CN113037129A - Friction nanometer generator and self-driven intelligent velocimeter based on same - Google Patents
Friction nanometer generator and self-driven intelligent velocimeter based on same Download PDFInfo
- Publication number
- CN113037129A CN113037129A CN202110487727.7A CN202110487727A CN113037129A CN 113037129 A CN113037129 A CN 113037129A CN 202110487727 A CN202110487727 A CN 202110487727A CN 113037129 A CN113037129 A CN 113037129A
- Authority
- CN
- China
- Prior art keywords
- module
- energy
- voltage
- signal
- velocimeter
- 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
Images
Classifications
-
- 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
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
- G01P5/00—Measuring speed of fluids, e.g. of air stream; Measuring speed of bodies relative to fluids, e.g. of ship, of aircraft
-
- 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
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Aviation & Aerospace Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Wind Motors (AREA)
Abstract
The present disclosure provides a friction nanogenerator, comprising: the planet carrier is provided with a transmission shaft at one end and extends out of a plurality of output shafts at the other end; the rollers are respectively sleeved outside the output shafts through bearings, and a friction layer is arranged on the surface of each roller; and the stator is sleeved outside the plurality of rollers, and the inner wall of the stator is provided with an electrode unit, so that each roller can be in rolling friction contact with the electrode unit. The self-driven intelligent velocimeter based on the friction nano generator is also provided by the present disclosure.
Description
Technical Field
The disclosure relates to the technical field of energy supply \ sensing, in particular to a friction nano generator and a self-driven intelligent velocimeter based on the same.
Background
Wind energy, water energy and the like are widely distributed renewable energy sources, and play an increasingly important role in the processes of supplying electric energy and coping with energy crisis. For example, according to statistical data, global reserves of wind resources are abundant, with a mineable portion of 5.3 × 10 per year13kWh. Taking an anemometer as an example, the anemometer is an important wind speed monitoring device, which is often operated in unattended operationThe environment is poor and a continuous and reliable long-term energy supply is needed. Up to now, anemometers have mainly been powered by batteries with a limited lifetime, which greatly increases maintenance costs and environmental pollution. Therefore, capturing wind energy from the working environment to power the anemometer is an optimal continuous power scheme.
In 2012, a friction nano-generator based on the second term of maxwell displacement current was invented to be used as a wind energy collector and an active wind sensor. As a wind energy collector, the friction nano generator has the advantages of high power density, compact structure and the like, and can efficiently collect wind energy. In addition, the friction nano generator has higher internal resistance, and output signals are random, so that the requirement of an electric device on stable direct current can be met only through energy management. As an active wind sensor, the friction nano generator can directly convert wind power information into an electric signal without external power supply. However, the processing and transmission of the sensing signal still require an external power supply.
Thus, there is a need for a more sophisticated generator and self-driven velocimeter that meets the long-life, sustainable work in an unattended hostile environment.
Disclosure of Invention
Technical problem to be solved
Based on the above problem, the present disclosure provides a friction nano-generator and self-driven intelligent velocimeter based on the same to alleviate technical problems in the prior art, such as the velocimeter has a large internal resistance, the output signal is random, the energy management is incomplete, and an external power supply is also needed for power supply.
(II) technical scheme
In one aspect of the present disclosure, there is provided a triboelectric nanogenerator comprising: the planet carrier is provided with a transmission shaft at one end and extends out of a plurality of output shafts at the other end; the rollers are respectively sleeved outside the output shafts through bearings, and a friction layer is arranged on the surface of each roller; and the stator is sleeved outside the plurality of rollers, and the inner wall of the stator is provided with an electrode unit, so that each roller can be in rolling friction contact with the electrode unit.
According to the embodiment of the disclosure, the transmission shaft is connected to a driving part, and the driving part can act under the action of mechanical energy to drive the planet carrier to rotate.
According to an embodiment of the present disclosure, the electrode unit includes: the first electrode group comprises a plurality of pairs of first interdigital electrodes which are arranged in parallel and used as an energy output end of the friction nano generator for outputting a first electric signal; and the second electrode group comprises at least one pair of second interdigital electrodes arranged in parallel, is used as a signal output end of the friction nano generator and is used for outputting a second electric signal.
According to the embodiment of the disclosure, the total number of pairs of the first interdigital electrode and the second interdigital electrode is a positive integer multiple of the number of rollers.
According to the embodiment of the present disclosure, the number of the first interdigital electrodes is larger than the number of the second interdigital electrodes.
Another aspect of the present disclosure provides a self-driven intelligent velocimeter based on any one of the above friction nano-generators, including: the energy management module is connected with the energy output end of the friction nano generator, and is used for storing energy after processing the first electric signal output by the friction nano generator and outputting a stable driving signal; and the signal processing module is connected with the signal output end of the friction nano generator at one end and connected with the energy management module at the other end, and is used for converting the second electric signal into rotating speed information of the planet carrier under the driving of the driving signal so as to obtain corresponding monitoring data of the mechanical energy.
According to this disclosed embodiment, self-driven intelligent velocimeter, still include: and the wireless transmitting module is respectively connected with the energy management module and the signal processing module and is used for transmitting the received monitoring data to the wireless receiving module under the driving of the driving signal.
According to an embodiment of the present disclosure, the energy management module includes: the rectification voltage reduction module is electrically connected to the energy output end and is used for rectifying and reducing the voltage of the first electric signal and outputting a first direct current signal; the storage module is electrically connected to the rectification voltage reduction module and is used for storing the electric energy of the first direct current signal; and the voltage stabilizing module is electrically connected with the storage module and used for outputting a driving signal with stable voltage under the action of the electric energy of the first direct current signal stored in the storage module.
According to an embodiment of the present disclosure, the signal processing module includes: the resolving module is electrically connected to the signal output end and used for converting the second electric signal into a measurable second direct current signal; and the control module is electrically connected with the resolving module and used for counting the frequency of the second direct current signal so as to obtain monitoring data and controlling the wireless transmitting module to transmit the monitoring data.
According to the embodiment of the disclosure, the driving signal is used for driving the signal processing module and the wireless transmitting module to operate.
According to the embodiment of the disclosure, the rectification voltage reduction module comprises a rectifier bridge, an electronic switch, a diode and an L-C unit, wherein a first electric signal output by the energy output end generates a first direct current signal after being subjected to full-wave rectification by the rectifier bridge; when the first direct current signal reaches the starting voltage of the electronic switch, the electronic switch is closed, the diode is cut off, and the electric energy of the first direct current signal is temporarily stored in the L-C unit in the forms of magnetic field energy and electric field energy; the storage module is internally provided with a capacitor, when an electronic switch in the rectification voltage reduction module is switched off, the diode is switched on, and the magnetic field energy and the electric field energy temporarily stored in the L-C unit can be transferred to the storage module for energy storage; the voltage stabilizing module comprises an electronic switch and a voltage stabilizing diode, when the energy storage voltage of the storage module exceeds the starting voltage of the electronic switch, the electronic switch is closed, and the energy storage voltage outputs the stable voltage after passing through the voltage stabilizing diode so as to supply energy to the signal processing module and the wireless transmitting module.
According to an embodiment of the present disclosure, the resolving module includes a resistor R1、R2、R3Diode D for voltage regulation3(ii) a Wherein, the resistance R1Is connected in series with the rear end of the second electrode group, and the voltage stabilizing diode is connected in series with the resistor R1Rear end, resistance R2、R3Are firstly connected in series and then connected in parallel integrallyIn the voltage stabilizing diode D3Both ends of (a); the second electric signal passes through a voltage stabilizing diode D3Stabilizing the signal into a stable second direct current signal; the control module comprises a comparator and a counter; when voltage dividing resistor R3When the voltages at the two ends exceed the reference voltage of the comparator, the comparator outputs a high level, the calculation of the counter is increased by 1, the rotating speed of the planet carrier is positively correlated with the rotating speed provided by the mechanical energy, and the frequency of the second electric signal is positively correlated with the rotating speed of the mechanical energy, so that the rotating speed data of the mechanical energy can be measured.
According to the self-driven intelligent velocimeter disclosed by the embodiment of the disclosure, in an original state, the voltage values of the energy storage voltage of the storage module and the stable voltage of the voltage stabilizing module are both 0; when the driving part is driven by mechanical energy, electric energy output by an energy output end of the friction nano generator is continuously stored in the storage module, so that when the voltage value of the stored energy voltage rises to reach a starting voltage threshold value, the voltage stabilizing module outputs a stable voltage to drive the signal processing module and the wireless transmitting module to be started and to periodically run after being started, and along with the energy consumption and the change of fluid flow rate of the periodic running of the signal processing module and the wireless transmitting module, when the stored energy voltage of the storage module drops to a dormancy voltage threshold value, the voltage stabilizing module stops outputting the stable voltage, and the velocimeter enters a dormancy state; and waiting for the driving part to be driven by the fluid again so as to start the operation again after the velocimeter is awakened.
According to an embodiment of the present disclosure, the mechanical energy is wind or water current energy.
(III) advantageous effects
According to the technical scheme, the friction nano generator and the self-driven intelligent velocimeter based on the same have at least one or one part of the following beneficial effects:
(1) the rolling friction between the roller and the electrode of the planetary rolling type friction nano generator greatly reduces the friction force, reduces the starting fluid flow rate of the planetary rolling type friction nano generator and prolongs the service life;
(2) through the functions of the rectification voltage reduction module, the storage module and the voltage stabilization module, the unstable pulse alternating current output by the planetary rolling type friction nano generator is converted into stable direct current, and the application range of the friction nano generator is greatly improved;
(3) by resolving the frequency of the output electric signal, the sensing of the flow velocity of the fluid such as wind or water is realized. The self-driven intelligent velocimeter provided by the disclosure adopts a single planet rolling type friction nano generator to capture and utilize wind energy or water energy and sense the flow rate information of fluids such as wind or water, and combines the energy management module, the signal processing module and the wireless transmitting module to realize high-efficiency, stable and long-endurance autonomous fluid flow rate monitoring and wireless transmitting.
Drawings
Fig. 1 is a schematic structural diagram of a triboelectric nanogenerator according to an embodiment of the disclosure;
FIG. 2 is a schematic cross-sectional view of a triboelectric nanogenerator according to an embodiment of the disclosure;
fig. 3 is a schematic diagram of the composition and working principle of a self-driven intelligent velocimeter based on a friction nano-generator according to an embodiment of the present disclosure;
FIG. 4 is a schematic diagram of the components and circuit structure of an energy management module according to an embodiment of the disclosure;
fig. 5 is a schematic diagram of a composition and a circuit structure of a signal processing module according to an embodiment of the disclosure;
FIG. 6 is a schematic diagram illustrating a relationship between a signal frequency and a wind speed of a second electrical signal at a signal output terminal of the friction nano-generator according to the embodiment of the disclosure;
fig. 7 is a schematic view of a voltage-time relationship of the self-driven intelligent tachometer based on the friction nano-generator in different wind speeds and working modes according to the embodiment of the present disclosure;
fig. 8 is a schematic diagram of energy storage voltage and wind speed data received by a display terminal of a wireless receiving module according to an embodiment of the disclosure.
[ description of main reference numerals in the drawings ] of the embodiments of the present disclosure
1: a generator;
2: an energy management module;
3: a signal processing module;
4: a wireless transmitting module;
5: a wireless receiving module;
1-1: a fan blade;
1-2: a drive shaft;
1-3: a planet carrier;
1-4: a roller;
1-5: a stator;
1-4-1: a friction layer;
1-4-2: a roller body;
1-5-1: a housing;
1-5-2: a first electrode group;
1-5-3: a second electrode group;
2-1: a rectification voltage reduction module;
2-2: a storage module;
2-3: a voltage stabilization module;
3-1: a resolving module;
3-2: and a control module.
Detailed Description
The utility model provides a friction nanometer generator and because its self-driven intelligence tachymeter can realize simultaneously that capture of outside mechanical energy like fluid kinetic energy utilizes and the sensing of fluid velocity of flow, combines energy management module, signal processing module and wireless transmitting module to realize the lasting sustainable monitoring and the wireless transmission of fluid velocity of flow.
For the purpose of promoting a better understanding of the objects, aspects and advantages of the present disclosure, reference is made to the following detailed description taken in conjunction with the accompanying drawings.
In an embodiment of the present disclosure, there is provided a triboelectric nanogenerator, which is shown in fig. 1 and 2 and includes:
one end of the planet carrier is rigidly connected with the fan blades through a transmission shaft, and the other end of the planet carrier extends out of the plurality of output shafts;
the rollers are respectively sleeved outside the output shafts through bearings, and a friction layer is arranged on the surface of each roller;
the inner wall of the stator is provided with an electrode unit which is sleeved outside the plurality of rollers, so that each roller can be in rolling contact with the electrode unit;
in the embodiment of the present disclosure, the transmission shaft is connected to a driving portion, and the driving portion can act under the action of external mechanical energy such as fluid to drive the planet carrier to rotate.
In the embodiment of the present disclosure, a fan blade is taken as an example as a driving portion, when the fan blade rotates under the action of a fluid such as wind or water, the transmission shaft drives the planet carrier to rotate along one direction, so as to drive each roller to rotate along the same direction as the planet carrier along the electrode unit on the inner wall of the stator, and at the same time, each roller rotates relative to the sleeved output shaft, so that the kinetic energy of the fluid such as wind or water is converted into an electrical signal. For example, when the planet carrier rotates clockwise, the roller rotates counterclockwise relative to the sleeved output shaft. The above structure allows a lower fluid flow rate for the start-up of the triboelectric nanogenerator.
In the disclosed embodiment, as shown in fig. 1, the generator 1 is provided with fan blades 1-1, a transmission shaft 1-2, a planet carrier 1-3, rollers 1-4 and a stator 1-5. The fan blade 1-1, the transmission shaft 1-2 and the planet carrier 1-3 are rigidly connected. The planet carrier 1-3 and the roller 1-4 are connected through a bearing and can rotate relatively.
In the disclosed embodiment, as shown in fig. 3, the stator 1-5 is provided with a housing 1-5-1 and an electrode unit arranged on the inner wall, each of the rollers 1-4 comprises a roller body 1-4-2 and a friction layer 1-4-1 arranged on the surface thereof; the electrode unit comprises a first electrode group 1-5-2 and a second electrode group 1-5-3, and the first electrode group is used as an energy output end of the generator and outputs a first electric signal; the second electrode group is used as a signal output end of the generator and outputs a second electric signal; the first electrode group 1-5-2 and the second electrode group 1-5-3 are attached to the inner surface of the case 1-5-1.
