KR101706574B1 - Method for providing information to adjust position of wireless power transmission terminal - Google Patents

Method for providing information to adjust position of wireless power transmission terminal Download PDF

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KR101706574B1
KR101706574B1 KR1020150090941A KR20150090941A KR101706574B1 KR 101706574 B1 KR101706574 B1 KR 101706574B1 KR 1020150090941 A KR1020150090941 A KR 1020150090941A KR 20150090941 A KR20150090941 A KR 20150090941A KR 101706574 B1 KR101706574 B1 KR 101706574B1
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sensing terminal
map
measurement
measurement value
terminal
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KR20170001239A (en
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김승호
이재용
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주식회사 인프라웨어
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    • H02J17/00—
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/68—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient
    • A61B5/6801—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient specially adapted to be attached to or worn on the body surface
    • A61B5/683—Means for maintaining contact with the body
    • A61B5/6832—Means for maintaining contact with the body using adhesives
    • A61B5/6833—Adhesive patches
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
    • G06Q50/00—Information and communication technology [ICT] specially adapted for implementation of business processes of specific business sectors, e.g. utilities or tourism
    • G06Q50/10—Services
    • G06Q50/22—Social work or social welfare, e.g. community support activities or counselling services

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Abstract

A method for providing information for position adjustment of a wireless power transmission terminal, the method comprising: transmitting power from a plurality of points to a sensing terminal through a communication module; Receiving a measurement of at least one of voltage, current, or power supplied from a sensing terminal at a plurality of points to a sensing terminal in real time; generating a map indicative of a magnitude relationship between measurements based on the measurement; and And outputting notification information so that the user can sense the size of the measured value after the map is generated based on the map. The present invention can detect the magnitude of the power transmitted to the sensing terminal by the user By outputting the notification information so that the transmission efficiency of the power transmitted to the sensing terminal can be improved. A.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a method of providing information for adjusting a position of a wireless power transmission terminal,

BACKGROUND OF THE INVENTION 1. Field of the Invention [0002] The present invention relates to a method for providing information for adjusting a position of a wireless power transmission terminal, and more particularly, to an information providing method for outputting notification information capable of sensing the magnitude of power transmitted wirelessly.

With the development of technology related to mobile terminals and the interest of users in health care, there is an increasing demand for health care services using mobile terminals. Related to the health care service, hardware for acquiring biometric information of a user, for example, a medical diagnosis patch capable of sensing a user's biometric information attached to a user's body has been developed and used. Also, in order to eliminate the inconvenience of replacing or charging the battery of the medical diagnosis patch, interest in a medical diagnosis patch capable of being supplied with power wirelessly from a mobile terminal is being amplified.

Conventionally, when a medical diagnosis patch is attached to a user's body, it is difficult to locate a mobile terminal that supplies power at a point where the medical diagnosis patch is hidden by the clothes and the user can maximize the wireless power transmission efficiency and communication efficiency . Further, there is a problem that it is difficult to maintain the mobile terminal at the point where the mobile terminal is located for a long period of time even if the mobile terminal is located by finding a point at which the wireless power transmission efficiency and communication efficiency can be maximized.

Accordingly, there is a need to develop a method and apparatus for providing information that can guide the wireless power transmission efficiency and communication efficiency between a medical diagnosis patch and a mobile terminal.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a wireless power transmission terminal capable of inducing improvement of transmission efficiency of power transmitted to a sensing terminal by outputting notification information so that a user can sense the magnitude of power transmitted to a sensing terminal And a method for providing information for position adjustment.

Another problem to be solved by the present invention is to create a map by matching the measurement values of the supplied power and the position information of the received points so that the user can move the wireless power transmission terminal to a position where the power transmission efficiency is maximized So that the user can visually guide the user interface.

The problems of the present invention are not limited to the above-mentioned problems, and other problems not mentioned can be clearly understood by those skilled in the art from the following description.

According to an aspect of the present invention, there is provided a method of providing information for position adjustment of a wireless power transmission terminal, the method comprising: transmitting power from a plurality of points to a sensing terminal through a communication module; Current or power supplied from the sensing terminal to the sensing terminal in real time, generating a map indicative of a magnitude relationship between the measurements based on the measurement, and based on the map, And outputting the notification information so that the user can detect the size of the received measurement value.

According to another aspect of the present invention, the transmitting step is a step of transmitting power by transmitting an electromagnetic wave to the sensing terminal through the communication module.

According to another aspect of the present invention, the transmitting step is a step of transmitting power to the sensing terminal through the communication module in an NFC scheme.

According to still another aspect of the present invention, the transmitting step and the receiving step are performed simultaneously.

According to still another aspect of the present invention, there is provided a method of measuring a position, comprising: acquiring position information of a point at which a measured value is received; and matching and storing a measured value and position information, And generating a map indicating a relationship between the size and the location information of the map.

According to another aspect of the present invention, the outputting step is a step of outputting a graph showing a relation between a current position and a position at which a measured value is maximum through a display unit based on a map.

According to another aspect of the present invention, the graph is characterized in that the position where the magnitude of the measurement is the maximum is displayed at the center of the graph.

According to still another aspect of the present invention, a graph is configured to display a direction for moving a measurement value from a current position to a position where a measurement value is at a maximum.

According to another aspect of the present invention, the announcement information is an acoustic sound capable of sensing a magnitude of a received measurement value after a map is generated.

According to another aspect of the present invention, the announcement information is a vibration that can detect the magnitude of the received measurement value after the map is generated.

According to an aspect of the present invention, there is provided a wireless power transmission terminal for transmitting power from a plurality of points to a sensing terminal, A communication module for receiving a measurement for at least one of a current, a current or a power, a generating module for generating a map indicating a magnitude relationship between measurements based on the measurement, And an output module for outputting the notification information so that the notification information can be detected.

According to an aspect of the present invention, there is provided a computer-readable recording medium for transmitting power from a plurality of points to a sensing terminal through a communication module, Current or power supplied to the sensor, generating a map indicative of a magnitude relationship between measurements based on the measurement, and based on the map, calculating a magnitude of the received measurement after the map is generated And a set of commands for outputting the notification information so that the user can detect it.

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

The present invention has the effect of inducing the improvement of the transmission efficiency of the power transmitted to the sensing terminal by outputting the notification information so that the user can sense the magnitude of the power transmitted to the sensing terminal.

The present invention generates a map by matching the measured value of the supplied power and the position information of the received point to thereby allow the user to visually guide the wireless power transmission terminal to a position where the power transmission efficiency is maximized Can be provided.

The effects according to the present invention are not limited by the contents exemplified above, and more various effects are included in the specification.

1 is a schematic configuration diagram of a wireless power transmission terminal according to an embodiment of the present invention.
2 is a flowchart illustrating an information providing method for location adjustment of a wireless power transmission terminal according to an embodiment of the present invention.
3A and 3G illustrate an exemplary embodiment implemented according to an information providing method for position adjustment of a wireless power transmission terminal according to some embodiments of the present invention.

BRIEF DESCRIPTION OF THE DRAWINGS The advantages and features of the present invention, and the manner of achieving them, will be apparent from and elucidated with reference to the embodiments described hereinafter in conjunction with the accompanying drawings. The present invention may, however, be embodied in many different forms and should not be construed as being limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art. Is provided to fully convey the scope of the invention to those skilled in the art, and the invention is only defined by the scope of the claims.

Although the first, second, etc. are used to describe various components, it goes without saying that these components are not limited by these terms. These terms are used only to distinguish one component from another. Therefore, it goes without saying that the first component mentioned below may be the second component within the technical scope of the present invention.

Like reference numerals refer to like elements throughout the specification.

The sizes and thicknesses of the individual components shown in the figures are shown for convenience of explanation and the present invention is not necessarily limited to the size and thickness of the components shown.

It is to be understood that each of the features of the various embodiments of the present invention may be combined or combined with each other partially or entirely and technically various interlocking and driving is possible as will be appreciated by those skilled in the art, It may be possible to cooperate with each other in association.

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

1 is a schematic configuration diagram of a wireless power transmission terminal according to an embodiment of the present invention. Referring to FIG. 1, a wireless power transmission terminal 100 includes at least a communication module 110, a generation module 120, and an output module 130.

The wireless power transmission terminal 100 may be a mobile terminal or a tablet " PC " including a processor and a memory as a portable computing device capable of short-range wireless communication, or a module mounted on the terminal described above, Or may be a dedicated terminal for supplying the data.

Here, the sensing terminal 200 may be a patch-type medical diagnostic device capable of attaching to the body of the user 10 to sense a biological signal. The sensing terminal 200 can measure the magnitude of the power, voltage, or current supplied by the wireless power transmission terminal 100 and can transmit the biometric data read from the specific living tissue of the user 10. [ The sensing terminal 200 may include one or more sensors for sensing various biometric data.

The communication module 110 transmits electric power to the sensing terminal 200 at a plurality of points and transmits at least one of voltage, current, and electric power supplied from the sensing terminal 200 to the sensing terminal 200 at a plurality of points Lt; / RTI > The communication module 110 may be a non-contact type short-range wireless communication module such as a near field communication (NFC) module capable of supplying power to the sensing terminal 200 and transmitting and receiving signals and data.

Generation module 120 generates a map that represents the magnitude relationship between the measurements based on the measurements. The generation module 120 may be a processor capable of generating data by performing an operation on a measurement.

The output module 130 outputs notification information based on the map so that the user 10 can detect the size of the measured value after the map is generated. The output module 130 may be a vibration motor, a speaker, an LED lamp, or a display unit capable of outputting vibration, sound, light, or a screen that the user 10 can perceive using a sensory organs.

1, the communication module 110, the generation module 120, and the output module 130 are shown as separate components in the wireless power transmission device 100 for the sake of identification. However, May be implemented in one integrated form or in a separate form according to the embodiment.

2 is a flowchart illustrating an information providing method for location adjustment of a wireless power transmission terminal according to an embodiment of the present invention. For convenience of explanation, FIG. 1 will be described together.

The method for providing information for adjusting the position of a wireless power transmission terminal according to an embodiment of the present invention is started by the communication module 110 transmitting power to the sensing terminal 200 at a plurality of points (S210).

The communication module 110 can wirelessly transmit power to the sensing terminal 200 by transmitting an electromagnetic wave including a power component. For example, the communication module 110 may transmit power in an NFC manner. The power component included in the electromagnetic wave transmitted by the communication module 110 may be an electromagnetic file that the sensing terminal 200 can generate power by using the electromagnetic induction phenomenon. When the wireless power transmission terminal 100 is moved by the user 10, the communication module 110 can transmit power to the sensing terminal 200 at a plurality of points.

Since the electric power is generated in the sensing terminal 200 by the electromagnetic wave transmitted from the communication module 110, the magnitude of the electric power generated by the sensing terminal 200 is equal to that between the communication module 110 and the sensing terminal 200 It is affected by the distance, and the power decreases as the distance increases. Therefore, since the magnitude of the power generated by the sensing terminal 200 can be changed by the motion of the communication module 110 or the sensing terminal 200, the magnitude of the power generated by the sensing terminal 200 is It may change according to the flow. That is, the magnitude of the power generated by the sensing terminal 200 may vary according to the distance between the point where the communication module 110 transmits power and the sensing terminal 200. When the wireless power transmission terminal 100 and the sensing terminal 200 are disposed so that the electromagnetic wave transmitted from the communication module 110 passes through the central portion of the coil for power generation of the sensing terminal 200, .

Next, the communication module 110 receives a measurement of at least one of voltage, current, and power supplied from the sensing terminal 200 to the sensing terminal 200 at a plurality of points (S220).

