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    • 10. 发明申请
    • METHOD FOR DETERMINING PARAMETERS, FOR EXAMPLE LEVEL, PRESSURE, GAS COMPOSITION IN CLOSED CONTAINERS
    • 用于确定的参数,例如 液位,压力或气体成分在密封的容器
    • WO1998021557A1
    • 1998-05-22
    • PCT/EP1997006298
    • 1997-11-12
    • HEUFT SYSTEMTECHNIK GMBHHEUFT, BernhardGOLLER, Hans-Ulrich
    • HEUFT SYSTEMTECHNIK GMBH
    • G01M03/24
    • G01M3/24G01F23/2966G01L9/0008G01N2291/02836G01N2291/02881
    • Primary mechanical vibrations are generated in a container wall (12) to determine parameters in closed containers. The secondary vibrations caused by the primary mechanical vibrations of the container wall (12) in the container (10), which take place in the are between the closure (12) and the liquid, are recorded and analyzed, whereby the parameters are determined on the basis of recorded frequency progression of said vibrations. Further, the primary vibrations of the closure (12) can also be recorded and analyzed, whereby the inner pressure prevailing inside the container (10) can be determined on the basis of the frequency of said primary vibrations. The frequencies of the primary and secondary vibrations can be determined by conducting a frequency spectrum analysis. The secondary vibrations can be recorded independently from the primary vibrations so that only those vibrations occurring within a timed measurement window are recorded, within which the primary vibrations have already abated.
    • 对于密闭容器中的参数在一个容器壁的确定(12)刺激的初级机械振荡。 通过在容器中的容器壁(12)激发的主机械振动(10)的封闭件(12)和所述液体取位置之间的空间内的二次振动被记录和分析,从这些振动,参数的检测到的频率特性来确定 是。 此外,封闭件(12)的主振荡,可以接收和分析,从在容器中这些主要振荡的频率裁决(10)内部的压力被确定。 初级和次级振动的频率可以通过分析频谱来确定。 二次振动可以从通过仅时间测量窗内发生的被接收在其内的主要振荡已经衰减的振动分离的主振荡作出。