CN108375398A - A kind of electromagnetic flow meter signal conditioning device - Google Patents
A kind of electromagnetic flow meter signal conditioning device Download PDFInfo
- Publication number
- CN108375398A CN108375398A CN201810177567.4A CN201810177567A CN108375398A CN 108375398 A CN108375398 A CN 108375398A CN 201810177567 A CN201810177567 A CN 201810177567A CN 108375398 A CN108375398 A CN 108375398A
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- CN
- China
- Prior art keywords
- electrode
- hole
- electromagnetic flow
- flow meter
- loop coil
- 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.)
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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
- G01F1/56—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 electric or magnetic effects
- G01F1/58—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 electric or magnetic effects by electromagnetic flowmeters
- G01F1/588—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 electric or magnetic effects by electromagnetic flowmeters combined constructions of electrodes, coils or magnetic circuits, accessories therefor
-
- 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
- G01F1/56—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 electric or magnetic effects
- G01F1/58—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 electric or magnetic effects by electromagnetic flowmeters
- G01F1/584—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 electric or magnetic effects by electromagnetic flowmeters constructions of electrodes, accessories therefor
-
- 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
- G01F15/18—Supports or connecting means for meters
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- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- General Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Measuring Volume Flow (AREA)
Abstract
The invention discloses a kind of electromagnetic flow meter signal conditioning devices, including measurement pipe, loop coil, first electrode, second electrode, further include signal regulating panel, first electrode and second electrode are located at the left and right sides for measuring pipe through-hole, loop coil is the coil of horizontal annular coiling, positioned at the lower section for measuring pipe through-hole, measures and be disposed with signal regulating panel between pipe through-hole and loop coil.The present invention has the following advantages：1）Contact conductor is short, and surrounding electric field is avoided to interfere；2）Contact conductor is simple in structure, easy to manufacture；3）Realize that electrode is arranged vertically, signal accuracy is high.
Description
Technical field
A kind of electromagnetic flow meter signal conditioning device of the present invention, is related to electromagnetic flow measuring field, especially relates to
And the low power consumption flow rates fields of measurement such as the metering of heat death theory, water, Sewage metering.The present invention be suitable for calorimeter, cold meter, water meter,
Sewage table etc., principle and structure are also applied for other general fields for needing low power consumption flow rate to measure.
Background technology
Electromagnetic flow sensor is a kind of flow measuring device based on faraday electromagnetic induction principle.Its operation principle
It is：When the fluid with conducting medium passes through magnetic field, fluid cutting magnetic line, the vertical direction in magnetic field generates induced electricity
Gesture, since the flow velocity of induced potential size and fluid is directly proportional, by the intensity for measuring induced potential, you can to obtain fluid
Flow velocity.
Electromagnetic flow sensor is made of components such as measurement pipe, loop coil, electrodes, wherein there is through-hole in measurement pipe,
Through-hole section is generally circular in cross section or rectangle, the fluid containing conducting medium pass through through-hole with certain flow velocity.In order to measure through-hole
The speed of interior fluid is equipped with exciting loop coil around measurement pipe, and the coil of this circular wound is in external electrical
Under the excitation in source, generates and loop coil axle center magnetic field in the same direction, the magnetic line of force pass through the fluid in through-hole, generate sense in a fluid
Answer potential.Electrode is installed on induced potential positive and negative anodes position, measures the size of induced potential, so that it may to obtain the stream of fluid
Speed.The electromagnetic flowmeter manufactured with electromagnetic flow sensor, is widely used in flow measurement, has measurement accuracy
Height, the linearity are good, measurement pipe is interior without advantages such as structuring, antipollution objects.
The electromagnetic flow sensor of the prior art, it is generally the case that be to be mounted on exciting loop coil to measure
Around pipe, such as in measurement pipe upper and lower part, it is respectively horizontally mounted a loop coil or a loop coil and one
Magnetic core.The central axes of loop coil are located at upright position, and under the excitation of external power supply, measurement is vertically passed through in generated magnetic field
The through-hole of pipe generates induced potential in the fluid of through-hole.The signal-to-noise ratio of induced potential on electrode of electromagnetic flowmeter, and measure essence
Spend closely related, when signal-to-noise ratio improves, measurement accuracy also can be promoted accordingly.
The electromagnetic flow sensor signal condition part of the prior art, for the signal tune containing electrode signal modulate circuit
Plate to be managed, is placed in the outside of measurement pipe and loop coil under normal conditions, electrode signal accesses signal regulating panel by lead, due to
Distance is remote, signal is weak, be easy to cause electrode signal and is interfered by periphery electromagnetic environment, signal-to-noise ratio is caused to decline.
