WO2021217650A1

WO2021217650A1 - Signal processing method and apparatus based on antenna array

Info

Publication number: WO2021217650A1
Application number: PCT/CN2020/088485
Authority: WO
Inventors: 黄韬; 袁庭球; 姜伟鹏
Original assignee: 华为技术有限公司
Priority date: 2020-04-30
Filing date: 2020-04-30
Publication date: 2021-11-04
Also published as: CN114747114A

Abstract

The present application provides a signal processing method and apparatus based on an antenna array. The antenna array comprises at least three first antenna units and at least one second antenna unit. The at least three first antenna units are not aligned. For a detection signal sent by a terminal antenna, according to amplitude detection values of the detection signals received by the at least three first antenna units and a first relationship model, first position information of the terminal antenna is determined, so that each second antenna unit can be controlled, according to the first position information, to send a charging signal for charging a terminal device where the terminal antenna is. Energy convergence can be achieved, and it is unnecessary to measure and monitor the detection signals received by the antenna units in the antenna array, so as to reduce the costs. The first relationship model is used for indicating a relationship between the amplitude of an electromagnetic wave received by each antenna unit and position information of a transmitting antenna of the electromagnetic wave.

Description

Signal processing method and device based on antenna array

Technical field

This application relates to the field of antennas, in particular to signal processing methods and devices based on antenna arrays.

Background technique

Microwave wireless power transfer (MPT) technology has obvious advantages in coverage, multiple terminals, and mobility support. Through beamforming technology, the efficiency of charging can be improved.

In order to achieve energy focusing and beamforming, the terminal device at the energy receiving end may send a detection signal, and the antenna array at the energy transmitting end detects the phase of the detection signal received by each antenna element in the antenna array. According to the detected phase of each antenna unit, the antenna array is controlled to send a charging signal to charge the terminal device, so that the frequency of the signal sent by each antenna unit in the charging signal is equal to the frequency of the detection signal. The phase difference therebetween is equal to the phase difference of the detection signals received by the multiple antenna units, and the positive and negative are opposite.

To realize the detection of the phase of the detection signal for each antenna unit, it is necessary to set a phase detector for each antenna unit, and the cost is relatively high.

Summary of the invention

The present application provides a signal processing method and device based on an antenna array, which does not need to detect the detection signal received by each antenna element in the antenna array, so that the cost can be reduced.

In a first aspect, a signal processing method based on an antenna array is provided, the antenna array includes at least three first antenna elements and at least one second antenna element, and the positions of the at least three first antenna elements are not collinear; The method includes: determining the first position information of the terminal antenna according to the first amplitude information and a first relationship model, and the first relationship model is used to indicate the relationship between the amplitude of the electromagnetic wave received by each antenna unit and the position information. Relationship, the first amplitude information is used to indicate the amplitude obtained by detecting the detection signal received by each of the at least three first antenna elements, and the detection signal is an electromagnetic wave sent by the terminal antenna, so The position information is used to indicate the position of the electromagnetic wave emitting end, and the terminal antenna is an antenna outside the antenna array; according to the first position information, each second antenna unit is controlled to send a charging signal, and each charging signal It is used to charge the terminal device where the terminal antenna is located.

According to the amplitude of the detection signal received by the multiple antenna elements that are not collinear in the antenna array, the first position information of the terminal antenna that sends the detection signal can be determined, so as to determine the transmission of each second antenna element according to the first position information of the terminal antenna. The charging signal for the terminal device where the terminal antenna is located does not need to detect the phase of the detection signal received by each unit in the antenna array, which can reduce the number of devices used to detect the detection signal received by the antenna unit and reduce the cost .

When the antenna array includes a plurality of second antenna elements, the frequency of the charging signal sent by each antenna element is equal. The frequency of each charging signal can be a preset frequency.

With reference to the first aspect, in some possible implementation manners, each charging signal has the same frequency as the detection signal; the controlling each second antenna unit to send a charging signal according to the first position information includes : Determine the first phase information according to the distance between the position indicated by the first position information and each second antenna element of the at least one second antenna element, and a second relationship model Is used to indicate the phase of the detection signal received by each of the second antenna units, and the second relationship model is used to indicate the relationship between the distance of electromagnetic wave propagation and the phase of the electromagnetic wave; according to the first phase information, Each of the second antenna units is controlled to send a charging signal, and the difference between the phases of the charging signals sent by each of the second antenna units and the first phase information indicate that each of the second antenna units corresponds to The magnitude of the difference between the phases is equal, but the sign is opposite.

The frequency of the charging signal and the detection signal are equal, which improves the accuracy of the energy focusing of the charging signal and improves the charging efficiency.

According to the first position information of the terminal antenna, the first phase information can be determined, and the first phase information is used to indicate the phase of the detection signal received by each second antenna unit. It can be achieved by making the difference between the phase of the charging signal sent by each second antenna unit equal to the difference between the phase corresponding to each second antenna unit indicated by the first phase information, and the opposite of positive and negative. Energy focus, improve charging efficiency.

It should be understood that the difference between the phase of the charging signal sent by each antenna unit (including the first antenna unit and the second antenna unit) in the antenna array may be the difference between the phase of the detection signal received by each antenna unit in the antenna array The value is opposite to achieve energy focus and improve charging efficiency.

With reference to the first aspect, in some possible implementation manners, the controlling each of the second antenna units to send a charging signal according to the first position information includes: according to the first position information, and the first A relationship model to determine second amplitude information, where the second amplitude information is used to indicate the amplitude of the detection signal received by each second antenna unit in the at least one second antenna unit, and the Information, controlling each second antenna unit to send a charging signal, including: controlling each second antenna unit to send a charging signal according to the first phase information and the second amplitude information, and each second antenna The ratio between the amplitudes of the charging signals sent by the units is equal to the ratio between the amplitudes corresponding to each second antenna unit indicated by the second amplitude information.

The ratio between the amplitudes of the charging signals sent by each second antenna unit in the charging signal is equal to the ratio between the amplitudes corresponding to each second antenna unit indicated by the second amplitude information, and the charging efficiency can be improved.

It should be understood that, in the charging signal, the amplitude of the charging signal sent by each antenna unit of the antenna array can be equal to the ratio of the amplitude of the detection signal received by each antenna unit, which can improve the charging efficiency.

With reference to the first aspect, in some possible implementation manners, the second relationship model and the distance between the position indicated by the first position information and each first antenna element are used to determine the second phase information. The two-phase information is used to indicate the phase of the detection signal received by each first antenna unit, and the second relationship model is used to indicate the relationship between the electromagnetic wave propagation distance and the phase of the electromagnetic wave; Position information, controlling each second antenna unit to send a charging signal, including: when for each first antenna unit, the difference between the phase indicated by the second phase information and the phase indicated by the third phase information is less than When the preset value is set, each second antenna unit is controlled to send a charging signal according to the first position information, and the third phase information is obtained by detecting the phase of the detection signal received by each first antenna unit.

Since the propagation paths of the detection signals received by each first antenna unit are different, it may be that the phase detection value and the calculated value of the detection signal received by the first antenna unit may not be equal, so that the determined first position information of the terminal antenna is different. precise. When the detected value of the phase of the detection signal received by the first antenna unit is equal to the calculated value, the first position information of the terminal antenna is more accurate, by comparing the detected value of the phase of the detected signal received by the first antenna unit with the calculated value , Can improve the charging efficiency.

