CN218628751U - Target surface pressure load measuring sensor structure based on rectangular PVDF film - Google Patents
Target surface pressure load measuring sensor structure based on rectangular PVDF film Download PDFInfo
- Publication number
- CN218628751U CN218628751U CN202223173417.7U CN202223173417U CN218628751U CN 218628751 U CN218628751 U CN 218628751U CN 202223173417 U CN202223173417 U CN 202223173417U CN 218628751 U CN218628751 U CN 218628751U
- Authority
- CN
- China
- Prior art keywords
- pvdf
- film
- sensor structure
- pressure load
- shell
- 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.)
- Active
Links
Images
Landscapes
- Measuring Fluid Pressure (AREA)
Abstract
The utility model provides a target surface pressure load measurement sensor structure based on rectangle PVDF film, including base casing, PVDF piezoelectric film, apron, screw, thermal-insulated insulating cement. The PVDF piezoelectric thin film is composed of a PVDF thin film sensitive element, a signal output end shell and a signal line, the signal output end shell and the groove of the base shell are matched together through a gap, the PVDF piezoelectric thin film is positioned, the PVDF thin film sensitive element is placed in the piezoelectric thin film mounting groove of the base shell, and the signal output end shell of the PVDF piezoelectric thin film is bonded with the groove of the base shell through heat insulation glue. The utility model provides a target surface pressure load measurement sensor structure based on rectangle PVDF film, this sensor structure have sensitivity height, natural frequency height and the good advantage of uniformity.
Description
Technical Field
The utility model relates to a sensor technology field, concretely relates to target surface pressure load measurement sensor structure based on rectangle PVDF film.
Background
Missile and cloud blasting missile warhead explosion can generate strong shock waves, and in order to effectively evaluate the damage power of the warhead, the shock wave pressure sensed by the surface of a typical target needs to be accurately measured.
The traditional sensor structure for the target surface shock wave pressure test mainly comprises the following components: based on the cake structure of the piezoelectric crystal and the cylindrical structure of the PVDF film, the shells of the two sensor structures have no mounting threads or holes and can only be bonded together through the super glue and the target. This bonding can significantly reduce the natural frequency of the sensor structure, which exhibits poor dynamic response characteristics.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problem, the utility model provides a target surface pressure load measurement sensor structure based on rectangle PVDF film, this sensor structure has sensitivity height, natural frequency height and the good advantage of uniformity.
In order to realize the purpose, the utility model adopts the technical proposal that:
the utility model provides a target surface pressure load measuring transducer structure based on rectangle PVDF film, base casing, PVDF piezoelectric film, apron, screw and thermal-insulated insulating cement, the apron pass through the fix with screw on the base casing, the base casing have a piezoelectric film mounting groove and a recess, PVDF piezoelectric film constitute by PVDF film sensing element, signal output part shell and signal line triplex, the recess of signal output part shell and base casing pass through clearance fit together, realize PVDF piezoelectric film's location, PVDF film sensing element place in the piezoelectric film mounting groove of base casing, PVDF piezoelectric film's signal output part shell bond together through the recess of thermal-insulated insulating cement and base casing.
As the utility model discloses further improve, the apron on open and to have 5 circular through-holes, the base casing on open and to have 5 screw holes, 5 screw holes of base casing and 5 circular through-holes of apron, connect through the screw, apply the pretightning force for PVDF film sensing element.
As the utility model discloses further improve, the base casing on open and to have the circular through-hole of 4 steps, can be used to fix this pressure load measurement sensor structure on the target.
As the utility model discloses further improve, apron thickness direction and base casing complex position and screw and base casing between the gap, all scribble the thermal-insulated insulating glue of one deck for isolated explosion shock wave heat flow is to sensor structure output response's influence.
Compared with the prior art, the beneficial effects of the utility model are that:
(1) The bolts are adopted to apply pretightening force to the cover plate, and the pressure load measuring sensor structure integrally has the advantage of high natural frequency.
(2) The PVDF piezoelectric film has the advantages that the signal output end shell is in clearance fit with the base shell, so that the precise positioning of the PVDF piezoelectric film is realized, and the structure of the pressure load measuring sensor has good consistency.
(3) The PVDF piezoelectric film with high sensitivity is adopted as a sensitive element, so that the pressure load measurement sensor structure integrally has the characteristic of high sensitivity.
Drawings
FIG. 1 is a schematic structural section view of a rectangular PVDF film-based target surface pressure load measurement sensor of the present invention;
FIG. 2 is a cross-sectional view of the rectangular PVDF film based target surface pressure load measuring sensor structure of the present invention;
reference numerals: 1. the device comprises a base shell, 2, a PVDF piezoelectric film, 3, a cover plate, 4, screws and 5, and heat-insulating glue.
Detailed Description
The present invention will be described in further detail with reference to the following detailed description and accompanying drawings:
as shown in fig. 1 and fig. 2, according to the technical solution of the present invention, the present embodiment provides a sensor structure for measuring target surface pressure load based on rectangular PVDF film, which comprises a base housing 1, a PVDF piezoelectric film 2, a cover plate 3, screws 4, and a heat insulating glue 5. Base casing 1 have a piezoelectric film mounting groove and a recess, PVDF piezoelectric film 2 constitute by PVDF film sensing element, signal output part shell and signal line triplex, the recess of signal output part shell and base casing 1 pass through clearance fit together, realize PVDF piezoelectric film 2's location, PVDF film sensing element place in base casing 1's piezoelectric film mounting groove, PVDF piezoelectric film 2's signal output part shell bond together through thermal-insulated insulating cement 5 and base casing 1's recess.
