基于单片机的发动机振动速度、位移和加速度测量方法

本文介绍了一种基于单片机的发动机振动速度、位移和加速度测量方法。该方法首先
对发动机的振动传感器信号进行高、低通滤波，然后通过模拟开关将其转化为电压信
号，再经过RMS 幅值测量元件和压频转换器转变成频率信号，由单片机对频率信号进
行计数、计算和显示测量结果。对振动速度进行积分和微分，可得到振动位移和加速
度，实测结果表明，该方法可以有效地减少环境因素对电子元件的影响，提高测量精
度。
关键词：单片机 振动速度 振动位移 振动加速度
Abstract: This paper presents a measuring method of engine vibration speed 、
displacement and acceleration。At first the signal from vibration senor of engine
was filtered by low-pass and high-pass filters, then changed into voltage signal
through a analog switch , measured by RMS and changed into frequency signal again
through VFC。 The frequency signal was counted and displayed by the single-chip
microcomputer. Integrating the vibration speed, we can get vibration displacement
and differentiating it we can get vibration acceleration. The result indicates that
this method can reduce the effects of environment and improve the precision of
measuring.
Keywords: single-chip microcomputer vibration speed vibration displacement
vibration acceleration