如何在結(jié)構(gòu)監(jiān)測(cè)系統(tǒng)中使用基于MEMS的壓電傳感器來(lái)彌合功率間隙

　　在建筑物、橋梁和飛機(jī)上未被發(fā)現(xiàn)的結(jié)構(gòu)弱點(diǎn)可能是災(zāi)難性的。這些復(fù)雜的結(jié)構(gòu)在設(shè)計(jì)和建筑材料上有很大的不同，并且在不同的疲勞點(diǎn)上承受多個(gè)應(yīng)力。無(wú)論是古代紀(jì)念碑參觀，100 +歲的橋梁承受交通荷載從未設(shè)想的結(jié)構(gòu)，或大膽的現(xiàn)代的高樓大廈和“海上橋梁，基礎(chǔ)設(shè)施監(jiān)控已經(jīng)成為常態(tài)。傳感器和無(wú)線技術(shù)的進(jìn)步突出了結(jié)構(gòu)健康監(jiān)測(cè)作為無(wú)線傳感器網(wǎng)絡(luò)的增長(zhǎng)市場(chǎng)。

　　However，the advantages of significant盡管無(wú)電纜、超低功耗操作，包括敵意環(huán)境限制，極and Battery終身可靠實(shí)用的障礙，have to be in some扇區(qū)。

　　Figure 1： Old bridges like this one over Hurricane Gulch， Alaska， or new， such as the Great Belt Bridge， Denmark， require constant monitoring to ensure structural integrity. Vibration energy harvesting provides an ideal means of powering remotely-located wireless sensors.

　　New research developments in MEMS-based piezoelectric energy-harvesting technology are addressing these challenges to provide extremely-robust， high-reliability， battery-free power for sensors in structural monitoring applications. This article will review recent developments， from the UK and the US， to illustrate the potential for energy harvesting in this market.

　　Such devices， as they become commercially available， will require associated electronic circuitry， which must be both ultra-low-power itself and provide power management at low levels with power conversion， rectification， and voltage boosting.

　　Emerging technology， such as sensors， fiber optics， computer vision， wireless sensor networks， and energy harvesting are providing innovative solutions to ongoing applications. MEMS technology for vibration and piezoelectric-based， self-powered sensors， with application in structural health monitoring， is the subject of advanced research around the world.