The first electrode set comprises a plurality of first interdigitated electrodes and the second electrode set comprises one or more second interdigitated electrodes; the total logarithm of the first interdigital electrode and the second interdigital electrode is positive integral multiple of the number of the rollers; the number of the first interdigital electrode and the second interdigital electrode is even. For example, in the embodiment of the present disclosure, the first electrode group 1-5-2 includes five pairs of first interdigital electrodes arranged in parallel as the energy output end of the friction nano-generator 1. The second electrode group 1-5-3 comprises a pair of second interdigital electrodes arranged in parallel and used as a signal output end of the generator 1. During the rotation, the outer surface of the friction layer 1-4-1 is in contact with the surfaces of the first electrode group 1-5-2 and the second electrode group 1-5-3.
In the embodiment of the present disclosure, the above arrangement enables the fan blade 1-1 to rotate under the action of fluid such as wind or water, for example, the transmission shaft 1-2 drives the planet carrier 1-3 and the roller 1-4 to rotate counterclockwise. During the rotation, the rollers 1-4 simultaneously rotate clockwise along the output shaft of the planet carrier. The rollers 1-4 are in rolling contact with the inner walls of the stators 1-5, so that the friction force between the rollers 1-4 and the inner walls of the stators 1-5 is greatly reduced, and the fluid flow rate required by starting the friction nano generator is reduced.
In this disclosure, there is also provided a self-driven intelligent velocimeter based on the above friction nano-generator, as shown in fig. 3 to 5, the self-driven intelligent velocimeter includes:
the energy management module 2 is connected with the energy output end of the friction nano generator, and is used for storing energy after processing the electric energy of the first electric signal output by the friction nano generator and outputting a stable direct current signal;
and one end of the signal processing module 3 is connected with the signal output end of the friction nano generator, and the other end of the signal processing module is connected with the energy management module, and is used for converting the electric signal output by the signal output end into the rotating speed information of the planet carrier under the driving of the direct current signal output by the energy management module, so as to obtain corresponding mechanical energy monitoring data, such as the fluid flow rate.
In this disclosed embodiment, the tachymeter further includes:
and the wireless transmitting module 4 is respectively connected with the energy management module and the signal processing module and is used for transmitting the received monitoring data of the fluid flow velocity to the wireless receiving module 5 under the driving of the direct current signal output by the energy management module.
In the embodiment of the present disclosure, as shown in fig. 4, the energy management module 2 includes:
a rectifying and voltage-reducing module 2-1, electrically connected to the energy output end, configured to rectify and reduce a first electrical signal (in the embodiment of the present disclosure, an ac signal) output by the energy output end, and output a first dc signal;
the storage module 2-2 is electrically connected to the rectification voltage reduction module 2-1 and is used for storing electric energy of the first direct current signal output by the rectification voltage reduction module 2-1; and
the voltage stabilizing module 2-3 is electrically connected to the storage module 2-2 and is used for outputting a driving signal with stable voltage under the action of the electric energy of the first direct current signal stored in the storage module 2-2;
the driving signal is used for driving the signal processing module 3 and the wireless transmitting module 4 to operate.
The rectification voltage reduction module 2-1 comprises a rectifier bridge and an electronic switch S1Diode D1An L-C unit (composed of an inductor L and a capacitor C in the embodiment of the disclosure)1Composition), the first electrical signal (in the embodiment of the present disclosure, ac pulse electrical signal) output by the energy output terminal is full-wave rectified by the rectifier bridge to generate a first dc signal; when the first DC signal reaches the electronic switch S1On-voltage of, electronic switch S1Closed, diode D1When the first DC signal is cut off, the electric energy of the first DC signal is temporarily stored in the L-C in the form of magnetic field energy and electric field energy1And (4) units.
A capacitor C is arranged in the storage module 2-22When the electronic switch S in the rectification voltage-reduction module 2-11Off, diode D1Conducting and temporarily storing in L-C1The magnetic field energy and the electric field energy of the unit can be stored in the storage module 2-2 for energy storage;
the voltage stabilizing module 2-3 comprises an electronic switch S2And a zener diode D2When the storage voltage U of the storage module 2-2sOver electronic switch S2On-voltage of, electronic switch S2Closed, the stored voltage passing through a zener diode D2Then outputs a stable voltage U0(stable at a certain value) to power the signal processing module 3 and the wireless transmission module 4.
In the embodiment of the present disclosure, as shown in fig. 5, the signal processing module 3 includes:
the resolving module 3-1 is electrically connected to the signal output end and is used for converting a second electric signal output by the signal output end into a measurable second direct current signal;
and the control module 3-2 is electrically connected to the resolving module 3-1 and is used for counting the frequency of the second direct current signal output by the resolving module 3-1 and controlling the wireless transmitting module 4 to transmit monitoring data.
