CN101034000A - Electromagnetic resonant cylinder quality sensor - Google Patents
Electromagnetic resonant cylinder quality sensor Download PDFInfo
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- CN101034000A CN101034000A CN 200710008740 CN200710008740A CN101034000A CN 101034000 A CN101034000 A CN 101034000A CN 200710008740 CN200710008740 CN 200710008740 CN 200710008740 A CN200710008740 A CN 200710008740A CN 101034000 A CN101034000 A CN 101034000A
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- measuring
- exciting
- collar
- quality sensor
- canister
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Abstract
This invention relates to a electromagnetic type resonance canister quality sensor, refer a kind of quality sensor. The invention set measuring canister, reference canister and bed. Measuring canister and reference canister locate on bed; Measuring canister set up measuring vibrating canister, measuring lantern ring, measuring excitation shock and picking shock component, measuring boot, measuring connector. measuring vibrate canister met measuring lantern ring, measuring boot met measuring lantern ring, measuring excitation shock and picking shock component fixed in column inside and fit in measuring vibrate canister intracavity; measuring excitation shock and picking shock cellular pole via wire to met measuring connector; reference canister set up reference vibrate canister, reference lantern ring, reference shock excitation and picking shock component, reference boot and reference connector; reference vibrate canister met reference lantern ring, reference boot met reference lantern ring;reference shock excitation and picking shock components fixed in column inside and fit in reference vibrate canister's intracavity, reference shock excitation and picking shock's cellular pole via wire met reference connector.
Description
Technical field
The present invention relates to a kind of mass sensor, particularly relate to a kind of harmonic oscillation cartridge quality sensing that adopts electromagnetic type.
Background technology
The measurement of quality is a kind of important work, existing many relevant product and reports.
NGK Insulators Ltd provides a kind of mass sensor in the application for a patent for invention of publication number for CN1243573, the at least a portion at least one sheet surface of a vane is provided with a piezoelectric element, a side of at least one sheet diaphragm links to each other with a side of vane, make the sheet Surface Vertical of diaphragm in the sheet surface of vane, the another side of vane links to each other with a sensor base, and vane, diaphragm and piezoelectric element are formed a resonance part.
NGK Insulators Ltd provides a kind of mass sensor in the application for a patent for invention of publication number for CN1250156, comprising: one connects flat board, has one or more otch and/or open region on it, and/or have thin-wall regions and thick wall area on it; A diaphragm, the side be connected flat board and be connected with each other; A sensing flat board provides piezoelectric element at least one lip-deep at least a portion of sensing flat board, is being connected with each other with the phase the other side who is connected flat board with diaphragm and the side that is connected sensing flat board on the vertical direction of dull and stereotyped closure; A sensor substrate links to each other with at least a portion of the side that is connected flat board and sensing flat board; Wherein diaphragm connects flat board, the dull and stereotyped and piezoelectric element formation resonance region of sensing.
NGK Insulators Ltd provides a kind of double-headed mass sensor in the application for a patent for invention of publication number for CN1253621, one first brace links to each other with a primary diaphragm at the side of correspondence, one second brace links to each other with a secondary diaphragm at the side of correspondence, at least link to each other with a sensor base plate on the part of first brace and the side of second brace with a resonance portion between second brace along being connected across first brace with the vertical direction of each brace and the closure of each diaphragm, resonance portion comprises first brace, second brace, primary diaphragm, secondary diaphragm and one first vane and be arranged on a major component at least one plane surface of first vane.
Anhui Inst. of Optics and Fine Mechanics, Chinese Academy of Sciences provides a kind of mass sensor based on the elastic qualities system in the application for a patent for invention of publication number for CN1755361, the awl bottom of a hollow conical pipe is fixed on the framework, a filter membrane is fixed at the awl tip, and the neck both sides of its tapered tube are equipped with two blocks of magnet steel.
As everyone knows, the vibration cylinder sensor originates from Britain the earliest, is used for measuring fluid pressure and density.It is to utilize the eigentone of vibrating barrel to measure, and under the effect of exciting force, vibrating barrel is with the vibration of its eigentone, and when being changed by measuring pressure or density, the stress of vibrating barrel changes thereupon, and its resonant frequency also can change.Detecting element detects output with the vibration frequency of vibrating barrel.Yet there are no at present the report that relevant vibration cylinder sensor is used to measure quality both at home and abroad.
Summary of the invention
The object of the present invention is to provide a kind of sensor that adopts the measurement quality of electromagnetic resonant cylinder.
The present invention is provided with measuring cylinder, reference tube and base, and measuring cylinder and reference tube are located on the base.
Measuring cylinder is provided with the measuring vibrations tube, measures the collar, measures exciting and Vibration pickup, measuring and protecting cover, measures binding post, and the measuring vibrations tube is fixedly connected with measuring the collar, and the measuring and protecting cover is connected with the measurement collar; Measure exciting and Vibration pickup and be fixed in the cylinder,, in the inner chamber of measuring vibrations tube, measure exciting and be connected with the measurement binding post by lead with the electrode of Vibration pickup as an integral installation, measure binding post and measuring unit environmental protection and hold insulation.Measuring exciting and pick-up element is used for the measuring vibrations excitation and detects the electromagnetic component that measurement exciting and pick-up element constitute for iron core and coil by soft magnet material.
Reference tube is provided with reference to vibrating barrel, with reference to the collar, with reference to exciting and Vibration pickup, with reference to protective cover and reference terminal, with reference to vibrating barrel be fixedly connected with reference to the collar, with reference to protective cover be connected with reference to the collar; Be fixed in the cylinder with reference to exciting and Vibration pickup, as an integral installation in the inner chamber of reference vibrating barrel, with reference to the electrode of exciting and Vibration pickup by lead and reference terminal sub-connection, reference terminal with keep insulation with reference to the collar.Being used for reference to vibrational excitation and detection with reference to exciting and Vibration pickup, is the electromagnetic component that iron core and coil by soft magnet material consist of with reference to exciting and Vibration pickup.
The measuring vibrations tube preferably is fixedly connected with Type of Welding with measuring the collar, and the measuring and protecting cover preferably is connected with thread forms with the measurement collar, prevents that the measuring vibrations tube is impaired because of external factor.Measure exciting and Vibration pickup by epoxy resin fixedly frame and flange be fixed together, the measurement exciting is connected with the measurement binding post with the soldering form with the coil of Vibration pickup, with epoxy resin binding post and measuring unit environmental protection is held insulation.With reference to vibrating barrel with preferably be fixedly connected with Type of Welding with reference to the collar, with reference to protective cover with preferably be connected with thread forms with reference to the collar, prevent with reference to vibrating barrel impaired because of external factor.With reference to exciting and Vibration pickup by epoxy resin fixedly frame and flange be fixed together, with reference to the coil of exciting and Vibration pickup with soldering form and reference terminal sub-connection, with epoxy resin with binding post with keep insulation with reference to the collar.
Can establish blow vent on the measuring vibrations tube, the measuring vibrations tube inner chamber is communicated with outside atmosphere through blow vent, can establish blow vent on the reference vibrating barrel, is communicated with outside atmosphere through blow vent with reference to the vibrating barrel inner chamber.
During use, adsorbed film or measured matter can be attached on the outer surface of measuring vibrations tube work wall by modes such as coating, plating, sputters, particular location can according to circumstances be attached to upper, middle and lower section or all surfaces of measuring vibrations tube work wall.The shape of adsorption film can be one or several ring-type, also can be one or several bulk.Whole measuring vibrations tube is fixed by screws on the base.
Measuring cylinder one side on base is established reference tube, its objective is in order to compensate the impact of the factors such as surrounding environment, improves certainty of measurement and anti-interference, forms the mass sensor of measuring with reference to two vibrating barrel structures, and reference tube is screwed on base.
When measuring, take off the protective cover of measuring cylinder and reference tube, adsorbed film or measured matter are attached directly on the outer surface of measuring vibrations tube work wall.By detecting the resonant frequency signal of measuring vibrations tube, measure quality and the viscoelastic dynamic characteristics of material.
The present invention improves on the basis of known vibration cylinder pressure transducer.Electromagnetic resonant cylinder quality sensor still adopts cantilever mounted formula vibrating barrel, and the adsorbed film that adsorbs measured matter is attached on the outer surface of measuring vibrations tube work wall, perhaps measured matter is attached directly on the surface of measuring vibrations tube work wall.The element of the measurement excited vibration that iron core and coil consist of and detection vibration, be cylindric with epoxy resin cure together, exciting position of components correspondence is at the stress maximum position of measuring vibrations tube, the electromagnetic force that produces after the energising of exciting element makes the vibration of measuring vibrations tube, by vibrating barrel and Vibration pickup coupling, Vibration pickup detects the frequency of measuring vibrations tube, forms a positive-feedback circuit through amplifier, and the measuring vibrations tube is operated on the resonant frequency.
When the quality of measurement of species, after adsorption film has adsorbed measured matter (or vibrating measured matter on the tube surface attachment), the resonance frequency of measuring vibrations tube changes, so can measure the quality size of adsorption film absorption by detecting the change of resonance frequency amount of measuring vibrations tube.
Because the resonant frequency of measuring vibrations tube except outside the Pass having with adsorbed film, also is subjected to the factor affecting such as surrounding medium, environment, so the present invention increased the impact that a reference tube is used for compensating the factors such as surrounding environment, improves certainty of measurement and anti-interference.The reference vibrating barrel surface of reference tube does not have adsorbed film, non-cohesive measured matter yet.
Description of drawings
Fig. 1 is the structural representation of the embodiment of the invention 1.
Fig. 2 is the vertical view of Fig. 1.
Fig. 3 is located at the synoptic diagram of measuring vibrations tube outer tube wall for adsorption film or measured matter.In Fig. 3, a is the top of measuring vibrations tube work wall, and b is the middle part of measuring vibrations tube work wall, and c is the bottom of measuring vibrations tube work wall, and d is the whole of measuring vibrations tube work wall.
Embodiment
Shown in Fig. 1～3, the present invention is provided with measuring cylinder A, reference tube B and base 6, and measuring cylinder A and reference tube B are located on the base 6.Measuring cylinder A is made up of with Vibration pickup 7 and measurement binding post 3 measuring vibrations tube 8, the measurement collar 10, measuring and protecting cover 9, cylindrical ring epoxy resins fixed mount 2, flange 5, measurement exciting, and measuring vibrations tube 8 inner chambers are communicated with outside atmosphere through blow vent 4.Measuring vibrations tube 8 with measure the collar 10 and fixedly connected with Type of Welding, measure protective cover 9 and the measurement collar 10 and be connected with thread forms, prevent that the measuring vibrations tube is impaired because of external factor.Measure exciting and Vibration pickup 7, be fixed together with cylindrical ring epoxy resins fixed mount 2 and flange 5, winding wire is connected with measurement binding post 3 with the soldering form, with epoxy resin binding post 3 and the measurement collar 10 is kept insulation.Adsorbed film or measured matter 1 can be attached on the surface of measuring vibrations tube work wall by modes such as coating, plating, sputters, and particular location can according to circumstances be attached to upper, middle and lower section or all surfaces of measuring vibrations tube work wall.The shape of adsorption film can be one or several ring-type, also can be one or several bulk.Whole measuring vibrations tube is fixed by screws on the base 6.
The structure of reference tube B and measuring cylinder A are identical.Reference tube B is provided with reference to vibrating barrel 18, with reference to the collar 20, with reference to the piezoelectric element 17 (referred to as exciting and Vibration pickup) of vibrational excitation and detection, with reference to protective cover 19, cylindrical ring epoxy resins fixed mount 12, flange 15 and reference terminal 13; with reference to establishing blow vent 14 on the vibrating barrel 18; be communicated with outside atmosphere through blow vent 14 with reference to vibrating barrel 18 inner chambers; with reference to vibrating barrel 18 be fixedly connected with reference to the collar 20, with reference to protective cover 19 be connected with reference to the collar 20.Be located at reference on the vibrating barrel 18 work wall surfaces with reference to exciting and Vibration pickup 17, be connected with reference terminal 13 by lead with the electrode of Vibration pickup 17 with reference to exciting, reference terminal 13 and insulate with reference to the collar 20 maintenances.
When measuring, take off the measuring and protecting cover 9 of measuring cylinder A and the reference protective cover 19 of reference tube B, adsorbed film or measured matter 1 are attached directly on the outer surface of measuring vibrations tube work wall (referring to Fig. 3).Measure quality and the viscoelastic dynamic characteristics of material by the resonant frequency signal that detects the measuring vibrations tube.
Claims (10)
1. electromagnetic resonant cylinder quality sensor is characterized in that being provided with measuring cylinder, reference tube and base, and measuring cylinder and reference tube are located on the base; Measuring cylinder is provided with the measuring vibrations tube, measures the collar, measures exciting and Vibration pickup, measuring and protecting cover, measures binding post, and the measuring vibrations tube is fixedly connected with measuring the collar, and the measuring and protecting cover is connected with the measurement collar; Measure exciting and Vibration pickup and be fixed in the cylinder,, in the inner chamber of measuring vibrations tube, measure exciting and be connected with the measurement binding post by lead with the electrode of Vibration pickup as an integral installation, measure binding post and measuring unit environmental protection and hold insulation; Reference tube is provided with reference to vibrating barrel, with reference to the collar, with reference to exciting and Vibration pickup, with reference to protective cover and reference terminal, with reference to vibrating barrel be fixedly connected with reference to the collar, with reference to protective cover be connected with reference to the collar; Be fixed in the cylinder with reference to exciting and Vibration pickup, as an integral installation in the inner chamber of reference vibrating barrel, with reference to the electrode of exciting and Vibration pickup by lead and reference terminal sub-connection, reference terminal with keep insulation with reference to the collar.
2. electromagnetic resonant cylinder quality sensor as claimed in claim 1 is characterized in that the measuring vibrations tube and measures the collar and fixedly connected with Type of Welding.
3. electromagnetic resonant cylinder quality sensor as claimed in claim 1 is characterized in that the measuring and protecting cover is connected with thread forms with the measurement collar.
4. electromagnetic resonant cylinder quality sensor as claimed in claim 1, it is characterized in that measuring exciting and the pick-up element is fixed together by epoxy resin fixed mount and flange, measure exciting and be connected with the measurement connection terminal with the soldering form, connection terminal and measuring unit environmental protection are held insulation with epoxy resin with the coil of pick-up element.
5. electromagnetic resonant cylinder quality sensor as claimed in claim 1, it is characterized in that with reference to vibrating barrel be fixedly connected with Type of Welding with reference to the collar.
6. electromagnetic resonant cylinder quality sensor as claimed in claim 1, it is characterized in that with reference to protective cover be connected with thread forms with reference to the collar.
7. electromagnetic resonant cylinder quality sensor as claimed in claim 1, it is characterized in that being fixed together by epoxy resin fixed mount and flange with reference to exciting and pick-up element, be connected with reference terminal with the soldering form with the coil of pick-up element with reference to exciting, keep insulation with connection terminal and with reference to the collar with epoxy resin.
8. electromagnetic resonant cylinder quality sensor as claimed in claim 1, it is characterized in that establishing blow vent at the measuring vibrations tube, the measuring vibrations tube inner chamber is communicated with outside atmosphere through blow vent, establishes blow vent at the reference vibrating barrel, is communicated with outside atmosphere through blow vent with reference to the vibrating barrel inner chamber.
9. electromagnetic resonant cylinder quality sensor as claimed in claim 1 is characterized in that measuring the electromagnetic component that exciting and pick-up element constitute for iron core and coil by soft magnet material.
10. electromagnetic resonant cylinder quality sensor as claimed in claim 1 is characterized in that the electromagnetic component that constitutes for iron core and coil by soft magnet material with reference to exciting and pick-up element.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB200710008740XA CN100472190C (en) | 2007-03-23 | 2007-03-23 | Electromagnetic resonant cylinder quality sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB200710008740XA CN100472190C (en) | 2007-03-23 | 2007-03-23 | Electromagnetic resonant cylinder quality sensor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101034000A true CN101034000A (en) | 2007-09-12 |
| CN100472190C CN100472190C (en) | 2009-03-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB200710008740XA Expired - Fee Related CN100472190C (en) | 2007-03-23 | 2007-03-23 | Electromagnetic resonant cylinder quality sensor |
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| Country | Link |
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| CN (1) | CN100472190C (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104330136A (en) * | 2014-11-06 | 2015-02-04 | 河北工业大学 | Resonant micro weight measuring device |
| CN105424567A (en) * | 2015-11-26 | 2016-03-23 | 黑龙江科技大学 | Dust measurement device based on resonance theory |
| CN108872063A (en) * | 2018-09-07 | 2018-11-23 | 吉林大学 | A kind of minimal feeding device and method based on parametric excitation and synchro-resonance |
| CN109282879A (en) * | 2018-09-25 | 2019-01-29 | 深圳大学 | A kind of contactless EMAT detection method and its system of micro-mass sensor |
| CN114563123A (en) * | 2022-04-28 | 2022-05-31 | 成都凯天电子股份有限公司 | External excitation type vibration cylinder pressure sensor and pressure calculation method thereof |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1008303B (en) * | 1987-06-09 | 1990-06-06 | 航空工业部太行仪表厂 | Resonant tube type compression transducer |
| CN2056249U (en) * | 1989-10-09 | 1990-04-18 | 王荫槐 | Vibration diaphragm density sensor |
| GB9601535D0 (en) * | 1996-01-26 | 1996-03-27 | Smiths Industries Plc | Fluid quantity measurement |
| WO1999034176A1 (en) * | 1997-12-26 | 1999-07-08 | Ngk Insulators, Ltd. | Double-headed mass sensor and mass detection method |
| CN1235025C (en) * | 2003-11-28 | 2006-01-04 | 太原航空仪表有限公司 | Pressure sensor of magnetic excitation vibrating cylinder |
-
2007
- 2007-03-23 CN CNB200710008740XA patent/CN100472190C/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104330136A (en) * | 2014-11-06 | 2015-02-04 | 河北工业大学 | Resonant micro weight measuring device |
| CN104330136B (en) * | 2014-11-06 | 2016-06-01 | 河北工业大学 | A kind of resonant mode micro weight measuring apparatus |
| CN105424567A (en) * | 2015-11-26 | 2016-03-23 | 黑龙江科技大学 | Dust measurement device based on resonance theory |
| CN108872063A (en) * | 2018-09-07 | 2018-11-23 | 吉林大学 | A kind of minimal feeding device and method based on parametric excitation and synchro-resonance |
| CN108872063B (en) * | 2018-09-07 | 2023-11-07 | 吉林大学 | Trace substance detection device and method based on parameter excitation and synchronous resonance |
| CN109282879A (en) * | 2018-09-25 | 2019-01-29 | 深圳大学 | A kind of contactless EMAT detection method and its system of micro-mass sensor |
| CN109282879B (en) * | 2018-09-25 | 2019-07-23 | 深圳大学 | A kind of contactless EMAT detection method and its system of micro-mass sensor |
| CN114563123A (en) * | 2022-04-28 | 2022-05-31 | 成都凯天电子股份有限公司 | External excitation type vibration cylinder pressure sensor and pressure calculation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100472190C (en) | 2009-03-25 |
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Granted publication date: 20090325 Termination date: 20120323 |