CN106340173A - Self-energized wireless sensing technology and wireless sensing system thereof - Google Patents
Self-energized wireless sensing technology and wireless sensing system thereof Download PDFInfo
- Publication number
- CN106340173A CN106340173A CN201610853515.5A CN201610853515A CN106340173A CN 106340173 A CN106340173 A CN 106340173A CN 201610853515 A CN201610853515 A CN 201610853515A CN 106340173 A CN106340173 A CN 106340173A
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- Prior art keywords
- signal
- radio wave
- circuit
- wake
- wireless
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Classifications
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- G—PHYSICS
- G08—SIGNALLING
- G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
- G08C17/00—Arrangements for transmitting signals characterised by the use of a wireless electrical link
- G08C17/02—Arrangements for transmitting signals characterised by the use of a wireless electrical link using a radio link
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W84/00—Network topologies
- H04W84/18—Self-organising networks, e.g. ad-hoc networks or sensor networks
-
- 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 invention discloses a self-energized wireless sensing technology, which comprises the following steps: dividing reflecting and receiving wireless waves into two parts to transmit; performing accepting processing analysis on the first part of wireless waves to obtain and transmit a wake-up signal; demodulating the second part of wireless waves respectively to obtain a read/write command, and performing mixing and difference frequency modulation on the reflecting wireless waves to obtain a modulation signal; reading sensing information in a sensor or a memorizer according to the wake-up signal and the read/write command; modulating the sensing information to the reflected wireless wave modulation signal to obtain and transmit a node signal. A wireless sensing system comprises a transmitting and receiving antenna containing the reflecting wireless waves, a first processing module, a second processing module, a digital logic circuit and a transmitting and receiving switch. The self-energized wireless sensing technology and the wireless sensing system thereof, which are provided by the invention, have the characteristics of small size, low power consumption, wide application range, no need of batteries, capability of supplying energy continuously and stably and the like.
Description
Technical field
The present invention relates to wireless sensor technology field is and in particular to a kind of self energizing wireless sensor technology and its wireless sensing
System.
Background technology
At present, ubiquitous Sensor Network sets up and faces more difficulty and challenge, and because network node is more, is unsuitable for spreading
If circuit, therefore, typically it is equipped with the mode of battery frequently with low consumption circuit；However, so though the long period can be used, but still
So there is a problem of that the energy is not lasting, battery is installed simultaneously and can make that individual node volume is larger, cost is difficult to control to；Cause
This, design a kind of small volume, applied range, without battery and be capable of the wireless sensing system of continual and steady energy supply and become increasingly
Research emphasis.
Content of the invention
The self energizing wireless sensor technology providing for above-mentioned deficiency of the prior art, the present invention and its wireless sensing system
System have small volume, applied range, without battery and can continually and steadily energy supply the features such as.
In order to reach foregoing invention purpose, the technical solution used in the present invention is: provides a kind of self energizing wireless sensing skill
Art, it comprises the following steps:
S1: reflection, receive radio wave, and be classified as two parts and be transmitted；
S2: Treatment Analysis are carried out to Part I radio wave, obtains and send wake-up signal；
S3: Part II radio wave is demodulated respectively, obtains read write command, and mixing, difference frequency modulation, obtain containing modulation
The transmitting radio wave of signal；
S4: read the heat transfer agent in sensor according to wake-up signal and read write command；
S5: heat transfer agent is modulated in the modulated signal of transmitting radio wave, obtains node signal；
S6: transmitting node signal.
Further, radio wave is received by dual-mode antenna and reflects.
Further, Treatment Analysis are to carry out rectification to radio wave, obtain DC voltage, and by DC voltage and make a reservation for
Threshold values is compared；If DC voltage exceedes predetermined threshold, send wake-up signal.
Further, the backscatter being emitted through dual-mode antenna of node signal is realized.
Further, radio wave includes one or more of wifi, bluetooth, zigbee, radio frequency and microwave.
A kind of wireless sensing system, it includes dual-mode antenna, for receiving and dispatching and reflecting radio wave；First processing module,
Treatment Analysis are carried out to radio wave, obtains and send wake-up signal；Second processing module, solves respectively to radio wave
Adjust, obtain read write command, and mixing, difference frequency modulation, obtain the transmitting radio wave containing modulated signal；
Digital Logical Circuits, are connected with first processing module, Second processing module and at least one sensor, respectively according to wake-up
Heat transfer agent in signal and read write command reading sensor, and transducing signal is modulated the modulated signal of transmitting radio wave
On, obtain node signal；Transmit-receive switch, is connected with dual-mode antenna, Digital Logical Circuits and earth terminal respectively, for switching transmitting-receiving
The reiving/transmitting state of antenna.
Further, first processing module includes radio frequency capture circuit, rectification circuit and the wake-up circuit being sequentially connected；Its
In, be stored with wake-up circuit reservation threshold, by wake-up circuit by the DC voltage being gone out by rectifier circuit rectifies and predetermined valve
Value is compared；If DC voltage exceedes predetermined threshold, send wake-up signal to Digital Logical Circuits, drive Digital Logic electricity
Road starts.
Further, Second processing module includes receptor, demodulator circuit, ad change-over circuit and frequency mixer；Receptor divides
Be not connected with demodulator circuit and frequency mixer, demodulator circuit is connected with ad change-over circuit, ad change-over circuit series connection with frequency mixer all with
Digital Logical Circuits connect.
Further, receptor and the connection line of demodulator circuit and frequency mixer are disposed with filter and amplification electricity
Road.
Further, radio wave is wifi.
The invention has the benefit that this self energizing wireless sensor technology and its wireless sensing system are carried out to radio wave
Step-by-step processing, a portion is used for energy supply, and another part is used for communicating, and then make sensor battery etc. can not had attached
Work in the case of powering up, applied range, efficiently reduce the volume of individual node, power consumption is low, solves due to energy
Led to series of problems can not be persistently supplied in source；And the non-linear modulation such as mixing, difference frequency have been carried out to radio wave, can
Form reliable and stable frequency needed for receiving device it is ensured that communicate is efficient.
Brief description
Accompanying drawing described herein is used for providing further understanding of the present application, constitutes the part of the application, at this
Represent same or analogous part, the schematic description and description of the application using identical reference number in a little accompanying drawings
For explaining the application, do not constitute the improper restriction to the application.
Fig. 1 is the structural representation of wireless sensing system.
Specific embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation describes it is clear that described embodiment is only an embodiment of the present invention, rather than whole embodiments.Based on this
Embodiment in invention, the every other reality that those of ordinary skill in the art are obtained under the premise of not making creative work
Apply example, broadly fall into protection scope of the present invention.
For the sake of simplicity, eliminate the technology general knowledge well known to this technical field technical staff in herein below.
As shown in figure 1, this self energizing wireless sensor technology specifically includes following steps:
S1: reflection, receive radio wave, and be classified as two parts and be transmitted；A portion is used for energy supply, another portion
Divide and be used for communicating, and then sensor is worked in the case of not having the additional supplies such as battery, efficiently reduce list
The volume of individual node, solves and can not persistently supply led to series of problems by the energy；In being embodied as, radio
Ripple is received by dual-mode antenna, can reflect simultaneously and receive multi-frequency radio wave, dual-mode antenna obtains from radio wave
A small amount of energy with drive system entire run.
Radio wave includes one or more of wifi, bluetooth, zigbee, radio frequency and microwave it is also possible to simultaneously multiple
Frequency range, such as radiofrequency signal energy supply, wifi signal communication；In the modern life, radio wave has been full of with us, and
Day and night, the impact of blowing and raining etc. will not be subject to, ensure that the steady of energy supply by the use of radio wave as drive energy
Fixed and continuous.
S2: Treatment Analysis are carried out to Part I radio wave, obtains and send wake-up signal；Waken up by wake-up signal
The circuit being attached thereto is driven to be operated, in being embodied as, the process of Treatment Analysis is to carry out rectification to radio wave,
Obtain DC voltage, and DC voltage is compared with reservation threshold；If DC voltage exceedes predetermined threshold, send and wake up
Signal.
In practical operation, rectification can be carried out to multiple radio waves, obtain corresponding to different DC voltages, and will be straight
Stream voltage is compared with the reservation threshold of multiple radio waves；If DC voltage exceedes reservation threshold, send and call out accordingly
Awake signal.
S3: Part II radio wave is demodulated respectively, obtains read write command, and mixing, difference frequency modulation, contained
The transmitting radio wave of modulated signal；In being embodied as, the non-linear modulation such as mixing, difference frequency is passed through in radio wave, being capable of shape
Become reliable and stable frequency needed for receiving device it is ensured that communicate is efficient.
S4: read the heat transfer agent in sensor according to wake-up signal and read write command, fast and effeciently from sensor
Obtain the information needed for people.
S5: heat transfer agent is modulated in the modulated signal of transmitting radio wave, obtains node signal；It is being embodied as
In, the node signal after modulation can demodulate and obtain the data of this node in other radio receivers, realizes signal
Communication.
S6: transmitting node signal, in being embodied as, the backscatter reality being emitted through dual-mode antenna of node signal
Existing, greatly reduce the energy consumption of circuit；In practical operation, it is possible to use other low energy-consumption electronic devices communicate, such as using low work(
Consumption led feedback information in the form of optical signal.
A kind of wireless sensing system based on above-mentioned self energizing wireless sensor technology, it includes dual-mode antenna, for receiving and dispatching
With reflection radio wave, in being embodied as, it can be received and dispatched and reflect the radio wave of multi-frequency；First processing module is right
Radio wave carries out Treatment Analysis, obtains and sends wake-up signal；Second processing module, is demodulated respectively to radio wave,
Obtain read write command, and mixing, difference frequency modulation, obtain the transmitting radio wave containing modulated signal；
Digital Logical Circuits, are connected with first processing module, Second processing module and at least one sensor, respectively according to wake-up
Heat transfer agent in signal and read write command reading sensor, and transducing signal is modulated the modulated signal of transmitting radio wave
On, obtain node signal；Transmit-receive switch, is connected with dual-mode antenna, Digital Logical Circuits and earth terminal respectively, for switching transmitting-receiving
The reiving/transmitting state of antenna.
In being embodied as, in reception radio wave, and when radio wave is processed, transmit-receive switch is in ground connection shape
State；After in the modulated signal that transducing signal is modulated transmitting radio wave, Digital Logical Circuits send control information to receipts
Send out switch, switch transmit-receive switch, so that transmit-receive switch is connected with Digital Logical Circuits so that dual-mode antenna is in emission state, use
In transmitting node signal.
This wireless sensing system has carried out step-by-step processing to radio wave, and a portion is used for energy supply, and another part is used
In communication, and then sensor is worked in the case of not having the additional supplies such as battery, applied range, effectively subtract
The little volume of individual node, solves and can not persistently supply led to series of problems by the energy；And to radio wave
Carried out the non-linear modulation such as mixing, difference frequency, frequency needed for reliable and stable receiving device can be formed it is ensured that communication height
Effect.
First processing module includes radio frequency capture circuit, rectification circuit and the wake-up circuit being sequentially connected；Wherein, wake up electricity
Be stored with road reservation threshold, is compared the DC voltage being gone out by rectifier circuit rectifies and reservation threshold by wake-up circuit
Relatively；If DC voltage exceedes predetermined threshold, send wake-up signal to Digital Logical Circuits, drive Digital Logical Circuits to start；
If DC voltage is less than predetermined threshold, Digital Logical Circuits continue to keep off position to save electric energy.
Second processing module includes receptor, demodulator circuit, ad change-over circuit and frequency mixer；Receptor is electric with demodulation respectively
Road and frequency mixer connect, and demodulator circuit is connected with ad change-over circuit, and the series connection of ad change-over circuit and frequency mixer are all electric with Digital Logic
Road connects.
In being embodied as, receptor and the connection line of demodulator circuit and frequency mixer are disposed with filter and put
Big circuit, is filtered to radio wave and processing and amplifying, it is to avoid the interference of noise signal is it is ensured that having of node communication
Effect.
The radio wave of this wireless sensing system is wifi, in being embodied as, and is supplied by the use of wifi signal as communication
The radio wave of energy, is not only readily available acquisition, can carry out network connection with existing equipment simultaneously, be suitable in city
For laying ubiquitous Sensor Network.
In being embodied as, after dual-mode antenna receives wifi signal, a part of wifi signal is through first processing module
In radio frequency capture circuit obtain, and rectification carried out by rectification circuit obtain DC voltage, then by wake-up circuit ratio
Compared with this DC voltage, if this DC voltage exceedes predetermined threshold, that is, wake up Digital Logical Circuits, and start working；Otherwise, numeral
Logic circuit continues to keep off position to save electric energy.
The received device of another part wifi signal receives, and is filtered and processing and amplifying by wave filter and amplifying circuit；
By demodulator circuit and ad change-over circuit, wifi signal is demodulated again and ad conversion, the read-write obtaining in wifi signal refers to
Order, and the signal processing that will carry out including data storage in incoming for this read write command Digital Logical Circuits, read sensor etc..
Filtered and after processing and amplifying wifi signal passes through frequency mixer, is mixed, the non-linear modulation such as difference frequency, is formed
The modulated signal of frequency needed for receiving device, and pass through Digital Logical Circuits, and transducing signal is modulated transmitting radio wave
Modulated signal on, obtain node signal；Now, Digital Logical Circuits send control information to transmit-receive switch, switch transmitting-receiving and open
Close, so that transmit-receive switch is connected with Digital Logical Circuits so that dual-mode antenna is in emission state, transmitting node signal.
Described above to the disclosed embodiments, makes professional and technical personnel in the field be capable of or uses the present invention.
Multiple modifications to these embodiments will make it will be apparent that defined herein one for those skilled in the art
As principle can without departing from invention spirit or scope in the case of, realize in other embodiments.Therefore, the present invention will not
Can be limited and the embodiments shown herein, and be to fit to consistent with principles disclosed herein and novel features
Scope the widest.
Claims (10)
1. a kind of self energizing wireless sensor technology, is characterised by, including
S1: reflection, receive radio wave, and be classified as two parts and be transmitted；
S2: Treatment Analysis are carried out to radio wave described in Part I, obtains and send wake-up signal；
S3: radio wave described in Part II is demodulated respectively, obtains read write command, and mixing, difference frequency modulation, contained
The transmitting radio wave of modulated signal；
S4: read the heat transfer agent in sensor according to described wake-up signal and read write command；
S5: described heat transfer agent is modulated in the modulated signal of described transmitting radio wave, obtains node signal；
S6: launch described node signal.
2. self energizing wireless sensor technology according to claim 1 it is characterised in that: described radio wave pass through receive and dispatch sky
Line receives and reflects.
3. self energizing wireless sensor technology according to claim 1 it is characterised in that: described Treatment Analysis are to described nothing
Line electric wave carries out rectification, obtains DC voltage, and described DC voltage and reservation threshold are compared；If described DC voltage
Exceed predetermined threshold, then send wake-up signal.
4. self energizing wireless sensor technology according to claim 1 it is characterised in that: being emitted through of described node signal
The backscatter of dual-mode antenna is realized.
5. self energizing wireless sensor technology according to claim 1 it is characterised in that: described radio wave include wifi,
One or more of bluetooth, zigbee, radio frequency and microwave.
6. a kind of wireless sensing system based on the self energizing wireless sensor technology described in any one of claim 1 ~ 5, its feature
It is, comprising:
Dual-mode antenna, for receiving and dispatching and reflecting radio wave；
First processing module, carries out Treatment Analysis to described radio wave, obtains and sends wake-up signal；
Second processing module, is demodulated respectively to described radio wave, obtains read write command, and mixing, difference frequency modulation, obtains
Transmitting radio wave containing modulated signal；
Digital Logical Circuits, are connected with described first processing module, Second processing module and at least one sensor respectively；According to
Heat transfer agent in described wake-up signal and read write command reading sensor, and described transducing signal is modulated described transmitting no
In the modulated signal of line electric wave, obtain node signal；
Transmit-receive switch, is connected with described dual-mode antenna, Digital Logical Circuits and earth terminal respectively, for switching described dual-mode antenna
Reiving/transmitting state.
7. wireless sensing system according to claim 6 it is characterised in that: described first processing module includes being sequentially connected
Radio frequency capture circuit, rectification circuit and wake-up circuit；Wherein, be stored with wake-up circuit reservation threshold, by wake-up circuit
The DC voltage being gone out by rectifier circuit rectifies and reservation threshold are compared；If described DC voltage exceedes predetermined threshold,
Send wake-up signal to described Digital Logical Circuits, drive described Digital Logical Circuits to start.
8. wireless sensing system according to claim 6 it is characterised in that: described Second processing module include receptor,
Demodulator circuit, ad change-over circuit and frequency mixer；Described receptor is connected with described demodulator circuit and frequency mixer respectively, described demodulation
Circuit is connected with described ad change-over circuit, and described ad change-over circuit series connection and described frequency mixer are all with described Digital Logical Circuits even
Connect.
9. wireless sensing system according to claim 8 it is characterised in that: described receptor and described demodulator circuit and mix
Filter and amplifying circuit are disposed with the connection line of frequency device.
10. wireless sensing system according to claim 6 it is characterised in that: described radio wave be wifi.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201610853515.5A CN106340173A (en) | 2016-09-27 | 2016-09-27 | Self-energized wireless sensing technology and wireless sensing system thereof |
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| CN201610853515.5A CN106340173A (en) | 2016-09-27 | 2016-09-27 | Self-energized wireless sensing technology and wireless sensing system thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109567808A (en) * | 2018-11-29 | 2019-04-05 | 电子科技大学 | Self energizing tidal air sensor array and preparation method thereof |
| CN113096408A (en) * | 2021-04-02 | 2021-07-09 | 电子科技大学 | License plate recognition system based on self-energy supply |
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| CN109567808B (en) * | 2018-11-29 | 2021-07-09 | 电子科技大学 | Self-powered respiratory gas sensor array and preparation method thereof |
| CN113096408A (en) * | 2021-04-02 | 2021-07-09 | 电子科技大学 | License plate recognition system based on self-energy supply |
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Application publication date: 20170118 |