大学物理 ›› 2017, Vol. 36 ›› Issue (1): 25-27.doi: 10.16854 /j.cnki.1000-0712.2017.01.009

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基于BOS - PSD0018 的金属线胀系数测定

唐鑫凌,刘志壮,张文昭   

  1. 湖南科技学院电子与信息工程学院,湖南永州425199
  • 收稿日期:2016-04-13 修回日期:2016-06-06 出版日期:2017-01-20 发布日期:2017-01-20
  • 通讯作者: 刘志壮,Email: liuzz168@ 126.com.
  • 作者简介:唐鑫凌( 1983—) ,湖南永州人,男,湖南科技学院实验师,硕士,主要研究方向为嵌入式系统研究工作
  • 基金资助:
    2013 年湖南省科技厅科技计划项目( 2013NK3026) 和湖南科技学院“电路与系统”重点学科建设项目资助

Determination of metal linear expansion coefficient based on BOS-PSD0018

TANG Xin-ling,LIU Zhi-zhuang,ZHANG Wen-zhao   

  1. College of Electronics and Information Engineering,Hunan University of Science and Engineering,Yongzhou,Hunan 425199,China
  • Received:2016-04-13 Revised:2016-06-06 Online:2017-01-20 Published:2017-01-20

摘要: 为提高金属线胀系数的测量精度和灵敏度,以方便数字化测量与微机处理,以PSD 光电传感器为核心实现微位移 测量,采用光学放大机构提高微位移分辨率,利用BOS-PSD0018 芯片实现微位移转换,并用单片机系统实现金属线胀系数的数字化处理与显示. 用铜棒进行了标定测试,用铁棒进行检测试验,检测试验表明金属线胀系数最大相对误差为±2. 3%,用光学放大机构使微位移分辨率比提高4 倍.

关键词: 金属, 线胀系数, BOS-PSD0018, 数字化测量

Abstract: In order to improve measurement precision and sensitivity of metal linear expansion coefficient,thus simplify digital measurement and computer processing,the micrometric displacement is completed by using the core element of PSD photoelectric sensor. An optical enlargement device is employed to advance micromovement resolution ratio. The chip BOS-PSD0018 is employed to achieve micromovement conversion. A microprocessor is utilized to realize digital procession and display for metal linear expansion coefficient. The standardization test is completed by using a copper rod; the detection test is conducted by using iron rod. The results show that the maximum relative error of metal linear expansion coefficient is less than ±2. 3%,the optical enlargement device can   increase 4 times for the resolution ratio of micromovement.

Key words: metal, coefficient of linear expansion, BOS-PSD0018, digital measurement