壓電式加速度傳感器，又稱振動(dòng)傳感器，是基于壓電晶體的壓電效應(yīng)工作的

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更新時(shí)間：2024-06-26

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壓電式加速度傳感器，又稱振動(dòng)傳感器，是基于壓電晶體的壓電效應(yīng)工作的。某些晶體在一定方向上受力變形時(shí)，其內(nèi)部會(huì)產(chǎn)生極化現(xiàn)象，同時(shí)在它的兩個(gè)表面上產(chǎn)生符號(hào)相反的電荷；當(dāng)外力去除后，又重新恢復(fù)到不帶電狀態(tài)，這種現(xiàn)象稱為“壓電效應(yīng)"，具有“壓電效應(yīng)"的晶體稱為壓電晶體。常用的壓電晶體有石英、壓電陶瓷等，在現(xiàn)代生產(chǎn)生活中被應(yīng)用于許許多多的方面，如手提電腦的硬盤抗摔保護(hù)，目前用的數(shù)碼相機(jī)和攝像機(jī)里，也有加速度傳感器，用來檢測(cè)拍攝時(shí)候的手部的振動(dòng)，并根據(jù)這些振動(dòng)，自動(dòng)調(diào)節(jié)相機(jī)的聚焦。壓電加速度傳感器還應(yīng)用于汽車安全氣囊、防抱死系統(tǒng)、牽引控制系統(tǒng)等安全性能方面。

美國(guó)Dytran的3235C1是一款高溫型加速度傳感器/振動(dòng)傳感器，具有體積小、結(jié)構(gòu)堅(jiān)固，高密封、耐高溫等特點(diǎn)，靈敏度50pC/g，工作溫度高達(dá)+287℃。

The Dytran 3235C1 is a high temperature differential output accelerometer, offering extreme stability over a wide operating temperature range. Offered with a 50 pC/g sensitivity, model 3235C1 is unique in that it offers high charge sensitivity while simultaneously offering a balanced differential output.

Featuring a transverse mounted glass-to-metal sealed 2-pin radial connector and an industry standard tri-bolt mount, the Dytran model 3235C1 can reliably operate in temperatures up to +550°F (+287°C). Accelerometers are packaged in a stainless steel housing, hermetically sealed for reliable operation in high humidity and dirty environments, and case isolated to avoid EMI/ground loop interference.

特性

1. 50 pC/g sensitivity

2. 10,000 Hz upper frequency range (±15%)

3. 2-pin radial connector

4. Tri-bolt mount

5. 69 grams

6. Stainless steel

7. Hermetic

8. Case isolated

9. Differential output

10. High sensitivity

11. +550°F (+287°C) operation