新型电容传感器在板厚板速测量中的应用研究  

Application and research of a new capacitive sensor in rolling speed and thickness measurements

作　　者：韦丽君[1] 尹晓鹏[1] 库国辉 孙广琪 

机构地区：[1]长春工业大学机电工程学院,吉林长春130012 [2]甘肃宏达铝业公司,甘肃兰州730060

出　　处：《传感器世界》2015年第8期19-23,共5页Sensor World

基　　金：吉林省教育厅基金资助项目(项目编号:吉教科合字2014118);吉林省长春市科技局基金资助项目(项目编号:13KG09)

摘　　要：设计了一种新型电容式传感器,采用了电容数字转化器(CDC)技术,解决了传统电容式传感器从电容到数字直接转换的复杂而困难的信号处理问题。通过在测量头外侧设计两个绝缘层和两个屏蔽层,消除了边缘效应对测量结果的影响。新型电容式传感器采用独立双电容结构可同时测量轧板厚度和轧板速度,并且避免了由于轧板上下振动对测量结果的影响。A new capacitive sensor is designed based on the capacitance-to-digital converter （CDC） technology, which solves the complex and difficult signal processing problems in converting traditional capacitive sensor signals into the digital directly. By designing two insulating layers and two shielding layers on the outside of the measuring head, the influence of edge effect on the measuring results are eliminated. The new capacitive sensor adopts two-capacitor sensors, which makes it possible to measure the plate thickness and rolling speed simultaneously and avoid the effect on the measured results from the vibration of the rolling plates up and down.

关 键 词：电容传感器 CDC 信号处理 边缘效应 

分 类 号：TP212[自动化与计算机技术—检测技术与自动化装置]