CN107947390B - Intelligent household wireless power supply system and method - Google Patents
Intelligent household wireless power supply system and method Download PDFInfo
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- CN107947390B CN107947390B CN201711169957.9A CN201711169957A CN107947390B CN 107947390 B CN107947390 B CN 107947390B CN 201711169957 A CN201711169957 A CN 201711169957A CN 107947390 B CN107947390 B CN 107947390B
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
- H02J50/20—Circuit arrangements or systems for wireless supply or distribution of electric power using microwaves or radio frequency waves
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Abstract
The invention discloses an intelligent household wireless power supply system and method, wherein the system comprises the following steps: a plurality of wireless power supply devices, each wireless power supply device being connected with at least an adjacent wireless power supply device overlapping a power supply coverage area, each wireless power supply device comprising: the radio frequency transmission module generates and transmits microwave signals, and comprises a radio frequency signal generating device and a radio frequency antenna module; a communication module that receives a charging request signal from a wireless charging receiving terminal and a position signal of the wireless charging receiving terminal; the control unit is used for determining whether the wireless charging receiving end is in an overlapped power supply coverage range with the adjacent wireless power supply device or not based on the position signals and the distribution information of the wireless power supply devices in the wireless power supply node network, and determining whether the wireless charging receiving end is charged by the wireless power supply device under the condition of being in the overlapped power supply coverage range. The invention can realize wide coverage range, intelligent charging, positioning and tracking and improve the wireless charging efficiency.
Description
Technical Field
The invention belongs to the technical field of wireless power supply, and particularly relates to an intelligent household wireless power supply system and method.
Background
Along with the improvement of the living standard of people, the living rhythm is accelerated, the intelligent home concept is accepted by people more and more, and the intelligent home system is more and more convenient for our life. The wireless power supply technology is becoming popular with smart home users more and more because of converting wired power transmission into wireless power transmission, avoiding complicated connecting wires, effectively saving wires and cables, and facilitating movement and operation. The wireless power supply system adopting the wireless power supply technology comprises a wireless power supply transmitter and a wireless power supply receiver, wherein the wireless power supply transmitter is used for wirelessly supplying power to the wireless power supply transmitter.
The wireless charging method of the existing wireless power supply system comprises the following steps: (1) electromagnetic induction mode; (2) means of magnetic resonance; and (3) microwave energy transmission mode. Depending on the state of the art, the former two approaches can only be charged in close proximity (no more than 1 meter, even requiring contact). The third mode is the mode with the farthest wireless charging distance in the three modes, and is the only mode capable of medium-long distance wireless charging at present, and the general process of microwave energy transmission is to convert direct current into microwave signals, namely DC-RF, by utilizing a radio frequency signal source; the microwave power is amplified by the power amplifier and radiated to free space, and then the microwave energy is received by the rectifying antenna and rectified to provide direct current electric energy for the load. Although the wireless charging distance of the microwave energy transmission mode is relatively far, the transmission distance of the wireless charging is generally about 5 meters, not more than 10 meters and not far enough under the influence of the power, the cost and the like of a microwave source. Therefore, the wireless charging method and technology applied to the smart home in the market at present have the following general problems: (1) the charging distances are very close and inconvenient to move; (2) The coverage area of a single transmitting end is small, charging efficiency is not high.
Therefore, the existing intelligent home system is lack of a complete wireless power supply system to solve the problems of the existing wireless charging mode.
Disclosure of Invention
Accordingly, the present invention is directed to a smart home wireless power supply system and method that substantially obviates one or more problems due to limitations and disadvantages of the related art.
The technical scheme of the invention is as follows:
According to an aspect of the present invention, there is provided a wireless power supply system comprising a plurality of wireless power supply devices forming a network of wireless power supply nodes, each wireless power supply device being wired or wirelessly connected to at least an adjacent wireless power supply device overlapping a power supply coverage area, wherein each wireless power supply device comprises:
the radio frequency transmission module is used for generating and transmitting microwave signals and comprises a radio frequency signal generating device and a radio frequency antenna module;
A communication module that receives a charging request signal from a wireless charging receiving terminal and a position signal of the wireless charging receiving terminal;
And the control unit is used for determining whether the wireless charging receiving end is in an overlapping power supply coverage range with an adjacent wireless power supply device or not based on the position signal and the distribution information of the wireless power supply devices in the wireless power supply node network, and determining whether the wireless charging receiving end is charged by the wireless power supply device under the condition that the wireless charging receiving end is in the overlapping power supply coverage range.
