupling system of a near field according to another embodiment of the present invention.

3 and 4 are views for explaining a resonance coupling system of a near field according to another embodiment of the present invention.

5 is a view for explaining a method of operating a first resonant structure according to an embodiment of the present invention.

6 is a view for explaining a method of operation of the second resonant structure in an embodiment of the present invention.

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

200: near-field resonant coupling system

210: first resonant structure

220: second resonant structure

Claims (18)

A first resonant structure emitting at least one of data and power using a predetermined resonant frequency; And A second resonant structure configured to receive at least one of the data and the power by maintaining a resonance state with the first resonant structure Resonance coupling system comprising a. The method of claim 1, The first resonant structure and the second resonant structure maintain the resonant state in the form of a coupling-resonant-field coupled using the selected resonant frequency. And the first resonant structure transmits at least one of the data and the power to the second resonant structure non-radiatively using the formed dissipation field. The method of claim 1, The first resonant structure, A power processor that receives the power from a predetermined power source; A data processor which receives the data from a predetermined storage medium; A modulator configured to generate transmission data by modulating at least one of the received power and the received data; And A transmission resonator maintaining a resonance state with the second resonant structure to emit the generated transmission data Resonance coupling system comprising a. The method of claim 3, The second resonant structure, A reception resonator configured to receive the emitted transmission data while maintaining a resonance state with the transmission resonator; A demodulator configured to demodulate the received transmission data and process the received transmission data into at least one of the power and the data Resonance coupling system comprising a. The method of claim 4, wherein A rectifier for converting the processed power into direct current; And Charging unit for storing the DC-converted power Resonance coupling system further comprises. The method of claim 4, wherein A memory unit for storing the processed data Resonance coupling system further comprises. The method of claim 3, Switching unit for selecting at least one of the input power and the received data More, And the modulator modulates the at least one based on the selection of the switch. A power processor that receives the power from a predetermined power source; A data processor which receives the data from a predetermined storage medium; A switching unit which selects at least one of the input power and the input data; A modulation unit for differently determining a modulation frequency based on the selection of the switching unit, and modulating the at least one at the determined modulation frequency to generate transmission data; And A transmission resonator configured to emit the generated transmission data using a resonance frequency Including, And a reception side to receive the emitted transmission data while maintaining a resonance state with the transmission resonator. The method of claim 8, The modulation unit resonant coupling system, characterized in that for differently determining the modulation frequency by using at least one capacitance change of inductance and capacitance (capacitance). The method of claim 8, A reception resonator configured to receive the emitted transmission data while maintaining a resonance state with the transmission resonator; And A demodulation unit for determining a demodulation frequency based on the determined modulation frequency, and demodulating the transmission data at the determined demodulation frequency; Resonance coupling system further comprises. The method of claim 10, The demodulation unit is a resonance coupling system, characterized in that for determining the demodulation frequency differently by using at least one capacitance change of inductance and pattern. A power processor that receives the power from a predetermined power source; A data processor which receives the data from a predetermined storage medium; A switching unit which selects at least one of the input power and the input data; A modulator configured to generate transmission data by modulating at least one of the received power and the received data based on the selection of the switching unit; And A transmission resonator for determining a resonance frequency differently based on the selection of the switching unit and emitting the transmission data at the determined resonance frequency. Including, And a reception side to receive the emitted transmission data while maintaining a resonance state with the transmission resonator. The method of claim 12, And the transmission resonance unit determines the resonance frequency differently using at least one capacitance change among inductance and pattern. The method of claim 12, A reception resonator for selecting a resonant frequency, maintaining a resonance state with the transmission resonator by using the selected resonant frequency, and receiving the emitted transmission data in the resonant state; And A demodulator for demodulating the received transmission data Resonance coupling system further comprises. The method of claim 14, And the reception resonance unit selects a resonance frequency differently using at least one capacitance change among inductance and pattern. Maintaining a resonance state between the first resonant structure and the second resonant structure using the predetermined resonant frequency; Emitting at least one of data and power from the first resonant structure to the second resonant structure in the resonant state; And The second resonant structure receiving at least one of the emitted data and the emitted power in the resonant state Resonant coupling method of the near field comprising a. The method of claim 16, In the resonant state, the step of the first resonant structure to emit at least one of data and power to the second resonant structure, Receiving the power from a predetermined power source; Receiving the data from a predetermined storage medium; Modulating at least one of the received power and the received data; And Emitting at least one of the modulated power and the modulated data in the resonance state Resonant coupling method of the near field comprising a. A computer-readable recording medium having recorded thereon a program for performing the method of at least one of claims 16 and 17.

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