CN202049176U - Magnetic base piezoelectric acceleration transducer - Google Patents
Magnetic base piezoelectric acceleration transducer Download PDFInfo
- Publication number
- CN202049176U CN202049176U CN2011201308346U CN201120130834U CN202049176U CN 202049176 U CN202049176 U CN 202049176U CN 2011201308346 U CN2011201308346 U CN 2011201308346U CN 201120130834 U CN201120130834 U CN 201120130834U CN 202049176 U CN202049176 U CN 202049176U
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- China
- Prior art keywords
- acceleration transducer
- piezoelectric device
- base
- magnetic base
- piezoelectric
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Abstract
The utility model discloses a magnetic base piezoelectric acceleration transducer which comprises a base, a piezoelectric device, a mass block, a metal housing, an upper cover and a connector and is characterized by also comprising a magnet and a circuit board, wherein the piezoelectric device is sleeved on a central shaft of the base; the mass block is sleeved on the piezoelectric device and is provided with the circuit board; the metal housing is sleeved on the base and covers outside the piezoelectric device and the mass block, and the upper cover is provided with the connector and is welded on the upper port of the metal housing; and the magnet is embedded at the bottom of the base. The magnetic base piezoelectric acceleration transducer is protected by the full metal housing and effectively avoids the electromagnetic interference; the structure design is improved, therefore, the transducer has more stable performance, wide frequency response scope, low vibration and impact limit, little transverse crossed interference and low amplitude nonlinearity; with the adoption of magnetic installation, the sensor can be installed at any point without changing the structure of an object to be measured; the transducer has desirable gas tightness and waterproof performance; and a prefect signal amplifying modulation circuit guarantees the precision of the output data.
Description
Technical field
The utility model relates to the acceleration transducer technical field, relates in particular to a kind of piezoelectric acceleration transducer with the magnetic base.
Background technology
Acceleration transducer is the testing tool that the pressure that physical phenomenon produced such as degree of will speed up, vibrations, impact are transformed into the electric signal of being convenient to measure.Piezoelectric acceleration transducer is to utilize " piezoelectric effect " of piezoelectric element wherein to go to detect mechanical quantity.
General piezoelectric acceleration transducer is suit piezoelectric device and a mass on the centre frame projecting shaft of housing base, and when the stressed motion of housing base, the inertia effect of mass will make piezoelectric device produce corresponding electric signal.Traditional piezoelectric acceleration transducer is because structural design, materials used, and the limitation of production technology etc. causes product ubiquity instability, and Hz-KHz is narrow, impacts problems such as the limit and vibration mark are little, and product can only be used for the coarse measurement of low precision.
Summary of the invention
For overcoming the problems referred to above, the utility model proposes a kind of band magnetic base piezoelectric acceleration transducer that improves structural design, can be widely used in aspects such as the energy, power station, wind energy, petroleum pipe line, steel works equipment, railway, train, car knock, habitata.
For achieving the above object, the technical scheme that the utility model proposed is: a kind of magnetic base piezoelectric acceleration transducer, comprise: pedestal, piezoelectric device, mass, metal shell, loam cake and connector is characterized in that: also comprise a magnet and a circuit board; Described piezoelectric device is placed on the central shaft of pedestal; Described mass is placed on the piezoelectric device, and described circuit board is installed on it; Described metal shell is enclosed within on the pedestal, covers in piezoelectric device and mass outside, its upper port welding loam cake, on cover described connector be installed; Described magnet is embedded in base bottom.
Further, described connector is the single core cable connector, combines with the loam cake sealing by argon arc welding.
Further, described pedestal is one to be provided with the ladder frustum cone structure of central shaft, and the bottom is provided with a circular groove.
Preferably, described metal shell combines with the pedestal sealing by argon arc welding.
Further, be the amplification modulate circuit on the described circuit board.
The beneficial effects of the utility model: the full metal jacket protection can effectively prevent electromagnetic interference (EMI); Improve structural design, make properties of product more stable, Hz-KHz is wide, vibration and to impact the limit low, and lateral cross talk is little, and the amplitude non-linearity degree is low; Employing magnetic is installed, and can not change the structure of measurand, and install the arbitrfary point; Products air tightness, good waterproof performance; Perfect signal amplifying and conditioning circuit has guaranteed the accuracy of output data.
Description of drawings
Fig. 1 is the finished product profile and the explosive view of sensor of the present utility model;
Fig. 2 is the diagrammatic cross-section of sensor of the present utility model.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is described further.
As illustrated in fig. 1 and 2, a kind of magnetic base piezoelectric acceleration transducer of the present utility model comprises pedestal 1, piezoelectric device 2, mass 3, metal shell 4, loam cake 5 and connector 6, also comprises a magnet 7 and a circuit board 8; Described piezoelectric device 2 is placed on the central shaft of pedestal 1; Described mass 3 is placed on the piezoelectric device 2, and described circuit board 8 is installed on it; Described metal shell 4 is enclosed within on the pedestal 1, covers in piezoelectric device 2 and mass 3 outsides, and its upper port welding loam cake 5 is installed described connector 6 on the loam cake 5; Described magnet 7 is embedded in pedestal 1 bottom; For amplifying modulate circuit, be used for the electric signal that amplification piezoelectric device 2 produces on the circuit board 8.
Principle of work: magnetic base piezoelectric acceleration transducer of the present utility model is installed in the position of required detection, during vibration, the inertial force of mass 3 forces piezoelectric device 2 to produce electric charge, and electric charge is done terminal processes through connector 6 and cable transmission to computing machine by the amplification modulate circuit commentaries on classics of circuit board 8.Full metal jacket 4 protections can effectively prevent electromagnetic interference (EMI), simultaneously by the argon arc welding sealed package; the sealing and the water proofing property of product have been guaranteed; thereby guarantee that electric charge output can distortion, through the amplification of perfect signal amplifying and conditioning circuit, to obtain output data accurately.
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 the spirit and scope of the present utility model that do not break away from appended claims and limited; the various variations that the utility model is made are protection domain of the present utility model in the form and details.
Claims (5)
1. magnetic base piezoelectric acceleration transducer, comprising: pedestal, piezoelectric device, mass, metal shell, loam cake and connector is characterized in that: also comprise a magnet and a circuit board; Described piezoelectric device is placed on the central shaft of pedestal; Described mass is placed on the piezoelectric device, and described circuit board is installed on it; Described metal shell is enclosed within on the pedestal, covers in piezoelectric device and mass outside, its upper port welding loam cake, on cover described connector be installed; Described magnet is embedded in base bottom.
2. a kind of magnetic base piezoelectric acceleration transducer as claimed in claim 1, it is characterized in that: described connector is the single core cable connector, combines with the loam cake sealing by argon arc welding.
3. a kind of magnetic base piezoelectric acceleration transducer as claimed in claim 1 is characterized in that: described pedestal is one to be provided with the ladder frustum cone structure of central shaft, and the bottom is provided with a circular groove.
4. a kind of magnetic base piezoelectric acceleration transducer as claimed in claim 1 is characterized in that: described metal shell combines with the pedestal sealing by argon arc welding.
5. a kind of magnetic base piezoelectric acceleration transducer as claimed in claim 1 is characterized in that: be the amplification modulate circuit on the described circuit board.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201308346U CN202049176U (en) | 2011-04-28 | 2011-04-28 | Magnetic base piezoelectric acceleration transducer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201308346U CN202049176U (en) | 2011-04-28 | 2011-04-28 | Magnetic base piezoelectric acceleration transducer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202049176U true CN202049176U (en) | 2011-11-23 |
Family
ID=44989481
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201308346U Expired - Lifetime CN202049176U (en) | 2011-04-28 | 2011-04-28 | Magnetic base piezoelectric acceleration transducer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202049176U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106124042A (en) * | 2016-08-26 | 2016-11-16 | 北京普华亿能风电技术有限公司 | A kind of acoustic emission sensor for Wind turbines |
| CN109557331A (en) * | 2018-11-19 | 2019-04-02 | 安徽容知日新科技股份有限公司 | Sensing equipment and the method for installing sensing equipment |
-
2011
- 2011-04-28 CN CN2011201308346U patent/CN202049176U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106124042A (en) * | 2016-08-26 | 2016-11-16 | 北京普华亿能风电技术有限公司 | A kind of acoustic emission sensor for Wind turbines |
| CN109557331A (en) * | 2018-11-19 | 2019-04-02 | 安徽容知日新科技股份有限公司 | Sensing equipment and the method for installing sensing equipment |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20111123 Effective date of abandoning: 20140828 |
|
| C20 | Patent right or utility model deemed to be abandoned or is abandoned |