A mobile omnidirectional wide coverage microwave wireless energy receiving system and method

Abstract

The present invention discloses a mobile omnidirectional wide coverage microwave wireless energy receiving system, characterized in that the receiving system comprises a receiving antenna array (1), a two-dimensional turntable subsystem (2), a signal processing subsystem (3), a wireless data transmission module (4) and a mobile universal wheel (5), wherein the signal processing subsystem (3) and the wireless data transmission module (4) are installed on the back of the receiving antenna array (1), the mobile universal wheel (5) is installed on the bottom of the two-dimensional turntable subsystem (2), the receiving antenna array (1) is movably connected and communicatively connected with the two-dimensional turntable subsystem (2), and the signal processing subsystem (3) is communicatively connected with the two-dimensional turntable subsystem (2) and the wireless data transmission module (4) respectively. The present invention solves the problems that the antenna array direction of the traditional wireless energy receiving system is difficult to freely adjust, the energy receiving system cannot be conveniently moved, and the operating frequency of the energy receiving system is narrow.

Description

Technical Field

[0001] The invention belongs to the field of microwave transmission, and in particular relates to a mobile omnidirectional wide-coverage microwave wireless energy receiving system and method. Background Art

[0002] The earliest proposal of wireless power transmission can be traced back to Nikola Tesla in 1889. In 1901, he took the lead in conducting related experiments such as "Trans-Pacific Radio Broadcasting and Power Transmission". Long-distance, high-power, and efficient wireless energy transmission has been listed by the China Association for Science and Technology as one of the ten science and technologies that will lead the future. It is an important means of energy supply in various special scenarios and will lead the development of energy and interdisciplinary disciplines. Under the requirements of long distance and high power, the huge potential of microwave wireless energy transmission is constantly being explored. The application of microwave wireless transmission technology is increasingly accepted by all walks of life and widely used in various fields. The microwave wireless transmission system consists of a microwave transmitting subsystem and a microwave receiving subsystem. The wireless transmission of energy requires the close cooperation of the two. The application of traditional wireless power transmission is hindered in some special areas (such as isolated islands, remote mountainous areas, disaster areas, high altitudes, etc.), while microwave long-distance wireless energy transmission can break through the limitations of geographical conditions, provide rapid emergency power supply, ensure the uninterrupted operation of some key loads, and achieve the role of saving lives and stabilizing the situation. However, under emergency conditions, it is necessary to quickly build a microwave wireless power supply system to supply energy to a specific area. Often in a long-distance wireless power supply system, in order to improve the efficiency of the wireless power supply, the microwave energy transmitter and the receiver need to be aligned, which greatly increases the difficulty of building a microwave wireless power supply system.

[0003] At present, the microwave wireless energy receiving subsystems of the microwave wireless energy supply system are all composed of fixed bracket arrays. Once such wireless energy receiving subsystems are processed, the direction of the receiving array can only be adjusted manually, and the direction adjustment is difficult; for larger wireless energy receiving subsystems, the position cannot be moved; at the same time, most of the current energy receiving systems operate in a very narrow operating frequency band, which greatly limits the versatility of the microwave energy receiving system. Summary of the invention

[0004] In view of the above-mentioned deficiencies in the prior art, the present invention provides a mobile omnidirectional wide-coverage microwave wireless energy receiving system and method, which solves the problems that the direction of the antenna array of the traditional wireless energy receiving system is difficult to adjust freely, the energy receiving system cannot be moved conveniently, and the operating frequency of the energy receiving system is narrow.

[0005] In order to achieve the above-mentioned purpose of the invention, the technical solution adopted by the present invention is: a mobile omnidirectional wide-coverage microwave wireless energy receiving system, characterized in that the receiving system includes a receiving antenna array, a two-dimensional turntable subsystem, a signal processing subsystem, a wireless data transmission module and a mobile universal wheel, the signal processing subsystem and the wireless data transmission module are installed on the back of the receiving antenna array, the mobile universal wheel is installed on the bottom of the two-dimensional turntable subsystem, the receiving antenna array is movably connected and communicatively connected to the two-dimensional turntable subsystem, and the signal processing subsystem is communicatively connected to the two-dimensional turntable subsystem and the wireless data transmission module respectively.

[0006] The beneficial effect of the above scheme is that through the above technical scheme, a microwave wireless energy receiving system is realized which can move freely, the receiving antenna array can be freely adjusted omnidirectionally and has a wide operating frequency coverage.

