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Device for measuring quasi-static force via piezoelectric sensing element

A sensor element, using piezoelectric technology, applied in the field of mechanical measurement, can solve the problem of inability to measure quasi-static force, etc., and achieve the effect of convenient design of subsequent processing devices and high accuracy

Inactive Publication Date: 2014-03-12
贝辛电子科技(上海)有限公司
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Problems solved by technology

[0006] In view of the problems existing in the above-mentioned prior art, the purpose of the present invention is to provide a device for measuring quasi-static force using piezoelectric sensing elements, so as to solve the problem that the existing piezoelectric sensing element force measuring device cannot measure quasi-static force. problem, and also has the function of measuring dynamic force

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  • Device for measuring quasi-static force via piezoelectric sensing element
  • Device for measuring quasi-static force via piezoelectric sensing element
  • Device for measuring quasi-static force via piezoelectric sensing element

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Embodiment Construction

[0030] The present invention is described in further detail now in conjunction with accompanying drawing.

[0031] like figure 1 As shown, a device for measuring quasi-static force using a piezoelectric sensor element, said device includes: a piezoelectric sensor element 01, a packaging component 02, a shielded wire 03, a preamplifier circuit 04 and a signal analysis circuit 05; The piezoelectric sensing element 01 is packaged inside the packaging component 02 by thermoplastic or cold mounting or coating or coating or vapor deposition or pouring process; the shielding wire 03 connects the two poles of the piezoelectric sensing element 01 drawn out, and connected to the input of the preamplifier circuit 04, the preamplifier circuit 04 (combined with the attached figure 2 ) The output terminal is connected to the signal analysis circuit 05 (combined with the attached image 3 ), the output of the signal analysis circuit 05 can be connected to external electronic equipment.

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Abstract

The invention discloses a device for measuring the quasi-static force via a piezoelectric sensing element. The device comprises the piezoelectric sensing element, a packaging part and a processing circuit, wherein the piezoelectric sensing element is used for sampling stress change signals, and is packaged in the packaging part, the processing circuit is used for amplifying and processing the stress change signals, the input end of the processing circuit is connected with two poles of the piezoelectric sensing element via shielding wires, and the output end of the processing circuit is connected with external electronic equipment. The device of the invention can be used to accurately reflect stress change states under the quasi-static force without distortion.

Description

technical field [0001] The invention relates to the field of mechanical measurement, in particular to a device for measuring quasi-static force using piezoelectric sensing elements. Background technique [0002] Piezoelectric sensing element is a sensor made by using the piezoelectric effect produced by certain dielectric materials. The so-called piezoelectric effect refers to the phenomenon that when certain dielectrics are deformed (including bending and stretching deformation) by an external force in a certain direction, charges will be generated on the surface due to the polarization of internal charges. [0003] Piezoelectric sensing elements have simple structure, small size, light weight, low power consumption, and long life. In particular, they have good dynamic characteristics, so they are suitable for periodic forces with a wide frequency band and high-speed changing impact forces. [0004] Since the charge generated by the external force acting on the piezoelectr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01L1/16G01L9/08
Inventor 孟召龙李彦坤张欣梧娄可行张晓青刘玲
Owner 贝辛电子科技(上海)有限公司
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