CN107389253A - Embedded dynamically pressure testing instrument - Google Patents
Embedded dynamically pressure testing instrument Download PDFInfo
- Publication number
- CN107389253A CN107389253A CN201710519918.0A CN201710519918A CN107389253A CN 107389253 A CN107389253 A CN 107389253A CN 201710519918 A CN201710519918 A CN 201710519918A CN 107389253 A CN107389253 A CN 107389253A
- Authority
- CN
- China
- Prior art keywords
- shell
- circuit board
- main circuit
- pressure testing
- testing instrument
- 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.)
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Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L5/00—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
- G01L5/14—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes for measuring the force of explosions; for measuring the energy of projectiles
Abstract
The invention discloses a kind of embedded dynamically pressure testing instrument, including drive end bearing bracket, shell, rear end cap, battery, main circuit board, PVDF thin film, gland；The drive end bearing bracket and rear end cap are respectively fixedly connected in the rear and front end of shell；The shell is the cavity body structure of open rearward end；The gland is between drive end bearing bracket and shell, and between gland rear end face and case nose face, gland and shell are bonded the PVDF thin film with PVDF thin film；The centre of the drive end bearing bracket is provided with transmission hole；The main circuit board, battery are set inside the housing；Battery is powered for main circuit board；Main circuit board is connected with PVDF thin film by wire.The embedded dynamically pressure testing instrument of invention, realizes that pressure-responsive is fast, strong antijamming capability, and tester is simple and reliable for structure, it can be embedded into checkout area, avoid conventional test methodologies cumbersome, wiring is complicated, equipment is heavy so that dynamic pressure measurement is more accurate, more intelligent.
Description
Technical field
The invention belongs to test fields of measurement, particularly a kind of embedded dynamically pressure testing instrument.
Background technology
Embedded dynamically pressure testing instrument is as a kind of new Pressure behaviour effect measuring technology, using polyvinylidene fluoride
(PVDF) piezoelectric sensitivity material is used as, there is light softness, to the Effect on Mechanical Properties very little of structure, have with structure good
Compatibility, variously-shaped large area sensing element can be fabricated to and be laid on body structure surface progress face monitoring；With good machine
Tool intensity and toughness, very high piezoelectricity stability is shown to humidity, temperature and chemical substance；PVDF belongs to the sensitive material of dynamic
Material, for mechanical stress or the change response quickly of strain, it is easy to measure deformation caused by shock loading；With comparatively wide frequency
Rate scope, 0.1Hz can be reached to tens GHz；PVDF thin film lays simplicity, less to extraneous equipment requirement；Voltage sensibility is high,
It is easy to Signal acquiring and processing, explosion dynamic effect and bubble fluctuation measurement can be met to frequency response and the requirement of sensitivity；Together
Shi Caiyong measuring circuits are built-in, and system can be made to have very high signal to noise ratio and high frequency response performance, have that cost is low, volume
It is small, the parameters such as acquisition explosion transmission energy of intelligence can be facilitated, on-the-spot test and theory analysis to explosion dynamic effect are all
Important in inhibiting.
The measuring system that existing Dynamic Pressure Measurement System is divided into wire transmission and is wirelessly transferred.Line transmission system cloth
If difficulty is big, longer transmission line make it that system signal noise ratio is relatively low.Wireless transmitting system is due to caused water column in explosion or strong
Interference causes wireless signal to lose data, while can also reduce the signal to noise ratio of system, and wireless transmission method limits system
Sample rate and resolution ratio.And both measuring systems are sufficiently bulky, and connection cables are more between equipment, come to calibration tape very big
Inconvenience.
The content of the invention
Technical problem solved by the invention is to provide a kind of embedded dynamically pressure testing instrument solve existing dynamic
Pressure testing system can not be embedded into checkout area, and cable connection laying is cumbersome, and equipment is heavy, and signal to noise ratio is low, dynamic response frequency
The problem of rate narrow range.
