CN2162654Y - Piezoelectricity compound acceleration sensor - Google Patents
Piezoelectricity compound acceleration sensor Download PDFInfo
- Publication number
- CN2162654Y CN2162654Y CN 93215956 CN93215956U CN2162654Y CN 2162654 Y CN2162654 Y CN 2162654Y CN 93215956 CN93215956 CN 93215956 CN 93215956 U CN93215956 U CN 93215956U CN 2162654 Y CN2162654 Y CN 2162654Y
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- girder
- semi
- fixed
- acceleration sensor
- utility
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Abstract
The utility model relates to an acceleration sensor, comprising an outer shell, a mass block, a piezoelectric element and electrodes. The interior of the shell body is provided with a fixing part. The piezoelectric element is pasted with a cantilever beam which is composed of elastic member and is fixed in the outer shell. The mass block is fixed on the upper part of the free straining end of the cantilever beam. The inside of the outer shell keeps the clearance with the mass block and the cantilever beam. The utility model has simple structure, simple manufacture, low cost, uniform piezoelectric element deformation, big output amplitude and high sensitivity, is especially suitable for detecting the human body motion, and simultaneously is suitable for others fields for detecting the acceleration.
Description
The utility model relates to a kind of sensor that is used to detect acceleration of motion.
Along with the development of electronic product towards intelligent direction, the demand of sensor day by day increased, present acceleration transducer, a kind of is the high precision type that is used for Measuring and testing, another kind is the low value civil version.For preceding a kind of, depositing and costing an arm and a leg, complex structure, weak point such as output amplitude is little, technological requirement is high, difficult in maintenance; A kind of for the back, as its patent No. of Chinese patent is 90209813.6 described directed acceleration transducers, form by pedestal, coasting body, piezoelectric part, electrode, because its coasting body acts directly on the free end of piezoelectric, therefore when detecting, be in impact conditions, the easily broken fracture of piezoelectric, and yet more complicated of the impact acceleration, processing technology that can only detect gravity direction are not suitable for the human body motion.
The purpose of this utility model provides a kind of acceleration transducer that is mainly used in the human body motion, and it has output amplitude characteristics big, highly sensitive, firm in structure.
Inventive concept of the present utility model is achieved in that and is provided with a fixed part in the enclosure, has fixed a semi-girder of pasting the compound formation of elastomeric element on piezoelectric part, mass be fixed on semi-girder the free strain end above.Piezoelectric part at the semi-girder stiff end connects extraction electrode respectively in both sides up and down.
The utility model is owing to adopted by flexible member and the compound semi-girder that constitutes of piezoelectric part, make piezoelectric member deforms more even, therefore have that output amplitude is big, firm in structure, highly sensitive, processing is simple, with low cost, be specially adapted to detection, also can in the field of other sense acceleration, use simultaneously human motion.
Accompanying drawing one is a cut-open view of the present utility model.
The utility model will be further described below in conjunction with accompanying drawing: in plastic casing 1; be provided with a fixed part 5; to on piezoelectric part 2, paste elastomeric element 3 and the semi-girder of compound formation; be fixed in the plastic casing 1; this makes the sensor output amplitude big; firm in structure, shield.The stiff end of piezoelectric part 2 has output electrode 6.Elastomeric element 3 can be a metal or nonmetal.Piezoelectric part 2 and elastomeric element 3 be reversing of position mutually.The piezoelectric part 2 of present embodiment is a piezoelectric ceramic piece.The mass 4 of cylindricality is bonded and fixed at above the elastomeric element 3 of free strain end of semi-girder, and semi-girder is formed certain precompression.Keep certain clearance between the inboard of shell 1 and mass 4 and the semi-girder; Also can be in the inboard of shell 1, and mass 4 and semi-girder up and down between, a limiting component is set respectively, make itself and mass 4 and semi-girder maintenance certain clearance.The limit deformation of semi-girder in certain scope, is played the beam action of protection cantilever.When sensor is in the acceleration movement state or is subjected to external shock, can make free strain end stress deformation by horizontal piezoelectric effect, produce polarization charge, by electrode 6 output electric signal.When the sensor acceleration was zero, semi-girder promptly resiled.
