CN100492014C - New vibration acceleration sensor - Google Patents
New vibration acceleration sensor Download PDFInfo
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- CN100492014C CN100492014C CNB2006100814630A CN200610081463A CN100492014C CN 100492014 C CN100492014 C CN 100492014C CN B2006100814630 A CNB2006100814630 A CN B2006100814630A CN 200610081463 A CN200610081463 A CN 200610081463A CN 100492014 C CN100492014 C CN 100492014C
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- acceleration sensor
- vibration acceleration
- screw
- tri
- column type
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Abstract
This invention relates to a new vibration acceleration sensor including a base, a groove at the center of the base for mounting an insulating convex platform, in which, an energy converter, a mass block and a buffer plate are adhered to each other and fixed by three surrounding supports and holding screws at the center of the round cover above the insulating platform and the screws applies pre-pressure on it, the shell is fixed on the base by external screw threads of the three supports to constitute a new type of vibration acceleration sensor.
Description
Technical field
The invention belongs to piezoelectricity and sensitive technology field.Particularly relate to the vibration acceleration field of measuring technique.
Background technology
Present vibration acceleration sensor such as Ye Weiguo, the paper of Shen Guowei " architecture advances of piezoelectric acceleration transducer and design " (" sensor technology ", 2003, the 9 phases) adopts quartz and piezoelectric ceramics as sensitive element mostly, and sensitivity is generally not high.In addition, though domestic and international focus of research about cymbal transducer, but still be in the junior stage for its applied research.Also do not see at present report based on the new vibration acceleration sensor research of cymbal transducer.
Summary of the invention
The objective of the invention is to propose a kind of new vibration acceleration sensor based on cymbal transducer.This sensor has high voltage sensitivity.
New vibration acceleration sensor of the present invention comprises that base is a truncated cone-shaped, and three pillars that evenly distribute on it have the installation screw on each pillar, and dome is fixed on three pillars by screw and installation screw.The insulation boss is installed in the groove at base center.Cymbal transducer, insulating trip, mass and buffer substrate tablet place insulation boss top successively, each other with the insulating gel tight bond, by regulating pressing closer screw and can adjust size to precompression that cymbal transducer applies indirectly on the dome.Shell is fixed on the base by the external thread on three pillars on the base, has constituted new vibration acceleration sensor.
The advantage of new vibration acceleration sensor of the present invention is:
1. adopt cymbal transducer as sensitive element, and the equivalent piezoelectric constant of cymbal transducer is approximately about 40 times of common piezoelectric ceramics, the therefore measurement sensitivity that can improve sensor to a great extent;
2. new vibration acceleration sensor of the present invention is owing to adopted buffer substrate tablet with cymbal transducer metal electrode same structure, the measurement sensitivity that has improved sensor to a great extent.
Description of drawings:
The structural representation of Fig. 1 new vibration acceleration sensor of the present invention;
The buffer substrate tablet synoptic diagram of Fig. 2 new vibration acceleration sensor of the present invention.
The vertical view of Fig. 3 new vibration acceleration sensor base of the present invention;
The sectional view of Fig. 4 novel vibrating acceleration sensor of the present invention base;
Specific embodiments
Below in conjunction with drawings and Examples new vibration acceleration sensor of the present invention is done detailed description.
New vibration acceleration sensor (see figure 1) of the present invention, it comprises insulation boss 2 and dome 6, the shell 7 on base 8, cymbal transducer 3, mass 4, buffer substrate tablet 5, the base 8 and presses closer screw 9.Described base is a truncated cone-shaped, base 8 is made of the circular platform of the square mount pad in bottom, middle part and three arcuate strut being evenly distributed on the circular platform, three pillars evenly distribute on it, each post top portion all has one screw is installed, and dome 6 is fixed on three pillars by screw and installation screw.Insulation boss 2 is installed in the groove at base 8 centers.There is the aviation jack interface of conveniently drawing lead base 8 sides.Cymbal transducer 3, insulating trip 10, mass 4 and buffer substrate tablet 5 place insulation boss 2 tops from down to up successively, each other with the insulating gel tight bond.Dome 6 centers have one to press closer screw 9, press closer the size that screw 9 can be adjusted the precompression that cymbal transducer 3 is applied indirectly by adjusting.Shell 7 is fixed on the base 8 by the external thread in 8 three pillar outsides of base, constitutes new vibration acceleration sensor.
New vibration acceleration sensor profile of the present invention is a column type.Fig. 1 is the structural representation of new vibration acceleration sensor.
The transducer of new vibration acceleration sensor of the present invention is selected cymbal transducer for use, selects the piezoelectric of PZT-5A as cymbal transducer for use.Buffer substrate tablet is selected brass material for use.
The diameter of mass 4 is 18mm, and height is 5mm, and quality is about 10g.Insulation boss 2 diameters are 10mm, and height is 4mm.Base 8 diameters are 38mm, and height is 24mm.Buffer substrate tablet 5 diameters are 18mm, and thickness is 0.3mm, and cap end diameter is 3mm, and intracavity diameter is l0mm, and the degree of depth is 2mm.
The surveying work principle of new vibration acceleration sensor of the present invention is done and is briefly described below.
As previously mentioned, new vibration acceleration sensor is installed on the measurand, when measurand is vibrated with certain acceleration, sensor vibrates with measurand, mass 4 in the sensor is also with identical acceleration vibration, the inertial force that mass 4 produces acts on the cymbal transducer 3, cymbal transducer 3 produces the electric charge of alternation on upper and lower electrode owing to piezoelectric effect, this quantity of electric charge is proportional to the vibration acceleration of measurand, therefore can be by measuring the vibration acceleration that this quantity of electric charge obtains measurand.
Under the constant prerequisite of new vibration acceleration sensor structural arrangements of the present invention, change the structural parameters of cymbal transducer and the structural parameters of buffer substrate tablet and can obtain the different voltage sensitivity of this novel vibrating sensor.
The advantage of the new vibration acceleration sensor of present embodiment is:
1) utilizes vertically piezoelectric constant of the higher equivalence of cymbal transducer, can improve the voltage sensitivity of this sensor.
2) adopt the identical shaped buffer substrate tablet of metal electrode with cymbal transducer, can improve the voltage sensitivity of this vibration acceleration sensor to a great extent.
3) use the insulation boss to solve the problem of drawing of cymbal transducer contact conductor.
4) under the situation of not destroying the cymbal transducer structure, the pressing closer screw and cymbal transducer, mass and buffer substrate tablet can be fixed again of three arcuate strut of base and dome center.
Provide the specific embodiment of two new vibration acceleration sensors of the present invention below.
Embodiment 1
Under the constant condition of new vibration acceleration sensor structural parameters, be cymbal transducer (its natural frequency f of 12mm with the diameter of phi
0Be 27.346kHz) as the sensitive element of this vibration acceleration sensor, the voltage sensitivity that experiment records this sensor is respectively 1360mV/g.
Under the constant condition of new vibration acceleration sensor structural parameters, be 16mm (its natural frequency f with the diameter of phi
0Be 22.637kHz) cymbal transducer as the sensitive element of this vibration acceleration sensor, the voltage sensitivity that experiment records this sensor is 3670mV/g.
Claims (3)
1. vibration acceleration sensor, it comprises insulation boss (2), dome (6), the shell (7) on cymbal transducer (3), mass (4), cymbals formula buffer substrate tablet (5), tri-column type base (8), the tri-column type base (8) and presses closer screw (9), it is characterized in that:
Three pillars on the circular platform constitute described tri-column type base (8) by the square mount pad in bottom, the circular platform in middle part and in the middle part of being evenly distributed on, three pillars are arcuate strut, each post top portion all has one screw is installed, dome (6) is fixed on three pillars by screw and installation screw, insulation boss (2) is installed in the groove at base (8) center, and there is the aviation jack interface of conveniently drawing lead tri-column type base (8) side; Cymbal transducer (3), insulating trip (10), mass (4) and cymbals formula buffer substrate tablet (5) place insulation boss (2) top from down to up successively, each other with the insulating gel tight bond, dome (6) center has one to press closer screw (9), press closer the size that screw (9) can be adjusted the precompression that cymbal transducer (3) is applied indirectly by adjusting, shell (7) is fixed on the tri-column type base (8) by the external thread in three pillar outsides of tri-column type base (8), constitutes new vibration acceleration sensor.
2. vibration acceleration sensor according to claim 1, it is characterized in that: base (8) adopts aluminum alloy materials, cymbal transducer (3) is a metal---the Ceramic Composite transducer, mass (4) is selected steel for use No. 45, the poly-tetrem alkene of insulation boss (2) material selection, dome (6) and shell (7) be the aluminium alloy all, and pressing closer screw (9) is standard component, and buffer substrate tablet (5) is selected brass material for use.
3. vibration acceleration sensor according to claim 1 is characterized in that: the diameter of described mass (4) is 18mm, and quality is about 10g; Insulation boss (2) diameter is 10mm, and height is 4mm; Tri-column type base (8) diameter is 38mm, and height is 24mm; Cymbals formula buffer substrate tablet (5) diameter is 18mm, and thickness is 0.3mm, and cap end diameter is 3mm, and intracavity diameter is 10mm, and the degree of depth is 2mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100814630A CN100492014C (en) | 2006-05-22 | 2006-05-22 | New vibration acceleration sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100814630A CN100492014C (en) | 2006-05-22 | 2006-05-22 | New vibration acceleration sensor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1858595A CN1858595A (en) | 2006-11-08 |
| CN100492014C true CN100492014C (en) | 2009-05-27 |
Family
ID=37297519
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2006100814630A Expired - Fee Related CN100492014C (en) | 2006-05-22 | 2006-05-22 | New vibration acceleration sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100492014C (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108507666B (en) * | 2018-03-30 | 2019-10-25 | 华中科技大学 | A kind of micro-vibration detector based on piezoelectric sensing |
| CN111571193A (en) * | 2020-06-03 | 2020-08-25 | 深圳市初心自动化设备有限公司 | Vibrator pressurizing equipment working system and machining method thereof |
-
2006
- 2006-05-22 CN CNB2006100814630A patent/CN100492014C/en not_active Expired - Fee Related
Non-Patent Citations (2)
| Title |
|---|
| Displacement amplification and resonance characteristics of the cymbal transducers. Cheng-Liang Sun .et al.Sensors and Actuators A,No.121. 2005 |
| Displacement amplification and resonance characteristics of the cymbal transducers. Cheng-Liang Sun .et al.Sensors and Actuators A,No.121. 2005 * |
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| Publication number | Publication date |
|---|---|
| CN1858595A (en) | 2006-11-08 |
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| C06 | Publication | ||
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| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
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| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090527 Termination date: 20100522 |