Microwave transmission method and apparatus

Abstract

The application provides a microwave transmitting method and device. The method comprises: performing area scanning based on a transmitting antenna array beam, and determining a target area based on first power indication information fed back by a target receiving end. Wherein, the excitation signal control phase of the transmitting antenna array beam transmitted to the target area is a first control phase. The first microwave is continuously transmitted to the target area based on the first control phase control of the transmitting antenna array, and second power indication information fed back by the target receiving end based on the first microwave is received. The motion state of the target receiving end is determined according to the second power indication information and the first power indication information, the second control phase of the transmitting antenna array beam is determined according to the running state of the target receiving end, and the second microwave is continuously transmitted based on the second control phase control of the transmitting antenna array. The method provided by the application can improve the efficiency of wireless energy transmission, enhance the applicability, and reduce the cost.

Description

Technical Field

[0001] This application relates to the field of wireless charging, and more particularly to a microwave transmission method and apparatus. Background Technology

[0002] Currently, energy issues are receiving increasing attention, and microwave power transfer (MPT) is a key technology for achieving wireless power transmission, attracting widespread research both domestically and internationally. MPT systems convert electrical energy into microwaves, transmit them through space, and are received by the receiver, which then converts the microwaves back into DC power. According to antenna array theory, the phase difference in radiation from each antenna array element (for convenience, it can be simply referred to as the transmitting element, antenna unit, or antenna vibrator) in the transmitting antenna array at the microwave transmitter determines beamforming and beam pointing, affecting the system's transmission efficiency. Therefore, it is necessary to adjust the phase of the transmitting elements to achieve directional microwave power transmission, thereby improving the efficiency of wireless power transmission. However, directional microwave power transmission typically requires knowledge of the receiver's position coordinates so that the transmitting elements can determine the phase difference between them and thus change the direction of microwave power transmission. During their research and practice, the inventors of this application discovered that existing technologies involve the receiver actively sending a guidance signal to the transmitter array elements. The transmitter array elements then determine the receiver's position coordinates based on the received guidance signal (i.e., using direction backtracking technology to obtain the receiver's position information). This position coordinate information is then used to change the phase of each element in the transmitter array to achieve directional transmission. However, using direction backtracking technology to obtain the receiver's position information requires installing an additional directional array on the receiver for sending the guidance signal, increasing the receiver's size, resulting in high cost and poor applicability. Summary of the Invention

[0003] This application provides a microwave transmission method and apparatus that can improve the efficiency of wireless power transmission, enhance applicability, and reduce implementation costs.

[0004] The present application is described below from different aspects. It should be understood that the different implementation methods and beneficial effects described below can be referenced from each other.

[0005] In a first aspect, this application provides a microwave transmission method. The method includes: scanning a region based on a transmitted beam from a transmitting antenna array, and determining a target region based on first power indication information fed back by a target receiver, wherein the first power indication information indicates the received power of the target receiver, and the received power of the target receiver when scanning the target region based on the transmitted beam is greater than the received power when scanning other regions besides the target region; the excitation signal control phase of the transmitted beam from the transmitting antenna array to the target region is a first control phase; controlling the transmitting antenna array to continuously transmit a first microwave to the target region based on the first control phase, and receiving second power indication information fed back by the target receiver based on the first microwave; determining the motion state of the target receiver according to the second power indication information and the first power indication information, determining a second control phase of the transmitted beam from the transmitting antenna array according to the operating state of the target receiver, and controlling the transmitting antenna array to continuously transmit a second microwave based on the second control phase.

[0006] In this embodiment, unlike related technologies that use an additional directional array installed at the receiver to transmit guiding signals for locating the target area, this application uses the transmitting antenna array of a microwave transmitting device (or microwave transmitter) to actively transmit beams for area scanning, and determines the target area based on the received power fed back from the target receiver, thus reducing costs. Furthermore, the motion state of the target receiver is determined by the magnitude of the received power fed back from the target receiver, and phase optimization is performed based on different motion states of the target receiver, which improves the efficiency of wireless power transmission and enhances the applicability of the solution.

[0007] In conjunction with the first aspect, in one feasible implementation, the step of performing area scanning based on the transmitted beam of the transmitting antenna array and determining the target area based on the first power indication information fed back by the target receiver includes: when performing the i-th area scan based on the transmitted beam of the transmitting antenna array, transmitting a beam to a designated area based on the transmitting antenna array, and receiving at least two power indication information fed back by the target receiver, wherein the designated area is at least two sub-areas of the first area determined during the (i-1)-th area scan, and one power indication information is used to indicate the received power of the target receiver when scanning a sub-area, where i is an integer greater than 1; and determining the target area from the at least two sub-areas based on the at least two power indication information. The sub-region with the highest received power at the target receiver is identified as the first region determined by the i-th region scan. When the power difference between the received power of the first region determined by the i-th region scan and the received power of the first region determined by the (i-1)-th region scan is greater than a first preset power threshold, the (i+1)-th region scan is performed based on the transmit beam of the transmit antenna array until the power difference between the received power of the first region determined by the (i+j)-th region scan and the received power of the first region determined by the (i+j-1)-th region scan is not greater than the first preset power threshold. Then, the first region determined by the (i+j)-th region scan is identified as the target region, where j is an integer greater than 0.

[0008] In this embodiment of the application, the microwave transmitting device performs area scanning by dividing the area and gradually reducing the area of ​​the divided area. When the power difference between the maximum received power determined by each scan is less than a given threshold (i.e., the first preset power threshold) during two consecutive area divisions and scans, the scanning stops. The target area where the receiver is located is determined based on the maximum received power obtained in the most recent area scan, i.e., the approximate location of the target receiver. This is beneficial for quickly locating the target area and for improving the efficiency of subsequent wireless power transmission.

[0009] In conjunction with the first aspect, in one feasible implementation, the step of performing area scanning based on the transmitted beam of the transmitting antenna array and determining the target area based on the first power indication information fed back by the target receiver includes: when performing the i-th area scan based on the transmitted beam of the transmitting antenna array, transmitting a beam to a designated area based on the transmitting antenna array, and receiving at least two power indication information fed back by the target receiver, wherein the designated area is at least two sub-regions of the first area determined during the (i-1)-th area scan, and one power indication information is used to indicate the received power of the target receiver when scanning a sub-region, where i is an integer greater than 1; based on the at least two power indication information, determining the sub-region with the highest received power of the target receiver from the at least two sub-regions, and using it as the first area determined by the i-th area scan. Region; when the power difference between the received power of the first region determined by the i-th region scan and the received power of the first region determined by the (i-1)-th region scan is greater than a first preset power threshold, and the area of ​​the designated region corresponding to the i-th region scan is greater than a first preset area, the (i+1)-th region scan is performed based on the transmit beam of the transmit antenna array until the power difference between the received power of the first region determined by the (i+j)-th region scan and the received power of the first region determined by the (i+j-1)-th region scan is not greater than the first preset power threshold, and / or the area of ​​the designated region corresponding to the (i+j)-th region scan is not greater than the first preset area, the first region determined by the (i+j)-th region scan is determined as the target region, where i is an integer greater than 1 and j is an integer greater than 0.

[0010] In this embodiment, the microwave transmitting device performs region scanning on the divided sub-regions and gradually reduces the area of ​​the divided regions. When the power difference between the maximum received power determined in each of two consecutive region divisions and scans is less than a given threshold (i.e., a first preset power threshold), and / or the area of ​​the most recently divided sub-region is too small (e.g., less than the first preset area), the scanning stops. The target region where the receiver is located is determined based on the received power, i.e., the approximate location of the target receiver. This improves the efficiency of wireless power transmission. Understandably, determining whether to terminate the scan based on the maximum received power determined in each of two consecutive scans and the area of ​​the most recently divided sub-region helps reduce the region scanning time and further improves processing efficiency.

[0011] In conjunction with the first aspect, in one feasible implementation, determining the motion state of the target receiver based on the second power indication information and the first power indication information includes: determining the absolute value of the power difference between each received second power indication information and the first power indication information; when the absolute value of the power difference between n consecutive received second power indication information and the first power indication information is not greater than a second preset power threshold, determining that the motion state of the target receiver is a stationary state.

[0012] In this embodiment, the absolute value of the power difference between each received second power indication information and the first power indication information is determined to be relative to the second preset power threshold. When it is determined that the absolute value of the power difference between n consecutive second power indication information and the first power indication information is not greater than the second preset power threshold, the motion state of the target receiving end is determined to be stationary, which is highly operable.

[0013] In conjunction with the first aspect, in one feasible implementation, determining the motion state of the target receiver based on the second power indication information and the first power indication information includes: determining the absolute value of the power difference between each received second power indication information and the first power indication information; when the absolute value of the power difference between any second power indication information and the first power indication information is greater than the second preset power threshold, determining the motion state of the target receiver as a moving state.

[0014] In this embodiment, the absolute value of the power difference between each received second power indication information and the first power indication information is determined to be relative to the second preset power threshold. When it is determined that the absolute value of the power difference between any second power indication information and the first power indication information is greater than the second preset power threshold, the motion state of the target receiving end is determined to be a moving state. This method is easy to operate and has high applicability.

[0015] In conjunction with the first aspect, in one feasible implementation, determining the second control phase of the transmitting antenna array transmit beam based on the operating state of the target receiver includes: when the motion state of the target receiver is determined to be stationary, obtaining a first preset phase value; determining a phase scanning interval based on the first control phase and the first preset phase value; and determining the second control phase from the phase scanning interval.

[0016] In this embodiment of the application, when the motion state of the target receiver is determined to be stationary, a first preset phase value is obtained, and a phase scanning interval is determined based on the first control phase and the first preset phase value, so as to determine the second control phase in the phase scanning interval, thereby narrowing the phase optimization range and greatly improving the phase iteration optimization speed for stationary receivers, which is beneficial to improving the efficiency of wireless power transmission.

[0017] In conjunction with the first aspect, in one feasible implementation, determining the phase scanning interval based on the first control phase and the first preset phase value includes: determining the difference between the first control phase and the first preset phase value as a lower phase limit, and determining the sum of the first control phase and the first preset phase value as a higher phase limit; and determining the phase scanning interval based on the lower phase limit and the higher phase limit.

[0018] In the embodiments of this application, the phase scanning interval is determined based on the lower phase limit and the upper phase limit, which is easy to understand and has strong applicability.

[0019] In conjunction with the first aspect, in one feasible implementation, the transmitting antenna array includes m antenna elements, the phase scanning interval includes m phase intervals, and one antenna element corresponds to one phase interval; the first control phase includes m first phases; before determining the second control phase from the phase scanning interval, the method further includes: determining any one antenna element from the m antenna elements as the first antenna element, and turning off the excitation signal input of the other m-1 antenna elements besides the first antenna element; determining the second control phase from the phase scanning interval includes: setting the excitation signal input of each of the other m-1 antenna elements to m antenna elements. The antenna elements are sequentially selected as antenna elements to be optimized, and a first phase interval corresponding to the antenna element to be optimized is determined from the m phase intervals. Based on each control phase included in the first phase interval, the antenna element to be optimized is controlled to transmit a third microwave, and the third power indication information fed back by the target receiver based on the third microwave of each control phase is received. A second phase is determined from the first phase interval according to the third power indication information, and a second control phase is determined according to the first phase corresponding to the first antenna element in the m first phases, and the second phase determined when each of the other m-1 antenna elements is used as the antenna element to be optimized.

[0020] In the embodiments of this application, by optimizing the control phase of the antenna element one by one in the phase scanning interval, the iteration optimization speed can be improved and the practicality of the solution can be enhanced.

[0021] In conjunction with the first aspect, in one feasible implementation, determining the second phase from the first phase interval based on each third power indication information includes: determining a target third power indication information from each third power indication information, wherein the received power indicated by the target third power indication information is the maximum received power among the received powers indicated by each third power indication information; and determining the control phase corresponding to the target third power indication information as the second phase from the first phase interval.

[0022] In this embodiment, the received power indicated by the target third power indication information is the maximum received power among all received powers indicated by each third power indication information. Therefore, for each antenna element to be optimized, by determining the control phase corresponding to the target third power indication information as the second phase from the first phase interval, the phase optimization speed of each antenna element is improved, thereby improving the overall efficiency of the scheme implementation and making it highly applicable.

[0023] In conjunction with the first aspect, in one feasible implementation, determining the second control phase of the transmit beam of the transmit antenna array based on the operating state of the target receiver includes: when the motion state of the target receiver is determined to be a moving state, transmitting a beam to the target area and the associated area of ​​the target area based on the transmit antenna array, and receiving each fourth power indication information fed back by the target receiver; determining the second control phase based on each fourth power indication information.

[0024] In this embodiment of the application, when the motion state of the target receiver is determined to be a moving state, a beam is transmitted to the target area and the associated area of ​​the target area based on the transmitting antenna array for dynamic tracking of the target receiver, which can improve the efficiency of wireless power transmission and has strong applicability.

[0025] In conjunction with the first aspect, in one feasible implementation, determining the second control phase based on each of the fourth power indication information includes: determining a target fourth power indication information from each of the fourth power information, wherein the received power indicated by the target fourth power indication information is the maximum received power among the received powers indicated by each of the fourth power indication information; and determining the control phase corresponding to the target fourth power indication information as the second control phase when the power difference between the received power indicated by the first power indication information and the received power indicated by the target fourth power indication information is less than a third preset power threshold.