The technical solution for realizing the object of the invention is：
A kind of embedded dynamically pressure testing instrument, including drive end bearing bracket, shell, rear end cap, battery, main circuit board, PVDF are thin
Film, gland；
The drive end bearing bracket and rear end cap are respectively fixedly connected in the rear and front end of shell；The shell is the cavity knot of open rearward end
Structure；The gland is between drive end bearing bracket and shell, and the PVDF thin film is between gland rear end face and case nose face, pressure
Lid and shell are bonded with PVDF thin film；The centre of the drive end bearing bracket is provided with transmission hole；The main circuit board, battery are arranged on shell
It is internal；Battery is powered for main circuit board；Main circuit board is connected with PVDF thin film by wire.
The present invention compared with prior art, its remarkable advantage：
(1) PVDF thin film is tightly fitted on shell by the present invention by gland so that dynamically pressure testing instrument is to pressure
Response quickly, dynamic response frequency are wide；
(2) present invention by main circuit board, battery is compact is placed in enclosure so that dynamically pressure testing instrument is very compact
Intelligence, simple and reliable for structure, be affected by the external environment very little, has very high antijamming capability, signal to noise ratio height.
The present invention is described in further detail below in conjunction with the accompanying drawings.
Brief description of the drawings
Fig. 1 is the embedded dynamically pressure testing instrument section overall construction drawing of the present invention.
Embodiment
In order to illustrate technical scheme and technical purpose, below in conjunction with the accompanying drawings and specific embodiment is done to the present invention
It is further to introduce.
A kind of embedded dynamically pressure testing instrument, including drive end bearing bracket 1, shell 2, rear end cap 4, battery 7, main circuit board 8,
PVDF thin film 10, gland 11；
The drive end bearing bracket 1 and rear end cap 4 are respectively fixedly connected in the rear and front end of shell 2；The shell is the chamber of open rearward end
Body structure；For the gland 11 between drive end bearing bracket 1 and shell 2, the PVDF thin film 10 is located at the rear end face of gland 11 and shell 2
Between front end face, gland 11 and shell 2 are bonded with PVDF thin film 10；PVDF thin film 10 is used to testing that gland 11 to transmit rushes
Hit the back wave that ripple and the front end face of shell 2 reflect.The centre of the drive end bearing bracket 1 is provided with transmission hole, when whole pressure is surveyed
When examination instrument is located in shock environment, the superpressure signal of shock wave is acted directly on the front end face of gland 11 by transmission hole.It is described
Main circuit board 8, battery 7 are arranged on inside shell 2；Battery is that main circuit board 8 is powered；Main circuit board 8 passes through with PVDF thin film 10
Wire connects, and main circuit board 8 is amplified to charge signal caused by PVDF thin film 10, nursed one's health, quantifying to gather and store.
As the further optimization to above-mentioned embodiment, the inwall of shell 2 is additionally provided with liner 3, the main circuit board
8th, buffer substrate tablet 9 is additionally provided between battery 7, shell 2；Liner 3, buffer substrate tablet 9 play buffering, electrical isolation to circuit board 8, battery 7
Protective effect.
In some embodiments, external read device directly reads data by the interface on main circuit board 8, sets master
The parameter of circuit board 8；
In other embodiment, the main circuit board 8 is connected with interface card 6, and interface card 6 is arranged on
Inside housing 2；External read device directly reads data by the interface on interface card 6, sets the parameter of main circuit board 8；
Preferably, the liner 3, the material of buffer substrate tablet 9 are silica gel, have buffering and buffer action well.
Preferably, the main circuit 8 is arranged on the front end in shell 2, close to PVDF thin film 10 so that the two line compared with
Short, whole tester size is smaller, strong antijamming capability.
Preferably, through hole is equipped with the buffer substrate tablet 9 between the front end face of the shell 2, shell 2 and main circuit 8, be easy to
Main circuit 8 is connected with PVDF thin film 10 so that the line of the two is shorter.
Further, the gland 11 is identical with the thickness of the front end of shell 2 so that the incidence wave of the both sides of PVDF thin film 10 with
Distance that back wave is propagated in gland 11 with shell 2 front end respectively and time into integer multiple relation, are easy to the signal in later stage
Analysis and processing.
Rear end cap 4 is backed out during use, turned on the power by interface circuit 6, sets the embedded dynamically pressure testing instrument to be
Required test parameter and mode of operation, rear end cap 4 is tightened afterwards, it is simple and convenient, avoid cumbersome connection from laying dress
Put；
According to test request, embedded dynamically pressure testing instrument is placed in demolition site test point, it is axially against blast
Source center, dynamic pressure is allowed all to act on the polarised direction of PVDF thin film 10, after being triggered by dynamic pressure, embedded dynamic
Pressure tester will gather storage pressure data in real time automatically.Whole test system is all embedded into test environment, it is not necessary to multiple
Miscellaneous installation and wiring, simple and reliable for structure, strong antijamming capability, signal to noise ratio are high；
Embedded dynamically pressure testing instrument is fetched, backs out rear end cap 4, data are read by interface circuit 6, powered off
Afterwards, dynamically pressure testing instrument can store without arranging.Whole process is simple to operate, dramatically reduces tester's
Labor intensity, avoid unnecessary repetitive operation.
Claims (8)
- A kind of 1. embedded dynamically pressure testing instrument, it is characterised in that, including drive end bearing bracket (1), shell (2), rear end cap (4), electricity Pond (7), main circuit board (8), PVDF thin film (10), gland (11)；The drive end bearing bracket (1) and rear end cap (4) are respectively fixedly connected in the rear and front end of shell (2)；The shell is open rearward end Cavity body structure；The gland (11) is located between drive end bearing bracket (1) and shell (2), and the PVDF thin film (10) is located at gland (11) Between rear end face and shell (2) front end face, gland (11) and shell (2) are bonded with PVDF thin film (10)；The drive end bearing bracket (1) Centre is provided with transmission hole；It is internal that the main circuit board (8), battery (7) are arranged on shell (2)；Battery supplies for main circuit board (8) Electricity；Main circuit board (8) is connected with PVDF thin film (10) by wire.
- 2. embedded dynamically pressure testing instrument as claimed in claim 1, it is characterised in that, shell (2) inwall is additionally provided with Liner (3), buffer substrate tablet (9) is additionally provided between the main circuit board (8), battery (7), shell (2).
- 3. embedded dynamically pressure testing instrument as claimed in claim 2, it is characterised in that, the liner (3), buffer substrate tablet (9) Material be silica gel.
- 4. embedded dynamically pressure testing instrument as claimed in claim 1, it is characterised in that, the main circuit board (8) and interface Circuit board (6) is connected, and it is internal that interface card (6) is arranged on shell (2).
- 5. embedded dynamically pressure testing instrument as claimed in claim 1, it is characterised in that, external read device passes through interface electricity Road plate (8) directly reads data.
- 6. embedded dynamically pressure testing instrument as claimed in claim 1, it is characterised in that, the main circuit board (8) is arranged on Front end in shell (2), close to PVDF thin film (10).
- 7. embedded dynamically pressure testing instrument as claimed in claim 1, it is characterised in that, it is the front end face of the shell (2), outer Through hole is equipped with buffer substrate tablet (9) between shell (2) and main circuit (8).
