CN105162265A - Multi-antenna receiving-based radio electromagnetic wave energy collection device and method - Google Patents
Multi-antenna receiving-based radio electromagnetic wave energy collection device and method Download PDFInfo
- Publication number
- CN105162265A CN105162265A CN201510586527.1A CN201510586527A CN105162265A CN 105162265 A CN105162265 A CN 105162265A CN 201510586527 A CN201510586527 A CN 201510586527A CN 105162265 A CN105162265 A CN 105162265A
- Authority
- CN
- China
- Prior art keywords
- receiving
- antenna
- energy
- receiving terminal
- transmitting terminal
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Abstract
The invention discloses multi-antenna receiving-based radio electromagnetic wave energy collection device and method. The multi-antenna receiving-based radio electromagnetic wave energy collection device comprises a receiving terminal and a transmitting terminal, wherein the receiving terminal comprises an antenna module, a microprocessor and an energy storage module; the antenna module comprises receiving antennas and LC matching circuits; the transmitting terminal transmits a training sequence; the receiving terminal carries out channel estimation by receiving the training sequence, and obtains phase deviation of electromagnetic waves received by various antennas in a calculation or table query manner; the transmitting terminal transmits the electromagnetic valves; and various receiving antennas deviate the phases of the received electromagnetic waves according to the phase deviation values obtained in the previous step and superpose the phases, so that the total received energy power of the receiving terminal reaches the maximum. According to the multi-antenna receiving-based radio electromagnetic wave energy collection device and method, the energy receiving efficiency can be improved.
Description
Technical field
The invention belongs to Internet of Things field, major technical fields relates to the Power supply of Internet of things node, is specifically related to a kind of radio magnetic wave electricity energy harvester based on multiple antennas reception and method.
Background technology
The appearance of wireless energy acquisition technique, makes the wireless power of Internet of things node come true.The wireless power to Internet of things node is realized by wireless energy acquisition technique, avoid laying power line, or change the trouble of battery, Internet of things node is laid convenient, layout density is larger, applicable scene is more, and working life is longer, and considerably increases fail safe and the convenience of use.
At present, relate to wireless charging technology and mainly contain induction, magnetic field resonance type and radio waves.
Induction employing a pair coil is used for transmitting and received current, primary coil is by the alternating current of certain frequency, in secondary coil, certain electric current is produced by electromagnetic induction principle, thus energy is transferred to receiving terminal from transmission ends, belong to inductively in-plant, charging distance is very short.
Magnetic field resonance type is by energy dispensing device, form with energy acceptance device, two devices are resonated in certain frequency, carry out energy exchange to each other, but exchange Distance geometry coil dimension aspect and have very high requirement, once the distance changed between transmitting and receiving node or change coil dimension, received power will sharply decline, the limitation of application existence self.
Wireless electromagnetic waves, mainly adopts radio-frequency technique, is made up of microwave launcher and microwave receiving device, similar wireless communication technology, not only can carry out information transmit-receive by antenna, can also carry out energy transmitting-receiving.Wireless electromagnetic waves can realize longer-distance wireless charging, but compare induction and magnetic field resonance type, due to electromagnetic loss, the energy that receiving node gathers is faint, and in energy acceptance process, also there is the factors such as electric leakage, receiving efficiency be low, range of application is very limited.
Summary of the invention
In order to overcome the shortcoming of existing radio magnetic wave formula energy acquisition technology existence with not enough, the invention provides a kind of radio magnetic wave electricity energy harvester based on multiple antennas reception and method, can when transmitting power be certain, increase the power receiving wireless energy to greatest extent, realize the charging of longer-distance wireless energy.
The technical solution used in the present invention:
A kind of radio magnetic wave electricity energy harvester received based on multiple antennas, comprise receiving terminal and transmitting terminal, described receiving terminal comprises Anneta module, obtains microprocessor and the energy-storage module of reception antenna phase pushing figure for the treatment of the training sequence of antenna reception, described microprocessor is interconnected with Anneta module and energy-storage module respectively, described energy-storage module and Anneta module are interconnected, described Anneta module comprises the reception antenna and LC match circuit that connect successively, described reception antenna and LC match circuit are multiple, and one_to_one corresponding.
Described transmitting terminal is radio frequency sending set.
Described microprocessor is single-chip microcomputer or digital signal processor.
Based on the radio magnetic wave energy-collecting method that multiple antennas receives, comprise the steps:
S1 transmitting terminal sends training sequence to receiving terminal;
S2 receiving terminal received training sequence, by microprocessor computing, carries out the channel estimating of each antenna;
S3 according to channel estimation value by calculate or the mode of table lookup obtains the phase deviation weights of each reception antenna;
S4 transmitting terminal emitting electromagnetic wave, the phase deviation weights that each reception antenna obtains according to S4 offset the electromagnetic phase place of reception, and are superposed by the electromagnetic wave that each antenna receives.
When transmitting terminal and receiving terminal relative position change, or exceed certain threshold value computing time apart from last phase shift, or when disturbing obvious, reentering the preparatory stage carries out phase shift weight computing and adjustment, guarantee that the energy work rate that receiving terminal receives keeps maximum.
Beneficial effect of the present invention:
This method receives wireless electromagnetic wave energy by multiple antennas, and improve energy acceptance efficiency, make the energy work rate of receiving terminal collection reach maximum, under can being applied in existing appointed condition, structure is simple.
Accompanying drawing explanation
Fig. 1 is the structured flowchart of apparatus of the present invention;
Fig. 2 is workflow diagram of the present invention.
Embodiment
Below in conjunction with embodiment and accompanying drawing, the present invention is described in further detail, but embodiments of the present invention are not limited thereto.
Embodiment
As shown in Figure 1, a kind of radio magnetic wave electricity energy harvester based on multiple antennas reception and method, comprise receiving terminal and transmitting terminal, described receiving terminal comprises Anneta module, obtains microprocessor and the energy-storage module of reception antenna phase deviation weights for the treatment of the training sequence of antenna reception, described microprocessor is interconnected with Anneta module and energy-storage module respectively, described energy-storage module and Anneta module are interconnected, described Anneta module comprises the reception antenna and LC match circuit that connect successively, described reception antenna and LC match circuit are multiple, and one_to_one corresponding.
Described transmitting terminal is radio frequency sending set, described microprocessor is single-chip microcomputer or the digital signal processor (DSP) of low-power consumption class, microprocessor is used for processing the training sequence that each antenna receives, carry out channel estimating, by calculate or the mode of table lookup obtains each reception antenna and receives electromagnetic phase shift and realize the control to transmitting-receiving energy.The present invention can select the microcontroller of TI company MSP430 series, and mainly microprocessor uses under can being in low-power consumption mode, and electromagnetic energy is fully stored.
Described receiving terminal is different from single antenna reception, connects and composes Anneta module by multiple reception antenna and LC match circuit.
As shown in Figure 2, a kind of radio magnetic wave energy-collecting method received based on multiple antennas, comprises the steps:
In whole process, main point two stages, preparatory stage and energy transmitting-receiving stage.
The described preparatory stage is, transmitting terminal is directly to receiving terminal transmitting training sequence.Transmitting terminal is that producer manufactures according to national standard, and the antenna in transmitting terminal can adopt directional antenna, can aim at receiving terminal, realizes the directional transmissions of wireless electromagnetic wave energy, improves the efficiency of transmission.Training sequence is the sequence that transmitting-receiving two-end is known altogether, for synchronously, corrects phase shift and estimates channel.
After each reception antenna of receiving terminal receives training sequence, by the computing of microprocessor, estimate the channel fading of each reception antenna and transmitting terminal, obtain each reception antenna according to the different fading information of each channel by calculating or table lookup mode and receive electromagnetic phase shift.The energy transmitting-receiving stage is entered after completing.
In the energy transmitting-receiving stage, transmitting terminal aims at receiving terminal emitting electromagnetic wave by directional antenna, each reception antenna phase-shift value arranges and obtained by the preparatory stage, and energy, to superposing after the reception electromagnetic phase shift of each reception antenna, is stored by storage module by receiving terminal.Receiving terminal can finely tune the phase shift of each reception antenna at set intervals, if received power all can not be made to increase, then can judge that the power receiving wireless electromagnetic wave energy has reached maximum.
When transmitting terminal and receiving terminal relative position change, or exceed certain threshold value computing time apart from last phase shift, or when disturbing obvious, system reenters each reception antenna phase shift of preparatory stage calculating adjustment, the energy work rate received in the receiving terminal unit interval is made to keep maximum, then energy storage best results.
Above-described embodiment is the present invention's preferably execution mode; but embodiments of the present invention are not limited by the examples; change, the modification done under other any does not deviate from Spirit Essence of the present invention and principle, substitute, combine, simplify; all should be the substitute mode of equivalence, be included within protection scope of the present invention.
Claims (5)
1. the radio magnetic wave electricity energy harvester received based on multiple antennas, it is characterized in that, comprise receiving terminal and transmitting terminal, described receiving terminal comprises Anneta module, obtains microprocessor and the energy-storage module of reception antenna phase pushing figure for the treatment of the training sequence of antenna reception, described microprocessor is interconnected with Anneta module and energy-storage module respectively, described energy-storage module and Anneta module are interconnected, described Anneta module comprises the reception antenna and LC match circuit that connect successively, described reception antenna and LC match circuit are multiple, and one_to_one corresponding.
2. device according to claim 1, is characterized in that, described transmitting terminal is radio frequency sending set.
3. device according to claim 1, is characterized in that, described microprocessor is single-chip microcomputer or digital signal processor.
4. the acquisition method of the device according to any one of claim 1-3, is characterized in that, comprises the steps:
S1 transmitting terminal sends training sequence to receiving terminal;
S2 receiving terminal received training sequence, by microprocessor computing, carries out the channel estimating of each antenna;
S3 according to channel estimation value by calculate or the mode of table lookup obtains the phase deviation weights of each reception antenna;
S4 transmitting terminal emitting electromagnetic wave, the phase deviation weights that each reception antenna obtains according to S4 offset the electromagnetic phase place of reception, and are superposed by the electromagnetic wave that each antenna receives.
5. acquisition method according to claim 4, it is characterized in that, when transmitting terminal and receiving terminal relative position change, or exceed certain threshold value computing time apart from last phase shift, or when disturbing obvious, reentering the preparatory stage carries out phase shift weight computing and adjustment, guarantees that the energy work rate that receiving terminal receives keeps maximum.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510586527.1A CN105162265A (en) | 2015-09-15 | 2015-09-15 | Multi-antenna receiving-based radio electromagnetic wave energy collection device and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510586527.1A CN105162265A (en) | 2015-09-15 | 2015-09-15 | Multi-antenna receiving-based radio electromagnetic wave energy collection device and method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105162265A true CN105162265A (en) | 2015-12-16 |
Family
ID=54803052
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510586527.1A Pending CN105162265A (en) | 2015-09-15 | 2015-09-15 | Multi-antenna receiving-based radio electromagnetic wave energy collection device and method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105162265A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106211336A (en) * | 2016-06-17 | 2016-12-07 | 深圳大学 | Multi-node distributed radio frequency wireless charging method |
| CN108879894A (en) * | 2018-06-07 | 2018-11-23 | 深圳市宇能无线技术有限公司 | A kind of multiobjective selection wireless power transfer method and device based on focus wave |
| CN110601385A (en) * | 2019-08-19 | 2019-12-20 | 南京航空航天大学 | Method for realizing microwave energy directional radiation through maximum power feedback of receiving end |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1868152A (en) * | 2003-10-17 | 2006-11-22 | 摩托罗拉公司 | Method and apparatus for transmission and reception within an OFDM communication system |
| CN101359928A (en) * | 2007-08-02 | 2009-02-04 | 鼎桥通信技术有限公司 | Frequency deviation estimation method |
| CN101578829A (en) * | 2007-03-21 | 2009-11-11 | 中兴通讯股份有限公司 | A channel estimation method |
| CN102124709A (en) * | 2008-08-20 | 2011-07-13 | 高通股份有限公司 | Uplink SDMA pilot estimation |
| CN103944842A (en) * | 2013-01-23 | 2014-07-23 | 华为技术有限公司 | Channel equalization method and communication equipment |
| CN104168241A (en) * | 2013-05-16 | 2014-11-26 | 华为技术有限公司 | Multiple-input multiple-output orthogonal frequency division multiplexing communication system and signal compensation method |
-
2015
- 2015-09-15 CN CN201510586527.1A patent/CN105162265A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1868152A (en) * | 2003-10-17 | 2006-11-22 | 摩托罗拉公司 | Method and apparatus for transmission and reception within an OFDM communication system |
| CN101578829A (en) * | 2007-03-21 | 2009-11-11 | 中兴通讯股份有限公司 | A channel estimation method |
| CN101359928A (en) * | 2007-08-02 | 2009-02-04 | 鼎桥通信技术有限公司 | Frequency deviation estimation method |
| CN102124709A (en) * | 2008-08-20 | 2011-07-13 | 高通股份有限公司 | Uplink SDMA pilot estimation |
| CN103944842A (en) * | 2013-01-23 | 2014-07-23 | 华为技术有限公司 | Channel equalization method and communication equipment |
| CN104168241A (en) * | 2013-05-16 | 2014-11-26 | 华为技术有限公司 | Multiple-input multiple-output orthogonal frequency division multiplexing communication system and signal compensation method |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106211336A (en) * | 2016-06-17 | 2016-12-07 | 深圳大学 | Multi-node distributed radio frequency wireless charging method |
| CN106211336B (en) * | 2016-06-17 | 2020-03-10 | 深圳大学 | Multi-node distributed radio frequency wireless charging method |
| CN108879894A (en) * | 2018-06-07 | 2018-11-23 | 深圳市宇能无线技术有限公司 | A kind of multiobjective selection wireless power transfer method and device based on focus wave |
| CN110601385A (en) * | 2019-08-19 | 2019-12-20 | 南京航空航天大学 | Method for realizing microwave energy directional radiation through maximum power feedback of receiving end |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN204992795U (en) | Radio magnetic wave energy collection system based on many antennas are received | |
| CN103414255B (en) | Self-tuning magnetic-coupling resonance wireless energy transmission system and self-tuning method thereof | |
| US10027377B2 (en) | Wireless power supply apparatus | |
| CN105245036A (en) | Multiple-transmitting unit-based wireless electromagnetic wave energy collection method and device | |
| JP4875209B1 (en) | Impedance matching device, wireless power transmission device, and control method | |
| CN103414261B (en) | Variable-coupling coefficient magnetic resonance wireless power transmission system and method | |
| US20120038220A1 (en) | Wireless power transmission apparatus and transmission method thereof | |
| RU2011146047A (en) | NON-CONTACT ELECTRIC POWER SUPPLY EQUIPMENT, NON-CONTACT ELECTRIC POWER RECEIVER AND NON-CONTACT ELECTRIC POWER SUPPLY SYSTEM | |
| CN102170177A (en) | High-power wireless power transmission system | |
| WO2013169040A1 (en) | Method and apparatus for 3d orientation-free wireless power transfer | |
| CN112219333B (en) | Wireless charging transmitting device, transmitting method and wireless charging system | |
| JP5544386B2 (en) | Impedance matching device and control method | |
| CN105162265A (en) | Multi-antenna receiving-based radio electromagnetic wave energy collection device and method | |
| CN110350670A (en) | A kind of Universal wireless charging transmitting end device and control method | |
| CN107394901B (en) | Inhibit the wireless power transmission coil design approaches of frequency splitting | |
| Guo et al. | High-data-frequency-ratio information transmission method for fast dynamic response SWPIT systems based on DASK modulation | |
| CN103312050A (en) | Active-receiving wireless energy transmission method and device | |
| CN107749772B (en) | Wireless energy information synchronous transmission system | |
| CN107508388B (en) | Design method of magnetic coupling resonance high-efficiency electric energy transmission coil | |
| CN204992796U (en) | Radio magnetic wave energy collection system based on many emission unit | |
| CN103684483A (en) | Data and/or command signal transmission device with antenna arrangements | |
| CN104638713A (en) | Multi-coil wireless charger | |
| JP5819502B2 (en) | Impedance matching device and control method | |
| CN110445259A (en) | A kind of improved efficiency method based on multi-emitting radio energy transmission system | |
| Noguchi et al. | Data transmission for resonant-type wireless power transfer |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20151216 |