Detection device and detection method

专利名称：Detection device and detection method发明人：Nishiguchi, Tadao c/o Omron

Corporation,Ishihara, Naoyuki c/o OmronCorporation,Satoh, Yasuhiro c/o OmronCorporation

申请号：EP07104692.4申请日：20070322公开号：EP1837676A1公开日：20070926

专利附图：

摘要：The invention is to make so as to reduce as far as possible a detection leak in a

case detecting a body having entered into a predetermined range. A pulse sensor havinga first reception system and a second reception system is adopted in regard to onetransmission system. And, a detection distance of the first reception system is set toabout 0.75 [m] for instance. By this, a characteristic of a lowest reception sensitivity of thefirst reception system becomes a curve Seta. Further, about 0.05 [m] which has beendeviated, in regard to the detection distance of the first reception system, by a distancecorresponding to a half-wavelength of a wave of a main frequency within a transmissionsignal to which a band restriction from a transmission system has been applied is set asthe detection distance of the second reception system. By this, the characteristic of thelowest reception sensitivity of the second reception system becomes a curve Setb. As aresult, a detection of the body existing in distance ranges D2 to D5 becomes possible.The present invention can be applied to the pulse sensor.

申请人：OMRON CORPORATION

地址：801, Minamifudodo-cho, Horikawahigashiiru, Shiokoji-dori, Shimogyo-ku Kyoto-shi, Kyoto 600-8530 JP

国籍：JP

代理机构：Brykman, Georges

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