The sensing terminal 200 can measure the power supplied through the communication module 110. [ The sensing terminal 200 may measure the magnitude of the supplied voltage or current instead of measuring the magnitude of the supplied power. The communication module 110 may receive a measurement of power, voltage, or current supplied from the sensing terminal 200. The communication module 110 can receive the above-described data by the NFC method. A measurement value of the power, voltage or current supplied to the sensing terminal 200 is supplied to the sensing terminal 200 from the sensing terminal 200 and the communication module 110 when power is wirelessly supplied to the sensing terminal 200 by the communication module 110. [ You can have a size that is inversely proportional to distance.

The communication module 110 can receive power, voltage, or current measurement values supplied from the sensing terminal 200 in real time immediately after power is supplied to the sensing terminal 200 at each of a plurality of points. When the communication module 110 is an NFC module, the data transmission rate of the communication module 110 is lower than the data transmission rate of the communication module 110 because the data transmission rate of the NFC is 106 kbit / s, 212 kbit / s or 424 kbit / It is possible to immediately receive measurement values of voltage, current or electric power from the sensing terminal 200 after power is supplied to the terminal 200. [

According to one embodiment of the present invention, transmitting (S210) and receiving (S220) may be performed simultaneously. Specifically, the communication module 110 can transmit the power to the sensing terminal 200 and receive the measurement value from the sensing terminal 200, and the communication module 110 transmits the power and receives the measurement values. Can be repeatedly performed at a point of < RTI ID = 0.0 > For example, after the communication module 110 transmits power to the sensing terminal 200 at the first point and receives the measurement value from the sensing terminal 200, the communication module 110 transmits power to the sensing terminal 200 at the second point The measurement terminal 200 may receive the measurement value. The communication module 110 may continuously transmit power to the sensing terminal 200 and receive measurements from the sensing terminal 200 while moving from the first point to the second point.

Next, the generation module 120 generates a map indicating a magnitude relation between measured values based on the measured values (S230). The generating module 120 may extract a maximum value and a minimum value of the measured values from the received measured values, and generate a map based on the maximum value and the minimum value. For example, the generating module 120 may generate a map such that the magnitude relationship between measurements is displayed by one-dimensional arraying of measurements.

According to another embodiment of the present invention, the generating module 120 may generate a map indicating the relationship between the magnitude of the measurement and the positional information based on the measured value and the positional information.

The wireless power transmission terminal 100 according to another embodiment of the present invention acquires position information of a point at which the wireless power transmission terminal 100 is placed when a measurement value is received when a measurement is received from the sensing terminal 200. [ The position information may be generated through a sensor capable of sensing the position of the wireless power transmission terminal 100 included in the wireless power transmission terminal 100 and may be generated using an acceleration obtained through the acceleration sensor of the wireless power transmission terminal 100 Information and the time information stored in the wireless power transmission terminal 100. [ The location information may include plane coordinate information or spatial coordinate information of a point where the wireless power transmission terminal 100 is located.

The wireless power transmission terminal 100 stores and stores the received measurement values and positional information on the points at which the measured values are received. The mutually matched measurement values and position information can be stored in the memory of the wireless power transmission terminal 100.

The generation module 120 generates a map indicating the relationship between the magnitude of the measurement and the positional information based on the stored measurement value and the positional information. The map may indicate the size of the measured value according to the position of the wireless power transmission terminal 100. For example, the generating module 120 may generate a map such that the relationship between the position of the wireless power transmission terminal 100 and the magnitude of the measurement appears by arranging the measurements two-dimensionally or three-dimensionally based on the positional information .

Next, based on the map, the output module 130 outputs notification information so that the user 10 can detect the size of the measurement value received after the map is generated (S240).

For example, the output module 130 may output notification information when the size of the received measurement value approaches the maximum value of the measurement value based on the one-dimensional map. The output module 130 may output notification information such as sound, vibration, or light when the size of the received measurement value is, for example, 90% or more of the maximum value.

As another example, the output module 130 may output a graph indicating the relationship between the current position of the wireless power transmission terminal 100 and the position where the maximum value of the measured value is received based on the two-dimensional or three-dimensional map. The graph may be configured such that the position where the maximum value of the measured value is received is displayed at the center of the graph. The graph may be configured such that a direction for moving the maximum value of the measurement from the current position to the received position is displayed. The graph showing the relationship between the position where the power transmission efficiency is highest and the current position of the wireless power transmission terminal 100 is output so that the user 10 can view the graph and determine the power transmission efficiency of the wireless power transmission terminal 100 The advantageous effect of the present invention is obtained.

