KR20130078263A - System and method for transmitting wireless power and local magnetic field communicaion - Google Patents

Abstract

PURPOSE: A local area network, a wireless power transmission system, and a method thereof are provided to simultaneously perform a local area network and wireless power transmission and perform the transmission of information and power. CONSTITUTION: A transmission unit (100) allocates power. The transmission unit encodes and modulates transmission information. The transmission unit transmits a transmission signal and power through the mutual induction property of a magnetic field to at least one coil antenna. A receiver (150) receives the transmission signal and the power to at least one second coil antenna. The receiver stores the power. The receiver restores the transmission information by demodulating and decoding the transmission signal. [Reference numerals] (105,175) Control unit; (110) Encoder; (115) Modulation unit; (125) Power supply unit; (160) Power storage unit; (165) Demodulation unit; (170) Decoder

Description

Near field communication and wireless power transmission system and method {SYSTEM AND METHOD FOR TRANSMITTING WIRELESS POWER AND LOCAL MAGNETIC FIELD COMMUNICAION}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to near field communication and wireless power transfer technology, and more particularly, to a near field communication and wireless power transfer system and method suitable for transmitting information and power by simultaneously performing near field communication and wireless power transfer.

As urbanization of modern society progresses, many landfills such as gas pipes, electric pipes, and water pipes are buried underground. Since these underground landfills are not easy to pinpoint the exact location, new building construction and repair work may cause damage to the existing underground landfill. These landfills are structures that are directly related to people's lives, and damage to landfills can cause great damage not only in terms of money and time, but also in the quality of people's lives.

Therefore, technology to accurately locate and monitor the landfills is very important. For underground landfill management, the underground sensor containing the landfill information along with the landfill is embedded. The buried underground sensor informs the reader on the ground of the landfill through communication to enable the monitoring of the landfill.

However, the existing electromagnetic communication has a bad propagation characteristics according to the medium, so communication with the sensor embedded in the ground becomes difficult, so the need for magnetic field communication is increasing. In addition, the buried sensor is difficult to replace the battery due to the characteristics of the environment, the need for wireless power transmission is also increasing.

Existing researches related to magnetic field communication have developed magnetic field communication systems at visible asset in the United States. In general, magnetic field communication for underground landfill monitoring does not require a large amount of information transmission, so only a few kbps of communication capacity is supported. In response to this demand, visible asset's products also support communication capacity of several kbps up to a distance of 15 meters. However, the visible asset magnetic field communication system is capable of transmitting information in a buried environment through magnetic field communication, but has a disadvantage in that the battery of the embedded tag must be periodically replaced.

Existing researches related to wireless power transmission include (non-patent literature 1) a wireless power transmission method using magnetic resonance of MIT. MIT Marine Solachic succeeded in experimenting with 40% of wireless power transmission efficiency at a distance of 2m using a 30cm radius coil using the resonance characteristics of the transmitting and receiving coils.

Andre Kurs, Aristeidis Karalis, Robert Moffatt, J.D.Joannopoulos, Peter Fisher, and Marin Soljacic. "Wireless Power Transfer via Strongly Coupled Magnetic Resonances", 2007, Science Vol. 317, 83,

As described above, in the magnetic field communication or the wireless power transfer method according to the prior art, only the study of the magnetic field communication or the wireless power transfer is conducted, but the wireless power transfer and the magnetic field communication are not considered at the same time.

That is, in the embedded sensor network, the wireless battery and the magnetic field communication can be simultaneously solved due to the peculiarity of the embedded environment. However, the battery sensor and the information transmission problem of the sensor cannot be solved simultaneously.

Accordingly, an embodiment of the present invention may provide a short range communication and wireless power transmission system and method capable of simultaneously performing short range communication and wireless power transmission to enable information and power transmission.

In addition, embodiments of the present invention can provide a short-range communication and a wireless power transmission system and method capable of simultaneously performing short-range communication and wireless power transmission to transmit information and power to the embedded sensor network.

The short-range communication and wireless power transmission system according to an embodiment of the present invention, after measuring the bandwidth setting and the channel, allocates power, performs encoding and modulation on transmission information, and performs at least one first coil antenna. A transmitter for transmitting a transmission signal and power using a mutual induction characteristic of a magnetic field, receiving the transmission signal and power with at least one second coil antenna, storing the power, and performing demodulation and decoding on the transmission signal It may include a receiving unit for restoring the transmission information.

