壓電沖擊振動(dòng)傳感器的基本原理

　　壓電傳感器用于彎曲、觸覺(jué)、振動(dòng)和沖擊測(cè)量。它的基本原理，在過(guò)于簡(jiǎn)單化的風(fēng)險(xiǎn)，如下：當(dāng)一個(gè)結(jié)構(gòu)時(shí)，它的經(jīng)驗(yàn)加速度。一個(gè)壓電沖擊傳感器，反過(guò)來(lái)，可以產(chǎn)生物理加速收費(fèi)。然后，這些屬性組合用于修改響應(yīng)或減少噪聲和振動(dòng)。

　　為什么那么重要？因?yàn)檎駝?dòng)和沖擊可以縮短任何電子和機(jī)電系統(tǒng)的壽命。特別是在長(zhǎng)時(shí)間的振動(dòng)之后，可以很好地控制導(dǎo)線和導(dǎo)線。焊點(diǎn)可以斷開，PCB的痕跡會(huì)因沖擊和脈沖沖擊而輕微撕裂，造成最難調(diào)試的系統(tǒng)故障；間歇性故障。

　　本文討論了壓電沖擊和振動(dòng)傳感器和傳感器技術(shù)，專注于提供產(chǎn)品，以及設(shè)計(jì)的問(wèn)題和設(shè)計(jì)技術(shù)。

　　How it works

　　The piezoelectric effect was discovered by Pierre and Jacques Curie in the latter part of the 19th century. They discovered that minerals such as tourmaline and quartz could transform mechanical energy into an electrical output. The voltage induced from pressure （Greek： piezo） is proportional to that applied pressure， and piezoelectric devices can be used to detect single-pressure events as well as repetitive events.

　　Still， the ability of certain crystals to exhibit electrical charges under mechanical loading was of no practical use until very-high-input impedance amplifiers enabled engineers to amplify the signals produced by these crystals.