[0007] Furthermore, the two-dimensional turntable subsystem includes a servo controller, a servo driver, a pitch encoder, a pitch motor, an azimuth encoder and an azimuth motor. The servo controller and the driver are respectively connected to the signal processing system, the pitch encoder, the pitch motor, the azimuth encoder and the azimuth motor. The pitch motor is also connected to the pitch encoder and the receiving antenna array, and the azimuth motor is also connected to the azimuth encoder and the receiving antenna array.

[0008] The beneficial effect of the above further scheme is: the two-dimensional turntable controls the pitch angle and azimuth of the antenna array through the pitch motor and azimuth motor, realizes omnidirectional adjustment of the direction of the receiving antenna array, and allows the receiving antenna to be more conveniently aligned with the transmitting antenna.

[0009] Furthermore, the receiving antenna array adopts a ridge horn type antenna, and the antenna frame is welded by profiles to form a rack structure.

[0010] The beneficial effect of the above further scheme is: in designing the receiving antenna array, the focus is on the wide coverage of the operating frequency, while considering the high efficiency of the antenna itself, the present invention adopts a ridge horn type antenna, and the antenna frame is welded by profiles to form a rack structure with high strength and not easy to deform.

[0011] Furthermore, the two-dimensional turntable subsystem adopts an AE double-frame structure to adjust the azimuth and elevation rotation of the receiving antenna array.

[0012] The beneficial effect of the above further scheme is that the system adopts the AE double-frame structure to achieve 360° continuous rotation in the azimuth range and a pitch rotation range of 0-90°, thereby achieving omnidirectional adjustment of the direction of the receiving array antenna.

[0013] Furthermore, the two-dimensional turntable subsystem also includes a portable hand-operated lever, an array support rod, a base support surface, a turntable and a turntable connection, wherein the turntable connection is fixed to the outer wall of the turntable, the portable hand-operated lever is movably connected to the top of the turntable, the array support rod is fixedly connected between the receiving antenna array and the portable hand-operated lever, and the base support surface is installed at the bottom of the turntable.

[0014] The beneficial effects of the above further scheme are: the two-dimensional turntable is assembled from two sections, and the turntable connection is used to connect the two sections of the turntable; the convenient hand-operated lever is used to manually operate the orientation of the antenna array to achieve manual adjustment; the array support rod uses a triangular support to support the array more stably; the bottom support surface is connected to the two-dimensional turntable at the top and to four universal wheels at the bottom to achieve better force bearing.

[0015] Furthermore, the wireless data transmission module adopts a self-organizing network wireless transmission module with integrated transceiver and adopts an ISM band operating frequency.

[0016] The beneficial effect of the above further scheme is: the wireless data transmission module mainly realizes the data protocol forwarding function between the energy receiving system and the remote site, allowing the energy receiving system to establish a response relationship with the remote site, so that the orientation information of the receiving array antenna is transmitted to the remote site in real time, making it easier to align the transmitting end and the receiving antenna.

[0017] Furthermore, the signal processing subsystem adopts an FPGA processor.

[0018] The beneficial effects of the above further scheme are: the signal processing subsystem collects the orientation and angle of the array through sensors, and performs command parsing and forwarding functions for remote and local control. The FPGA processor sends the received instructions to the two-dimensional turntable subsystem through the RS422 interface connected to the two-dimensional turntable subsystem, thereby realizing the command forwarding function.

[0019] In addition, the present invention also adopts a technical solution: a mobile omnidirectional wide coverage microwave wireless energy receiving method, characterized in that the receiving method comprises the following steps:

[0020] S1: Receives the signal from the transmitter through the wireless data transmission module, and forwards the antenna array position and array orientation information to the signal processing subsystem;

[0021] S2: The signal processing subsystem collects the antenna array position and array orientation information, analyzes the information and forwards it to the two-dimensional turntable subsystem;

[0022] S3: Receive and encode information through the two-dimensional turntable subsystem, and drive the motor to control the pitch and azimuth rotation of the receiving antenna array.

[0023] The beneficial effect of the above scheme is: through the above technical scheme, the microwave wireless energy receiving system can receive the remote transmission point information. During the entire receiving process, the system receiving antenna array can achieve all-round rotation, the entire receiving system can be easily moved and the receiving system works in a wide frequency band. It can be used normally under different specifications of transmission, which improves the adaptability and versatility of the system.

[0024] Furthermore, the wireless data transmission module in S1 adopts a half-duplex communication mode.

[0025] The beneficial effect of the above further scheme is: half-duplex communication realizes two-way transmission of information, so that the energy receiving system and the remote site can forward and respond to the data protocol, the wireless data transmission module transmits the received information to the receiving antenna array, and the orientation information of the receiving antenna array is also transmitted to the remote site in real time. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a structural diagram of a mobile omnidirectional wide-coverage microwave wireless energy receiving system.

[0027] Figure 2 It is the voltage standing wave ratio curve of the antenna unit when the operating frequency is 2.4-4GHz.

[0028] Figure 3 It is the voltage standing wave ratio curve of the antenna unit when the operating frequency is 4-6GHz.

[0029] Figure 4 It is the voltage standing wave ratio curve of the antenna unit when the operating frequency is 6-11GHz.

[0030] Figure 5 The present invention is a flow chart of a mobile omnidirectional wide coverage microwave wireless energy receiving method.

[0031] Figure 6 This is the overall design block diagram of the mobile omnidirectional wide coverage microwave wireless energy receiving system.

[0032] Among them: 1. Receiving antenna array; 2. Two-dimensional turntable subsystem; 3. Signal processing subsystem; 4. Wireless data transmission module; 5. Mobile universal wheel; 6. Turntable connection; 7. Portable hand joystick; 8. Array support rod; 9. Base support surface; 10. Turntable. DETAILED DESCRIPTION

[0033] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0034] Embodiment 1, as Figure 1As shown, a mobile omnidirectional wide-coverage microwave wireless energy receiving system includes a receiving antenna array 1, a two-dimensional turntable subsystem 2, a signal processing subsystem 3, a wireless data transmission module 4 and a mobile universal wheel 5. The signal processing subsystem 3 and the wireless data transmission module 4 are installed on the back of the receiving antenna array 1, and the mobile universal wheel 5 is installed on the bottom of the two-dimensional turntable subsystem 2. The receiving antenna array 1 is movably connected and communicatively connected with the two-dimensional turntable subsystem 2, and the signal processing subsystem 3 is communicatively connected with the two-dimensional turntable subsystem 2 and the wireless data transmission module 4 respectively.

[0035] The two-dimensional turntable subsystem 2 includes a servo controller, a servo driver, an elevation encoder, an elevation motor, an azimuth encoder and an azimuth motor. The servo controller and the driver are respectively connected to the signal processing system 3, the elevation encoder, the elevation motor, the azimuth encoder and the azimuth motor. The elevation motor is also connected to the elevation encoder and the receiving antenna array 1. The azimuth motor is also connected to the azimuth encoder and the receiving antenna array 1. The two-dimensional turntable subsystem 2 adopts an AE double-frame structure to adjust the azimuth and elevation rotation of the receiving antenna array 1. The azimuth rotation range is 360° Continuous rotation, the pitch rotation range is 0-90°, and the omnidirectional adjustment of the direction of the receiving antenna array 1 is realized. The antenna unit adopts a splicing installation method, the pitch adopts a U-shaped structure, and the antenna deflection torque is balanced by a counterweight block to reduce the influence of the deflection torque on the antenna stability when the antenna rotates. The azimuth adopts an azimuth turntable to effectively prevent the damage to the other party's mechanism caused by the flipping of the antenna surface. The internal azimuth rotation drive motor module adopts a servo motor to accurately control the rotation angle. The internal gear slewing bearing is selected from the same excavator slewing bearing, and the quality is stable and reliable. The two-dimensional turntable subsystem 2 also includes a portable hand lever 7, an array support rod 8, a base support surface 9, a turntable 10 and a turntable connection 6. The turntable connection 6 is fixed to the outer wall of the turntable 10. The portable hand lever 7 is movably connected to the top of the turntable 10. The array support rod 8 is fixedly connected between the receiving antenna array 1 and the portable hand lever 7. The base support surface 9 is installed at the bottom of the turntable 10.

[0036] The receiving antenna array 1 adopts a ridge horn antenna, and the antenna frame is welded from profiles to form a rack structure. The present invention adopts a ridge horn antenna, with a single antenna caliber of 50mm*110mm, a length of 110mm, and an SNA-K connector. In this embodiment, the antenna units are arranged in a 100*100 array, and the entire antenna array surface can be divided into a 10*10 antenna array. The antenna small array is composed of 10*10 antenna units, and each small array is fixed on the antenna frame for easy installation and disassembly. The antenna unit of the present invention can achieve ultra-wide operating frequency coverage of 2.4~11GHz. The test results of the antenna are as follows Figure 2 , Figure 3 and Figure 4As shown, at the operating frequency of 2.4 to 11 GHz, the voltage standing wave ratio is less than 2, demonstrating the excellent energy transmission performance of the antenna at 2.4 to 11 GHz.

