CN203561647U - Piezoelectric accelerometer - Google Patents
Piezoelectric accelerometer Download PDFInfo
- Publication number
- CN203561647U CN203561647U CN201320757744.9U CN201320757744U CN203561647U CN 203561647 U CN203561647 U CN 203561647U CN 201320757744 U CN201320757744 U CN 201320757744U CN 203561647 U CN203561647 U CN 203561647U
- Authority
- CN
- China
- Prior art keywords
- piezoelectric
- sensor base
- acceleration transducer
- patches
- output lead
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Landscapes
- Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
Abstract
The utility model discloses a piezoelectric accelerometer which operates based on the piezoelectric effect of piezoelectric crystals. When some crystal is stressed and deformed in a certain direction, the inside of the crystal can be polarized, frequently-used piezoelectric crystals are quartz and piezoelectric ceramics and the like, moistureproof measures are required for some currently-used piezoelectric materials, and output DC response is poor. The piezoelectric accelerometer comprises a sensor pedestal (1), a fixing bolt (2) is installed on the sensor pedestal, the fixing bolt is equipped with two piezoelectric patches (3), and a metal sheet (4) is installed between the piezoelectric patches; and the metal sheet is connected with an output lead (5), the output lead passes through the sensor pedestal, a mass block (6) is installed over the piezoelectric patches, and a pressure-resistant spring (7) is installed on the mass block. The piezoelectric accelerometer is used for accelerometers.
Description
technical field:
the utility model relates to a kind of piezoelectric acceleration transducer.
background technology:
piezoelectric acceleration transducer is piezoelectric effect work based on piezoelectric crystal.Some crystal is on certain orientation during stress deformation, and it is inner can produce polarization phenomena, produces the electric charge that symbol is contrary on its two surfaces simultaneously; After external force is removed, return to again not electriferous state, this phenomenon is called " piezoelectric effect ", and the crystal with " piezoelectric effect " is called piezoelectric crystal.Conventional piezoelectric crystal has quartz, piezoelectric ceramics etc., and some piezoelectric using at present needs moisture preventive measure, and the DC response of output is poor.
summary of the invention:
the purpose of this utility model is to provide a kind of piezoelectric acceleration transducer.
above-mentioned object realizes by following technical scheme:
a kind of piezoelectric acceleration transducer, its composition comprises: sensor base, in described sensor base, set bolt is installed, 2 piezoelectric patches are installed on described set bolt, between described piezoelectric patches, sheet metal is installed, described sheet metal is connected with output lead, and described output lead is through described sensor base, the top of described piezoelectric patches is provided with mass, and damping spring is installed on described mass.
described piezoelectric acceleration transducer, described output lead is encapsulating encapsulation in described sensor base.
described piezoelectric acceleration transducer, described sensor base and shell welding encapsulation.
described piezoelectric acceleration transducer, has screw in described sensor base.
described piezoelectric acceleration transducer, the surface of described piezoelectric patches has silver coating.
beneficial effect:
1. the utility model silver coating on two surfaces of piezoelectric patches, and on silver layer, weld output lead, or press from both sides piece of metal between two piezoelectric patches, lead-in wire is just welded on sheet metal, and another root lead-in wire of output terminal is directly connected with sensor base.On piezoelectric patches, place a mass that proportion is larger, then use a hard spring or bolt, nut to mass preload.Whole assembly is contained in the metal shell of a strong back, in order to isolate any strain transfer of test specimen, to piezoelectric element, goes, and avoids producing glitch output, so generally will add strong back or select the material that rigidity is larger to manufacture.
2. the utility model is when measuring, together with sensor base is rigidly fixed with test specimen.When sensor is experienced vibration, because the rigidity of spring is quite large, and the quality of mass is relatively little, can think that the inertia of mass is very little, therefore mass is experienced the vibration identical with sensor base, and is subject to the inertial force effect with acceleration opposite direction.Like this, mass just has an alternating force that is proportional to acceleration to act on piezoelectric patches.
the utility model is because piezoelectric patches has piezoelectric effect, therefore on its two surfaces, just produced alternation electric charge (voltage), when vibration frequency is during far below sensor natural frequency, the output charge of sensor (voltage) is directly proportional to acting force, is directly proportional to the acceleration of test specimen.Output electric weight is drawn by sensor output terminal, just can measure with common measuring appliance the acceleration of test specimen after being input to prime amplifier.
accompanying drawing explanation:
accompanying drawing 1 is structural representation of the present utility model.
embodiment:
embodiment 1:
a kind of piezoelectric acceleration transducer, its composition comprises: sensor base 1, set bolt 2 is installed in described sensor base, 2 piezoelectric patches 3 are installed on described set bolt, sheet metal 4 is installed between described piezoelectric patches, and described sheet metal is connected with output lead 5, and described output lead is through described sensor base, the top of described piezoelectric patches is provided with mass 6, and damping spring 7 is installed on described mass.
embodiment 2:
according to the piezoelectric acceleration transducer described in embodiment 1, described output lead is encapsulating encapsulation in described sensor base.
embodiment 3:
according to the piezoelectric acceleration transducer described in embodiment 1 or 2, described sensor base and shell 8 welding encapsulation.
embodiment 4:
according to the piezoelectric acceleration transducer described in embodiment 1 or 2, in described sensor base, there is screw.
Claims (5)
1. a piezoelectric acceleration transducer, its composition comprises: sensor base, it is characterized in that: in described sensor base, set bolt is installed, 2 piezoelectric patches are installed on described set bolt, between described piezoelectric patches, sheet metal is installed, described sheet metal is connected with output lead, and described output lead is through described sensor base, the top of described piezoelectric patches is provided with mass, and damping spring is installed on described mass.
2. piezoelectric acceleration transducer according to claim 1, is characterized in that: described output lead is encapsulating encapsulation in described sensor base.
3. piezoelectric acceleration transducer according to claim 1 and 2, is characterized in that: described sensor base and shell welding encapsulation.
4. piezoelectric acceleration transducer according to claim 1 and 2, is characterized in that: in described sensor base, have screw.
5. piezoelectric acceleration transducer according to claim 1 and 2, is characterized in that: the surface of described piezoelectric patches has silver coating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320757744.9U CN203561647U (en) | 2013-11-27 | 2013-11-27 | Piezoelectric accelerometer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320757744.9U CN203561647U (en) | 2013-11-27 | 2013-11-27 | Piezoelectric accelerometer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203561647U true CN203561647U (en) | 2014-04-23 |
Family
ID=50511361
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320757744.9U Expired - Fee Related CN203561647U (en) | 2013-11-27 | 2013-11-27 | Piezoelectric accelerometer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203561647U (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104931730A (en) * | 2015-07-10 | 2015-09-23 | 四川奇胜科技有限公司 | Three-dimensional acceleration sensor |
| CN104950136A (en) * | 2015-07-10 | 2015-09-30 | 四川奇胜科技有限公司 | Piezoelectric acceleration sensor with improved structure |
| CN106083035A (en) * | 2016-06-22 | 2016-11-09 | 刘和来 | A kind of piezoelectric acceleration transducer using nano barium phthalate ceramic standby |
| RU2627571C1 (en) * | 2016-07-13 | 2017-08-08 | федеральное государственное автономное образовательное учреждение высшего образования "Южный федеральный университет" | Piezoelectric accelerometer |