The resolving module 3-1 comprises a resistor R1、R2、R3Diode D for voltage regulation3. The second electrical signal (in the embodiment of the present disclosure, ac pulse electrical signal) passes through a zener diode D3And stabilizing the signal into a stable second direct current signal. The resistor R1A voltage stabilizing diode D connected in series at the rear end of the second electrode group 1-5-33Is connected in series with a resistor R1Rear end, resistance R2、R3Are firstly connected in series and then integrally connected in parallel with a voltage stabilizing diode D3At both ends of the same. The resistor R1、R2、R3Diode D for voltage regulation3Is selected according to the reference voltage of the comparator, so that the voltage dividing resistor R3Voltage U across1Close to and exceeding the reference voltage of the comparator. In this example R1＝3MΩ、R2＝100kΩ、R3120k Ω, zener diode D3The steady voltage value of (2) was 5.2V.
The control module 3-2 includes a comparator and a counter. The reference voltage of the comparator is 1.5V. When voltage dividing resistor R3Voltage U across1When the reference voltage of the comparator is exceeded 1.5V, the comparator outputs a high level U2The counter is incremented by 1. Thus, through the signal output terminal, the resolving module 3-1 and the controlThe module 3-2 can measure the flow rate information of the fluid; referring to fig. 6 again, taking the wind power to drive the tachometer as an example for explanation, the rotation speed of the generator 1 is positively correlated with the wind speed, and the second electrical signal (open-circuit voltage signal U) output by the signal output end is providedS-TENG) The frequency of the wind speed sensor is in positive correlation with the wind speed, so that the self-driven intelligent velocimeter based on the friction nano generator can be used for monitoring the wind speed. Similarly, the flow velocity of fluids such as water can also be monitored by the velocimeter.
In the embodiment of the present disclosure, when the fluid acts on the self-driven intelligent velocimeter based on the friction nano-generator of the present disclosure, the working process includes different states of charging start, autonomous working, low energy storage sleep, and charge re-wake-up. Taking the wind-driven velocimeter as an example for explanation, as shown in fig. 7 and 8, when the driving part of the friction nano-generator 1 is acted by wind with different speeds of 5m/s, 3m/s, 0m/s, and the like, the energy storage voltage U at the two ends of the storage module 2-2 is monitored simultaneouslysAnd a regulated voltage U across the voltage regulation modules 2-30. In the initial state, UsAnd U0The voltage values of (1) are all 0. When the generator 1 is driven by wind of 5m/s, the electric energy generated by the energy output end is continuously stored in the storage module 2-2, UsThe voltage value of (3) rises to 3.3V within 34.2 minutes, and at the same time, U0The voltage value of the wireless transmission module is stabilized to 2.5V, so that the signal processing module 3 and the wireless transmission module 4 are driven to be started, and U is started along with the signal processing module 3 and the wireless transmission module 4sThe voltage value of the transformer is instantaneously reduced from 3.3V to 3.12V. After being opened, U0The voltage value of the voltage can be stabilized at 2.5V. The sampling of the wind speed data (the second electric signal output by the signal output end) and the transmitting frequency of the wireless transmitting module 4 are carried out by the control module 3-2 according to UsIs controlled by the voltage value of UsThe voltage value is periodically monitored by the control module 3-2 and is transmitted together with the wind speed monitoring data through the wireless transmitting module, so that the residual energy and the wind speed data of the self-driven intelligent velocimeter can be received and displayed through the wireless receiving module 5. In the disclosed embodiment, U is when the generator 1 is driven by 5m/s of fluid (illustrated by wind for example)sThe voltage value of the wind power generator is kept above 3.3V, and the wind speed and the energy storage voltage U are keptsThe data is sampled and transmitted every 2 minutes, and the energy captured by the self-driven intelligent velocimeter and the energy consumed by the self-driven intelligent velocimeter are balanced. When the generator 1 is driven by 3m/s wind, UsIs maintained between 3.2 and 3.3, the wind speed and the UsThe data is sampled and transmitted every 2.5 minutes, and the energy captured by the self-driven intelligent velocimeter and the energy consumed by the self-driven intelligent velocimeter are balanced. For further energy saving, when UsIs maintained between 3.0 and 3.2, the wind speed and the UsData was sampled and transmitted every 3 minutes. When the driving wind speed is reduced to 0m/s, the energy in the storage module 2-2 is continuously consumed without being replenished until UsThe voltage value of (2.7) V, U0When the voltage is reduced to 0V, the self-driven intelligent velocimeter is converted into a dormant state. When the generator 1 is again driven by the wind, UsWhen the voltage value reaches 3.3V again, the self-driven intelligent velocimeter is awakened again, and U0The voltage value of (2) is restored to 2.5V again. As shown in fig. 8, under the continuous driving of wind of 5m/s, the self-driven intelligent velocimeter is turned on, the control module 3-2 controls the wireless transmission module 4 to transmit the monitored fluid flow rate data and the monitored energy storage voltage data in a period of 2 minutes or 2.5 minutes, and the wireless reception module 5 receives the monitored data and displays the monitored data on the display terminal. For example, after 5 times of data testing at a fluid flow rate of 5m/s, the driving fluid flow rate is adjusted to 3m/s, the control module 3-2 controls the wireless transmitting module 4 to transmit the monitored fluid flow rate and the energy storage voltage data in a period of 2.5 minutes or 3 minutes, and the wireless receiving module 5 receives the monitored data and displays the data on the display terminal. After 6 times of data testing, the flow rate of the driving fluid is adjusted to 0m/s, and the residual energy in the storage module 2-2 can be supplied to complete two times of data acquisition and emission. When the self-driven intelligent velocimeter enters the sleep state due to low electric quantity, the self-driven intelligent velocimeter can be awakened only by recharging.
