CN209417074U - A kind of piezoelectricity velocity sensor - Google Patents
A kind of piezoelectricity velocity sensor Download PDFInfo
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- CN209417074U CN209417074U CN201822223885.8U CN201822223885U CN209417074U CN 209417074 U CN209417074 U CN 209417074U CN 201822223885 U CN201822223885 U CN 201822223885U CN 209417074 U CN209417074 U CN 209417074U
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- China
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- piezoelectric ceramics
- mass block
- circuit plate
- piezoelectricity
- inner core
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Abstract
The utility model relates to a kind of piezoelectricity velocity sensors, including integrating amplification circuit plate, shell, interior base, inner casing, insulation spacer, outer base, piezoelectric ceramics, mass block, conducting wire and connector.Piezoelectric ceramics is mounted on interior base center column, and mass block is mounted on piezoelectric ceramics, on the centrally disposed cylinder of electrode and mass block.Electrode is connect by conducting wire with integrating circuit plate, and interior base and mass block, piezoelectric ceramics, inner casing, integrating circuit plate, conducting wire form inner core-body, forms shielding construction.Inner core-body bottom used outside insulated gasket is connected at housing center.Inner core-body integrating amplification circuit plate output line is connect through inner casing central small hole with connector, and on the shell, shell is mounted in outer base connector, forms double shield structure.The utility model inner core-body structure is simple, and assembly is simple, small in size, double shield structure strong antijamming capability.
Description
Technical field
The utility model relates to sensor fields, refer in particular to piezoelectric transducer, especially a kind of piezoelectricity velocity sensor.
Background technique
Piezoelectricity velocity sensor is a kind of sensor that can directly measure vibration velocity.Its principle is piezoelectric element just
Under the action of piezoelectric effect, when sensor sensing is to when vibration, mass block acts on the power of piezoelectricity original part while changing,
The charge and acceleration value proportional relation that piezoelectric ceramics generates, charge is after wire transmission to rear end integrating amplification circuit plate processing
It is then converted into voltage output relevant to vibration velocity amount, achievees the effect that measure vibration velocity.
Currently, most of piezoelectricity velocity sensor on the market, structure is complicated for inner core-body, and volume is larger, assembly technology
Complex steps, and higher cost, since piezoelectricity velocity sensor is for measuring vibration velocity, so its most of application is
Industry spot, industrial environment is complicated, and various electromagnetic interferences are more, and traditional structure model causes measurement to tie vulnerable to influence
Fruit error is larger.
Utility model content
For the utility model in order to solve the deficiency embodied in above-mentioned technical background, vibration speed can directly be measured by providing one kind
The piezoelectricity velocity sensor of degree.Its structure is simple, and assembly is simple, small in size, strong antijamming capability.
A kind of piezoelectricity velocity sensor of the utility model includes including integrating amplification circuit plate, shell, interior base, interior
Shell, insulation spacer, outer base, connector, piezoelectric ceramics, mass block, conducting wire and connector.The piezoelectric ceramics is cyclic annular and center
Symmetrical structure.The mass block is cyclic annular and centrosymmetric structure.Positive and negative electrode is respectively placed in mass block and interior base, electrode
Welding is directly electrically connected through conducting wire and integrating amplification circuit plate, is exported by conducting wire, integrating amplification circuit plate output lead warp
Inner casing central small hole is pierced by, and inner casing is mounted in interior base, forms inner core-body.Bonding with mass block and interior base group of piezoelectric element
At charge output element, due to its circular nature, space utilization rate increases, so that sensor overall volume is reduced, assembly is simple.
Further, inner core-body bottom is adhesively fixed with shell by epoxy glue through insulation spacer.Inner core-body, outer bottom
Seat, insulation spacer center is in a straight line.Inner core-body output lead is connect with connector, and connector setting is installed on the shell,
Shell is mounted in outer base, forms double shield structure.Enhance its anti-interference ability, greatly guarantee measurement result accuracy.
Further, in the present invention, the mass block and piezoelectric ceramics are cyclic annular and centrosymmetric structure, on an equal basis
In the case of charge sensitivity, guarantee that its volume is smaller.
Further, in the present invention, the positive and negative electrode connect output with conducting wire using direct welding manner.
Further, in the present invention, piezoelectric ceramics and interior base, mass block are directly connected to piezoelectric ceramics, are not necessarily to
Fastener, structure is simple, and assembly is simple.
Further, in the present invention, the interior base cylinder diameter is 2.5-3.5mm.
Further, in the present invention, the mass block internal diameter is 4-5mm.
Further, in the present invention, the mass block and inner casing spacing are 0.75-1.5mm.
Further, in the present invention, the inner core-body is connect through insulation spacer with outer base, and shell is mounted on outer bottom
On seat, connector is installed on the shell, is formed double shield structure, is guaranteed its strong anti-interference ability.
Detailed description of the invention:
Fig. 1 is the utility model sensor structure figure.
Wherein, 1- connector, 2- shell, 3- conducting wire, 4- inner casing, 5- integrating amplification circuit plate, 6- mass block, 7- piezoelectricity pottery
Porcelain, 8- interior base, 9- insulation spacer, 10- outer base.
Specific embodiment
The utility model specific implementation is described in further detail below in conjunction with attached drawing.
