KR20200088584A - Wireless transmit receive system for transmits data and power at the same time - Google Patents

Abstract

The wireless transmission/reception system that simultaneously transmits data and power according to the present invention does not use BLE or IEE 802.15.4q (ULP) that causes additional power loss for effective energy management of a batteryless small monitoring sensor that cannot supply power. In addition, it optimizes transmission/reception, charging, data transmission rate and transmission error rate in a wireless channel to enable bidirectional information transmission of frequency bands used for power transmission, and performs downlink functions including random access channel, scheduling, and header construction. In addition, it maps to the PHY and acquires the power transmission channel by the reverse link through adaptive beamforming control to maximize the efficiency of wireless RF power transmission and utilizes the coarse & fine beam scanning method. It is characterized by providing data and power while efficiently recognizing the position of one power data/power receiving module terminal, BLE that causes additional power loss for effective energy management of a batteryless compact monitoring sensor that cannot supply power. It does not use IEE 802.15.4q (ULP) and has the effect of simultaneously transmitting data and power capable of information transmission in both directions in the frequency band used for power transmission.

Description

Wireless transmit receive system for transmits data and power at the same time

The present invention relates to a wireless transmission/reception system that simultaneously transmits data and power, and more specifically, Bluetooth (BLE) or IEE that causes additional power loss for effective energy management of a batteryless small monitoring sensor that cannot be powered. Transmitting and receiving wireless power signals so that power is supplied in response to the number of data/power receiving module terminals by enabling information transmission in both directions in the frequency band used for wireless power transmission without using 802.15.4q (ULP). The present invention relates to a wireless transmission/reception system that simultaneously transmits improved data and power.

Power delivery to the load has been known for some time, and one of the most widely used methods is to convert, for example, alternating current (AC) generated by a common electrical distribution grid into a continuous voltage (DC) suitable for powering the load. It is possible to use an AC/DC converter. The load to be supplied can be directly connected to the AC/DC converter, for example, via a conventional wire connection. For greater feasibility, mechanical systems of appropriately shaped electrical contacts, such as conductive plates connected to the converter and connected to the load, may be placed in contact with the corresponding electrical contact, electrical connector or load powered by the contact. Connections can be made between AC/DC converters. Such contact systems are generally manufactured using a geometry that ensures a galvanic connection between the contacts and at least two points where the dislocations are different while always preventing short circuits.

Another known type of method for transferring power to a load starting from an electrical voltage is to use a wireless energy transmission system based on inductive or capacitive coupling between a transmission system and a reception system, for example, wherein the transmission system is a charging device. On the other hand, the receiving system is located on a user device that is powered/recharged, and the user device is separate and separate from the charging device.

In the field of systems based on inductive coupling, for example, a transmitting antenna having a reel or helical shape is commonly used, and the receiving antenna is located on a powered user device. In this way, even if there is no galvanic connection between the primary circuit and the secondary circuit, it is possible to provide power to various types of electrical and electronic devices.

Another known type of solution for delivering power includes systems based on capacitive coupling. In this case, for example, a transmission armature consisting of a conductive region separated from the environment by the facing dielectric material is used, such as to accommodate the armature and thus constitute at least two electrical capacitances. Electric power can be transmitted by applying a voltage wave to the electrical capacitance at the inlet. Each electrical capacitance that is supplied with a voltage wave can in fact be regarded as an impedance, resulting in a sufficiently high voltage wave frequency and/or by a sufficiently large electrical capacitance and/or by a voltage wave of sufficiently high amplitude, output from the electrical capacitance coupling. In this case, a sufficiently large voltage wave can be advantageously supplied to the load.

To implement a power and/or wireless recharging system according to the capacitive coupling principle, a first armature of each capacitance installed in a user device (eg, a mobile phone, computer, television, etc.) is provided and a second armature of each capacitance It is advantageous that it is installed in the feeder, which defines a suitable feed surface. In this way, by placing the user device on the supplier device side or vice versa, the armatures installed on each emit the above-described coupling and transmission capacitances of electrical energy.

If the armature has to be integrated into an integral part, i.e. a capacitor, the secondary circuit can be effectively used as an AC/DC or DC/DC voltage converter galvanically isolated from the primary circuit due to the capacitor.