So far, the embodiments of the present disclosure have been described in detail with reference to the accompanying drawings. It is to be noted that, in the attached drawings or in the description, the implementation modes not shown or described are all the modes known by the ordinary skilled person in the field of technology, and are not described in detail. Further, the above definitions of the various elements and methods are not limited to the various specific structures, shapes or arrangements of parts mentioned in the examples, which may be easily modified or substituted by those of ordinary skill in the art.
From the above description, those skilled in the art should have clear understanding of the friction nano-generator and the self-driven intelligent velocimeter based on the same disclosed herein.
In summary, the present disclosure provides a friction nano-generator and a self-driven intelligent velocimeter based on the same, wherein the friction nano-generator is a planetary rolling type friction nano-generator, and an output signal of the friction nano-generator is divided into two paths, so that the collection of kinetic energy of fluid such as wind or water and the sensing of fluid flow rate can be simultaneously realized. The energy management module is electrically connected to the energy output end of the generator, and converts pulse-type triboelectricity into stable direct current voltage through the conversion of matching impedance and output voltage of the energy output end of the generator. The direct current voltage supplies power to electronic devices including a signal processing module, a wireless transmitting module and the like. The signal processing module is electrically connected to the signal output end of the generator, the frequency of the generator signal end output open-circuit voltage signal is modulated and counted, the sensing of the flow velocity of the fluid is achieved, and autonomous and intermittent emission of monitoring data is achieved through intelligent regulation.
It should also be noted that directional terms, such as "upper", "lower", "front", "rear", "left", "right", and the like, used in the embodiments are only directions referring to the drawings, and are not intended to limit the scope of the present disclosure. Throughout the drawings, like elements are represented by like or similar reference numerals. Conventional structures or constructions will be omitted when they may obscure the understanding of the present disclosure.
And the shapes and sizes of the respective components in the drawings do not reflect actual sizes and proportions, but merely illustrate the contents of the embodiments of the present disclosure. Furthermore, in the claims, any reference signs placed between parentheses shall not be construed as limiting the claim.
Furthermore, the word "comprising" does not exclude the presence of elements or steps not listed in a claim. The word "a" or "an" preceding an element does not exclude the presence of a plurality of such elements.
The use of ordinal numbers such as "first," "second," "third," etc., in the specification and claims to modify a corresponding element does not by itself connote any ordinal number of the element or any ordering of one element from another or the order of manufacture, and the use of the ordinal numbers is only used to distinguish one element having a certain name from another element having a same name.
In addition, unless steps are specifically described or must occur in sequence, the order of the steps is not limited to that listed above and may be changed or rearranged as desired by the desired design. The embodiments described above may be mixed and matched with each other or with other embodiments based on design and reliability considerations, i.e., technical features in different embodiments may be freely combined to form further embodiments.
Those skilled in the art will appreciate that the modules in the device in an embodiment may be adaptively changed and disposed in one or more devices different from the embodiment. The modules or units or components of the embodiments may be combined into one module or unit or component, and furthermore they may be divided into a plurality of sub-modules or sub-units or sub-components. All of the features disclosed in this specification (including any accompanying claims, abstract and drawings), and all of the processes or elements of any method or apparatus so disclosed, may be combined in any combination, except combinations where at least some of such features and/or processes or elements are mutually exclusive. Each feature disclosed in this specification (including any accompanying claims, abstract and drawings) may be replaced by alternative features serving the same, equivalent or similar purpose, unless expressly stated otherwise. Also in the unit claims enumerating several means, several of these means may be embodied by one and the same item of hardware.
The above-mentioned embodiments are intended to illustrate the objects, aspects and advantages of the present disclosure in further detail, and it should be understood that the above-mentioned embodiments are only illustrative of the present disclosure and are not intended to limit the present disclosure, and any modifications, equivalents, improvements and the like made within the spirit and principle of the present disclosure should be included in the scope of the present disclosure.
Claims (14)
1. A triboelectric nanogenerator comprising:
the planet carrier is provided with a transmission shaft at one end and extends out of a plurality of output shafts at the other end;
the rollers are respectively sleeved outside the output shafts through bearings, and a friction layer is arranged on the surface of each roller; and
the stator is sleeved outside the plurality of rollers, and an electrode unit is arranged on the inner wall of the stator, so that each roller can be in rolling friction contact with the electrode unit.
2. The triboelectric nanogenerator according to claim 1, wherein the transmission shaft is connected to a driving part, and the driving part can act under the action of mechanical energy to drive the planet carrier to rotate.
3. The triboelectric nanogenerator of claim 1, the electrode unit comprising:
the first electrode group comprises a plurality of pairs of first interdigital electrodes which are arranged in parallel and used as an energy output end of the friction nano generator for outputting a first electric signal; and
and the second electrode group comprises at least one pair of second interdigital electrodes arranged in parallel, is used as a signal output end of the friction nano generator and is used for outputting a second electric signal.
4. The triboelectric nanogenerator of claim 3, the total number of pairs of the first and second interdigitated electrodes being a positive integer multiple of the number of rollers.
5. The triboelectric nanogenerator of claim 3, the number of first interdigitated electrodes being greater than the number of second interdigitated electrodes.
6. A self-driven intelligent velocimeter based on a triboelectric nanogenerator according to any of claims 1 to 5, comprising:
the energy management module is connected with the energy output end of the friction nano generator, and is used for storing energy after processing the first electric signal output by the friction nano generator and outputting a stable driving signal; and
and one end of the signal processing module is connected with the signal output end of the friction nano generator, and the other end of the signal processing module is connected with the energy management module and used for converting the second electric signal into rotating speed information of the planet carrier under the driving of the driving signal so as to obtain corresponding monitoring data of the mechanical energy.
7. The self-driven intelligent velocimeter of claim 6, further comprising:
and the wireless transmitting module is respectively connected with the energy management module and the signal processing module and is used for transmitting the received monitoring data to the wireless receiving module under the driving of the driving signal.
8. Self-driven intelligent velocimeter according to claim 6, the energy management module comprising:
the rectification voltage reduction module is electrically connected to the energy output end and is used for rectifying and reducing the voltage of the first electric signal and outputting a first direct current signal;
the storage module is electrically connected to the rectification voltage reduction module and is used for storing the electric energy of the first direct current signal; and
and the voltage stabilizing module is electrically connected with the storage module and is used for outputting a driving signal with stable voltage under the action of the electric energy of the first direct current signal stored in the storage module.
9. The self-driven intelligent velocimeter of claim 7, the signal processing module comprising:
the resolving module is electrically connected to the signal output end and used for converting the second electric signal into a measurable second direct current signal; and
and the control module is electrically connected with the resolving module and used for counting the frequency of the second direct current signal so as to obtain monitoring data and controlling the wireless transmitting module to transmit the monitoring data.
10. The self-driven intelligent velocimeter of claim 7, wherein the driving signal is used to drive the operation of the signal processing module and the wireless transmission module.
11. The self-driven intelligent velocimeter of claim 8,
the rectification voltage reduction module comprises a rectifier bridge, an electronic switch, a diode and an L-C unit, and a first electric signal output by the energy output end generates a first direct current signal after being subjected to full-wave rectification by the rectifier bridge; when the first direct current signal reaches the starting voltage of the electronic switch, the electronic switch is closed, the diode is cut off, and the electric energy of the first direct current signal is temporarily stored in the L-C unit in the forms of magnetic field energy and electric field energy;
the storage module is internally provided with a capacitor, when an electronic switch in the rectification voltage reduction module is switched off, the diode is switched on, and the magnetic field energy and the electric field energy temporarily stored in the L-C unit can be transferred to the storage module for energy storage;
the voltage stabilizing module comprises an electronic switch and a voltage stabilizing diode, when the energy storage voltage of the storage module exceeds the starting voltage of the electronic switch, the electronic switch is closed, and the energy storage voltage outputs the stable voltage after passing through the voltage stabilizing diode so as to supply energy to the signal processing module and the wireless transmitting module.
12. The self-driven intelligent velocimeter of claim 9,
the resolving module comprises a resistor R1、R2、R3Diode D for voltage regulation3(ii) a Wherein, the resistance R1Is connected in series to the secondThe rear end of the electrode group, a voltage stabilizing diode is connected in series with the resistor R1Rear end, resistance R2、R3Are firstly connected in series and then integrally connected in parallel with the voltage stabilizing diode D3Both ends of (a);
the second electric signal passes through a voltage stabilizing diode D3Stabilizing the signal into a stable second direct current signal;
the control module comprises a comparator and a counter;
when voltage dividing resistor R3When the voltages at the two ends exceed the reference voltage of the comparator, the comparator outputs a high level, the calculation of the counter is increased by 1, the rotating speed of the planet carrier is positively correlated with the rotating speed provided by the mechanical energy, and the frequency of the second electric signal is positively correlated with the rotating speed of the mechanical energy, so that the rotating speed data of the mechanical energy can be measured.
