CN108649833B - Self-powered friction nanometer power generator wireless sensing emission system with identity information - Google Patents
Self-powered friction nanometer power generator wireless sensing emission system with identity information Download PDFInfo
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- CN108649833B CN108649833B CN201810463536.5A CN201810463536A CN108649833B CN 108649833 B CN108649833 B CN 108649833B CN 201810463536 A CN201810463536 A CN 201810463536A CN 108649833 B CN108649833 B CN 108649833B
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- nanometer power
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02N—ELECTRIC MACHINES NOT OTHERWISE PROVIDED FOR
- H02N1/00—Electrostatic generators or motors using a solid moving electrostatic charge carrier
- H02N1/04—Friction generators
-
- 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
- H02J50/10—Circuit arrangements or systems for wireless supply or distribution of electric power using inductive coupling
- H02J50/12—Circuit arrangements or systems for wireless supply or distribution of electric power using inductive coupling of the resonant type
-
- 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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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Power Engineering (AREA)
- Arrangements For Transmission Of Measured Signals (AREA)
Abstract
The invention discloses the self-powered friction nanometer power generator wireless sensing emission systems for having identity information.The wireless sensing and emission system of existing friction nanometer power generator need external active circuit to charge, and are not the self-powered sensing emission systems of real meaning.The present invention includes the friction nanometer power generator with mechanical switch structure and radio frequency identification signal generates and transmit circuit；Friction nanometer power generator with mechanical switch structure generates transducing signal, is generated by radio frequency identification signal and transmit circuit is without launching included radio frequency identification information in the case where external power supply.In external parameter to be measured variation, the amplitude for the laser signal that wireless receiving arrives changes the present invention, but the resonance frequency of laser signal that wireless receiving arrives is constant, and radio frequency identification information is stablized, and erroneous judgement will not be generated.
Description
Technical field
The invention belongs to friction nanometer power generator sensor technical fields, and in particular to a kind of confession with identity information
Electric friction nanometer power generator wireless sensing emission system.
Background technique
Currently, sensor network technique obtains significant progress, it is applied to all trades and professions；Sensor network or Internet of Things
The basis of net and core.Number of sensors for sensor network and Internet of Things is huge, and with control and information processing system
It is cumbersome with the connection complexity of equipment；And be these flood tide standalone sensors energy supply be a urgent problem to be solved.Traditional electricity
Pool technology is since its is at high cost, a large amount of manpowers is needed the disadvantages of maintenance, to be difficult to meet the application of flood tide sensor.It solves
One of sensor network energy supply most promising method of problem is exactly to use self energizing device or energy harvester.The nanometer that rubs hair
Motor (Triboelectric Nanogenerator, TENG), can be with as the output highest self energizing device of electric signal power
By converting electric energy for the mechanical energy (raindrop drippage, wind and vibration etc.) for being difficult to collect of environment where sensor,
For solving the problems, such as the energy supply of sensor network.Other than being powered as energy source to sensor using TENG, the electric energy of TENG
Output size is also related with friction condition (friction contact load, frequency etc.) and environmental condition (temperature, humidity and air pressure etc.), so
Self energizing sensor can also be become, sensor network is directly applied to by the way that TENG is designed to different sensing arrangements
Middle substitution traditional sensors carry out the physical quantitys such as sensed pressure (power), collision, vibration, stress (strain), displacement, humidity and temperature.
In order to solve the powerup issue of sensor network and wearable device, the friction nanometer of inexpensive and high power output
Generator is widely studied.United States Patent (USP) US20140084748A1 " Triboelectric disclosed on March 27th, 2014
Nanogenerator for powering portable electronics " has been put forward for the first time one kind and has set for wearable
The friction nanometer power generator structure of available electricity.
Since wireless sensing transmitting needs large energy, in the case where not using management circuit, directly utilize
It is generally relatively difficult to achieve that TENG carries out wireless real-time sensing.Simultaneously because the output impedance of TENG is very big, Gang Cheng et al.
Article " the Pulsed Nanogenerator withHuge Instantaneous Output that on June 24th, 2013 delivers
Power Density " proposes a kind of method for improving the output of TENG moment electric signal using mechanical switch structure, maximum instantaneous
Current density and output power density are respectively up to 104A/m2With 3.6 × 105W/m2.In addition, the input impedance due to TENG is high
Up to tens Dao several hundred megohms, and the input impedance of general circuit is lower, so that it can not be matched with back-end circuit impedance, causes
The decaying of electric signal reality output is huge.Article " the Using a that PareshVasandani et al. was delivered on the 23rd in September in 2017
synchronous switch to enhance output performance of triboelectric
A kind of structure of synchronous switch is utilized in nanogenerators ", and the input impedance of TENG is reduced to from a megohm magnitude
Ohm allows TENG to be effectively matched and connect with back-end circuit to tens ohm levels.
In addition, possessing a large amount of access sensor in sensor network, since the output signal of TENG carries information content not
It is enough, it cannot be distinguished from out the source of difference TENG sensor signal in sensor network, limit TENG in sensor network
Using.
Summary of the invention
The self-powered friction nanometer with identity information that in view of the deficiencies of the prior art, it is an object of the present invention to provide a kind of
Generator wireless sensing emission system.
The present invention includes the friction nanometer power generator with mechanical switch structure and radio frequency identification signal generates and transmitting
Circuit.It includes that capacitor C, resistance R, transformer T and wireless signal produce that the radio frequency identification signal, which is generated with transmit circuit,
Raw device；Input coil one end of transformer T is connect with the one end capacitor C, and the other end is connect with the one end resistance R, the capacitor C other end with
The connection of the resistance R other end；The output winding both ends of transformer T are separately connected with wireless signal generator both ends；Band mechanical switch
The voltage signal output end of the friction nanometer power generator of structure is connected to the both ends capacitor C；Capacitor C, resistance R and the transformer
Input coil and output winding in T form rlc circuit.
The voltage signal of friction nanometer power generator output with mechanical switch structure generates resonance signal in rlc circuit,
Resonance signal is input in wireless signal generator by transformer T, makes wireless signal generator under the driving of resonance signal
Flashing, transmitting laser signal or electromagnetic signals, flicker frequency, laser signal frequency or electromagnetic wave signal frequency are used as and penetrate
Frequency identification signals generate the resonance frequency with resonance signal in transmit circuit, and the resonance frequency of the resonance signal is band machine
The radio frequency identification information of the friction nanometer power generator output voltage signal of tool construction of switch.
Preferably, the Standard resistance range of the resistance is at 0 ohm to 1000 ohm.
Preferably, the inductance value range of the input coil and output winding is 1 microhenry to 100 milihenries.
Preferably, the capacitance value range of the capacitor is 0 method to 10 microfarads.
Lead to preferably, the radio frequency identification signal is generated with resonance signal resonance frequency caused by transmit circuit
Cross capacitor C, the input coil in transformer T or output winding inductance one of them variation or their combination variation come
Control.
Preferably, the input coil of the transformer and the turn ratio of output winding are 1:1.
Preferably, the wireless signal generator is light emitting diode or laser diode；
Preferably, the wireless signal generator is two induction coils, two resonance type coils, resonator or micro-
Band antenna；When wireless signal generator is two induction coils or two resonance type coils, one of induction coil or resonance
The output winding both ends of transformer, another induction coil or resonance type coil are accessed as output in type coil both ends；Wireless communication
When number generator is resonator or microstrip antenna, the output winding two of the input terminal access transformer of resonator or microstrip antenna
End；Two induction coils, two resonance type coils, resonator or microstrip antenna electromagnetic signals.
Preferably, the friction nanometer power generator with mechanical switch structure be detection pressure, vibration, stress, strain,
It is displaced, the friction nano-sensor with mechanical switch structure of humidity or temperature.
The invention has the benefit that
It is mostly based on the wireless sensing and emission system of friction nanometer power generator at this stage, requires the energy of external active
Buret manage circuit charge the battery with subsequent electricity consumption, make it not and be self-powered sensing transmitting system truly
System.The present invention can be in the case where being not necessarily to the energy management circuit and battery of external active, parameter to be measured outside real-time response
The excitation of (such as pressure, vibration etc.), at least 3 meters of optical signal, laser signal or electromagnetic wave signal can be propagated by launching.Separately
Outside, traditional wireless sensing and emission system based on friction nanometer power generator, the wireless signal of transmitting is without identification
Information, and the present invention by without power supply identity identification information generation circuit to come come with mechanical switch friction nanometer send out
The voltage signal of motor is modulated, and makes it with different identity labels, is quite suitable for setting up really self-powered be based on
The wireless sensor network of friction nanometer power generator.The present invention is in external parameter to be measured variation, laser signal that wireless receiving arrives
Resonance frequency it is constant, radio frequency identification information stablize, erroneous judgement will not be generated.The capacitance that the present invention passes through change capacitor C
Come change rlc circuit resonance frequency (and in the case that input coil in transformer T and output winding inductance are constant, capacitor C
After determination, the resonance frequency of the rlc circuit is exactly fixed), or by changing input coil or output line in transformer T
Inductance is enclosed to change the resonance frequency of rlc circuit, or the combination by input coil and output winding inductance in transformer T
Change to change the resonance frequency of rlc circuit, achievees the purpose that obtain different radio frequency identification signals.The present invention can be used for
Production technology, the wireless and passive detection and monitoring of equipment, automatic starting device caused by pressure, displacement etc., entrance personnel counting,
Battlefield monitoring, it is antitheft etc..
Detailed description of the invention
Fig. 1 is that the embodiment of the present invention generates in radio frequency identification signal and uses laser diode conduct in transmit circuit
Circuit theory schematic diagram when wireless signal emission source.
It is 0 that Fig. 2 (a), Fig. 2 (b), Fig. 2 (c), Fig. 2 (d), Fig. 2 (e), which are the embodiment of the present invention respectively in the capacitance of capacitor,
Radio frequency identification signal generates the band with transmit circuit transmitting when pico farad, 112 pico farads, 195 pico farads, 336 pico farads and 451 pico farad
There is the voltage tester time-domain diagram of the wireless sensing transmitting signal of different radio frequency identity identification information.
It is 0 pico farad, 112 pico farads, 195 pico farads, 336 pico farads, 451 skins that Fig. 3, which is the embodiment of the present invention in the capacitance of capacitor,
Radio frequency identification signal is generated when method sends out with the wireless sensing with different radio frequency identity identification information of transmit circuit transmitting
Penetrate the voltage tester frequency domain figure of signal.
Fig. 4 is friction nanometer power generator in the embodiment of the present invention with the mechanical switch structure radio frequency identity under different stress
Identification signal generates the voltage with the wireless sensing transmitting signal with different radio frequency identity identification information of transmit circuit transmitting
Test time-domain diagram.
Specific embodiment
In order to more specifically describe the present invention, technical solution of the present invention is carried out with reference to the accompanying drawings and embodiments detailed
It describes in detail bright.
Referring to Fig. 1, the self-powered friction nanometer power generator wireless sensing emission system with identity information, including band are mechanical
The friction nanometer power generator 1 and radio frequency identification signal of construction of switch generate and transmit circuit 2.Radio frequency identification signal produces
It is raw to include capacitor C, resistance R, transformer T and laser diode D with transmit circuit 2；Input coil one end of transformer T and capacitor
The connection of the one end C, the other end are connect with the one end resistance R, and the capacitor C other end is connect with the resistance R other end；The output line of transformer T
Circle both ends are separately connected with the both ends laser diode D；The voltage signal of friction nanometer power generator 1 with mechanical switch structure exports
End is connected to the both ends capacitor C.Radio frequency identification signal, which is generated, generates the substantially former of radio frequency identification signal with transmit circuit
Reason are as follows: capacitor C, resistance R and input coil and output winding composition rlc circuit in transformer T, rubbing with mechanical switch structure
It wipes the voltage signal (or transducing signal) that nano generator 1 exports and generates resonance signal in rlc circuit, resonance signal passes through
Transformer T is input in laser diode D, and laser diode D is made to generate flashing under the driving of resonance signal, and flicker frequency is made
The resonance frequency with resonance signal in transmit circuit is generated for radio frequency identification signal, the resonance frequency of the resonance signal is
The radio frequency identification information of 1 output voltage signal of friction nanometer power generator with mechanical switch structure.Band mechanical switch structure
Friction nanometer power generator be detect pressure, vibration, stress, strain, displacement, humidity or temperature rubbing with mechanical switch structure
Nano-sensor is wiped, different pressures, vibration, stress, strain, displacement, humidity or temperature change the friction with mechanical switch structure
The voltage signal magnitude of nano generator output, achievees the purpose that sensing.The present embodiment is changed by changing the capacitance of capacitor C
Becoming the resonance frequency of rlc circuit, (and in the case that input coil in transformer T and output winding inductance are constant, capacitor C is determined
Afterwards, the resonance frequency of the rlc circuit is exactly fixed), it also can choose by changing input coil or output in transformer T
Coil inductance changes the resonance frequency of rlc circuit, or the group by input coil and output winding inductance in transformer T
Variation is closed to change the resonance frequency of rlc circuit, achievees the purpose that obtain different radio frequency identification signals.
This example generates different radio frequency identification information by changing the capacitance of capacitor C, and wireless receiving is to (passing through
Wireless receiver receive) radio frequency identification signal generate with transmit circuit generate laser signal time-domain diagram such as Fig. 2 (a),
Shown in Fig. 2 (b), Fig. 2 (c), Fig. 2 (d) and Fig. 2 (e), horizontal axis represents time t, and the longitudinal axis represents the laser signal width that wireless receiving arrives
Value A.As it can be seen that the capacitance of capacitor C is bigger, the spacing between the harmonic wave peak and peak of laser signal is bigger.To Fig. 2 (a), figure
2 (b), the time domain waveform of Fig. 2 (c), Fig. 2 (d) and Fig. 2 (e) obtain Fig. 3 after carrying out Fast Fourier Transform, and Fig. 3 is in different electricity
Under the capacitance for holding C, the radio frequency identification signal that wireless receiving arrives generates the laser signal frequency domain figure generated with transmit circuit.
In Fig. 3, horizontal axis represents frequency F, and the longitudinal axis represents the normalization amplitude N for the laser signal that wireless receiving arrives.Analysis chart 3, electricity
The capacitance for holding C is bigger, and the resonance frequency of laser signal is smaller.
The friction nanometer power generator of this out tape mechanical switch structure is using the rubbing with mechanical switch structure for detecting pressure
When wiping nano-sensor, the voltage tester time-domain diagram of wireless sensing transmitting signal is as shown in figure 4, horizontal axis represents under different stress
Time t, the longitudinal axis represent the normalization amplitude N for the laser signal that wireless receiving arrives.Analysis chart 4, when driving is with mechanical switch
When the power of friction nanometer power generator 1 increases, the resonance frequency (radio frequency identification information) for the laser signal that wireless receiving arrives is no
Become, the amplitude for the laser signal that wireless receiving arrives increases.
Technical solution of the present invention and beneficial effect is described in detail in above-described specific embodiment, Ying Li
Solution is not intended to restrict the invention the foregoing is merely presently most preferred embodiment of the invention, all in principle model of the invention
Interior done any modification, supplementary, and equivalent replacement etc. are enclosed, should all be included in the protection scope of the present invention.
Claims (9)
1. having the self-powered friction nanometer power generator wireless sensing emission system of identity information, it is characterised in that: including band machine
The friction nanometer power generator and radio frequency identification signal of tool construction of switch generate and transmit circuit；The radio frequency identification
It includes capacitor C, resistance R, transformer T and wireless signal generator that signal, which is generated with transmit circuit,；The input coil one of transformer T
End is connect with the one end capacitor C, and the other end is connect with the one end resistance R, and the capacitor C other end is connect with the resistance R other end；Transformer T
Output winding both ends be separately connected with wireless signal generator both ends；The electricity of friction nanometer power generator with mechanical switch structure
Pressure signal output end is connected to the both ends capacitor C；Capacitor C, the resistance R and input coil and output winding in transformer T
Form rlc circuit；
The voltage signal of friction nanometer power generator output with mechanical switch structure generates resonance signal, resonance in rlc circuit
Signal is input in wireless signal generator by transformer T, flash wireless signal generator under the driving of resonance signal,
Emit laser signal or electromagnetic signals, flicker frequency, laser signal frequency or electromagnetic wave signal frequency are as radio frequency body
Part identification signal generates the resonance frequency with resonance signal in transmit circuit, and the resonance frequency of the resonance signal is that band machinery is opened
Close the radio frequency identification information of the friction nanometer power generator output voltage signal of structure.
2. the self-powered friction nanometer power generator wireless sensing emission system according to claim 1 with identity information,
It is characterized by: the Standard resistance range of the resistance is at 0 ohm to 1000 ohm.
3. the self-powered friction nanometer power generator wireless sensing emission system according to claim 1 with identity information,
It is characterized by: the inductance value range of the input coil and output winding is 1 microhenry to 100 milihenries.
4. the self-powered friction nanometer power generator wireless sensing emission system according to claim 1 with identity information,
It is characterized by: the capacitance value range of the capacitor is 0 method to 10 microfarads.
5. the self-powered friction nanometer power generator wireless sensing emission system according to claim 1 with identity information,
It is characterized by: the radio frequency identification signal, which is generated, passes through capacitor with resonance signal resonance frequency caused by transmit circuit
C, the input coil in transformer T or output winding inductance one of them variation or their combination change to control.
6. the self-powered friction nanometer power generator wireless sensing emission system according to claim 1 with identity information,
It is characterized by: the input coil of the transformer and the turn ratio of output winding are 1:1.
7. the self-powered friction nanometer power generator wireless sensing emission system according to claim 1 with identity information,
It is characterized by: the wireless signal generator is light emitting diode or laser diode.
8. the self-powered friction nanometer power generator wireless sensing emission system according to claim 1 with identity information,
It is characterized by: the wireless signal generator is two induction coils, two resonance type coils, resonator or micro-strip day
Line；When wireless signal generator is two induction coils or two resonance type coils, one of induction coil or resonance molded line
The output winding both ends of both ends access transformer are enclosed, another induction coil or resonance type coil are as output；Wireless signal produces
When raw device is resonator or microstrip antenna, the output winding both ends of the input terminal access transformer of resonator or microstrip antenna；Two
A induction coil, two resonance type coils, resonator or microstrip antenna electromagnetic signals.
9. the self-powered friction nanometer power generator wireless sensing emission system according to claim 1 with identity information,
It is characterized by: the friction nanometer power generator with mechanical switch structure be detection pressure, vibration, stress, strain, displacement,
The friction nano-sensor with mechanical switch structure of humidity or temperature.
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110365122B (en) * | 2019-06-03 | 2020-09-08 | 杭州电子科技大学 | Self-powered wireless sensing system based on friction nano generator |
| CN112669488B (en) * | 2020-11-26 | 2022-04-08 | 杭州电子科技大学 | Metal product counting and sorting method based on friction nano generator and LC sensing |
| CN113237496B (en) * | 2021-06-04 | 2023-05-23 | 重庆大学 | Active friction nano generator sensor with pre-processing circuit |
| CN113938050A (en) * | 2021-09-13 | 2022-01-14 | 浙江大学 | High-sensitivity instantaneous self-powered wireless sensing system of friction nano generator |
| CN114674348B (en) * | 2022-04-19 | 2024-04-12 | 杭州电子科技大学 | Amplitude and frequency double-parameter sensing decoupling system based on friction nano generator |
| CN115305769A (en) * | 2022-08-19 | 2022-11-08 | 北京化工大学 | Runway surface layer, energy storage runway, intelligent runway and motion data monitoring method |
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