公开(公告)号：US5467194A

公开(公告)日：1995-11-14

申请号：US135315

申请日：1993-10-12

申请人： Kari Pellinen ,  Jukka Koiranen ,  Kari Erkkila ,  Juhani Ahola ,  Harri Vahatalo

发明人： Kari Pellinen ,  Jukka Koiranen ,  Kari Erkkila ,  Juhani Ahola ,  Harri Vahatalo

IPC分类号： D06H3/08 ,  B65H23/02 ,  B65H26/02 ,  G01B11/00 ,  G01N21/88 ,  G01N21/89 ,  G01N21/892 ,  G01N21/93 ,  G01V8/12 ,  G01N21/47

CPC分类号： B65H23/0216 ,  B65H26/025 ,  B65H2557/10

摘要： A method and apparatus for identifying a moving web in a paper making machine are disclosed. The method includes of the steps of illuminating the web with the light from a transmitter, reflecting the transmitted light off the web, receiving the reflected light with a light transducer to produce an electrical signal corresponding to the intensity of the received light, and identifying the moving web based on the received signal. The intensity of the transmitted light is adjusted so that the received light signal from the transducer is normalized with respect to an optimum value. The apparatus includes a light transmitter, a light receiver, and a control and identification circuit which identifies the web based on a signal from the light receiver, and which adjusts the intensity of the light transmitter to optimize the reception of the signal from the light receiver in order to minimize the effects of environmental interference.

摘要翻译： 公开了一种在造纸机中识别移动幅材的方法和设备。 该方法包括以下步骤：利用来自发射器的光来照射幅材，将透射的光反射离开幅材，用光转换器接收反射光以产生对应于所接收光的强度的电信号，以及识别 基于接收到的信号移动网络。 调整透射光的强度，使得来自换能器的接收光信号相对于最佳值进行归一化。 该装置包括光发射器，光接收器和控制和识别电路，其基于来自光接收器的信号识别网，并且调节光发射器的强度以优化来自光接收器的信号的接收 以尽量减少环境干扰的影响。