Method and apparatus for detecting the position of the edge of a moving product web
    1.
    发明授权
    Method and apparatus for detecting the position of the edge of a moving product web 有权
    用于检测移动产品网的边缘的位置的方法和装置

    公开(公告)号:US07151715B2

    公开(公告)日:2006-12-19

    申请号:US10917911

    申请日:2004-08-13

    IPC分类号: G01N29/00 G01N29/04

    摘要: A method and an apparatus (1) are used to detect the position of the edge (2) of a moving product web (3). The apparatus (1) has piezoelectric elements (5), which firstly output ultrasonic pulses (10) and secondly pick them up and convert them into an electrical signal. The product web (3) is arranged between the piezoelectric elements (5) and a reflector (11) for this purpose. If the product web (3) is located in the measurement range of the piezoelectric element (5), it attenuates the ultrasonic pulses as a result of reflection or absorption during the double passage of the latter. The position of the product web edge (2) is calculated from this attenuation.

    摘要翻译: 使用方法和装置(1)来检测移动产品腹板(3)的边缘(2)的位置。 装置(1)具有压电元件(5),其首先输出超声脉冲(10),然后将其拾取并将其转换为电信号。 为此目的,产品腹板(3)布置在压电元件(5)和反射器(11)之间。 如果产品卷筒纸(3)位于压电元件(5)的测量范围内,则在后者的双重通过期间,由于反射或吸收而使超声波脉冲衰减。 产品卷边(2)的位置由该衰减计算。