In a second aspect, a signal processing device based on an antenna array is provided. The antenna array includes at least three first antenna elements and at least one second antenna element. The positions of the at least three first antenna elements are not collinear. The device includes: a determination module and a control module. The determining module is configured to determine the first position information of the terminal antenna according to the first amplitude information and the first relationship model, and the first relationship model is used to indicate the difference between the amplitude of the electromagnetic wave received by each antenna unit and the position information. The position information is used to indicate the position of the electromagnetic wave transmitting antenna, and the first amplitude information is to detect the amplitude of the detection signal received by each of the at least three first antenna units It is obtained that the detection signal is an electromagnetic wave sent by a terminal antenna, and the terminal antenna is an antenna outside the antenna array. The control module is configured to, according to the first position information, control each of the second antenna units to send a charging signal, and each charging signal is used to charge the terminal device where the terminal antenna is located.

With reference to the second aspect, in some possible implementation manners, the frequency of each charging signal is equal to the frequency of the detection signal. The control module is configured to: determine the first phase information according to the distance between the position indicated by the first position information and each of the at least one second antenna unit, and a second relationship model, The first phase information is used to indicate the phase of the detection signal received by each of the second antenna units, and the second relationship model is used to indicate the relationship between the electromagnetic wave propagation distance and the phase of the electromagnetic wave. According to the first phase information, each second antenna unit is controlled to send a charging signal, and the difference between the phases of the charging signals sent by each second antenna unit and the first phase information indicate each The magnitude of the difference between the phases corresponding to the second antenna unit is equal, and the positive and negative are opposite.

With reference to the second aspect, in some possible implementation manners, the control module is further configured to: determine second amplitude information according to the first position information and the first relationship model, and the second amplitude information is used To indicate the amplitude of the detection signal received by each of the at least one second antenna unit. The control module is further configured to: according to the first phase information and the second amplitude information, control each second antenna unit to send a charging signal, and the amplitude of the charging signal sent by each second antenna unit is between The ratio of is equal to the ratio between the amplitudes corresponding to each second antenna unit indicated by the second amplitude information.

With reference to the second aspect, in some possible implementation manners, the determining module is further configured to use a second relationship model and the distance between the position indicated by the first position information and each first antenna unit to determine The second phase information, the second phase information is used to indicate the phase of the detection signal received by each first antenna unit, and the second relationship model is used to indicate the relationship between the electromagnetic wave propagation distance and the electromagnetic wave phase . The control module is specifically configured to: for each first antenna unit, the difference between the phase indicated by the second phase information and the phase indicated by the third phase information is less than a preset value, according to the first antenna unit. The position information controls each second antenna unit to send the charging signal, and the third phase information is used to indicate the phase obtained by detecting the detection signal received by each first antenna unit.

In a third aspect, a signal processing device based on an antenna array is provided, which includes a memory and a processor. The memory is used to store program instructions, and the processor is used to execute the program instructions to perform the method described in the first aspect.

In a fourth aspect, an electronic device is provided, which includes the antenna array of the second aspect or the third aspect and a signal processing device based on the antenna array.

In a fifth aspect, a computer program storage medium is provided, wherein the computer program storage medium has program instructions, and when the program instructions are executed by a processor, the processor executes the aforementioned antenna array-based Signal processing method.

In a sixth aspect, there is provided a chip system, wherein the chip system includes at least one processor, and when a program instruction is executed in the at least one processor, the at least one processor is caused to execute the aforementioned Signal processing method based on antenna array.

Description of the drawings

Fig. 1 is a schematic structural diagram of an antenna array for microwave wireless charging.

Fig. 2 is a signal processing method based on an antenna array provided by an embodiment of the present application.

Fig. 3 is a schematic diagram of a propagation path of a detection signal.

Fig. 4 is a schematic diagram of another propagation path of the detection signal.

FIG. 5 is a schematic structural diagram of an antenna array provided by an embodiment of the present application.

Fig. 6 is a schematic structural diagram of a processing unit provided by an embodiment of the present application.

Fig. 7 is a schematic structural diagram of a processing unit provided by an embodiment of the present application.

FIG. 8 is a schematic flowchart of a signal processing method based on an antenna array provided by an embodiment of the present application.

FIG. 9 is a signal processing device based on an antenna array provided by an embodiment of the present application.

FIG. 10 is another signal processing device based on an antenna array provided by an embodiment of the present application.

Detailed ways

The technical solution in this application will be described below in conjunction with the accompanying drawings.

Wireless power transfer (WPT) technology can be used to realize wireless power supply for electronic devices, which can improve the convenience of charging. Wireless charging can be achieved through magnetic induction charging, magnetic resonance charging, or microwave wireless charging technology. The transmission efficiency of magnetic induction or magnetic resonance technology is high, but the effective charging distance is very short, usually in the millimeter range. Magnetic induction or magnetic resonance technology has high requirements for the relative position and attitude of the receiving and transmitting coils, which greatly limits the convenience and scope of charging, and cannot support large-scale, multi-terminal, and mobile charging.

Microwave wireless power transfer (MPT) technology has obvious advantages in coverage, multiple terminals, and mobility support. However, microwave radiation is generally omnidirectional, energy is difficult to focus, and effective charging power is low. Microwave wireless energy transmission generally uses multi-antenna technology for energy transmission, and allocates resources through the precise location of target users. Through beamforming technology, the amplitude and phase (ie, amplitude and phase) of electromagnetic waves are regulated, and energy focusing can be achieved by using the principle of interference. By directing the electromagnetic wave guide to the target terminal device, the received signal power can be increased, so that the charging efficiency can be improved.

The beamforming technology is used to control the relative phase and amplitude of the electromagnetic waves emitted by each antenna unit in the antenna array, so that the electromagnetic wave radiation gain is stronger at the location where the target terminal device is located, while the electromagnetic wave radiation gain is weaker at other locations , It reduces the interference to other receivers and improves the energy transmission efficiency of electromagnetic waves.

Terminal devices can be mobile phones, tablets, wearable devices, vehicle-mounted devices, augmented reality (AR)/virtual reality (VR) devices, notebook computers, ultra-mobile personal computers (UMPCs) ), netbooks, personal digital assistants (personal digital assistants, PDAs) and other electronic devices, the embodiments of this application do not impose any restrictions on the specific types of terminal devices.

The antenna array includes a plurality of antenna units 110. Each antenna unit 110 in the antenna array is used to send a charging signal, and the charging signal supplies power to the terminal device to be charged in the form of wireless electromagnetic waves. The device to be charged is the energy receiving end, and the device where the antenna array is located is the energy transmitting end.

Before the antenna array charges the terminal device, it can receive the detection signal sent by the terminal device. The detection signal propagates in space in the form of electromagnetic waves.

Each antenna unit 110 is also used to receive detection signals. The antenna unit 110 and the processing unit 120 have a one-to-one correspondence. Each processing unit 120 includes a phase shifter 121 and a phase detector 122.

The phase detector 122 is used to detect the phase of electromagnetic waves. Taking the phase of a specific signal as a reference, the phase detector 122 can determine the phase difference between the input signal and the specific signal. The phase detector 122 is used to determine the phase of the electromagnetic wave received by the antenna unit 110 corresponding to the phase detector. The phase detector 122 may also be used to determine the amplitude of the electromagnetic wave received by the antenna unit 110 corresponding to the phase detector.

With the phase detector 122, the amplitude and phase of the detection signal received by each antenna unit 110 can be detected, and the amplitude and phase can be sent to the control device.

The control device controls each phase shifter 121 according to the amplitude and phase sent by the plurality of phase detectors 122 so that the phase of the charging signal sent by each antenna unit 110 is opposite to the phase of the charging signal received by the antenna 110. Therefore, the charging signal sent by each antenna unit 110 arrives at the terminal device in the same phase, that is, the electromagnetic waves sent by multiple antenna units 110 are aligned in phase at the location of the terminal device, so as to improve the antenna array 100 at the location of the terminal device. Gain.

In other words, the electromagnetic waves sent by each antenna unit 110 have the same phase and strong energy at the position where the terminal device is located, while in other positions, due to the difference in the phase of the electromagnetic waves, the energy is weak, and energy focusing is achieved.

