本文選題：金屬 + 線脹系數(shù)�。� 參考：《大學(xué)物理》2017年01期

【摘要】：為提高金屬線脹系數(shù)的測量精度和靈敏度,以方便數(shù)字化測量與微機(jī)處理,以PSD光電傳感器為核心實現(xiàn)微位移測量,采用光學(xué)放大機(jī)構(gòu)提高微位移分辨率,利用BOS-PSD0018芯片實現(xiàn)微位移轉(zhuǎn)換,并用單片機(jī)系統(tǒng)實現(xiàn)金屬線脹系數(shù)的數(shù)字化處理與顯示.用銅棒進(jìn)行了標(biāo)定測試,用鐵棒進(jìn)行檢測試驗,檢測試驗表明金屬線脹系數(shù)最大相對誤差為±2.3%,用光學(xué)放大機(jī)構(gòu)使微位移分辨率比提高4倍.
[Abstract]:In order to improve the measuring accuracy and sensitivity of metal linear expansion coefficient, the micro displacement measurement is realized with PSD photoelectric sensor as the core, and the resolution of micro displacement is improved by optical amplification mechanism. The BOS-PSD0018 chip is used to realize the micro-displacement conversion, and the single-chip microcomputer system is used to realize the digital processing and display of the metal linear expansion coefficient. The calibration test with copper rod and the test with iron bar show that the maximum relative error of linear expansion coefficient of metal is 鹵2.3, and the resolution ratio of micro-displacement is increased 4 times by optical amplification mechanism.
【作者單位】： 湖南科技學(xué)院電子與信息工程學(xué)院;
【基金】：2013年湖南省科技廳科技計劃項目(2013NK3026) 湖南科技學(xué)院“電路與系統(tǒng)”重點學(xué)科建設(shè)項目資助
【分類號】：O551.3-34
，

本文編號：1944605