Fig. 1 is a kind of structural schematic diagram of the piezoelectricity velocity sensor of implementation form of the utility model.As shown in Figure 1,
The utility model is a kind of shearing piezoelectricity velocity sensor of annular, comprising: connector 1, shell 2, conducting wire 3, inner casing 4, integral are put
Large circuit board 5, mass block 6, piezoelectric ceramics 7, interior base 8, insulation spacer 9, outer base 10.Specifically, in the present invention,
Symmetrical ring structure centered on piezoelectric ceramics 7, with mass block 6 by epoxy glue it is Nian Jie mutually after be bonded in interior base 8, and with
Integrating amplification circuit plate 5 is electrically connected.Inner casing 4 is mounted in interior base 8, and is accommodated aforementioned each device and constituted inner core-body, inner core
Volume divides 5 output lead 3 of magnification circuit plate to stretch out by 4 central small hole of inner casing,.After inner core-body is mutually Nian Jie with insulation spacer 9 again
Nian Jie with outer base 10 to contact, shell 2 is mounted in outer base 10, and connector 1 is mounted on shell 10, to form double layer screen
Structure plays the role of protection and shielding interference effect.
When vibrated, the power that mass block 6 is applied on piezoelectric ceramics 7 changes therewith, to generate charge on piezoelectric ceramics 7
Signal, and integrating amplification circuit plate 5 is transferred to by electrode cable, the outer speed of conversion is relevant after integrated magnification circuit plate processing
Voltage output, gets to the effect of measurement vibration velocity.
Inner core-body annular and shielding construction in the utility model, so that the utility model is compact-sized, assembly parts list is not required to
Nut or the fixation of other fasteners can be used colloid and be directly bonded.The high symmetry of double shield structure and its inner core-body simultaneously
So that its structure is simple, assembly is simple, small in size, strong antijamming capability.
The above-described preferred embodiment for the utility model, it is all to be set according to this case not to the limitation of this case design
The crucial same variation done of meter, each falls within this case protection scope.
Claims (6)
1. a kind of piezoelectricity velocity sensor, it is characterised in that: including integrating amplification circuit plate, shell, interior base, inner casing, insulation
Gasket, outer base, piezoelectric ceramics, mass block, conducting wire and connector；Piezoelectric ceramics is mounted on interior base center column, quality
Block is connected on piezoelectric ceramics；Mass block and center column are two electrodes, and electrode is connect through conducting wire with integrating amplification circuit plate, product
Point magnification circuit plate is located in mass top surface, and interior base and mass block, inner casing, integrating amplification circuit plate, are led at piezoelectric ceramics
Line forms inner core-body, and insulation spacer is bonded at outer base center, and inner core-body is bonded at insulation spacer center, inner core-body integral
Magnification circuit plate output lead is connected through inner casing upper end center circular hole with connector, and connector connects in shell, shell and outer base phase
Connection.
2. a kind of piezoelectricity velocity sensor as described in claim 1, which is characterized in that the mass block is annular and internal diameter ruler
Very little is 4-5mm.
3. a kind of piezoelectricity velocity sensor as described in claim 1, which is characterized in that the interior base cylinder diameter is
2.5-3.5mm。
4. a kind of piezoelectricity velocity sensor as described in claim 1, which is characterized in that the piezoelectric ceramics and interior base column
Body, mass block are Nian Jie by colloid with piezoelectric ceramics.
5. a kind of piezoelectricity velocity sensor as described in claim 1, which is characterized in that the mass block is with inner casing spacing
0.75-1.5mm。
6. a kind of piezoelectricity velocity sensor as described in claim 1, which is characterized in that through exhausted between the inner core-body and shell
Edge gasket is bonded with epoxy glue, forms double shield structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822223885.8U CN209417074U (en) | 2018-12-28 | 2018-12-28 | A kind of piezoelectricity velocity sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822223885.8U CN209417074U (en) | 2018-12-28 | 2018-12-28 | A kind of piezoelectricity velocity sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209417074U true CN209417074U (en) | 2019-09-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN201822223885.8U Active CN209417074U (en) | 2018-12-28 | 2018-12-28 | A kind of piezoelectricity velocity sensor |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112857558A (en) * | 2021-01-08 | 2021-05-28 | 山东科大机电科技股份有限公司 | Structure of vibration sensing equipment and anti-interference method of sensing equipment |
| CN114858268A (en) * | 2022-04-14 | 2022-08-05 | 厦门乃尔电子有限公司 | Vibration sensor and preparation method thereof |
| CN117825747A (en) * | 2024-03-04 | 2024-04-05 | 山东利恩斯智能科技有限公司 | Acceleration sensor with central mass block and working method thereof |
-
2018
- 2018-12-28 CN CN201822223885.8U patent/CN209417074U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112857558A (en) * | 2021-01-08 | 2021-05-28 | 山东科大机电科技股份有限公司 | Structure of vibration sensing equipment and anti-interference method of sensing equipment |
| CN114858268A (en) * | 2022-04-14 | 2022-08-05 | 厦门乃尔电子有限公司 | Vibration sensor and preparation method thereof |
| CN117825747A (en) * | 2024-03-04 | 2024-04-05 | 山东利恩斯智能科技有限公司 | Acceleration sensor with central mass block and working method thereof |
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