Preferably, the control unit controls the radio frequency communication unit to radiate a microwave signal for charging when determining that the wireless power supply device is charging the wireless charging receiving end; and the wireless power supply device for charging the wireless power supply device sends a standby instruction or a charging party instruction to the adjacent wireless power supply devices with overlapped power supply coverage areas in a wired or wireless mode.
Preferably, one wireless power supply device in the wireless power supply node network receives a standby instruction or a charging party instruction from an adjacent wireless power supply device to enter a charging state, or enters the charging state after the current charging task is completed.
Preferably, each wireless power supply device is installed at a different location in the indoor space.
Preferably, each wireless power supply device is installed at a ceiling lamp position of the indoor space.
Preferably, a wireless power supply device is arranged in a space between the LED lamp panel of the top lamp and the wall surface.
According to another aspect of the present invention, there is provided a wireless power supply method of a wireless power supply system including a plurality of wireless power supply devices forming a wireless power supply node network, each wireless power supply device being wired or wirelessly connected to at least an adjacent wireless power supply device overlapping a power supply coverage area, the method performed by each wireless power supply device comprising the steps of:
receiving a charging request signal sent by a wireless charging receiving end and a position signal of the wireless charging receiving end;
And determining whether the wireless charging receiving end is in a power supply coverage area overlapped with an adjacent wireless power supply device or not based on the received position signals and the distribution information of the wireless power supply devices in the wireless power supply node network, and determining whether the wireless charging receiving end is charged by the wireless charging receiving end under the condition that the wireless charging receiving end is in the power supply coverage area overlapped.
Preferably, the method further comprises: when the wireless charging receiving end is determined to be charged by the self, controlling the radio frequency communication unit to radiate a microwave signal for charging, and sending a standby instruction or a charging party instruction to adjacent wireless power supply devices with overlapped current power supply coverage areas in a wired or wireless mode.
Preferably, the method further comprises: the wireless power supply device receives a standby instruction or a charging party instruction from an adjacent wireless power supply device to enter a charging state, or enters the charging state after the current charging task is completed.
Preferably, the method further comprises: and the wireless power supply device charges the wireless charging receiving end under the condition that the wireless charging receiving end is not in the overlapped power supply coverage range.
Preferably, the wireless power supply device determines whether to charge the wireless charging receiving end by itself based on the distance between the wireless power supply device and the adjacent wireless power supply device and the wireless charging receiving end under the condition that the wireless charging receiving end is in an overlapped power supply coverage range.
Preferably, before the step of determining whether to charge the wireless charging receiving terminal by itself, the method further includes: the distance between the wireless power supply device and the adjacent wireless power supply device is sent to the adjacent wireless power supply device, and the distance between the wireless power supply device and the adjacent wireless power supply device is received.
The wireless charging system and the wireless charging method are convenient to network, can realize wide coverage range, intelligent charging and positioning tracking, and greatly improve the wireless charging efficiency.
It will be appreciated by those skilled in the art that the objects and advantages that can be achieved with the present invention are not limited to the above-described specific ones, and that the above and other objects that can be achieved with the present invention will be more clearly understood from the following detailed description.
Drawings
Further objects, functions and advantages of the present invention will be clarified by the following description of embodiments of the present invention with reference to the accompanying drawings, in which:
Fig. 1 is a schematic diagram of a wireless power supply system according to an embodiment of the invention.
Fig. 2 is a schematic structural diagram of a transmitting end and a receiving end according to an embodiment of the present invention.
Fig. 3 is a flow chart of a wireless charging method according to an embodiment of the invention.
Fig. 4 is a schematic diagram of a mounting position of a transmitting end according to an embodiment of the invention.
Detailed Description
Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. Examples of these preferred embodiments are illustrated in the accompanying drawings. The embodiments of the present invention shown in the drawings and described according to the drawings are merely exemplary, and the technical spirit of the present invention and its main operation are not limited to these embodiments.
