Strain type three-dimensional acceleration sensor

A three-dimensional acceleration and sensor technology, which is applied in the direction of multi-dimensional acceleration measurement and acceleration measurement using inertial force, etc., can solve the problems of relatively high machining accuracy, high manufacturing process cost, and large sensor volume, so as to reduce manufacturing process cost and cost Low, the effect of increasing the sensitivity

Active Publication Date: 2012-05-02
CHONGQING UNIV
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Problems solved by technology

In the beginning, the three-dimensional acceleration sensor mainly integrated multiple single-dimensional acceleration sensors to obtain three-dimensional information. Due to the existence of three mass blocks, the inconsistency of the center of mass brought measurement errors, and due to the existence of multiple single-dimensional accele

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  • Strain type three-dimensional acceleration sensor

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Embodiment Construction

[0024] All features disclosed in this specification, or steps in all methods or processes disclosed, may be combined in any manner, except for mutually exclusive features and / or steps.

[0025] Any feature disclosed in this specification (including any appended claims, abstract and drawings), unless expressly stated otherwise, may be replaced by alternative features which are equivalent or serve a similar purpose. That is, unless expressly stated otherwise, each feature is one example only of a series of equivalent or similar features.

[0026] The strain type three-dimensional acceleration sensor includes an elastic body 1, a fixing glue 3, a quality block 4 and 8 strain gauges. Such as figure 1 As shown, the axial section of the elastic body 1 is in the shape of "┻", the lower end of the elastic body 1 is the structure of the spoke 5, the upper end is the structure of the cylinder 6, and the upper end surface is fixed and connected to the mass block 4 by the fixing glue 3; ...

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Abstract

The invention discloses a strain type three-dimensional acceleration sensor and belongs to the field of a three-dimensional sensor. The sensor comprises an elastic body, fixing glue, a mass block and eight strain foils, wherein an axial cross section of the elastic body is inverted T-shaped; the lower end of the elastic body is of a spoke structure; the lower end is of a cylinder structure and anupper end face of the elastic body is fixedly connected to the mass block through the fixing glue; four strain foils are symmetrically arranged on a same spoke bar of a spoke, particularly, a first strain foil and a third strain foil are arranged on the upper surface of the spoke bar and a second strain foil and a fourth strain foil are arranged on the lower surface of the spoke bar; and four strain foils, namely, a fifth strain foil, a sixth strain foil, a seventh strain foil and an eighth strain foil, are uniformly arranged on a cylinder of the elastic body along a circumferential direction. The strain type three-dimensional acceleration sensor can be used for simultaneously detecting the three-dimensional vibration states of an object.

Description

technical field [0001] The invention relates to a strain sensor, in particular to a strain three-dimensional acceleration sensor. Background technique [0002] The current three-dimensional acceleration sensors are divided into two structural forms according to whether the three-dimensional information is acquired through a single inertial mass block or multiple inertial mass blocks: composite type and integrated type. The former is to synthesize multiple unidirectional acceleration sensors in an orthogonal manner, and generally each direction of acceleration information corresponds to a mass block; the latter is to complete the measurement of acceleration in three directions through a single inertial mass block. In the beginning, the three-dimensional acceleration sensor mainly integrated multiple single-dimensional acceleration sensors to obtain three-dimensional information. Due to the existence of three mass blocks, the inconsistency of the center of mass brought measure...

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Application Information

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IPC IPC(8): G01P15/18G01P15/12
Inventor 邵毅敏王辉鲜敏王培周俭基陈林
Owner CHONGQING UNIV
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