[0026] In this embodiment of the application, the received power indicated by the target fourth power indication information is the maximum received power among all received powers indicated by each fourth power indication information. Therefore, for a mobile receiver, by determining the control phase corresponding to the target fourth power indication information as the second control phase, the mobile receiver can be tracked, thereby improving the efficiency of wireless power transmission and making it highly applicable.

[0027] Secondly, this application provides a microwave transmitting device. The microwave transmitting device includes: a region scanning module, configured to perform region scanning based on a transmitting antenna array transmitting beam, and determine a target region based on first power indication information fed back by a target receiver, wherein the first power indication information indicates the received power of the target receiver, and the received power of the target receiver when scanning the target region based on the transmitted beam is greater than the received power of the target receiver when scanning other regions besides the target region, and the excitation signal control phase of the transmitting antenna array transmitting beam to the target region is a first control phase; a control module, configured to control the transmitting antenna array to continuously transmit a first microwave to the target region based on the first control phase, and receive second power indication information fed back by the target receiver based on the first microwave; a processing module, configured to determine the motion state of the target receiver based on the second power indication information and the first power indication information, and determine the second control phase of the transmitting antenna array transmitting beam based on the operating state of the target receiver; the control module is further configured to control the transmitting antenna array to continuously transmit a second microwave based on the second control phase.

[0028] In conjunction with the second aspect, in one feasible implementation, the region scanning module is specifically used for: when performing the i-th region scan based on the transmitted beam of the transmitting antenna array, transmitting a beam to a designated region based on the transmitting antenna array, and receiving at least two power indication messages fed back by the target receiver, wherein the designated region is at least two sub-regions within the first region determined during the (i-1)-th region scan, and one power indication message is used to indicate the received power of the target receiver when scanning a sub-region, where i is an integer greater than 1; based on the at least two power indication messages, determining the sub-region with the highest received power of the target receiver from the at least two sub-regions. As the first region determined by the i-th region scan; when the power difference between the received power of the first region determined by the i-th region scan and the received power of the first region determined by the (i-1)-th region scan is greater than a first preset power threshold, the (i+1)-th region scan is performed based on the transmit beam of the transmit antenna array until the power difference between the received power of the first region determined by the (i+j)-th region scan and the received power of the first region determined by the (i+j-1)-th region scan is not greater than the first preset power threshold, the first region determined by the (i+j)-th region scan is determined as the target region, where j is an integer greater than 0.

[0029] In conjunction with the second aspect, in one feasible implementation, the area scanning module is specifically used for: when performing the i-th area scan based on the transmitted beam of the transmitting antenna array, transmitting a beam to a designated area based on the transmitting antenna array, and receiving at least two power indication messages fed back by the target receiver, wherein the designated area is at least two sub-regions of the first area determined during the (i-1)-th area scan, and one power indication message is used to indicate the received power of the target receiver when scanning a sub-region, where i is an integer greater than 1; based on the at least two power indication messages, determining the sub-region with the highest received power of the target receiver from the at least two sub-regions, as the first area determined by the i-th area scan; when the first area determined by the i-th area scan... When the power difference between the received power of the region corresponding to the first region determined by the (i-1)th region scan is greater than a first preset power threshold, and the area of ​​the designated region corresponding to the i-th region scan is greater than a first preset area, the (i+1)th region scan is performed based on the transmit beam of the transmit antenna array until the power difference between the received power of the first region determined by the (i+j)th region scan and the received power of the first region determined by the (i+j-1)th region scan is not greater than the first preset power threshold, and / or the area of ​​the designated region corresponding to the (i+j)th region scan is not greater than the first preset area, the first region determined by the (i+j)th region scan is determined as the target region, where i is an integer greater than 1 and j is an integer greater than 0.

[0030] In conjunction with the second aspect, in one feasible implementation, the processing module is specifically used to: determine the absolute value of the power difference between each received second power indication information and the first power indication information; when the absolute value of the power difference between n consecutive received second power indication information and the first power indication information is not greater than a second preset power threshold, determine that the motion state of the target receiving end is a stationary state.

[0031] In conjunction with the second aspect, in one feasible implementation, the processing module is specifically used to: determine the absolute value of the power difference between each received second power indication information and the first power indication information; when the absolute value of the power difference between any second power indication information and the first power indication information is greater than the second preset power threshold, determine that the motion state of the target receiving end is a moving state.

[0032] In conjunction with the second aspect, in one feasible implementation, the processing module is further configured to: when it is determined that the motion state of the target receiver is stationary, acquire a first preset phase value, determine a phase scanning interval based on the first control phase and the first preset phase value, and determine a second control phase from the phase scanning interval.

[0033] In conjunction with the second aspect, in one feasible implementation, the processing module is further configured to: determine the difference between the first control phase and the first preset phase value as a lower phase limit, and determine the sum of the first control phase and the first preset phase value as a higher phase limit; and determine a phase scanning interval based on the lower phase limit and the higher phase limit.

[0034] In conjunction with the second aspect, in one feasible implementation, the transmitting antenna array includes m antenna elements, the phase scanning interval includes m phase intervals, and one antenna element corresponds to one phase interval; the first control phase includes m first phases; the processing module is further configured to: determine any one antenna element from the m antenna elements as the first antenna element, and based on the control module, shut down the excitation signal input of the other m-1 antenna elements besides the first antenna element; sequentially select each of the other m-1 antenna elements as the antenna element to be optimized, and determine the first phase from the m phase intervals. The antenna vibrator to be optimized corresponds to a first phase interval; the control module is further configured to control the antenna vibrator to be optimized to transmit a third microwave based on each control phase included in the first phase interval, and receive each third power indication information fed back by the target receiver based on the third microwave of each control phase; the processing module is further configured to determine a second phase from the first phase interval according to each third power indication information, and determine a second control phase according to the first phase corresponding to the first antenna vibrator in the m first phases, and the second phase determined when each of the other m-1 antenna vibrators is the antenna vibrator to be optimized.

[0035] In conjunction with the second aspect, in one feasible implementation, the processing module is further configured to: determine a target third power indication information from each of the third power indication information, wherein the received power indicated by the target third power indication information is the maximum received power among the received powers indicated by each of the third power indication information; and determine the control phase corresponding to the target third power indication information as a second phase from the first phase interval.

[0036] In conjunction with the second aspect, in one feasible implementation, the control module is further configured to, when determining that the motion state of the target receiver is a moving state, transmit a beam to the target area and the associated area of ​​the target area based on the transmitting antenna array, and receive each fourth power indication information fed back by the target receiver; the processing module is further configured to determine a second control phase based on each fourth power indication information.

[0037] In conjunction with the second aspect, in one feasible implementation, the processing module is further configured to: determine a target fourth power indication information from the fourth power information, wherein the received power indicated by the target fourth power indication information is the maximum received power among the received powers indicated by the fourth power indication information; and when the power difference between the received power indicated by the first power indication information and the received power indicated by the target fourth power indication information is less than a third preset power threshold, determine the control phase corresponding to the target fourth power indication information as a second control phase.

[0038] Thirdly, embodiments of this application provide a wireless charging device. The wireless charging device includes a memory, a transmitting antenna array, and a controller; wherein the memory, transmitting antenna array, and controller are connected via a communication bus, or the controller and transmitting antenna array are coupled to the memory. The memory stores a set of program code, and the controller calls the program code stored in the memory to execute the microwave transmission method provided by the first aspect and / or any possible implementation of the first aspect, thus achieving the beneficial effects of the method provided in the first aspect.

[0039] Fourthly, embodiments of this application provide a computer-readable storage medium storing instructions that, when executed on a wireless charging device, cause the wireless charging device to perform the microwave transmission method provided by the first aspect and / or any possible implementation of the first aspect, thereby achieving the beneficial effects of the method provided in the first aspect.

[0040] Fifthly, embodiments of this application provide a microwave transmitting device, which may be a single chip or multiple chips working in concert. The microwave transmitting device includes an input device coupled to the microwave transmitting device (e.g., the chip) for executing the technical solution provided in the first aspect of this application. It should be understood that "coupling" here refers to two components being directly or indirectly connected to each other. This connection can be fixed or movable, and can allow communication between the two components for fluid flow, electricity, electrical signals, or other types of signals.

[0041] In a sixth aspect, embodiments of this application provide a computer program product containing instructions. When the computer program product is run on a wireless charging device, it causes the wireless charging device to execute the microwave transmission method provided in the first aspect, thereby achieving the beneficial effects of the method provided in the first aspect.

[0042] In the microwave transmission method provided in this application, a region scan is performed based on the transmitted beam of the transmitting antenna array, and the target region is determined based on the first power indication information fed back by the target receiver. The first power indication information indicates the received power of the target receiver; when scanning the target region with the transmitted beam, the received power of the target receiver is greater than when scanning other regions besides the target region. The excitation signal control phase of the transmitting antenna array transmitting the beam to the target region is a first control phase. Based on the first control phase, the transmitting antenna array is controlled to continuously transmit a first microwave to the target region, and the second power indication information fed back by the target receiver based on the first microwave is received. The motion state of the target receiver is determined according to the second power indication information and the first power indication information. Based on the operating state of the target receiver, the second control phase of the transmitted beam of the transmitting antenna array is determined, and the transmitting antenna array is controlled to continuously transmit a second microwave based on the second control phase. Using the method provided in this application, the efficiency of wireless power transmission can be improved, its applicability enhanced, and costs reduced. Attached Figure Description

[0043] Figure 1 This is a schematic diagram of the architecture of a microwave wireless power transmission system;

[0044] Figure 2 This is a schematic diagram of beamforming directions corresponding to different phase differences;

[0045] Figure 3 This is a schematic diagram of the architecture of the MPT directional launch system;

[0046] Figure 4 This is a schematic flowchart of a microwave transmission method provided in an embodiment of this application;

[0047] Figure 5 This is a schematic diagram of the structure of the transmitting antenna array provided in the embodiments of this application;

[0048] Figure 6 This is a schematic diagram of the main beam direction of the transmitting antenna array provided in the embodiments of this application;

[0049] Figure 7 These are schematic diagrams illustrating different division methods provided in the embodiments of this application;

[0050] Figure 8 These are schematic diagrams of different transmitting antenna arrays;

[0051] Figure 9 This is a schematic diagram of an application scenario for determining a target area based on region scanning.

[0052] Figure 10 This is a schematic diagram of the beam superposition result provided in the embodiments of this application;

[0053] Figure 11 This is a schematic diagram of a phase optimization scenario provided in an embodiment of this application;

[0054] Figure 12 This is a schematic diagram of an associated region provided in an embodiment of this application;

[0055] Figure 13 This is another schematic flowchart of the microwave transmission method provided in the embodiments of this application;

[0056] Figure 14 This is a schematic diagram of the structure of a microwave transmitting device provided in an embodiment of this application;

[0057] Figure 15 This is a schematic diagram of the structure of a wireless charging device provided in an embodiment of this application. Detailed Implementation

[0058] In recent years, with the development of electronic science and technology, consumer electronics have become increasingly important in our lives. However, existing charging methods, mostly cable-based, are far from meeting people's needs. Furthermore, with the development of the Internet of Things (IoT) technology in recent years, wireless sensing networks are becoming a growing trend. Since wireless sensing networks contain numerous nodes (e.g., sensor nodes), and these nodes need to monitor and process the data in real time, using batteries to power so many nodes presents a significant challenge due to the limited capacity and lifespan of batteries. Based on these application needs, wireless power transmission (WPT) technology has received increasing attention in recent years. In essence, wireless power transmission technology transmits electrical energy wirelessly.

[0059] Currently, wireless power transfer technologies can be categorized into four basic types based on their implementation principles: electromagnetic induction, magnetic resonance, microwave radiation (MPT), and electric field coupling. Compared to the other methods, microwave radiation offers advantages such as long transmission distance, automatic transmission anytime and anywhere, flexible and controllable direction, and ease of miniaturization. Please see [link to relevant documentation]. Figure 1 , Figure 1 This is a schematic diagram of the architecture of a microwave wireless power transmission system. (Example:) Figure 1 As shown, a microwave wireless power transmission system mainly consists of a transmitter and a receiver. The transmitter converts direct current (DC) into microwaves, transmitting the microwave signal as radio frequency energy through its transmitting antenna into the air for free space transmission. The receiver converts the received microwave signal back into DC. In other words, a microwave wireless power transmission system is a DC-microwave-DC power transmission system.

[0060] Understandably, the core technologies for microwave wireless power transmission include: a high-efficiency microwave power source, a high-gain, highly directional microwave transmitting antenna, and a high-efficiency rectifier antenna at the receiving end. To achieve directional beam transmission of microwave energy at the transmitting end (or directional microwave power transmission) and arbitrary control of the transmission direction, phased array technology can be used. Understandably, each antenna in a phased array can be independently powered, and multiple antennas can be superimposed to achieve a very high power output. Simultaneously, by controlling the amplitude and phase of the feed to each antenna, the radiation direction of the antenna for microwave power can be adjusted, thus ultimately achieving high-power, long-distance, and directional power transmission. Specifically, according to antenna array theory, the phase difference radiated by each antenna array element in the transmitting antenna array at the microwave transmitting end determines the beamforming and beam pointing, which affects the system's transmission efficiency. Therefore, it is necessary to adjust the phase of the antenna array elements at the microwave transmitting end to increase the received power, thereby improving the efficiency of wireless power transmission.

