CN209485591U - A kind of dynamic surface pressure sensor - Google Patents
A kind of dynamic surface pressure sensor Download PDFInfo
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- CN209485591U CN209485591U CN201920376846.3U CN201920376846U CN209485591U CN 209485591 U CN209485591 U CN 209485591U CN 201920376846 U CN201920376846 U CN 201920376846U CN 209485591 U CN209485591 U CN 209485591U
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- piezoelectric crystal
- stainless steel
- steel casing
- crystal plate
- pressure sensor
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Abstract
The utility model discloses a kind of dynamic surface pressure sensors, including stainless steel casing, sensitive area diaphragm, piezoelectric crystal plate, conductive sheet and signal wire, the stainless steel casing is provided with opening, the sensitive area diaphragm is fixed at opening, the piezoelectric crystal plate is provided with two layers, respectively upper piezoelectric crystal plate and lower piezoelectric crystal wafer, the lower piezoelectric crystal wafer is laid on stainless steel casing inner bottom surface, the upper piezoelectric crystal plate is laid on lower piezoelectric crystal wafer upper surface, and it offsets with sensitive area diaphragm, the conductive sheet is arranged between two layers of piezoelectric crystal plate, insulated ring is provided between the piezoelectric crystal plate and shell, the signal wire is connected with conductive sheet either end, and sequentially pass through insulated ring and stainless steel casing setting.Dynamic surface pressure sensor structure provided by the utility model is simple, and high sensitivity, and test frequency is up to 80KHz or more, the pressure test that can be used in Exploding test.
Description
Technical field
The utility model relates to pressure sensor technique field, in particular to a kind of dynamic surface pressure sensor.
Background technique
In Exploding test, blast pressure is the important indicator for measuring brisance, and nuclear blastization is quick-fried, bomb priming system, pacifies
Full protection engineering etc. can select the pressure sensor of different performance because of self performance or the difference of service condition, to explode
Energy is reflected with voltage value.Piezoelectric transducer it is anti-interference it is good, signal-to-noise ratio is high, good reliability, frequency response are wide, temperature characterisitic
It is good, it is suitble to do blast pressure sensor use, but mostly uses the sensor of the external pressure introduced, cost in domestic Exploding test
It is higher.
Utility model content
Pressure sensor to overcome domestic Exploding test existing in the prior art to use needs to introduce by external, at
This higher problem, the utility model provide a kind of dynamic surface pressure sensor.
Specific technical solution is as follows:
A kind of dynamic surface pressure sensor, including stainless steel casing, sensitive area diaphragm, piezoelectric crystal plate, conductive sheet and
Signal wire, the stainless steel casing are provided with opening, and the sensitive area diaphragm is fixed at opening, the piezoelectric crystal plate
It is provided with two layers, respectively upper piezoelectric crystal plate and lower piezoelectric crystal wafer, the lower piezoelectric crystal wafer are laid on stainless steel casing
Inner bottom surface, the upper piezoelectric crystal plate is laid on lower piezoelectric crystal wafer upper surface, and offsets with sensitive area diaphragm, the conduction
Piece is arranged between two layers of piezoelectric crystal plate, and insulated ring, the letter are provided between the piezoelectric crystal plate and stainless steel casing
Number line is connected with conductive sheet either end, and sequentially passes through insulated ring and stainless steel casing setting.
Preferably, the size of the stainless steel casing is 40 × 8mm of Φ.
Preferably, the stainless steel casing bottom surface is symmetrically arranged with multiple mounting grooves.
Preferably, the insulated ring is polytetrafluoroethylene (PTFE) circle.
Preferably, sealant is perfused between the signal wire and shell.
The utility model has the advantages that compared with prior art
Dynamic surface pressure sensor structure provided by the utility model is simple, and high sensitivity, test frequency are reachable
80KHz or more, the pressure test that can be used in Exploding test meet the needs of test site, such as: naval vessel surface water slug pressure
Power, air field surface superpressure, bullet train run wind pressure, the police military protection suit capability of antidetonance, military vehicle seat antiknock energy
Power and to driver and passenger's impairment value etc..
Detailed description of the invention
Fig. 1 is a kind of schematic diagram of internal structure of dynamic surface pressure sensor of the utility model.
In figure, 1- stainless steel casing, 2- sensitive area diaphragm, the upper piezoelectric crystal plate of 3-, 4- conductive sheet, 5- pushing transistor
Piece, 6- mounting groove, 7- signal wire, 8- insulated ring.
Specific embodiment
Specific embodiment of the present utility model is described further with reference to the accompanying drawing.It should be noted that
The explanation of these embodiments is used to help to understand the utility model, but does not constitute the restriction to the utility model.This
Outside, technical characteristic involved in the various embodiments of the present invention described below is as long as they do not conflict with each other
It can be combined with each other.
