Embedded dynamic pressure tester

A dynamic pressure and tester technology, applied in the direction of measuring blasting force, etc., can solve the problems that the dynamic pressure test system cannot be embedded, the dynamic response frequency range is narrow, the cable connection and layout are cumbersome, etc., and the structure is simple and reliable, and the dynamic response frequency is wide. , the effect of high signal-to-noise ratio

Inactive Publication Date: 2017-11-24
NANJING UNIV OF SCI & TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem solved by the present invention is to provide an embedded dynamic pressure tester, which solves the problem that the existing dynamic pressure test system cannot be embedded in the test field, the cable connection and layout are cumbersome, the equipment is bulky, the signal-to-noise ratio is low, and the dynamic response frequency narrow problem

Method used

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  • Embedded dynamic pressure tester

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Embodiment Construction

[0013] In order to illustrate the technical scheme and technical purpose of the present invention, the present invention will be further introduced below in conjunction with the accompanying drawings and specific embodiments.

[0014] An embedded dynamic pressure tester, comprising a front cover 1, a casing 2, a rear cover 4, a battery 7, a main circuit board 8, a PVDF film 10, and a gland 11;

[0015] The front end cover 1 and the rear end cover 4 are fixedly connected to the front and rear ends of the casing 2 respectively; the casing is a cavity structure with an open rear end; the gland 11 is located between the front end cover 1 and the casing 2, and The PVDF film 10 is located between the rear end surface of the gland 11 and the front surface of the housing 2, and the gland 11 and the housing 2 are bonded to the PVDF film 10; the PVDF film 10 is used to test the shock wave transmitted from the gland 11 and reflected back from the front surface of the housing 2 of reflect...

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Abstract

The invention discloses an embedded dynamic pressure tester comprising a front end cover, a housing, a rear end cover, a battery, a main circuit board, a PVDF film, and a gland. The front end cover and the rear end cover are fixedly connected to the front and rear ends of the housing respectively; and the housing has a cavity structure with a rear end opened. The gland is arranged between the front end cover and the housing. The PVDF film is arranged between the rear end surface of the gland and the front end surface of the housing; and the gland and the housing are in contact with the PVDF film. A transmission hole is formed in the middle of the front end cover. The main circuit board and the battery are arranged inside the housing. The battery provides power for the main circuit board; and the main circuit board and the PVDF film are connected by a wire. According to the embedded dynamic pressure tester, the pressure response is fast; and the anti-interference capability is high. The tester having a simple and reliable structure can be embedded into a test field; defects of tedious operations, complicated wiring, and heavy equipment of the traditional testing method are overcome; and thus dynamic pressure measurement becomes accurate and intelligent.

Description

technical field [0001] The invention belongs to the field of test and measurement, in particular to an embedded dynamic pressure tester. Background technique [0002] As a new pressure dynamic effect testing technology, the embedded dynamic pressure tester uses polyvinylidene fluoride (PVDF) as the piezoelectric sensitive material, which is light and soft, has little effect on the mechanical properties of the structure, and has a good relationship with the structure. It can be made into large-area sensing elements of various shapes and laid on the surface of the structure for surface monitoring; it has good mechanical strength and toughness, and exhibits high piezoelectric stability to humidity, temperature and chemical substances; PVDF It is a dynamic sensitive material, which responds quickly to changes in mechanical stress or strain, and is convenient for measuring deformation caused by impact loads; it has a fairly wide frequency range, which can reach 0.1Hz to tens of G...

Claims

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Application Information

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IPC IPC(8): G01L5/14
CPCG01L5/14
Inventor 曾明超郭锐
Owner NANJING UNIV OF SCI & TECH
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