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公开(公告)号：US20150102205A1
公开(公告)日：2015-04-16
申请号：US14479443
申请日：2014-09-08
Applicant: Keyence Corporation
Inventor： Jiro Baba , Tomoki Hanada
Abstract: Provided is a photoelectric sensor that detects a workpiece by measuring light transmission time. A photoelectric sensor includes: a light emitting element which repeatedly generates detection light; a light receiving element which receives reflected light of the detection light; a binarization processing section which binarizes a light receiving signal; a waveform detection section which detects waveform data indicating a temporal change of the binarized light receiving signal; a waveform integration section which matches light emitting timing of the light receiving element to integrate two or more pieces of waveform data and generates integrated waveform data; and a workpiece discrimination section which discriminates presence or absence of a workpiece based on the integrated waveform data, whereby the reflected light is sampled at a high speed while a circuit scale is suppressed, to detect the workpiece.
Abstract translation: 提供了一种通过测量光传输时间来检测工件的光电传感器。 光电传感器包括：重复产生检测光的发光元件; 接收检测光的反射光的光接收元件; 二值化处理部，其将光接收信号二值化; 波形检测部，其检测表示二值化光接收信号的时间变化的波形数据; 波形积分部分，其匹配所述光接收元件的发光定时以集成两个或更多个波形数据，并生成积分波形数据; 以及基于积分波形数据来区分工件的存在或不存在的工件识别部，由此在抑制电路规模的同时高速地对反射光进行采样，以检测工件。
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公开(公告)号：US09354352B2
公开(公告)日：2016-05-31
申请号：US14479443
申请日：2014-09-08
Applicant: Keyence Corporation
Inventor： Jiro Baba , Tomoki Hanada
Abstract: Provided is a photoelectric sensor that detects a workpiece by measuring light transmission time. A photoelectric sensor includes: a light emitting element which repeatedly generates detection light; a light receiving element which receives reflected light of the detection light; a binarization processing section which binarizes a light receiving signal; a waveform detection section which detects waveform data indicating a temporal change of the binarized light receiving signal; a waveform integration section which matches light emitting timing of the light receiving element to integrate two or more pieces of waveform data and generates integrated waveform data; and a workpiece discrimination section which discriminates presence or absence of a workpiece based on the integrated waveform data, whereby the reflected light is sampled at a high speed while a circuit scale is suppressed, to detect the workpiece.
Abstract translation: 提供了一种通过测量光传输时间来检测工件的光电传感器。 光电传感器包括：重复产生检测光的发光元件; 接收检测光的反射光的光接收元件; 二值化处理部，其将光接收信号二值化; 波形检测部，其检测表示二值化光接收信号的时间变化的波形数据; 波形积分部分，其匹配所述光接收元件的发光定时以集成两个或更多个波形数据，并生成积分波形数据; 以及工件识别部，其基于积分波形数据来判别工件的存在或不存在，由此在抑制电路规模的同时高速地对反射光进行采样，以检测工件。
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公开(公告)号：US20190285451A1
公开(公告)日：2019-09-19
申请号：US16268513
申请日：2019-02-06
Applicant: Keyence Corporation
Inventor： Shinichi Tsukigi , Jiro Baba
Abstract: To provide a clamp-on type ultrasonic flow sensor capable of highly accurately measuring a flow rate. First and second head cables CA1 and CA2 are connected between a head section 10 and an intermediate section 20. A relay cable CA3 is connected between the intermediate section 20 and a main body section 30. Ultrasonic elements are housed in casings 11c and 12c of the head section 10. A driving circuit for driving the ultrasonic elements and a signal processing section configured to perform signal processing on ultrasonic signals output from the ultrasonic elements are housed in a casing 20c of the intermediate section 20. In the intermediate section 20, a switching circuit configured to switch a connection state of the two ultrasonic elements of the head section 10 and the signal processing section is provided.
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