CN108736945A - Single antenna passive data emission system and its implementation based on timeslice poll - Google Patents
Single antenna passive data emission system and its implementation based on timeslice poll Download PDFInfo
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- CN108736945A CN108736945A CN201710262783.4A CN201710262783A CN108736945A CN 108736945 A CN108736945 A CN 108736945A CN 201710262783 A CN201710262783 A CN 201710262783A CN 108736945 A CN108736945 A CN 108736945A
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- energy
- frequency synthesizer
- crystal oscillator
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
- H04W52/02—Power saving arrangements
- H04W52/0209—Power saving arrangements in terminal devices
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
- H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
- H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
Abstract
The present invention provides a kind of single antenna passive data emission system and its implementation based on timeslice poll, the service system includes antenna ANT, energy collection unit EC, energy management unit EM, energy storage units ES, timer TIM, crystal oscillator XO, frequency synthesizer FS, radio frequency synthesize SYN, the components such as digital baseband DB；The system complexity and low energy consumption.
Description
Technical field
The present invention relates to electronic communication system field, more particularly, to a kind of single antenna based on timeslice poll without
Source data emission system and its implementation.
Background technology
For technological layer, thing network sensing layer is used for perceiving the objective physical world, obtains the information content of physical world.
The physical quantity of objective world is varied, can not limit.Different application scenarios are concerned about different physical quantitys, therefore are to sensing
Also there are many various requirements for system and application system.Context request is different, and hardware platform, software systems and procotol are inevitable
Have very big difference.But development trend in recent years shows the data upstream transmission module of low-power consumption, or even the ring that places one's entire reliance upon
Wireless radiofrequency electric wave signal in border has vital meaning as energy source for the deployment of wireless sensor network
Justice.
Sensor node volume is small, usually carries the extremely limited battery of energy.Due to sensor node number is more, at
This requires that cheap, distributed areas are wide, and deployment region environment is complicated, some regions even personnel cannot reach, so sensing
It is unpractical that device node supplements the energy by way of replacing battery.Entrained by the radio magnetic wave in the effective use external world
Energy carrys out maximization network life cycle, unattended with great Practical significance by automation and information-based realization.
On the other hand, the above behavior master of the data traffic overwhelming majority of sensor network nodes, and current wireless sensing
Data transmission mould, either bottom chip are realized or the software deployment of protocol transport layer and application layer is often two-way to have
Data transmission is primary condition.This optimizes for the control logic of passive data emission system and leaves huge latent space.
First, complicated signal receiving circuit and chip need not be disposed, realizes that power consumption is also smaller while cost is smaller；Secondly, no
It needs to passively listen, interlock circuit, system operating mode is only activated to become actively, to drop from passive when data emit
It accomplishes something in low-power consumption.
Invention content
The present invention provides a kind of single antenna passive data emission system based on timeslice poll, the system system complex
It spends and low energy consumption.
Another object of the present invention is to provide a kind of single antenna passive data emission system based on timeslice poll
Implementation method.
In order to reach above-mentioned technique effect, technical scheme is as follows：
A kind of single antenna passive data emission system based on timeslice poll, including antenna ANT, energy collection unit
EC, energy management unit EM, energy storage units ES, timer TIM, crystal oscillator XO, frequency synthesizer FS, radio frequency synthesis
Device SYN, digital baseband DB；The aerial array ANT is connect with energy collection unit EC, energy collection unit EC also respectively with energy
Amount administrative unit EM is connected with energy storage units ES, and energy management unit EM is also connect with timer TIM, and timer TIM is also
It is connect respectively with crystal oscillator XO and energy storage units ES, crystal oscillator XO is also connect with frequency synthesizer FS, frequency
Synthesizer FS is also connect with RADIO FREQUENCY SYNTHESIZER SYN and digital baseband DB respectively, and digital baseband DB also connects with RADIO FREQUENCY SYNTHESIZER SYN
It connects, RADIO FREQUENCY SYNTHESIZER SYN is also connect with antenna ANT；Energy storage units ES is comprehensive to timer TIM, crystal oscillator XO, frequency
Clutch FS, RADIO FREQUENCY SYNTHESIZER SYN and digital baseband DB system capacities.
Further, enable signal PSO controls of the energy storage units ES by timer TIM；When PSO is to close,
The circuit that ES no longer emits to data conveys energy.
Further, the crystal oscillator XO is active form, for generating stable low-frequency clock, and is timer
TIM and frequency synthesizer FS provide low-frequency reference clock CLKREF_LF.
Further, frequency synthesizer FS according to the reference clock CLKREF_LF of input generate high frequency without skew clock
CLKREF_HF, and be input in RADIO FREQUENCY SYNTHESIZER SYN and digital baseband DB.
Further, energy management unit EM built-in regulator circuits ensure the stable electricity of energy storage units ES outputs
Signal is pressed, current energy storage state S is also consulted to energy storage units ES, if S state becomes threshold value S from unknownL, then
The unlatching of energy management unit EM controls TIM and XO；And when storage state S is less than threshold value SLWhen, carry out timer TIM and crystalline substance
The shutdown of oscillation body device XO.
A kind of implementation method of the single antenna passive data emission system based on timeslice poll, includes the following steps：
S1：Antenna ANT sustainedly and stably collects energy to energy collection unit EC from the external world, and stores and arrive energy stores list
In first ES, and energy management unit EM tracking current energy levels S；
S2：When energy level S reaches threshold value SLWhen, timer TIM and crystal oscillator XO are opened；
S3：Timer TIM carries out the poll of energy level S according to timeslice T, when energy level S meets relationship SL<S<SH
When, return to step S3；When energy level S meets S>SHWhen, enter step S4；
S4：Frequency synthesizer FS, RADIO FREQUENCY SYNTHESIZER SYN, digital baseband DB start to work, and antenna ANT stops collection of energy,
Antenna ANT enters data transmitting mode；Energy level S is persistently reduced as data are sent, and energy level S meets S at this timeL<S
<SH, return to step S3；
S5：If energy input is interrupted or exception, energy level S are reduced to threshold value SLHereinafter, then timer TIM and crystal
Oscillator XO power-off.
Compared with prior art, the advantageous effect of technical solution of the present invention is：
In the present invention, aerial array ANT sustainedly and stably collects energy to energy collection unit EC from the external world, and stores and arrive
In energy storage units ES, and energy management unit EM tracking current energy levels S；When energy level S reaches threshold value SLWhen, it is fixed
When device TIM and crystal oscillator XO open；Timer TIM carries out the poll of energy level S according to timeslice T, as energy level S
Meet relationship SL<S<SHWhen, timer TIM continues to carry out the poll of energy level S according to timeslice T；When energy level S meets S
>SHWhen, frequency synthesizer FS, RADIO FREQUENCY SYNTHESIZER SYN, digital baseband DB start to work, and antenna ANT stops collection of energy, antenna
ANT enters data transmitting mode；Energy level S is persistently reduced as data are sent, and energy level S meets S at this timeL<S<SH。
The system only relies on simple timeslice poll to complete the function of data transmission, to reduce system complexity and energy consumption.
Description of the drawings
Fig. 1 is the structure chart of present system；
Fig. 2 is energy collection unit EC structure charts of the present invention；
Fig. 3 the method for the present invention flow charts.
Specific implementation mode
The attached figures are only used for illustrative purposes and cannot be understood as limitating the patent；
In order to more preferably illustrate that the present embodiment, the certain components of attached drawing have omission, zoom in or out, actual product is not represented
Size；
To those skilled in the art, it is to be appreciated that certain known features and its explanation, which may be omitted, in attached drawing
's.
The following further describes the technical solution of the present invention with reference to the accompanying drawings and examples.
Embodiment 1
As shown in Figure 1, a kind of single antenna passive data emission system based on timeslice poll, including antenna ANT, energy
Collector unit EC, energy management unit EM, energy storage units ES, timer TIM, crystal oscillator XO, frequency synthesizer FS,
RADIO FREQUENCY SYNTHESIZER SYN, digital baseband DB；The aerial array ANT is connect with energy collection unit EC, and energy collection unit EC is also
It is connect respectively with energy management unit EM and energy storage units ES, energy management unit EM is also connect with timer TIM, timing
Device TIM is also connect with crystal oscillator XO and energy storage units ES respectively, and crystal oscillator XO also connects with frequency synthesizer FS
Connect, frequency synthesizer FS is also connect with RADIO FREQUENCY SYNTHESIZER SYN and digital baseband DB respectively, digital baseband DB also with RADIO FREQUENCY SYNTHESIZER
SYN connections, RADIO FREQUENCY SYNTHESIZER SYN are also connect with antenna ANT；Energy storage units ES to timer TIM, crystal oscillator XO,
Frequency synthesizer FS, RADIO FREQUENCY SYNTHESIZER SYN and digital baseband DB system capacities.
Enable signal PSO controls of the energy storage units ES by timer TIM；When PSO is to close, ES is no longer sent out to data
The circuit conveying energy penetrated；Crystal oscillator XO is active form, for generating stable low-frequency clock, and is timer TIM
Low-frequency reference clock CLKREF_LF is provided with frequency synthesizer FS；Frequency synthesizer FS is according to the reference clock of input
CLKREF_LF generate high frequency without skew clock CLKREF_HF, and be input in RADIO FREQUENCY SYNTHESIZER SYN and digital baseband DB；Energy
Regulator circuit has been measured built in administrative unit EM to ensure the stable voltage signal of energy storage units ES outputs, also to energy stores
Unit ES consults current energy storage state S, if S state becomes threshold value S from unknownL, then energy management unit EM controls
The unlatching of TIM and XO；And when storage state S is less than threshold value SLWhen, carry out the shutdown of timer TIM and crystal oscillator XO.
As shown in Fig. 2, the realization tool of energy collection circuit EC is there are three part, pre- rectifier filter Pre-FILTER is whole
Current circuit RECTIFIER and rear rectifier filter POST-FILTER.Pre- rectifier filter Pre-FILTER, that is, harmonics restraint filtering
Device, effect are the higher hamonic waves that the nonlinear characteristic of diode when inhibiting rectifier work generates, and harmonic energy rebound is made to arrive
The secondary rectification of rectifier；RF energy is efficiently converted to DC energy by rectification circuit RECTIFIER, mainly by Schottky rectification
Diode forms.Diode mode has the characteristic that high conversion efficiency, low insertion loss, size are small, are easily integrated in the design；
Energy after radio frequency rectifier, is largely being converted to DC energy, non-linear turn due to Schottky diode of fraction
It is changed to higher hamonic wave energy, also small part is the remaining fundamental frequency energy of rectification of diode.Rectifier filter POST- afterwards
FILTER is the bandstop filter of Dc Pass structures, and high-frequency signal is isolated with load paths.The master of rectifier filter afterwards
It is to filter out the higher hamonic wave generated when big signal carrier generator works to want function, improves the signal-to-noise ratio of modulated signal.
Frequency synthesizer FS according to the reference clock of input generate high frequency without skew clock CLKREF_HF, and be input to
In RADIO FREQUENCY SYNTHESIZER SYN and digital baseband DB.The structure of frequency synthesizer FS is usually phase-locked loop pll or digital phase-locked loop
DLL.Externally input signal according to communication protocol encode by digital baseband DB.RADIO FREQUENCY SYNTHESIZER SYN is contained
One frequency mixer, the signal after coding to be modulated, fundamental frequency is generated by FS.Frequency synthesizer FS, RADIO FREQUENCY SYNTHESIZER
SYN and digital baseband DB can be realized by discrete component, can also carry out organic assembling, be carried out in independent SOC chip whole
It closes.After being improved using the design method of low-power consumption, energy consumption is still higher with respect to TIM and XO, it would be desirable to be able to which figureofmerit S reaches higher threshold
Value SHIt can just work normally.
As shown in figure 3, a kind of implementation method of the single antenna passive data emission system based on timeslice poll, including with
Lower step：
S1：Antenna ANT sustainedly and stably collects energy to energy collection unit EC from the external world, and stores and arrive energy stores list
In first ES, and energy management unit EM tracking current energy levels S；
S2：When energy level S reaches threshold value SLWhen, timer TIM and crystal oscillator XO are opened；
S3：Timer TIM carries out the poll of energy level S according to timeslice T, when energy level S meets relationship SL<S<SH
When, return to step S3；When energy level S meets S>SHWhen, enter step S4；
S4：Frequency synthesizer FS, RADIO FREQUENCY SYNTHESIZER SYN, digital baseband DB start to work, and antenna ANT stops collection of energy,
Antenna ANT enters data transmitting mode；Energy level S is persistently reduced as data are sent, and energy level S meets S at this timeL<S
<SH, return to step S3；
S5：If energy input is interrupted or exception, energy level S are reduced to threshold value SLHereinafter, then timer TIM and crystal
Oscillator XO power-off.
The present invention sustainedly and stably collects energy from the external world using antenna ANT and is deposited to energy collection unit EC, and in energy
It is stored in storage ES, energy management EM tracking current energy levels S；Reach lower threshold SLWhen, opening timing device TIM and crystalline substance
Oscillation body device XO；Timer TIM stores horizontal S every time T under relatively low running frequency to EM poll present energies；Work as arrival
Higher thresholds SHWhen, TIM sends control signal PSO, open frequency synthesizer FS, digital baseband DB and RADIO FREQUENCY SYNTHESIZER to ES
SYN, data DATA are encoded by DB, and SYN is modulated, and are sent to antenna ANT, complete the transmission of data packet, Zhi Houneng
The amount horizontal S of storage will be reduced to SHBelow；TIM sends PSO signal-off according to time T poll energy storage levels S, to ES
Frequency synthesizer FS, digital baseband DB and RADIO FREQUENCY SYNTHESIZER SYN；Later according to above-mentioned logic loops；If energy input is interrupted, energy
The horizontal S of amount is reduced to threshold value SLHereinafter, then TIM and XO are automatically powered off.
The same or similar label correspond to the same or similar components；
Position relationship described in attached drawing is used to only for illustration, should not be understood as the limitation to this patent；
Obviously, the above embodiment of the present invention be only to clearly illustrate example of the present invention, and not be pair
The restriction of embodiments of the present invention.For those of ordinary skill in the art, may be used also on the basis of the above description
To make other variations or changes in different ways.There is no necessity and possibility to exhaust all the enbodiments.It is all this
All any modification, equivalent and improvement etc., should be included in the claims in the present invention made by within the spirit and principle of invention
Protection domain within.
Claims (6)
1. a kind of single antenna passive data emission system based on timeslice poll, which is characterized in that including antenna ANT, energy
Collector unit EC, energy management unit EM, energy storage units ES, timer TIM, crystal oscillator XO, frequency synthesizer FS,
RADIO FREQUENCY SYNTHESIZER SYN, digital baseband DB；The aerial array ANT is connect with energy collection unit EC, and energy collection unit EC is also
It is connect respectively with energy management unit EM and energy storage units ES, energy management unit EM is also connect with timer TIM, timing
Device TIM is also connect with crystal oscillator XO and energy storage units ES respectively, and crystal oscillator XO also connects with frequency synthesizer FS
Connect, frequency synthesizer FS is also connect with RADIO FREQUENCY SYNTHESIZER SYN and digital baseband DB respectively, digital baseband DB also with RADIO FREQUENCY SYNTHESIZER
SYN connections, RADIO FREQUENCY SYNTHESIZER SYN are also connect with antenna ANT；Energy storage units ES to timer TIM, crystal oscillator XO,
Frequency synthesizer FS, RADIO FREQUENCY SYNTHESIZER SYN and digital baseband DB system capacities.
2. the single antenna passive data emission system according to claim 1 based on timeslice poll, which is characterized in that institute
State enable signal PSO controls of the energy storage units ES by timer TIM；When PSO is to close, ES is no longer to the electricity of data transmitting
Road conveys energy.
3. the single antenna passive data emission system according to claim 2 based on timeslice poll, which is characterized in that institute
It is active form to state crystal oscillator XO, is carried for generating stable low-frequency clock, and for timer TIM and frequency synthesizer FS
For low-frequency reference clock CLKREF_LF.
4. the single antenna passive data emission system according to claim 3 based on timeslice poll, which is characterized in that frequency
Rate synthesizer FS according to the reference clock CLKREF_LF of input generate high frequency without skew clock CLKREF_HF, and be input to and penetrate
In frequency synthesizer SYN and digital baseband DB.
5. the single antenna passive data emission system according to claim 4 based on timeslice poll, which is characterized in that energy
Regulator circuit has been measured built in administrative unit EM to ensure the stable voltage signal of energy storage units ES outputs, also to energy stores
Unit ES consults current energy storage state S, if S state becomes threshold value S from unknownL, then energy management unit EM controls
The unlatching of TIM and XO；And when storage state S is less than threshold value SLWhen, carry out the shutdown of timer TIM and crystal oscillator XO.
6. a kind of implementation method of the single antenna passive data emission system based on timeslice poll as claimed in claim 5,
It is characterized by comprising the following steps：
S1：Antenna ANT sustainedly and stably collects energy to energy collection unit EC from the external world, and stores and arrive energy storage units ES
In, and energy management unit EM tracking current energy levels S；
S2：When energy level S reaches threshold value SLWhen, timer TIM and crystal oscillator XO are opened；
S3：Timer TIM carries out the poll of energy level S according to timeslice T, when energy level S meets relationship SL<S<SHWhen, it returns
Return step S3；When energy level S meets S>SHWhen, enter step S4；
S4：Frequency synthesizer FS, RADIO FREQUENCY SYNTHESIZER SYN, digital baseband DB start to work, and antenna ANT stops collection of energy, antenna
ANT enters data transmitting mode；Energy level S is persistently reduced as data are sent, and energy level S meets S at this timeL<S<SH,
Return to step S3；
S5：If energy input is interrupted or exception, energy level S are reduced to threshold value SLHereinafter, then timer TIM and crystal oscillation
Device XO power-off.
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| US20150380973A1 (en) * | 2014-06-30 | 2015-12-31 | Landis+Gyr Innovations, Inc. | RF Energy Harvesting by a Network Node |
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| US8552597B2 (en) * | 2006-03-31 | 2013-10-08 | Siemens Corporation | Passive RF energy harvesting scheme for wireless sensor |
| CN102859566A (en) * | 2010-04-19 | 2013-01-02 | 西门子公司 | Wireless control device |
| CN104769766A (en) * | 2012-02-17 | 2015-07-08 | 弗吉尼亚大学专利基金会以弗吉尼亚大学许可＆合资集团名义经营 | Energy harvesting and control for sensor node |
| CN105122246A (en) * | 2012-08-30 | 2015-12-02 | 弗吉尼亚大学专利基金会以弗吉尼亚大学许可＆合资集团名义经营 | Ultra low power sensing platform with multimodal radios |
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