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加速度传感器原理

发布时间:2017-06-07 10:10:22 分类:新闻动态 来源: 点击:次

加速度传感器原理 加速度传感器原理   加速度传感器'>传感器是用来将加速度这1物理信号转变成便于丈量的电信号的测试仪器。它是工业、国防等许多领域中进行冲击、振动丈量经常使用的测试仪器。  1、加速度传感器原理概述  加速度传感器是用来将加速度这1物理信号转变成便于丈量的电信号的测试仪器。差容式力平衡加速度传感器则把被测的加速度转换为电容器的电容量变化。实现这类功能的方法有变间隙,变面积,变介电常量3种,差容式力平衡加速度传感器利用变间隙,且用差动式的结构,它优点是结构简单,动态响应好,能实现无接触式丈量,灵敏度好,分辨率强,能丈量0.01um乃至更微小的位移,但是由于本身的电容量1般很小,仅几pF至几百pF,其容抗可高达几MΩ至几百MΩ,所以对绝缘电阻的要求较高,并且寄生电容(引线电容及仪器中各元器件与极板间电容等)不可

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加速度传感器原理