The transmitter may further include an antenna controller configured to control transmission of the antenna based on channel characteristics of each of the plurality of coil antennas when the first coil antenna is plural.

The receiver may further include an antenna controller configured to control reception of an antenna based on channel characteristics of each of the plurality of coil antennas when the second coil antenna is plural.

The short-range communication and wireless power transmission system according to another embodiment of the present invention, the control unit for setting the bandwidth and channel, measuring the channel set as a pilot signal, and then allocates power based on the channel measurement result, and for the transmission information The encoder may include an encoder for performing encoding, a modulator for performing modulation on the encoded transmission information, and at least one coil antenna for simultaneously transmitting transmission information and power modulated using the mutual induction characteristic of the magnetic field.

The short range communication and power transmission system may further include a power supply unit supplying power to the controller, the encoder, the modulator, and the at least one coil antenna.

The short-range communication and wireless power transmission system according to another embodiment of the present invention, the bandwidth and the channel is set, the control unit for allocating power based on the channel measurement result after measuring the channel set as a pilot signal, and the transmission information The encoder may include an encoder that performs encoding on the encoded data, a modulator that modulates the encoded transmission information, and a dipole antenna that simultaneously transmits transmission information and power modulated through an electric field.

The short-range communication and wireless power transmission system according to another embodiment of the present invention, the bandwidth and the channel is set, the control unit for allocating power based on the channel measurement result after measuring the channel set as a pilot signal, and the transmission information An encoder performing encoding for the first transmission, a modulation unit performing modulation on encoded transmission information, a dipole antenna transmitting the transmission information or the power through an electric field, and the allocated power or the transmission information through a magnetic field. At least one magnetic field coil antenna for transmitting, and an antenna controller for controlling simultaneous transmission based on the channel characteristics of the dipole antenna and the coil antenna.

The antenna controller controls simultaneous transmission of the transmission information to the electric field dipole antenna when transmitting the allocated power through the coil antenna, and transmits the transmission information through the coil antenna. Dipole antennas can control the simultaneous transmission of the allocated power.

In the short range communication and wireless power transmission system according to another embodiment of the present invention, a magnetic field coil antenna for receiving a transmission signal containing power as a mutual induction characteristic of the magnetic field, and stores the power of the transmission signal, and stores the power; A power storage unit for driving each function based on the control unit, a demodulation unit for demodulating the transmission signal, a decoder for decoding the demodulated transmission signal, and a control unit for performing control based on the decoded transmission information. can do.

The short-range communication and wireless power transmission system according to another embodiment of the present invention, a dipole antenna for receiving a transmission signal containing power through an electric field, and stores the power of the transmission signal, and based on the power to each function The apparatus may include a power storage unit for driving, a demodulator for demodulating the transmission signal, a decoder for decoding the demodulated transmission signal, and a controller for controlling based on the decoded transmission information.

The short-range communication and wireless power transmission system according to another embodiment of the present invention, a dipole antenna for receiving the transmission signal or the power through an electric field, and at least one of receiving the allocated power or the transmission signal through a magnetic field A coil antenna, an antenna controller for controlling reception based on channel characteristics of the dipole antenna and the coil antenna, a power storage unit for storing the power and driving each function based on the power, and the transmission signal for And a demodulator for demodulating, a decoder for decoding the assembled transmission signal, and a controller for performing control based on the decoded transmission information.

In the method of short-range communication and wireless power transmission according to an embodiment of the present invention, after the bandwidth setting and the channel are measured by the transmitter, a process of allocating power to be included in the transmission information, encoding and modulating the transmission information Generating a transmission signal, simultaneously transmitting the transmission signal and power using the mutual inductive characteristic of the magnetic field to at least one first coil antenna, and receiving the transmission signal and power at least one second coil antenna at a receiver; And receiving the data, storing the power, and demodulating and decoding the transmission signal to restore the transmission information and perform a control command included in the transmission information.

In the transmitting of the transmission signal and the power, when the plurality of first coil antennas are used, transmission of the antennas may be controlled based on respective channel characteristics.

According to another embodiment of the present invention, a method for short-range communication and wireless power transmission may include setting a bandwidth and a channel, measuring a channel set as a pilot signal, and then allocating power based on the channel measurement result, and transmitting information about the transmission information. The method may include performing encoding, performing modulation on the encoded transmission information, and simultaneously transmitting transmission information and power modulated by the mutual induction characteristic of the magnetic field with at least one coil antenna.

According to another embodiment of the present invention, a method for short-range communication and wireless power transmission may include: setting a bandwidth and a channel, measuring a channel set as a pilot signal, and then allocating power based on the channel measurement result; And a process of performing modulation on the encoded transmission information, and simultaneously transmitting the transmission information and power through an electric field of the dipole antenna.

According to another embodiment of the present invention, a method for short-range communication and wireless power transmission may include: setting a bandwidth and a channel, measuring a channel set as a pilot signal, and then allocating power based on the channel measurement result; Performing the encoding of the encoded data, performing the modulation on the encoded transmission information, controlling the simultaneous transmission based on channel characteristics of the dipole antenna and the at least one coil antenna, and performing the electric field of the dipole antenna. The method may include transmitting transmission information or allocated power and transmitting the allocated power or transmission information through a magnetic field of the coil antenna.

The controlling of the simultaneous transmission may include controlling the simultaneous transmission of the transmission information to the dipole antenna when the allocated power is transmitted through the coil antenna, and transmitting the transmission information through the coil antenna. In this case, the method may include controlling the simultaneous transmission of the allocated power to the dipole antenna.

In accordance with still another aspect of the present invention, there is provided a method for short-range communication and wireless power transmission, including receiving a transmission signal including power using at least one magnetic field coil antenna using mutual induction characteristics of a magnetic field, and The method may include storing power, driving a receiver based on the power, performing demodulation on the transmission signal, and decoding the demodulated transmission signal.

In accordance with still another aspect of the present invention, there is provided a method for short-range communication and wireless power transmission, including receiving a transmission signal including power through an electric field of a dipole antenna, storing power of the transmission signal, and receiving the power based on the power. And driving a demodulator, performing a demodulation on the transmission signal, and decoding a demodulated transmission signal.

In accordance with still another aspect of the present invention, there is provided a method for short-range communication and wireless power transmission, the method including controlling reception based on channel characteristics of a dipole antenna and at least one coil antenna, and receiving the transmission signal or power through an electric field. An antenna, the coil antenna receiving the power or the transmission signal through a magnetic field, storing the power, driving each function based on the power, performing demodulation on the transmission signal, The method may include performing decoding on the demodulated transmission signal.

According to the short-range communication and wireless power transmission system and method according to an embodiment of the present invention as described above has one or more of the following effects.

According to the short-range communication and wireless power transmission system and method according to an embodiment of the present invention, it is possible to transmit a certain amount of information required in the embedded sensor network and at the same time solve the battery problem of the embedded sensor.

In addition, it can be applied to various application fields such as construction, environment, disaster prevention, and defense, and it is possible to use low power wireless communication in extreme environment, so that it can be used for constructing sensor network system for monitoring and managing underground, underwater facilities, ground condition, hazardous environment, etc. It can be effective.

1 is a block diagram showing the structure of a short-range communication and wireless power transmission system according to an embodiment of the present invention;
2 is a flowchart illustrating an operation procedure of a transmitter in a short range communication and wireless power transmission system according to an embodiment of the present invention;
3 is a flowchart illustrating an operation procedure of a receiver in a short range communication and wireless power transmission system according to an embodiment of the present invention;
4 is a diagram illustrating an information and power transmission scheme using a multiple transmit / receive magnetic field coil antenna in a short range communication and wireless power transmission system according to an embodiment of the present invention;
5 is a diagram illustrating an information and power transmission scheme using an electric field dipole antenna in a short range communication and wireless power transmission system according to an embodiment of the present invention;
6 is a diagram illustrating a wireless power transmission using a magnetic field and an information transmission method using an electric field in a short range communication and wireless power transmission system according to an embodiment of the present invention;
7 is a diagram illustrating a wireless power transmission using an electric field and an information transmission method using a magnetic field in a short range communication and wireless power transmission system according to an embodiment of the present invention;

Advantages and features of the present invention and methods for achieving them will be apparent with reference to the embodiments described below in detail with the accompanying drawings. The present invention may, however, be embodied in many different forms and should not be construed as 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. To fully disclose the scope of the invention to those skilled in the art, and the invention is only defined by the scope of the claims. Like reference numerals refer to like elements throughout.