13. The self-driven intelligent velocimeter according to claim 6 or 7, wherein in an original state, the voltage values of the energy storage voltage of the storage module and the stable voltage of the voltage stabilization module are both 0; when the driving part is driven by mechanical energy, electric energy output by an energy output end of the friction nano generator is continuously stored in the storage module, so that when the voltage value of the stored energy voltage rises to reach a starting voltage threshold value, the voltage stabilizing module outputs a stable voltage to drive the signal processing module and the wireless transmitting module to be started and to periodically run after being started, and along with the energy consumption and the change of fluid flow rate of the periodic running of the signal processing module and the wireless transmitting module, when the stored energy voltage of the storage module drops to a dormancy voltage threshold value, the voltage stabilizing module stops outputting the stable voltage, and the velocimeter enters a dormancy state; and waiting for the driving part to be driven by the fluid again so as to start the operation again after the velocimeter is awakened.
14. A self-propelled intelligent velocimeter according to any of claims 6 to 13 wherein the mechanical energy is wind or water flow energy.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110487727.7A CN113037129A (en) | 2021-04-30 | 2021-04-30 | Friction nanometer generator and self-driven intelligent velocimeter based on same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110487727.7A CN113037129A (en) | 2021-04-30 | 2021-04-30 | Friction nanometer generator and self-driven intelligent velocimeter based on same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113037129A true CN113037129A (en) | 2021-06-25 |
Family
ID=76455467
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110487727.7A Pending CN113037129A (en) | 2021-04-30 | 2021-04-30 | Friction nanometer generator and self-driven intelligent velocimeter based on same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113037129A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115541926A (en) * | 2022-12-01 | 2022-12-30 | 中国科学院深海科学与工程研究所 | Self-powered current meter applied to ocean flow field flow velocity measurement |
| WO2023035591A1 (en) * | 2021-09-13 | 2023-03-16 | 浙江大学 | High-sensitivity instantaneous self-powered wireless sensing system of frictional nano-power generator |
-
2021
- 2021-04-30 CN CN202110487727.7A patent/CN113037129A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023035591A1 (en) * | 2021-09-13 | 2023-03-16 | 浙江大学 | High-sensitivity instantaneous self-powered wireless sensing system of frictional nano-power generator |
| CN115541926A (en) * | 2022-12-01 | 2022-12-30 | 中国科学院深海科学与工程研究所 | Self-powered current meter applied to ocean flow field flow velocity measurement |
| CN115541926B (en) * | 2022-12-01 | 2023-03-24 | 中国科学院深海科学与工程研究所 | Self-powered current meter applied to ocean flow field flow velocity measurement |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Weimer et al. | Remote area wind energy harvesting for low-power autonomous sensors | |
| CN113037129A (en) | Friction nanometer generator and self-driven intelligent velocimeter based on same | |
| Fang et al. | A high-performance triboelectric-electromagnetic hybrid wind energy harvester based on rotational tapered rollers aiming at outdoor IoT applications | |
| Ramasur et al. | A wind energy harvester for low power wireless sensor networks | |
| Park et al. | Ambimax: Autonomous energy harvesting platform for multi-supply wireless sensor nodes | |
| CN111313742B (en) | Power management module for friction nano generator and intelligent buoy system | |
| US7692411B2 (en) | System for energy harvesting and/or generation, storage, and delivery | |
| US20170133938A1 (en) | Micro-energy harvester for battery free applications | |
| US20100060231A1 (en) | Method and Apparatus for Energy Harvesting and/or Generation, Storage, and Delivery | |
| WO2004047284A1 (en) | Wind power generator | |
| Wu et al. | Design of a wind energy harvesting wireless sensor node | |
| Le et al. | Energy-neutral design framework for supercapacitor-based autonomous wireless sensor networks | |
| Qin et al. | Self-powered Internet of Things sensing node based on triboelectric nanogenerator for sustainable environmental monitoring | |
| CN215956291U (en) | Friction nanometer generator and self-driven intelligent velocimeter based on same | |
| Menéndez et al. | Displacement current-based energy harvesters in power grids: Topologies and performance evaluation | |
| EP3825547A1 (en) | Wind-driven and self-driven power generation apparatus | |
| Zhang et al. | A hybrid nanogenerator based on wind energy harvesting for powering self-driven sensing systems | |
| Gao et al. | Self-powered system for environment and aeolian vibration monitoring in the high-voltage transmission system by multi-directional wind-driven triboelectric nanogenerator | |
| Hu et al. | Round-trip oscillation triboelectric nanogenerator with high output response and low wear to harvest random wind energy | |
| CN110971139B (en) | Self-powered wireless communication device | |
| Fang et al. | An efficient electromagnetic wind energy harvester for self-powered wireless sensor node | |
| Zhang et al. | An efficient harvester with an autoregulatory driving arm to capture random wind energy | |
| Shrestha et al. | A Rotational Wind Energy Harvester and Self-Powered Portable Weather Station | |
| Wang et al. | A Rotational Electromagnetic Energy Harvester with a Self-Powered MPPT Circuit for IoT Applications | |
| CN111257759B (en) | Flow battery monitoring device and flow battery monitoring and regulating system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |