CN110455353A - A kind of floating ball vortex street correlation optic flow sensor and its flow rate testing methods - Google Patents
A kind of floating ball vortex street correlation optic flow sensor and its flow rate testing methods Download PDFInfo
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- CN110455353A CN110455353A CN201910890222.8A CN201910890222A CN110455353A CN 110455353 A CN110455353 A CN 110455353A CN 201910890222 A CN201910890222 A CN 201910890222A CN 110455353 A CN110455353 A CN 110455353A
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- 238000007667 floating Methods 0.000 title claims abstract description 87
- 238000012360 testing method Methods 0.000 title claims abstract description 6
- 238000001514 detection method Methods 0.000 claims abstract description 46
- 239000012530 fluid Substances 0.000 claims abstract description 21
- 238000006243 chemical reaction Methods 0.000 claims abstract description 8
- 238000012545 processing Methods 0.000 claims abstract description 5
- 230000003287 optical effect Effects 0.000 claims description 25
- 239000013307 optical fiber Substances 0.000 claims description 23
- 239000000523 sample Substances 0.000 claims description 7
- 238000000034 method Methods 0.000 claims description 6
- 230000005484 gravity Effects 0.000 claims description 5
- 238000010276 construction Methods 0.000 claims description 3
- 239000011229 interlayer Substances 0.000 claims description 3
- 239000007788 liquid Substances 0.000 claims description 3
- 230000005622 photoelectricity Effects 0.000 claims description 3
- 210000000664 rectum Anatomy 0.000 claims description 3
- 230000003068 static effect Effects 0.000 claims description 3
- 239000000835 fiber Substances 0.000 claims description 2
- 238000013461 design Methods 0.000 abstract description 4
- 230000008859 change Effects 0.000 abstract description 3
- 230000035945 sensitivity Effects 0.000 abstract description 2
- 238000011161 development Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 238000009776 industrial production Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 1
- 230000037237 body shape Effects 0.000 description 1
- 238000003745 diagnosis Methods 0.000 description 1
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- 230000005611 electricity Effects 0.000 description 1
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- 230000007613 environmental effect Effects 0.000 description 1
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Classifications
-
- 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
- G01F1/20—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 by detection of dynamic effects of the flow
- G01F1/32—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 by detection of dynamic effects of the flow using swirl flowmeters
- G01F1/325—Means for detecting quantities used as proxy variables for swirl
Abstract
The present invention provides a kind of floating ball vortex street correlation optic flow sensor and its flow rate testing methods, the sensor has lesser structure, higher accuracy and reliability, well adapting to property and interchangeability etc., the sensor can be suitably used for numerous fluid flow detection occasions, swirl generating body is combined with photoelectric sensing principle to the and is applied to field of flow detection, output signal output valve after photoelectric conversion and signal processing calculate will change at double, referring now to traditional dynamometry mode, raising detection sensitivity that can be fairly obvious, with highly important practical application value, great impetus is played to the design and popularization of novel flow rate sensor.Belong to field of flow detection.
Description
Technical field
The present invention relates to a kind of floating ball vortex street correlation optic flow sensor and its detection methods, belong to flow detection neck
Domain.
Background technique
During modern industrial production especially automated production, it is often required to that production is monitored and controlled with various sensors
Parameters in the process make equipment work in normal condition or optimum state, and product are made to reach best quality.Sensor
Also such as industrial production, space development, hydrospace detection, environmental protection, resource investigation, medical diagnosis, biological work are penetrated into already
The extremely general field of journey, even historical relic's protection etc..The present invention is one of sensor --- the flow sensor of numerous classifications.
With the development of sensor technology, diversified flow sensor is had already appeared at present, it is most common to have vane type, vortex street
Formula, toll bar vortex, hot-wire etc..But the sensors such as vane type, eddy currents, toll bar vortex, hot-wire, principle
Traditional dynamometry mode is mostly used, possesses the limitations such as measurement accuracy is not high, energy consumption is big, cannot win well in many occasions
Appoint.
Summary of the invention
The present invention provides a kind of floating ball vortex street correlation optic flow sensor, is mostly used with solving existing flow sensor
Traditional dynamometry mode possesses the limitations such as measurement accuracy is not high, energy consumption is big, and what cannot be competent at well in many occasions asks
Topic.
To solve the above problems, such a floating ball vortex street correlation optic flow sensor of proposed adoption, including sensor
Probe, photoelectric converter and signal processor, sensor probe include shell and the swirl generating body that is set in shell, shell
For the tubular construction of both ends open, swirl generating body is cylindrical structure, and swirl generating body is perpendicularly fixed in shell, vortex hair
Cavity is offered in raw body, the upper and lower ends of cavity pass through symmetrically arranged upper pressure guide hole respectively and lower pressure guide hole is connected to vortex
The outside of generating body, the upper pressure guide hole and lower pressure guide hole are each perpendicular to shell and the axial direction of swirl generating body opens up, in cavity
It is provided with floating block, floating block is hung on the swirl generating body on top by drawstring, right on the swirl generating body of floating block opposite sides
Detection hole should be offered, and is respectively arranged with the incident optical being mutually directed toward and reception optical fiber, detection hole in the detection hole of two sides
Aperture at be provided with the sealed light-transmitting interlayers of closed orifices, the other end of incident optical is set at light source to be coupled into
Light is penetrated, the other end of reception optical fiber is connected with photoelectric converter, and photoelectric converter is connected with signal processor.
In aforementioned flow sensor, under drawstring straight condition, floating block and detection hole flush, floating block just block at least one
A detection hole, the optical signal that optical fiber issues so that side is entered an association can not be received by the reception optical fiber of the other side.
In aforementioned flow sensor, gravity that floating block is subject to is equal with floating block buoyancy suffered in testing liquid or ten
Split-phase is close, to avoid floating block because the influence of self gravity does not float up and down when by fluid impact.
In aforementioned flow sensor, the floating block is hollow rectangular parallelepiped structure, and the both ends of floating block are located in the cavity
Place vertically offers guide groove, and the both ends of floating block are vertically slideably positioned in guide groove.
In aforementioned flow sensor, the upper pressure guide hole of two sides and the shape and size phase of lower pressure guide hole above and below swirl generating body
Together, and the upper end of upper pressure guide hole to distance and the lower end of lower pressure guide hole of shell upper inside walls to shell on the downside of phase at a distance from inner wall
Together.
The present invention also provides a kind of floating ball vortex street correlation fiber optic flow detection method, this method is in the shell of tubular
The swirl generating body of stationary cylinder shape, and the two is vertically arranged, and floating block is arranged in the cavity of swirl generating body, floating block passes through drawing
Rope is hung on the swirl generating body on top, and correspondence offers detection hole on the swirl generating body of floating block opposite sides, side
Setting incident optical and the reception optical fiber being arranged into the detection hole of the other side issue optical signal in detection hole, and reception optical fiber receives
Optical signal is simultaneously transmitted to signal processor after photoelectric conversion, when fluid does not flow inside the shell, the static floating of floating block, when
It can be generated in swirl generating body downstream when thering is fluid to flow in shell, when fluid flows around swirl generating body asymmetric
, it is regular alternately vortex column, the regular floating of floating block and sinking can be made, to floating block float space be defined, make
It obtains floating block to float or regular can appear alternatively between two detection holes when sinking, so that reception optical fiber be made regularly to go out
The case where not receiving optical signal now can be derived that frequency f by the data processing of signal processor, which is vortex
The frequency f that vortex occurs after generating body:
V: swirl generating body two sides mean flow rate, m/s；
St: Strouhal number, for cylindrical generating body, which is approximately equal to 0.2；
M: the ratio between swirl generating body two sides bow-shaped area and conduit cross-sectional area:
D: swirl generating body heads on width；
D: table body latus rectum；
Pipeline inner volume flow θvAre as follows:
It enablesKnow θv=kf
K: the meter parameter of flow sensor, each flow sensor are a computable fixed value；
Vortex occurrence frequency f is detected by signal processor, can calculate the volume flow θ of fluidv。
Compared with prior art, the present invention is by structure design, theoretical research and experimental analysis it is found that the sensor has
Lesser structure, higher accuracy and reliability, well adapting to property and interchangeability etc., which can be suitably used for numerous streams
Swirl generating body is combined with photoelectric sensing principle the and is applied to field of flow detection, output signal by body flow detection occasion
Output valve will change at double after photoelectric conversion and signal processing calculate, can be very referring now to traditional dynamometry mode
It is apparent to improve detection sensitivity, there is highly important practical application value, design and popularization to novel flow rate sensor
Play great impetus.
