CN106771364A - A kind of piezoelectric accelerometer examines and determine installs fixture - Google Patents
A kind of piezoelectric accelerometer examines and determine installs fixture Download PDFInfo
- Publication number
- CN106771364A CN106771364A CN201611161263.6A CN201611161263A CN106771364A CN 106771364 A CN106771364 A CN 106771364A CN 201611161263 A CN201611161263 A CN 201611161263A CN 106771364 A CN106771364 A CN 106771364A
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- China
- Prior art keywords
- screw
- end plate
- draw
- groove
- piezoelectric accelerometer
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
- G01P21/00—Testing or calibrating of apparatus or devices covered by the preceding groups
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
Abstract
The invention belongs to piezoelectric accelerometer Calibration Technology field, it is related to examine and determine piezoelectric accelerometer the invention of installs fixture.Described fixture includes end plate (1), screw and draw-in groove, end plate (1) is circle, end plate (1) side center is fixed with screw (2), and with vibration table surface screw coaxial cooperation, opposite side is fixed with screw and draw-in groove.Compared with prior art, it is to avoid due to being installed using double faced adhesive tape and beeswax, the defect that the fixing resonance frequency brought reduces, and can complete three calibratings of piezoelectric accelerometer in the same time improves operating efficiency to draw-in groove type piezoelectric accelerometer.
Description
Technical field
The invention belongs to piezoelectric accelerometer Calibration Technology field, it is related to examine and determine piezoelectric accelerometer the hair of installs fixture
It is bright.
Background technology
Piezoelectric accelerometer calibrating installation is generally by shake table, charge amplifier, normative reference accelerometer, analysis/control
System processed and power amplifier are constituted.《JJG233-2008 piezoelectric accelerometer vertification regulations》It is middle to require that tested accelerometer is firm
Property ground be arranged on vibration table surface, conventional piezoelectric accelerometer is general two kinds of contour structures, respectively screw mount type and
Draw-in groove type, calibrating is completed by installing on a vibration table.The reserved structure of the existing shake table installation surface in market is screw,
Suitable for screw mount type accelerometer.Draw-in groove type accelerometer is often installed due to reasons in structure using double faced adhesive tape and beeswax, and
Piezoelectric accelerometer structure shows that the size of fixing resonance frequency is related to joint stiffness, the more big then fixing resonance of joint stiffness
Frequency is bigger.When natural resonance frequency of the fixing resonance frequency less than accelerometer, the reduction of its high frequency response scope, influence inspection
Determine result.
On the other hand, existing shake table can only once install a piezoelectric accelerometer, greatly affected calibrating effect
Rate.
The content of the invention
The purpose of the present invention：A kind of piezoelectric accelerometer calibrating installs fixture, compatible screw mount type and draw-in groove are provided
Two kinds of piezoelectric accelerometers of contour structures such as type, make accelerometer keep being rigidly connected with vibration table, improve fixing resonance
Frequency.
Technical scheme：A kind of piezoelectric accelerometer examines and determine installs fixture, it is characterized by：Described fixture includes
End plate 1, screw and draw-in groove, end plate 1 are circle, and the side center of end plate 1 is fixed with screw 2, same with vibration table surface screw
Axle coordinates, and opposite side is fixed with screw and draw-in groove.
Preferably, end plate 1 is provided with the side of screw and draw-in groove simultaneously includes three screws and three draw-in grooves, screw (3,
4th, 5) each into 120 ° between the center of circle of end plate projection and end plate central line, draw-in groove (6,7,8) is perpendicular to the several of end plate
What is each into 120 ° between center and end plate central line.
Preferably, the screw that end plate 1 is reserved with vibration table surface is rigidly connected by screw 2.
Preferably, vibration table side is provided with fixture, and opposite side is provided with normative reference accelerometer, by tested acceleration
Degree meter is installed on the screw on fixture (3,4,5) or draw-in groove (6,7,8).
Beneficial effects of the present invention：Compared with prior art, it is to avoid draw-in groove type piezoelectric accelerometer is due to using two-sided
Glue and beeswax are installed, the defect that the fixing resonance frequency brought reduces, and can complete three piezoelectric accelerometers in the same time
Calibrating, improve operating efficiency.
Brief description of the drawings
Fig. 1 is structural representation of the invention；
Fig. 2 is calibrating connection diagram；
Fig. 3 front view of the invention.
Specific embodiment
This is described in further details to the present invention below.The technical problem to be solved in the present invention is:Overcome shake table former
There is structure to being detected the limitation that accelerometer is installed.A kind of piezoelectric accelerometer calibrating installs fixture is provided, fixing resonance is improved
Frequency and calibrating efficiency.
Referring to Fig. 1 and 3, a kind of piezoelectric accelerometer examines and determine installs fixture, it is characterized by：Described fixture include end plate 1,
Screw and draw-in groove, end plate 1 are circle, and the side center of end plate 1 is fixed with screw 2, and vibration table surface screw coaxial cooperation,
Opposite side is fixed with screw and draw-in groove.
End plate 1 is provided with screw and the side of draw-in groove simultaneously includes three screws and three draw-in grooves, and screw (3,4,5) is vertical
It is each into 120 ° between the center of circle of end plate projection and end plate central line, draw-in groove (6,7,8) perpendicular to end plate geometric center with
It is each into 120 ° between end plate central line.Ensure that tested accelerometer bears uniformity phase in the unattenuated situation of shake table energy
Same vibrational energy amplitude.
The screw that end plate 1 is reserved with vibration table surface is rigidly connected by screw 2.Fixing resonance frequency is improved, is improved
High frequency is corresponding, improves calibration accuracy.
Vibration table side is provided with fixture, and opposite side is provided with normative reference accelerometer, by tested accelerometer peace
Loaded on the screw (3,4,5) or draw-in groove (6,7,8) on fixture.Shake table exports acceleration amplitude signal, is detected accelerometer
With the acceleration that normative reference accelerometer bears identical amplitude, complete to examine and determine by comparison method.
It is one embodiment of the present of invention referring to Fig. 2.End plate 1 is screwed by screw 2 and is installed on vibration table surface, when
During calibrating screw mount type accelerometer, while 3 tested accelerometers are installed on screw (3,4,5)；When calibrating draw-in groove
During type accelerometer, 3 tested accelerometers can be equally installed on draw-in groove (6,7,8) simultaneously, be detected accelerometer with reference
Standard accelerometer is rigidly mounted together back-to-back.Reference acceleration meter signal input to electric charge is amplified with transmission cable
Device, then exports to dynamic signal analyzer.When tested accelerometer is electric charge output type, its signal always connects electric charge amplification
Device, then connect dynamic signal analyzer；When tested accelerometer is voltage output type, dynamic signal analyzer is directly connect.Confirm
All wiring are correct, can press rearward《JJG233-2008 piezoelectric accelerometer vertification regulations》Carry out calibration operation.
Claims (4)
1. a kind of piezoelectric accelerometer examines and determine installs fixture, it is characterized by：Described fixture includes end plate (1), screw and draw-in groove,
End plate (1) is circle, and end plate (1) side center is fixed with screw (2), and vibration table surface screw coaxial cooperation, another
Side is fixed with screw and draw-in groove.
2. a kind of piezoelectric accelerometer according to claim 1 examines and determine installs fixture, it is characterized by：End plate (1) is while peace
Side equipped with screw and draw-in groove includes three screws and three draw-in grooves, the center of circle that screw (3,4,5) project perpendicular to end plate and
Each into 120 ° between end plate central line, draw-in groove (6,7,8) is each between the geometric center and end plate central line of end plate
Into 120 °.
3. a kind of piezoelectric accelerometer according to claim 1 examines and determine installs fixture, it is characterized by：Will by screw (2)
The screw that end plate (1) is reserved with vibration table surface is rigidly connected.
4. a kind of piezoelectric accelerometer according to claim 1 examines and determine installs fixture, it is characterized by：Pacify vibration table side
Equipped with fixture, opposite side is provided with normative reference accelerometer, and tested accelerometer is installed on the screw (3,4,5) on fixture
Or on draw-in groove (6,7,8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611161263.6A CN106771364A (en) | 2016-12-15 | 2016-12-15 | A kind of piezoelectric accelerometer examines and determine installs fixture |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611161263.6A CN106771364A (en) | 2016-12-15 | 2016-12-15 | A kind of piezoelectric accelerometer examines and determine installs fixture |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106771364A true CN106771364A (en) | 2017-05-31 |
Family
ID=58891356
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611161263.6A Pending CN106771364A (en) | 2016-12-15 | 2016-12-15 | A kind of piezoelectric accelerometer examines and determine installs fixture |
Country Status (1)
| Country | Link |
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| CN (1) | CN106771364A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108036855A (en) * | 2018-01-09 | 2018-05-15 | 广东电网有限责任公司电力科学研究院 | A kind of table top assembly |
| CN109697269A (en) * | 2018-12-24 | 2019-04-30 | 中国航空工业集团公司西安飞机设计研究所 | The method of minimum diameter of bolt hole needed for being calculated in flange form connection |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5295387A (en) * | 1992-03-23 | 1994-03-22 | Delco Electronics Corp. | Active resistor trimming of accelerometer circuit |
| CN103513060A (en) * | 2012-06-28 | 2014-01-15 | 洛阳市重冶矿山机械有限公司 | Method for converting PR9270 type vibration exciter into piezoelectric accelerometer calibrator |
| CN204007661U (en) * | 2014-06-17 | 2014-12-10 | 佛山科学技术学院 | A kind of novel holding clamp |
-
2016
- 2016-12-15 CN CN201611161263.6A patent/CN106771364A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5295387A (en) * | 1992-03-23 | 1994-03-22 | Delco Electronics Corp. | Active resistor trimming of accelerometer circuit |
| CN103513060A (en) * | 2012-06-28 | 2014-01-15 | 洛阳市重冶矿山机械有限公司 | Method for converting PR9270 type vibration exciter into piezoelectric accelerometer calibrator |
| CN204007661U (en) * | 2014-06-17 | 2014-12-10 | 佛山科学技术学院 | A kind of novel holding clamp |
Non-Patent Citations (1)
| Title |
|---|
| 朱丽等: "机载振动传感器校准技术研究", 《电子测量技术》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108036855A (en) * | 2018-01-09 | 2018-05-15 | 广东电网有限责任公司电力科学研究院 | A kind of table top assembly |
| CN109697269A (en) * | 2018-12-24 | 2019-04-30 | 中国航空工业集团公司西安飞机设计研究所 | The method of minimum diameter of bolt hole needed for being calculated in flange form connection |
| CN109697269B (en) * | 2018-12-24 | 2023-05-23 | 中国航空工业集团公司西安飞机设计研究所 | Method for calculating required minimum bolt hole diameter in flange connection |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170531 |
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| RJ01 | Rejection of invention patent application after publication |