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Piezoelectric passive acceleration sensor

An acceleration sensor, piezoelectric technology, applied in the direction of using inertial force for acceleration measurement, etc., can solve the problems of high requirements for subsequent demodulation circuits, poor linearity of sensors, and difficult processes, etc., to improve the working temperature range and frequency range Wide, dynamic range effects

Inactive Publication Date: 2018-05-08
JINCHENG NANJING ELECTROMECHANICAL HYDRAULIC PRESSURE ENG RES CENT AVIATION IND OF CHINA
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AI Technical Summary

Problems solved by technology

[0002] Traditional acceleration sensors are generally capacitive or resistive designs. These types of sensors have problems such as poor linearity, severe temperature influence, high output impedance, and small measurement range.
Therefore, the traditional acceleration sensor has very high requirements on the subsequent demodulation circuit, and the process is difficult

Method used

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Embodiment Construction

[0013] In order to better illustrate the present invention, it will be described in detail below in conjunction with the accompanying drawings.

[0014] Please also see figure 1 and figure 2 The piezoelectric passive acceleration sensor of the present invention includes an end cover 1, two mass blocks 2 with the same mass, two piezoelectric sheets 3 with the same performance, four identical insulating sheets 4, a base 5, a housing 6, Wire 7, circuit board 8, aviation plug 9. Wherein, the piezoelectric sheet 3 is a sensitive piezoelectric material, the insulating sheet 4 is bonded at both ends, and then symmetrically bonded to both sides of the base 5, and the quality block 2 is symmetrically bonded outside the insulating sheet 4, and the piezoelectric sheet 3 The electrodes are connected with the wire 7 between the circuit board 8 , and the circuit board 8 is connected with the aviation plug 9 (aviation plug and socket) through the wire 7 . The end cover 1 and the housing ...

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Abstract

The invention belongs to the technical field of sensor design, and relates to a novel piezoelectric passive acceleration sensor. The piezoelectric passive acceleration sensor comprises an end cover (1), mass blocks (2), piezoelectric plates (3), insulating sheets (4), a base (5), a shell (6), wires (7), a circuit board (8) and an aviation plug (9). When a sensor feels vibration, the mass blocks (2) can move relative to the base (5), the piezoelectric plates (3) are sheared to generate charges, the charge quantity is proportional to the vibration acceleration, the charge quantity is processed through the circuit board (8) and acceleration signals are outputted through the aviation plug (9). The acceleration sensor adopts a piezoelectric material as a conversion element, the dynamic range islarge, the frequency range is wide, the sensitivity error is small, the external disturbance is small, and no external power supply is needed. By adopting a shearing-type sensor structure, force measurement errors generated by deformation under sensor shell temperature or stress can be reduced.

Description

technical field [0001] The invention belongs to the technical field of sensor design and relates to a novel piezoelectric passive acceleration sensor. Background technique [0002] Traditional acceleration sensors are generally capacitive or resistive designs. These types of sensors have problems such as poor linearity, severe temperature influence, high output impedance, and small measurement range. Therefore, the traditional acceleration sensor has very high requirements on the subsequent demodulation circuit, and the process is relatively difficult. Contents of the invention [0003] The purpose of the present invention is to provide a piezoelectric passive acceleration sensor with a large range and high precision. [0004] The technical solution of the present invention is: a large-scale high-precision piezoelectric acceleration sensor, including an end cover 1, two mass blocks 2 with the same mass, two piezoelectric sheets 3 with the same performance, and four identi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01P15/09
Inventor 毛世杰雷体高王燕山刘德峰黄漫国
Owner JINCHENG NANJING ELECTROMECHANICAL HYDRAULIC PRESSURE ENG RES CENT AVIATION IND OF CHINA
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