专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明授权

US08093913B2 Film thickness measurement device and method 有权
标题翻译：薄膜厚度测量装置及方法
公开(公告)号：US08093913B2
公开(公告)日：2012-01-10
申请号：US12108701
申请日：2008-04-24
申请人： Hidetoshi Takimoto , Takehito Yagi , Yoshiyuki Saito , Tsuyoshi Terauchi
发明人： Hidetoshi Takimoto , Takehito Yagi , Yoshiyuki Saito , Tsuyoshi Terauchi
IPC分类号： G01R27/26
CPC分类号： G01N33/30
摘要： A film thickness measurement device, which measures the film thickness of an oil film of lubricating oil, formed in a gap between a piston ring and an electrode provided flush with a piston ring sliding surface of a cylinder liner, by detecting the electrostatic capacitance across the gap, employs an electrostatic capacitance detection portion, which charges the electrostatic capacitance by supplying a constant current to the electrode, detects the electrostatic capacitance based on changes in the charging voltage accompanying the charging, and outputs a detection signal indicating the electrostatic capacitance, and a film thickness computation portion, which calculates the film thickness of the oil film based on the electrostatic capacitance indicated by the detection signal input from the electrostatic capacitance detection portion.
摘要翻译：一种薄膜厚度测量装置，其测量形成在活塞环和电极之间的间隙中的润滑油油膜的膜厚，通过检测气缸套的静电电容而与气缸套的活塞环滑动表面齐平间隙，采用静电电容检测部分，其通过向电极提供恒定电流来对静电电容进行充电，基于随充电的充电电压的变化检测静电电容，并输出表示静电电容的检测信号，以及膜厚计算部，其根据从静电电容检测部输入的检测信号表示的静电电容计算油膜的膜厚。

IPRDB

热门服务

关于我们

友情链接

联系方式