It should be noted here that, in order to avoid obscuring the present invention due to unnecessary details, only structures and/or processing steps closely related to the solution according to the present invention are shown in the drawings, while other details not greatly related to the present invention are omitted.
The wireless charging system and the wireless charging method thereof of the invention are described below by taking an example of an intelligent home wireless charging application scenario, but the invention is not limited to the wireless charging system and the wireless charging method thereof, and can be applied to charging scenarios of electronic devices other than intelligent home electronic devices.
Fig. 1 is a schematic diagram of a smart home wireless power supply system according to an embodiment of the invention. As shown in fig. 1, the wireless power supply system of the present invention includes a plurality (more than 2) of wireless power supply devices (i.e., devices that emit microwave signals), 5 wireless power supply devices 1-1 to 1-5 are shown in fig. 1, and these wireless power supply devices are networked to form a wireless power supply node network, and each wireless power supply device is wired or wirelessly connected to at least adjacent wireless power supply devices overlapping with a power supply coverage area. Hereinafter, for convenience of description, the wireless power supply device will be simply referred to as a transmitting end. These transmitting terminals may be installed at different locations in a building for charging infinitely chargeable electronic devices (wireless charging receiving terminals) within their coverage area, respectively, and the transmitting terminals 1-1 to 1-5 in fig. 1 may be installed in different additions of a house, such as a main sleeping, a sub-sleeping, a guest sleeping, a living room, and a study room, respectively, as an example. Also shown in fig. 1 are a plurality of receiving ends 2-1 to 2-5. The number of transmitting ends and receiving ends shown in fig. 1 is merely an example, and the present invention is not limited thereto.
In the embodiment of the invention, the microwave transmission power of each transmitting end can be the same or different.
As shown in fig. 2, the transmitting end mainly includes: the system comprises a power management module, a radio frequency transmission module, a communication module and a control module, wherein the radio frequency transmission module further comprises a radio frequency signal generating device and a radio frequency antenna module.
The power management module converts the alternating voltage 220V into a voltage value required by a transmitting end through a circuit formed by the power management chips, and the power management module is an AC-DC or DC-DC conversion circuit and the like.
The radio frequency signal generating device generates microwave energy signals through circuits such as a radio frequency chip, a power amplifier and the like and radiates out according to a certain channel through the radio frequency antenna module. The rf antenna module may employ a common microstrip patch array antenna, but is not limited thereto.
The communication module is used for realizing signal transmission between the transmitting ends and between the transmitting end and the receiving end, and the communication module can be, for example, a Wi-Fi communication module, a Bluetooth communication module or an infrared communication module, but is not limited to the Wi-Fi communication module, the Bluetooth communication module or the infrared communication module. Alternatively, the transmitting ends can be connected by wires, so that the signals can be transmitted by wires.
The control module is, for example, but not limited to, an ARM, an FPGA and other chips, is used for realizing information processing and signal control, and can also be used for overall control of the operation of each component of the transmitting end.
With continued reference to fig. 2, the receiving end includes, for example: the device comprises a receiving antenna, a signal control module, a rectifying and voltage stabilizing circuit and charging electronic equipment. The receiving antenna is used for receiving and transmitting microwave signals and may be a microstrip patch array antenna. The signal control module is used for generating a signal for requesting charging and positioning the position information of the charging equipment and sending the signal to the transmitting end, and the signal control module can comprise circuits such as an ARM chip and a radio frequency chip. The rectifying circuit in the rectifying and voltage stabilizing circuit may be, for example, a diode rectifying circuit, and the voltage stabilizing circuit may be a common DC voltage stabilizing circuit. The charging electronic device is usually a low-power electronic device, such as a smart bracelet, a PAD, a hearing aid, a smart sweeper, a mobile phone, etc., but is not limited thereto.
The transmitting end may be mounted in a central location of its coverage area, such as a fixed location within each room of a home. As a preferred example, the emitting end is installed at a ceiling lamp or a ceiling lamp position in each room, for example, at a space between the LED lamp panel and the wall surface. Of course, the transmitting end can be arranged at other fixed positions without affecting the beautiful appearance of the room.
