CN204992795U - Radio magnetic wave energy collection system based on many antennas are received - Google Patents
Radio magnetic wave energy collection system based on many antennas are received Download PDFInfo
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- CN204992795U CN204992795U CN201520714160.2U CN201520714160U CN204992795U CN 204992795 U CN204992795 U CN 204992795U CN 201520714160 U CN201520714160 U CN 201520714160U CN 204992795 U CN204992795 U CN 204992795U
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Abstract
The utility model discloses a radio magnetic wave energy collection system based on many antennas are received, including receiving terminal and transmitting terminal, the receiving terminal includes the antenna module, microprocessor and energy storage module, the antenna module includes receiving antenna and LC matching circuit, the transmitting terminal sends the trainning sequence, the receiving terminal carries out the channel estimate through receiving the trainning sequence, form inquiry mode obtains each antenna receipt electromagnetic phase excursion through calculating perhaps, transmitting terminal transmission electromagnetic wave, each receiving antenna superposes after to the electromagnetic wave phase excursion of receiving according to last one step relativity shift value that obtains again, make the total received energy power maxmizing of receiving terminal. The utility model discloses the energy can be improved and efficiency is received.
Description
Technical field
The utility model belongs to Internet of Things field, and 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 received based on multiple antennas.
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.
Utility model content
In order to overcome the shortcoming of existing radio magnetic wave formula energy acquisition technology existence with not enough, the utility model provides a kind of radio magnetic wave electricity energy harvester received based on multiple antennas, 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 adopted in the utility model:
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.
The beneficial effects of the utility model:
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 the utility model device;
Fig. 2 is workflow diagram of the present utility model.
Embodiment
Below in conjunction with embodiment and accompanying drawing, the utility model is described in further detail, but execution mode of the present utility model is 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 utility model 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 utility model preferably execution mode; but execution mode of the present utility model is not limited by the examples; change, the modification done under other any does not deviate from Spirit Essence of the present utility model and principle, substitute, combine, simplify; all should be the substitute mode of equivalence, be included within protection range of the present utility model.
Claims (3)
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, microprocessor and energy-storage module, described microprocessor is interconnected with Anneta module and energy-storage module respectively, and described energy-storage module and Anneta module are interconnected, and 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. radio magnetic wave electricity energy harvester according to claim 1, is characterized in that, described transmitting terminal is radio frequency sending set.
3. radio magnetic wave electricity energy harvester according to claim 1, is characterized in that, described microprocessor is single-chip microcomputer or digital signal processor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520714160.2U CN204992795U (en) | 2015-09-15 | 2015-09-15 | Radio magnetic wave energy collection system based on many antennas are received |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201520714160.2U CN204992795U (en) | 2015-09-15 | 2015-09-15 | Radio magnetic wave energy collection system based on many antennas are received |
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| CN204992795U true CN204992795U (en) | 2016-01-20 |
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| CN201520714160.2U Expired - Fee Related CN204992795U (en) | 2015-09-15 | 2015-09-15 | Radio magnetic wave energy collection system based on many antennas are received |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105743231A (en) * | 2016-05-04 | 2016-07-06 | 谢奇 | Dynamic wireless power supplying method and system |
| CN105848266A (en) * | 2016-05-13 | 2016-08-10 | 江苏科技大学 | Multi-antenna communication network circulating energy collection method with minimal energy consumption |
| CN106410983A (en) * | 2016-10-26 | 2017-02-15 | 太原理工大学 | Radio frequency energy acquisition system based on planar inverted-F antenna |
| WO2017133238A1 (en) * | 2016-02-01 | 2017-08-10 | 施京京 | Method and circuit for wireless transmission of high-power electrical energy |
| CN109286408A (en) * | 2018-10-15 | 2019-01-29 | 北京交通大学 | The method and energy receiver of collection of energy |
-
2015
- 2015-09-15 CN CN201520714160.2U patent/CN204992795U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017133238A1 (en) * | 2016-02-01 | 2017-08-10 | 施京京 | Method and circuit for wireless transmission of high-power electrical energy |
| CN105743231A (en) * | 2016-05-04 | 2016-07-06 | 谢奇 | Dynamic wireless power supplying method and system |
| CN105848266A (en) * | 2016-05-13 | 2016-08-10 | 江苏科技大学 | Multi-antenna communication network circulating energy collection method with minimal energy consumption |
| CN105848266B (en) * | 2016-05-13 | 2019-05-17 | 江苏科技大学 | Energy consumption minimized multi-antenna communication network circulating energy acquisition method |
| CN106410983A (en) * | 2016-10-26 | 2017-02-15 | 太原理工大学 | Radio frequency energy acquisition system based on planar inverted-F antenna |
| CN109286408A (en) * | 2018-10-15 | 2019-01-29 | 北京交通大学 | The method and energy receiver of collection of energy |
| CN109286408B (en) * | 2018-10-15 | 2020-09-08 | 北京交通大学 | Method for energy harvesting and energy receiver |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160120 Termination date: 20190915 |