The cover plate 3 is provided with 5 circular through holes, and the base shell 1 is provided with 5 threaded holes and 4 step circular through holes.
The 5 threaded holes of the base shell 1 and the 5 circular through holes of the cover plate 3 are connected through screws 4 to apply pretightening force to the PVDF film sensitive element.
The 4 step circular through holes on the base shell 1 can be used for fixing the pressure load measuring sensor structure on a target.
The position of the cover plate 3, which is matched with the base shell 1 in the thickness direction, and the gap between the screw 4 and the base shell 1 are coated with a thin layer of heat-insulating glue 5 for isolating the influence of the heat flow of the explosion shock wave on the output response of the sensor structure.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way, but also to cover any modifications or equivalent changes made in the technical spirit of the present invention, which fall within the scope of the present invention.
Claims (4)
1. The utility model provides a target surface pressure load measurement sensor structure based on rectangle PVDF film, includes base casing (1), PVDF piezoelectric film (2), apron (3), screw (4) and thermal-insulated insulating cement (5), its characterized in that, apron (3) fix on base casing (1) through screw (4), base casing (1) have a piezoelectric film mounting groove and a recess, PVDF piezoelectric film (2) constitute by PVDF film sensing element, signal output part shell and signal line triplex, the recess of signal output part shell and base casing (1) cooperate together through the clearance, realize the location of PVDF piezoelectric film (2), PVDF film sensing element place in the piezoelectric film mounting groove of base casing (1), the signal output part shell of PVDF piezoelectric film (2) bond together through the recess of thermal-insulated insulating cement (5) and base casing (1).
2. The rectangular PVDF film based target surface pressure load measurement sensor structure of claim 1, wherein: the novel LED lamp is characterized in that 5 circular through holes are formed in the cover plate (3), 5 threaded holes are formed in the base shell (1), and the 5 threaded holes of the base shell (1) are connected with the 5 circular through holes of the cover plate (3) through screws (4).
3. The rectangular PVDF film-based target surface pressure load measurement sensor structure as claimed in claim 1, wherein: the base shell (1) is provided with 4 step round through holes.
4. The rectangular PVDF film based target surface pressure load measurement sensor structure of claim 1, wherein: and a layer of heat-insulating glue (5) is coated on the position where the cover plate (3) is matched with the base shell (1) in the thickness direction and the gap between the screw (4) and the base shell (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223173417.7U CN218628751U (en) | 2022-11-29 | 2022-11-29 | Target surface pressure load measuring sensor structure based on rectangular PVDF film |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223173417.7U CN218628751U (en) | 2022-11-29 | 2022-11-29 | Target surface pressure load measuring sensor structure based on rectangular PVDF film |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218628751U true CN218628751U (en) | 2023-03-14 |
Family
ID=85453198
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223173417.7U Active CN218628751U (en) | 2022-11-29 | 2022-11-29 | Target surface pressure load measuring sensor structure based on rectangular PVDF film |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218628751U (en) |
-
2022
- 2022-11-29 CN CN202223173417.7U patent/CN218628751U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US6617764B2 (en) | High temperature piezoelectric sensor | |
| WO2022000793A1 (en) | Vibration sensor | |
| CN103674353A (en) | Concrete stress sensor by piezoelectric properties of PVDF (polyvinylidene fluoride) film | |
| CN113432772B (en) | High-sensitivity film sensor for measuring object surface shock wave and manufacturing method thereof | |
| CN109212262B (en) | High-temperature piezoelectric acceleration sensor based on transverse vibration mode | |
| CN206790708U (en) | A kind of measuring microphone using titanium or titanium alloy as diaphragm | |
| CN107219027A (en) | A kind of encapsulating structure of ceramic capacitive pressure sensors | |
| CN103217210A (en) | Piezoelectric type noise sensor | |
| CN218628751U (en) | Target surface pressure load measuring sensor structure based on rectangular PVDF film | |
| RU169297U1 (en) | ELECTRO-ACOUSTIC OPTICAL TRANSMITTER TO ULTRASONIC FLOW METERS | |
| CN209485591U (en) | A kind of dynamic surface pressure sensor | |
| CN112197854A (en) | High-performance piezoelectric vibration sensor | |
| CN112378509A (en) | High-sensitivity intermediate-frequency vector hydrophone | |
| RU2589494C1 (en) | Capacitive inertial pressure sensor, method of its assembly and method of pressure measuring | |
| CN201075018Y (en) | Sound wave receiving sensor | |
| CN218628760U (en) | Piezoelectric pressure sensor structure for measuring pressure load on surface of target | |
| CN111060236A (en) | Silicon piezoresistive pressure sensor packaging assembly structure | |
| CN209961346U (en) | Pipe wall type temperature transmitter | |
| CN214416909U (en) | Energy converter | |
| CN212904972U (en) | Two-channel acoustic Doppler current profiler transducer sealing structure | |
| CN113483828A (en) | Double-piece ceramic warm-pressing core body and preparation method thereof | |
| CN210136010U (en) | Sensing device of underwater shock wave sensor | |
| CN2515682Y (en) | Shearing insulating piezoelectric accelerometer | |
| JPS60157032A (en) | Transmission device for cylinder pressure of internal combustion engine | |
| CN112153528B (en) | Vector hydrophone of composite cymbal type piezoelectric ceramic transducer |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |