CN203275439U - Three-shaft piezoelectric acceleration sensor - Google Patents
Three-shaft piezoelectric acceleration sensor Download PDFInfo
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- CN203275439U CN203275439U CN 201320344056 CN201320344056U CN203275439U CN 203275439 U CN203275439 U CN 203275439U CN 201320344056 CN201320344056 CN 201320344056 CN 201320344056 U CN201320344056 U CN 201320344056U CN 203275439 U CN203275439 U CN 203275439U
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- piezoelectric ceramics
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Abstract
A three-shaft piezoelectric acceleration sensor comprises a shell, and three sensor units which are orthogonally installed in the shell. Each of the sensor unit comprises a base, an inner shell, a piezoelectric ceramics and a mass block. The piezoelectric ceramic sleeves on a center shaft of the base; the mass block sleeves on the piezoelectric ceramic; the inner shell is fixed at a lower end of the base; a tube and a plug pin are arranged inside an upper end of the base; a lower end of the plug pin is connected with a signal line; the signal line is connected with the mass block along a downside of the piezoelectric ceramic; an inner side of the base is fixed with a base assembly; and the plug pin sleeves inside the base assembly. The technical scheme of the utility model is suitable for vibration measurement of the small structure, and is characterized by the convenient operation and installation, passive design, and high output impedance.
Description
Technical field
The utility model relates to a kind of acceleration transducer, refers in particular to a kind of piezoelectric acceleration transducer.
Background technology
Acceleration transducer is in fact a kind of electromechanical transducer, is degree of will speed up. vibrations. and the pressure that the physical phenomenons such as impact produce converts the testing tool of 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, and when the stressed motion of housing, the inertia effect of mass will make piezoelectric device produce electric signal.Limitation owing to using material and production technology etc. causes the product ubiquity unstable, and frequency response is narrow, impacts the problems such as the limit and vibration mark are little.
The utility model content
The utility model will solve above-mentioned technical matters, and a kind of three axle piezoelectric acceleration transducers are provided.
in order to solve the problems of the technologies described above, the technical solution of the utility model is: a kind of three axle piezoelectric acceleration transducers, comprise shell, three quadrature installations sensor unit in the enclosure, it is characterized in that: described sensor unit comprises base, inner casing, piezoelectric ceramics and mass, described piezoelectric ceramics is enclosed within on the central shaft of base, described mass is enclosed within on piezoelectric ceramics, described inner casing is fixed on the lower end of base, the upper end built-in pipe of described base is inserted and contact pin, the lower end of contact pin connects a signal wire, signal wire rides on mass along the piezoelectric ceramics downside, a base assembly is fixed in described base inboard, contact pin is enclosed within base assembly.
Further, described signal wire is fixed by insulating gel from sensor top outlet.
Further, described piezoelectric ceramics adopts the high tension electricity coefficient pottery.
The technical solution of the utility model adopts the high tension electricity coefficient pottery, the mass miniaturization, and overall mass is light, is applicable to the small-scale structure vibration survey, top outlet, convenient operation and installation; By insulating gel, signal wire and ground are completely cut off insulation, passive design has high output impedance.
Description of drawings
Below in conjunction with accompanying drawing, embodiment of the present utility model is described in further detail.
Fig. 1 is the structural representation of the utility model sensor unit;
Fig. 2 is the front view of structure of the present utility model.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is described further.
Fig. 1, a kind of three axle piezoelectric acceleration transducers shown in Figure 2, comprise shell 8, three quadrature installations sensor unit in the enclosure, it is characterized in that: described sensor unit comprises base 3, inner casing 7, piezoelectric ceramics 5 and mass 6, described piezoelectric ceramics 5 is enclosed within on the central shaft of base 3, described mass 6 is enclosed within on piezoelectric ceramics 5, described inner casing 7 is fixed on the lower end of base 3, the upper end built-in pipe of described base 3 slotting 1 and contact pin 2, the lower end of contact pin 2 connects a signal wire 9, signal wire 9 rides on mass 6 along piezoelectric ceramics 5 downsides, described signal wire 9 is fixed by insulating gel, a base assembly 4 is fixed in described base 3 inboards, contact pin 2 is enclosed within base assembly 4, described piezoelectric ceramics 5 adopts the high tension electricity coefficient pottery.Three axle piezoelectric acceleration transducers of the present utility model are installed in position in required detection, and when object to be detected produced any direction vibration, the inertial force of mass 6 forced piezoelectric ceramics 5 to produce electric charge, and electric charge is transferred to peripheral hardware by contact pin 2 and external cable.
Although specifically show and introduced the utility model in conjunction with preferred embodiment; but the those skilled in the art should be understood that; within 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. axle piezoelectric acceleration transducer, comprise shell, three quadrature installations sensor unit in the enclosure, it is characterized in that: described sensor unit comprises base, inner casing, piezoelectric ceramics and mass, described piezoelectric ceramics is enclosed within on base, described mass is enclosed within on piezoelectric ceramics, described inner casing is fixed on the lower end of base, the upper end built-in pipe of described base is inserted and contact pin, the lower end of contact pin connects a signal wire, signal wire rides on mass along the piezoelectric ceramics downside, a base assembly is fixed in described base inboard, contact pin is enclosed within base assembly.
2. a kind of three axle piezoelectric acceleration transducers according to claim 1, it is characterized in that: signal wire is fixed by insulating gel from sensor top outlet.
3. a kind of three axle piezoelectric acceleration transducers according to claim 1, is characterized in that: piezoelectric ceramics employing high tension electricity coefficient pottery.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320344056 CN203275439U (en) | 2013-06-13 | 2013-06-13 | Three-shaft piezoelectric acceleration sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320344056 CN203275439U (en) | 2013-06-13 | 2013-06-13 | Three-shaft piezoelectric acceleration sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203275439U true CN203275439U (en) | 2013-11-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320344056 Expired - Lifetime CN203275439U (en) | 2013-06-13 | 2013-06-13 | Three-shaft piezoelectric acceleration sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203275439U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112798101A (en) * | 2021-02-08 | 2021-05-14 | 厦门乃尔电子有限公司 | Modal sensor with TEDS function and assembling method thereof |
-
2013
- 2013-06-13 CN CN 201320344056 patent/CN203275439U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112798101A (en) * | 2021-02-08 | 2021-05-14 | 厦门乃尔电子有限公司 | Modal sensor with TEDS function and assembling 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 | ||
| CX01 | Expiry of patent term |
Granted publication date: 20131106 |