As described above, in order to obtain high performance by the capacitive system, the voltage of the voltage applied to the transmitting armature is significantly increased and/or the area of the armature is increased and/or a voltage waveform of sufficiently high amplitude is applied to the armature. It is generally necessary to apply.

The area of the armature is usually limited to the user device geometry and the supply surface area of the supply, or for integral capacitors, for safety reasons, the capacitance is often directed to be connected to the insulation of the secondary circuit by any final transient voltage peak. The best way to achieve high performance in a capacitive system is to apply it to the transmitting armature, for example, due to transformers that require high voltage during operation, not only a significant increase in voltage amplitude, but also an increase in the size and cost of the system determines safety issues. This is to significantly increase the frequency of the voltage wave.

An extremely advantageous way to achieve this result is to use an electrical circuit implemented according to a near-resonance or full resonant layout, where the circuit topology and pilot system minimizes or almost completely eliminates dynamic leaks from the switch. It can be eliminated, thus enabling a high switching frequency and low leakage. A category of radio circuits that advantageously achieves this goal is derived from the appropriate modification of E, F or E/F class amplifiers, or somehow from the use of resonant or quasi-resonant circuits.

An example of such a wireless supply/recharge system is disclosed, for example, in an international patent application published in WO 2002/0150352, filed October 10, 2013.

With regard to transmission and thus data exchange, widely used schemes of known type are cabling (e.g., USB, HDMI, Ethernet, etc.) with different performances in terms of covered distance, cost, consumption and passband. Firewire, Thunderbolt, etc.) or wireless connections (eg, Wi-Fi, Bluetooth, RF, ZigBee, UWB, etc.).

Indeed, based on inductive coupling for transmitting other data, it is possible to use a known type of wireless energy transmission system, for example a Qi wireless battery charger. By changing such a system, apart from the supply, also simple information, i.e. limited amount of data, such as information about the state of charging and/or supply, the ID number of the device and chipset, start-up Information, pauses, charging and/or information about controlling supply can be transmitted, but they can be used to transmit more complex data packages.

One of the major drawbacks of these known systems is expressed in particular by the size of the transmit and receive inductances. In order to transmit enough power, these elements typically have high inductance values, so the data transmission is essentially limited to extremely small passbands.

As a prior document for solving the above-mentioned problems, "How to simultaneously transmit data and power wirelessly and a transmitting device and a receiving device using the same" in Korean Patent Registration No. 10-1829625 (Publication on February 19, 2018) includes data and The method of simultaneously transmitting power includes (a) transmitting a power transmission signal having a peak-to-average ratio corresponding to the data to be transmitted by the first side, and (b) a second And receiving the power transmission signal to obtain the peak-to-average ratio, and (c) restoring the data from the calculated peak-to-average ratio by the second side. A transmission device, the transmission device comprising: a signal generator forming a power transmission signal; The power transmission signal includes a modulator for controlling the signal generator and an antenna for emitting the power transmission signal so as to have a peak-to-average ratio corresponding to the data to be transmitted. The receiving device includes an antenna for receiving a power transmission signal; A rectifying circuit unit for receiving and outputting the power transmission signal received and output by the antenna and rectifying the signal; There is provided a demodulator that calculates an energy reservoir that is charged with a signal output by the rectifying circuit unit and a peak-to-average ratio of the power transmission signal, and restores data corresponding to the peak-to-average ratio.

Korean Registered Patent Publication No. 10-1829625 (announced on Feb. 19, 2018)

The present invention for solving the above problems is used for wireless power transmission without using BLE or IEE 802.15.4q (ULP) that causes additional power loss for effective energy management of a batteryless small monitoring sensor that cannot be powered. The purpose of the present invention is to provide a wireless transmission/reception system that simultaneously transmits and receives data to transmit and receive wireless power signals so that power can be supplied in response to the number of data/power receiving module terminals by enabling information transmission in both directions in a frequency band. There is this.

The present invention applies a beam scan based on a coarse & fine algorithm to recognize the position of the receiver and determine the optimal power transmission path, the distance from the data/power receiving module terminal, the number of data/power receiving module terminals, and each data. / Monitoring the required amount of power in the power receiving module terminal, including the function of determining the charging order and optimizing the power transmission efficiency using the beamforming technology. Also, through the optimized time division algorithm, to meet the required power for each data/power receiving module terminal. The purpose is to provide a transmission module terminal that transmits as much power as necessary with high efficiency by dividing the unit module to control the transmission power in real time and reduce the burden on the VCO/PLL unit.

In addition, the present invention aims to provide a data/power receiving module terminal that passes a necessary frequency band and blocks unnecessary frequency bands while minimizing interference problems that may occur when power transmission and bidirectional communication are performed in the same band. There is this.

The present invention is a means for achieving the above object,

For effective energy management of a batteryless small-sized monitoring sensor that cannot supply power, it does not use BLE or IEE 802.15.4q (ULP), which causes additional power loss, and is wireless to enable bidirectional information transmission in the frequency band used for power transmission. To optimize transmission/reception, charging, data transmission rate and transmission error rate in the channel, perform downlink functions including random access channel, scheduling, and header construction, map to PHY, and maximize wireless RF power transmission efficiency Data is acquired while efficiently recognizing the position of the power data/power receiving module terminal using the coarse & fine beam scanning method and acquiring the power transmission channel by the reverse link through the adaptive beamforming control And a transmission module terminal providing power; Data and power characterized by including a data/power receiving module terminal that passes necessary frequency bands and blocks unnecessary frequency bands while minimizing interference problems that may occur when power transmission and bidirectional communication are performed in the same band. It provides a wireless transmission and reception system that simultaneously transmits.

The transmission module terminal of the present invention is used to derive an optimal method of transmitting and receiving, charging efficiency and data transmission error in a wireless channel. A transmitter controller that optimizes charging efficiency, data transmission rate and transmission error rate, performs downlink functions including random access channel, scheduling, and header construction, and includes a PHY/MAC mapping to a PHY; Synthesize frequencies while providing a wide range of continuous RF output ranges, oscillation frequency oscillation and phase comparison, and output the variable oscillation frequency by the generated voltage, and adjust the input waveform arbitrarily to transmit different output waveforms to the input waveform. A power/data transmitting unit that transmits power/data to amplify and transmit an output signal supplied through an ideal phase device so as to efficiently supply power to the load; An antenna connected to the power/data transmission unit to transmit data and power to minimize interference problems caused by power transmission and bidirectional communication in the same band, which are made of opposite polarization structures; And a data receiving device for removing very low power level and noise included in the power level, passing a required frequency band at a frequency, blocking unnecessary frequency bands, and receiving data transmitted from a data/power receiving module terminal ( Characterized in that it comprises a Data Receiving Unit.

The power supply/data transmission unit of the present invention provides a wide continuous RF output range, and compares the frequency, oscillation frequency oscillation, and phase of the input signal to synthesize the frequency to the generated voltage that generates a DC voltage proportional to the error. A voltage-controlled oscillator (VCO)/phase-locked loop (PLL) unit for outputting the oscillation frequency by varying; A phase shifter that arbitrarily adjusts the waveform input from the VCO/PLL unit to transmit different output waveforms to the input waveform; It is characterized in that it comprises a power amplifier (Power Amplifier) for amplifying and transmitting the output signal supplied through the phase shifter to efficiently supply power to the load.

The antenna is characterized in that it is made of a transmitter and CP array antenna that is connected to a power/data transmitter and transmits data and power.

The data receiving unit (Data Receiving Unit) of the present invention, the received power is low noise amplifier due to the effect of attenuation and noise, and a low noise amplifier to remove the noise included in the power level; A transmitting unit receiving antenna for simultaneously transmitting data and power applied through the power/data transmitting unit and receiving data transmitted from the data/power receiving module terminal; It is characterized in that it includes a filter to pass through the frequency band required at the frequency applied through the low-noise amplifier and cut off the unnecessary frequency band.

The data/power receiving module terminal of the present invention increases network uptime by performing predictive and adaptive initializing on data and power, receiving only necessary data and power, applying and receiving data, and applying data/power of power A receiving unit; RF Energy Receiving Unit configured in parallel or in series to minimize conduction loss or boost voltage, minimize static current, dynamic voltage frequency scaling, and supply a constant voltage; Optimization of charging efficiency, data transmission rate and transmission error rate, uplink including random access channel, scheduling, and header construction, transmission and reception of data signals, control and communication devices (Contril & Comm Unit); And it characterized in that it comprises a sensor block for receiving data and power.