Detailed description of the invention
Fig. 1 is structural schematic diagram of the invention；
Fig. 2 is the top view of sensor probe in Fig. 1；
Fig. 3 is the schematic diagram of the section structure of swirl generating body in Fig. 1；
Fig. 4 is the top view of swirl generating body transversely section at floating block in Fig. 1.
Specific embodiment
To make the object, technical solutions and advantages of the present invention clearer, the present invention is made into one below in conjunction with attached drawing
The detailed description of step, it should be understood that described herein specific examples are only used to explain the present invention, is not used to limit this hair
It is bright.
Embodiment
Referring to figs. 1 to Fig. 4, the present embodiment provides a kind of floating ball vortex street correlation optic flow sensors, including sensor
Probe 1, photoelectric converter 2 and signal processor 3, sensor probe 1 include shell 11 and the vortex being set in shell 11 hair
Raw body 12, shell 11 are the tubular construction of both ends open, and swirl generating body 12 is cylindrical structure, and swirl generating body 12 is vertically solid
Due in shell 11, offering cavity 13 in swirl generating body 12, the upper and lower ends of cavity 13 pass through on symmetrically arranged respectively
Pressure guide hole 14 and lower pressure guide hole 15 are connected to the outside of swirl generating body 12, and the upper pressure guide hole 14 and lower pressure guide hole 15 are vertical
It is opened up in the axial direction of shell 11 and swirl generating body 12, the upper pressure guide hole 14 and lower pressure guide hole 15 of about 12 two sides of swirl generating body
Shape and size it is identical, and the upper end of upper pressure guide hole 14 to 11 upper inside walls of shell distance and lower pressure guide hole 15 lower end extremely
The distance of 11 downside inner wall of shell is identical, and floating block 16 is provided in cavity 13, and floating block 16 is opaque or semi-transparent hollow length
Cube structure, the cavity 13 is interior vertically to offer guide groove 22 at the both ends of floating block 16, and the both ends of floating block 16 are along perpendicular
To being slideably positioned in guide groove 22, the gravity that floating block 16 is subject to is equal with the buoyancy suffered in testing liquid of floating block 16 or ten
Split-phase is close, and to avoid floating block 16 because the influence of self gravity does not float up and down when by fluid impact, floating block 16 passes through
Drawstring 21 is hung on the swirl generating body 12 on top, and correspondence offers detection on the swirl generating body 12 of 16 opposite sides of floating block
Hole 18, and the incident optical 17 being mutually directed toward and reception optical fiber 19 are respectively arranged in the detection hole 18 of two sides, drawstring 21 is straightened
Under state, floating block 16 and 18 flush of detection hole, floating block 16 just blocks at least one detection hole 18, or blocks part detection hole
18, the optical signal that optical fiber 17 issues so that side is entered an association can not be received by the reception optical fiber 19 of the other side, or the letter received
Number weaken, the sealed light-transmitting interlayer 20 of closed orifices is provided at the aperture of detection hole 18, enters detection hole to avoid fluid
In 18, the other end of incident optical 17 is set at light source 4 to couple incident light, and the other end and photoelectricity of reception optical fiber 19 turn
Parallel operation 2 is connected, and photoelectric converter 2 is connected with signal processor 3.
The principle is as follows:
Since 12 upper and lower ends of cylinder swirl generating body offer pressure guide hole, alternately lift can be generated when vortex occurs will
Fluid is generated by pressure guide hole flowing and is sucked on one side, the effect blown out on one side.
1. 16 meeting of floating body when upper pressure guide hole 14 sucks fluid, when lower pressure guide hole 15 blows out fluid, in swirl generating body 12
By downward Fluid pressure, floating body 16 is moved downward, but is provided with drawstring 21 on floating ball, the maximum that floating block 16 moves downward
Displacement is state when drawstring 21 is straightened, and the design of this limitation 16 move distance of floating block can be such that detection accuracy improves,
Prevent because vortex occurrence frequency is excessive, floating block 16 fail to move to 18 flush of detection hole or approximate concordant position without
It can trigger signal.
When floating block 16 moves down, the light that incident optical issues can be blocked by floating block 16 can not be irradiated to connecing for opposite side
It receives at optical fiber 192, the optical signal that reception optical fiber 192 can not receive optical signal or receive dies down (partial occlusion), passes through light
After electricity conversion, it is primary that signal processor 3 can detect that floating block 16 has passed through echo area.
2. pressure guide hole 15 sucks fluid instantly, 16 stress of floating block is moved up, and keeps floating block 16 and detection hole 18 interleaved, at this time
The light that incident optical issues will not be blocked by floating block 16, and reception optical fiber 192 receives optical signal and is transmitted to after photoelectric conversion
Signal processor 3, the distance between the upper end of cavity 13 and detection hole 18 should not be too large, and limitation floating block 16 moves upwards as far as possible
Maximum displacement can be rapidly introduced into the position with 18 flush of detection hole when moving down convenient for floating block 16, pass through signal processor 3
Receive strong and weak variation you can get it change frequency, i.e., the frequency that vortex described below occurs of signal.
The method for carrying out flow detection using floating ball vortex street reflection type optical fiber flow sensor is as follows:
This method is the swirl generating body 12 of the stationary cylinder shape in the shell 11 of tubular, and the two is vertically arranged, rotation
Floating block 16 is set in the cavity 13 of whirlpool generating body 12, and floating block 16 is hung on the swirl generating body 12 on top by drawstring 21, is floated
It is corresponding on the swirl generating body 12 of 16 opposite sides of block to offer detection hole 18, incident optical 17 is set in the detection hole 18 of side
And the reception optical fiber 19 being arranged into the detection hole of the other side 18 issues optical signal, reception optical fiber 19 receives optical signal and through photoelectricity
Signal processor 3 is transmitted to after conversion, when fluid does not flow in shell 11, the static floating of floating block 16, when in shell 11
When thering is fluid to flow, fluid around swirl generating body 12 flow when can swirl generating body downstream generate it is asymmetric, have
The alternating vortex column of rule, can make the regular floating of floating block 16 and sinking, and the space floated to floating block 16 is defined, so that
Floating block 16 floats or regular can appear alternatively between two detection holes 18 when sinking, to keep reception optical fiber 19 regular
There is the case where not receiving optical signal in ground, can be derived that frequency f by the data processing of signal processor 3, which is
The frequency f occurred for vortex after swirl generating body 12:
V: swirl generating body two sides mean flow rate, m/s；
St: Strouhal number, for cylindrical generating body, which is approximately equal to 0.2；
M: the ratio between swirl generating body two sides bow-shaped area and conduit cross-sectional area:
D: swirl generating body heads on width；
D: table body latus rectum；
Pipeline inner volume flow θvAre as follows:
It enablesKnow θv=kf
K: the meter parameter of flow sensor, each flow sensor are a computable fixed value；
Vortex occurrence frequency f is detected by signal processor 3, can calculate the volume flow θ of fluidv。
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Made any modifications, equivalent replacements, and improvements etc., should all be included in the protection scope of the present invention within mind and principle.
Claims (6)
1. a kind of floating ball vortex street correlation optic flow sensor, it is characterised in that: including sensor probe (1), photoelectric conversion
Device (2) and signal processor (3), sensor probe (1) include shell (11) and the swirl generating body that is set in shell (11)
(12), shell (11) is the tubular construction of both ends open, and swirl generating body (12) is cylindrical structure, and swirl generating body (12) hangs down
It is directly fixed in shell (11), is offered cavity (13) in swirl generating body (12), the upper and lower ends of cavity (13) pass through respectively
Symmetrically arranged upper pressure guide hole (14) and lower pressure guide hole (15) are connected to the outside of swirl generating body (12), the upper pressure guide hole
(14) and lower pressure guide hole (15) is each perpendicular to shell (11) and the axial direction of swirl generating body (12) opens up, and is provided in cavity (13)
Floating block (16), floating block (16) are hung on the swirl generating body (12) on top by drawstring (21), floating block (16) opposite sides
Correspondence offers detection hole (18) on swirl generating body (12), and is respectively arranged in the detection hole (18) of two sides and is mutually directed toward
Incident optical (17) and reception optical fiber (19) are provided with the sealed light-transmitting interlayer of closed orifices at the aperture of detection hole (18)
(20), the other end of incident optical (17) is set at light source (4) to couple incident light, the other end of reception optical fiber (19) with
Photoelectric converter (2) is connected, and photoelectric converter (2) is connected with signal processor (3).
2. a kind of floating ball vortex street correlation optic flow sensor according to claim 1, it is characterised in that: drawstring (21) is drawn
Under straight state, floating block (16) and detection hole (18) flush.
3. a kind of floating ball vortex street correlation optic flow sensor according to claim 1, it is characterised in that: floating block (16) by
The gravity arrived is equal with floating block (16) buoyancy suffered in testing liquid.
4. a kind of floating ball vortex street correlation optic flow sensor according to claim 1, it is characterised in that: the floating block
(16) it is hollow rectangular parallelepiped structure, vertically offers guide groove at the both ends of floating block (16) in the cavity (13)
(22), the both ends of floating block (16) are vertically slideably positioned in guide groove (22).
5. a kind of floating ball vortex street correlation optic flow sensor according to claim 1, it is characterised in that: swirl generating body
(12) the upper pressure guide hole (14) of two sides is identical with the shape and size of lower pressure guide hole (15) up and down, and the upper end of upper pressure guide hole (14)
Distance to shell (11) upper inside walls is identical at a distance from inner wall on the downside of the lower end of lower pressure guide hole (15) to shell (11).
6. a kind of floating ball vortex street correlation fiber optic flow detection method, it is characterised in that: this method is the shell (11) in tubular
The swirl generating body (12) of interior stationary cylinder shape, and the two is vertically arranged, setting in the cavity (13) of swirl generating body (12)
Floating block (16), floating block (16) are hung on the swirl generating body (12) on top by drawstring (21), floating block (16) opposite sides
Correspondence offers detection hole (18) on swirl generating body (12), setting incident optical (17) and to another in the detection hole (18) of side
The reception optical fiber (19) being arranged in the detection hole (18) of side issues optical signal, and reception optical fiber (19) receives optical signal and through photoelectricity
Signal processor (3) are transmitted to after conversion, when shell (11) interior fluid does not flow, floating block (16) static floating, when outer
When thering is fluid to flow in shell (11), it can be generated not in swirl generating body downstream when fluid flows around swirl generating body (12)
Symmetrically, regular alternately vortex column, can make the regular floating of floating block (16) and sinking, the space floated to floating block (16)
It is defined, so that floating block (16) floats or regular can appear alternatively between two detection holes (18) when sinking, thus
So that reception optical fiber (19) the case where not receiving optical signal is regularly occurred, passes through the data processing energy of signal processor (3)
Enough obtain frequency f, which is swirl generating body (12) the frequency f that vortex occurs afterwards:
V: swirl generating body two sides mean flow rate, m/s；
St: Strouhal number, for cylindrical generating body, which is approximately equal to 0.2；
M: the ratio between swirl generating body two sides bow-shaped area and conduit cross-sectional area:
D: swirl generating body heads on width；
D: table body latus rectum；
Pipeline inner volume flow θvAre as follows:
It enablesKnow θv=kf
K: the meter parameter of flow sensor, the k value of each flow sensor are a computable definite values；
Vortex occurrence frequency f is detected by signal processor (3), can calculate the volume flow θ of fluidv。
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910890222.8A CN110455353A (en) | 2019-09-20 | 2019-09-20 | A kind of floating ball vortex street correlation optic flow sensor and its flow rate testing methods |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910890222.8A CN110455353A (en) | 2019-09-20 | 2019-09-20 | A kind of floating ball vortex street correlation optic flow sensor and its flow rate testing methods |
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Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4472022A (en) * | 1981-05-14 | 1984-09-18 | Itt Industries, Inc. | Vortex flowmeter |
| CN2074009U (en) * | 1990-04-18 | 1991-03-27 | 江苏省扬中县自动化仪表厂 | Inserted type optical fiber turbine flowmeter |
| CN2136975Y (en) * | 1992-06-20 | 1993-06-23 | 天津市自动化仪表三厂 | Sensor for vortex street flow |
| JPH06258105A (en) * | 1993-03-04 | 1994-09-16 | Yokogawa Electric Corp | Vortex flowrate meter |
| JPH07260529A (en) * | 1994-03-17 | 1995-10-13 | Ee D:Kk | Vortex generating converter in vortex type flowmeter |
| CN1168467A (en) * | 1997-04-15 | 1997-12-24 | 哈尔滨恒新实业发展有限责任公司 | Vertex street type fluid flow measuring method and device |
| CN102768048A (en) * | 2012-07-18 | 2012-11-07 | 昆明理工大学 | Fiber Bragg grating vortex shedding flow meter based on triangular prism-shaped vortex-forming body and using method thereof |
| CN108680208A (en) * | 2018-05-18 | 2018-10-19 | 金卡智能集团股份有限公司 | A kind of hot type flux of vortex street metering device, flowmeter and its flow-measuring method |
| CN109030866A (en) * | 2018-10-09 | 2018-12-18 | 贵阳学院 | A kind of pendulum model optical fiber acceleration transducer and its application method |
| CN210321841U (en) * | 2019-09-20 | 2020-04-14 | 贵阳学院 | Floating ball vortex street correlation type optical fiber flow sensor |
-
2019
- 2019-09-20 CN CN201910890222.8A patent/CN110455353A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4472022A (en) * | 1981-05-14 | 1984-09-18 | Itt Industries, Inc. | Vortex flowmeter |
| CN2074009U (en) * | 1990-04-18 | 1991-03-27 | 江苏省扬中县自动化仪表厂 | Inserted type optical fiber turbine flowmeter |
| CN2136975Y (en) * | 1992-06-20 | 1993-06-23 | 天津市自动化仪表三厂 | Sensor for vortex street flow |
| JPH06258105A (en) * | 1993-03-04 | 1994-09-16 | Yokogawa Electric Corp | Vortex flowrate meter |
| JPH07260529A (en) * | 1994-03-17 | 1995-10-13 | Ee D:Kk | Vortex generating converter in vortex type flowmeter |
| CN1168467A (en) * | 1997-04-15 | 1997-12-24 | 哈尔滨恒新实业发展有限责任公司 | Vertex street type fluid flow measuring method and device |
| CN102768048A (en) * | 2012-07-18 | 2012-11-07 | 昆明理工大学 | Fiber Bragg grating vortex shedding flow meter based on triangular prism-shaped vortex-forming body and using method thereof |
| CN108680208A (en) * | 2018-05-18 | 2018-10-19 | 金卡智能集团股份有限公司 | A kind of hot type flux of vortex street metering device, flowmeter and its flow-measuring method |
| CN109030866A (en) * | 2018-10-09 | 2018-12-18 | 贵阳学院 | A kind of pendulum model optical fiber acceleration transducer and its application method |
| CN210321841U (en) * | 2019-09-20 | 2020-04-14 | 贵阳学院 | Floating ball vortex street correlation type optical fiber flow sensor |
Non-Patent Citations (4)
| Title |
|---|
| WENJIAN YANG: "Flow velocity monitoring based on floating fibre ring vortex sensor", 《2015 OPTOELECTRONICS GLOBAL CONFERENCE (OGC)》, 30 November 2015 (2015-11-30) * |
| 夏士智 , 须龙涛: "涡街式流量计", 华中科技大学学报(自然科学版), no. 01, 30 January 1976 (1976-01-30) * |
| 薛俊华: "基于涡街发生体的光纤Bragg光栅流量计的研究", 《中国优秀硕士学位论文全文数据库 信息科技辑》, no. 02, 15 February 2014 (2014-02-15) * |
| 饶上荣, 孙延祚, 莫德举: "悬浮陀螺式流量传感器的研究", 电子仪器仪表用户, no. 04, 15 July 1997 (1997-07-15) * |
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