The notification information is information that the user 10 can perceive through the sensory organ. The notification information may be sound, vibration or light capable of detecting the magnitude of the measurement, or may be a document or an image including a graph or the like.

As described above, by outputting the graph so that the user 10 can sense the magnitude of the power transmitted to the sensing terminal 200 through the output module 130, the transmission efficiency of the power transmitted to the sensing terminal 200 The advantageous effect of the present invention is obtained.

3A and 3G illustrate an exemplary embodiment implemented according to an information providing method for position adjustment of a wireless power transmission terminal according to some embodiments of the present invention.

Referring to FIG. 3A, the sensing terminal 200 is attached to the body of the user 10. 3A and 3B, the sensing terminal 200 is shown to be viewed from the outside for convenience of explanation. However, when the user 10 wears the garment, the sensing terminal 200 can not be recognized from the outside.

Referring to FIG. 3B, the wireless power transmission terminal 100 supplies power to the sensing terminal 200 and receives a measurement of the power supplied from the sensing terminal 200. The wireless power transmission terminal 100 receives power at a plurality of points while receiving measurements. The wireless power transmission terminal 100 may generate a map based on stored measurement values and position information after matching the received measurement values and position information of the received points with each other.

Referring to FIG. 3C, the wireless power transmission terminal 100 outputs a graph indicating a relationship between a current location of the wireless power transmission terminal 100 and a point at which transmission efficiency of power supplied to the sensing terminal 200 is maximized . The wireless power transmission terminal 100 includes a reference point 131 indicating a point where transmission efficiency of the power is maximized through the output module 130, a current position point 132 indicating a current position of the wireless power transmission terminal 100, And outputs a graph including the shipbuilding 133. The user 10 can move the wireless power transmission terminal 100 to a point where the transmission efficiency of the power is maximized by viewing the reference point 131 and the current location point 132. [

Referring to FIG. 3D, the output module 130 outputs a graph in which the current position point 132 'is indicated by an arrow pointing to the reference point 131, unlike the case of FIG. 3C. The present position point 132 'is displayed in the form of an arrow pointing to the reference point 131 so that the user 10 can see the current position point 132' and transmit the wireless power transmission terminal 100 at a point where the transmission efficiency of the power is maximized As shown in Fig.

Referring to FIG. 3E, the output module 130 outputs a graph including the current position point 135 and the axis 134, unlike the case of FIGS. 3C and 3D. When the map is generated based only on the measured values without the location information of the wireless power transmission terminal 100, the output module 130 may be configured to display the relationship between the maximum and minimum values of the measurements and the current location of the wireless power transmission terminal 100 A graph showing the current position point 135 on the axis 134 can be output.

Referring to FIG. 3F, when the output module 130 outputs the graph shown in FIG. 3C, the output module 130 reflects the movement of the wireless power transmission terminal 100 to move the current position point 132 Output. The output module 130 outputs a graph such that the reference point 131 and the current point 132 overlap with each other when the wireless power transmission terminal 100 is located at a position where the transmission efficiency of the power is maximized.

3E, when the output module 130 outputs the graph shown in FIG. 3E, the output module 130 reflects the magnitude of the measured value received at the wireless power transmission terminal 100, ) And outputs it. The output module 130 outputs a graph such that the current position point 135 is displayed at a position that represents the maximum value on the axis 134. In the case where the transmission power efficiency of the wireless power transmission terminal 100 is maximized, do.

In this specification, each block or each step may represent a part of a module, segment or 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 mentioned in the blocks or steps may occur out of order. For example, two blocks or steps shown in succession may in fact be performed substantially concurrently, or the blocks or steps may sometimes be performed in reverse order according to the corresponding function.