The terminal device sends a detection signal. In order to determine the amplitude of the detection signal received by each antenna unit, it is necessary to detect the detection signal received by each antenna unit. Setting a phase detector corresponding to the antenna unit for each antenna unit increases the complexity, volume and manufacturing cost of the energy transmission end.

In order to solve the foregoing problem, an embodiment of the present application provides a method for controlling an antenna array.

The antenna array includes at least three first antenna elements and at least one second antenna element, and the at least three first antenna elements are not collinear.

The collection of points on a line is considered to be collinear. At least three first antenna units are not collinear, that is, there is a first antenna unit located outside the straight line connecting the other two first antenna units.

Before step S810, the terminal antenna transmits a detection signal. The detection signal propagates in the air and other media in the form of electromagnetic waves. The terminal antenna is located in the terminal device and is used to send and receive electromagnetic waves. The terminal antenna is an antenna outside the antenna array.

The detection signal sent by the terminal antenna can be expressed as: A ₀ cos(2πf ₀ t), where A ₀ represents the amplitude of the detection signal sent by the terminal antenna, and f ₀ represents the frequency of the detection signal.

In step S810, determine the first position information of the terminal antenna according to the first amplitude information and the first relationship model, where the first relationship model is used to indicate the relationship between the amplitude of the electromagnetic wave received by each antenna unit and the position information .

The location information is used to indicate the location of the electromagnetic wave sending end. The electromagnetic wave transmitting terminal refers to an antenna or antenna unit that transmits electromagnetic waves, and can also be called an electromagnetic wave transmitting antenna.

The first amplitude information is used to indicate that the amplitudes of the detection signals received by the at least three first antenna units are obtained by detection.

The amplitude of the detection signal received by each first antenna unit may be detected to determine the first amplitude information. For example, the first antenna unit may have a one-to-one correspondence with the detection unit, and each detection unit is used to detect the amplitude of the detection signal received by the first antenna unit corresponding to the detection unit. The detection unit may be, for example, a phase detector or the like.

The amplitude of the detection signal can also be referred to as the amplitude of the detection signal.

Before step S810, the first relationship model may be determined.

The square of the amplitude of the electromagnetic wave is proportional to the power of the electromagnetic wave, and the power of the electromagnetic wave is inversely proportional to the square of the electromagnetic wave transmission distance.

Electromagnetic waves are oscillating particle waves emitted in space derived from electric and magnetic fields that are in the same direction and perpendicular to each other. They are electromagnetic fields that propagate in the form of waves and have wave-particle duality. The direction of the electric field, the direction of the magnetic field, and the direction of propagation accompanied by electromagnetic waves are perpendicular to each other, so electromagnetic waves are transverse waves.

The amplitude of the electromagnetic wave can be the amplitude of the electric field strength or the amplitude of the magnetic field strength. The relationship between the electric field intensity E (units can be volts per meter (V/m)) of electromagnetic waves and the power P (units can be watts (W)) of electromagnetic waves can be expressed as:

Among them, Z is the free space impedance (units can be ohms (Ω)), Z is a constant, and S is the equivalent area of the antenna (units can be square meters (m ² )). For different antennas or antenna units, S can be the same or different.

The first model may represent a mathematical model of the relationship between the position information of the amplitude A _r of the antenna element is an antenna unit receiving the detection signal.

The transmission loss formula of electromagnetic waves in free space can be expressed as:

Among them, P _r represents the power of the electromagnetic wave received by the electromagnetic wave receiving end, P _t represents the power of the electromagnetic wave sent by the electromagnetic wave transmitting end, G _r (θ _r , φ _r ) represents the pattern function of the antenna unit at the electromagnetic wave receiving end, G _t (θ _t , φ _t ) represents the directional pattern function of the antenna at the electromagnetic wave transmitting end, λ is the wavelength of the electromagnetic wave, and R represents the distance between the antenna unit at the electromagnetic wave receiving end and the antenna at the electromagnetic wave transmitting end. The antenna pattern function is used to express the antenna gain at the corresponding angle relative to the omnidirectional equal-power radiation antenna.

_{The power P r} of the electromagnetic wave received by the electromagnetic wave receiving end can be expressed as:

Among them, _Er is the amplitude of the electric field intensity of the electromagnetic wave received by the electromagnetic wave receiving end, and S _r is the equivalent area of the antenna at the electromagnetic wave receiving end.

_{The power P t} of the electromagnetic wave sent by the electromagnetic wave sending end can be expressed as:

Wherein the amplitude of the electric field strength E _t is the electromagnetic waves sent by a transmitter, S _t of the antenna, an electromagnetic wave transmitting equivalent area.

The electromagnetic wave propagates in the medium, and the wavelength λ can be expressed as

Among them, the electromagnetic wave propagation speed

f is the frequency of electromagnetic waves, ε is the dielectric constant of the medium, and μ is the magnetic permeability of the medium. In general, air is the medium through which the detection signal propagates.

Therefore, in the radiation range of the antenna, when the gain of the antenna element in the antenna array and the gain of the terminal antenna are both constant, for a specific detection signal, the amplitude of the detection signal received by the antenna element T1, A _T1, and the antenna element and The distance R between the terminal antennas is inversely proportional, that is

Among them, the parameter k ₁ is a constant.

Before step S810, the gain of the antenna unit, the gain of the gain detection signal of the terminal antenna, the frequency of the detection signal, and the amplitude (or power) of the detection signal when the terminal antenna sends the detection signal can be obtained, so as to determine the parameter k ₁ .

For example, the power transmission device where the antenna array is located can communicate with the terminal device to receive the gain of the terminal antenna's gain detection signal sent by the terminal device, the frequency of the detection signal, and the amplitude (or power) of the detection signal when the terminal antenna sends the detection signal. ). _{After that, the parameter k 1 is} determined according to the above-mentioned information received and the saved gain of the antenna unit.

Or, the power transmission device where the antenna array is located charges a specific terminal device, and the power transmission device can store the gain of the terminal antenna's gain detection signal, the frequency of the detection signal, and the amplitude of the detection signal when the terminal antenna sends the detection signal (or Power) one or more. Alternatively, the energy transmission terminal device where the antenna array is located stores the parameter k ₁ corresponding to the terminal antenna.

Within the radiation range of the antenna, the gain of the antenna unit in the antenna array is related to the elevation angle and/or azimuth angle, and when the gain of the terminal antenna is constant, for a specific detection signal, the detection signal received by the antenna unit The relationship between the amplitude A _T1 and the distance R between the antenna unit and the terminal antenna can be expressed as

Among them, k ₂ is a constant, G ₁ () represents the directional pattern function of the antenna elements in the antenna array, and the elevation angle θ ₁ and the azimuth angle φ ₁ represent the direction of the terminal antenna in G _{1 ().}

In the radiation range of the antenna, the gain of the antenna element in the antenna array is constant, and the gain of the terminal antenna is related to the elevation angle and/or azimuth angle. For a specific detection signal, the detection signal received by the antenna element is The relationship between the amplitude A _T1 and the distance R between the antenna unit and the terminal antenna can be expressed as

Among them, k ₃ is a constant, G ₂ () represents the pattern function of the terminal antenna, and the elevation angle θ ₂ and the azimuth angle φ ₂ represent the direction of the terminal antenna in G _{2 ().}

Of course, the gain of the antenna unit in the antenna array and the gain of the terminal antenna may all be related to the elevation angle and/or the azimuth angle.

The distance R between the antenna unit and the terminal antenna, the azimuth angle θ ₁ and the elevation angle φ _{1 are} related to the relative position of the terminal antenna and the antenna unit. Taking the direction of the vertical antenna array as the z axis, a Cartesian coordinate system is established. The coordinates of the terminal antenna can be expressed as A(x _t , y _t , z _t ), and the coordinates of the antenna unit can be expressed as B(x, y, z ), the distance between the terminal antenna and the antenna unit B (x, y, z) can be expressed as

The pitch angle θ ₁ can be expressed as

Among them, arctan() represents the arctangent function.

The azimuth angle φ ₁ can be expressed as

Therefore, when the gain of the terminal antenna is constant, according to the coordinates of each first antenna element, the amplitude of the detection signal received by each first antenna element, and the amplitude of the detection signal received by the _{antenna element Ar} and the antenna element The relationship between the distance R between the terminal antenna and the terminal antenna can determine the first position information of the terminal antenna.

The elevation angle θ ₂ and the azimuth angle φ _{2 are not} only related to the relative position of the terminal antenna and the antenna unit, but also related to the angle Δθ, the reference direction of the direction angle in the pattern function of the terminal antenna and the pattern function of the antenna unit in the antenna array. The pitch angle is related to the angle Δφ of the reference direction. Δθ=θ ₁ -θ ₂ , Δφ=φ ₁ -φ ₂ .

Therefore, when the gain of the terminal antenna is not a constant, but a function related to the elevation angle and/or the azimuth angle, it can be based on the coordinates of each first antenna unit and the amplitude of the detection signal received by each first antenna unit. , and the relationship between the distance R between the antenna and the amplitude a _r of the antenna of the antenna unit and the terminal unit receives the detection signal, the position information of the first terminal antenna may be determined.

When the magnitude of the gain of the terminal antenna is related to one of the direction angle and the elevation angle, the antenna array includes at least four first antenna elements, and the first position information of the terminal antenna can be determined.

When the magnitude of the gain of the terminal antenna is related to both the direction angle and the elevation angle, the antenna array includes at least five first antenna elements, and the first position information of the terminal antenna can be determined.

Of course, before step S810, the direction information of the terminal antenna sent by the terminal device can also be received, so that the angle Δθ between the direction pattern function of the terminal antenna and the reference direction of the direction angle in the pattern function of the antenna elements in the antenna array can be determined. The included angle Δφ of the reference direction of the pitch angle.

The first position information of the terminal antenna may be used to indicate the position coordinate A (x _t , y _t , z _t ). The position indicated by the first position information of the terminal antenna may be the real position of the terminal antenna or the equivalent position of the terminal antenna.

Figure 3 is a schematic diagram of the propagation path of the detection signal. The detection signal sent by the terminal antenna travels straight in the air and is transmitted to each antenna unit of the antenna array. The coordinate A indicated by the first position information of the terminal antenna determined by step S810 is the real position of the terminal antenna.

Fig. 4 is a schematic diagram of the propagation path of the detection signal. The detection signal emitted by the terminal antenna propagates in a straight line in the air, and part of it is blocked by the obstruction 420, and the other part is reflected by the wall or other reflector 410 and transmitted to each antenna unit of the antenna array. Generally, the distance between the terminal antenna and the antenna array is much larger than the size of the antenna array. Therefore, the surface of the reflector 410 for reflecting the detection signal can be considered as a plane. The coordinate A indicated by the first position information of the terminal antenna determined in step S810 can be understood as the equivalent position of the terminal antenna. That is to say, the detection signal sent by the detection signal is reflected and transmitted to the antenna array. When the same detection signal as the terminal antenna at position A is transmitted to the antenna array without reflection, the amplitude of the detection signal received by each antenna element in the antenna array And phase are equal.

Therefore, compared to the actual position of the terminal antenna, the first position information of the terminal antenna determined in step S810 can more accurately reflect the detection signal transmission situation, so that the charging signal sent in the subsequent step S820 can achieve energy convergence.

It should be understood that, because the first position information of the terminal antenna can indicate the true position of the terminal antenna, or the equivalent position of the terminal antenna, the directional pattern function of the terminal antenna is different from the directional angle in the pattern function of the antenna elements in the antenna array. The included angle Δθ of the reference direction and the included angle Δφ of the reference direction of the pitch angle may be a true included angle or an equivalent included angle. Therefore, Δθ and/or Δφ can be determined more accurately according to the first relationship model.

It should be understood that the detection signal can carry information, such as charging request information. The charging request information is used to request the antenna array to send a charging signal.

A part of the detection signal sent by the terminal antenna may propagate to the antenna array through the propagation path as shown in FIG. 3, and the other part may propagate to the antenna array through the propagation path as shown in FIG. 4.

Since there is a delay between the multiple detection signals received by the first antenna unit, the first antenna unit may determine that there are multiple detection signals received by the first antenna unit according to information in the received detection signals.

The amplitude of the detection signal with a larger amplitude among the plurality of detection signals with a delay received by the first antenna unit may be the amplitude of the detection signal received by the first antenna unit indicated by the first amplitude information. Thus, the charging efficiency can be improved.

In step S820, according to the first position information, each second antenna unit is controlled to send a charging signal, and each charging signal is used to charge the terminal device where the terminal antenna is located.

Charging the device where the terminal antenna is located can also be understood as the terminal antenna receiving the charging signal to realize the charging of the terminal device.

When the antenna array includes a plurality of second antenna units, the frequency of the charging signal sent by each second antenna unit is equal. The frequency of the charging signal sent by each second antenna unit may be a preset frequency.

The frequency of each charging signal and the frequency of the detection signal may be the same or different.

If the frequency of each charging signal is the same as the frequency of the detection signal, the distance between the position indicated by the first position information and each of the at least one second antenna unit and the second relationship model can be used , Determine the first phase information. The first phase information is used to indicate the phase of the detection signal received by each second antenna unit. The phase determined according to the second relationship model is a phase calculation value, that is, the first phase information represents a calculation value of the phase of the detection signal received by each second antenna unit.

Before step S820, a second relationship model may be determined.

The second relationship model is used to indicate the relationship between the distance the electromagnetic wave propagates and the phase of the electromagnetic wave. The phase of the detection signal received by the second antenna unit, that is, the phase of the detection signal at a distance of R _T1 from the terminal antenna

It can be expressed as

Among them, R _T1 represents the distance between the antenna unit T1 and the terminal antenna.

It should be understood that the above phase

In the expression, the detection signal sent by the terminal antenna is used as a reference, that is, the above expression defaults that the phase of the detection signal sent by the terminal antenna is 0. Of course, it can also be considered that the phase of the detection signal sent by the terminal antenna is

but

Therefore, the second relational model can quantitatively represent the phase of the detection signal received by the antenna unit

The mathematical relationship with the first position information of the terminal antenna.

According to the calculated value of the phase of the detection signal received by each second antenna unit, the antenna array can be controlled to send a charging signal. The difference between the phases of the charging signals sent by each second antenna unit and the difference between the phases corresponding to each second antenna unit indicated by the first phase information are equal in magnitude, and opposite in positive and negative.

Each first antenna unit can also send a charging signal.

The difference between the phase of the charging signal sent by each antenna unit is opposite to the difference between the phase of the detection signal at the location of each antenna unit. Wherein, the phase of the detection signal received by the first antenna unit may be determined according to the second relational model (that is, the phase calculation value of the first antenna unit), or it may be obtained by detecting the detection signal received by the first antenna unit (That is, the phase detection value of the first antenna unit).

When the frequency of the charging signal and the detection signal are equal, the phase of the charging signal sent by each antenna unit in the antenna array may be opposite to the phase of the detection signal received by the antenna unit. The phases of the two signals are opposite, that is, the sum of the phases of the two signals is an integer multiple of 2π, for example, it can be 0 or 2π.

Further, the amplitude of each charging signal in the charging signal can also be determined according to the first position information of the terminal antenna.

According to the first position information and the first relationship model, the second amplitude information can be determined. The second amplitude information is used to indicate the amplitude of the detection signal received by each second antenna unit in the at least one second antenna unit (that is, the calculated value of the amplitude of the detection signal received by the second antenna unit).

The ratio between the amplitudes of the charging signals sent by each second antenna unit may be equal to the ratio between the amplitudes corresponding to each second antenna unit indicated by the second amplitude information.

The ratio between the amplitude of the charging signal sent by each antenna unit is equal to the ratio between the amplitude of the detection signal received by the antenna unit, and the charging efficiency can be improved. The amplitude of the detection signal received by the first antenna unit may be obtained by detecting the amplitude of the detection signal received by the antenna unit (that is, the amplitude detection value of the detection signal received by the first antenna unit); The amplitude of the detection signal can be a calculated amplitude value.

In other words, the detection signal sent by the terminal antenna is A ₀ cos (2πf ₀ t). The detection signal received by a certain antenna unit is

The charging signal sent by the antenna unit can be

Among them, k is a constant, and for the charging signal sent by each antenna unit, k is equal. The antenna unit may be the first antenna unit or the second antenna unit.

In the case where the frequency of the charging signal is different from the frequency of the detection signal, the charging signal may be determined according to the first position information of the terminal antenna using a beamforming technology.

The phase of the charging signal sent by each antenna unit

It can be expressed as

in,

It is the preset phase, which can be 0 or other values.

Therefore, each charging signal reaches the same phase when it reaches the terminal antenna.

Further, the amplitude of the charging signal sent by each antenna unit can be determined according to the transmission loss formula of the electromagnetic wave in free space and the relationship between the amplitude and the power consumption. For example, it is possible to calculate the amplitude of the electromagnetic wave received by each antenna unit when the terminal antenna sends a signal with the same frequency as the charging signal, and make the ratio between the amplitudes of the charging signals equal to this ratio.

During the transmission of electromagnetic waves from the antenna array to the terminal antenna, or from the terminal antenna to the antenna array, the medium may be non-uniform, and the electromagnetic wave may propagate in the non-uniform medium. When the frequency of the electromagnetic wave is different, the transmission path of the electromagnetic wave is not the same. Therefore, the frequency of the charging signal is the same as the frequency of the detection signal, which can make the energy focus more accurate and improve the charging efficiency.

Through step S810 to step S820, it is not necessary to detect the detection signal received by each antenna unit, and only by detecting the amplitude of the detection signal received by at least three first antenna units that are not collinear on the antenna array, the terminal antenna is determined And further determine the charging signal sent by the antenna array according to the first position information of the terminal antenna, and use the charging signal to charge the device where the terminal antenna is located. Therefore, the number of hardware devices for detecting the antenna unit can be reduced, and the cost can be reduced.

In some embodiments, the detection signal transmitted to a part of the first antenna unit arrives at the first antenna unit after being reflected by other objects, and the detection signal transmitted to another part of the first antenna unit is not reflected by other objects, and follows a straight line. Propagated to the first antenna unit. In this case, it is impossible to accurately determine the first position information of the terminal antenna through steps S810 to S820, which results in the phase of the detection signal at each second antenna unit position determined according to the second relationship model that does not match the actual situation.

In order to solve the above problem, the second relationship model can be used to determine the phase calculation value received by each first antenna unit. The phase calculation value of the first antenna element is compared with the phase detection value.

Before step S820, third phase information may be obtained, where the third phase information is used to indicate the phase of the detection signal received by each first antenna unit, and the third phase information is obtained through detection. Each detection unit may also detect the amplitude of the detection signal received by the first antenna unit corresponding to the detection unit.

The second relationship model may be used to determine the second phase information according to the distance between the position indicated by the first position information of the terminal antenna and each first antenna unit. The second phase information is used to indicate the phase of the location of each first antenna unit.

For any one of the first antenna units, when the difference between the phase indicated by the second phase information and the phase indicated by the third phase information is less than or equal to a preset value, a reminder message may be sent to indicate all The determination of the first position information of the terminal antenna fails.

For each first antenna unit, when the difference between the phase indicated by the second phase information and the phase indicated by the third phase information is less than or equal to a preset value, step S820 may be performed, thereby improving the charging efficiency .

It should be understood that when the frequencies of the charging signal and the detection signal are equal, there is no need to calculate the amplitude and phase of the charging signal sent by each antenna unit. The third phase information and the first amplitude information can be obtained before step S810, and According to the third phase information and the first amplitude information, the phase and amplitude of the charging signal sent by each first antenna unit are determined, so that the amount of calculation for determining the phase and amplitude of the charging signal sent by each first antenna unit can be reduced.

The antenna array 200 includes at least three first antenna elements and at least one second antenna element.

The positions of the at least three first antenna units and the position of the at least one second antenna unit may be located or approximately located on a plane. At least three first antenna elements are not collinear.

The first antenna unit 211 of the at least three first antenna units is located outside the straight line where the first antenna unit 212 and the first antenna unit 213 are located. In other words, the at least three first antenna elements are not arranged on a straight line, and the at least three first antenna elements may form a plane. This plane can also be understood as an approximate plane.

The first antenna unit has a one-to-one correspondence with the phase detector. Each phase detector is used to determine the amplitude and phase of the detection signal received by the first antenna unit corresponding to the phase detector.

When designing the antenna array, no less than three antenna elements can be selected as the first antenna element according to cost and accuracy requirements. For a circular array, in a preferred manner, the multiple first antenna elements may be located in multiple radial directions of the circular array. For a square array, a preferred way is to select multiple first antenna elements in two mutually perpendicular directions. As shown in FIG. 5, the line where the first antenna unit 211 and the first antenna unit 214 are located is perpendicular to the line where the first antenna unit 212 and the first antenna unit 213 are located.

Each antenna unit can be connected to a processing unit, where the first antenna unit can be connected to the first processing unit 310 shown in FIG. 6, and the second antenna unit can be connected to the second processing unit 320 shown in FIG. 7.

The first processing unit 310 includes a phase detector 122 and a phase shifter 121. When the first antenna unit receives the detection signal, the phase detector 122 can extract and determine the phase and amplitude of the detection signal received by the first antenna unit.

The second processing unit 320 includes a phase shifter 121. The processing unit 400 may not include the phase detector 122.

Before step S601, the antenna array 200 receives the detection signal sent by the terminal device.

The antenna array 200 may be in a receiving state, and both the first antenna unit and the second antenna unit in the antenna array 200 receive detection signals. Alternatively, all or part of the second antenna unit may be turned off, and the first antenna unit receives the detection signal.

Each first antenna unit corresponds to a first processing unit 310. The first processing unit 310 includes a phase detector 122.

Each second antenna unit corresponds to a second processing unit 320. The second processing unit 320 does not include the phase detector 122.

Both the first processing unit 310 and the second antenna unit include a phase shifter 121.

In step S601, the phase detector 122 in each first processing unit 310 determines the amplitude and phase of the detection signal received by the first antenna unit corresponding to the phase detector, and transmits them to the amplitude and phase calculation unit 400.

The first processing unit 310 may also transmit the amplitude detection value of the detection signal received by the first antenna unit to the amplitude and phase calculation unit 400 and the control unit 130, and transmit the phase detection value of the detection signal received by the first antenna unit to the control unit. Unit 130.

In other words, after the first processing unit 310 determines the phase detection value of the detection signal received by the first antenna unit, it is transmitted to the control unit 130, which may or may not be transmitted through the amplitude and phase calculation unit 400.

In step S602, the amplitude and phase calculation unit 400 determines the amplitude calculation value and the phase calculation value of the detection signal received by each second antenna unit, and transmits them to the control unit 130.

First, the amplitude and phase calculation unit 400 may determine the power of the detection signal received by the second antenna unit according to the calculated value of the amplitude of the detection signal received by the second antenna unit.

The detection signal propagates in space in the form of electromagnetic waves, and the power of the electromagnetic wave is proportional to the square of the amplitude. Therefore, the power of the electromagnetic wave can be determined according to the amplitude of the electromagnetic wave.

Then, the amplitude and phase calculation unit 400 may determine the position of the terminal antenna according to the received power of the detection signal received by the first antenna unit.

Establish a Cartesian coordinate system. For example, the linear direction where the first antenna unit 212 and the first antenna unit 213 are located is the x-axis, the linear direction where the first antenna unit 211 and the first antenna unit 214 are located is the y-axis, and the direction perpendicular to the antenna array 200 is the z-axis. .

The detection signal sent by the terminal antenna propagates in space in the form of electromagnetic waves. The transmission loss formula of electromagnetic waves in free space can be expressed as:

Among them, P _r represents the power of the electromagnetic wave received by the electromagnetic wave receiving end, P _t represents the power of the electromagnetic wave sent by the electromagnetic wave transmitting end, G _r (θ _r , φ _r ) represents the pattern function of the antenna unit at the electromagnetic wave receiving end, G _t (θ _t , φ _t ) represents the directional pattern function of the antenna at the electromagnetic wave transmitting end, λ is the wavelength of the electromagnetic wave, and R represents the distance between the antenna unit at the electromagnetic wave receiving end and the antenna at the electromagnetic wave transmitting end.

The directional function graph G(θ,φ) of the antenna is used to represent the antenna gain of the antenna at the corresponding angle relative to the omnidirectional equal-power radiation antenna. Among them, θ is the pitch angle, and φ is the direction angle.

The wavelength λ can be expressed as

Among them, the electromagnetic wave propagation speed

f is the frequency of electromagnetic waves, ε is the dielectric constant of the medium, and μ is the magnetic permeability of the medium.

The terminal antenna serves as the electromagnetic wave transmitting end, _{and the distance between its position A (x t} , y _t , z _t ) and the first antenna unit B (x, y, z) can be expressed as

The pitch angle θ _{1 of the} terminal antenna A (x _t , y _t , z _t _{) in the direction function graph G 1} (θ ₁ , φ ₁ ) of the first antenna unit B (x, y, z) can be expressed as the terminal The angle between the line where the device A (x _t , y _t , z _t ) and the first antenna unit B (x, y, z) are located and the vertical direction of the plane where the antenna array is located, namely

Among them, arctan() represents the arctangent function.

That is, the antenna array direction perpendicular to the plane of the pitch angle θ ₁ of the reference direction.

The direction angle φ _{1 of the} terminal device A (x _t , y _t , z _t _{) in the direction function graph G 1} (θ ₁ , φ ₁ ) of the first antenna unit B (x, y, z) can be expressed as the terminal The angle between the projection direction of the device A (x _t , y _t , z _t ) and the first antenna unit B (x, y, z) on the plane where the antenna array is located and the reference direction. The reference direction may be x Axis direction, then

The antenna array can charge specific terminal devices of one or more models. When the terminal antenna of the terminal device is an omnidirectional antenna, the direction function graph of the terminal antenna G ₂ (θ ₂ , φ ₂ )=1. Or, when the gain of the terminal antenna in each radiation direction of the terminal antenna is equal, in the effective radiation direction of the terminal antenna, G ₂ (θ ₂ , φ ₂ )=k, and k is a constant.

Take the coordinates B1 (x1, y1, z1) of the first antenna unit 211, the coordinates B2 (x2, y2, z2) of the first antenna unit 212, and the coordinates B3 (x3, y3, z3) of the first antenna unit 213 respectively with Enter the expressions of R, θ ₁ , φ ₁ , based on the amplitude detection values of the detection signals received by the three first antenna units, and the relationship between the power and amplitude of the detection signals sent by the terminal antenna, and use the electromagnetic wave in space. loss formula, simultaneous equations can be obtained coordinates _{_{a (x t, y t,}} z t) in x _{_t,} y _t terminal antenna, z value of _t.

_{When the direction function graph G 2} (θ ₂ , φ ₂ ) of the terminal antenna of the terminal device is not a constant, but is a function related to the elevation angle θ ₂ and/or the direction angle φ ₂ , the terminal device may report to the amplitude and phase calculation unit 400 Send the angle information of the terminal antenna. The angle information of the terminal antenna is used to indicate the reference direction _{of the elevation angle θ 2} and/or the direction angle φ _{2 of the terminal antenna.}

According to the reference direction of the elevation angle θ ₂ and the direction angle φ ₂ of the terminal antenna direction function graph G ₂ (θ ₂ , φ ₂ ), and the direction function graph G ₁ (θ ₁ , φ ₁ ) the reference direction of the elevation angle θ ₁ and the direction angle φ ₁ , so that the coordinates B (x, y, z) of the first antenna unit and the coordinates A (x _t , y _t , z _{t) of the terminal antenna can be passed} ) Represents θ ₁ and φ ₁ .

According to the pitch angle θ ₂ and the reference direction of the direction angle φ ₂ of the terminal antenna direction function graph G ₂ (θ ₂ , φ ₂ ), the difference between the reference direction of the pitch angle θ _{2 and} the reference direction of the pitch angle θ _{1 can be determined} angle Δθ, the reference orientation direction angle φ to the direction of _an angle φ between the reference direction of the angle Δφ _2.

Thus, according to the amplitude of the detection signal received by the three first antenna units and the power of the detection signal sent by the terminal antenna, the simultaneous equations of the electromagnetic wave loss formula in space can be used to solve the coordinate A(x _t , Y _t , z _t ) are the values _{of x t} , y _t , and z _t.

When the number of the first antenna unit is greater than three, multiple coordinate values can be obtained according to it. Taking the average of these coordinate values, the coordinate A (x _t , y _t , z _t ) of the terminal antenna can be obtained.

_{When the direction function graph G 2} (θ ₂ , φ ₂ ) of the terminal antenna of the terminal device is not a constant, but a function related to the elevation angle θ ₂ and/or the direction angle φ ₂ , it can also be based on at least 5 first antennas The amplitude detection value of the detection signal received by the unit, and the relationship between the power and amplitude of the detection signal sent by the terminal antenna, using the loss formula of electromagnetic waves in space and the simultaneous equations, the coordinates of the terminal antenna A(x _t , Y _t , z _t ) in _{the values of x t} , y _t , z _t and the included angle Δθ and Δφ.

After that, the power and phase of the detection signal at the location of the second antenna unit can be calculated according to the coordinates A (x _t , y _t , z _{t) of the terminal antenna.}

According to the coordinates C (x, y, z) of the second antenna unit and the coordinates A (x _t , y _t , z _t ) of the terminal antenna, use the electromagnetic wave transmission loss formula in space

The power of the detection signal received by each second antenna unit can be calculated. Where P _r represents the power of the detection signal received by the first antenna unit, P _t represents the power of the detection signal sent by the terminal antenna, λ is the wavelength of the detection signal, and R is the distance between the first antenna unit and the terminal antenna.

According to the power of the detection signal at the location of the second antenna unit, the calculated value of the amplitude of the detection signal received by the second antenna unit can be determined.

Using the phase formula of electromagnetic waves

The calculated value of the phase of the detection signal received by each second antenna unit can be calculated.

Finally, the amplitude and phase calculation unit 400 can transmit the amplitude and phase information of each antenna unit to the control device 130. The amplitude and phase information of each antenna element is used to indicate the amplitude and phase of the detection signal received by the antenna element.

In step S603, the control device 130 determines the charging signal parameter of each antenna unit according to the received amplitude and phase information of each antenna. The charging signal parameter of each antenna unit includes the amplitude and phase of the charging signal sent by the antenna unit, and The charging signal parameter of the antenna unit is sent to the phase shifter 121 in the processing unit corresponding to the antenna unit.

After that, the phase shifter 121 in each processing unit controls the corresponding antenna unit to send the charging signal according to the charging signal parameter.

Through step S601 to step S603, the first antenna unit in the antenna array is connected to the phase detector, and only by detecting the amplitude and phase of the detection signal received by the first antenna unit, the detection signal received by each antenna unit in the antenna array can be determined. Amplitude and phase, thereby determining the phase and amplitude of the charging signal for charging the terminal device. The detection signal is sent by the terminal antenna in the terminal device. Through step S601 to step S603, the number of phase detectors connected to the antenna array can be reduced, thereby reducing the cost.

FIG. 9 is a schematic structural diagram of a signal processing device based on an antenna array provided by an embodiment of the present application.

The device 1100 includes a determination module 1120 and a control module 1130.

The determining module 1120 is configured to determine the first position information of the terminal antenna according to the first amplitude information and the first relationship model, and the first relationship model is used to indicate the relationship between the amplitude of the electromagnetic wave received by each antenna unit and the position information. The position information is used to indicate the position of the electromagnetic wave transmitting antenna, and the first amplitude information is obtained by detecting the amplitude of the detection signal received by each of the at least three first antenna elements The detection signal is an electromagnetic wave sent by the terminal antenna, and the terminal antenna is an antenna outside the antenna array.

The control module 1130 is configured to, according to the first position information, control each of the second antenna units to send a charging signal, and each charging signal is used to charge the terminal device where the terminal antenna is located.

Optionally, the frequency of each charging signal is equal to the frequency of the detection signal.

The control module 1130 is specifically configured to determine the first phase information according to the distance between the position indicated by the first position information and each second antenna element of the at least one second antenna unit, and a second relationship model, The first phase information is used to indicate the phase of the detection signal received by each of the second antenna units, and the second relationship model is used to indicate the relationship between the electromagnetic wave propagation distance and the phase of the electromagnetic wave.

The control module 1130 is specifically configured to, according to the first phase information, control each second antenna unit to send a charging signal, and the difference between the phase of the charging signal sent by each second antenna unit and the The first phase information indicates that the magnitude of the difference between the phases corresponding to each of the second antenna units is equal, and the positive and negative are opposite.

Optionally, the control module 1130 is further configured to: determine second amplitude information according to the first position information and the first relationship model, where the second amplitude information is used to indicate the at least one second antenna unit The amplitude of the detection signal at the location of each second antenna unit in.

The control module 1130 is further configured to: according to the first phase information and the second amplitude information, control each second antenna unit to send a charging signal, and the amplitude of the charging signal corresponding to each second antenna unit is between The ratio is equal to the ratio between the amplitudes corresponding to each second antenna unit indicated by the second amplitude information.

Optionally, the determining module 1120 is further configured to determine the second phase information by using a second relationship model and the distance between the position indicated by the first position information and each first antenna element. The information is used to indicate the phase of the detection signal received by each first antenna unit, and the second relationship model is used to indicate the relationship between the electromagnetic wave propagation distance and the phase of the electromagnetic wave.

The control module 1130 is specifically configured to: for each first antenna unit, the difference between the phase indicated by the second phase information and the phase indicated by the third phase information is less than a preset value, according to the first position Information, controlling each second antenna unit to send a charging signal, and the third phase information is obtained by detecting the phase of the detection signal received by each first antenna unit.

FIG. 10 is a schematic structural diagram of a signal processing device based on an antenna array provided by an embodiment of the present application.

The antenna array includes at least three first antenna elements and at least one second antenna element, and the at least three first antennas are not collinear.

The apparatus 1200 includes a memory 1210 and a processor 1220.

The memory 1210 is used to store program instructions.

The processor 1220 is configured to execute the program instructions to execute the following methods:

Determine the first position information of the terminal antenna according to the first amplitude information and the first relationship model, where the first relationship model is used to indicate the relationship between the amplitude of the electromagnetic wave received by each antenna unit and the position information, the position The information is used to indicate the position of the transmitting antenna of the electromagnetic wave, the first amplitude information is obtained by detecting the amplitude of the detection signal received by each of the at least three first antenna elements, and the detection signal is Electromagnetic waves sent by the terminal antenna, where the terminal antenna is an antenna outside the antenna array;

According to the first position information, each of the second antenna units is controlled to send a charging signal, and each charging signal is used to charge the terminal device where the terminal antenna is located.

The processor 1220 is further configured to determine the first phase information according to the distance between the position indicated by the first position information and each second antenna element of the at least one second antenna element, and a second relationship model, The first phase information is used to indicate the phase of the detection signal received by each of the second antenna units, and the second relationship model is used to indicate the relationship between the electromagnetic wave propagation distance and the phase of the electromagnetic wave.

The processor 1220 is further configured to, according to the first phase information, control each second antenna unit to send a charging signal, and the phase difference between the phase of the charging signal sent by each second antenna unit is equal to that of the The first phase information indicates that the magnitude of the difference between the phases corresponding to each of the second antenna units is equal, and the positive and negative are opposite.

Optionally, the processor 1220 is further configured to determine second amplitude information according to the first position information and the first relationship model, where the second amplitude information is used to indicate the at least one second antenna unit The amplitude of the detection signal received by each second antenna unit in.

The processor 1220 is further configured to, according to the first phase information and the second amplitude information, control each second antenna unit to send a charging signal, and the amplitude of the charging signal corresponding to each second antenna unit is between The ratio is equal to the ratio between the amplitudes corresponding to each second antenna unit indicated by the second amplitude information.

Optionally, the processor 1220 is further configured to use a second relationship model and the distance between the position indicated by the first position information and each first antenna element to determine second phase information. The information is used to indicate the phase of the detection signal received by each first antenna unit, and the second relationship model is used to indicate the relationship between the electromagnetic wave propagation distance and the phase of the electromagnetic wave.

The processor 1220 is further configured to: for each first antenna unit, the difference between the phase indicated by the second phase information and the phase indicated by the third phase information is less than a preset value, according to the first position Information, controlling each second antenna unit to send a charging signal, and the third phase information is obtained by detecting the phase of the detection signal received by each first antenna unit.

An embodiment of the present application also provides an electronic device, which includes the aforementioned antenna array and a signal processing device based on the antenna array.

An embodiment of the present application also provides a computer program storage medium, wherein the computer program storage medium has program instructions, and when the program instructions are executed by a processor, the processor executes the signal processing based on the antenna array described above. method.

An embodiment of the present application further provides a chip system, characterized in that the chip system includes at least one processor, and when the program instructions are executed in the at least one processor, the at least one processor is caused to execute the above Signal processing method based on antenna array.

A person of ordinary skill in the art may realize that the units and algorithm steps of the examples described in combination with the embodiments disclosed herein can be implemented by electronic hardware or a combination of computer software and electronic hardware. Whether these functions are executed by hardware or software depends on the specific application and design constraint conditions of the technical solution. Professionals and technicians can use different methods for each specific application to implement the described functions, but such implementation should not be considered beyond the scope of this application.

In the embodiments of the present application, "at least one" refers to one or more, and "multiple" refers to two or more. "And/or" describes the association relationship of the associated objects, indicating that there can be three types of relationships, for example, A and/or B, which can mean the situation where A exists alone, A and B exist at the same time, and B exists alone. Among them, A and B can be singular or plural. The character "/" generally indicates that the associated objects before and after are in an "or" relationship. "The following at least one item" and similar expressions refer to any combination of these items, including any combination of single items or plural items. For example, at least one of a, b, and c can represent: a, b, c, a-b, a-c, b-c, or a-b-c, where a, b, and c can be single or multiple. Those skilled in the art can clearly understand that, for the convenience and conciseness of description, the specific working process of the system, device and unit described above can refer to the corresponding process in the foregoing method embodiment, which will not be repeated here.