- 8. embedded dynamically pressure testing instrument as claimed in claim 1, it is characterised in that, the gland (11) and shell (2) thickness of front end is identical.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710519918.0A CN107389253A (en) | 2017-06-30 | 2017-06-30 | Embedded dynamically pressure testing instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710519918.0A CN107389253A (en) | 2017-06-30 | 2017-06-30 | Embedded dynamically pressure testing instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107389253A true CN107389253A (en) | 2017-11-24 |
Family
ID=60334760
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710519918.0A Pending CN107389253A (en) | 2017-06-30 | 2017-06-30 | Embedded dynamically pressure testing instrument |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107389253A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110186337A (en) * | 2019-06-06 | 2019-08-30 | 南京理工大学 | A kind of survey pressure imitating shell |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4756192A (en) * | 1984-10-17 | 1988-07-12 | Dornier System Gmbh | Shock wave sensor |
| CN2411473Y (en) * | 1998-12-14 | 2000-12-20 | 中国工程物理研究院应用电子学研究所 | Impact wave pressure testing device |
| US6877382B1 (en) * | 2003-10-20 | 2005-04-12 | Robert D Gourlay | Inhalation detector |
| CN1945248A (en) * | 2006-10-31 | 2007-04-11 | 北京信息工程学院 | Pulsating pressure sensor |
| CN201575885U (en) * | 2009-12-25 | 2010-09-08 | 中国兵器工业第二一三研究所 | Dynamic test system for detonation pressure of microminiature explosive device |
| CN203163919U (en) * | 2013-03-29 | 2013-08-28 | 济南大学 | PVDF piezoelectric film force sensor for impact force dynamic measurement |
| CN103674353A (en) * | 2013-12-20 | 2014-03-26 | 中南大学 | Concrete stress sensor by piezoelectric properties of PVDF (polyvinylidene fluoride) film |
| CN103674383A (en) * | 2013-12-05 | 2014-03-26 | 中国科学技术大学 | Piezoelectric film type underwater explosion pressure sensor and measuring method thereof |
| CN205785605U (en) * | 2016-05-30 | 2016-12-07 | 沈阳建筑大学 | The drop impact pressure transducer of embedded type PVDF piezoelectric membrane |
| CN106768569A (en) * | 2017-03-24 | 2017-05-31 | 沈阳建筑大学 | A kind of shock measuring system of array PVDF piezoelectric membranes |
-
2017
- 2017-06-30 CN CN201710519918.0A patent/CN107389253A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4756192A (en) * | 1984-10-17 | 1988-07-12 | Dornier System Gmbh | Shock wave sensor |
| CN2411473Y (en) * | 1998-12-14 | 2000-12-20 | 中国工程物理研究院应用电子学研究所 | Impact wave pressure testing device |
| US6877382B1 (en) * | 2003-10-20 | 2005-04-12 | Robert D Gourlay | Inhalation detector |
| CN1945248A (en) * | 2006-10-31 | 2007-04-11 | 北京信息工程学院 | Pulsating pressure sensor |
| CN201575885U (en) * | 2009-12-25 | 2010-09-08 | 中国兵器工业第二一三研究所 | Dynamic test system for detonation pressure of microminiature explosive device |
| CN203163919U (en) * | 2013-03-29 | 2013-08-28 | 济南大学 | PVDF piezoelectric film force sensor for impact force dynamic measurement |
| CN103674383A (en) * | 2013-12-05 | 2014-03-26 | 中国科学技术大学 | Piezoelectric film type underwater explosion pressure sensor and measuring method thereof |
| CN103674353A (en) * | 2013-12-20 | 2014-03-26 | 中南大学 | Concrete stress sensor by piezoelectric properties of PVDF (polyvinylidene fluoride) film |
| CN205785605U (en) * | 2016-05-30 | 2016-12-07 | 沈阳建筑大学 | The drop impact pressure transducer of embedded type PVDF piezoelectric membrane |
| CN106768569A (en) * | 2017-03-24 | 2017-05-31 | 沈阳建筑大学 | A kind of shock measuring system of array PVDF piezoelectric membranes |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110186337A (en) * | 2019-06-06 | 2019-08-30 | 南京理工大学 | A kind of survey pressure imitating shell |
| CN110186337B (en) * | 2019-06-06 | 2021-09-10 | 南京理工大学 | Pressure measuring simulation bomb |
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20171124 |
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| RJ01 | Rejection of invention patent application after publication |