CN106853614A - A kind of piezoelectric acceleration sensor piezoelectric system test fixture - Google Patents
A kind of piezoelectric acceleration sensor piezoelectric system test fixture Download PDFInfo
- Publication number
- CN106853614A CN106853614A CN201510905981.9A CN201510905981A CN106853614A CN 106853614 A CN106853614 A CN 106853614A CN 201510905981 A CN201510905981 A CN 201510905981A CN 106853614 A CN106853614 A CN 106853614A
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- China
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- piezoelectric
- acceleration sensor
- groove
- test fixture
- fixed disk
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B11/00—Work holders not covered by any preceding group in the subclass, e.g. magnetic work holders, vacuum work holders
-
- 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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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
Abstract
The invention provides a kind of piezoelectric acceleration sensor piezoelectric system test fixture, including：The installation chassis being fixed on shake table mounting surface；The fixed disk of piezoelectric system is installed；For the bindiny mechanism being slidably mounted on the fixed disk on the installation chassis；With on the fixed disk being electrically connected the electrode of the piezoelectric system and the conductor interface of external test circuitry.Piezoelectric acceleration sensor piezoelectric system test fixture without fixed installation mode can be tested using the present invention, and the piezoelectric system of different appearance and sizes can be tested.
Description
Technical field
The present invention relates to a kind of piezoelectric acceleration sensor piezoelectric system test fixture.
Background technology
Piezoelectric acceleration transducer is a kind of sensor for vibrations such as measuring apparatus, objects, is the most wide vibration class sensor of range of application.Especially for the environment temperatures such as Aeronautics and Astronautics, nuclear energy application scenario very high, piezoelectric acceleration transducer is irreplaceable selection.
When piezoelectric acceleration sensor is assembled, piezoelectric element, mass, nut etc. are fixed on base first, form quality-component of piezoelectric conversion system（Hereinafter referred to as piezoelectric system）, complete piezoelectric acceleration sensor is then assembled into shell again.Piezoelectric acceleration sensor assemble after by carry out performance test, such as performance is unqualified, typically takes apart and ressembles to qualified, and the process for so taking refitting apart wastes time and energy；Especially when assembling mode is the situation of welding between piezoelectric system and shell, such as high-temperature piezoelectric acceleration transducer, its performance parameter is numerous, as a performance is unqualified, whole sensor will be judged as unqualified, but due to that can only be that destructiveness is disassembled to metal welding, therefore cannot take apart and ressemble, can only scrap, very big waste, and influence yield rate can so be caused.
The performance of piezoelectric acceleration sensor is mainly what is determined by piezoelectric system, qualified subsequently to be assembled again so if carry out advance performance test to piezoelectric system, can thus improve yield rate, reduces manpower and materials and wastes.But for piezoelectric system, lead and the subsequent detection circuit of its output signal cannot be directly connected to, detection is difficult；Especially without the piezoelectric system of fixed installation mode, cannot be arranged at all and performance detection is realized on shaking platform.
The content of the invention
For above-mentioned problem, the technical problems to be solved by the invention are that offer is a kind of can test the piezoelectric acceleration sensor piezoelectric system test fixture without fixed installation mode, and can test the piezoelectric system of different appearance and sizes.
In order to solve the above-mentioned technical problem, the piezoelectric acceleration sensor piezoelectric system test fixture that the present invention is provided includes：The installation chassis being fixed on shake table mounting surface；The fixed disk of piezoelectric system is installed；For the bindiny mechanism being slidably mounted on the fixed disk on the installation chassis；With on the fixed disk being electrically connected the electrode of the piezoelectric system and the conductor interface of external test circuitry.
According to the present invention, test fixture of the invention is simple and convenient, the test to the piezoelectric system without fixed installation mode and different appearance and sizes can be realized, so as to improve the production efficiency of piezoelectric acceleration sensor.
Also, in the present invention, or, the bindiny mechanism include groove in the installation chassis, the sliding bar that is slided through the fixed disk and in the groove and for the sliding bar to be fixed on into the groove in fastening member.
According to the present invention, sliding bar be may be used to fix fixed disk and piezoelectric system, and the sliding bar can be slided in groove, and drive fixed disk to be moved to different positions.
Also, in the present invention, or, the groove is formed as the section of "convex" shaped.
According to the present invention, slip and fixation of the sliding bar in the groove can be conducive to.