In the several embodiments provided in this application, it should be understood that the disclosed system, device, and method can be implemented in other ways. For example, the device embodiments described above are merely illustrative. For example, the division of the units is only a logical function division, and there may be other divisions in actual implementation, for example, multiple units or components may be combined or It can be integrated into another system, or some features can be ignored or not implemented. In addition, the displayed or discussed mutual coupling or direct coupling or communication connection may be indirect coupling or communication connection through some interfaces, devices or units, and may be in electrical, mechanical or other forms.

The units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or they may be distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the objectives of the solutions of the embodiments.

In addition, the functional units in the various embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units may be integrated into one unit.

If the function is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer readable storage medium. Based on this understanding, the technical solution of the present application essentially or the part that contributes to the existing technology or the part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including Several instructions are used to make a computer device (which may be a personal computer, a server, or a network device, etc.) execute all or part of the steps of the methods described in the various embodiments of the present application. The aforementioned storage media include: U disk, mobile hard disk, read-only memory (read-only memory, ROM), random access memory (random access memory, RAM), magnetic disks or optical disks and other media that can store program codes. .

The above are only specific implementations of this application, but the protection scope of this application is not limited to this. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed in this application. Should be covered within the scope of protection of this application. Therefore, the protection scope of this application should be subject to the protection scope of the claims.

Claims

A signal processing method based on an antenna array, wherein the antenna array includes at least three first antenna elements and at least one second antenna element, and the positions of the at least three first antenna elements are not collinear;

The method includes:

Determine the first position information of the terminal antenna according to the first amplitude information and a first relationship model, where the first relationship model is used to indicate the relationship between the amplitude of the electromagnetic wave received by each antenna unit and the position information, and the position The information is used to indicate the position of the transmitting antenna of the electromagnetic wave, the first amplitude information is obtained by detecting the amplitude of the detection signal received by each of the at least three first antenna elements, and the detection signal is Electromagnetic waves sent by the terminal antenna, where the terminal antenna is an antenna outside the antenna array;

According to the first position information, each of the second antenna units is controlled to send a charging signal, and each charging signal is used to charge the terminal device where the terminal antenna is located.
The method according to claim 1, wherein the frequency of each charging signal is equal to the frequency of the detection signal;

The controlling each of the second antenna units to send a charging signal according to the first position information includes:

The first phase information is determined according to the distance between the position indicated by the first position information and each second antenna element of the at least one second antenna element, and the second relationship model, and the first phase information is used In order to indicate the phase of the detection signal received by each of the second antenna units, the second relationship model is used to indicate the relationship between the electromagnetic wave propagation distance and the phase of the electromagnetic wave;

According to the first phase information, each second antenna unit is controlled to send a charging signal, and the difference between the phases of the charging signals sent by each second antenna unit and the first phase information indicate each The magnitude of the difference between the phases corresponding to the second antenna unit is equal, and the positive and negative are opposite.
The method of claim 2, wherein:

The controlling each of the second antenna units to send a charging signal according to the first position information includes:

Determine second amplitude information according to the first position information and the first relationship model, where the second amplitude information is used to indicate the received information of each second antenna unit of the at least one second antenna unit The amplitude of the detection signal;

The controlling each of the second antenna units to send a charging signal according to the first phase information includes:

According to the first phase information and the second amplitude information, each second antenna unit is controlled to send a charging signal, and the ratio between the amplitude of the charging signal sent by each second antenna unit is equal to the second amplitude The ratios between the amplitudes corresponding to each second antenna unit indicated by the information are equal.
The method according to any one of claims 1-3, characterized in that,

The method further includes: using a second relationship model and the distance between the position indicated by the first position information and each first antenna element to determine second phase information, where the second phase information is used to indicate each antenna element. The phase of the detection signal received by the first antenna unit, and the second relationship model is used to indicate the relationship between the distance of electromagnetic wave propagation and the phase of the electromagnetic wave;

The controlling each second antenna unit to send a charging signal according to the first position information includes: when for each first antenna unit, the phase indicated by the second phase information is different from the phase indicated by the third phase information. When the difference between the phases is less than a preset value, according to the first position information, each second antenna unit is controlled to send a charging signal, and the third phase information is the detection received by each first antenna unit The phase of the signal is detected.
A signal processing device based on an antenna array, wherein the antenna array includes at least three first antenna elements and at least one second antenna element, and the positions of the at least three first antenna elements are not collinear;

The device includes: a determination module and a control module;

The determining module is configured to determine the first position information of the terminal antenna according to the first amplitude information and the first relationship model, and the first relationship model is used to indicate the difference between the amplitude of the electromagnetic wave received by each antenna unit and the position information. The position information is used to indicate the position of the electromagnetic wave transmitting antenna, and the first amplitude information is to detect the amplitude of the detection signal received by each of the at least three first antenna elements Obtained, the detection signal is an electromagnetic wave sent by a terminal antenna, and the terminal antenna is an antenna outside the antenna array;

The control module is configured to, according to the first position information, control each of the second antenna units to send a charging signal, and each charging signal is used to charge the terminal device where the terminal antenna is located.
The device according to claim 5, wherein the frequency of each charging signal is equal to the frequency of the detection signal;

The control module is used for:

The first phase information is determined according to the distance between the position indicated by the first position information and each second antenna element of the at least one second antenna element, and the second relationship model, and the first phase information is used In order to indicate the phase of the detection signal received by each of the second antenna units, the second relationship model is used to indicate the relationship between the electromagnetic wave propagation distance and the phase of the electromagnetic wave;

According to the first phase information, each second antenna unit is controlled to send a charging signal, and the difference between the phases of the charging signals sent by each second antenna unit and the first phase information indicate each The magnitude of the difference between the phases corresponding to the second antenna unit is equal, and the positive and negative are opposite.
The device according to claim 6, wherein:

The control module is further configured to determine second amplitude information according to the first position information and the first relationship model, where the second amplitude information is used to indicate each of the at least one second antenna unit The amplitude of the detection signal received by the second antenna unit;

The control module is further configured to: according to the first phase information and the second amplitude information, control each second antenna unit to send a charging signal, and the amplitude of the charging signal sent by each second antenna unit is between The ratio of is equal to the ratio between the amplitudes corresponding to each second antenna unit indicated by the second amplitude information.
The device according to any one of claims 1-7, characterized in that:

The determining module is further configured to determine second phase information by using a second relationship model and the distance between the position indicated by the first position information and each first antenna element, and the second phase information is used for Indicating the phase of the detection signal received by each first antenna unit, and the second relationship model is used to indicate the relationship between the electromagnetic wave propagation distance and the phase of the electromagnetic wave;

The control module is specifically configured to: for each first antenna unit, the difference between the phase indicated by the second phase information and the phase indicated by the third phase information is less than a preset value, according to the first antenna unit. The position information controls each second antenna unit to send the charging signal, and the third phase information is used to indicate the phase obtained by detecting the detection signal received by each first antenna unit.
A signal processing device based on an antenna array, wherein the antenna array includes a processor and a memory, the memory is used to store program instructions, and the processor is used to execute the program instructions to execute claims 1 to 4 The method of any one of.
A computer program storage medium, characterized in that, the computer program storage medium has program instructions, and when the program instructions are executed by a processor, the processor executes any one of claims 1 to 4 Methods.
A chip, characterized in that, the chip includes at least one processor, and when the program instructions are executed by the at least one processor, the at least one processor is caused to execute as described in any one of claims 1 to 4 The method described.