The utility model discloses a kind of dynamic surface pressure sensors, as shown in Figure 1, including stainless steel casing 1, sensitive
Facial mask piece 2, piezoelectric crystal plate, conductive sheet 4 and signal wire 7, the size of stainless steel casing 1 are 40 × 8mm of Φ, stainless steel casing 1
It is provided with opening, sensitive area diaphragm 2 is fixed at opening, and piezoelectric crystal plate is provided with two layers, respectively upper piezo-electric crystal
Piece 3 and lower piezoelectric crystal wafer 5, lower piezoelectric crystal wafer 5 are laid on 1 inner bottom surface of stainless steel casing, and upper piezoelectric crystal plate 3 is laid on
5 upper surface of lower piezoelectric crystal wafer, and offset with sensitive area diaphragm 2, conductive sheet 4 is arranged between two layers of piezoelectric crystal plate, piezoelectricity
Insulated ring 8 is provided between crystal wafer and stainless steel casing 1, it is preferred that insulated ring 8 is polytetrafluoroethylene (PTFE) circle.Signal wire 7 with lead
Electric 4 either end of piece is connected, and sequentially passes through insulated ring 8 and the setting of stainless steel casing 1.1 bottom surface of stainless steel casing is symmetrically arranged with
Multiple mounting grooves 6, can enable sensor be bonded well with measured structure.It is perfused between signal wire 7 and shell in the application
There is sealant.
Working principle: sensitive area diaphragm 2 is to receive pressure signal, and diaphragm has certain elasticity, is restored rapidly after compression.Pressure
The effect of transistor piece is when diaphragm is by blastic deformation, and diaphragm generates charge letter to compressing piezo-electric crystal, piezo-electric crystal deformation
Number, charge signal is drawn through conductive sheet, is exported by signal wire.
The embodiments of the present invention is explained in detail in conjunction with attached drawing above, but the utility model is not limited to be retouched
The embodiment stated.For a person skilled in the art, right in the case where not departing from the utility model principle and spirit
These embodiments carry out a variety of change, modification, replacement and modification, still fall in the protection scope of the utility model.
Claims (5)
1. a kind of dynamic surface pressure sensor, it is characterised in that: including stainless steel casing, sensitive area diaphragm, piezoelectric crystal plate,
Conductive sheet and signal wire, the stainless steel casing are provided with opening, and the sensitive area diaphragm is fixed at opening, the pressure
Transistor piece is provided with two layers, and respectively upper piezoelectric crystal plate and lower piezoelectric crystal wafer, the lower piezoelectric crystal wafer are laid on not
Rust outer steel shell inner bottom surface, the upper piezoelectric crystal plate is laid on lower piezoelectric crystal wafer upper surface, and offsets with sensitive area diaphragm,
The conductive sheet is arranged between two layers of piezoelectric crystal plate, and insulation is provided between the piezoelectric crystal plate and stainless steel casing
Circle, the signal wire are connected with conductive sheet either end, and sequentially pass through insulated ring and stainless steel casing setting.
2. a kind of dynamic surface pressure sensor according to claim 1, it is characterised in that: the ruler of the stainless steel casing
Very little is 40 × 8mm of Φ.
3. a kind of dynamic surface pressure sensor according to claim 1, it is characterised in that: the stainless steel casing bottom surface
It is symmetrically arranged with multiple mounting grooves.
4. a kind of dynamic surface pressure sensor according to claim 1, it is characterised in that: the insulated ring is polytetrafluoro
Ethylene circle.
5. a kind of dynamic surface pressure sensor according to claim 1, it is characterised in that: the signal wire and shell it
Between be perfused with sealant.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920376846.3U CN209485591U (en) | 2019-03-25 | 2019-03-25 | A kind of dynamic surface pressure sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920376846.3U CN209485591U (en) | 2019-03-25 | 2019-03-25 | A kind of dynamic surface pressure sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209485591U true CN209485591U (en) | 2019-10-11 |
Family
ID=68134713
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920376846.3U Active CN209485591U (en) | 2019-03-25 | 2019-03-25 | A kind of dynamic surface pressure sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209485591U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113405699A (en) * | 2021-06-09 | 2021-09-17 | 扬州科动电子有限责任公司 | Ultrahigh frequency dynamic pressure sensor |
| CN113513947A (en) * | 2021-06-21 | 2021-10-19 | 上海卫星工程研究所 | High-reliability initiating explosive device driving circuit |
-
2019
- 2019-03-25 CN CN201920376846.3U patent/CN209485591U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113405699A (en) * | 2021-06-09 | 2021-09-17 | 扬州科动电子有限责任公司 | Ultrahigh frequency dynamic pressure sensor |
| CN113513947A (en) * | 2021-06-21 | 2021-10-19 | 上海卫星工程研究所 | High-reliability initiating explosive device driving circuit |
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