The data/power receiving unit including the receiving antenna of the present invention performs predictive and adaptive initial actions on the data and power applied from the transmitting module terminal to increase network uptime and adapt to real-time fluctuations occurring in the network. An adaptive matching network that receives only necessary data and power by applying to the type splitter; An adaptive splitter that receives two or more of the transmitted signals and reflects a part and transmits the other part to output data and power as information; Information receiving the data applied from the adaptive splitter and applying the data to the control and communication device; It characterized in that it comprises a voltage applying unit for applying the power received from the transmission module terminal to the RF power receiving unit receives the power through the receiving antenna.

The RF energy receiving unit of the present invention receives 2.4 GHz input power and is configured in parallel or in series to maximize efficiency to minimize conduction loss or boost voltage to increase DC- An RF-DC converter applied to the DC converter; Minimize static current and implement dynamic voltage frequency scaling (DVFS) through the implementation of a digital buck controller so that the output of the RF rectifier can be used as input and power. A DC-DC converter that applies electric power to the management; It can supply a constant voltage regardless of process, temperature, and input voltage fluctuations over a wide input voltage range, and also has a characteristic of low drop voltage to operate at a low input voltage. It characterized in that it comprises a power management applied by ).

The present invention does not use BLE or IEE 802.15.4q (ULP) that causes additional power loss for effective energy management of a batteryless small-sized monitoring sensor that cannot supply power, and transmits information in both directions in the frequency band used for power transmission. It has the effect of transmitting possible data and power simultaneously.

The present invention, the biggest problem of wireless charging, the data/power receiving module terminal from the AP (Access Point) has a charging effect of 2 to 5 times that of the existing technology, so the operation of the data/power receiving module terminal It is possible to prevent a situation in which the power cannot be operated due to the problem of power.

The present invention has an effect of supplying a constant voltage while having a low drop voltage characteristic in order to be able to operate at a low input voltage regardless of variations in process, temperature and input voltage over a wide input voltage range.

1 is a block diagram showing a transmitting module terminal and a data/power receiving module terminal of a wireless transmission/reception system that simultaneously transmits data and power according to the present invention.
Figure 2 is a block diagram showing the configuration of a transmission module terminal of the SWIPT that simultaneously transmits data and power according to the present invention.
3 is a block diagram showing a data/power receiving module terminal of SWIPT that simultaneously transmits data and power according to the present invention.
4 is a block diagram showing the configuration of the RF-DC controller of the RF power receiver shown in FIG. 3;
FIG. 5 is a block diagram showing the DC-DC controller configuration of the RF power receiver shown in FIG. 3.
6 is a block diagram showing a power management configuration of the RF power receiver shown in FIG. 3;
FIG. 7 is a block diagram showing the configuration of a receiver controller of the control and communication device shown in FIG. 3;

Hereinafter, it should be noted that the technical terms used in the present invention are only used to describe specific embodiments, and are not intended to limit the present invention, and the technical terms used in the present invention have special meanings in the present invention. Unless defined, the present invention should be interpreted in a sense generally understood by those skilled in the art to which the present invention pertains, and should not be interpreted as an excessively comprehensive meaning or an excessively reduced meaning.

In addition, when the technical term used in the present invention is a wrong technical term that does not accurately represent the spirit of the present invention, it should be understood as being replaced by a technical term that can be correctly understood by those skilled in the art. In addition, the general terms used in the present invention should be interpreted as defined in the dictionary or in context before and after, and should not be interpreted as an excessively reduced meaning.

In addition, the singular expression used in the present invention includes a plurality of expressions, unless the context clearly indicates otherwise, for example, the terms "consisting of" or "comprising" include various components described in the invention, or It should not be construed as including all of the various steps, and some of the components or some steps may not be included, or it may be interpreted as further including additional components or steps.

Hereinafter, a wireless transmission/reception system for simultaneously transmitting data and power according to the present invention will be described in detail through the accompanying drawings.

A wireless transmission/reception system for simultaneously transmitting data and power according to the present invention will be described in detail with reference to FIGS. 1 to 7.

1 is a block diagram showing a transmitting module terminal and a data/power receiving module terminal of a wireless transmission/reception system that simultaneously transmits data and power according to the present invention.

1 is a view showing the overall configuration of a wireless transmission and reception system that simultaneously transmits data and power, and a wireless transmission and reception system that simultaneously transmits data and power according to the present invention is a transmission module terminal that simultaneously transmits data and power. It includes a data / power receiving module terminal 200 for receiving only the required frequency band while simultaneously receiving the data 100 and the power.

The transmission module terminal 100 is a frequency band used for power transmission without using BLE or IEE 802.15.4q (ULP) that causes additional power loss for effective energy management of a batteryless small monitoring sensor that cannot supply power. It is used to derive the optimal method of transmitting/receiving, charging efficiency and data transmission error in a wireless channel to enable bidirectional information transmission, optimizing charging efficiency, data transmission speed and transmission error rate, and building random access channels, scheduling, and headers. Performs the downlink functions including, mapping to the PHY, as well as obtaining the power transmission channel by the reverse link through adaptive beamforming control to maximize the efficiency of wireless RF power transmission, and calls & fines (Coarse & fine) It is characterized by providing data and power while efficiently recognizing the position of the power data/power receiving module terminal 200 using a beam scan method.

In addition, the data/power receiving module terminal 200 is characterized in that it passes necessary frequency bands and blocks unnecessary frequency bands while minimizing interference problems that may occur when power transmission and bidirectional communication are performed in the same band. .

The transmission module terminal 100 of SWIPT that simultaneously transmits data and power according to the present invention having the above-described features is made as shown in FIG. 2.

2 is a block diagram showing the configuration of a SWIPT transmission module terminal that simultaneously transmits data and power according to the present invention.

Referring to FIG. 2 in detail, the transmission module terminal 100 acquires and transmits a power transmission channel through reverse link training through adaptive beamforming control in order to maximize wireless RF power transmission efficiency. It is characterized by recognizing the location of the data/power receiving module terminal 200 that receives data and power by using a coarse & fine beam scanning method and simultaneously transmitting data and power.

The transmitting module terminal 100 includes a transmitter 110 including a PHY/MAC; It includes a power / data transmitting unit (Power / data Transmitting Unit) 120 for transmitting the power / data, a transmitting antenna 130 and a data receiving unit (Data Receiving Unit) 140.

The transmitting unit controller 110 including the PHY/MAC is used to derive an optimal method of transmitting and receiving, charging efficiency, and data transmission error in a wireless channel. Optimizes charging efficiency, data rate and transmission error rate, performs downlink functions including random access channel, scheduling, and header construction, and maps to PHY. The transmitter controller 110 is made of an MCU.

The power/data transmitting unit 120 provides a wide continuous RF output range while synthesizing frequencies, oscillation frequency oscillation and phase comparison, and varying the oscillation frequency by the generated voltage and outputting the input. The output waveform supplied through the phase shifter 122 is amplified to transmit power and data through the antenna 130 so that the output waveform supplied through the phase shifter 122 can be efficiently adjusted to transmit different output waveforms to the input waveform. do.

In addition, the power/data transmission unit 120 includes a voltage controlled oscillator (VCO)/phase-locked loop (PLL) unit 121, a phase shifter 122, and a power amplifier 123.

The VCO/PLL unit 121 provides a wide continuous RF output range, and the frequency, oscillation frequency oscillation, and phase of the input signal to synthesize frequencies are compared and oscillated by a voltage that generates a DC voltage proportional to the error. The frequency is variable and output to the phase shifter 122, and the phase shifter 122 arbitrarily adjusts the input waveform to send different output waveforms to the power amplifier 231 for the input waveform, and the power amplifier 231 is efficient In order to supply power to the load, the output signal supplied through the phase shifter 122 is amplified and transmitted through an antenna.

The transmitting antenna 130 is made of opposite polarization structures and is connected to the power/data transmission unit 120 to transmit power and data to minimize interference problems caused when power transmission and bidirectional communication are performed in the same band. It is composed of a transmitter CP array antenna.

In addition, the transmitting antenna 130 recognizes the location of the data/power receiving module terminal 200 by utilizing a coarse & fine beam scanning method to maximize power transmission efficiency through adaptive beamforming control. , Acquire a power transmission channel through reverse link training.

In the reverse link training, the data/power reception module terminal 200 transmits a pilot signal to the transmission module terminal 100 to extract feedback information, wherein the data/power reception module terminal 200 It is easy in many cases.

Recognizing the receiving position by the coarse & fine method, largely setting the scan area to check the position of the data/power receiving module terminal 200, and the data/power receiving module terminal 200 Scan the area again to confirm the location.

When the transmission module terminal 100 transmits a signal combining the phases of the received signal through the antenna 130, the transmission/reception module terminal 200 makes the phase of the signal received by the data/power reception module terminal 200 '0', At this time, the transmission of the data is not directed to a single point, but a signal is transmitted to each of the data/power receiving module terminals 200, and the phase is set to '0' in the data/power receiving module terminal 200. Make sure to receive maximum power.

The data receiving unit 140 removes noise included in a very low power level and power level, passes a required frequency band at a frequency, blocks unwanted frequency bands, and blocks a data/power receiving module. Data transmitted from the terminal 200 is received.

The data receiving device 140 includes a low noise amplifier (LNA) 141, a filter 142 passing through a required frequency band and blocking unnecessary frequency bands, and a receiving antenna 143 of the transmitter.

The low-noise amplifier 141 removes very low power level and noise included in the power level due to the effect of attenuation and noise of the received power, and the filter 142 is applied through the power/data transmission unit 120 At a frequency applied through the low-noise amplifier 141 along with power, a required frequency band is passed and an unnecessary frequency band is blocked, and the transmitting unit receiving antenna 143 transmits and transmits data/power receiving module terminal 200 Data is received and a data signal is applied to the low noise amplifier 141.

In addition, the data/power receiving module terminal of the wireless transmission/reception system for simultaneously transmitting data and power according to the present invention is made as shown in FIGS. 3 to 7.

3 is a block diagram showing a data/power receiving module terminal of a SWIPT that simultaneously transmits data and power according to the present invention, and FIG. 4 is a block diagram showing a configuration of an RF-DC controller of the RF power receiving unit shown in FIG. 3 , FIG. 5 is a block diagram showing the DC-DC controller configuration of the RF power receiver shown in FIG. 3, FIG. 6 is a block diagram showing the power management configuration of the RF power receiver shown in FIG. 3, and FIG. 7 is FIG. 3. It is a block diagram showing the configuration of the receiving unit controller of the control and communication device shown in.

The configuration of the data/power receiving module terminal according to the present invention will be described in detail with reference to FIGS. 3 to 7.

The data/power receiving module terminal 200 according to the present invention includes a data/power receiving unit 210, an RF power receiving unit 220, and control and communication including a receiving antenna as shown in FIG. 3. It includes a device (Contril & Comm Unit) 230 and a sensor block 240.

The data/power receiving unit 210 including the receiving antenna includes an adaptive matching network 211, an adaptive splitter 212, information 213, and a voltage applying unit ( 214).

The adaptive matching network 211 performs predictive and adaptive actions on data and power applied from the transmission module terminal 100 to increase network uptime and adapt to real-time fluctuations occurring in the network, and adaptive splitter It is applied to (212) so that only necessary data and power can be received.

The adaptive splitter 212 receives two or more of the transmitted signals, reflects a part, and transmits the other, and outputs data and power to the information 213.

The information 213 receives data applied from the adaptive splitter 212 and applies data to the control and communication device 230.

The voltage applying unit 214 receives power applied from the transmission module terminal 100 through a receiving antenna, and applies the received power to the RF power receiving unit 220.

The RF power receiving unit (RF Energy Receiving Unit) 220 is an RF-DC converter (RF-DC Converter) 221, a DC-DC converter (DC-DC Converter) 222 and a power management (Power Management) (223) ). The configuration is configured as shown in FIG. 4.

The RF-DC converter 221 receives 2.4 GHz input power and is configured in parallel or in series to maximize efficiency to minimize conduction loss or boost voltage to increase the DC-DC converter 222. Apply as.

The DC-DC converter 222 minimizes static current and implements dynamic voltage frequency scaling through the implementation of a digital buck controller so that the output of the RF rectifier can be used as input and power. scaling: DVFS), and power is applied to the power management 223.

The power management 223 allows a constant voltage to be supplied regardless of process, temperature and input voltage fluctuations over a wide input voltage range, and also features of a low drop voltage to operate at a low input voltage. It is applied to the sensor block 240.