Fig. 4 is an exploded view of the mounting position of the transmitting end according to an embodiment of the present invention. As shown in fig. 4, an upward chassis B is installed between the LED lamp panel C and the wall surface of the dome lamp, the transmitting end F is disposed in the chassis B, that is, the transmitting end is installed between the LED lamp panel and the wall surface and supported by the chassis, and the power lines A1 and A2 are LED out from the electric wires in the wall body and respectively connected to the LED lamp panel and the transmitting end for providing power for the LED lamp and the transmitting end. The lamp shade, the lamp panel and the chassis of the transmitting end of the dome lamp can be fixed on the wall surface through fixing columns (such as studs). The mounting structure of fig. 4 is only schematic, and the size of the chassis can be flexibly determined according to practical situations. The emission end is covered by the lampshade D or the chassis B, so that the appearance is not affected, and the emission end can be well protected from dust.
In the embodiment of the invention, the number of the transmitting end networking depends on the indoor area and the number of chargeable electronic equipment. The transmitting ends can be contacted by a wired or wireless communication mode.
A wireless power supply method implemented by the wireless power supply system as above is described below with reference to fig. 3. As shown in fig. 3, the wireless power supply method includes the steps of:
In step S310, the receiving end sends a location signal and a charging request signal to the transmitting end.
Assume that the receiving terminal 2-1 in fig. 1 needs to be charged to issue a charging request signal and a position signal of the receiving terminal 2-1. As an example, the charging request signal and the location signal of the receiving end 2-1 may be transmitted in one message, but not limited thereto.
If the receiving end 2-1 is located only in the power coverage area of the transmitting end 1-2 (e.g., the receiving end 2-1 is on the main level), only the transmitting end 1-2 receives the message from the receiving end and performs the subsequent processing (step S321-step S327). If the receiving terminal 2-1 is located in the overlapping power coverage of the transmitting terminal 1-2 and the transmitting terminal 1-3, the transmitting terminals 1-2 and 1-3 each receive the message of the receiving terminal and perform the subsequent processing (step S321-step S327 and step S331-step S337). Shown in fig. 3 is a case where both the transmitting ends 1-2 and 1-3 receive the charging request message of the receiving end.
In steps S321 and S331, the transmitting terminals 1-2 and 1-3 respectively receive and identify the charging request signal and the position signal sent by the wireless charging receiving terminal.
Steps S323-S325 and steps S333-S335, the transmitting ends 1-2 and 1-3 each determine, based on the received position signal and the distribution information of the transmitting ends in the network, whether the receiving end is in a power supply coverage area overlapping with the adjacent transmitting end, and determine whether to charge the receiving end by themselves in the case that the receiving end is in an overlapping power supply coverage area.
More specifically, for the transmitting terminal 1-2, it may determine whether the receiving terminal is in a power coverage area overlapping with an adjacent transmitting terminal based on the location information of the receiving terminal 2-1 and the distribution information of each transmitting terminal in the network stored in advance in step S323, and if it is determined that the receiving terminal is not in an overlapping power coverage area (i.e., is only in the coverage area of the transmitting terminal 1-2), the transmitting terminal 1-2 directly charges the wireless charging receiving terminal.
In the case where it is determined that the receiving end is in the overlapping power coverage of the transmitting ends 1-2 and 1-3, the transmitting end 1-2 may determine who should be charged by (transmitting end 1-2 or 1-3) using the control module in step S325. As an example, based on the location information of the receiving end 2-1 and the distribution information of each transmitting end in the network stored in advance, the transmitting end 1-2 may calculate the distance between the receiving end and the transmitting ends 1-2 and 1-3, and by selecting a shorter distance, the transmitting end 1-2 may determine whether the receiving end 2-1 is charged by itself or the transmitting end 1-3. If the receiving end is equidistant from the two transmitting ends, the transmitting end may be selected as the transmitting end for charging the receiving end based on a predetermined priority or randomly. As another example, upon determining that the receiving end is in the power coverage area where the transmitting ends 1-2 and 1-3 overlap, the transmitting end 1-2 may transmit its distance from the receiving end 2-1 to the transmitting end through a communication module or a wired connection.