[0037] The wireless data transmission module 4 adopts a self-organizing wireless transmission module with integrated transceiver. The module adopts a JZX894 wireless transmission module and an ISM band operating frequency. In this embodiment, 8 communication channels are set, the transmission power is 2W (33dB), and the high receiving sensitivity is -122dbm. In order to ensure the reliability and stability of the user system, a checksum or CRC check error detection mode is added during transmission to retransmit the erroneous data. The module transceiver buffer is up to 512 bytes, which means that the user can transmit 512 bytes of data once in any state. When the air speed is set to be greater than the serial port rate, it is theoretically possible to send an unlimited length of data packets, but it is not recommended that users send too long data packets. It is recommended that the length of each data packet be between 60-100B, generally not longer than 120B, and the maximum transmission distance is 2-5km.

[0038] The signal processing subsystem 3 uses an FPGA processor. As the core control unit of this system, the signal processing subsystem 3 not only needs to collect the ADC of the array azimuth and angle through the sensor, but also needs to serve as a central control unit to perform command parsing and forwarding functions for remote and local control. The communication process of the signal processing subsystem 3 is as follows: When the remote site (transmitter) needs to request data from the signal processing subsystem 3, it will send a frame of data query instructions. After the instruction is received by the wireless data transmission module 4, it will be converted into the RS422 serial communication protocol and transmitted to the signal processing subsystem 3. The signal processing subsystem 3 is converted to the UART serial protocol and transmitted to the FPGA for command parsing. After the FPGA processor determines the instruction frame format, it determines that the instruction is an instruction for querying data. The FPGA frames and packages the collected and processed AD data and transmits it back along the original route. The return function of the data link is realized. When the remote monitoring (transmitting) end needs to control the two-dimensional turntable subsystem 2, it will send a frame of control instructions. After the instruction is received by the wireless data transmission module 4, it is converted into the RS422 serial communication protocol and transmitted to the signal processing subsystem 3. The signal processing subsystem 3 is converted into a UART serial protocol and transmitted to the FPGA for command parsing. After the FPGA processor determines the instruction frame format, it determines that the instruction is a control instruction of the two-dimensional turntable subsystem 2. The FPGA processor sends the instruction to the two-dimensional turntable subsystem 2 through the RS422 interface connected to the two-dimensional turntable subsystem 2, realizing the command forwarding function.

[0039] Embodiment 2, as Figure 5 As shown, a mobile omnidirectional wide coverage microwave wireless energy receiving method comprises the following steps:

[0040] S1: Receives the signal from the transmitter through the wireless data transmission module, and forwards the antenna array position and array orientation information to the signal processing subsystem;

[0041] S2: The signal processing subsystem collects the antenna array position and array orientation information, analyzes the information and forwards it to the two-dimensional turntable subsystem;

[0042] S3: Receive and encode information through the two-dimensional turntable subsystem, and drive the motor to control the pitch and azimuth rotation of the receiving antenna array.

[0043] The wireless data transmission module in S1 adopts half-duplex communication mode.

[0044] In one embodiment of the present invention, Figure 6 As shown, the wireless data transmission module transmits the received signal from the transmitter to the information processing subsystem. The information processing subsystem collects and encodes the information. The processed signal is transmitted to the servo controller and driver in the two-dimensional turntable subsystem, which then drives the motor to perform corresponding pitch and azimuth rotations, thereby controlling the receiving antenna array to achieve omnidirectional rotation. At the same time, the orientation information of the receiving array antenna will be transmitted to the remote site in real time via the wireless data transmission module, making it easier to align the transmitter and the receiving antenna.

[0045] In the mobile omnidirectional wide-coverage microwave wireless energy receiving system and method proposed by the present invention, the microwave wireless energy receiving system adopts a ridge horn antenna, and the antenna unit can achieve ultra-wide operating frequency coverage of 2.4 to 11 GHz. The antenna has excellent energy transmission performance at 2.4 to 11 GHz, which improves the versatility of the microwave wireless energy receiving system; the microwave wireless energy receiving system adopts a two-dimensional turntable subsystem, and the antenna array is connected through the two-dimensional turntable. The two-dimensional turntable can realize the omnidirectional free adjustment of the antenna array, so that the microwave wireless energy receiving system can be better used in conjunction with the microwave transmitting device; the microwave wireless energy receiving system is equipped with mobile universal wheels at the bottom, which greatly improves the mobility of the microwave wireless energy receiving system and makes the position adjustment of the microwave wireless energy receiving system more flexible; the integration and modularization effects of the microwave wireless energy receiving system are greatly improved, and the various parts of a system are tightly nested and connected together, which is conducive to the actual engineering use of the system.

[0046] Those skilled in the art will appreciate that the embodiments described herein are intended to help readers understand the principles of the present invention, and should be understood that the protection scope of the present invention is not limited to such specific statements and embodiments. Those skilled in the art can make various other specific variations and combinations that do not deviate from the essence of the present invention based on the technical revelations disclosed by the present invention, and these variations and combinations are still within the protection scope of the invention.

Claims

1. A mobile omnidirectional wide coverage microwave wireless energy receiving system, characterized in that: The receiving system comprises a receiving antenna array (1), a two-dimensional turntable subsystem (2), a signal processing subsystem (3), a wireless data transmission module (4) and a movable universal wheel (5); the signal processing subsystem (3) and the wireless data transmission module (4) are installed on the back of the receiving antenna array (1); the movable universal wheel (5) is installed on the bottom of the two-dimensional turntable subsystem (2); the receiving antenna array (1) is movably connected and communicatively connected with the two-dimensional turntable subsystem (2); the signal processing subsystem (3) is communicatively connected with the two-dimensional turntable subsystem (2) and the wireless data transmission module (4) respectively; The two-dimensional turntable subsystem (2) includes a servo controller, a servo driver, an elevation encoder, an elevation motor, an azimuth encoder and an azimuth motor. The servo controller and the driver are respectively connected to the signal processing subsystem (3), the elevation encoder, the elevation motor, the azimuth encoder and the azimuth motor. The elevation motor is also connected to the elevation encoder and the receiving antenna array (1). The azimuth motor is also connected to the azimuth encoder and the receiving antenna array (1). The two-dimensional turntable subsystem (2) adopts an AE double-frame structure to adjust the azimuth and elevation rotation of the receiving antenna array (1).

2. The mobile omnidirectional wide coverage microwave wireless energy receiving system according to claim 1, characterized in that: The receiving antenna array (1) adopts a ridge horn antenna, and the antenna frame is welded by profiles to form a rack structure.

3. The mobile omnidirectional wide coverage microwave wireless energy receiving system according to claim 1, characterized in that: The two-dimensional turntable subsystem (2) also includes a portable hand-operated lever (7), an array support rod (8), a base support surface (9), a turntable (10) and a turntable connection (6), wherein the turntable connection (6) is fixed to the outer wall of the turntable (10), the portable hand-operated lever (7) is movably connected to the top of the turntable (10), the array support rod (8) is fixedly connected between the receiving antenna array (1) and the portable hand-operated lever (7), and the base support surface (9) is installed at the bottom of the turntable (10).

4. The mobile omnidirectional wide coverage microwave wireless energy receiving system according to claim 1, characterized in that: The wireless data transmission module (4) adopts a self-organizing network wireless transmission module with integrated transmission and reception, and adopts an ISM frequency band operating frequency.

5. The mobile omnidirectional wide coverage microwave wireless energy receiving system according to claim 1, characterized in that: The signal processing subsystem (3) adopts an FPGA processor.

6. A receiving method of a mobile omnidirectional wide coverage microwave wireless energy receiving system according to any one of claims 1 to 5, characterized in that: The receiving method comprises the following steps: S1: Receives the signal from the transmitter through the wireless data transmission module, and forwards the antenna array position and array orientation information to the signal processing subsystem; S2: The signal processing system collects the antenna array position and array orientation information, analyzes the information and forwards it to the two-dimensional turntable subsystem; S3: Receive and encode information through the two-dimensional turntable subsystem, and drive the motor to control the pitch and azimuth rotation of the receiving antenna array.

7. The receiving method of the mobile omnidirectional wide coverage microwave wireless energy receiving system according to claim 6, characterized in that: The wireless data transmission module in S1 adopts a half-duplex communication mode.

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