In the following description of the present invention, a detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear. The following terms are defined in consideration of the functions in the embodiments of the present invention, which may vary depending on the intention of the user, the intention or the custom of the operator. Therefore, the definition should be based on the contents throughout this specification.

Each block of the accompanying block diagrams and combinations of steps of the flowchart may be performed by computer program instructions. These computer program instructions may be loaded into a processor of a general purpose computer, special purpose computer, or other programmable data processing apparatus so that the instructions, which may be executed by a processor of a computer or other programmable data processing apparatus, And means for performing the functions described in each step are created. These computer program instructions may be stored in a computer usable or computer readable memory that can be directed to a computer or other programmable data processing equipment to implement functionality in a particular manner, and thus the computer usable or computer readable memory. It is also possible for the instructions stored in to produce an article of manufacture containing instruction means for performing the functions described in each block or flowchart of each step of the block diagram. Computer program instructions may also be mounted on a computer or other programmable data processing equipment, such that a series of operating steps may be performed on the computer or other programmable data processing equipment to create a computer-implemented process to create a computer or other programmable data. Instructions that perform processing equipment may also provide steps for performing the functions described in each block of the block diagram and in each step of the flowchart.

Also, each block or each step may represent a module, segment, or portion of code that includes one or more executable instructions for executing the specified logical function (s). It should also be noted that in some alternative embodiments, the functions noted in the blocks or steps may occur out of order. For example, the two blocks or steps shown in succession may in fact be executed substantially concurrently or the blocks or steps may sometimes be performed in the reverse order, depending on the functionality involved.

An embodiment of the present invention is to perform short-range communication and wireless power transmission at the same time to enable the transmission of information and power.

Applications in underground sensor networks, such as real landfill management, do not require large communication capacities because they do not share much information. In other words, the necessary information can be shared even with a communication capacity of several k bps.

However, as the utilization of the embedded sensor network increases, in the WEB CAM or home network environment, a larger communication capacity is required to support a large amount of information transmission. In addition, the underground embedded sensor is not easy to replace the battery due to the nature of the buried environment.

Therefore, in the embodiment of the present invention, the magnetic field communication and the wireless power transmission may be simultaneously performed based on the short-range communication and the wireless power transmission system to enable smooth information transmission and reception through magnetic field or electric field communication.

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

1 is a block diagram showing the structure of a short-range communication and wireless power transmission system according to an embodiment of the present invention.

Referring to FIG. 1, a short range communication and wireless power transmission system may include a transmitter 100 and a receiver 150.

The transmitter 100 may include a control unit (MCU: Micro Control Unit) 105, an encoder 110, a modulator, a super capacitor 125, a transmitter coil 120, and the like. can do. The controller 105 sets the bandwidth and the channel of the frequency for information and power transmission, measures the gain for each channel by performing channel measurement using a pilot signal, and then sets the bandwidth based on the channel measurement result. May determine the power allocated to. The encoder 110 may perform coding for error detection or the like on raw data.

In addition, the modulator 115 may perform a modulation function of multiplying a carrier wave by a baseband signal coded to transmit a signal through an actual antenna, that is, the transmitting coil 120, and loading the signal at a high frequency.

The power supply unit 125 may supply power to the controller 105, the encoder 110, and the modulator 115, and may supply power allocated to the transmission coil 120, which is a magnetic field coil antenna, under the control of the controller 105. have.

가 흐르면 자기장이 생성되고, 이 자기장은 근거리에 위치한 수신 코일(155)에 새로운 자기장을 유도시켜 수신 코일(155)에도 전류가 흐를 수 있다. 이러한 자기장의 상호 유도적인 특성에 의해서 송신 코일(120)은 수신 코일(155)에 정보 및 전력을 전송할 수 있다.In response, the control unit 105 transmits a pre-allocated power to the transmission coil 120 to transmit the signal output from the modulation unit 115 to the reception unit 150, thereby providing a current including the signal in the transmission coil 120.

When is generated, a magnetic field is generated, and the magnetic field may induce a new magnetic field to the receiving coil 155 located at a short distance so that current may also flow to the receiving coil 155. Due to the mutual inductive characteristics of the magnetic field, the transmitting coil 120 may transmit information and power to the receiving coil 155.

Meanwhile, the receiver 150 includes a receiver coil 155, a power capacitor 160, a demodulation 165, a decoder 170, a control unit (MCU) 175, and the like. It may include. The receiver 150 may receive power including a signal through the transmitter 100 through a receiver coil 155 that is a magnetic field coil antenna.

The power storage unit 160 may store the power received from the receiving coil 155, and supply the stored power to the receiving unit 150 to operate the demodulator 165, the decoder 170, the controller 175, and the like. Can be. The demodulator 165 may multiply the modulated signal received by the receiving coil 155 with a carrier wave to lower the baseband signal. The decoder 170 may perform decoding to interpret the demodulated signal from the demodulator 165. In this way, the controller 175 may analyze the decoded signal from the decoder 170 and perform analysis with meaningful information (eg, a control command for the receiver 150).

A detailed operation method of the transmitter 100 and the receiver 150 will be described with reference to FIGS. 2 to 3.

2 is a flowchart illustrating an operation procedure of a transmitter in a short range communication and wireless power transmission system according to an exemplary embodiment of the present invention.

Referring to FIG. 2, the control unit 105 in the transmitter 100 sets a bandwidth and a channel according to a purpose of use in step 200, and performs channel measurement using a pilot signal in step 202 to gain gain for each channel. Will be measured. In step 204, the power is allocated to the bandwidth set based on the channel measurement result.

For example, in the case of a system for obtaining a high power transmission efficiency rather than a high information transmission capacity, the controller 105 sets a narrow bandwidth and allocates a power larger than a predetermined reference to the resonance frequency. On the contrary, in the case of a system that wants to obtain high information transmission capacity rather than high power transmission efficiency, the power allocation is performed by using a water-filling algorithm that maximizes the channel capacity under the whole energy constraint after setting the bandwidth wide. do.

Thereafter, in step 206, the encoder 110 encodes the information to be transmitted and then transmits the information to the modulator 115, and the modulator 115 modulates the transmitted information encoded in step 208 to generate a transmission signal. Done. In operation 210, the modulator 115 transmits the generated transmission signal to the transmission coil 120 to transmit the corresponding signal to the reception unit 150 through the transmission coil 120.

3 is a flowchart illustrating an operation procedure of a receiver in a short range communication and wireless power transmission system according to an exemplary embodiment of the present invention.

Referring to FIG. 3, in step 300, the receiver 150 receives a signal transmitted from the transmitter 100 of FIG. 2. In this case, the receiver coil 155 of the receiver 150 uses the mutual induction characteristic of the magnetic field. The transmission signal is received, and the power storage unit 160 receives power from the receiving coil 155 and stores it in step 302.

The modulator 165 performs demodulation on the transmission signal transmitted from the receiving coil 155 in step 304, and the decoder 170 performs analysis through decoding on the demodulated transmission signal in step 306. The decoded transmission information is transmitted to the control unit 175, and in step 308, the control unit 175 confirms the restored transmission information.

As described above, the short-range communication and wireless power transmission system through FIGS. 1 through 3 may enable simultaneous transmission of information and power using a single transmit / receive magnetic field coil antenna (eg, the transmitting coil 120 and the receiving coil 155). Can be.

Meanwhile, a multiple transmit / receive magnetic field coil antenna including at least two single transmit / receive magnetic field coil antennas of a short range communication and a wireless power transmission system may be used.

4 is a diagram illustrating an information and power transmission scheme using multiple transmission / reception magnetic field coil antennas in a short range communication and wireless power transmission system according to an embodiment of the present invention.

Referring to FIG. 4, the transmitter 400 may include one antenna unit 420, and the plurality of transmission magnetic field coil antennas 410 may be controlled by the antenna controller 420. Since the antennas of the plurality of transmission magnetic field coil antennas 410 may have different channel characteristics, the antenna controller 420 may select an optimal antenna and channel in consideration of the relationship between various antennas and channel characteristics, and control them. have.

The controller 105 in the transmitter 400 allocates power for each channel based on the control information of the antenna controller 420 and transmits information and power to obtain diversity and multiplexing gain. have.

That is, the antenna controller 420 and the controller 105 of the transmitter 400 may interoperate with each other to perform optimal antenna and channel selection, power allocation, etc. in consideration of channel characteristics and interference effects among the plurality of antennas. .

The receiver 450 may also control the plurality of receiving magnetic field coil antennas 460 through the antenna controller 470, and controls the information and power transmitted from the transmitter 400 by controlling based on different channel characteristics of each antenna. Can be reliably received.

Meanwhile, although the transmitter 400 and the receiver 450 each include a plurality of magnetic field coil antennas, only one of the transmitter 400 and the receiver 450 may include a plurality of magnetic field coil antennas. .

As such, the short range communication and wireless power transmission system illustrated in FIG. 4 relates to communication and wireless power transmission using a magnetic field. However, not only magnetic fields but also electric fields can be used for communication and wireless power transmission.

5 is a diagram illustrating an information and power transmission scheme using an electric field dipole antenna in a short-range communication and wireless power transmission system according to an embodiment of the present invention.

Referring to FIG. 5, when information and power transmission is simultaneously performed using an electric field, antennas of the transmitter 500 and the receiver 550 are configured as electric field dipole antennas 510 and 560 for transmitting and receiving an electric field instead of a coil antenna. Can be.

The transmitter 500 encodes and modulates a transmission signal, and then allocates power, thereby transmitting and transmitting information and power from the transmission electric field dipole antenna 510 to the reception electric field dipole antenna 560 of the reception unit 550 through the electric field. Can transmit

In this manner, wireless power transmission using a magnetic field and information transmission using an electric field may be simultaneously performed on one system, and conversely, wireless power transmission using an electric field and information transmission using a magnetic field may be simultaneously performed.

6 is a diagram illustrating a wireless power transmission using a magnetic field and an information transmission method using an electric field in a short-range communication and wireless power transmission system according to an embodiment of the present invention.

Referring to FIG. 6, the transmitter 600 may include at least one magnetic field coil antenna 610 and an electric field dipole antenna 620 to perform a wireless power transmission using a magnetic field and an information transmission method using an electric field. . In this case, each antenna may be controlled by considering the channel characteristics and the antenna characteristics through the antenna controller 630. Through this, the electric field dipole antenna 620 may transmit information using the electric field, and the magnetic field coil antenna 610 may perform power transmission using the magnetic field.

That is, the power allocated through the control unit 105 in the transmitting unit 600 is transmitted to the receiving unit 650 through the magnetic field coil antenna 610, and transmits the transmission signal modulated by the modulator 115 to the electric field dipole antenna 620 Information transmission can be performed.

In the receiver 650, the magnetic field coil antenna 660 and the electric field dipole antenna 670 may be configured under the control of the antenna controller 680. Through this, the magnetic field coil antenna 660 receives a magnetic field to receive power. The received power may be stored in the power storage unit 160. In addition, the electric field dipole antenna 670 may demodulate and decode the received signal by receiving the electric field from the transmitter 600.

7 is a diagram illustrating a wireless power transmission using an electric field and an information transmission method using a magnetic field in a short-range communication and wireless power transmission system according to an embodiment of the present invention.

Referring to FIG. 7, the transmitter 700 may include an electric field dipole antenna 710 and at least one magnetic field coil antenna 720 to perform a wireless power transmission using an electric field and an information transmission method using a magnetic field. In this case, each antenna may be controlled by considering the channel characteristics and the antenna characteristics through the antenna controller 730. Through this, the electric field dipole antenna 710 may perform power transmission using the electric field, and the magnetic field coil antenna 720 may perform information transmission using the magnetic field.

That is, the power allocated through the control unit 105 in the transmitter 700 transmits information to the receiver 750 through the electric field dipole antenna 710, and the transmission signal modulated by the modulator 115 is a magnetic field coil. The information is transmitted through the antenna 720 to the receiver 750.

In the receiving unit 750, the electric field dipole antenna 770 and the magnetic field coil antenna 770 may be configured under the control of the antenna controller 780, through which the electric field dipole antenna 760 receives the electric field from the transmitter 600. To receive power and store the received power in the power storage unit 160. In addition, the magnetic field coil antenna 770 may receive a magnetic field and perform demodulation and decoding on the received signal.

Meanwhile, the antenna controllers 630 and 730 in the transmitters 600 and 700 of FIGS. 6 to 7 perform antenna control to control whether power or information is transmitted through the electric field dipole antennas 620 and 710, and a magnetic field coil antenna. By controlling the information or power transmission through the (610, 720), it is possible to control the transmission of information or power for each antenna according to the state of the receiver or the operating method of the operator.

The antenna controllers 680 and 780 in the receivers 650 and 750 also check whether information transmitted through the electric field dipole antennas 670 and 760 and the magnetic field coil antennas 660 and 770 is information cognitive power. The reception control can be set differently.

As described above, the short-range communication and the wireless power transmission system and method according to an embodiment of the present invention, by performing the short-range communication and wireless power transmission at the same time to enable the transmission of information and power.

While the present invention has been described in connection with what is presently considered to be the most practical and preferred embodiment, it is to be understood that the invention is not limited to the disclosed embodiments, but is capable of various modifications within the scope of the present invention. Therefore, the scope of the present invention should not be limited to the described embodiments, but should be defined not only by the claims below, but also by those equivalent to the claims.

100: transmitter 105: controller
110: encoder 115: modulator
120, 155: magnetic field coil antenna 125: power supply
150: receiver 160: power storage unit
165: demodulator 170: decoder
175:

Claims (20)

A transmitter configured to allocate power, perform encoding and modulation on transmission information after measuring the bandwidth setting and a channel, and transmit a transmission signal and power using the mutual induction characteristic of the magnetic field to at least one first coil antenna;
Receiving unit for receiving the transmission signal and power to at least one second coil antenna to store the power, and to demodulate and decode the transmission signal to restore the transmission information
Near field communication and wireless power transfer system comprising a.
The method of claim 1,
The transmitting unit,
When the plurality of first coil antennas, the antenna control unit for controlling the transmission of the antenna based on the channel characteristics for each of the plurality of coil antennas
Short-range communication and wireless power transmission system further comprising.
The method of claim 1,
The receiver may further comprise:
Antenna control unit for controlling the reception of the antenna based on the channel characteristics for each of the plurality of coil antenna when the second coil antenna is a plurality
Short-range communication and wireless power transmission system further comprising.
A controller for setting a bandwidth and a channel, measuring a channel set as a pilot signal, and then allocating power based on the channel measurement result;
An encoder for encoding the transmission information;
A modulator for modulating the encoded transmission information;
At least one coil antenna for simultaneously transmitting power and modulated transmission information using the magnetic induction characteristics of the magnetic field
Near field communication and wireless power transfer system comprising a.
5. The method of claim 4,
The short range communication and power transmission system,
A power supply unit supplying power to the controller, the encoder, the modulator, and the at least one coil antenna
Short-range communication and wireless power transmission system further comprising.
A controller for setting a bandwidth and a channel, measuring a channel set as a pilot signal, and then allocating power based on the channel measurement result;
An encoder for encoding the transmission information;
A modulator for modulating the encoded transmission information;
Dipole antennas simultaneously transmit modulated transmit information and power through an electric field
Near field communication and wireless power transfer system comprising a.
A controller for setting a bandwidth and a channel, measuring a channel set as a pilot signal, and then allocating power based on the channel measurement result;
An encoder for encoding the transmission information;
A modulator for modulating the encoded transmission information;
A dipole antenna for transmitting the transmission information or the power through an electric field;
At least one coil antenna for transmitting the allocated power or the transmission information through a magnetic field;
An antenna controller for controlling simultaneous transmission based on channel characteristics of the dipole antenna and the coil antenna
Near field communication and wireless power transfer system comprising a.
8. The method of claim 7,
The antenna control unit,
When transmitting the allocated power through the coil antenna, the simultaneous transmission of the transmission information to the electric field dipole antenna,
When transmitting the transmission information through the coil antenna, the short-range communication and wireless power transmission system, characterized in that for controlling the simultaneous transmission of the allocated power to the electric field dipole antenna.
Coil antenna for receiving a transmission signal containing power as a mutual induction characteristic of the magnetic field,
A power storage unit for storing power of the transmission signal and driving respective functions based on the power;
A demodulator for demodulating the transmitted signal;
A decoder for decoding the demodulated transmission signal;
Control unit for performing control based on the decoded transmission information
Near field communication and wireless power transfer system comprising a.
A dipole antenna for receiving a transmission signal containing power through an electric field;
A power storage unit for storing power of the transmission signal and driving respective functions based on the power;
A demodulator for demodulating the transmitted signal;
A decoder for decoding the demodulated transmission signal;
Control unit for performing control based on the decoded transmission information
Near field communication and wireless power transfer system comprising a.
A dipole antenna for receiving the transmission signal or the power through an electric field;
At least one coil antenna for receiving the allocated power or the transmitted signal via a magnetic field;
An antenna controller for controlling reception based on channel characteristics of the dipole antenna and the coil antenna;
A power storage unit for storing the power and driving each function based on the power;
A demodulator for demodulating the transmitted signal;
A decoder for decoding the demodulated transmission signal;
Control unit for performing control based on the decoded transmission information
Near field communication and wireless power transfer system comprising a.
A process of allocating power to be included in transmission information after measuring a bandwidth setting and a channel at the transmitter;
Generating a transmission signal by performing encoding and modulation on the transmission information;
Simultaneously transmitting the transmission signal and power using mutual inductive characteristics of a magnetic field to at least one first coil antenna;
Receiving, by a receiver, the transmission signal and power with at least one first coil antenna;
Storing the power;
Restoring the transmission information by performing demodulation and decoding on the transmission signal and performing a control command included in the transmission information.
Near field communication and wireless power transmission method comprising a.
13. The method of claim 12,
The process of transmitting the transmission signal and power,
And a plurality of the first coil antennas to control the transmission of the antennas based on respective channel characteristics.
Setting a bandwidth and a channel, measuring a channel set as a pilot signal, and allocating power based on the channel measurement result;
Encoding the transmission information;
Performing modulation on the encoded transmission information;
Simultaneously transmitting transmission information and power modulated by the mutual induction characteristic of the magnetic field with at least one first coil antenna
Near field communication and wireless power transmission method comprising a.
Setting a bandwidth and a channel, measuring a channel set as a pilot signal, and allocating power based on the channel measurement result;
Encoding the transmission information;
Performing modulation on the encoded transmission information;
Simultaneously transmitting the transmission information and power through the electric field of the first dipole antenna
Near field communication and wireless power transmission method comprising a.
Setting a bandwidth and a channel, measuring a channel set as a pilot signal, and allocating power based on the channel measurement result;
Encoding the transmission information;
Performing modulation on the encoded transmission information;
Controlling simultaneous transmission based on channel characteristics of the dipole antenna and at least one coil antenna;
Transmitting the transmission information or the allocated power through an electric field of the dipole antenna;
Transmitting the allocated power or transmission information through a magnetic field of the coil antenna
Near field communication and wireless power transmission method comprising a.
17. The method of claim 16,
The process of controlling the simultaneous transmission,
Controlling the simultaneous transmission of the transmission information to the dipole antenna when the allocated power is transmitted through the coil antenna;
Controlling simultaneous transmission of the allocated power to the dipole antenna when the transmission information is transmitted through the coil antenna.
Local area communication and wireless power transmission method comprising a.
Receiving a transmission signal including power by using mutual induction characteristics of a magnetic field through at least one coil antenna;
Storing power of the transmission signal and driving the receiver based on the power;
Performing demodulation on the transmission signal;
Process of decoding the demodulated transmission signal
Near field communication and wireless power transmission method comprising a.
Receiving a transmission signal including power through an electric field of the dipole antenna,
Storing power of the transmission signal and driving the receiver based on the power;
Performing demodulation on the transmission signal;
Performing decoding on the demodulated transmission signal
Near field communication and wireless power transmission method comprising a.
Controlling reception based on channel characteristics of the dipole antenna and at least one coil antenna;
The dipole antenna for receiving a transmission signal or power through an electric field;
The coil antenna for receiving the power or the transmission signal through a magnetic field;
Storing the power and driving each function based on the power;
Performing demodulation on the transmission signal;
Process of decoding the demodulated transmission signal
Near field communication and wireless power transmission method comprising a.

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