| CN107102160A (en) * | 2017-05-27 | 2017-08-29 | 天府认证有限公司 | The acceleration transducer protected with thermoelectricity |
| CN107238430A (en) * | 2017-05-27 | 2017-10-10 | 天府认证有限公司 | Can noise reduction piezoelectric vibration pickup |
| CN110470373A (en) * | 2019-08-16 | 2019-11-19 | 东南大学 | A kind of two-way bridge vibration monitoring device |
| CN112155584A (en) * | 2020-10-23 | 2021-01-01 | 广州中医药大学第一附属医院 | Individual image positioning diagnosis system for temporal lobe epilepsy-induced focus |
| CN112683385A (en) * | 2020-12-02 | 2021-04-20 | 西南交通大学 | Urban subway bolt device and method for intelligently detecting vibration signals |
| CN112967483A (en) * | 2021-01-26 | 2021-06-15 | 深圳市富天达电子有限公司 | Bluetooth headset capable of timely reminding user of falling off in use process |
-
2013
- 2013-11-27 CN CN201320757744.9U patent/CN203561647U/en not_active Expired - Fee Related
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104931730A (en) * | 2015-07-10 | 2015-09-23 | 四川奇胜科技有限公司 | Three-dimensional acceleration sensor |
| CN104950136A (en) * | 2015-07-10 | 2015-09-30 | 四川奇胜科技有限公司 | Piezoelectric acceleration sensor with improved structure |
| CN106083035A (en) * | 2016-06-22 | 2016-11-09 | 刘和来 | A kind of piezoelectric acceleration transducer using nano barium phthalate ceramic standby |
| CN106083035B (en) * | 2016-06-22 | 2018-11-02 | 刘和来 | A kind of piezoelectric acceleration transducer standby using nano barium phthalate ceramic system |
| RU2627571C1 (en) * | 2016-07-13 | 2017-08-08 | федеральное государственное автономное образовательное учреждение высшего образования "Южный федеральный университет" | Piezoelectric accelerometer |
| CN107102160A (en) * | 2017-05-27 | 2017-08-29 | 天府认证有限公司 | The acceleration transducer protected with thermoelectricity |
| CN107238430A (en) * | 2017-05-27 | 2017-10-10 | 天府认证有限公司 | Can noise reduction piezoelectric vibration pickup |
| CN110470373A (en) * | 2019-08-16 | 2019-11-19 | 东南大学 | A kind of two-way bridge vibration monitoring device |
| CN112155584A (en) * | 2020-10-23 | 2021-01-01 | 广州中医药大学第一附属医院 | Individual image positioning diagnosis system for temporal lobe epilepsy-induced focus |
| CN112683385A (en) * | 2020-12-02 | 2021-04-20 | 西南交通大学 | Urban subway bolt device and method for intelligently detecting vibration signals |
| CN112967483A (en) * | 2021-01-26 | 2021-06-15 | 深圳市富天达电子有限公司 | Bluetooth headset capable of timely reminding user of falling off in use process |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203561647U (en) | Piezoelectric accelerometer | |
| CN103197101A (en) | Non-uniform section cantilever beam piezoelectricity accelerating speed sensor | |
| CN204945164U (en) | A kind of piezoelectric acceleration transducer | |
| CN104820113B (en) | A kind of quartzy twin beams power frequency resonator of integrated temperature sensitive unit | |
| CN106908626B (en) | A kind of capacitance microaccelerator sensitive structure | |
| CN106352862B (en) | A kind of digital differential relaying type micro-acceleration gauge | |
| CN102901841B (en) | Intelligent three-direction acceleration sensor | |
| JP2018025544A (en) | Piezoelectric transducer | |
| JP2018526651A (en) | Device for detecting force and torque | |
| CN104950136A (en) | Piezoelectric acceleration sensor with improved structure | |
| JP2014504364A (en) | High performance curved accelerometer | |
| CN109212262B (en) | High-temperature piezoelectric acceleration sensor based on transverse vibration mode | |
| JP2018516372A (en) | Component transducer and multi-component transducer using the component transducer and use of the multi-component transducer | |
| CN108445257A (en) | A kind of piezoelectric type high G-value shock transducer core | |
| CN204740263U (en) | Acceleration sensor | |
| CN203133110U (en) | Resistance strain type acceleration sensor | |
| CN209417074U (en) | A kind of piezoelectricity velocity sensor | |
| CN103792389A (en) | High-impact piezoelectric accelerometer | |
| CN204945163U (en) | A kind of acceleration transducer | |
| JP2008170203A (en) | Acceleration detection unit and acceleration sensor | |
| CN204286581U (en) | A kind of acceleration transducer | |
| TWM491835U (en) | Electrical measurement device of film type piezoelectric material | |
| CN104931730A (en) | Three-dimensional acceleration sensor | |
| JP6282414B2 (en) | Vibration sensor | |
| JP6920114B2 (en) | Current sensor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140423 Termination date: 20151127 |