The section of the electromagnetic flow sensor of the prior art, through-hole is round or rectangle, when electrode is using vertical
When direction is arranged, the contact surface of electrode and medium in rectangular through-hole is vertical plane, due to the uneven distribution in magnetic field in through-hole,
The induced potential of electrode vertical plane each point has differences, and is easy to cause measurement error, and measurement accuracy is low.And circular through hole then causes
The distance between loop coil and through-hole are farther out so that excitation gap is larger, and excitation efficiency declines.
In order to further decrease the power consumption of electromagnetic flow sensor, realize electromagnetic type flow meter low-power consumption power supply or
Battery powered invents a kind of method improving electromagnetic flow sensor signal-to-noise ratio, to reduce the power consumption of electromagnetic type flow meter,
It is become more and more important in the flow measurements such as calorimeter, water meter.
The electromagnetic flow measuring device of the prior art has the following problems：
1) contact conductor is long, is easy to be interfered by surrounding electric field；
2) contact conductor is complicated, it is not easy to manufacture；
3) when electrode is arranged vertically, measuring signal precision is low.
Invention content
The purpose of the present invention is to provide a kind of electromagnetic flow meter signal conditioning devices, solve prior art electromagnetic flow
The problem of counting contact conductor length, being easy to be disturbed, especially solution electromagnetic type family the mount of using heat table, family water meter power consumption are big asks
Topic.
A kind of electromagnetic flow meter signal conditioning device, including measurement pipe, loop coil, first electrode, second electrode, into one
Step includes signal regulating panel, and first electrode and second electrode are located at the left and right sides for measuring pipe through-hole, and loop coil is water
The coil of flat circular wound is located at the lower section for measuring pipe through-hole, measures and is disposed with signal condition between pipe through-hole and loop coil
Plate.
The first electrode and second electrode extend separately down and signal regulating panel electrical connection.
The through-hole of the measurement pipe, bottom are horizontal linear, and width is less than the horizontal width in the middle part of through-hole.
The through-hole of the measurement pipe is oblong, and the left and right of the oblong is circular arc, is up and down horizontal linear.
The signal regulating panel is parallel to the coiling plane of loop coil.
The first electrode and second electrode are perpendicular to signal regulating panel.
Beneficial effects of the present invention：
The prior art, there are no signal regulating panel being mounted on and measures between pipe through-hole and loop coil, so as to shorten electrode and
The distance between signal regulating panel, the method for improving electrode signal signal-to-noise ratio.By the printed wiring board containing signal conditioning circuit
Mounted on measuring between pipe through-hole and loop coil, the length of contact conductor can be shortened to greatest extent, reduce surrounding electric field
Influence to electrode signal, to improve electrode signal signal-to-noise ratio.Meanwhile by the via design of measurement pipe be oblong, to
It realizes being arranged vertically for electrode, and improves excitation efficiency.
Compared with prior art, the present invention has the following advantages：
1）Contact conductor is short, and surrounding electric field is avoided to interfere；
2）Contact conductor is simple in structure, easy to manufacture；
3）Realize that electrode is arranged vertically, signal accuracy is high；
Any technical solution of the present invention, which differs, surely all realizes the above advantageous effect.
Description of the drawings
Fig. 1 is the sectional view for constituting electromagnetic flow meter signal conditioning device embodiment of the present invention；
In figure, measurement pipe 1, loop coil 2, first electrode 3a, second electrode 3b, signal regulating panel 4.
Specific implementation mode
Referring to Fig. 1, Fig. 1 is the sectional view of electromagnetic flow meter signal conditioning device embodiment of the present invention.Including measurement pipe 1,
Loop coil 2, first electrode 3a, second electrode 3b, signal regulating panel 4.
Referring to Fig. 1, first electrode 3a and second electrode 3b are located at the both sides of 1 through-hole of measurement pipe, and vertically downward and
Signal regulating panel 4 contacts, and realizes electrical connection.The top of first electrode 3a and second electrode 3b are in 1 through-hole of measurement pipe, Neng Goujie
The fluid media (medium) in through-hole is touched, to measure the induced potential of fluid generation.It is logical that signal regulating panel 4 lies in a horizontal plane in measurement pipe 1
Between hole and loop coil 2.Loop coil 2 be horizontal direction circular wound coil, be placed on 1 through-hole of measurement pipe just under
The axle center of side, annular is located at vertical direction.Loop coil 2 generates the magnetic of vertical direction under the excitation of external field power supply
, the magnetic line of force passes through the through-hole of measurement pipe 1, forms magnetic field in through-holes.
The vertical cross-section of the present embodiment, 1 through-hole of measurement pipe is oblong, and the left and right of oblong is arc-shaped, is up and down water
Flat line can also use approximate shape, and the wherein horizontal width in the middle part of through-hole is more than the width of bottom, for example, through-hole is adopted
With hexagon etc..Through-hole is the technology known to the professional person of this field using the technical solution of approximate shapes of the present invention, such
Situation is also in the protection domain of this patent.
The present embodiment, electrode is arranged using vertical direction, but embodiment is not limited in being arranged vertically.Tilt certain angle
The arrangement of degree has no effect on the overall structure and performance of the present invention.Electrode proximate is arranged vertically, and for this field, professional person is ripe
The technology known, such situation are also within the scope of the present invention.
The present embodiment, signal regulating panel 4 include signal conditioning circuit, but be loaded on signal regulating panel 4 it is various not
Same electronic component has no effect on the structure of the present invention.The various different electronic components that signal regulating panel 4 is loaded with, for this
Technology known to the professional person of field, such situation are also within the scope of the present invention.
The electromagnetic flow meter signal conditioning device of the present embodiment can further increase magnetic circuit component, in loop coil 2
The magnetizer in portion, the magnetizer etc. on measurement pipe top, increased various magnetic circuit components, are this field professional person on this basis
Known technology, such situation are also within the scope of the present invention.
The electromagnetic flow meter signal conditioning device of the present embodiment, it is such as that present apparatus mirror image, and/or any direction rotation is any
Angle has no effect on the fundamental characteristics of the present apparatus, is the technology known to the professional person of this field, such situation is also in the present invention
Protection domain in.
Disclosed above is only specific embodiments of the present invention, but the present invention is not limited to this, the skill of any this field
What art personnel can think variation, should all fall in protection scope of the present invention.
Claims (6)
1. a kind of electromagnetic flow meter signal conditioning device, including measurement pipe（1）, loop coil（2）, first electrode（3a）, second
Electrode（3b）, it is characterised in that：Further include signal regulating panel（4）, first electrode（3a）And second electrode（3b）Position respectively
In measurement pipe（1）The left and right sides of through-hole, loop coil（2）For the coil of horizontal annular coiling, it is located at measurement pipe（1）Through-hole
Lower section, measurement pipe（1）Through-hole and loop coil（2）Between be disposed with signal regulating panel（4）.
2. a kind of electromagnetic flow meter signal conditioning device as described in claim 1, it is characterised in that：The first electrode（3a）
And second electrode（3b）Extend separately down and signal regulating panel（4）Electrical connection.
3. a kind of electromagnetic flow meter signal conditioning device as described in claim 1, it is characterised in that：The measurement pipe（1）'s
Through-hole, bottom are horizontal linear, and width is less than the horizontal width in the middle part of through-hole.
4. a kind of electromagnetic flow meter signal conditioning device as described in claim 1, it is characterised in that：The measurement pipe（1）'s
Through-hole is oblong, and the left and right of the oblong is circular arc, is up and down horizontal linear.
5. a kind of electromagnetic flow meter signal conditioning device as described in claim 1, it is characterised in that：The signal regulating panel
（4）It is parallel to loop coil（2）Coiling plane.
6. a kind of electromagnetic flow meter signal conditioning device as described in claim 1, it is characterised in that：The first electrode（3a）
And second electrode（3b）Perpendicular to signal regulating panel（4）.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810177567.4A CN108375398A (en) | 2018-03-05 | 2018-03-05 | A kind of electromagnetic flow meter signal conditioning device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810177567.4A CN108375398A (en) | 2018-03-05 | 2018-03-05 | A kind of electromagnetic flow meter signal conditioning device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108375398A true CN108375398A (en) | 2018-08-07 |
Family
ID=63016817
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810177567.4A Pending CN108375398A (en) | 2018-03-05 | 2018-03-05 | A kind of electromagnetic flow meter signal conditioning device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108375398A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020107324A1 (en) * | 2018-11-29 | 2020-06-04 | 深圳市大疆创新科技有限公司 | Electromagnetic flowmeter and plant-protecting unmanned aerial vehicle having same |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007298398A (en) * | 2006-04-28 | 2007-11-15 | Aichi Tokei Denki Co Ltd | Electromagnetic flowmeter |
| CN103267552A (en) * | 2013-05-24 | 2013-08-28 | 杭州云谷科技有限公司 | Valve and electromagnetic flowmeter integrated device and application thereof |
| CN104101391A (en) * | 2013-04-08 | 2014-10-15 | Smc株式会社 | Electromagnetic flowmeter |
-
2018
- 2018-03-05 CN CN201810177567.4A patent/CN108375398A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007298398A (en) * | 2006-04-28 | 2007-11-15 | Aichi Tokei Denki Co Ltd | Electromagnetic flowmeter |
| CN104101391A (en) * | 2013-04-08 | 2014-10-15 | Smc株式会社 | Electromagnetic flowmeter |
| CN103267552A (en) * | 2013-05-24 | 2013-08-28 | 杭州云谷科技有限公司 | Valve and electromagnetic flowmeter integrated device and application thereof |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020107324A1 (en) * | 2018-11-29 | 2020-06-04 | 深圳市大疆创新科技有限公司 | Electromagnetic flowmeter and plant-protecting unmanned aerial vehicle having same |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20180807 |