Also, in the present invention, or, the fastening member includes the nut in the groove, and the outer dia of the nut is same as or slightly smaller than the lower width of the groove with the lower width of the groove.
According to the present invention it is possible to nut is engaged with sliding bar, to fix fixed disk and piezoelectric system.
Also, in the present invention, or, the groove is formed with multiple in the installation chassis, and circular array is arranged.
According to the present invention, can be conducive to making fixed disk be moved to different positions.
Also, in the present invention, or, the sliding bar is formed as " T " font, and " one " the font portion in " T " font is located at outside the fixed disk, and " 1 " font portion in " T " font is through the fixed disk and in the groove.
According to the present invention, can be conducive to for fixed disk being attached to installation chassis.
Also, in the present invention, or, the conductor interface include and external test circuitry the connected contact pin of wire and the jack for being directly connected to contact pin and being connected with the electrode of the piezoelectric system.
According to the present invention it is possible to piezoelectric system output signal is delivered into external test circuitry.
Also, in the present invention, or, the conductor interface is formed as the interface shape matched with the wire, and the jack is formed as cylinder type, and using splitting the structure of groove or necking.
According to the present invention, the lead of piezoelectric system can be affixed directly on conductor interface, without welding, be completed and directly taken out, convenient and simple.
Also, in the present invention, or, the material of the fixed disk is the steel of high elastic modulus, and the fixed disk is formed as being made up of the monolithic of three annular arrays, and three monolithics constitute a closed annulars.
According to the present invention, the fixed disk is widely portable to various outer diameter size（In certain limit）Piezoelectric system, without changing various sizes of fixed disk according to piezoelectric element.
According to following specific embodiments and refer to the attached drawing, the above of the invention and other objects, features and advantages are better understood with.
Brief description of the drawings
Fig. 1 is the stereogram of the piezoelectric acceleration sensor piezoelectric system test fixture according to an embodiment of the invention；
Fig. 2 is another view stereo figure of the test fixture shown in Fig. 1；
Fig. 3 is the use state sectional view of the groove in the test fixture shown in Fig. 1；
Fig. 4 is the use state schematic diagram of the test fixture shown in Fig. 1；
Reference：
1 installation chassis；
2 fixed disks；
3 sliding bars；
4 nuts；
5 conductor interfaces；
6 installation through-holes；
7 grooves；
8 contact pins；
9 jacks；
10 installation screws；
11 piezoelectric systems；
12 electrodes；
13 pedestals；
14 piezoelectricity groups.
Specific embodiment
Specific embodiment of the invention is described in detail below in conjunction with accompanying drawing.It should be appreciated that specific embodiment described herein is merely to illustrate and explain the present invention, it is not intended to limit the invention.
In order to overcome defect of the prior art, the invention provides a kind of piezoelectric acceleration sensor piezoelectric system test fixture, including：The installation chassis being fixed on shake table mounting surface；The fixed disk of piezoelectric system is installed；For the bindiny mechanism being slidably mounted on the fixed disk on the installation chassis；With on the fixed disk being electrically connected the electrode of the piezoelectric system and the conductor interface of external test circuitry.
Test fixture of the invention, it is simple and convenient, the test to the piezoelectric system without fixed installation mode and different appearance and sizes can be realized, so as to improve the production efficiency of piezoelectric acceleration sensor.
Fig. 1 to Fig. 4 shows the piezoelectric acceleration sensor piezoelectric system test fixture according to an embodiment of the invention.Wherein, Fig. 1 is the stereogram of the piezoelectric acceleration sensor piezoelectric system test fixture；Fig. 2 is another view stereo figure of the test fixture shown in Fig. 1；Fig. 3 is the use state sectional view of the groove in the test fixture shown in Fig. 1；Fig. 4 is the use state schematic diagram of the test fixture shown in Fig. 1.
Specifically, piezoelectric acceleration sensor piezoelectric system test fixture of the invention, including：Installation chassis 1, fixed disk 2, sliding bar 3, nut 4 and conductor interface 5；Installation screw 10 or installation through-hole 6 are provided with the installation chassis 1, are used to be fixed on installation chassis 1 on shake table mounting surface；The groove 7 of the "convex" shaped of annular array is also provided with the installation chassis 1；The sliding bar 3 is T-shaped, and " one " portion of T-shape is located at outside fixed disk 2, and " 1 " portion of T-shape is located in the groove 7 of installation chassis 1 through fixed disk 2；There is screw thread the one end of the sliding bar 3, coordinates with nut 4, is used to fix fixed disk 2 and piezoelectric system 11；The sliding bar 3 can be slided in the groove 7 of convex shape, and drive fixed disk 2 to be moved to different positions；The conductor interface 5, its contact pin 8 can be connected with wire, and the jack 9 being directly connected to contact pin 8 can be connected with the electrode 12 of piezoelectric system 11, and and casing insulation, it is electrically connected with piezoelectric system 11 by binding post, the output signal of piezoelectric system 11 is delivered to external test circuitry.
Preferably, the lower surface circular array of the installation chassis 1 of the test fixture shows three grooves of "convex" shaped 7.
Preferably, the material of the fixed disk 2 is the steel of high elastic modulus, is three monolithic compositions of annular array, and three monolithics constitute a closed annular.
Preferably, there is screw thread one end of the sliding bar 3, coordinates with nut 4, and piezoelectric system 11 is fixed using rigid connection；Its outer dia of the nut 4 is same as or slightly smaller than groove lower width with the lower width of groove 7.
Preferably, the conductor interface 5 can be Single-end output formula according to the structure type of sensor, or differential type, and using the interface shape matched with follow-up wire；The conductor interface 5 its contact pin 8, jack 9 use highly elastic material, and surface is coated with high conductivity material（Such as gold）；Its jack 9 of the conductor interface 5 is cylinder type, and the structures such as groove, necking are split in use.
Due to above-mentioned technical proposal, the present invention has following advantages compared with prior art：
Test fixture of the invention, in use, piezoelectric system 11 can be fixed on installation chassis 1 with fixed disk 2, sliding bar 3, nut 4, and be rigidly connected by installation chassis 1 and shake table installation table top, the output lead of piezoelectric system 11 directly can be connected by conductor interface 5 with subsequent detection circuit, so as to realize the performance detection to piezoelectric system 11, install and easy removal, have installation fixed form without piezoelectric system；The sliding bar 3 of the test fixture can be in groove 7 slidably simultaneously, and adjusting the size of fixed disk 2 needs the piezoelectric system 11 of test to match, so as to realize the test to the piezoelectric system 11 of different appearance and sizes.
The present invention is further described by specific embodiment below in conjunction with accompanying drawing.
As shown in Figure 1 and Figure 2, the piezoelectric acceleration sensor piezoelectric system test fixture, including installation chassis 1, fixed disk 2, sliding bar 3, nut 4 and conductor interface 5；Installation screw 10 or installation through-hole 6 are provided with the installation chassis 1, are used to be fixed on installation chassis 1 on shake table mounting surface；Three grooves of "convex" shaped 7 are also provided with the installation chassis 1；There is screw thread the one end of the sliding bar 3, coordinates with nut 4 in groove 7, is used to fix fixed disk 2 and piezoelectric system 11；Its outer dia of the nut 4 is same as or slightly smaller than the lower width of groove 7 with the lower width of groove 7；The sliding bar 3 can be slided in groove 7, and drive fixed disk 2 to be moved to different positions；The conductor interface 5, its contact pin 8 can be connected with wire, and direct with contact pin 8 jacks 9 being connected can be connected with the electrode 12 of piezoelectric system 11, and piezoelectric system output signal is delivered into external test circuitry.
As shown in Figure 3, Figure 4, when using, unscrew sliding bar 3 first, fixed disk 2 to correct position is displaced outwardly upwards, piezoelectric system 11 is placed on the center position of installation chassis 1, move inward fixed disk 2, make the inner circle of fixed disk 2 just block or piezoelectricity group 14 slightly larger than piezoelectric system 11 external diameter, sliding bar 3 is tightened still further below, fixed disk 2 is pressed on the pedestal 13 of piezoelectric system 11, finally the electrode 12 of piezoelectric system 11 is inserted at jack 9, that is, completes assembling.During test, mounted test fixture is fixed on shake table mounting surface by the installation screw 10 or installation through-hole 6 on installation chassis 1, external test circuitry wire is connected with conductor interface 5, you can tested.After completing test, electrode 12 need to only be extracted out from jack 9, unscrew sliding bar, fixed disk is displaced outwardly upwards, you can take out piezoelectric system.
Under the objective for not departing from essential characteristic of the invention, the present invention can be presented as diversified forms, therefore the embodiment in the present invention is to be illustrative rather than definitive thereof, because the scope of the present invention is defined by the claims rather than is limited by specification, and all changes fallen in the scope defined in claim, or the full scope of equivalents of its scope for defining are understood to include in detail in the claims.
Claims (9)
1. a kind of piezoelectric acceleration sensor piezoelectric system test fixture, it is characterised in that including：
The installation chassis being fixed on shake table mounting surface；
The fixed disk of piezoelectric system is installed；
For the bindiny mechanism being slidably mounted on the fixed disk on the installation chassis；With
Being electrically connected the electrode of the piezoelectric system and the conductor interface of external test circuitry on the fixed disk.
2. piezoelectric acceleration sensor piezoelectric system test fixture according to claim 1, characterized in that, the bindiny mechanism include groove in the installation chassis, the sliding bar that is slided through the fixed disk and in the groove and for the sliding bar to be fixed on into the groove in fastening member.
3. piezoelectric acceleration sensor piezoelectric system test fixture according to claim 2, it is characterised in that the groove is formed as the section of "convex" shaped.
4. piezoelectric acceleration sensor piezoelectric system test fixture according to claim 3, it is characterized in that, the fastening member includes the nut in the groove, and the outer dia of the nut is same as or slightly smaller than the lower width of the groove with the lower width of the groove.
5. the piezoelectric acceleration sensor piezoelectric system test fixture according to any one of claim 2 to 4, it is characterised in that the groove is formed with multiple in the installation chassis, and circular array is arranged.
6. piezoelectric acceleration sensor piezoelectric system test fixture according to claim 2, it is characterized in that, the sliding bar is formed as " T " font, " one " font portion in " T " font is located at outside the fixed disk, and " 1 " the font portion in " T " font is through the fixed disk and is located in the groove.
7. piezoelectric acceleration sensor piezoelectric system test fixture according to any one of claim 1 to 6, characterized in that, the conductor interface includes the contact pin connected with the wire of external test circuitry and the jack for being directly connected to contact pin and being connected with the electrode of the piezoelectric system.
8. piezoelectric acceleration sensor piezoelectric system test fixture according to claim 7, it is characterised in that the conductor interface is formed as the interface shape matched with the wire, the jack is formed as cylinder type, and using splitting the structure of groove or necking.
9. piezoelectric acceleration sensor piezoelectric system test fixture according to any one of claim 1 to 8, it is characterized in that, the material of the fixed disk is the steel of high elastic modulus, and the fixed disk is formed as being made up of the monolithic of three annular arrays, and three monolithics constitute a closed annular.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510905981.9A CN106853614B (en) | 2015-12-09 | 2015-12-09 | A kind of piezoelectric acceleration sensor piezoelectric system test fixture |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510905981.9A CN106853614B (en) | 2015-12-09 | 2015-12-09 | A kind of piezoelectric acceleration sensor piezoelectric system test fixture |
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| Publication Number | Publication Date |
|---|---|
| CN106853614A true CN106853614A (en) | 2017-06-16 |
| CN106853614B CN106853614B (en) | 2019-04-16 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510905981.9A Active CN106853614B (en) | 2015-12-09 | 2015-12-09 | A kind of piezoelectric acceleration sensor piezoelectric system test fixture |
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| CN (1) | CN106853614B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111551759A (en) * | 2020-04-13 | 2020-08-18 | 中国电子科技集团公司第四十九研究所 | Test fixture for hot film type wind speed sensor unit |
| CN113252264A (en) * | 2021-04-27 | 2021-08-13 | 广州兴森快捷电路科技有限公司 | Test tool |
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| CN111551759A (en) * | 2020-04-13 | 2020-08-18 | 中国电子科技集团公司第四十九研究所 | Test fixture for hot film type wind speed sensor unit |
| CN113252264A (en) * | 2021-04-27 | 2021-08-13 | 广州兴森快捷电路科技有限公司 | Test tool |
| CN113252264B (en) * | 2021-04-27 | 2023-09-29 | 广州市兴森电子有限公司 | Test fixture |
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| Publication number | Publication date |
|---|---|
| CN106853614B (en) | 2019-04-16 |
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