When it is determined that the wireless charging receiving terminal is charged by itself, the transmitting terminal 1-2 controls the radio frequency communication unit to radiate a microwave signal for charging in step S327, and transmits a standby indication or a charging party indication to the adjacent wireless power supply devices overlapping the current power supply coverage area through the communication module or a wired manner. In this way, the transmitting terminal 1-3 may enter the charging state after receiving the standby instruction or the charging party instruction from the adjacent transmitting terminal 1-2, or enter the charging state after completing the charging task in the case where the charging task is currently present.
Similarly, the transmitting end 1-3 also independently performs the same processing steps (S333-S337).
Based on the charging method, when the receiving end moves to the coverage area crossing range of the two emitting ends of the bedroom and the living room, the emitting end of the bedroom is close to the receiving end, the emitting end of the bedroom sends a standby signal to the emitting end of the living room, and the emitting end of the living room preferentially executes the charging task and then enters a standby mode.
The wireless charging system and the wireless charging method are convenient to network, can realize wide coverage range, intelligent charging and positioning tracking, and greatly improve the wireless charging efficiency.
In the embodiment of the invention, when the transmitting end does not have a charging task, the transmitting end can automatically enter a standby mode, and when the transmitting end has the charging task, the transmitting end can automatically wake up the working mode. And when the receiving end moves to the coverage range of the two transmitting ends, the transmitting end close to the receiving end can be used as the charging transmitting end, a standby signal is sent to the other transmitting end, and the other transmitting end can directly stand by under the current no-task condition or enter a standby mode after the charging task is preferentially executed.
The intelligent home wireless charging transmitting terminal networking can realize indoor wireless power supply full coverage, and mobile charging electronic equipment can be randomly and wirelessly charged in any indoor place. Preferably, the transmitting end is perfectly combined with the dome lamp and is arranged at the position of the indoor dome lamp, so that the microwave energy transmission path is free from shielding, and the wireless charging efficiency is improved. In addition, the invention can realize large wireless power supply coverage without excessive microwave source power, and also realize the purpose of energy saving.
It should be understood that two or more modules in the apparatus of the present invention described herein may be combined into one module, and each module may be further subdivided into a plurality of sub-modules, without affecting the implementation of the present invention.
Portions of the present invention may be implemented in hardware, software, firmware, or a combination thereof. In the above-described embodiments, the various steps or methods may be implemented in software or firmware stored in a memory and executed by a suitable instruction execution system. For example, if implemented in hardware, as in another embodiment, may be implemented using any one or combination of the following techniques, as is known in the art: discrete logic circuits having logic gates for implementing logic functions on data signals, application specific integrated circuits having suitable combinational logic gates, programmable Gate Arrays (PGAs), field Programmable Gate Arrays (FPGAs), and the like.
Logic and/or steps represented in the flowcharts or otherwise described herein, e.g., a ordered listing of executable instructions for implementing logical functions, can be embodied in any computer-readable medium for use by or in connection with an instruction execution system, apparatus, or device, such as a computer-based system, processor-containing system, or other system that can fetch the instructions from the instruction execution system, apparatus, or device and execute the instructions.
Features that are described and/or illustrated above with respect to one embodiment may be used in the same way or in a similar way in one or more other embodiments and/or in combination with or instead of the features of the other embodiments.
Other embodiments of the invention will be apparent to and understood by those skilled in the art from consideration of the specification and practice of the invention disclosed herein. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the invention being indicated by the following claims.
Claims (9)
1. A wireless power supply system comprising a plurality of wireless power supply devices forming a network of wireless power supply nodes, each wireless power supply device being wired or wirelessly connected to at least an adjacent wireless power supply device overlapping a power supply coverage area, wherein each wireless power supply device comprises:
the radio frequency transmission module is used for generating and transmitting microwave signals and comprises a radio frequency signal generating device and a radio frequency antenna module;
A communication module that receives a charging request signal from a wireless charging receiving terminal and a position signal of the wireless charging receiving terminal;
A control unit, which determines whether the wireless charging receiving end is in an overlapping power supply coverage range with an adjacent wireless power supply device based on the position signal and distribution information of the wireless power supply devices in a wireless power supply node network, and determines whether the wireless charging receiving end is charged by the wireless power supply device based on the distance between the wireless power supply device and the adjacent wireless power supply device in the overlapping power supply coverage range;
when the control unit determines that the wireless power supply device is charged for the wireless charging receiving end, the control unit controls the radio frequency communication unit to radiate a microwave signal for charging; and
And the wireless power supply device for charging the wireless power supply device sends a standby instruction or a charging party instruction to the adjacent wireless power supply devices with overlapped power supply coverage areas in a wired or wireless mode.
2. The system of claim 1, wherein one wireless power supply device in the network of wireless power supply nodes receives a standby indication or a charging party indication from a neighboring wireless power supply device to enter a state of charge, or enters a state of charge after a current charging task is completed.
3. The system of claim 1, wherein each wireless power unit is mounted at a different location in the indoor space.
4. A system according to claim 3, wherein each wireless power unit is mounted in a dome light location in the indoor space.
5. The system of claim 4, wherein an upward opening chassis is mounted between the LED panels of the dome lamp and the wall surface, and the wireless power supply is disposed in the chassis.
6. A wireless power supply method of a wireless power supply system, the wireless power supply system comprising a plurality of wireless power supply devices forming a network of wireless power supply nodes, each wireless power supply device being wired or wirelessly connected to at least an adjacent wireless power supply device overlapping a power supply coverage area, the method performed by each wireless power supply device comprising the steps of:
receiving a charging request signal sent by a wireless charging receiving end and a position signal of the wireless charging receiving end;
Determining whether the wireless charging receiving end is in a power supply coverage area overlapped with an adjacent wireless power supply device or not based on the received position signals and distribution information of the wireless power supply devices in a wireless power supply node network, and determining whether the wireless charging receiving end is charged by the wireless charging receiving end or not based on the distance between the wireless power supply device and the adjacent wireless power supply device in the overlapped power supply coverage area and the wireless charging receiving end under the condition that the wireless charging receiving end is in the overlapped power supply coverage area;
When the wireless charging receiving end is determined to be charged by the self, the radio frequency communication unit is controlled to radiate a microwave signal for charging, and a standby indication or a charging party indication is sent to adjacent wireless power supply devices with overlapping current power supply coverage areas in a wired or wireless mode.
7. The method of claim 6, wherein the method further comprises:
The wireless power supply device receives a standby instruction or a charging party instruction from an adjacent wireless power supply device to enter a charging state, or enters the charging state after the current charging task is completed.
8. The method of claim 6, wherein the method further comprises:
And the wireless power supply device charges the wireless charging receiving end under the condition that the wireless charging receiving end is not in the overlapped power supply coverage range.
9. The method of claim 6, wherein prior to the step of determining whether to charge the wireless charging receiver by itself, the method further comprises:
the distance between the wireless power supply device and the adjacent wireless power supply device is sent to the adjacent wireless power supply device, and the distance between the wireless power supply device and the adjacent wireless power supply device is received.
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| CN108599397A (en) * | 2018-05-04 | 2018-09-28 | 苏州威斯东山电子技术有限公司 | A kind of radio frequency reception end module suitable for long distance wireless charging |
| CN109635661B (en) * | 2018-11-13 | 2023-07-07 | 同济大学 | A far-field wireless charging receiving target detection method based on convolutional neural network |
| CN110429723B (en) * | 2019-07-27 | 2023-07-25 | 西南电子技术研究所（中国电子科技集团公司第十研究所） | Wireless charging microwave power transmission system |
| CN112787419A (en) * | 2019-11-04 | 2021-05-11 | 北京小米移动软件有限公司 | Wireless charging transmitter, terminal and wireless charging method |
| CN111245076B (en) * | 2020-04-23 | 2020-08-18 | 成都斯普奥汀科技有限公司 | Multi-transmit multi-receive magnetic resonance wireless charging system for medium power electronic equipment |
| CN117015918A (en) * | 2020-12-18 | 2023-11-07 | 罗伯特·博世有限公司 | Wireless charging device, system and method |
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