The steps of a method or algorithm described in connection with the embodiments disclosed herein may be embodied directly in hardware, in a software module executed by a processor, or in a combination of the two. The software module may reside in a RAM memory, a flash memory, a ROM memory, an EPROM memory, an EEPROM memory, a register, a hard disk, a removable disk, a CD-ROM or any other form of storage medium known in the art. An exemplary storage medium is coupled to the processor, which is capable of reading information from, and writing information to, the storage medium. Alternatively, the storage medium may be integral with the processor. The processor and the storage medium may reside within an application specific integrated circuit (ASIC). The ASIC may reside within the user terminal. Alternatively, the processor and the storage medium may reside as discrete components in a user terminal.

Although the embodiments of the present invention have been described in detail with reference to the accompanying drawings, it is to be understood that the present invention is not limited to those embodiments and various changes and modifications may be made without departing from the scope of the present invention. . Therefore, the embodiments disclosed in the present invention are intended to illustrate rather than limit the scope of the present invention, and the scope of the technical idea of the present invention is not limited by these embodiments. Therefore, it should be understood that the above-described embodiments are illustrative in all aspects and not restrictive. The scope of protection of the present invention should be construed according to the following claims, and all technical ideas within the scope of equivalents should be construed as falling within the scope of the present invention.

10 users
100 wireless power transmission terminal
110 communication module
120 generating module
130 output module
200 sensing terminal
131 reference point
132 Current position point
132 'Current position point
133 Booth line
134 Current position point
135 axes

Claims (12)

Transmitting power to a sensing terminal through a communication module at a plurality of points;
Receiving a measurement of at least one of voltage, current or power supplied from the sensing terminal to the sensing terminal in real time at the plurality of points;
Obtaining positional information of a point at which the measurement value is received;
Matching and storing the measurement value and the position information;
Generating a map indicating a relationship between the magnitude of the measurement and the positional information based on the measurement value and the positional information; And
And outputting the notification information so that the user can detect the size of the measured value after the map is generated based on the map. Way. The method according to claim 1,
Wherein the transmitting comprises:
And transmitting the power by transmitting an electromagnetic wave to the sensing terminal through the communication module. The method according to claim 1,
Wherein the transmitting comprises:
And transmitting the power to the sensing terminal through the communication module in an NFC manner. The method according to claim 1,
Wherein the step of transmitting and the step of receiving are simultaneously performed. delete The method according to claim 1,
Wherein the outputting step comprises:
And outputting a graph indicating a relationship between a current position and a position at which a magnitude of the measured value is maximum through a display unit based on the map. The method according to claim 6,
Wherein the graph is configured such that a position where the magnitude of the measurement value is the maximum is displayed at the center of the graph. The method according to claim 6,
Wherein the graph is configured to display a direction from the current position to a position where the magnitude of the measured value is maximum. The method according to claim 1,
Wherein the notification information is an acoustic wave that can detect a magnitude of a measurement value received after the map is generated. The method according to claim 1,
Wherein the notification information is a vibration that can detect a magnitude of a measurement value received after the map is generated. Transmitting power to a sensing terminal at a plurality of points,
A communication module for receiving a measurement of at least one of voltage, current or power supplied from the sensing terminal to the sensing terminal in real time at the plurality of points;
A sensor configured to obtain positional information of a point at which the measurement is received;
Storing the measured value and the position information in a matching manner,
A generation module for generating a map indicating a relationship between the size of the measurement value and the positional information based on the measurement value and the positional information; And
And an output module for outputting notification information so that the user can detect the size of the measurement value received after the map is generated based on the map. Transmitting power to the sensing terminal through the communication module at a plurality of points,
A measurement for at least one of voltage, current, and power supplied from the sensing terminal to the sensing terminal in real time at the plurality of points,
Acquiring position information of a point at which the measurement value is received,
Storing the measured value and the position information in a matching manner,
Generates a map indicating a relationship between the size of the measurement value and the positional information based on the measurement value and the positional information,
And a set of instructions for outputting alert information so that the user can sense the magnitude of the received measurement value after the map is generated based on the map.
KR1020150090941A 2015-06-26 2015-06-26 Method for providing information to adjust position of wireless power transmission terminal KR101706574B1 (en)

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