公开(公告)号：US20140077084A1

公开(公告)日：2014-03-20

申请号：US14028096

申请日：2013-09-16

Applicant: YOKOGAWA ELECTRIC CORPORATION

Inventor： Shunsuke EBISUMOTO ,  Kazuhiro HASHIZUMI ,  Yoshiharu SHIRATORI

IPC: H04N5/378

CPC classification number: H04N5/378 ,  G01J1/18 ,  H03K17/9636 ,  H03K2217/94026 ,  H03K2217/94031 ,  H03K2217/94108

Abstract: A sensitivity adjustment device may include: a light receiver configured to receive a reflected light that has been emitted from a light emitting unit and reflected by a reflector, the light receiver being configured to convert the reflected light into an analog electrical signal; an A/D converter configured to convert the analog electrical signal into a digital signal; a threshold value calculator configured to calculate a threshold value with reference to a voltage level of the digital signal that has been sequentially converted and output by the A/D converter; and a determination unit configured to compare a high voltage level of the digital signal with the threshold value.

Abstract translation: 灵敏度调节装置可以包括：被配置为接收从发光单元发射并被反射器反射的反射光的光接收器，所述光接收器被配置为将所述反射光转换为模拟电信号; A / D转换器，被配置为将模拟电信号转换为数字信号; 阈值计算器，被配置为参考由A / D转换器顺次转换并输出的数字信号的电压电平来计算阈值; 以及确定单元，被配置为将数字信号的高电压电平与阈值进行比较。