基于單片機(jī)的發(fā)動(dòng)機(jī)振動(dòng)速度、位移和加速度測(cè)量方法

本文介紹了一種基于單片機(jī)的發(fā)動(dòng)機(jī)振動(dòng)速度、位移和加速度測(cè)量方法。該方法首先
對(duì)發(fā)動(dòng)機(jī)的振動(dòng)傳感器信號(hào)進(jìn)行高、低通濾波，然后通過模擬開關(guān)將其轉(zhuǎn)化為電壓信
號(hào)，再經(jīng)過RMS 幅值測(cè)量元件和壓頻轉(zhuǎn)換器轉(zhuǎn)變成頻率信號(hào)，由單片機(jī)對(duì)頻率信號(hào)進(jìn)
行計(jì)數(shù)、計(jì)算和顯示測(cè)量結(jié)果。對(duì)振動(dòng)速度進(jìn)行積分和微分，可得到振動(dòng)位移和加速
度，實(shí)測(cè)結(jié)果表明，該方法可以有效地減少環(huán)境因素對(duì)電子元件的影響，提高測(cè)量精
度。
關(guān)鍵詞：?jiǎn)纹瑱C(jī) 振動(dòng)速度 振動(dòng)位移 振動(dòng)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