CN203133106U - Piezoelectric type acceleration sensor - Google Patents
Piezoelectric type acceleration sensor Download PDFInfo
- Publication number
- CN203133106U CN203133106U CN 201320159943 CN201320159943U CN203133106U CN 203133106 U CN203133106 U CN 203133106U CN 201320159943 CN201320159943 CN 201320159943 CN 201320159943 U CN201320159943 U CN 201320159943U CN 203133106 U CN203133106 U CN 203133106U
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- support
- housing
- piezoelectric
- pedestal
- base
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Abstract
The utility model discloses a piezoelectric type acceleration sensor comprising a housing, a support, a piezoelectric ceramic, a mass block, a shielding cover, and a two-core connector. The piezoelectric ceramic is sleeved on a central shaft of the support, and the mass block is sleeved on the piezoelectric ceramic. The piezoelectric ceramic, the mass block, and the support are disposed in the shielding cover in a sleeved manner, and the two-core connector is welded on the housing. The housing comprises a pedestal and a housing, between which is disposed an insulation sheet, and the housing is sleeved on the pedestal. The pedestal and the housing are separably processed. The polishing processing of the contact surface between the pedestal and the insulation pad can be carried out, and the polishing processing of contact surface between the support and the insulation pad can be also carried out, therefore the seamless stable coaxial contact of the piezoelectric ceramic, the mass block and the pedestal by using the support can be realized. The piezoelectric type acceleration sensor is advantageous in that the frequency response range can be enlarged, the horizontal sensitivity can be inhibited, the sensitivity accuracy can be improved, and the vibration limit and the impact limit are lower.
Description
Technical field
The utility model relates to the acceleration transducer field, refers in particular to a kind of piezoelectric acceleration transducer.
Background technology
Acceleration transducer is a kind of electromechanical transducer, be the testing tool that pressure that physical phenomenons such as degree of will speed up, vibrations, impact produce converts the electric signal of being convenient to measure to, piezoelectric acceleration transducer is to utilize the piezoelectric effect of piezoelectricity original paper to go to detect mechanical quantity.Piezoelectric acceleration sensor is suit piezoelectric device and mass on the support projecting shaft of housing base, when the stressed motion of housing, the inertia effect of mass makes piezoelectric device produce electric signal, convenience for machine work and assembling, traditional piezoelectric acceleration sensor base and shell generally are an integral body, the surface of contact to base and support does not carry out special processing, therefore the base upper surface flatness is relatively poor, base and support are not strict coaxial, produce cross stream component when base transmits mechanical quantity, cause product ubiquity instability, frequency response is narrower, problems such as the sensitivity degree of accuracy is lower, product can only be used for the low coarse measurement of precision.
The utility model content
The utility model has solved above-mentioned technical matters, and a kind of piezoelectric acceleration transducer that improves structural design is provided.
In order to solve the problems of the technologies described above, the technical solution of the utility model is: piezoelectric acceleration transducer, comprise shell, support, piezoelectric ceramics, mass, radome and two core connectors, described piezoelectric ceramics is enclosed within on the central shaft of support, described mass is enclosed within on the piezoelectric ceramics, described piezoelectric ceramics, mass and support are placed in the radome, described two core connectors are welded on the shell, it is characterized in that: described shell comprises base and housing, described housing is enclosed within on the base, also has an insulating trip between described base and the support.
Further, the upper and lower surface of the bottom surface of the end face of described base, support and insulating trip is polished surface.
Further, connect a PCB circuit board on the end face of described piezoelectric ceramics, the PCB board sleeve is in radome.
The beneficial effects of the utility model: base separates processing with shell, base and insulation spacer surface of contact, support and insulation spacer surface of contact all carry out polishing, make piezoelectric ceramics, mass realize seamless stable coaxial the contact by support and base, enlarge frequency response range, suppress cross sensitivity, improve the sensitivity accuracy, make vibration and the impact limit lower.
Description of drawings
Below in conjunction with accompanying drawing embodiment of the present utility model is described in further detail.
