Keyence Corporation

Jiro Baba

Tomoki Hanada

Shinichi Tsukigi

To provide a clamp-on type ultrasonic flow sensor capable of highly accurately measuring a flow rate. First and second head cables CAand CAare connected between a head sectionand an intermediate section. A relay cable CAis connected between the intermediate sectionand a main body section. Ultrasonic elements are housed in casingsandof the head section. 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 casingof the intermediate section. In the intermediate section, a switching circuit configured to switch a connection state of the two ultrasonic elements of the head sectionand the signal processing section is provided.

Clamp-on type ultrasonic flow sensor

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.

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Osaka, Japan

Jiro Baba