The control and communication device (Contril & Comm Unit) 230 includes an information receiving unit (231) and a receiver controller (MCU) 232 including a PHY/MAC and an information transmitting unit. (233).

The information receiving device 231 generates a specific oscillation frequency by converting alternating current into direct current to obtain an output by directly modulating the current applied from the information 213 at a high speed as shown in FIG. 7 to generate a rectified and basic band signal. The LC oscillator (231-1), an envelope detector (231-2), and a baseband amplifier (231-3) are used to apply the signal to the receiver controller 232. Includes.

The LC oscillator (231-1) uses a coil and a condenser, generates sinusoidal alternating current with a transistor, applies a signal to an elevating director by designating an oscillation frequency, and the elevating director (Envelope) detector) (231-2) detects the envelope of the received signal by demodulation method, rectifies and reproduces the envelope through the forward and reverse filters to apply to the baseband amplifier, and the baseband amplifier (231-3) is By amplifying only a specific frequency band to the signal applied from the elevator director, the baseband signal is transmitted to the receiver controller 232.

The receiving unit controller (MCU) 232 including the PHY/MAC controls the PHY/MAC, and the PHY is used to derive an optimal method of transmission/reception, charging efficiency, and data transmission error in a wireless channel. Optimizes charging efficiency, data rate and transmission error rate, and the MAC performs uplink functions including random access channel, scheduling, and header construction, and is mapped to the PHY.

In addition, PHY/MAC enables optimal modulation/demodulation for low power consumption in the SWIPT system.

The information transmission device 233 transmits the data signal applied from the sensor block 240 to the information 213, and the information 213 applies data to the transmission module terminal 100 again.

The information receiving device 231 and the information transmitting device 233 receive data by switching or transmit data.

As described above, the present invention acquires a power transmission channel by reverse link training and adaptive beamforming and coarse & fine beam scanning through adaptive beamforming control to maximize wireless RF power transmission efficiency. Recognizes the location of the data/power receiving module terminal 200 that receives data and power by utilizing the data and transmits data and power at the same time. Data and power capable of transmitting information in both directions are simultaneously transmitted in the frequency band used for power transmission without using BLE or IEE 802.15.4q (ULP), which causes power loss.

In addition, the present invention has the advantage of being able to supply a constant voltage while having a low drop voltage characteristic in order to be able to operate at a low input voltage regardless of variations in process, temperature and input voltage over a wide input voltage range.

The power and information transmission method according to the above-described embodiments can be effectively applied to low-power/low-cost Internet of Things (IoT) sensors, wearable devices, biosensors, and the like. At the same time, wireless power can be efficiently transmitted by matching filtering according to channel state information, and data can be restored without channel estimation at the data/power receiving module terminal, making it suitable for low-power/low-cost environments. have.

In order to help the understanding of the present invention, it has been described with reference to the embodiment shown in the drawings, but this is an embodiment for implementation, and is merely exemplary, and those having ordinary knowledge in the field, various modifications and equivalents therefrom It will be understood that other embodiments are possible. Therefore, the true technical protection scope of the present invention should be defined by the appended claims.

100: transmitting module terminal 110: transmitting unit controller
120 Power supply/data transmission unit 121: VCO/PLL unit
122: ideal phase 123: power amplifier
130: transmitting antenna 140: data receiving device
141: low-noise amplifier 142: filter
143: transmitting antenna antenna 200: data / power receiving module terminal
210: data and power receiving unit 211: adaptive matching network
212: adaptive splitter 213: information
214: voltage applying unit 220: RF power receiving unit
221: RF-DC converter 222: DC-DC converter
223: power management 230: control and communication device
231: information receiving device 231-1: L oscillator
231-2: Elvlov Director 231-3: Basic Band Amplifier
232: receiver controller 233: information transmission device
240: sensor block

Claims (5)

It is used to derive the optimal method of transmission/reception, charging efficiency, and data transmission error in wireless channels. A transmitter controller 110 including a PHY/MAC that optimizes charging efficiency, data rate and transmission error rate, performs downlink functions including random access channel, scheduling, and header construction, and maps to a PHY, and a wide range Synthesis of frequencies while providing continuous RF output range, oscillation frequency oscillation and phase comparison, oscillation frequency is varied and output by the generated voltage, and the input waveform is arbitrarily adjusted to transmit different output waveforms to the input waveform. Power/data transmitting unit (120) for transmitting power/data by amplifying and transmitting the output signal supplied through the phase shifter so as to supply power to the load. A transmission antenna 130 connected to a power/data transmission unit to transmit data and power so as to minimize interference problems caused when transmission and bidirectional communication are performed in the same band; And a data receiving device for removing very low power level and noise included in the power level, passing a required frequency band at a frequency, blocking unnecessary frequency bands, and receiving data transmitted from a data/power receiving module terminal ( The transmission module terminal 100 including a Data Receiving Unit (140);
Increases network uptime by performing predictive and adaptive start-up on data and power, receiving only the required data and power, applying and receiving data, and applying data/power receiving unit 210 to apply power in parallel or in series By reducing the conduction loss (conduction loss) or boosting the voltage (voltage), minimizing the static current, dynamic voltage frequency scaling, RF power receiving unit (RF Energy Receiving Unit) 220 for supplying a constant voltage, and charging efficiency, Optimize data transmission rate and transmission error rate, uplink including random access channel, scheduling, and header construction, transmission and reception of data signals, control and communication device (Contril & Comm Unit) 230, and reception of data and power The data/power receiving module terminal 200 including the sensor block 240;
Wireless transmission and reception system that transmits data and power at the same time, characterized in that consisting of. According to claim 1,
The power / data transmission unit 120,
VCO that provides a wide range of continuous RF output ranges and outputs by varying the oscillation frequency by the generated voltage that generates a DC voltage proportional to the error by comparing the frequency, oscillation frequency, oscillation, and phase of the input signal to synthesize frequencies. a (voltage controlled oscillator)/PLL (phase-locked loop) unit 121;
A phase shifter 122 that arbitrarily adjusts a waveform input from the VCO/PLL unit 121 to transmit different output waveforms to the input waveform;
A power amplifier 123 for amplifying and transmitting an output signal supplied through the phase shifter 122 to efficiently supply power to the load;
Wireless transmission and reception system for transmitting data and power at the same time comprising a. According to claim 1,
The data receiving unit (Data Receiving Unit) 140,
The received power includes a very low power level due to the effects of attenuation and noise, and a low noise amplifier 141 that removes noise included in the power level;
A filter 142 for passing the required frequency band at the frequency applied through the low noise amplifier 141 and blocking the unnecessary frequency band;
A transmitting unit receiving antenna 143 for simultaneously receiving data and power transmitted through the power/data transmitting unit 120 and receiving data transmitted from the data/power receiving module terminal;
Wireless transmission and reception system for transmitting data and power at the same time comprising a. According to claim 1,
The data/power receiving unit 210 including the receiving antenna,
Predictive and adaptive start-up is performed on data and power applied from the transmission module terminal 100 to increase network uptime, adapt to real-time fluctuations occurring in the network, and apply by adaptive splitter 212. An adaptive matching network 211 that receives only data and power;
An adaptive splitter 212 that receives two or more of the transmitted signals and partially reflects them and transmits other portions to output data and power to the information 213;
An information 213 for receiving data applied from the adaptive splitter 212 and applying data to the control and communication device 230;
A voltage application unit 214 for applying the power received from the transmission module terminal 100 to the RF power receiving unit 220 through the reception antenna;
Wireless transmission and reception system for transmitting data and power at the same time comprising a. According to claim 1,
The RF power receiving unit (RF Energy Receiving Unit) 220,
RF-DC converter 221 that receives 2.4 GHz input power and configures it in parallel or in series to maximize efficiency to minimize conduction loss or boost voltage to apply to DC-DC converter 222 )Wow;
Minimize static current and implement dynamic voltage frequency scaling (DVFS) through the implementation of a digital buck controller so that the output of the RF rectifier can be used as input and power. A DC-DC converter 222 for applying electric power to the management 223;
It can supply a constant voltage regardless of process, temperature and input voltage fluctuations over a wide input voltage range, and also has a characteristic of low drop voltage to operate at a low input voltage. ), the power management 223 applied;
Wireless transmission and reception system for transmitting data and power at the same time comprising a.

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