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1. 发明授权

US5633454A Pinhole inspecting apparatus 失效
标题翻译：针孔检查装置
公开(公告)号：US5633454A
公开(公告)日：1997-05-27
申请号：US537916
申请日：1995-11-01
申请人： Hiroshi Abe , Kazuhiko Ishio , Yoshihiro Murakawa , Akira Yamamoto
发明人： Hiroshi Abe , Kazuhiko Ishio , Yoshihiro Murakawa , Akira Yamamoto
IPC分类号： G01M3/04 , G01M3/22 , G01M3/32 , G01M3/20
CPC分类号： G01M3/226
摘要： A pinhole inspecting apparatus is provided which can accurately and speedily inspect a pinhole on a closed container.The pinhole inspecting apparatus of the present invention comprises a pallet 1 for dischargeably containing a closed container 11 filled with a gas, the pallet 1 having a suction hole 13 such that when the suction hole 13 is closed the interior of the pallet is brought in closed condition, a gas leakage detecting unit 2 adapted to be connected at an inspecting position to the suction hole 13 for communication with the interior of the pallet 1, such that when a gas of the same kind as the first mentioned gas is present in that interior, the gas leakage detecting unit generates an analog signal having a voltage corresponding to amount of the leakage of the gas per unit time, an A/D converter 3 for converting the analog signal into a digital signal, and a first arithmetic unit 4 for finding from the digital signal a slope of a regression line representing the relationship between voltage and time, and calculating the difference between the value of the slope and a maximum slope value which has been preliminarily inputted with respect to a regression line for the same kind of gas in the air as the first mentioned gas, the first arithmetic unit being further operative to output an abnormality signal when the difference falls out of an allowable range therefor.
摘要翻译： PCT No.PCT / JP95 / 00603 Sec。 371日期：1995年11月1日 102（e）1995年11月1日PCT PCT 1995年3月30日PCT公布。 WO95 / 27193 PCT出版物日期1995年10月12日提供了能够准确，快速地检查密闭容器上的针孔的针孔检查装置。本发明的针孔检查装置包括托盘1，其用于可放置地容纳填充有气体的密闭容器11，托盘1具有吸入孔13，使得当吸入孔13关闭时，托盘的内部被封闭条件，气体泄漏检测单元2，其适于在检查位置连接到吸入孔13以与托盘1的内部连通，使得当在该内部存在与前述气体相同种类的气体时气体泄漏检测单元生成具有对应于每单位时间的气体泄漏量的电压的模拟信号，将模拟信号转换为数字信号的A / D转换器3和用于求出的第一算术单元4 从数字信号中，表示电压和时间之间的关系的回归线的斜率，并计算斜率值与最大斜率值之间的差已经相对于与第一种气体相同的空气中的相同种类的气体的回归线预先输入h，第一运算单元进一步用于当差值在其允许范围之外时输出异常信号。

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