CN202025016U - Ultralow frequency triaxial acceleration transducer - Google Patents
Ultralow frequency triaxial acceleration transducer Download PDFInfo
- Publication number
- CN202025016U CN202025016U CN 201120133266 CN201120133266U CN202025016U CN 202025016 U CN202025016 U CN 202025016U CN 201120133266 CN201120133266 CN 201120133266 CN 201120133266 U CN201120133266 U CN 201120133266U CN 202025016 U CN202025016 U CN 202025016U
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- pedestal
- ultralow frequency
- connector
- piezoelectric devices
- screw
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Abstract
The utility model discloses an ultralow frequency triaxial acceleration transducer, comprising a pedestal, supports, three piezoelectric devices, three mass blocks, a metal casing, a top cover, and a connector, wherein the support is a square block, locked by a screw and glued to the pedestal by adding a screw thread anti-looseness glue; the three piezoelectric devices and three mass blocks are respectively sleeved upon three screw rods successively, locked upon the three surfaces where the supports mutually vertical to each other by screw rods; and the metal casing is sleeved upon the pedestal, covering outside the piezoelectric devices and mass blocks and in sealing combination with the pedestal through argon arc welding, with an upper cover, provided with the connector thereon, being welded upon the upper port of the metal casing. The ultralow frequency acceleration design can be applied to low frequency vibration detection and simultaneous detection of the acceleration in three directions. The enclosed welding packaging ensures the airtight and water-proofness of the product, thereby being suitable for the long term employment in harsh environment such as high humidity.
Description
Technical field
The utility model relates to the acceleration transducer technical field, relates in particular to a kind of ultralow frequency 3-axis acceleration sensor.
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.
3-axis acceleration sensor is the vibration or the impact acceleration of three directions of measurement space simultaneously.Known 3-axis acceleration sensor is to pack into three to have the unidirectional acceleration transducer of independent output in metal shell, is vertically mounted on together mutually and forms.Traditional acceleration transducer impacts problems such as the limit and vibration mark are little because the limitation of structural design, materials used and production technology etc. causes product ubiquity instability, and Hz-KHz is narrow, 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 ultralow frequency 3-axis acceleration sensor that improves structural design, can be used for the detection of earthquake, buildings, dam, mine etc.; Also can be used for militaryly deploying troops on garrison duty, early warning, submarine detecting, landslide detecting etc.。
For achieving the above object, the technical scheme that the utility model proposed is: the ultralow frequency 3-axis acceleration sensor, comprise pedestal, support, three piezoelectric devices, three masses, metal shell, loam cake and connectors, it is characterized in that: described support is a square block, adopts the screw locking and adds the locking thread glue bond on pedestal; Described three piezoelectric devices and mass are taken up in order of priority and are placed on three screw rods, are locked on mutually perpendicular three faces of described support by screw rod; Described metal shell is placed on the pedestal, covers in piezoelectric device and mass outside, seals by argon arc welding and pedestal to combine, and its upper port is welded with a loam cake, on cover connector be installed.
Further, described connector is the five-core cable connector, combines with loam cake by the argon arc welding.
Further, adopt locking thread glue to reinforce between described screw rod and the support.
The beneficial effects of the utility model: the design of ultralow frequency acceleration, can be used for low-frequency vibration detection, detect the acceleration of three directions simultaneously; Improve structural design, compact conformation, volume is little, makes properties of product more stable, and 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; Totally-enclosed welding encapsulation is applicable to for a long time and installs and uses under rugged surroundings such as high humidity.
Description of drawings
Fig. 1 is the finished product profile and the explosive view of sensor of the present utility model.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is described further.
As shown in Figure 1, ultralow frequency 3-axis acceleration sensor of the present utility model, comprise pedestal 1, support 2, three piezoelectric devices 3, three masses 4, metal shell 5, loam cake 6 and connectors 7, described support 2 is a square block, adopts the screw locking also to add the locking thread glue bond on pedestal 1; Described three piezoelectric devices 3 and mass 4 are taken up in order of priority and are placed on three screw rods, are locked on described support 2 mutually perpendicular three faces by screw rod; Described metal shell 5 is placed on the pedestal 1, covers in piezoelectric device 3 and mass 4 outsides, combines with pedestal 1 sealing by argon arc welding, and its upper port is welded with a loam cake 6, and connector 7 is installed on the loam cake 6.Connector 7 is the five-core cable connector, combines with loam cake 6 by the argon arc welding.
Principle of work: ultralow frequency 3-axis acceleration sensor of the present utility model is installed in the position of required detection, give this sensor vibration transfer by environment, the inertial force of mass 4 will force piezoelectric device 3 to produce electric charge, and electric charge is transferred to computing machine by connector 7 and low noise concentric cable and does subsequent treatment.Full metal jacket protection and argon arc welding sealed package have guaranteed the sealing of product, thereby guarantee that electric charge output can distortion, to obtain raw 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 (3)
1. ultralow frequency 3-axis acceleration sensor, comprise: pedestal, support, three piezoelectric devices, three masses, metal shell, loam cake and connectors, it is characterized in that: described support is a square block, adopts the screw locking and adds the locking thread glue bond on pedestal; Described three piezoelectric devices and mass are taken up in order of priority and are placed on three screw rods, are locked on mutually perpendicular three faces of described support by screw rod; Described metal shell is placed on the pedestal, covers in piezoelectric device and mass outside, seals by argon arc welding and pedestal to combine, and its upper port is welded with a loam cake, on cover connector be installed.
2. ultralow frequency 3-axis acceleration sensor as claimed in claim 1 is characterized in that: described connector is the five-core cable connector, combines with loam cake by the argon arc welding.
3. ultralow frequency 3-axis acceleration sensor as claimed in claim 1 is characterized in that: adopt locking thread glue to reinforce between described screw rod and the support.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120133266 CN202025016U (en) | 2011-04-29 | 2011-04-29 | Ultralow frequency triaxial acceleration transducer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120133266 CN202025016U (en) | 2011-04-29 | 2011-04-29 | Ultralow frequency triaxial acceleration transducer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202025016U true CN202025016U (en) | 2011-11-02 |
Family
ID=44849961
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201120133266 Expired - Lifetime CN202025016U (en) | 2011-04-29 | 2011-04-29 | Ultralow frequency triaxial acceleration transducer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202025016U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107167623A (en) * | 2017-05-22 | 2017-09-15 | 杭州集普科技有限公司 | Three axis angular rate sensors of vehicle impact testing |
| WO2018224036A1 (en) * | 2017-06-09 | 2018-12-13 | 西人马（厦门）科技有限公司 | Three-axis piezoelectric sensor |
-
2011
- 2011-04-29 CN CN 201120133266 patent/CN202025016U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107167623A (en) * | 2017-05-22 | 2017-09-15 | 杭州集普科技有限公司 | Three axis angular rate sensors of vehicle impact testing |
| CN107167623B (en) * | 2017-05-22 | 2021-11-26 | 杭州集普科技有限公司 | Triaxial angular velocity sensor for automobile crash test |
| WO2018224036A1 (en) * | 2017-06-09 | 2018-12-13 | 西人马（厦门）科技有限公司 | Three-axis piezoelectric sensor |
| US11162973B2 (en) | 2017-06-09 | 2021-11-02 | Fatri Unied Testing & Control (Quanzhou) Technologies Co., Ltd. | Three-axis piezoelectric accelerometer |
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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: 20111102 Effective date of abandoning: 20140828 |
|
| C20 | Patent right or utility model deemed to be abandoned or is abandoned |