Fig. 1 is the cut-open view of the utility model structure;
Fig. 2 is the cut-open view of another example structure of the utility model.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is described further.
Piezoelectric acceleration transducer shown in Figure 1, comprise shell 1, support 2, piezoelectric ceramics 3, mass 4, radome 5 and two core connectors 6, piezoelectric ceramics 3 is enclosed within on the central shaft of support 2, mass 4 is enclosed within on the piezoelectric ceramics 3, piezoelectric ceramics 3, mass 4 and support 2 are placed in the radome 5, two core connectors 6 are welded on the shell 1, shell 1 comprises base 11 and housing 12, housing 12 is enclosed within on the base 11, also has an insulating trip 7 between base 11 and the support 2, the end face of base 11, the upper and lower surface of the bottom surface of support 2 and insulating trip 7 is polished surfaces, in the position of detecting piezoelectric acceleration sensor is installed, during vibration, the inertial force of mass 4 forces piezoelectric ceramics 3 to produce electric charge, electric charge is transferred to peripheral hardware by two core connectors 6 and external cable, base 11 all passes through polishing with the surface of contact of support 3 and insulating trip 2, reduce the cross stream component noise that produces in the whole mechanical quantity pipeline to greatest extent, suppress cross sensitivity, enlarge frequency response range, radome 5 effectively prevents electromagnetic interference (EMI).
Fig. 2 piezoelectric acceleration transducer, comprise shell 1, support 2, piezoelectric ceramics 3, mass 4, radome 5, two core connectors 6 and PCB circuit board 8, piezoelectric ceramics 3 is enclosed within on the central shaft of support 2, mass 4 is enclosed within on the piezoelectric ceramics 3, piezoelectric ceramics 3, mass 4 and support 2 are placed in the radome 5, two core connectors 6 are welded on the shell 1, shell 1 comprises base 11 and housing 12, housing 12 is enclosed within on the base 11, also has an insulating trip 7 between base 11 and the support 2, the end face of base 11, the upper and lower surface of the bottom surface of support 2 and insulating trip 7 is polished surfaces, PCB circuit board 8 is built in the radome 5, end face at piezoelectric ceramics 2 is used for the direct voltage output signal, is convenient to long-distance transmissions.In the position of detecting piezoelectric acceleration sensor is installed, during vibration, the inertial force of mass 4 forces piezoelectric ceramics 3 to produce electric charge, electric charge is transferred to peripheral hardware by two core connectors 6 and external cable, base 11 and support 3 all pass through polishing with the surface of contact of insulating trip 2, reduce the cross stream component noise that produces in the whole mechanical quantity pipeline to greatest extent, suppress cross sensitivity, enlarge frequency response range, radome 5 effectively prevents electromagnetic interference (EMI).
Although specifically show and introduced the utility model in conjunction with preferred embodiment; but the those skilled in the art should be understood that; in not breaking away from the spirit and scope of the present utility model that appended claims limits; in the form and details the utility model is made a variety of changes, be protection domain of the present utility model.
Claims (3)
1. piezoelectric acceleration transducer, comprise shell, support, piezoelectric ceramics, mass, radome and two core connectors, described piezoelectric ceramics is enclosed within on the central shaft of support, described mass is enclosed within on the piezoelectric ceramics, described piezoelectric ceramics, mass and support are placed in the radome, and described two core connectors are welded on the shell, and it is characterized in that: described shell comprises base and housing, described housing is enclosed within on the base, also has an insulating trip between described base and the support.
2. piezoelectric acceleration transducer according to claim 1, it is characterized in that: the upper and lower surface of the end face of described base, the bottom surface of support and insulating trip is polished surface.
3. according to each described piezoelectric acceleration transducer among the claim 1-2, it is characterized in that: connect a PCB circuit board on the end face of described piezoelectric ceramics, the PCB board sleeve is in radome.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320159943 CN203133106U (en) | 2013-04-01 | 2013-04-01 | Piezoelectric type acceleration sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320159943 CN203133106U (en) | 2013-04-01 | 2013-04-01 | Piezoelectric type acceleration sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203133106U true CN203133106U (en) | 2013-08-14 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320159943 Expired - Lifetime CN203133106U (en) | 2013-04-01 | 2013-04-01 | Piezoelectric type acceleration sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203133106U (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104406683A (en) * | 2015-01-01 | 2015-03-11 | 陈传海 | Acceleration sensor |
| WO2016206094A1 (en) * | 2015-06-26 | 2016-12-29 | 厦门乃尔电子有限公司 | Shear-type piezoelectric sensor |
| CN107167631A (en) * | 2017-06-07 | 2017-09-15 | 西人马（厦门）科技有限公司 | Electric charge output element and annular shearing piezoelectric acceleration sensor |
| CN107219377A (en) * | 2017-06-09 | 2017-09-29 | 西人马（厦门）科技有限公司 | Electric charge output element, assembly method and piezoelectric acceleration sensor |
| CN109324211A (en) * | 2018-10-23 | 2019-02-12 | 西人马联合测控（泉州）科技有限公司 | A kind of piezoelectric acceleration transducer |
| WO2019052172A1 (en) * | 2017-09-15 | 2019-03-21 | 西人马（厦门）科技有限公司 | Charge output element and annular shear piezoelectric acceleration sensor |
| CN111624362A (en) * | 2020-06-23 | 2020-09-04 | 北京航天拓扑高科技有限责任公司 | Piezoelectric acceleration sensor for integrated instrument |
| CN117825747A (en) * | 2024-03-04 | 2024-04-05 | 山东利恩斯智能科技有限公司 | Acceleration sensor with central mass block and working method thereof |
-
2013
- 2013-04-01 CN CN 201320159943 patent/CN203133106U/en not_active Expired - Lifetime
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104406683A (en) * | 2015-01-01 | 2015-03-11 | 陈传海 | Acceleration sensor |
| WO2016206094A1 (en) * | 2015-06-26 | 2016-12-29 | 厦门乃尔电子有限公司 | Shear-type piezoelectric sensor |
| GB2555348A (en) * | 2015-06-26 | 2018-04-25 | Xiamen Niell Electronics Co Ltd | Shear-type piezoelectric sensor |
| WO2018223852A1 (en) * | 2017-06-07 | 2018-12-13 | 西人马（厦门）科技有限公司 | Charge output element and annular shear-type piezoelectric acceleration sensor |
| CN107167631A (en) * | 2017-06-07 | 2017-09-15 | 西人马（厦门）科技有限公司 | Electric charge output element and annular shearing piezoelectric acceleration sensor |
| WO2018223828A1 (en) * | 2017-06-09 | 2018-12-13 | 西人马（厦门）科技有限公司 | Charge output element, assembly method, and piezoelectric acceleration sensor |
| CN107219377A (en) * | 2017-06-09 | 2017-09-29 | 西人马（厦门）科技有限公司 | Electric charge output element, assembly method and piezoelectric acceleration sensor |
| CN107219377B (en) * | 2017-06-09 | 2019-09-03 | 西人马联合测控（泉州）科技有限公司 | Charge output element, assembly method and piezoelectric acceleration sensor |
| WO2019052172A1 (en) * | 2017-09-15 | 2019-03-21 | 西人马（厦门）科技有限公司 | Charge output element and annular shear piezoelectric acceleration sensor |
| CN109324211A (en) * | 2018-10-23 | 2019-02-12 | 西人马联合测控（泉州）科技有限公司 | A kind of piezoelectric acceleration transducer |
| CN111624362A (en) * | 2020-06-23 | 2020-09-04 | 北京航天拓扑高科技有限责任公司 | Piezoelectric acceleration sensor for integrated instrument |
| CN117825747A (en) * | 2024-03-04 | 2024-04-05 | 山东利恩斯智能科技有限公司 | Acceleration sensor with central mass block and working method thereof |
| CN117825747B (en) * | 2024-03-04 | 2024-06-07 | 山东利恩斯智能科技有限公司 | Acceleration sensor with central mass block and working method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130814 |
|
| CX01 | Expiry of patent term |