[0061] For example, please see Figure 2 , Figure 2 This is a schematic diagram showing the beamforming directions corresponding to different phase differences. For example... Figure 2 As shown in (a), when the phase difference of the radiation from each antenna array element in the transmitting antenna array is 0°, the direction of beamforming (or the main beam direction of the transmitting antenna array or the transmitting antenna angle) is 0°; when the phase difference of the radiation from each antenna array element in the transmitting antenna array is 70°, the direction of beamforming is 20°; and when the phase difference of the radiation from each antenna array element in the transmitting antenna array is -70°, the direction of beamforming is -15°. Figure 2 As shown in (b), when the phase difference of radiation from each antenna array element in the transmitting antenna array is 0°, the direction of beamforming is 0°; when the phase difference of radiation from each antenna array element in the transmitting antenna array is 50°, the direction of beamforming is 10°; and when the phase difference of radiation from each antenna array element in the transmitting antenna array is -50°, the direction of beamforming is -20°.

[0062] Understandably, for MPT systems with phase control capabilities, there are many methods to achieve directional microwave power transmission. For example, direction backtracking technology or image processing technology can be used to obtain the target's position information at the receiving end, thereby changing the microwave power transmission direction (using mechanical rotation or electrical control) to achieve directional transmission. Alternatively, other information can be used to determine whether the target is located at the set directional transmission angle. Regardless of the method, overall, MPT directional transmission systems possess advantages such as... Figure 3 The architecture shown. Please refer to [link / reference]. Figure 3 , Figure 3 This is a schematic diagram of the architecture of the MPT directional launch system. (Example) Figure 3As shown, the transmitter converts DC input into microwave power output and transmits the power externally through a transmitting antenna. The receiving antenna and receiver convert the captured energy into DC power to supply the load. To achieve directional transmission, related technologies require the receiver to wirelessly feed back necessary information. For example, direction backtracking technology uses an additional antenna to send navigation / guidance signals, and the receiver similarly uses an additional antenna to receive these signals and calculate relative position information. Therefore, the receiver must provide a means (or the transmitter must have a means) to obtain the feedback information required to implement a specific directional transmission algorithm. However, this scheme, which determines the beam transmission angle based on the acquired position coordinates, increases the size of the receiver, resulting in high implementation costs and poor applicability. Especially for the small-sized receivers in Internet of Things (IoT) scenarios, installing an antenna capable of actively transmitting guidance signals is impractical. Therefore, how to perform directional microwave power transmission without knowing the receiver's position coordinates to improve the efficiency of wireless energy transmission has become one of the urgent problems to be solved.

[0063] Based on this, this application proposes a microwave transmission method that uses an active transmitting beam from a transmitting antenna array to scan a region and uses the received power fed back from the target receiver to determine the target region, thereby reducing costs. Furthermore, the motion state of the target receiver is determined by the magnitude of the received power fed back from the target receiver, and phase optimization is performed based on different motion states of the target receiver, which improves the efficiency of wireless power transmission and enhances the applicability of the solution.

[0064] For details, see Figure 4 , Figure 4 This is a schematic flowchart of a microwave transmission method provided in an embodiment of this application. It is understood that the microwave transmission method provided in this application is applicable to a microwave transmitting end, or transmitter. Figure 4 As shown, the microwave transmission method includes, but is not limited to, the following steps:

[0065] S401. Perform area scanning based on the transmitted beam of the transmitting antenna array, and determine the target area based on the first power indication information fed back by the target receiver.

[0066] In some feasible implementations, the transmitting end can perform area scanning based on the transmitted beam from the transmitting antenna array and determine the target area based on the first power indication information fed back by the target receiver. The first power indication information indicates the received power of the target receiver; when scanning the target area with the transmitted beam, the received power of the target receiver is greater than when scanning other areas besides the target area. The excitation signal control phase of the transmitted beam from the transmitting antenna array to the target area is the first control phase. The transmitting antenna array can be a phased array antenna, or any other MPT transmitting array with independent phase control functionality. In other words, this application controls the direction of the main beam of the transmitting antenna by controlling the phase of each antenna element in the transmitting antenna array. Please refer to [link to relevant documentation]. Figure 5 , Figure 5 This is a schematic diagram of the transmitting antenna array provided in an embodiment of this application. Figure 5 As shown, the transmitting antenna array includes m antenna elements, designated as antenna element 1 to antenna element m. The controller can input different control phases (e.g., ...) to the m power amplifiers included in the power amplifier array. Figure 5 The excitation signals (phases 1 to 1) shown are amplified by a power amplifier array. Based on the excitation signals of the m control phases, the beam transmission of the m antenna elements in the transmitting antenna array can be controlled, thereby controlling the direction of the main beam of the transmitting antenna. Please refer to [further details omitted]. Figure 6 , Figure 6 This is a schematic diagram of the main beam direction of the transmitting antenna array provided in an embodiment of this application. For example... Figure 6 Image (a) is a side view of the main beam direction of the transmitting antenna array, as shown below. Figure 6 (b) is a top view of the main beam direction of the transmitting antenna array. Figure 6 The beamforming direction shown is for the vertical transmitting antenna array.

[0067] Understandably, when the application scenario of this application embodiment is to charge a single receiver, that is, when the effective scanning area of ​​the transmitting antenna array includes only one receiver, the target receiver is that single receiver. Understandably, when this application embodiment is applicable to charging multiple receivers, that is, when the effective scanning area of ​​the transmitting antenna array includes two or more receivers, the target receiver is the directional object for this charging. For example, suppose the effective scanning area of ​​the transmitting antenna array includes three receivers: receiver 1, receiver 2, and receiver 3. Wherein, if the charging object is receiver 1, then the target receiver is receiver 1; if the charging object is receiver 2, then the target receiver is receiver 2; and if the charging object is receiver 3, then the target receiver is receiver 3. In specific implementation, when there are multiple receivers (i.e., at least two receivers), the target receiver can be determined sequentially from among the multiple receivers based on the remaining power information fed back to the transmitting end by each receiver, or the target receiver can be determined sequentially based on the charging priority of each receiver, etc., without limitation. For example, when the transmitter receives remaining battery information from each of multiple receivers, it can determine the receiver with the least remaining battery as the target receiver based on this information. Furthermore, if the target receiver subsequently meets the charging completion conditions, a new target receiver can be identified from the remaining uncharged receivers, thus continuously providing charging services to all receivers within the effective scanning area. Understandably, the effective scanning area of ​​the transmitter's antenna array is fixed. However, the effective scanning areas of different transmitter antenna arrays can differ.

[0068] Understandably, the power indication information fed back by the receiving end in this application can be either the received power value of the receiving end or a scattered signal including modulation information fed back by the receiving end. If the power indication information fed back by the receiving end is simply the received power value, the transmitting end can determine the received power of the receiving end based on the received power value. If the power indication information fed back by the receiving end is a scattered signal including modulation information, the transmitting end can roughly determine the received power by detecting the intensity of the scattered signal. That is, the receiving end can send one or more of the following information to the transmitting end via Wi-Fi or Bluetooth transmission: its remaining battery power, its identification information, and the received power value. Alternatively, the receiving end can also use the scattered signal reflected by the receiving end to represent the received power without communicating with the transmitting end. The intensity of the scattered signal reflected by the receiving end is directly proportional to the received power of the receiving end; that is, the stronger the scattered signal, the greater the received power of the receiving end; the weaker the scattered signal, the smaller the received power of the receiving end. Understandably, when the received power of the receiver is indirectly reflected by the scattered signal, the receiver's identification information, remaining battery power information, and other information can be carried in the scattered signal through modulation.

[0069] Specifically, in some feasible implementations, the above-mentioned area scanning based on the transmitted beam of the transmitting antenna array and the determination of the target area based on the first power indication information fed back by the target receiver can be understood as follows: when performing the i-th area scan based on the transmitted beam of the transmitting antenna array, a beam is transmitted to a designated area based on the transmitting antenna array, and at least two power indication information fed back by the target receiver is received. Here, the designated area is at least two sub-regions within the first area determined during the (i-1)-th area scan, and one power indication information is used to indicate the received power of the target receiver when scanning a sub-region. Based on the at least two power indication information, the sub-region with the highest received power of the target receiver is determined from the at least two sub-regions and is used as the first area determined by the i-th area scan. When the power difference between the received power of the first region determined by the i-th region scan and the received power of the first region determined by the (i-1)-th region scan is greater than a first preset power threshold, the (i+1)-th region scan is performed based on the transmit beam of the transmit antenna array until the power difference between the received power of the first region determined by the (i+j)-th region scan and the received power of the first region determined by the (i+j-1)-th region scan is not greater than the first preset power threshold. Then, the first region determined by the (i+j)-th region scan is designated as the target region. Here, "not greater than" can be understood as "less than or equal to," meaning that when the power difference between the received power of the first region determined by the (i+j)-th region scan and the received power of the first region determined by the (i+j-1)-th region scan is less than or equal to the first preset power threshold, the first region determined by the (i+j)-th region scan is designated as the target region where the target receiver is located. Optionally, when the power difference between the received power of the first region determined by the i-th region scan and the received power of the first region determined by the (i-1)-th region scan is not less than (i.e., greater than or equal to) a first preset power threshold, the (i+1)-th region scan is performed based on the transmitted beam of the transmitting antenna array until the power difference between the received power of the first region determined by the (i+j)-th region scan and the received power of the first region determined by the (i+j-1)-th region scan is less than the first preset power threshold. Then, the first region determined by the (i+j)-th region scan is defined as the target region. Here, i is an integer greater than 1, and j is an integer greater than 0.

[0070] Understandably, when i=1, i.e., during the first region scan, the designated region scanned is at least two sub-regions obtained by dividing the effective scan area of ​​the transmit antenna array. The method of dividing the effective scan area into at least two sub-regions is not limited. For example, please refer to... Figure 7 , Figure 7 This is a schematic diagram illustrating different partitioning methods provided in the embodiments of this application. Specifically, for the effective scanning area of ​​the transmitting antenna array, the effective scanning area can be divided into at least two sub-regions along only the horizontal direction, such as... Figure 7 Subregions 1 to 4 are shown in (a). Optionally, for the effective scanning area of ​​the transmitting antenna array, the effective scanning area can be divided into at least two subregions only along the vertical direction, such as... Figure 7 Subregions 1 to 4 are shown in (b). Optionally, for the effective scanning area of ​​the transmitting antenna array, the effective scanning area can be divided both horizontally and vertically to obtain at least two subregions, such as... Figure 7 Subregions 1 to 4 shown in (c) are not restricted here.

[0071] Understandably, different types of transmit antenna arrays have different scanning capabilities; for example, please refer to [link to relevant documentation]. Figure 8 , Figure 8 These are schematic diagrams of different transmitting antenna arrays. For example... Figure 8 The transmitting antenna array shown in (a) is a two-dimensional patch transmitting array. The beam emitted by this array can scan along two perpendicular directions. Generally, this type of two-dimensional patch transmitting array is suitable for scenarios where the receiving target has a large range of movement and longitudinal motion. Figure 8 The transmitting antenna array shown in (b) is a series-fed transmitting array. Generally, series-fed transmitting arrays can achieve horizontal scanning, or lateral scanning, which is suitable for most indoor power transmission needs. Therefore, when the transmitting antenna array used is a two-dimensional patch transmitting array, during the area scanning phase, the area division method can be along only the horizontal direction, or only the vertical direction, or both horizontally and vertically; there is no limitation here. When the transmitting antenna array used is a series-fed transmitting array, during the area scanning phase, the area division method is usually along only the horizontal direction. For ease of description, in this embodiment, when the transmitting antenna array is a two-dimensional patch transmitting array, the example is that the area division method is along both the horizontal and vertical directions.

[0072] Understandably, when i is an integer greater than 1, for example, when i = 2, i.e., during the second region scan, the specified region scanned is at least two sub-regions included in the first region determined in the first scan. Specifically, the first region determined in the first region scan is the sub-region that, when scanning at least two sub-regions constituting the effective scan region, results in the target receiver reporting the maximum received power. In other words, the first region determined in the first region scan is one of the at least two sub-regions constituting the effective scan region, and when scanning this sub-region, the received power reported by the target receiver is greater than the received power when scanning other sub-regions constituting the at least two sub-regions constituting the effective scan region. Understandably, during the i-th region scan, the division method of the first region determined in the (i-1)-th region scan can be the same as the division method and the number of sub-regions in the previous (i-1)-th scans, or it can be different from the division method and / or the number of sub-regions in the previous (i-1)-th scans; no restrictions are placed here. For example, taking i=2 as an example, during the second region scan, the designated region scanned is at least two sub-regions obtained by dividing the first region determined in the first scan. Here, it is assumed that the transmitting antenna array is a two-dimensional patch transmitting array, and that during the first region scan, the effective scanning area is divided into a 4-grid (i.e., the effective scanning area is equally divided into two regions horizontally and two regions vertically, resulting in four equally sized sub-regions, such as...). Figure 7 As shown in (c), when dividing the first region determined by the first scan, it can be divided into 4 sub-regions equally along the horizontal direction, or into 6 sub-regions, or into a 4-grid or 9-grid, etc., without limitation. For ease of description, the following embodiment of this application will be illustrated using the example where the region division method and the number of sub-regions are the same for each region scan.

[0073] For example, please see Figure 9 , Figure 9 This is a schematic diagram illustrating an application scenario for determining a target area based on area scanning. The example used is a two-dimensional patch transmitter array. Figure 9 As shown, the effective scanning area of ​​the transmitting antenna array is the effective scanning area S. During the first area scan, the effective scanning area can be divided into 9 sub-regions (e.g., ...). Figure 9 (Based on the nine-square grid area divided by line 1). In other words, the designated area for the first area scan is as follows: Figure 9The diagram shows nine sub-regions divided by line 1. Therefore, beams can be transmitted to designated areas using the transmitting antenna array, and nine power indication messages fed back from the target receiver can be received. One of these power indication messages indicates the received power of the target receiver when scanning a sub-region. Understandably, when transmitting beams directionally to each sub-region, the beam can be transmitted towards the center of each sub-region, and the power indication message fed back from the target receiver when transmitting beams directionally to each sub-region can be received. Therefore, based on the received nine power indication messages, the sub-region with the highest received power from the nine sub-regions divided by line 1 can be determined as the first region determined in the first region scan. Figure 9 As shown, assuming the first region identified by the first region scan is the sub-region in the first row and second column, then during the second region scan, this first region can be further divided into 9 sub-regions (e.g., ...). Figure 9 The system uses a 3x3 grid (divided by line 2) and transmits beams to the center of each sub-region within the 3x3 grid using the transmitting antenna array. It also receives nine power indication messages from the target receiver during the second region scan. Further, based on the nine power indication messages received during the second region scan, the sub-region with the highest received power from the target receiver is determined from the 3x3 grid, and this is designated as the first region determined by the second region scan. When the power difference between the received power of the first region determined by the second region scan and the received power of the first region scan is not greater than (i.e., less than or equal to) a first preset power threshold, the first region determined by the second region scan is designated as the target region where the target receiver is located. Correspondingly, when the power difference between the received power of the first region determined by the second region scan and the received power of the first region scan is greater than the first preset power threshold, a third region scan is performed using the transmitting antenna array. Understandably, during the third area scan, the first area determined by the second area scan can be further divided into a 9-grid. A beam is then directionally transmitted to the center of each grid (i.e., sub-region) in the newly divided 9-grid, and the target receiver receives 9 power execution information feedbacks based on the third area scan. The method for determining the first area corresponding to the third area scan can refer to the method for determining the first area corresponding to the first area scan or the method for determining the first area corresponding to the second area scan, which will not be repeated here. The first area determined by the (i+j)th area scan is determined as the target area when the power difference between the received power of the first area determined by the (i+j)th area scan and the received power of the first area determined by the (i+j-1)th area scan is not greater than the first preset power threshold. Here, i is an integer greater than 1 and j is an integer greater than 0.

[0074] Optionally, in some feasible implementations, the above-described area scanning based on the transmitted beam of the transmitting antenna array and the determination of the target area based on the first power indication information fed back by the target receiver can also be understood as follows: when performing the i-th area scan based on the transmitted beam of the transmitting antenna array, a beam is transmitted to a designated area based on the transmitting antenna array, and at least two power indication information fed back by the target receiver is received. Here, the designated area is at least two sub-regions within the first area determined during the (i-1)-th area scan, and one power indication information is used to indicate the received power of the target receiver when scanning a sub-region, where i is an integer greater than 1. Based on the at least two power indication information, the sub-region with the highest received power of the target receiver is determined from the at least two sub-regions and used as the first area determined during the i-th area scan. When the power difference between the received power of the first region determined by the i-th region scan and the received power of the first region determined by the (i-1)-th region scan is greater than a first preset power threshold, and the area of ​​the designated region corresponding to the i-th region scan is greater than a first preset area, the (i+1)-th region scan is performed based on the transmitted beam of the transmitting antenna array. This continues until the power difference between the received power of the first region determined by the (i+j)-th region scan and the received power of the first region determined by the (i+j-1)-th region scan is no greater than the first preset power threshold, and / or the area of ​​the designated region corresponding to the (i+j)-th region scan is no greater than the first preset area. At this point, the first region determined by the (i+j)-th region scan is designated as the target region, where j is an integer greater than 0. It is easy to understand that by using the area of ​​the sub-regions divided during each region scan as the condition for ending the region scan, the efficiency of the region scan can be further accelerated, and the processing efficiency can be further improved.

[0075] Optionally, in some feasible implementations, to compensate for potential deviations caused by poor accuracy in the (i-1)th region scan, in this embodiment of the application, the first region determined by the (i-1)th region scan may be slightly enlarged during the i-th region scan, and then further divided into at least two sub-regions based on the enlarged first region for the i-th region scan. The enlarged area of ​​the first region determined by the (i-1)th region scan can be determined according to the actual application scenario and is not limited here.

[0076] S402. Based on the first control phase, the transmitting antenna array continuously transmits the first microwave to the target area and receives the second power indication information based on the feedback of the first microwave from the target receiver.

[0077] In some feasible implementations, after determining the target area, the transmitting end can control the transmitting antenna array based on a first control phase to continuously transmit a first microwave towards the target area, and receive second power indication information fed back by the target receiving end based on the first microwave. That is, after determining the target area, the transmitting end can continuously transmit a beam towards the center position of the target area based on the transmitting antenna array to receive the power indication information fed back by the target receiving end, i.e., the second power indication information. This second power indication information indicates the current received power of the target receiving end.

[0078] Understandably, since each of the m antenna elements (or each antenna path) in the transmitting antenna array can be independently powered, the superposition of multiple paths can achieve a very high power output. Simultaneously, by controlling the amplitude and phase of the power supply to each antenna path, the radiation direction of the antenna for microwave power can be adjusted, thus achieving high-power, long-distance, and directional power transmission. Therefore, the first control phase includes m first phases, and one first phase is used to control the transmitted beam of one antenna element in the transmitting antenna array. The superposition of the m beams emitted by the m antenna elements determines the main beam direction of the transmitting antenna array. In other words, in this application, by controlling the transmitted beam of the corresponding antenna element through each first phase in the first control phase, the main beam direction of the transmitting antenna array can be made to point towards the center of the target area. Here, m is an integer greater than 1.

[0079] S403. Determine the motion state of the target receiver based on the second power indication information and the first power indication information, determine the second control phase of the transmitting antenna array's transmitting beam based on the operating state of the target receiver, and control the transmitting antenna array to continuously transmit the second microwave based on the second control phase.

[0080] In some feasible implementations, the transmitting end can determine the motion state of the target receiving end based on the second power indication information and the first power indication information, and then determine the second control phase of the transmitting antenna array's transmit beam based on the operating state of the target receiving end, so as to control the transmitting antenna array to continuously transmit the second microwave based on the second control phase. Understandably, when the target receiving end feeds back the received power magnitude to the transmitting end via communication, the target receiving end can feed back its received power value (i.e., the second power indication information) to the transmitting end at a preset frequency. For example, the target receiving end can feed back the received power magnitude to the transmitting end once every 1 second, etc., without limitation. Optionally, when the target receiving end feeds back the received power magnitude to the transmitting end via non-communication (i.e., indirectly representing the received power magnitude through reflected and scattered signals), the target receiving end can continuously feed back scattered signals (i.e., the second power indication information) to the transmitting end. Accordingly, the transmitting end can receive each second power indication information fed back by the target receiving end, and for each received second power indication information, determine the absolute value of the power difference between each second power indication information and the first power indication information. Specifically, when the absolute value of the power difference between the received n consecutive second power indication messages and the first power indication message is not greater than (i.e., less than or equal to) a second preset power threshold, the motion state of the target receiving end is determined to be stationary. When the absolute value of the power difference between any received second power indication message and the first power indication message is greater than the second preset power threshold, the motion state of the target receiving end is determined to be moving. Alternatively, when the absolute value of the power difference between the received n consecutive second power indication messages and the first power indication message is less than the second preset power threshold, the motion state of the target receiving end is determined to be stationary. When the absolute value of the power difference between any received second power indication message and the first power indication message is not less than (i.e., greater than or equal to) the second preset power threshold, the motion state of the target receiving end is determined to be moving. In other words, for each received second power indication message, the absolute value of the power difference between the second power indication message and the first power indication message can be determined, that is, the absolute value of the power difference between the received power indicated by the second power indication message and the received power indicated by the first power indication message is calculated. For example, assuming the received power indicated by any second power indication message received by the transmitter is 10 watts, and the received power indicated by the first power indication message is 18 watts, then the absolute value of the power difference between the second and first power indication messages can be determined to be 8 watts. Furthermore, the relationship between the determined absolute value of the power difference and a pre-set second preset power threshold is determined. Generally, when it is determined that the absolute value of the power difference between n consecutive received second power indication messages and the first power indication message is not greater than the second preset power threshold, the motion state of the target receiver is determined to be a stationary state.Alternatively, when it is determined that the absolute value of the power difference between any second power indication information and the first power indication information is greater than the second preset power threshold, the motion state of the target receiver is determined to be a moving state.

[0081] In some feasible implementations, when the target receiver is determined to be stationary, a first preset phase value can be obtained. Based on the first control phase and the first preset phase value, a phase scanning interval is determined. Then, a second control phase is determined from the phase scanning interval. That is, when the transmitter determines the target receiver to be stationary, the transmitter can adjust the control phase of the transmitting antenna array based on the first control phase, so that the beam transmitted based on the transmitting antenna array is more accurately aligned with the target receiver. For example, please refer to... Figure 10 , Figure 10 This is a schematic diagram of the beam superposition result provided in an embodiment of this application. For example... Figure 10 As shown, assuming the superposition of beams emitted by the transmitting antenna array based on a certain control phase is as follows: Figure 10 As shown in (a), by Figure 10 As shown in (a), the beam superposition result is rather chaotic (i.e., the beams are not concentrated enough to be aligned directly in front after superposition). Therefore, by optimizing the control phase of the transmitting antenna array, the superposition result of the transmitted beams can be made more regular, such as... Figure 10 As shown in (b), the beams can be more focused and aligned directly in front after being superimposed.

[0082] Understandably, each of the m antenna elements in the transmitting antenna array (or each antenna path) can be independently powered. Multiple paths can be superimposed to achieve a high power output. Furthermore, by controlling the amplitude and phase of the feed to each antenna path, the radiation direction of the antenna for microwave power can be adjusted. Therefore, high-power, long-distance, and directional power transmission can ultimately be achieved. This application's embodiments discuss a scheme for achieving directional microwave transmission by controlling the phase of the feed to each antenna element, thereby adjusting the direction of the main beam of the transmitting antenna. Specifically, according to antenna array theory, the phase difference of the radiation from each antenna element in the transmitting antenna array at the microwave transmitter determines the beamforming and beam pointing. Therefore, when performing phase optimization, it is necessary to optimize the control phase of each antenna element individually.

[0083] Understandably, determining the phase scanning interval based on the first control phase and the first preset phase value can be interpreted as follows: the difference between the first control phase and the first preset phase value is determined as the lower phase limit, and the sum of the first control phase and the first preset phase value is determined as the upper phase limit. The phase scanning interval is then determined based on the lower and upper phase limits. Here, the transmitting antenna array includes m antenna elements, and the first control phase includes m first phases. Therefore, based on the m first phases, m phase intervals can be determined, meaning the phase scanning interval includes m phase intervals, and one antenna element corresponds to one phase interval. For example, suppose m = 9, meaning the transmitting antenna array includes 9 antenna elements, namely antenna element 1 to antenna element 9. Suppose that when transmitting a beam towards the center of the target area based on the transmitting antenna array, the first phase corresponding to antenna element 1 is 0°, the first phase corresponding to antenna element 2 is 30°, the first phase corresponding to antenna element 3 is 60°, the first phase corresponding to antenna element 4 is 30°, the first phase corresponding to antenna element 5 is 60°, the first phase corresponding to antenna element 6 is 90°, the first phase corresponding to antenna element 7 is 60°, the first phase corresponding to antenna element 8 is 90°, and the first phase corresponding to antenna element 9 is 120°. Assuming the first preset phase value is 5, then the phase interval corresponding to antenna element 1 is [-5°, 5°], the phase interval corresponding to antenna element 2 is [25°, 35°], the phase interval corresponding to antenna element 3 is [55°, 65°], the phase interval corresponding to antenna element 4 is [25°, 35°], the phase interval corresponding to antenna element 5 is [55°, 65°], the phase interval corresponding to antenna element 6 is [85°, 95°], the phase interval corresponding to antenna element 7 is [55°, 65°], the phase interval corresponding to antenna element 8 is [85°, 95°], and the phase interval corresponding to antenna element 9 is [115°, 125°].

[0084] In some feasible implementations, before performing phase optimization on the m antenna elements of the transmitting antenna array, it is first necessary to determine any one of the m antenna elements as the first antenna element, and then disable the excitation signal input for the other m-1 antenna elements. Alternatively, the excitation signal input for the m antenna elements can be disabled first, then any one of the m antenna elements can be determined as the first antenna element, and the first antenna element can be controlled to transmit the beam corresponding to the first phase based on the first phase corresponding to that first antenna element. Determining the second control phase from the phase scanning interval can be understood as: sequentially selecting each of the other m-1 antenna elements as the antenna element to be optimized, and determining the first phase interval corresponding to the antenna element to be optimized from the m phase intervals. Based on the control phases included in the first phase interval, the antenna element to be optimized is controlled to transmit a third microwave, and the third power indication information fed back by the target receiver based on the third microwave of each control phase is received. The second phase is determined from the first phase interval based on each third power indication information. The second control phase is then determined based on the first phase corresponding to the first antenna element among the m first phases, and the second phase determined when each of the other m-1 antenna elements is used as the antenna element to be optimized. Determining the second phase from the first phase interval based on each third power indication information can be understood as determining the target third power indication information from each third power indication information. The received power indicated by the target third power indication information is the maximum received power among all received powers indicated by each third power indication information. The control phase corresponding to the target third power indication information is determined as the second phase from the first phase interval. It is easy to understand that in this embodiment, when other unoptimized antenna elements in the transmit antenna array undergo phase optimization, the first antenna element will continuously transmit beams using its corresponding first phase, and the optimized antenna element will continuously transmit beams using its optimized control phase (i.e., the second phase). In other words, the activated antenna element will remain activated throughout the subsequent process.

[0085] For example, please see Figure 11 , Figure 11 This is a schematic diagram of a phase optimization scenario provided in an embodiment of this application. Assume the target region is the first region determined during the second region scan (e.g., ...). Figure 11(The target area is shown). To ensure the beam superposition of the transmitting antenna array is aligned with the center of the target area, the control phases of antenna elements 1 to 9 in the transmitting antenna array are 0°, 30°, 90°, 30°, 60°, 90°, 60°, 90°, and 120°, respectively. That is, the first control phase includes nine first phases: 0° for antenna element 1, 30° for antenna element 2, 60° for antenna element 3, 30° for antenna element 4, 60° for antenna element 5, 90° for antenna element 6, 60° for antenna element 7, 90° for antenna element 8, and 120° for antenna element 9. In phase optimization, the excitation of all antenna elements in the transmitting antenna array must first be turned off. After turning off all excitations, one antenna element is selected from the m antenna elements as the first antenna element. Let's assume the first antenna element is antenna element 9. The transmitting beam of antenna element 9 can be controlled based on its control phase (120°) before being turned off. Then, each of the other eight antenna elements (antenna elements 1 to 8) is sequentially selected as the antenna element to be optimized. For example, assuming the antenna element to be optimized is antenna element 3, the control phase corresponding to antenna element 3 can be determined from its corresponding phase interval. Understandably, the phase interval corresponding to antenna element 3 is [55°, 65°]. Specifically, antenna element 3 can be controlled to transmit a third microwave based on the control phases included in the phase interval [55°, 65°], and the third power indication information fed back by the target receiver based on each control phase of the third microwave can be received. For example, the antenna element 3 can be controlled to transmit a beam based on 21 control phases: 55°, 55.5°, 56°, 56.5°, 57°, 57.5°, 58°, 58.5°, 59°, 59.5°, 60°, 60.5°, 61°, 61.5°, 62°, 62.5°, 63°, 63.5°, 64°, 64.5°, and 65°. It also receives 21 third power indication messages from the target receiver based on these 21 control phases. Furthermore, based on the received 21 power indication messages, the control phase that maximizes the received power from the target receiver is determined as the second phase. For example, assuming that the maximum received power among the above 21 third power indication information is the received power fed back by the target receiver based on the third microwave with a control phase of 60°, the control phase of 60° can be determined as the second phase corresponding to the antenna element 3, that is, the second phase corresponding to the antenna element 3 is 60°.Furthermore, one antenna element can be selected from the remaining seven closed antenna elements (i.e., antenna element 1, antenna element 2, antenna elements 4 to 8) as the antenna element to be optimized. Phase optimization is performed using the same method as for antenna element 3, and will not be repeated here. This process is repeated for all antenna elements in the transmitting antenna array. Assuming the second phases corresponding to antenna elements 1 to 8 are 2°, 31°, 60°, 34°, 59°, 92.5°, 61.5°, and 93.5° respectively, the second control phase can be determined based on the first phase of 120° corresponding to antenna element 9 and the second phase determined when each antenna element from 1 to 8 is selected as the antenna element to be optimized. Here, the second control phases corresponding to the transmitting antenna arrays are as follows: control phase 2° for antenna element 1, control phase 31° for antenna element 2, control phase 60° for antenna element 3, control phase 34° for antenna element 4, control phase 59° for antenna element 5, control phase 92.5° for antenna element 6, control phase 61.5° for antenna element 7, control phase 93.5° for antenna element 8, and control phase 120° for antenna element 9.

[0086] In some feasible implementations, when the motion state of the target receiver is determined to be a moving state, a beam can be transmitted to the target area and its associated areas based on the transmitting antenna array, and the fourth power indication information fed back by the target receiver can be received. Then, a second control phase is determined based on each fourth power indication information. Determining the second control phase based on each fourth power indication information can be understood as: determining the target fourth power indication information from each fourth power information. When the power difference between the received power indicated by the first power indication information and the received power indicated by the target fourth power indication information is less than a third preset power threshold, the control phase corresponding to the target fourth power indication information is determined as the second control phase. Correspondingly, when the power difference between the received power indicated by the first power indication information and the received power indicated by the target fourth power indication information is not less than (i.e., greater than or equal to) the third preset power threshold, it can be assumed that the transmitter lost tracking of the target receiver during the tracking process, and therefore, cannot provide high-power electrical transmission to the target receiver. Alternatively, when the power difference between the received power indicated by the first power indication information and the received power indicated by the target fourth power indication information is not greater than (i.e., less than or equal to) a third preset power threshold, the control phase corresponding to the target fourth power indication information is determined as the second control phase. Correspondingly, when the power difference between the received power indicated by the first power indication information and the received power indicated by the target fourth power indication information is greater than the third preset power threshold, the transmitter is assumed to have lost tracking of the target receiver during the tracking process. Here, the received power indicated by the target fourth power indication information is the maximum received power among all received powers indicated by the fourth power indication information. That is, when the target receiver is determined to be a mobile receiver, the control phase of the transmitting antenna array can be adjusted in real time to achieve tracking of the target receiver. Generally, the associated region of the target area is the adjacent equally sized region surrounding the target area.

[0087] For example, please see Figure 12 , Figure 12 This is a schematic diagram of an associated region provided in an embodiment of this application. For example... Figure 12 As shown, if the target area is as follows Figure 12 If the target area is a shaded area, then the associated area is as follows: Figure 12 Regions ① to ⑧ are defined as follows. In other words, for the transmitting end, the associated region of the target area is the area centered on the target area, and the eight surrounding areas can all be considered as associated regions of the target area. In other words, for the transmitting end, when the target receiver is determined to be moving, in order to track the target receiver, it is necessary to attempt to advance the beam transmission to areas in different directions to determine the area where the target receiver is located after moving. Understandably, due to the different scanning capabilities of different types of transmitting antenna arrays, as mentioned above... Figure 8The two-dimensional patch transmitter array shown can scan both horizontally and vertically. Therefore, in practical implementation, if the transmitting antenna array is a two-dimensional patch transmitter array, the associated region of the target area is regions ① to ⑧ mentioned above. If the transmitting antenna array is a series-feed transmitter array, due to the limitation of the scanning capability of the series-feed transmitter array itself, that is, the series-feed transmitter array can only scan in one direction, as described above. Figure 8 The serial-fed transmitter array shown can only scan in the horizontal direction. Therefore, the associated regions of the target area can be region ④ and region ⑤.

[0088] Understandably, the aforementioned beam transmission from the transmitting antenna array to the target area and its associated areas can be interpreted as transmitting a beam to the center of the target area and the center of its associated areas. Furthermore, based on the received fourth power indication information from the target receiver, the target fourth power indication information representing the maximum received power is determined from these fourth power indication information. The control phase of the excitation signal that causes the target receiver to feed back the target fourth power indication information is then determined as the second control phase. Therefore, the transmitting antenna array can be controlled to continuously transmit the second microwave based on the second control phase. Further, when the transmitting antenna array is controlled to continuously transmit the second microwave based on the second control phase, power indication information fed back from the target receiver based on the second microwave can be received. For ease of description, this power indication information will be referred to as the fifth power indication information below. The motion state of the target receiver is further determined based on the fifth power indication information and the first power indication information, so that the control phase of the transmitting antenna array is continuously adjusted according to the motion state of the target receiver to achieve high-power electrical energy transmission to the target receiver.

[0089] In this embodiment, the transmitting end performs area scanning based on the transmitted beam from the transmitting antenna array and determines the target area based on the first power indication information fed back by the target receiver. The excitation signal control phase for the transmitted beam from the transmitting antenna array to the target area is the first control phase. Based on the first control phase, the transmitting antenna array is controlled to continuously transmit a first microwave towards the target area, and the second power indication information fed back by the target receiver based on the first microwave is received. The motion state of the target receiver is determined according to the second and first power indication information, and the second control phase of the transmitted beam from the transmitting antenna array is determined according to the operating state of the target receiver. Based on the second control phase, the transmitting antenna array is then controlled to continuously transmit a second microwave. Using the method provided in this embodiment can improve the efficiency of wireless power transmission, enhance applicability, and reduce costs.

[0090] For example, please see Figure 13 , Figure 13 This is another schematic flowchart of the microwave transmission method provided in the embodiments of this application. For example... Figure 13As shown, the method provided in this application embodiment includes:

[0091] Step 131: When performing the first area scan based on the transmit antenna array transmits beams to at least two sub-regions included in the effective scan area of ​​the transmitter, transmits beams based on the transmit antenna array and receives at least two power indication information fed back by the target receiver. Based on the at least two power indication information, the sub-region with the highest received power of the target receiver is determined from the at least two sub-regions included in the effective scan area, and is taken as the first area determined by the first area scan.

[0092] In some feasible implementations, when performing the first area scan based on the transmitted beam of the transmitting antenna array, the transmitting antenna array can transmit beams to at least two sub-regions included in the effective scanning area of ​​the transmitting end, and receive at least two power indication messages fed back by the target receiver. Based on these at least two power indication messages, the sub-region with the highest received power at the target receiver is determined from the at least two sub-regions included in the effective scanning area, and this sub-region is used as the first area determined by the first area scan. It is understood that during the first area scan, the designated area scanned is at least two sub-regions obtained after dividing the effective scanning area of ​​the transmitting antenna array. The method of dividing the effective scanning area into at least two sub-regions is not limited. That is, during the first area scan, N0 small areas or sub-regions can be obtained from the effective scanning area, and the center position coordinates of each sub-region can be calculated. Here, N1 is an integer greater than 1. It is understood that when the transmitting end needs to transmit directionally to a designated location, the excitation signal control phase for positioning transmission can be determined based on the position coordinates of that designated location. In other words, for any one of the N1 sub-regions, the control phase of each antenna element in the transmitting antenna array can be determined based on the center coordinates of that sub-region. This determined control phase allows the transmitting antenna array to be directed towards that sub-region, and the received power level (power indication information) is received as feedback during this directed transmission. Therefore, the transmitting end can select the region with the highest power based on the acquired N1 power indication information and record it as numbered n. 1max At this point, the first region scan is complete. Typically, the target receiver should be located in sub-region n. 1max Inside.

[0093] Step 132: When performing the i-th region scan based on the transmit antenna array transmit beam, transmit beam to the designated region based on the transmit antenna array and receive at least two power indication messages fed back by the target receiver.

[0094] Step 133: Based on the at least two power indication information obtained during the i-th region scan, determine the sub-region with the highest received power of the target receiver from the at least two sub-regions included in the first region determined by the (i-1)-th region scan, and use it as the first region determined by the i-th region scan.

[0095] Step 134: Determine whether the power difference between the received power of the first region determined by the i-th region scan and the received power of the first region determined by the (i-1)-th region scan is less than the first preset power threshold.

[0096] Step 135: If the power difference between the received power of the first region determined by the i-th region scan and the received power of the first region determined by the (i-1)-th region scan is not less than the first preset power threshold, then execute i = i + 1 and repeat step 132.

[0097] Step 136: If the power difference between the received power of the first region determined by the i-th region scan and the received power of the first region determined by the (i-1)-th region scan is less than the first preset power threshold, then the first region determined by the i-th region scan is determined as the target region, and the excitation signal control phase for transmitting the beam to the target region is determined as the first control phase.

[0098] Understandably, during the i-th region scan, the designated region being scanned comprises at least two sub-regions of the first region determined during the (i-1)-th region scan, where i > 1 and i is an integer. That is, when performing the i-th region scan based on the transmit antenna array's beam, the transmit antenna array transmits a beam towards the designated region and receives at least two power indication messages from the target receiver. Here, the designated region comprises at least two sub-regions of the first region determined during the (i-1)-th region scan, and one power indication message indicates the received power of the target receiver when scanning a sub-region, where i is an integer greater than 1. Based on the at least two power indication messages, the sub-region with the highest received power at the target receiver is determined from the at least two sub-regions and is used as the first region determined during the i-th region scan. When the power difference between the received power of the first region determined by the i-th region scan and the received power of the first region determined by the (i-1)-th region scan is greater than the first preset power threshold, the (i+1)-th region scan is performed based on the transmit beam of the transmit antenna array until the power difference between the received power of the first region determined by the (i+j)-th region scan and the received power of the first region determined by the (i+j-1)-th region scan is not greater than the first preset power threshold. Then, the first region determined by the (i+j)-th region scan is determined as the target region, where j is an integer greater than 0. Alternatively, when the power difference between the received power of the first region determined by the i-th region scan and the received power of the first region determined by the (i-1)-th region scan is greater than the first preset power threshold, and the area of ​​the designated region corresponding to the i-th region scan is greater than the first preset area, the (i+1)-th region scan is performed based on the transmit beam of the transmit antenna array until the power difference between the received power of the first region determined by the (i+j)-th region scan and the received power of the first region determined by the (i+j-1)-th region scan is not greater than the first preset power threshold, and / or the area of ​​the designated region corresponding to the (i+j)-th region scan is not greater than the first preset area, the first region determined by the (i+j)-th region scan is determined as the target region, where j is an integer greater than 0.

[0099] In other words, during the second region scan, n can be... 1max The corresponding area is further divided into n² sub-regions, and directional transmission is performed at the center of each sub-region. The sub-region where the maximum power occurs is recorded and selected, and its number is denoted as n. 2maxAt this point, the second region scan is completed. Repeat the above steps. During the (i+j)th region scan, the sub-region corresponding to the maximum received power found in the (i+j-1)th region scan is divided, and directional transmission is performed at the center of the divided sub-region. The scanning is terminated when the area of ​​the divided sub-region is too small (e.g., less than a certain threshold), or when the difference between the maximum received power determined by two consecutive scans is not significant (e.g., the difference between the maximum received power obtained by two consecutive region scans is less than a given threshold). Thus, the region that maximizes the received power has been found, and power is continuously transmitted into this region.

[0100] Step 137: Based on the first control phase, control the transmitting antenna array to continuously transmit the first microwave to the target area, and receive the second power indication information based on the feedback of the first microwave from the target receiver.

[0101] In some feasible implementations, after determining the target area, the transmitting end can control the transmitting antenna array based on a first control phase to continuously transmit a first microwave towards the target area, and receive second power indication information fed back by the target receiving end based on the first microwave. That is, after determining the target area, the transmitting end can continuously transmit a beam towards the center position of the target area based on the transmitting antenna array to receive the power indication information fed back by the target receiving end, i.e., the second power indication information. This second power indication information indicates the current received power of the target receiving end.

[0102] Step 138: Determine whether the motion state of the target receiver is stationary based on the second power indication information and the first power indication information.

[0103] In some feasible implementations, the motion state of the target receiver can be determined as stationary based on the second power indication information and the first power indication information. Specifically, for each received second power indication information, the absolute value of the power difference between each received second power indication information and the first power indication information can be determined. When the absolute value of the power difference between n consecutive received second power indication information and the first power indication information is not greater than a second preset power threshold, the motion state of the target receiver is determined to be stationary. Alternatively, when the absolute value of the power difference between any received second power indication information and the first power indication information is determined to be greater than the second preset power threshold, the motion state of the target receiver is determined to be moving.

[0104] Step 139: If the motion state of the target receiver is determined to be stationary, then any one of the m antenna elements in the transmitting antenna array is selected as the first antenna element, and the excitation signal input of the other m-1 antenna elements is turned off except for the first antenna element.

[0105] Step 1310: Take each of the other m-1 antenna elements as the antenna element to be optimized in sequence, and determine the first phase interval corresponding to the antenna element to be optimized from the m phase intervals. Control the antenna element to be optimized to transmit the third microwave based on the control phases included in the first phase interval, and receive the third power indication information fed back by the target receiver based on the third microwave of each control phase. Determine the second phase from the first phase interval according to the third power indication information. Determine the second control phase according to the first phase corresponding to the first antenna element in the m first phases and the second phase determined when each of the other m-1 antenna elements is taken as the antenna element to be optimized. Then execute step 1314.

[0106] In some feasible implementations, if the motion state of the target receiver is determined to be stationary, any one of the m antenna elements in the transmitting antenna array is selected as the first antenna element, and the excitation signal input of the other m-1 antenna elements is turned off. Further, each of the other m-1 antenna elements is sequentially selected as the antenna element to be optimized, and the first phase interval corresponding to the antenna element to be optimized is determined from the m phase intervals. Based on the control phases included in the first phase interval, the antenna element to be optimized is controlled to transmit a third microwave, and the third power indication information fed back by the target receiver based on the third microwave of each control phase is received. A second phase is determined from the first phase interval based on the third power indication information, and a second control phase is determined based on the first phase corresponding to the first antenna element among the m first phases, and the second phase determined when each of the other m-1 antenna elements is selected as the antenna element to be optimized. Specifically, when determining the second phase from the first phase interval based on each third power indication information, the target third power indication information can be determined first from each third power indication information. The received power indicated by the target third power indication information is the maximum received power among the received powers indicated by each third power indication information. Then, the control phase corresponding to the target third power indication information is determined as the second phase from the first phase interval.

[0107] Step 1311: If it is determined that the motion state of the target receiver is not stationary (i.e., the motion state of the target receiver is moving), then transmit beams to the target area and the associated area of ​​the target area based on the transmitting antenna array, and receive the fourth power indication information fed back by the target receiver, and determine the target fourth power indication information from the fourth power information.

[0108] Step 1312: Determine whether the power difference between the received power indicated by the first power indication information and the received power indicated by the target fourth power indication information is less than the third preset power threshold. If the power difference between the received power indicated by the first power indication information and the received power indicated by the target fourth power indication information is not less than the third preset power threshold, then the process ends.

[0109] Step 1313: If the power difference between the received power indicated by the first power indication information and the received power indicated by the target fourth power indication information is less than the third preset power threshold, then the control phase corresponding to the target fourth power indication information is determined as the second control phase.

[0110] In some feasible implementations, when the motion state of the target receiver is determined to be a moving state, a beam is transmitted to the target area and the associated area of ​​the target area based on the transmitting antenna array, and the fourth power indication information fed back by the target receiver is received. The target fourth power indication information is determined from the fourth power information. The received power indicated by the target fourth power indication information is the maximum received power among the received powers indicated by the fourth power indication information. When the power difference between the received power indicated by the first power indication information and the received power indicated by the target fourth power indication information is less than a third preset power threshold, the control phase corresponding to the target fourth power indication information is determined as the second control phase. Correspondingly, when the power difference between the received power indicated by the first power indication information and the received power indicated by the target fourth power indication information is greater than or equal to the third preset power threshold, it indicates that the transmitter has failed to track the target receiver, that is, the transmitter cannot perform directional transmission to the target receiver and cannot achieve efficient energy transmission to the target receiver.

[0111] Step 1314: Control the transmitting antenna array to continuously transmit the second microwave based on the second control phase.

[0112] In some feasible implementations, once the second control phase is determined, the transmitting antenna array can be controlled to continuously transmit the second microwave based on the second control phase in order to achieve high-power energy transmission to the target receiving end.

[0113] Understandably, the implementation process of steps 131 to 136 above can be found in the following... Figure 4 The implementation process described in step S601 is not repeated here. Figure 4 The implementation process described in step S602 is not repeated here. Figure 4 The implementation process described in step S603 will not be repeated here.

[0114] The foregoing details the method provided in this application. To facilitate the implementation of the above-described solutions in the embodiments of this application, corresponding apparatus or devices are also provided in the embodiments of this application.

[0115] Please see Figure 14 , Figure 14 This is a schematic diagram of a microwave transmitting device according to an embodiment of this application. The microwave transmitting device 140 may include a region scanning module 1401, a processing module 1402, and a control module 1403. The microwave transmitting device 140 is used to implement the aforementioned microwave transmitting method, for example, it can be used to implement... Figure 4 The microwave transmission method shown.

[0116] It should be noted that the implementation of each unit can also be referenced accordingly. Figure 4 The corresponding description of the method embodiment shown. The microwave transmitting device 140 can be Figure 4 The microwave transmitter or transmitter in the illustrated embodiment may be one or more modules of a microwave transmitter.

[0117] In one possible implementation, the area scanning module 1401 is used to perform area scanning based on the transmitted beam of the transmitting antenna array, and to determine the target area based on the first power indication information fed back by the target receiver. The first power indication information is used to indicate the received power of the target receiver. When scanning the target area based on the transmitted beam, the received power of the target receiver is greater than the received power of the target receiver when scanning other areas besides the target area. The excitation signal control phase of the transmitting antenna array transmitting the beam to the target area is a first control phase.

[0118] The control module 1403 is used to control the transmitting antenna array to continuously transmit a first microwave toward the target area based on the first control phase, and to receive second power indication information fed back by the target receiver based on the first microwave.

[0119] Processing module 1402 is used to determine the motion state of the target receiver based on the second power indication information and the first power indication information, and to determine the second control phase of the transmit beam of the transmit antenna array based on the operating state of the target receiver.

[0120] The control module 1403 is also used to control the transmitting antenna array to continuously transmit a second microwave based on the second control phase.

[0121] In yet another possible implementation, the region scanning module 1401 is specifically used for:

[0122] When performing the i-th region scan based on the transmit antenna array transmits a beam to a designated region, and receives at least two power indication messages fed back by the target receiver, the designated region is at least two sub-regions in the first region determined during the (i-1)-th region scan, and one power indication message is used to indicate the received power of the target receiver when scanning a sub-region, where i is an integer greater than 1;

[0123] Based on the at least two power indication information, the sub-region with the highest received power of the target receiver is determined from the at least two sub-regions, and is used as the first region determined by the i-th region scan;

[0124] When the power difference between the received power of the first region determined by the i-th region scan and the received power of the first region determined by the (i-1)-th region scan is greater than the first preset power threshold, the (i+1)-th region scan is performed based on the transmit beam of the transmit antenna array until the power difference between the received power of the first region determined by the (i+j)-th region scan and the received power of the first region determined by the (i+j-1)-th region scan is not greater than the first preset power threshold. Then, the first region determined by the (i+j)-th region scan is determined as the target region, where j is an integer greater than 0.

[0125] In yet another possible implementation, the region scanning module 1401 is specifically used for:

[0126] When performing the i-th region scan based on the transmit antenna array transmits a beam to a designated region, and receives at least two power indication messages fed back by the target receiver, the designated region is at least two sub-regions in the first region determined during the (i-1)-th region scan, and one power indication message is used to indicate the received power of the target receiver when scanning a sub-region, where i is an integer greater than 1;

[0127] Based on the at least two power indication information, the sub-region with the highest received power of the target receiver is determined from the at least two sub-regions, and is used as the first region determined by the i-th region scan;

[0128] When the power difference between the received power of the first region determined by the i-th region scan and the received power of the first region determined by the (i-1)-th region scan is greater than a first preset power threshold, and the area of ​​the designated region corresponding to the i-th region scan is greater than a first preset area, the (i+1)-th region scan is performed based on the transmit beam of the transmit antenna array until the power difference between the received power of the first region determined by the (i+j)-th region scan and the received power of the first region determined by the (i+j-1)-th region scan is not greater than the first preset power threshold, and / or the area of ​​the designated region corresponding to the (i+j)-th region scan is not greater than the first preset area, the first region determined by the (i+j)-th region scan is determined as the target region, where i is an integer greater than 1 and j is an integer greater than 0.

[0129] In yet another possible implementation, the processing module 1402 is specifically used for:

[0130] Determine the absolute value of the power difference between each received second power indication message and the first power indication message;

[0131] When the absolute value of the power difference between n consecutive second power indication messages and the first power indication message is not greater than the second preset power threshold, the motion state of the target receiving end is determined to be a stationary state.

[0132] In yet another possible implementation, the processing module 1402 is specifically used for:

[0133] Determine the absolute value of the power difference between each received second power indication message and the first power indication message;

[0134] When the absolute value of the power difference between any second power indication information and the first power indication information is greater than the second preset power threshold, the motion state of the target receiver is determined to be a moving state.

[0135] In yet another possible implementation, the processing module 1402 is further configured to:

[0136] When the motion state of the target receiver is determined to be stationary, a first preset phase value is obtained, and a phase scanning interval is determined based on the first control phase and the first preset phase value.

[0137] The second control phase is determined from the phase scanning interval.

[0138] In yet another possible implementation, the processing module 1402 is further configured to:

[0139] The difference between the first control phase and the first preset phase value is determined as the lower limit of the phase, and the sum of the first control phase and the first preset phase value is determined as the upper limit of the phase.

[0140] The phase scanning interval is determined based on the lower phase limit and the upper phase limit.

[0141] In another possible implementation, the transmitting antenna array includes m antenna elements, the phase scanning interval includes m phase intervals, and one antenna element corresponds to one phase interval; the first control phase includes m first phases;

[0142] The processing module 1402 is further configured to:

[0143] From the m antenna elements, any one antenna element is determined as the first antenna element, and the excitation signal input of the other m-1 antenna elements except the first antenna element is turned off based on the control module 1403;

[0144] Each of the other m-1 antenna elements is sequentially taken as the antenna element to be optimized, and the first phase interval corresponding to the antenna element to be optimized is determined from the m phase intervals;

[0145] The control module 1403 is further configured to control the antenna vibrator to be optimized to transmit a third microwave based on each control phase included in the first phase interval, and to receive each third power indication information fed back by the target receiver based on each control phase of the third microwave.

[0146] The processing module 1402 is further configured to determine the second phase from the first phase interval according to the third power indication information, and determine the second control phase according to the first phase corresponding to the first antenna vibrator in the m first phases and the second phase determined when each of the other m-1 antenna vibrators is used as the antenna vibrator to be optimized.

[0147] In yet another possible implementation, the processing module 1402 is further configured to:

[0148] The target third power indication information is determined from each of the third power indication information, and the received power indicated by the target third power indication information is the maximum received power among the received powers indicated by each of the third power indication information.

[0149] From the first phase interval, the control phase corresponding to the target third power indication information is determined as the second phase.

[0150] In another possible implementation, the control module 1403 is further configured to, when determining that the motion state of the target receiver is a moving state, transmit beams to the target area and the associated area of ​​the target area based on the transmitting antenna array, and receive each fourth power indication information fed back by the target receiver;

[0151] The processing module 1402 is further configured to determine the second control phase based on the fourth power indication information.

[0152] In yet another possible implementation, the processing module 1402 is further configured to:

[0153] A target fourth power indication information is determined from each of the fourth power information, wherein the received power indicated by the target fourth power indication information is the maximum received power among the received powers indicated by each of the fourth power indication information.

[0154] When the power difference between the received power indicated by the first power indication information and the received power indicated by the target fourth power indication information is less than a third preset power threshold, the control phase corresponding to the target fourth power indication information is determined as the second control phase.

[0155] It is understood that the division of multiple units or modules in the various device embodiments of this application is only a logical division based on function and is not intended to limit the specific structure of the device. In specific implementations, some functional modules may be subdivided into more smaller functional modules, and some functional modules may be combined into a single functional module. However, regardless of whether these functional modules are subdivided or combined, the general process executed by the device during microwave transmission is the same. Typically, each unit corresponds to its own program code (or program instructions). When the program code corresponding to each unit runs on the processor, it causes the unit to be controlled by the processor to execute the corresponding process and thus achieve the corresponding function.

[0156] See Figure 15 , Figure 15 This is a schematic diagram of the structure of a wireless charging device provided in an embodiment of this application. Figure 15 As shown, the wireless charging device 150 includes a power supply 151, a microwave transmitter 152, and a transmitting antenna array 153. The microwave transmitter 152 includes a processor 15201 (or controller) and a communication interface 15202. The processor 15201 and the communication interface 15202 are coupled via a bus 15204. Understandably, the microwave transmitter 152 is used to convert the DC input of the power supply 151 into microwave power output and transmit the power externally through the transmitting antenna array 153.

[0157] Processor 15201 can be one or more central processing units (CPUs). If processor 15201 is a CPU, the CPU can be a single-core CPU or a multi-core CPU.

[0158] The processor 15201 is used to read the program stored in the memory and, in cooperation with the communication interface 15202, execute some or all of the steps of the method executed by the transmitter in the above embodiments of this application.

[0159] Optionally, the microwave transmitting device 152 of the wireless charging device 150 may also include a power amplifier, a phase shifter (not shown in the figure), etc.

[0160] Optionally, the microwave transmitting device 152 of the wireless charging device 150 further includes a memory 15203. The memory 15203 may include, but is not limited to, random access memory (RAM), erasable programmable read-only memory (EPROM), read-only memory (ROM), or compact disc read-only memory (CD-ROM), etc. The memory 15203 is used to store programs, and the processor 15201 can read the programs stored in the memory 15203 to execute some or all of the steps of the method executed by the transmitting end in the above embodiments of this application.

[0161] In one design, processor 15201 is used for:

[0162] The region is scanned based on the transmitted beam of the transmitting antenna array, and the target region is determined based on the first power indication information fed back by the target receiver. The first power indication information is used to indicate the received power of the target receiver. When scanning the target region based on the transmitted beam, the received power of the target receiver is greater than the received power of the target receiver when scanning other regions besides the target region. The excitation signal control phase of the transmitting antenna array transmitting the beam to the target region is the first control phase.

[0163] Based on the first control phase, the transmitting antenna array is controlled to continuously transmit a first microwave toward the target area, and the second power indication information fed back by the target receiver based on the first microwave is received;

[0164] The motion state of the target receiver is determined based on the second power indication information and the first power indication information. The second control phase of the transmit antenna array transmit beam is determined based on the operating state of the target receiver. The transmit antenna array is then controlled to continuously transmit the second microwave based on the second control phase.

[0165] In some possible implementations, when the processor 15201 performs the i-th region scan based on the transmit antenna array transmits a beam to a designated region based on the transmit antenna array, and receives at least two power indication messages fed back by the target receiver, wherein the designated region is at least two sub-regions in the first region determined during the (i-1)-th region scan, and one power indication message is used to indicate the received power of the target receiver when scanning a sub-region, where i is an integer greater than 1;

[0166] Based on the at least two power indication information, the sub-region with the highest received power of the target receiver is determined from the at least two sub-regions, and is used as the first region determined by the i-th region scan;

[0167] When the power difference between the received power of the first region determined by the i-th region scan and the received power of the first region determined by the (i-1)-th region scan is greater than the first preset power threshold, the (i+1)-th region scan is performed based on the transmit beam of the transmit antenna array until the power difference between the received power of the first region determined by the (i+j)-th region scan and the received power of the first region determined by the (i+j-1)-th region scan is not greater than the first preset power threshold. Then, the first region determined by the (i+j)-th region scan is determined as the target region, where j is an integer greater than 0.

[0168] In some possible implementations, when the processor 15201 performs the i-th region scan based on the transmit antenna array transmits a beam to a designated region based on the transmit antenna array, and receives at least two power indication messages fed back by the target receiver, wherein the designated region is at least two sub-regions in the first region determined during the (i-1)-th region scan, and one power indication message is used to indicate the received power of the target receiver when scanning a sub-region, where i is an integer greater than 1;

[0169] Based on the at least two power indication information, the sub-region with the highest received power of the target receiver is determined from the at least two sub-regions, and is used as the first region determined by the i-th region scan;

[0170] When the power difference between the received power of the first region determined by the i-th region scan and the received power of the first region determined by the (i-1)-th region scan is greater than a first preset power threshold, and the area of ​​the designated region corresponding to the i-th region scan is greater than a first preset area, the (i+1)-th region scan is performed based on the transmit beam of the transmit antenna array until the power difference between the received power of the first region determined by the (i+j)-th region scan and the received power of the first region determined by the (i+j-1)-th region scan is not greater than the first preset power threshold, and / or the area of ​​the designated region corresponding to the (i+j)-th region scan is not greater than the first preset area, the first region determined by the (i+j)-th region scan is determined as the target region, where j is an integer greater than 0.

[0171] In some possible implementations, processor 15201 is used for:

[0172] Determine the absolute value of the power difference between each received second power indication message and the first power indication message;

[0173] When the absolute value of the power difference between n consecutive second power indication messages and the first power indication message is not greater than the second preset power threshold, the motion state of the target receiving end is determined to be a stationary state.

[0174] In some possible implementations, processor 15201 is used for:

[0175] Determine the absolute value of the power difference between each received second power indication message and the first power indication message;

[0176] When the absolute value of the power difference between any second power indication information and the first power indication information is greater than the second preset power threshold, the motion state of the target receiver is determined to be a moving state.

[0177] In some possible implementations, processor 15201 is used for:

[0178] When the motion state of the target receiver is determined to be stationary, a first preset phase value is obtained, and a phase scanning interval is determined based on the first control phase and the first preset phase value.

[0179] The second control phase is determined from the phase scanning interval.

[0180] In some possible implementations, processor 15201 is used for:

[0181] The difference between the first control phase and the first preset phase value is determined as the lower limit of the phase, and the sum of the first control phase and the first preset phase value is determined as the upper limit of the phase.

[0182] The phase scanning interval is determined based on the lower phase limit and the upper phase limit.

[0183] In some possible implementations, the transmitting antenna array includes m antenna elements, the phase scanning interval includes m phase intervals, and one antenna element corresponds to one phase interval; the first control phase includes m first phases;

[0184] The aforementioned processor 15201 is used for:

[0185] From the m antenna elements, any one antenna element is selected as the first antenna element, and the excitation signal input of the other m-1 antenna elements is turned off.

[0186] Each of the other m-1 antenna elements is sequentially taken as the antenna element to be optimized, and the first phase interval corresponding to the antenna element to be optimized is determined from the m phase intervals;

[0187] Based on each control phase included in the first phase interval, the antenna vibrator to be optimized is controlled to transmit a third microwave, and the target receiver receives each third power indication information fed back by the third microwave based on each control phase.

[0188] The second phase is determined from the first phase interval based on the third power indication information, and the second control phase is determined based on the first phase corresponding to the first antenna element in the m first phases and the second phase determined when each of the other m-1 antenna elements is used as the antenna element to be optimized.

[0189] In some possible implementations, processor 15201 is used for:

[0190] The target third power indication information is determined from each of the third power indication information, and the received power indicated by the target third power indication information is the maximum received power among the received powers indicated by each of the third power indication information.

[0191] From the first phase interval, the control phase corresponding to the target third power indication information is determined as the second phase.

[0192] In some possible implementations, processor 15201 is used for:

[0193] When the motion state of the target receiver is determined to be a moving state, a beam is transmitted to the target area and the associated area of ​​the target area based on the transmitting antenna array, and the fourth power indication information fed back by the target receiver is received.

[0194] The second control phase is determined based on each of the fourth power indication information.

[0195] In some possible implementations, processor 15201 is used for:

[0196] A target fourth power indication information is determined from each of the fourth power information, wherein the received power indicated by the target fourth power indication information is the maximum received power among the received powers indicated by each of the fourth power indication information.

[0197] When the power difference between the received power indicated by the first power indication information and the received power indicated by the target fourth power indication information is less than a third preset power threshold, the control phase corresponding to the target fourth power indication information is determined as the second control phase.

[0198] Based on the same inventive concept, the principle and beneficial effects of the wireless charging device provided in the embodiments of this application are similar to the principle and beneficial effects of the microwave transmission method in the embodiments of this application. Please refer to the principle and beneficial effects of the method implementation. Furthermore, the relationship between the various steps performed by each related module can also be referred to the description of the relevant content in the foregoing embodiments. For the sake of brevity, it will not be repeated here.

[0199] This application also provides a microwave transmitting device, which may be a single chip or multiple chips working in concert. The microwave transmitting device includes an input device coupled to the microwave transmitting device (e.g., a chip) for executing the embodiments of this application. Figure 4 The technical solution provided herein. It should be understood that "coupling" here refers to the direct or indirect connection between two components. This connection can be fixed or movable, and it can allow the communication of fluid, electricity, electrical signals, or other types of signals between the two components.

[0200] This application also provides a computer storage medium that can be used to store... Figure 4 The computer software instructions used by the microwave transmitting device in the illustrated embodiment include programs designed for executing the microwave transmitting device described above. The storage medium includes, but is not limited to, flash memory, hard disk, and solid-state drive.

[0201] This application also provides a computer program product that, when run by a microwave transmitting device, can execute the above-mentioned... Figure 15 The embodiment shown illustrates a microwave transmission method designed for a microwave transmitting device.

[0202] Understandably, the steps in the method embodiments of this application may be adjusted, combined, or deleted in order according to actual needs.

[0203] The modules in the device embodiments of this application can be merged, divided, and deleted according to actual needs.

[0204] Those skilled in the art will understand that, in the various embodiments of this application, the sequence number of each process does not imply the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of this application.

[0205] Based on the same inventive concept, the principle and beneficial effects of the microwave transmitting device provided in the embodiments of this application are similar to the principle and beneficial effects of the microwave transmitting method in the embodiments of this application. Please refer to the principle and beneficial effects of the method implementation. Furthermore, the relationship between the various steps performed by each related module can also be referred to the description of the relevant content in the foregoing embodiments. For the sake of brevity, it will not be repeated here.

Claims

1. A microwave transmission method, characterized in that, The method includes: The region is scanned based on the transmitted beam of the transmitting antenna array, and the target region is determined based on the first power indication information fed back by the target receiver. The first power indication information is used to indicate the received power of the target receiver. When scanning the target region based on the transmitted beam, the received power of the target receiver is greater than the received power of the target receiver when scanning other regions besides the target region. The excitation signal control phase of the transmitting antenna array transmitting the beam to the target region is the first control phase. Based on the first control phase, the transmitting antenna array is controlled to continuously transmit a first microwave toward the target area, and the second power indication information fed back by the target receiver based on the first microwave is received; Based on the power difference between the multiple second power indication messages and the first power indication message received continuously, the motion state of the target receiver is determined, the second control phase of the transmitting antenna array's transmitting beam is determined based on the operating state of the target receiver, and the transmitting antenna array is controlled to continuously transmit the second microwave based on the second control phase.

2. The method according to claim 1, characterized in that, The process of scanning a region based on the transmitted beam of the transmitting antenna array and determining the target region based on the first power indication information fed back by the target receiver includes: When performing the i-th region scan based on the transmit antenna array transmits a beam to a designated region, and receives at least two power indication messages fed back by the target receiver, the designated region is at least two sub-regions in the first region determined during the (i-1)-th region scan, and one power indication message is used to indicate the received power of the target receiver when scanning a sub-region, where i is an integer greater than 1; Based on the at least two power indication information, the sub-region with the highest received power of the target receiver is determined from the at least two sub-regions, and is used as the first region determined by the i-th region scan; When the power difference between the received power of the first region determined by the i-th region scan and the received power of the first region determined by the (i-1)-th region scan is greater than the first preset power threshold, the (i+1)-th region scan is performed based on the transmit beam of the transmit antenna array until the power difference between the received power of the first region determined by the (i+j)-th region scan and the received power of the first region determined by the (i+j-1)-th region scan is not greater than the first preset power threshold. Then, the first region determined by the (i+j)-th region scan is determined as the target region, where j is an integer greater than 0.

3. The method according to claim 1, characterized in that, The process of scanning a region based on the transmitted beam of the transmitting antenna array and determining the target region based on the first power indication information fed back by the target receiver includes: When performing the i-th region scan based on the transmit antenna array transmits a beam to a designated region, and receives at least two power indication messages fed back by the target receiver, the designated region is at least two sub-regions in the first region determined during the (i-1)-th region scan, and one power indication message is used to indicate the received power of the target receiver when scanning a sub-region, where i is an integer greater than 1; Based on the at least two power indication information, the sub-region with the highest received power of the target receiver is determined from the at least two sub-regions, and is used as the first region determined by the i-th region scan; When the power difference between the received power of the first region determined by the i-th region scan and the received power of the first region determined by the (i-1)-th region scan is greater than a first preset power threshold, and the area of ​​the designated region corresponding to the i-th region scan is greater than a first preset area, the (i+1)-th region scan is performed based on the transmit beam of the transmit antenna array until the power difference between the received power of the first region determined by the (i+j)-th region scan and the received power of the first region determined by the (i+j-1)-th region scan is not greater than the first preset power threshold, and / or the area of ​​the designated region corresponding to the (i+j)-th region scan is not greater than the first preset area, the first region determined by the (i+j)-th region scan is determined as the target region, where j is an integer greater than 0.

4. The method according to any one of claims 1-3, characterized in that, Determining the motion state of the target receiver based on the power difference between multiple consecutively received second power indication messages and the first power indication message includes: Determine the absolute value of the power difference between each received second power indication message and the first power indication message; When the absolute value of the power difference between n consecutive second power indication messages and the first power indication message is not greater than the second preset power threshold, the motion state of the target receiving end is determined to be a stationary state.

5. The method according to any one of claims 1-3, characterized in that, Determining the motion state of the target receiver based on the power difference between multiple consecutively received second power indication messages and the first power indication message includes: Determine the absolute value of the power difference between each received second power indication message and the first power indication message; When the absolute value of the power difference between any second power indication information and the first power indication information is greater than the second preset power threshold, the motion state of the target receiver is determined to be a moving state.

6. The method according to claim 4, characterized in that, Determining the second control phase of the transmit beam of the transmit antenna array based on the operating state of the target receiver includes: When the motion state of the target receiver is determined to be stationary, a first preset phase value is obtained, and a phase scanning interval is determined based on the first control phase and the first preset phase value. The second control phase is determined from the phase scanning interval.

7. The method according to claim 6, characterized in that, The step of determining the phase scanning interval based on the first control phase and the first preset phase value includes: The difference between the first control phase and the first preset phase value is determined as the lower limit of the phase, and the sum of the first control phase and the first preset phase value is determined as the upper limit of the phase. The phase scanning interval is determined based on the lower phase limit and the upper phase limit.

8. The method according to claim 7, characterized in that, The transmitting antenna array includes m antenna elements, and the phase scanning interval includes m phase intervals, with one antenna element corresponding to one phase interval; The first control phase includes m first phases; Before determining the second control phase from the phase scan interval, the method further includes: From the m antenna elements, any one antenna element is selected as the first antenna element, and the excitation signal input of the other m-1 antenna elements is turned off. Determining the second control phase from the phase scanning interval includes: Each of the other m-1 antenna elements is sequentially taken as the antenna element to be optimized, and the first phase interval corresponding to the antenna element to be optimized is determined from the m phase intervals; Based on each control phase included in the first phase interval, the antenna vibrator to be optimized is controlled to transmit a third microwave, and the target receiver receives each third power indication information fed back by the third microwave based on each control phase. The second phase is determined from the first phase interval based on the third power indication information, and the second control phase is determined based on the first phase corresponding to the first antenna element in the m first phases and the second phase determined when each of the other m-1 antenna elements is used as the antenna element to be optimized.

9. The method according to claim 8, characterized in that, Determining the second phase from the first phase interval based on the third power indication information includes: The target third power indication information is determined from each of the third power indication information, and the received power indicated by the target third power indication information is the maximum received power among the received powers indicated by each of the third power indication information. From the first phase interval, the control phase corresponding to the target third power indication information is determined as the second phase.

10. The method according to claim 5, characterized in that, Determining the second control phase of the transmit beam of the transmit antenna array based on the operating state of the target receiver includes: When the motion state of the target receiver is determined to be a moving state, a beam is transmitted to the target area and the associated area of ​​the target area based on the transmitting antenna array, and the fourth power indication information fed back by the target receiver is received. The second control phase is determined based on each of the fourth power indication information.

11. The method according to claim 10, characterized in that, Determining the second control phase based on each of the fourth power indication information includes: A target fourth power indication information is determined from each of the fourth power indication information, wherein the received power indicated by the target fourth power indication information is the maximum received power among the received powers indicated by each of the fourth power indication information. When the power difference between the received power indicated by the first power indication information and the received power indicated by the target fourth power indication information is less than a third preset power threshold, the control phase corresponding to the target fourth power indication information is determined as the second control phase.

12. A microwave transmitting device, characterized in that, The device includes: The area scanning module is used to perform area scanning based on the transmitted beam of the transmitting antenna array, and to determine the target area based on the first power indication information fed back by the target receiver. The first power indication information is used to indicate the received power of the target receiver. When scanning the target area based on the transmitted beam, the received power of the target receiver is greater than the received power of the target receiver when scanning other areas besides the target area. The excitation signal control phase of the transmitting antenna array transmitting the beam to the target area is a first control phase. The control module is used to control the transmitting antenna array to continuously transmit a first microwave toward the target area based on the first control phase, and to receive second power indication information fed back by the target receiver based on the first microwave. The processing module is configured to determine the motion state of the target receiver based on the power difference between multiple consecutively received second power indication information and the first power indication information, and to determine the second control phase of the transmit beam of the transmit antenna array based on the operating state of the target receiver. The control module is also used to control the transmitting antenna array to continuously transmit a second microwave based on the second control phase.

13. The apparatus according to claim 12, characterized in that, The region scanning module is specifically used for: When performing the i-th region scan based on the transmit antenna array transmits a beam to a designated region, and receives at least two power indication messages fed back by the target receiver, the designated region is at least two sub-regions in the first region determined during the (i-1)-th region scan, and one power indication message is used to indicate the received power of the target receiver when scanning a sub-region, where i is an integer greater than 1; Based on the at least two power indication information, the sub-region with the highest received power of the target receiver is determined from the at least two sub-regions, and is used as the first region determined by the i-th region scan; When the power difference between the received power of the first region determined by the i-th region scan and the received power of the first region determined by the (i-1)-th region scan is greater than the first preset power threshold, the (i+1)-th region scan is performed based on the transmit beam of the transmit antenna array until the power difference between the received power of the first region determined by the (i+j)-th region scan and the received power of the first region determined by the (i+j-1)-th region scan is not greater than the first preset power threshold. Then, the first region determined by the (i+j)-th region scan is determined as the target region, where j is an integer greater than 0.

14. The apparatus according to claim 12, characterized in that, The region scanning module is specifically used for: When performing the i-th region scan based on the transmit antenna array transmits a beam to a designated region, and receives at least two power indication messages fed back by the target receiver, the designated region is at least two sub-regions in the first region determined during the (i-1)-th region scan, and one power indication message is used to indicate the received power of the target receiver when scanning a sub-region, where i is an integer greater than 1; Based on the at least two power indication information, the sub-region with the highest received power of the target receiver is determined from the at least two sub-regions, and is used as the first region determined by the i-th region scan; When the power difference between the received power of the first region determined by the i-th region scan and the received power of the first region determined by the (i-1)-th region scan is greater than a first preset power threshold, and the area of ​​the designated region corresponding to the i-th region scan is greater than a first preset area, the (i+1)-th region scan is performed based on the transmit beam of the transmit antenna array until the power difference between the received power of the first region determined by the (i+j)-th region scan and the received power of the first region determined by the (i+j-1)-th region scan is not greater than the first preset power threshold, and / or the area of ​​the designated region corresponding to the (i+j)-th region scan is not greater than the first preset area, the first region determined by the (i+j)-th region scan is determined as the target region, where i is an integer greater than 1 and j is an integer greater than 0.

15. The apparatus according to any one of claims 12-14, characterized in that, The processing module is specifically used for: Determine the absolute value of the power difference between each received second power indication message and the first power indication message; When the absolute value of the power difference between n consecutive second power indication messages and the first power indication message is not greater than the second preset power threshold, the motion state of the target receiving end is determined to be a stationary state.

16. The apparatus according to any one of claims 12-14, characterized in that, The processing module is specifically used for: Determine the absolute value of the power difference between each received second power indication message and the first power indication message; When the absolute value of the power difference between any second power indication information and the first power indication information is greater than the second preset power threshold, the motion state of the target receiver is determined to be a moving state.

17. The apparatus according to claim 15, characterized in that, The processing module is further specifically used for: When the motion state of the target receiver is determined to be stationary, a first preset phase value is obtained, and a phase scanning interval is determined based on the first control phase and the first preset phase value. The second control phase is determined from the phase scanning interval.

18. The apparatus according to claim 17, characterized in that, The processing module is further specifically used for: The difference between the first control phase and the first preset phase value is determined as the lower limit of the phase, and the sum of the first control phase and the first preset phase value is determined as the upper limit of the phase. The phase scanning interval is determined based on the lower phase limit and the upper phase limit.

19. The apparatus according to claim 18, characterized in that, The transmitting antenna array includes m antenna elements, the phase scanning interval includes m phase intervals, and one antenna element corresponds to one phase interval; the first control phase includes m first phases; The processing module is further specifically used for: From the m antenna elements, any one antenna element is determined as the first antenna element, and the excitation signal input of the other m-1 antenna elements other than the first antenna element is turned off based on the control module; Each of the other m-1 antenna elements is sequentially taken as the antenna element to be optimized, and the first phase interval corresponding to the antenna element to be optimized is determined from the m phase intervals; The control module is further configured to control the antenna vibrator to be optimized to transmit a third microwave based on each control phase included in the first phase interval, and to receive each third power indication information fed back by the target receiver based on each control phase of the third microwave. The processing module is further configured to determine the second phase from the first phase interval according to the third power indication information, and determine the second control phase according to the first phase corresponding to the first antenna vibrator in the m first phases and the second phase determined when each of the other m-1 antenna vibrators is used as the antenna vibrator to be optimized.

20. The apparatus according to claim 19, characterized in that, The processing module is further specifically used for: The target third power indication information is determined from each of the third power indication information, and the received power indicated by the target third power indication information is the maximum received power among the received powers indicated by each of the third power indication information. From the first phase interval, the control phase corresponding to the target third power indication information is determined as the second phase.

21. The apparatus according to claim 16, characterized in that, The control module is further configured to, when determining that the motion state of the target receiver is a moving state, transmit beams to the target area and the associated area of ​​the target area based on the transmitting antenna array, and receive each fourth power indication information fed back by the target receiver; The processing module is further configured to determine the second control phase based on the fourth power indication information.

22. The apparatus according to claim 21, characterized in that, The processing module is further specifically used for: A target fourth power indication information is determined from each of the fourth power indication information, wherein the received power indicated by the target fourth power indication information is the maximum received power among the received powers indicated by each of the fourth power indication information. When the power difference between the received power indicated by the first power indication information and the received power indicated by the target fourth power indication information is less than a third preset power threshold, the control phase corresponding to the target fourth power indication information is determined as the second control phase.

23. A wireless charging device, characterized in that, The wireless charging device includes a microwave transmitting device and a transmitting antenna array, wherein the microwave transmitting device is used to read and execute instructions in a memory to implement the microwave transmitting method as described in any one of claims 1-11.

24. A computer program product containing instructions, characterized in that, When the computer program product is run on the wireless charging device, it causes the wireless charging device to perform the microwave transmission method as described in any one of claims 1-11.

25. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores program instructions that, when executed, cause the microwave transmission method as described in any one of claims 1-11 to be performed.

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