Claims (2)
1, a kind of piezoelectricity combined acceleration sensor, comprise shell [1], mass [4], piezoelectric part [2], electrode [6], of the present utility model being characterised in that in the described shell [1], be provided with a fixed part [5], fixed a semi-girder of on described piezoelectric part [2], pasting the compound formation of elastomeric element [3], mass [4] be fixed on semi-girder the free strain end above.
2,, it is characterized in that the elastomeric element ［ 3 ］ of described semi-girder and piezoelectric part ［ 2 ］ reversing of position mutually according to claim 1 described piezoelectricity combined acceleration sensor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93215956 CN2162654Y (en) | 1993-06-11 | 1993-06-11 | Piezoelectricity compound acceleration sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93215956 CN2162654Y (en) | 1993-06-11 | 1993-06-11 | Piezoelectricity compound acceleration sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2162654Y true CN2162654Y (en) | 1994-04-20 |
Family
ID=33796282
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 93215956 Expired - Fee Related CN2162654Y (en) | 1993-06-11 | 1993-06-11 | Piezoelectricity compound acceleration sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2162654Y (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100344975C (en) * | 2003-09-16 | 2007-10-24 | 财团法人工业技术研究院 | Performance regulating device of inertial sensor |
| CN101321497B (en) * | 2005-11-23 | 2011-03-09 | 3M创新有限公司 | Cantilevered bioacoustic sensor and method using same |
| US7998091B2 (en) | 2005-11-23 | 2011-08-16 | 3M Innovative Properties Company | Weighted bioacoustic sensor and method of using same |
| CN102889925A (en) * | 2011-07-22 | 2013-01-23 | 国家纳米科学中心 | Self-power supply vibration sensor based on ZnO nanowires and manufacturing method thereof |
| CN103048489A (en) * | 2011-10-12 | 2013-04-17 | 立积电子股份有限公司 | Piezoresistive Z-axis acceleration sensor |
| CN105247335A (en) * | 2012-09-24 | 2016-01-13 | 积水化学工业株式会社 | Leakage detector, leakage detection method, and pipe network monitoring apparatus |
| US9846075B2 (en) | 2011-01-30 | 2017-12-19 | Aquarius Spectrum Ltd. | Method and system for leak detection in a pipe network |
| CN109428514A (en) * | 2017-08-25 | 2019-03-05 | 青岛因菲尼思微电子科技有限公司 | A kind of vibrational energy collector |
-
1993
- 1993-06-11 CN CN 93215956 patent/CN2162654Y/en not_active Expired - Fee Related
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100344975C (en) * | 2003-09-16 | 2007-10-24 | 财团法人工业技术研究院 | Performance regulating device of inertial sensor |
| CN101321497B (en) * | 2005-11-23 | 2011-03-09 | 3M创新有限公司 | Cantilevered bioacoustic sensor and method using same |
| US7998091B2 (en) | 2005-11-23 | 2011-08-16 | 3M Innovative Properties Company | Weighted bioacoustic sensor and method of using same |
| US8024974B2 (en) | 2005-11-23 | 2011-09-27 | 3M Innovative Properties Company | Cantilevered bioacoustic sensor and method using same |
| US8333718B2 (en) | 2005-11-23 | 2012-12-18 | 3M Innovative Properties Company | Weighted bioacoustic sensor and method of using same |
| US9846075B2 (en) | 2011-01-30 | 2017-12-19 | Aquarius Spectrum Ltd. | Method and system for leak detection in a pipe network |
| CN102889925A (en) * | 2011-07-22 | 2013-01-23 | 国家纳米科学中心 | Self-power supply vibration sensor based on ZnO nanowires and manufacturing method thereof |
| CN103048489A (en) * | 2011-10-12 | 2013-04-17 | 立积电子股份有限公司 | Piezoresistive Z-axis acceleration sensor |
| CN103048489B (en) * | 2011-10-12 | 2015-08-05 | 立积电子股份有限公司 | Piezoresistive Z-axis acceleration sensor |
| CN105247335A (en) * | 2012-09-24 | 2016-01-13 | 积水化学工业株式会社 | Leakage detector, leakage detection method, and pipe network monitoring apparatus |
| CN109428514A (en) * | 2017-08-25 | 2019-03-05 | 青岛因菲尼思微电子科技有限公司 | A kind of vibrational energy collector |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |