CN110006495A - A kind of water flow measuring device and method based on single impeller - Google Patents
A kind of water flow measuring device and method based on single impeller Download PDFInfo
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- CN110006495A CN110006495A CN201910344836.6A CN201910344836A CN110006495A CN 110006495 A CN110006495 A CN 110006495A CN 201910344836 A CN201910344836 A CN 201910344836A CN 110006495 A CN110006495 A CN 110006495A
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- water flow
- magnet
- cantilever beam
- impeller
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 159
- 238000000034 method Methods 0.000 title claims description 18
- 239000000835 fiber Substances 0.000 claims abstract description 31
- 230000003287 optical effect Effects 0.000 claims abstract description 22
- 239000013307 optical fiber Substances 0.000 claims abstract description 21
- 238000012545 processing Methods 0.000 claims abstract description 13
- 230000000694 effects Effects 0.000 claims description 16
- 238000004891 communication Methods 0.000 claims description 6
- 230000006698 induction Effects 0.000 claims description 5
- 239000012535 impurity Substances 0.000 claims description 3
- 238000005259 measurement Methods 0.000 abstract description 28
- 238000005516 engineering process Methods 0.000 description 9
- 230000006870 function Effects 0.000 description 7
- 230000005540 biological transmission Effects 0.000 description 6
- 230000003993 interaction Effects 0.000 description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 238000004590 computer program Methods 0.000 description 4
- 230000007812 deficiency Effects 0.000 description 4
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- 239000012530 fluid Substances 0.000 description 4
- 239000000463 material Substances 0.000 description 4
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- 238000006243 chemical reaction Methods 0.000 description 3
- 238000001514 detection method Methods 0.000 description 3
- 238000006073 displacement reaction Methods 0.000 description 3
- 238000005562 fading Methods 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 2
- 229910001021 Ferroalloy Inorganic materials 0.000 description 2
- 230000000747 cardiac effect Effects 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 238000005192 partition Methods 0.000 description 2
- 238000005381 potential energy Methods 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
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- 235000013399 edible fruits Nutrition 0.000 description 1
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F1/00—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow
- G01F1/05—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects
- G01F1/06—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects using rotating vanes with tangential admission
- G01F1/065—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects using rotating vanes with tangential admission with radiation as transfer means to the indicating device, e.g. light transmission
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F15/00—Details of, or accessories for, apparatus of groups G01F1/00 - G01F13/00 insofar as such details or appliances are not adapted to particular types of such apparatus
- G01F15/12—Cleaning arrangements; Filters
- G01F15/125—Filters
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- 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
Abstract
The embodiment of the invention discloses a kind of water flow measuring devices, comprising: impeller, the impeller include multiple blades, and the end of at least one blade in the multiple blade is provided with the first magnet；Cantilever beam, the cantilever beam are arranged above the impeller, and the cantilever beam has fixing end and free end, and the free end close to the cantilever beam is provided with the second magnet；Fiber-optic grating sensor is set at the ontology of the cantilever beam；Fiber grating demodulation device is connected with the fiber-optic grating sensor by optical fiber, receives and demodulate the real-time wavelength data of the optical signal from the fiber-optic grating sensor；Signal processing module calculates the size of the water flow and is presented according to the real-time wavelength data.In this way, can be realized more rapidly, more convenient and more accurate water flow measurement, anti-interference ability is stronger.
Description
Technical field
The present embodiments relate to field of photodetection more particularly to a kind of water flow measurements based on fiber-optic grating sensor
Measure device and method.
Background technique
Wisdom water utilities is one of core direction of smart city, is the final goal of water utilities informationization, and Intelligent watermeter
It is wisdom water utilities important component again.As city intelligent water utilities is built, intelligence is widely applied, and traditional water flow measures
Amount device water meter is no longer satisfied the long-range measurement of meter reading in real time water flow, make the water meter intelligence of traditional type measurement water also at
For key.
Inventor has found in the implementation of the present invention: most traditional electronic sensors due in sensor in spy
Property and external condition influence, in use have some defects and deficiency that can not ignore.For example, in the condition of strong-electromagnetic field
Under, electronic sensor is easy by electromagnetic interference, and in remote work, conditional electronic formula sensor is in power supply, signal long distance
It is not sufficiently stable from transmission etc..
Therefore, a kind of more convenient, quick and reliable and stable measurement method is needed, to realize the measurement of water flow.
Summary of the invention
In view of this, the embodiment of the present invention provides a kind of water flow measuring device based on fiber-optic grating sensor, solve
Measuring water flow inconvenient, inaccurate problem.
In a first aspect, the embodiment of the invention provides a kind of water flow measuring device, including water inlet, water outlet, it is special
Sign is, the water flow measuring device further include:
Impeller is arranged between the water inlet and the water outlet, and the impeller includes multiple blades, described more
The end of at least one blade in a blade is provided with the first magnet；
Cantilever beam, the cantilever beam are arranged above the impeller, and the cantilever beam has fixing end and free end, are leaned on
The free end of the nearly cantilever beam is provided with the second magnet；
Fiber-optic grating sensor is set at the ontology of the cantilever beam；
Fiber grating demodulation device is connected with the fiber-optic grating sensor by optical fiber, receives and demodulate from the light
The real-time wavelength data of the optical signal of fiber grating sensor；
Signal processing module calculates the size of the water flow and is presented according to the real-time wavelength data.
Optionally, it includes: described that the end of at least one blade in the multiple blade, which is provided with the first magnet,
The end of a blade in multiple blades is provided with the first magnet.In this case, impeller per revolution, the first magnet with
Second magnet meets once, and direct action occurs therebetween, and a deformation, the light in fiber-optic grating sensor occur for cantilever beam
One-shot change occurs for signal wavelength.
Optionally, it includes: described that the end of at least one blade in the multiple blade, which is provided with the first magnet,
The end of equally distributed multiple blades is provided with multiple first magnet on impeller.Optionally, more on the impeller
The end of a blade is evenly arranged with 2 first magnet, and the two sides that the two first magnet are oppositely arranged on wheel disc are close
Edge；Optionally, the end of multiple blades on the impeller is evenly arranged with 3 first magnet；Optionally, exist
The end of multiple blades on the impeller is evenly arranged with 4 first magnet.In this case, the every rotation one of impeller
Circle, the first magnet and the second magnet meet repeatedly, and repeatedly effect occurs therebetween, and multiple deformation, optical fiber light occur for cantilever beam
Repeatedly variation occurs for the wavelength of optical signal in gate sensor.By analyzing wavelength of optical signal change frequency, also anti-leaf can be released
Turnning circle is taken turns, and then calculates water flow size.
Optionally, described device further includes shell, and the water inlet and the water outlet are respectively arranged at the shell and lean on
The two sides of nearly bottom；The impeller, the cantilever beam are all set in the inside of the shell；The fixing end of the cantilever beam is consolidated
Due on the inner sidewall of the shell；The optical fiber passes through the fiber grating solution that the side wall of outer shell is connected to the shell exterior
Adjust device.
Optionally, the fixing end of the cantilever beam is welded on the inner sidewall of the shell.
Optionally, there is a mounting hole on the side wall of the shell, optical fiber passes through institute after fiber-optic grating sensor stretching
Mounting hole is stated, external fiber grating demodulation device is then connected to.
Optionally, the fiber-optic grating sensor is arranged at the body interior of the cantilever beam or is arranged at described outstanding
The surface of arm beam.
Optionally, there is groove in the middle part of the cantilever beam, the fiber-optic grating sensor is arranged at the inside grooves；
Optionally, there is long stripes through hole in the middle part of the cantilever beam, the fiber-optic grating sensor is placed in the through-hole；It is optional
, the cantilever beam is strip thin slice, and the modes such as the fiber-optic grating sensor is stuck, welds, bundling, screw is fixed are solid
At the cantilever beam.
Optionally, the wheel disc of the impeller is in that vertical direction is placed in the interior of shell, the blade face of side
The water inlet, when water flow is flowed into from the water inlet, the impeller can rotate under the promotion of the water flow.It is optional
, the wheel disc of the impeller is in that non-level direction is placed in the interior of shell, when water flow is flowed into from the water inlet,
The impeller can rotate under the promotion of the water flow.In fact, only if it were not for the impeller is horizontally arranged, as long as when described
When the first magnet rotors to highest point, can be located above the water surface, do not influence gravitation between the first magnet and the second magnet or
The effect of person's repulsion can just realize the technical effect of the invention to be realized.
Optionally, wherein second magnet is correspondingly arranged with first magnet, when first magnet turns with blade
When moving to the cantilever beam, second magnet be located at first magnet position directly above or near so that two
Person can generate magnetic force induction effect.Wherein, first magnet and the second magnet are all positions when carrying out magnetic force induction effect
In air, rather than it is located at below the water surface, in this case, the resistance of water can be reduced, improve measurement accuracy.
Optionally, the homopolarity of second magnet and first magnet is oppositely arranged；Optionally, the two is also possible to
It is heteropolar to be oppositely arranged.By repulsion or graviational interaction, so that a degree of deformation occurs for cantilever beam.When the two is heteropolar opposite
When setting, between cantilever beam and the impeller should between be separated with preset distance, avoid being bonded because of gravitation therebetween, after influencing
Continuous measurement.
Optionally, if cantilever beam itself is made if it is ferroalloy materials or ferrous material, it is also not necessary to set
The second magnet is set, at this point, also can produce a degree of deformation effects by the gravitation of the first magnet and cantilever beam itself.
When the metallic character and first magnet generation gravitation by overarm arm itself, the overarm arm should be between the wheel disc
Every the distance of predetermined length, avoids being bonded because of gravitation therebetween, influence subsequent measurement.
Optionally, the water flow measuring device further includes wireless communication module, for passing the real-time wavelength data
It is defeated by the signal processing module of distal end.
Optionally, can be carried out data transmission by the mobile communication modules such as bluetooth, WIFI, WLAN, GSM, 4G.
Optionally, the water flow measuring device further includes filtering module, is used for before water flow enters the water inlet,
Impurity in water flow is filtered.
Second aspect, the embodiment of the invention also provides a kind of water flow measuring methods, are applied to water flow above-mentioned and measure
Measure device, it is characterised in that:
When water flow is flowed into from the water inlet, the impeller starts to rotate under the promotion of the water flow；
First magnet installed on impeller is started turning also with impeller, when first magnet rotors are to close to outstanding
It when the second magnet of arm beam free end, has an effect therebetween, causes described because of the gravitation or repulsion between magnet
Deformation occurs for cantilever beam；
On the basis of deformation occurs for the cantilever beam, it is placed in inside the cantilever beam or the fiber grating on surface passes
The wavelength of optical signal in sensor changes；
Receive and demodulate the optical signal of the fiber-optic grating sensor output；
According to the real-time wavelength data of the optical signal, calculates the size of the water flow and presented.
The embodiment of the present invention is measured using fiber grating sensing technology come flow, the flow velocity to water flow.Firstly, optical fiber
Grating sensing technique has higher reliability and validity, compared to conditional electronic formula sensor, fiber-optic grating sensor gram
Electromagnetic interference and actively powered limitation have been taken, has also had the characteristics that highly sensitive, anticorrosive, high temperature resistant, and fiber grating
Sensor it is small in size, at low cost, be suitble to be widely used in every field.Compared to the method using in optic fiber displacement sensor based on light-intensity test
Device, fiber-optic grating sensor will not be surveyed due to the frequency that the variable of detection is center wavelength because of the influence of fading of power
The change of quantitative change amount, measurement and transmission are more stable.The measurement that fiber grating sensing technology applies to water flow be can overcome the disadvantages that into biography
Water meter of uniting measures the deficiency of water device, but also is able to satisfy under more complex environments and remote real-time water measurement.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
It obtains other drawings based on these drawings.
Fig. 1 is the structural schematic diagram for the water flow measuring device that one embodiment of the invention provides；
Fig. 2 be another embodiment of the present invention provides water flow measuring device operation schematic diagram.
Specific embodiment
The present invention is described in further detail with reference to the accompanying drawings and examples.It is understood that this place is retouched
The specific embodiment stated is used only for explaining the present invention rather than limiting the invention.It also should be noted that in order to just
Only the parts related to the present invention are shown in description, attached drawing rather than entire infrastructure.
It also should be noted that only the parts related to the present invention are shown for ease of description, in attached drawing rather than
Full content.It should be mentioned that some exemplary embodiments are described before exemplary embodiment is discussed in greater detail
At the processing or method described as flow chart.Although operations (or step) are described as the processing of sequence by flow chart,
It is that many of these operations can be implemented concurrently, concomitantly or simultaneously.In addition, the sequence of operations can be by again
It arranges.Processing can be terminated when its operations are completed, it is also possible to have the additional step being not included in attached drawing.Processing
It can correspond to method, function, regulation, subroutine, subprogram etc..
Referenced herein " embodiment " is it is meant that a particular feature, structure, or characteristic described can wrap in conjunction with the embodiments
Containing at least one embodiment of the present invention.Each position in the description occur the phrase might not each mean it is identical
Embodiment, nor the independent or alternative embodiment with other embodiments mutual exclusion.Those skilled in the art explicitly and
Implicitly understand, embodiment described herein can be combined with other embodiments.
Optical fiber sensing technology has been come across earliest in the 1970s, since appearance, is just widely paid close attention to and again
Depending on being applied in various fields, and play good effect.In recent years, with the continuous development of optical fiber sensing technology, light
Fiber sensor is widely used in fields such as electric system, petrochemical industry, aerospace, environmental protection, national defence, and shows wide
Wealthy development prospect.
Fig. 1 shows a kind of structural schematic diagram of water flow measuring device, as shown in Figure 1, the device includes water inlet, goes out
The mouth of a river, which is characterized in that the water flow measuring device further include:
Impeller is arranged between the water inlet and the water outlet, and the impeller includes multiple blades, described more
The end of at least one blade in a blade is provided with the first magnet；
Cantilever beam, the cantilever beam are arranged above the impeller, and the cantilever beam has fixing end and free end, are leaned on
The free end of the nearly cantilever beam is provided with the second magnet；
Fiber-optic grating sensor is set at the ontology of the cantilever beam；
Fiber grating demodulation device is connected with the fiber-optic grating sensor by optical fiber, receives and demodulate from the light
The real-time wavelength data of the optical signal of fiber grating sensor；
Signal processing module calculates the size of the water flow and is presented according to the real-time wavelength data.
Wherein, the quantity that the end of at least one blade in the multiple blade is provided with the first magnet can be 1
It is a or multiple, it is depending on the circumstances.For example, the end of a blade in the multiple blade is provided with the first magnetic
Iron, in this case, impeller per revolution, the first magnet and the second magnet meet once, and direct action occurs therebetween,
Deformation occurs for cantilever beam, and one-shot change occurs for the wavelength of optical signal in fiber-optic grating sensor.In this case, it measures
Precision highest is also to enclose corresponding water flow with wheel rotation one to be limited, that is, impeller one week corresponding water flow of every rotation.
If it is intended to measurement is more accurate, if impeller size is bigger, multiple first magnetic can be set
Iron.Two first magnet are uniformly arranged on the impeller for example, working as, and the line of two first magnet just will
When the impeller is divided into two, impeller per revolution, the first magnet and the second magnet meet 2 times, and 2 works occur therebetween
With 2 deformation occurs for cantilever beam, and 2 variations occur for the wavelength of optical signal in fiber-optic grating sensor.In this case, it surveys
Accuracy of measurement is that wheel rotation 1/2 encloses corresponding water flow.
Certainly, in the appropriate case, three, four, five even more first magnet also can be set, these
Magnet is evenly distributed on wheel disc, and is located at corresponding blade at the position at edge.In this case, the every rotation one of impeller
Circle, the first magnet and the second magnet meet repeatedly, and repeatedly effect occurs therebetween, and multiple deformation, optical fiber light occur for cantilever beam
Repeatedly variation occurs for the wavelength of optical signal in gate sensor.By analyzing wavelength change number, also anti-wheel rotation can be released
Number is enclosed, and then calculates water flow size.
Certainly, the first magnet number is not The more the better yet, and cantilever beam deformation recovery needs the regular hour, if deformation
Frequency is too high, it is difficult to restore completely, then can also seriously affect the accuracy of measurement.
Under normal conditions, described device can also include shell, and the water inlet and the water outlet are respectively arranged at institute
State two sides of the shell close to bottom；The impeller, the cantilever beam are all set in the inside of the shell；The cantilever beam is consolidated
Fixed end is fixed on the inner sidewall of the shell；The optical fiber passes through the light that the side wall of outer shell is connected to the shell exterior
Fine grating demodulation device.The purpose being arranged in this way, be in order to allow under impeller it is partially submerged in water, top quartile in air,
When its rotation and the second magnet in overarm arm, magnetic force work occurs between the first magnet and the second magnet in air
With without the resistance by water, and influencing the accuracy of measurement.
Optionally, the fixing end of the cantilever beam is welded on the inner sidewall of the shell.It equally, can also be by viscous
Other physics modes such as patch, screw fixation are fixed.
Optionally, there is a mounting hole on the side wall of the shell, optical fiber passes through institute after fiber-optic grating sensor stretching
Mounting hole is stated, external fiber grating demodulation device is then connected to.
Wherein, the fiber-optic grating sensor is arranged at the body interior of the cantilever beam or is arranged at the cantilever
The surface of beam.
Optionally, there is groove in the middle part of the cantilever beam, the fiber-optic grating sensor is arranged at the inside grooves；
Optionally, there is long stripes through hole in the middle part of the cantilever beam, the fiber-optic grating sensor is placed in the through-hole；It is optional
, the cantilever beam is strip thin slice, and the modes such as the fiber-optic grating sensor is stuck, welds, bundling, screw is fixed are solid
At the cantilever beam.
Wherein, the wheel disc of the impeller can be placed in the interior of shell, the blade face of side in vertical direction
The water inlet, when water flow is flowed into from the water inlet, the impeller can rotate under the promotion of the water flow.It is optional
, the wheel disc of the impeller is in that non-level direction is placed in the interior of shell, when water flow is flowed into from the water inlet,
The impeller can rotate under the promotion of the water flow.In fact, only if it were not for the impeller is horizontally arranged, as long as when described
When the first magnet rotors to highest point, can be located above the water surface, do not influence gravitation between the first magnet and the second magnet or
The effect of person's repulsion can just realize the technical effect of the invention to be realized.
When vertical place, impeller is directly by the impact of water flow, and velocity of rotation is more faster；When placing at other angles
When, although its revolving speed is affected, its with respect to water flow be it is certain, can also be with by the circle number of measurement rotation
The measured value of water flow is obtained by calculation.
Optionally, wherein second magnet is correspondingly arranged with first magnet, when first magnet turns with blade
When moving to the cantilever beam, second magnet be located at first magnet position directly above or near so that two
Person can generate magnetic force induction effect.Wherein, first magnet and the second magnet are all positions when carrying out magnetic force induction effect
In air, rather than it is located at below the water surface, in this case, the resistance of water can be reduced, improve measurement accuracy.
Optionally, the homopolarity of second magnet and first magnet is oppositely arranged；Optionally, the two is also possible to
It is heteropolar to be oppositely arranged.By repulsion or graviational interaction, so that a degree of deformation occurs for cantilever beam.When the two is heteropolar opposite
When setting, between cantilever beam and the impeller should between be separated with preset distance, avoid being bonded because of gravitation therebetween, after influencing
Continuous measurement.
Optionally, if cantilever beam itself is made if it is ferroalloy materials or ferrous material, it is also not necessary to set
The second magnet is set, at this point, also can produce a degree of deformation effects by the gravitation of the first magnet and cantilever beam itself.
When the metallic character and first magnet generation gravitation by overarm arm itself, the overarm arm should be between the wheel disc
Every the distance of predetermined length, avoids being bonded because of gravitation therebetween, influence subsequent measurement.
Optionally, the water flow measuring device further includes wireless communication module, for passing the real-time wavelength data
It is defeated by the signal processing module of distal end.
Optionally, can be carried out data transmission by the mobile communication modules such as bluetooth, WIFI, WLAN, GSM, 4G.It is optional
, the water flow measuring device should have independent numbering, transmit the same of real-time wavelength data in mode by wireless communication
When, the independent numbering of itself can be sent to recipient in the form of a signal, recipient receives after signal, it will be able to corresponding
Ground finds specific measurement position or room number, is unlikely to mutually to obscure.
Optionally, the wireless communication module can also be used to send caution signal, when water flow exception, for example, centainly
When (for example, 1 year, one month, half a year etc.) passes through without water flow in time, alternatively, for example, continuous long-time big flow passes through
When (for example, continuous one day night is all big flow), alarm signal can be all issued, to prompt user to check.
Sealing device has can be set in the water inlet, prevents water flow from flowing out from the water inlet, and measurement is tied
Fruit inaccuracy.
Filtering module has can be set in the water inlet, is used for before water flow enters the water inlet, in water flow
Impurity be filtered.
Due to the characteristic that magnet has homopolar-repulsion or there is a natural attraction between the sexes, when the fluid impact impeller as water, water
Power potential energy impeller carry out circular motion, be bonded in magnet each cycle on impeller all can with it is Nian Jie on a cantilever beam
Magnet generates repulsive force, so that cantilever beam generating period is bent, is pasted onto the fiber bragg grating of cantilever beam middle part surface
Physical deformation is also occurred therewith by the curved power of cantilever beam, the physical deformation of fiber bragg grating leads to its refractive index and week
Phase changes simultaneously, and the variation of the two also further determines the wherein long variation occurred of cardiac wave.It is direct in cantilever beam front
By the active force of magnet, the variable quantity of the central wavelength of fiber bragg grating increases, and waveform and wavelength show one
The form of kind jump.It is drifted about and is jumped according to fiber bragg grating central wavelength, the number of statistics wavelength jump is revolved with impeller
The accumulative revolution of the wing is directly proportional, calculates the relationship of outdegree and Water interaction, can calculate the size of fluid flow.
The scheme measures through the embodiment of the present invention come flow, the flow velocity to water flow.Firstly, optical fiber grating sensing
Technology has higher reliability and validity, and compared to conditional electronic formula sensor, fiber-optic grating sensor overcomes electromagnetism
Interference and actively powered limitation, also have the characteristics that highly sensitive, anticorrosive, high temperature resistant, and fiber-optic grating sensor
It is small in size, at low cost, it is suitble to be widely used in every field.Compared to the optical fibre displacement sensor based on light-intensity test, optical fiber
Grating sensor, will not be because of the influence of fading measurand of power due to the frequency that the variable of detection is center wavelength
Change, measurement and transmission are more stable.The measurement that fiber grating sensing technology applies to water flow can overcome the disadvantages that conventional water meter is surveyed
The deficiency of water device is measured, but also is able to satisfy under more complex environments and remote real-time water flow measurement.
Fig. 2 shows another embodiment of the present invention provides water flow measuring device operation schematic diagram, as shown in Fig. 2,
The device includes conversion module, optical fiber grating sensing module and information acquisition module, in which:
Conversion module is used to for the power of water flow being converted into the kinetic energy of impeller rotation, and the kinetic energy that impeller rotates is converted into
The deformation of the cantilever beam is further converted forming fibre-optic grating by fiber grating sensor module by the deformation of cantilever beam
The variation of wavelength of optical signal in sensor；Demodulation is carried out by situation of change of the information acquisition module to the wavelength of optical signal
Analysis determines the size of corresponding water flow.
In embodiments of the present invention, conversion module may include impeller.When water flow is flowed out from water inlet inflow, from water outlet
When, the percussion of water flow starts turning the impeller, to realize that the kinetic energy of water flow turns between the kinetic energy of impeller
It changes；It further, further include the first magnet on the impeller and the second magnet on cantilever beam, wheel rotation mistake
Gravitation or repulsion occur between the first magnet and the second magnet for Cheng Zhong, so that a degree of deformation occurs for overarm arm.
Optical fiber grating sensing module includes the fiber-optic grating sensor positioned at overarm arm inside or surface, when cantilever beam is sent out
When raw deformation, a degree of variation can occur for the optical signal in fiber-optic grating sensor, for example, wavelength changes a lot.
Information acquisition module can be acquired and analyze to the optical signal, determine the frequency and secondary of its optical wavelength variation
The information such as number converse the number of wheel rotation, and then calculate the size of water flow.
This mode illustrated through the embodiment of the present invention can greatly promote the sensitivity of measuring water flow and accurate
Degree, also, since compared to conditional electronic formula sensor, fiber-optic grating sensor overcomes electromagnetic interference and actively powered limit
System, also has the characteristics that highly sensitive, anticorrosive, high temperature resistant, and fiber-optic grating sensor is small in size, at low cost, is suitble to
It is widely used in every field, is able to satisfy under more complex environments and remote real-time water flow measurement.
The embodiment of the invention also provides a kind of water flow measuring methods, are applied to water flow measuring device above-mentioned,
It is characterized in that:
When water flow is flowed into from the water inlet, the impeller starts to rotate under the promotion of the water flow；
First magnet installed on impeller is started turning also with impeller, when first magnet rotors are to close to outstanding
It when the second magnet of arm beam free end, has an effect therebetween, causes described because of the gravitation or repulsion between magnet
Deformation occurs for cantilever beam；
On the basis of deformation occurs for the cantilever beam, it is placed in inside the cantilever beam or the fiber grating on surface passes
The wavelength of optical signal in sensor changes；
Receive and demodulate the optical signal of the fiber-optic grating sensor output；
According to the real-time wavelength data of the optical signal, calculates the size of the water flow and presented.
Due to the characteristic that magnet has homopolar-repulsion or there is a natural attraction between the sexes, when the fluid impact impeller as water, water
Power potential energy impeller carry out circular motion, be bonded in magnet each cycle on impeller all can with it is Nian Jie on a cantilever beam
Magnet generates repulsive force, so that cantilever beam generating period is bent, is pasted onto the fiber bragg grating of cantilever beam middle part surface
Physical deformation is also occurred therewith by the curved power of cantilever beam, the physical deformation of fiber bragg grating leads to its refractive index and week
Phase changes simultaneously, and the variation of the two also further determines the wherein long variation occurred of cardiac wave.It is direct in cantilever beam front
By the active force of magnet, the variable quantity of the central wavelength of fiber bragg grating increases, and waveform and wavelength show one
The form of kind jump.It is drifted about and is jumped according to fiber bragg grating central wavelength, the number of statistics wavelength jump is revolved with impeller
The accumulative revolution of the wing is directly proportional, calculates the relationship of outdegree and Water interaction, can calculate the size of fluid flow.
The embodiment of the present invention is measured using fiber grating sensing technology come flow, the flow velocity to water flow.Firstly, optical fiber
Grating sensing technique has higher reliability and validity, compared to conditional electronic formula sensor, fiber-optic grating sensor gram
Electromagnetic interference and actively powered limitation have been taken, has also had the characteristics that highly sensitive, anticorrosive, high temperature resistant, and fiber grating
Sensor it is small in size, at low cost, be suitble to be widely used in every field.Compared to the method using in optic fiber displacement sensor based on light-intensity test
Device, fiber-optic grating sensor will not be surveyed due to the frequency that the variable of detection is center wavelength because of the influence of fading of power
The change of quantitative change amount, measurement and transmission are more stable.The measurement that fiber grating sensing technology applies to water flow be can overcome the disadvantages that into biography
Water meter of uniting measures the deficiency of water device, but also is able to satisfy under more complex environments and remote real-time water measurement.
It is schematical, only a kind of logical function partition to the division of module in the above embodiment of the present invention, it is practical
There may be another division manner when realization, in addition, each functional module in each embodiment of the application can integrate one
In a processor, it is also possible to physically exist alone, can also be integrated in two or more modules in a module.It is above-mentioned
Integrated module both can take the form of hardware realization, can also be realized in the form of software function module.
The electronic equipment of the embodiment of the present invention exists in a variety of forms, including but not limited to:
(1) mobile communication equipment: the characteristics of this kind of equipment is that have mobile communication function, and to provide speech, data
Communication is main target.This Terminal Type includes: smart phone (such as iPhone), multimedia handset, functional mobile phone and low
Hold mobile phone etc..
(2) super mobile personal computer equipment: this kind of equipment belongs to the scope of personal computer, there is calculating and processing function
Can, generally also have mobile Internet access characteristic.This Terminal Type includes: PDA, MID and UMPC equipment etc., such as iPad.
(3) portable entertainment device: this kind of equipment can show and play multimedia content.Such equipment include: audio,
Video player (such as iPod), handheld device, e-book and intelligent toy and portable car-mounted navigation equipment.
(4) server: providing the equipment of the service of calculating, and the composition of server includes processor 1010, hard disk, memory, is
Bus of uniting etc., server is similar with general computer architecture, but due to needing to provide highly reliable service, is handling
Ability, stability, reliability, safety, scalability, manageability etc. are more demanding.
(5) other electronic devices with data interaction function.
The apparatus embodiments described above are merely exemplary, wherein module can be as illustrated by the separation member
Or may not be and be physically separated, the component shown as module may or may not be physical module, i.e.,
It can be located in one place, or may be distributed on multiple network modules.It can select according to the actual needs therein
Some or all of the modules achieves the purpose of the solution of this embodiment.Those of ordinary skill in the art are not paying creative labor
In the case where dynamic, it can understand and implement.
The embodiment of the present invention provides a kind of non-volatile computer readable storage medium storing program for executing, non-volatile computer readable storage
Media storage has program instruction, when electronic equipment executes program instructions, for execute the method in above method embodiment and
Step.
The embodiment of the invention provides a kind of computer program products, wherein computer program product is non-including being stored in
Computer program in transitory computer readable storage medium, computer program include program instruction, wherein when program instruction quilt
When electronic equipment executes, electronic equipment is made to execute the method in above-mentioned any means embodiment.
Each functional module in each embodiment of the present invention can integrate in one processing unit, be also possible to each
Module physically exists alone, and can also be integrated in one unit with two or more modules.Above-mentioned integrated unit both may be used
To use formal implementation of hardware, can also be realized in the form of hardware adds SFU software functional unit.
The above-mentioned integrated unit being realized in the form of SFU software functional unit can store and computer-readable deposit at one
In storage media.Above-mentioned SFU software functional unit is stored in a storage medium, including some instructions are used so that a computer
Device (can be personal computer, server or network equipment etc.) or intelligent terminal or processor (Processor)
Execute the part steps of each embodiment method of the present invention.And storage medium above-mentioned includes: USB flash disk, mobile hard disk, read-only storage
Device (Read-Only Memory, ROM), random access memory (Random Access Memory, RAM), magnetic disk or light
The various media that can store program code such as disk.
In above-described embodiment provided by the present invention, it should be understood that disclosed device and method can pass through it
Its mode is realized.For example, the apparatus embodiments described above are merely exemplary, for example, the division of module, only
A kind of logical function partition, there may be another division manner in actual implementation, for example, multiple module or components can combine or
Person is desirably integrated into another system, or some features can be ignored or not executed.
Module may or may not be physically separated as illustrated by the separation member, show as module
Component may or may not be physical module, it can and it is in one place, or may be distributed over multiple networks
On unit.Some or all of the modules therein can be selected to achieve the purpose of the solution of this embodiment according to the actual needs.
The above is only the embodiment of the present invention, are not intended to limit the scope of the patents of the invention, although with reference to the foregoing embodiments
Invention is explained in detail, still can be to aforementioned each specific reality for coming for those skilled in the art
It applies technical solution documented by mode to modify, or equivalence replacement is carried out to part of technical characteristic.It is all to utilize this
The equivalent structure that description of the invention and accompanying drawing content are done directly or indirectly is used in other related technical areas, similarly
Within the invention patent protection scope.
Claims (10)
1. a kind of water flow measuring device, including water inlet, water outlet, which is characterized in that the water flow measuring device also wraps
It includes:
Impeller is arranged between the water inlet and the water outlet, and the impeller includes multiple blades, in the multiple leaf
The end of at least one blade in piece is provided with the first magnet；
Cantilever beam, the cantilever beam are arranged above the impeller, and the cantilever beam has fixing end and free end, close to institute
The free end for stating cantilever beam is provided with the second magnet；
Fiber-optic grating sensor is set at the ontology of the cantilever beam；
Fiber grating demodulation device is connected by optical fiber with the fiber-optic grating sensor, is received and is demodulated from the optical fiber light
The real-time wavelength data of the optical signal of gate sensor；
Signal processing module calculates the size of the water flow and is presented according to the real-time wavelength data.
2. water flow measuring device according to claim 1, wherein at least one blade in the multiple blade
End is provided with the first magnet
The end of a blade in the multiple blade is provided with the first magnet.
3. water flow measuring device according to claim 1, wherein at least one blade in the multiple blade
End is provided with the first magnet
The end of equally distributed multiple blades is provided with multiple first magnet on the impeller.
4. water flow measuring device according to claim 1, wherein described device further includes shell, the water inlet and
The water outlet is respectively arranged at the shell close to the two sides of bottom；The impeller, the cantilever beam are all set in described outer
The inside of shell；The fixing end of the cantilever beam is fixed on the inner sidewall of the shell；The optical fiber passes through the shell side
Wall is connected to the fiber grating demodulation device of the shell exterior.
5. water flow measuring device according to claim 4, wherein the wheel disc of the impeller is in that vertical direction is placed
In the interior of shell, side blade faces the water inlet, and when water flow is flowed into from the water inlet, the impeller can
It is rotated under the promotion of the water flow.
6. water flow measuring device according to claim 1, wherein second magnet is corresponding with first magnet to be set
It sets, when first magnet turns to immediately below the cantilever beam with blade, second magnet is located at first magnet
Position directly above or near, enable the two generate magnetic force induction effect.
7. water flow measuring device according to claim 1, wherein the homopolarity of second magnet and first magnet
It is oppositely arranged.
8. water flow measuring device according to claim 1, wherein the water flow measuring device further includes wireless communication
Module, for the real-time wavelength data to be transferred to the signal processing module of distal end.
9. water flow measuring device according to claim 1, wherein the water flow measuring device further includes filter module
Block, for being filtered to the impurity in water flow before water flow enters the water inlet.
10. a kind of water flow measuring method is applied to the described in any item water flow measuring devices of claim 1-9,
It is characterized in that:
When water flow is flowed into from the water inlet, the impeller starts to rotate under the promotion of the water flow；
Receive and demodulate the optical signal of the fiber-optic grating sensor output；
According to the real-time wavelength data of the optical signal, calculates the size of the water flow and presented.
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| CN201910344836.6A CN110006495A (en) | 2019-04-26 | 2019-04-26 | A kind of water flow measuring device and method based on single impeller |
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| CN203519075U (en) * | 2013-10-24 | 2014-04-02 | 昆明理工大学 | Spoke-type fiber Bragg grating canal flow sensor |
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| CN106290973A (en) * | 2016-09-29 | 2017-01-04 | 国家电网公司 | A kind of optical fiber passive formula wind speed measuring device |
| KR20180052962A (en) * | 2016-11-11 | 2018-05-21 | 에스제이포토닉스 주식회사 | Measuring device using fiber bragg grating sensor |
| CN209706871U (en) * | 2019-04-26 | 2019-11-29 | 南京溯极源电子科技有限公司 | A kind of water flow measuring device based on single impeller |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203519075U (en) * | 2013-10-24 | 2014-04-02 | 昆明理工大学 | Spoke-type fiber Bragg grating canal flow sensor |
| CN104749395A (en) * | 2013-12-26 | 2015-07-01 | 国网江西省电力公司信息通信分公司 | Wind speed measuring probe, wind speed measuring system and wind speed measuring method |
| CN106290973A (en) * | 2016-09-29 | 2017-01-04 | 国家电网公司 | A kind of optical fiber passive formula wind speed measuring device |
| KR20180052962A (en) * | 2016-11-11 | 2018-05-21 | 에스제이포토닉스 주식회사 | Measuring device using fiber bragg grating sensor |
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