KR20240002491A - Device-to-device based wireless power transceiver and method for determining tramsmission/reception mode using deep learning model - Google Patents

Abstract

The present invention relates to a D2D-based wireless power transmission and reception device that determines a transmission and reception mode using a deep learning model, and includes a mode selection unit that monitors the battery and selects a transmission mode or a reception mode; a transmission mode determination unit that determines a transmission mode based on information from other devices when the transmission mode is selected; a reception mode determination unit that determines a reception mode based on status information of the wireless power transmission and reception device when the reception mode is selected; and a power transceiver unit that wirelessly transmits and receives power to and from the other device according to the transmission mode or the reception mode. Through this, wireless power charging efficiency can be maximized.

Description

D2D-based wireless power transmission and reception device and method for determining transmission and reception mode using deep learning model {DEVICE-TO-DEVICE BASED WIRELESS POWER TRANSCEIVER AND METHOD FOR DETERMINING TRAMSMISSION/RECEPTION MODE USING DEEP LEARNING MODEL}

The present invention relates to a D2D-based wireless power transmission and reception device and method for determining the transmission and reception mode using a deep learning model. More specifically, the present invention relates to a D2D-based wireless power transmission and reception device and method for determining the transmission and reception mode using a deep learning model for wirelessly transmitting and receiving power in D2D. It relates to a D2D-based wireless power transmission and reception device and method.

With recent developments in IoT (Internet of Things) technology, the number of IoT devices is increasing exponentially.

These Internet of Things devices are devices that collect various data from installed locations, including a power source, communication chipset, and process, and can transmit the collected data using an Internet of Things communication network or mobile communication network.

Additionally, the Internet of Things device performs designated functions according to control data received through the Internet of Things communication network or mobile communication network.

In this way, in order to continuously operate normally, IoT devices require power supply to the communication chipset and processor or charging of the power source.

In this regard, the conventional wired charging method not only requires connection to a charging line to the Internet of Things device, but also has the problem of limiting the mobility of the Internet of Things device.

As an alternative to solve this problem, a short-distance wireless charging system exists, but it has limitations in charging distance and the problem of only being able to charge IoT devices with one transmitting coil (TX coil) and one receiving coil.

As another alternative, there is a long-distance wireless charging system using RF (Radio Frequency) signals, but this long-distance wireless charging system requires fixed power consumption because it requires location detection of Internet of Things devices, and has low accuracy due to beam steering. It has the problem of severe power wastage due to shortage.

Therefore, there is a need for research and development on technologies that minimize power consumption and enable efficient power transmission and reception when IoT devices are wirelessly charged.

(Republic of Korea) Public Patent Publication No. 10-2017-0123074

The present invention was created to solve the above problems. The purpose of the present invention is to monitor the battery provided inside to select the transmission and reception mode, and to select the transmission and reception mode according to the information of other devices or the status information of the wireless power transmission and reception device. To provide a D2D-based wireless power transmission and reception device and method that determines the transmission and reception mode using a deep learning model that wirelessly transmits and receives power to and from other devices.

A D2D-based wireless power transmission and reception device that determines a transmission and reception mode using a deep learning model according to an embodiment of the present invention to achieve the above object includes a transmission and reception determination unit that determines whether to transmit or receive wireless power; If transmission is determined, a transmission mode determination unit that determines the transmission mode based on information from other devices; If reception is determined, a reception mode determination unit that determines a reception mode based on status information of the wireless power transmission and reception device; and a power transceiver unit that wirelessly transmits and receives power to and from the other device according to the transmission mode or the reception mode.

Here, the transmission mode determination unit generates a power sharing availability message indicating that power transmission to the other device is possible, and inputs the information about the other device received from the other device into a deep learning-based transmission mode decision model. Thus, at least one transmission mode can be determined.

At this time, the information on the other device may include information on the remaining battery capacity of the other device, required power information requested by the other device, and location information of the other device.

Meanwhile, the reception mode determination unit determines at least one reception mode by inputting state information of the wireless power transmission and reception device into a deep learning-based reception mode decision model, and determines the reception mode and the remaining battery capacity of the wireless power transmission and reception device. Accordingly, a power request message requesting power to the other device may be generated.

At this time, the reception mode determination unit generates at least one power request message by comparing the remaining capacity of the battery with the threshold range, but if the remaining capacity of the battery is less than the threshold range, the required power is urgently provided to the other device. Generates an emergency request message requesting power, and if the remaining capacity of the battery is within a critical range, generates a general request message requesting necessary power from the other device. If the remaining capacity of the battery is above the critical range, generates a general request message requesting power from the other device. A deny message can be generated to deny required power.

Here, the emergency request message and the general request message may include remaining battery capacity information of the wireless power transmission and reception device, required power information requested from the other device, and location information of the wireless power transmission and reception device.

And, the transmission mode and the reception mode include a Wireless Power Consortium (WPC) mode or an Alliance for Wireless Power (A4WP) mode for transmitting and receiving power to and from the other device over a short distance; and an RF (Radio Frequency) mode for transmitting and receiving power to and from the other device over a long distance.

Meanwhile, the wireless power transmission and reception method of the present invention for achieving the above object is a method performed by a D2D-based wireless power transmission and reception device, and includes a transmission/reception decision step of determining whether to transmit or receive wireless power; If transmission is determined, a transmission mode determination step of determining a transmission mode based on information of another device; When reception is determined, a reception mode determination step of determining a reception mode based on status information of the wireless power transmission and reception device; and a power transmission/reception step of wirelessly transmitting/receiving power to the other device according to the transmission mode or the reception mode.

Here, in the transmission mode determining step, power transmission to the other device is performed.

A power sharing availability message indicating that power sharing is possible can be generated, and at least one transmission mode can be determined by inputting information about the other device received from the other device into a deep learning-based transmission mode decision model.

At this time, the information on the other device may include information on the remaining battery capacity of the other device, required power information requested by the other device, and location information of the other device.

Meanwhile, the reception mode determination step determines at least one reception mode by inputting state information of the wireless power transmission and reception device into a deep learning-based reception mode decision model, and determining the reception mode and the remaining battery of the wireless power transmission and reception device. Depending on the capacity, a power request message may be generated requesting power from the other device.

At this time, the reception mode determining step generates at least one power request message by comparing the remaining capacity of the battery with the threshold range, and if the remaining capacity of the battery is less than the threshold range, the required power is urgently provided to the other device. generates an emergency request message requesting power from the other device, and if the remaining capacity of the battery is within a critical range, generates a general request message requesting necessary power from the other device; and when the remaining capacity of the battery is above the critical range, the other device A deny message can be generated to deny the required power to the user.

Here, the emergency request message and the general request message may include remaining battery capacity information of the wireless power transmission and reception device, required power information requested from the other device, and location information of the wireless power transmission and reception device.

And, the transmission mode and the reception mode include a Wireless Power Consortium (WPC) mode or an Alliance for Wireless Power (A4WP) mode for transmitting and receiving power to and from the other device over a short distance; and an RF (Radio Frequency) mode for transmitting and receiving power to and from the other device over a long distance.

According to one aspect of the present invention described above, wireless power charging efficiency can be maximized by providing a D2D-based wireless power transmission and reception device and method that determines the transmission and reception mode using a deep learning model.

In addition, by providing a D2D-based wireless power transmission and reception device and method that determines the transmission and reception mode using a deep learning model, the consumption of fixed power used to detect the location of the device when transmitting and receiving wireless power can be reduced. .

Figure 1 is an example diagram of a D2D system including a D2D-based wireless power transmission and reception device that determines the transmission and reception mode using a deep learning model according to an embodiment of the present invention.
Figure 2 is a block diagram of a D2D-based wireless power transmission and reception device that determines the transmission and reception mode using a deep learning model according to an embodiment of the present invention.
FIG. 3 is a detailed block diagram of the power transmitting and receiving unit of FIG. 2.
4 to 6 are flow diagrams of a wireless power transmission and reception method according to an embodiment of the present invention.

The detailed description of the present invention described below refers to the accompanying drawings, which show by way of example specific embodiments in which the present invention may be practiced. These embodiments are described in sufficient detail to enable those skilled in the art to practice the invention. It should be understood that the various embodiments of the present invention are different from one another but are not necessarily mutually exclusive. For example, specific shapes, structures and characteristics described herein may be implemented in one embodiment without departing from the spirit and scope of the invention. Additionally, it should be understood that the location or arrangement of individual components within each disclosed embodiment may be changed without departing from the spirit and scope of the invention. Accordingly, the detailed description that follows is not intended to be taken in a limiting sense, and the scope of the invention is limited only by the appended claims, together with all equivalents to what those claims assert, if properly described. Similar reference numbers in the drawings refer to identical or similar functions across various aspects.

In addition, the features and advantages of the present invention will become clearer with the detailed description based on the accompanying drawings, and the terms and words used in the present specification and claims should not be interpreted in the usual, dictionary meaning, and the inventor should not In order to explain one's invention in the best way, it should be interpreted as meaning and concept consistent with the technical idea of the present invention based on the principle that the concept of the term can be appropriately defined.

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

Figure 1 is an example diagram of a D2D system including a D2D-based wireless power transmission and reception device that determines the transmission and reception mode using a deep learning model according to an embodiment of the present invention, and Figure 2 is a deep learning system according to an embodiment of the present invention. It is a block diagram of a D2D-based wireless power transmission and reception device that determines the transmission and reception mode using a model, and FIG. 3 is a detailed block diagram of the power transmission and reception unit of FIG. 2.

Referring to FIG. 1, the D2D system 10 according to an embodiment of the present invention is a D2D-based wireless power transmission and reception device (hereinafter referred to as a wireless power transmission and reception device) that determines the transmission and reception mode using at least one deep learning model. 100).

The D2D system 10 is a system in which terminals adjacent to each other directly transmit and receive information and power without going through an infrastructure such as a base station, and can be implemented using Bluetooth, FlashLinQ, and Wi-Fi Direct.

This D2D system 10 may be set up in a distributed communication environment to transmit and receive information or power between each wireless power transmission and reception device 100.

Here, the D2D system 10 can be applied to various locations regardless of location or environment.

For example, the D2D system 10 may be applied to production facilities or equipment such as factories, workplaces, and workshops, or to residences such as apartments and single-family homes, or to public places, etc.

In this D2D system 10, the spatial map (S) may be set in advance by the user, or the spatial map (S) may be set according to location information where the wireless power transmission and reception device 100 is located.

Accordingly, in this specification, for easy description of the present invention, one wireless power transmission and reception device 100 among the at least one wireless power transmission and reception device 100 included in the D2D system 10 determines the transmission and reception mode, This will be explained as transmitting and receiving power or data with another wireless power transmitting and receiving device (hereinafter referred to as other device) 100 according to the determined transmitting and receiving mode.

Meanwhile, the wireless power transmission and reception device 100 may be mobile or fixed. The wireless power transmission and reception device 100 may be in the form of a server or engine, and may be used as an apparatus, terminal, user equipment (UE), mobile station (MS), wireless device, or mobile device. It may be called by other terms such as (handheld device).

In addition, the wireless power transmission and reception device 100 can execute or produce various software based on an operating system (OS), that is, a system. The operating system is a system program that allows software to use the hardware of the device, and includes mobile computer operating systems such as Android OS, iOS, Windows Mobile OS, Bada OS, Symbian OS, Blackberry OS, Windows series, Linux series, Unix series, etc. It can include all computer operating systems such as MAC, AIX, and HP-UX.

Accordingly, the wireless power transmission and reception device 100 includes a transmission and reception determination unit 110 and a transmission mode determination unit 130, as shown in FIG. 2, in order to perform a wireless power transmission and reception method of wirelessly transmitting and receiving power with another device. , may include a reception mode determination unit 150, a communication unit 170, and a power transmission/reception unit 190.

In addition, the wireless power transmission and reception device 100 may be installed and executed with software (application) for performing a wireless power transmission and reception method, and includes a transmission and reception determination unit 110, a transmission mode determination unit 130, and a reception mode. The determination unit 150, the communication unit 170, and the power transmitting and receiving unit 190 may be controlled by software for performing the wireless power transmitting and receiving method performed by the wireless power transmitting and receiving device 100.

In addition, the wireless power transmission and reception device 100, although not shown in the drawing, stores a deep learning-based model used in the wireless power transmission and reception device 100, and includes a transmission and reception determination unit 110 and a reception mode determination unit 150. In addition to storing the state information used by the device or storing information about other devices received through the communication unit 170, this storage unit also stores the wireless power transmission and reception performed by the wireless power transmission and reception device 100. It may be stored by software for performing the method.

And, the wireless power transmission and reception device 100 may be a separate terminal or a module. Additionally, the transmission/reception determination unit 110, transmission mode determination unit 130, reception mode determination unit 150, communication unit 170, and power transmission/reception unit 190 may be formed as an integrated module or may be comprised of one or more modules. However, on the contrary, each configuration may be comprised of a separate module.

This wireless power transmission and reception device 100 is a device that has a transceiver circuit provided therein to wirelessly transmit and receive power to and from other devices.

Here, the transceiver circuit corresponds to the power transmitting and receiving unit 190 of the present invention, and a detailed description of the power transmitting and receiving unit 190 will be described below for easy description of the present invention.

Accordingly, when the wireless power transmitting and receiving device 100 is selected in the transmission mode and performs the role of a transmitter, it can simultaneously wirelessly transmit power and data to another device using a single signal.

At this time, the wireless power transmitting and receiving device 100 may independently supply power to each of one or more other devices by transmitting wireless signals and data.

Meanwhile, when the wireless power transmitting and receiving device 100 is selected in a receiving mode and performs the role of a receiver, it can obtain data and power from a signal wirelessly transmitted from another device and supply power itself.

At this time, the wireless power transmitting and receiving device 100 may independently supply power to one or more other devices by receiving wireless signals.

Accordingly, the wireless power transmitting and receiving device 100 uses a single tone based SWIPT method using an I/Q (In-phase/quadrature) modulation method based on the orthogonality of the channel. You can transmit and receive power to and from other devices.

In addition, the wireless power transmitting and receiving device 100 can transmit and receive power with another device through a PARP-based SWIPT (PARP transmission technique) that transmits information and energy using a multi-tone signal.

Here, the PARP transmission technique is a technique that transmits information using peak-to-average power ratio (PARP) and increases the efficiency of wireless power transmission by using multiple tones.

As shown in FIG. 2, the wireless power transmitting and receiving device 100, which wirelessly transmits and receives power with another device using such a single tone modulation method or PARP transmission technique, includes a transmission and reception determination unit 110 and a transmission mode determination unit ( 130), a reception mode determination unit 150, a communication unit 170, and a power transmission/reception unit 190.

First, the transmission/reception determination unit 110 determines whether to transmit/receive wireless power.

More specifically, the transmission/reception decision unit 110 may decide whether to transmit or receive by comparing a threshold value set by the user or a battery B provided inside.

In this regard, the transmission/reception decision unit () may monitor the battery (B) provided therein at regular time intervals to check the remaining capacity of the battery (B).

Additionally, the transmission/reception decision unit () compares the remaining capacity of the battery () with a preset threshold, and may determine transmission if the remaining capacity is greater than or equal to the threshold, and may determine reception if the remaining capacity is less than the threshold.

Here, the preset threshold may be a value set by the user or a threshold calculated by inputting the remaining capacity into a deep learning-based algorithm model.

Additionally, the transmission/reception determination unit 110 may estimate the usage amount of the battery B based on the remaining capacity of the battery B.

More specifically, the transmission/reception decision unit 110 may estimate the usage amount as the capacity obtained by subtracting the remaining capacity of one time interval and the remaining capacity of subsequent time intervals as a result of monitoring the battery B at regular time intervals. there is.

At this time, the transmission/reception decision unit 110 collects the capacity obtained by subtracting the remaining capacity of each time interval from the remaining capacity of subsequent time intervals, and estimates the capacity divided by the number of time intervals from the collected capacity as the hourly usage amount. You can.

Additionally, the transmission/reception decision unit 110 may determine transmission or reception by further considering the estimated hourly usage.

More specifically, when the remaining capacity of the battery B is greater than the threshold but the hourly usage is high, the transmission/reception decision unit 110 may determine reception during that time period.

In addition, when the remaining capacity of the battery B is less than the threshold but the hourly usage is low, the transmission/reception determination unit 110 transmits the capacity excluding the remaining capacity capable of maintaining power of the wireless power transmission/reception device 100. You can decide by sending.

Meanwhile, when transmission is determined, the transmission mode determination unit 130 determines the transmission mode based on information from other devices.

Here, if the transmission mode determination unit 130 determines the wireless power transmission and reception device () as transmission, the transmission mode determination unit 130 may generate a power sharing availability message indicating that power transmission to another device is possible. .

Additionally, the transmission mode determination unit 130 may determine at least one transmission mode by inputting information about another device received from another device into a deep learning-based transmission mode decision model.

Here, the information about the other device may include information about the remaining battery capacity of the other device, required power information requested by the other device, and location information of the other device.

Additionally, information about another device may be delivered in the form of any one of an emergency request message, a general request message, and a rejection message according to the transmission/reception mode determined by the other device.

More specifically, the transmission mode determination unit 130 may receive information about other devices by transmitting the generated power sharing availability message to other devices using the communication unit 170 below.

Additionally, the transmission mode determination unit 130 may output the transmission mode as an output by inputting information about other devices into the transmission mode decision model.

Here, the transmission mode determination unit 130 learns information about other devices previously received from other devices using a CNN (Convolution Neural Network) algorithm to generate a transmission mode decision model that outputs a transmission mode according to the input data. You can.

Additionally, the transmission mode determination unit 130 may calculate transmission power to be transmitted to another device based on information about the other device received from the other device.

Here, when the required power requested by another device among the other device information is greater than the power according to the remaining capacity of the battery B, the transmission mode determination unit 130 may calculate the transmission power using the power according to the remaining capacity of the battery B. there is.

In addition, when the required power requested by another device among the other device information is less than the power according to the remaining capacity of the battery B, the transmission mode determination unit 130 calculates the required power requested by the other device as the transmission power. can do.

Meanwhile, when reception is determined, the reception mode determination unit 150 determines the reception mode based on the status information of the wireless power transmission and reception device 100.

At this time, the reception mode determination unit 150 generates the remaining capacity of the battery B, usage amount, and location information of the wireless power transmission/reception device 100 confirmed by the transmission/reception determination unit 110 as one data set to generate wireless power It can be used as status information of the transmitting and receiving device 100.

More specifically, when the transmission/reception determination unit 110 determines that the wireless power transmission/reception device 100 is receiving, the reception mode determination unit 150 determines the status information of the wireless power transmission/reception device 100 into a deep learning-based reception mode. At least one reception mode can be determined by inputting it into a decision model.

This reception mode determination unit 150 can generate a reception mode decision model that outputs a reception mode according to the input data by learning state information previously generated in a CNN (Convolution Neural Network) algorithm.

Additionally, the reception mode determination unit 150 may generate a power request message requesting power from another device according to the determined reception mode and the remaining capacity of the battery B.

More specifically, when the reception mode determination unit 150 determines the reception mode output by the reception mode decision model as the reception mode, the reception mode determination unit 150 compares the remaining capacity of the battery B and the threshold range to generate at least one power request message. can do.

If the remaining capacity of the battery B is less than a preset threshold range, the reception mode determination unit 150 may generate an emergency request message to urgently request necessary power from another device.

Here, the emergency request message is a message generated to receive required power with higher priority than other devices.

Additionally, the reception mode determination unit 150 may generate a general request message requesting required power from another device if the remaining capacity of the battery B is within a preset threshold range.

Here, the general request message is a message generated to request required power according to the order of all reception request messages received by other devices.

Additionally, the reception mode determination unit 150 may generate a rejection message denying necessary power to other devices if the remaining capacity of the battery B is greater than or equal to a preset threshold range.

Here, the reject message is a message generated to stop a power request from another device when enough power is stored in the battery (B).

Accordingly, the emergency request message and the general request message generated by the reception mode determination unit 150 include remaining capacity information of the battery B, required power information requested from another device, and location information of the wireless power transmitting and receiving device 100. It can be included.

Meanwhile, the reception mode and reception mode determined by the transmission mode determination unit 130 and the reception mode determination unit 150 may include WPC mode, A4WP mode, and RF mode.

More specifically, WPC (Wireless Power Consortium) mode and A4WP (Alliance for wireless Power) mode are modes for wirelessly transmitting and receiving power to and from other devices at a short distance.

First, the WPC mode is a magnetic induction transmission and reception method using a frequency of 100 kHz to 205 kHz, and is a mode that transmits and receives power to and from another device at a short distance using one coil pair.

Additionally, the A4WP mode is a magnetic resonance transmission/reception method using a frequency of 6.78 MHz, and, like the WPC mode, is a mode that transmits/receives power to and from another device at a short distance using one coil pair.

Additionally, the RF mode is an RF (Radio Frequency) reception method that uses high frequencies of 300 MHz or higher, and is a mode that transmits and receives power to and from other devices over a long distance using an RF antenna.

Since these WPC mode, A4WP mode, and RF mode are known communication technologies, detailed descriptions will be omitted in this specification.

Meanwhile, the communication unit 170 broadcasts the messages generated by the transmission mode determination unit 130 and the reception mode determination unit 150 to other devices.

More specifically, the communication unit 170 sends any one of the power sharing availability message generated by the transmission mode determination unit 130, the emergency request message generated by the reception mode determination unit 150, the general request message, and the rejection message. Can be broadcast to at least one other device present in the D2D system 10.

Meanwhile, the power transmitting and receiving unit 190 wirelessly transmits and receives power to and from other devices according to the transmitting mode or the receiving mode.

Referring to FIG. 3, the power transmitting and receiving unit 190 may be provided as a transceiver circuit including a back-scattering modulator (Back-scattering Tx) in order to wirelessly transmit and receive power to another device.

Here, the back-scattering modulator (Back-scattering Tx) may be provided to generate and transmit power signals transmitted and received from other devices as AM signals using a tone frequency or to store them in a battery (B).

More specifically, the back-scattering modulator (Back-scattering Tx) converts the bits of the identifier, received power signal, and stored power signal according to the (bit) encoding method promised with other devices to the tone frequency according to the amplitude-size control signal. It can be generated as an AM signal and output or saved.

Meanwhile, the power transceiver 190 may include a phase locked loop (PLL), a phase shifter (PS), and a plurality of power amplifiers (PA) in order to transmit power to another device that exists near or far away. .

The phase locked loop (PLL) is a circuit that outputs a high frequency signal and can be provided to generate a power signal to be transmitted and received to another device based on the remaining power present in the battery (B).

The phase shifter (PS) is a circuit that detects and changes the phase angle of a radio frequency or microwave signal. It can be provided to change the phase angle of the power signal generated from the phase locked loop (PLL) and convert it into a high frequency signal. .

The power amplifier (PA) is an amplifier that amplifies the voltage of a signal and may be provided to amplify the voltage of a current signal generated by a phase locked loop (PLL) or a high frequency signal converted by a phase shifter (PS).

Accordingly, the power transmitting and receiving unit 190, when the transmitting and receiving determining unit 110 determines the wireless power transmitting and receiving device 100 as transmitting and the transmitting mode determining unit 130 determines the transmitting mode as WPC mode or A4WP mode, The voltage of a transmission signal transmitted over a short distance can be generated using a phase locked loop (PLL) and a plurality of power amplifiers (PA).

In addition, when the transmission/reception determination unit 110 determines the wireless power transmission/reception device 100 to be a transmitter and the transmission mode determination unit 130 determines the transmission mode to be an RF mode, the power transceiver 190 operates in a phase-locked loop. (PLL), phase shifter (PS), and one power amplifier (PA) can be used to generate the voltage of a high-frequency transmission signal to be transmitted over a long distance.

Meanwhile, the power transmitting and receiving unit 190 includes an adaptive matching network (AMN), a rectifier, an RF-DC converter (RF-DC), and a DC- May include a DC converter (DC-DC).

Adaptive matching network (AMN) is a controller that calculates the amount of received power by applying the optimal matching value according to impedance conditions to the signal. It provides a matching value to the power signal received from another device. It can be applied to calculate the required amount of power received from other devices.

At this time, the adaptive matching network (AMN) sets a matching value so that the current signal received from another device is calculated as either an RF signal or an electrostatic signal according to the reception mode determined by the reception mode determination unit 150. can be applied.

Here, when the reception mode is determined to be WPC mode or A4WP mode, the adaptive matching network (AMN) calculates a static electricity signal by applying a matching value to the current signal, and converts the calculated static electricity signal to a rectifier. It can be delivered.

A rectifier is a circuit that generates a DC voltage from an input signal and can be provided to convert the static signal transmitted from the adaptive matching network (AMN) into a DC voltage.

And, when the reception mode is determined to be RF mode, the adaptive matching network (AMN) calculates an RF signal by applying a matching value to the current signal, and converts the calculated RF signal into an RF-DC converter (RF-DC). ) can be transmitted.

The RF-DC converter (RF-DC) is a converter that converts an RF signal into a DC voltage, and can be prepared to convert an RF signal transmitted from an adaptive matching network (AMN) into a DC voltage.

DC-DC converter (DC-DC) is a converter that converts DC voltage down (or up) to another DC voltage and outputs it. One end is connected to the battery (B) and is used as a rectifier or RF-DC converter (RF). -DC) can be prepared to convert the converted DC voltage into a DC voltage suitable for charging the battery (B).

Meanwhile, the power transceiver 190 may further include a multiplexer (MUX) in the transceiver circuit to transmit and receive power to and from other devices.

A multiplexer (MUX) is a device that selects one signal from a plurality of signals and transmits it to one line. It transmits the power signal received from another device to the adaptive matching network (AMN) or from the power amplifier (PA). It can be prepared to transmit the amplified power signal to another device.

Here, the multiplexer (MUX), although not shown in the drawing, is a pair of coils combined to transmit and receive power from other devices existing in the short distance, and an RF antenna to transmit and receive power from other devices existing in the distance. When combined, power can be transmitted and received wirelessly with other devices.

These include a back-scattering modulator (Back-scattering Tx), phase locked loop (PLL), phase shifter (PS), multiple power amplifiers (PA), adaptive matching network (AMN), rectifier, and RF-DC. Converters (RF-DC) and DC-DC converters (DC-DC) are formed as a single circuit structure or as a circuit module in which each circuit is combined to wirelessly transmit and receive power to and from other devices located near or far away. can do.

Accordingly, the wireless power transmitting and receiving device 100 determines whether to transmit or receive, operates in either a transmission mode or a reception mode using a deep learning-based model, and operates in a short or long distance depending on the transmission mode or reception mode. Power can be transmitted and received wirelessly with other devices present in the device, maximizing wireless power charging efficiency.

Meanwhile, FIGS. 4 to 6 are flow diagrams of a wireless power transmission and reception method according to an embodiment of the present invention. The wireless power transmission and reception method according to an embodiment of the present invention is a wireless power transmission and reception device 100 shown in FIGS. 1 to 3. ), so the same reference numerals as the wireless power transmission and reception device 100 of FIGS. 1 to 3 will be assigned, and repeated descriptions will be omitted.

Referring to FIGS. 4 to 6 , the wireless power transmission and reception method according to an embodiment of the present invention includes a wireless power transmission and reception device 100 that wirelessly transmits and receives power to and from another device located nearby or at a long distance in the D2D system 10. The method is performed and includes a transmission/reception determination step (S10), a transmission mode determination step (S30), a reception mode determination step (S50), and a power transmission/reception step (S70).

First, the wireless power transmission and reception device 100 performs a transmission/reception determination step (S10) to determine whether to transmit or receive wireless power.

Thereafter, when the wireless power transmission and reception device 100 determines transmission (S110), it performs a transmission mode determination step (S30) in which the transmission mode is determined based on information of another device.

More specifically, in the transmission mode determination step (S30), the wireless power transmission and reception device 100 generates a power sharing availability message indicating that power transmission to another device is possible (S310), and receives power from the other device. At least one transmission mode can be determined (S350) by inputting device information into a deep learning-based transmission mode decision model.

At this time, the wireless power transmission and reception device 100 may receive information about other devices by broadcasting a power sharing availability message to other devices through the communication unit 170 (S320).

Here, the information about the other device may include remaining capacity information of the other device, required power information requested by the other device, and location information of the other device.

In addition, the wireless power transmitting and receiving device 100 operates in the WPC mode (S351) when the transmission mode decision model outputs the WPC mode, operates in the A4WP mode (S353) when the transmission mode decision model outputs the RF mode, and operates in the RF mode (S353) when the transmission mode decision model outputs the WPC mode. It can be operated in mode (S353).

Meanwhile, when the wireless power transmission and reception device 100 determines reception (S130), it performs a reception mode determination step (S50) in which the reception mode is determined based on the status information of the wireless power transmission and reception device 100.

More specifically, the wireless power transmission and reception device 100 determines at least one reception mode by inputting state information of the wireless power transmission and reception device 100 into a deep learning-based reception mode decision model in the reception mode determination step (S50). (S510) You can.

In addition, in the reception mode determination step (S50), the wireless power transmission and reception device 100 sends a power request message requesting power to another device according to the reception mode and the remaining capacity of the battery (B) of the wireless power transmission and reception device 100. can be created.

More specifically, in the reception mode determination step (S50), the wireless power transmission and reception device 100 compares the remaining capacity of the battery (B) of the wireless power transmission and reception device 100 with the threshold range (S530) to send at least one power request message. can be created.

At this time, if the remaining capacity of the battery B is less than the threshold range, the wireless power transmitting and receiving device 100 may generate an emergency request message (S5311) to urgently request necessary power from another device.

And, if the remaining capacity of the battery B is within the critical range, the wireless power transmitting and receiving device 100 may generate a general request message requesting necessary power from another device (S5331).

And, if the remaining capacity of the battery B is more than a threshold range, the wireless power transmission and reception device 100 may generate a rejection message denying necessary power to other devices (S5351).

Here, the emergency request message and the general request message may include remaining capacity information of the battery (B) of the wireless power transmission and reception device 100, required power information requested from another device, and location information of the wireless power transmission and reception device 100. there is.

Accordingly, the transmission mode and reception mode determined by the wireless power transmission and reception device 100 include WPC mode or A4WP mode for transmitting and receiving power to other devices at a short distance and RF mode for transmitting and receiving power to other devices at a distance. can do.

Accordingly, the wireless power transmission and reception device 100 can maximize wireless power charging efficiency by performing a wireless power transmission and reception method.

Although various embodiments of the present invention have been shown and described above, the present invention is not limited to the specific embodiments described above, and may be used in the technical field to which the invention pertains without departing from the gist of the invention as claimed in the claims. Of course, various modifications can be made by those skilled in the art, and these modifications should not be understood individually from the technical idea or perspective of the present invention.

10: D2D system
100: wireless power transmitting and receiving device
110: Transmission/reception decision unit
130: Transmission mode decision unit
150: reception mode decision unit
170: Department of Communications
190: Power transmitting and receiving unit
B: battery
S: spatial map

Claims (14)

In a D2D-based wireless power transmission and reception device.
a transmission/reception determination unit that determines whether to transmit or receive wireless power;
If transmission is determined, a transmission mode determination unit that determines the transmission mode based on information from other devices;
If reception is determined, a reception mode determination unit that determines a reception mode based on status information of the wireless power transmission and reception device; and
A power transmitting and receiving unit that wirelessly transmits and receives power to and from the other device according to the transmitting mode or the receiving mode.
According to paragraph 1,
The transmission mode determination unit,
Generate a power sharing availability message indicating that power transmission to the other device is possible,
A wireless power transmission and reception device, characterized in that at least one transmission mode is determined by inputting information about the other device received from the other device into a deep learning-based transmission mode decision model.
According to paragraph 2,
The information of the other devices is,
A wireless power transmission and reception device comprising remaining battery capacity information of the other device, required power information requested by the other device, and location information of the other device.
According to paragraph 1,
The reception mode determination unit,
Input status information of the wireless power transmission and reception device into a deep learning-based reception mode decision model to determine at least one reception mode,
A wireless power transmission and reception device, characterized in that generating a power request message requesting power to the other device according to the reception mode and the remaining battery capacity of the wireless power transmission and reception device.
According to paragraph 4,
The reception mode determination unit,
Generate at least one power request message by comparing the remaining capacity of the battery and the critical range,
If the remaining capacity of the battery is below a threshold range, generate an emergency request message to urgently request necessary power from the other device,
If the remaining capacity of the battery is within the critical range, generate a general request message requesting required power from the other device,
A wireless power transmission and reception device, characterized in that when the remaining capacity of the battery is more than a threshold range, a rejection message is generated to deny necessary power to the other device.
According to clause 5,
The emergency request message and the general request message are,
A wireless power transmission and reception device comprising remaining battery capacity information of the wireless power transmission and reception device, required power information requested from the other device, and location information of the wireless power transmission and reception device.
According to paragraph 1,
The transmitting mode and the receiving mode are,
WPC (Wireless Power Consortium) mode or A4WP (Alliance for Wireless Power) mode for transmitting and receiving power with the other device over a short distance; and
A wireless power transmission and reception device comprising: a Radio Frequency (RF) mode for transmitting and receiving power to and from the other device over a long distance.
In a wireless power transmission and reception method performed by a D2D-based wireless power transmission and reception device,
A transmission/reception decision step of determining whether to transmit/receive wireless power;
If transmission is determined, a transmission mode determination step of determining a transmission mode based on information of another device;
When reception is determined, a reception mode determination step of determining a reception mode based on status information of the wireless power transmission and reception device; and
A power transmission and reception step of wirelessly transmitting and receiving power to and from the other device according to the transmission mode or the reception mode.
According to clause 8,
The transmission mode decision step is,
Generating a power sharing availability message indicating that power transmission to the other device is possible,
A wireless power transmission and reception method, characterized in that at least one transmission mode is determined by inputting information about the other device received from the other device into a deep learning-based transmission mode decision model.
According to clause 9,
The information of the other devices is,
A method for transmitting and receiving wireless power, comprising remaining battery capacity information of the other device, required power information requested by the other device, and location information of the other device.
According to clause 8,
The reception mode decision step is,
Input status information of the wireless power transmission and reception device into a deep learning-based reception mode decision model to determine at least one reception mode,
A method for transmitting and receiving wireless power, characterized in that generating a power request message requesting power to the other device according to the reception mode and the remaining battery capacity of the wireless power transmission and reception device.
According to clause 11,
The reception mode decision step is,
Generate at least one power request message by comparing the remaining capacity of the battery and the critical range,
If the remaining capacity of the battery is below a threshold range, generate an emergency request message to urgently request necessary power from the other device,
If the remaining capacity of the battery is within the critical range, generate a general request message requesting required power from the other device,
A method for transmitting and receiving wireless power, characterized by generating a rejection message denying necessary power to the other device when the remaining capacity of the battery is more than a threshold range.
According to clause 12,
The emergency request message and the general request message are,
A method for transmitting and receiving wireless power, comprising remaining battery capacity information of the wireless power transmitting and receiving device, required power information requested from the other device, and location information of the wireless power transmitting and receiving device.
In paragraph 8.
The transmitting mode and the receiving mode are,
WPC (Wireless Power Consortium) mode or A4WP (Alliance for Wireless Power) mode for transmitting and receiving power with the other device over a short distance; and
RF (Radio Frequency) mode for transmitting and receiving power to and from the other device over a long distance.