公开(公告)号：US20190285450A1

公开(公告)日：2019-09-19

申请号：US16268512

申请日：2019-02-06

Applicant: Keyence Corporation

Inventor： Shinichi Tsukigi ,  Yasunori Kawaguchi

IPC: G01F1/66 ,  G01F15/14

Abstract: To provide a clamp-on type ultrasonic flow sensor capable of preventing deterioration in measurement accuracy of a flow rate due to deformation of a pipe. Elastic couplants CP1 and CP2 formed to surround the outer circumferential surface of a pipe are fixed while being pressed on the pipe P by fixing inner surfaces FS of two clamp members 131 and 132. An ultrasonic wave is propagated through the elastic couplants CP1 and CP2 and fluid in the pipe between a first ultrasonic element 101 and a second ultrasonic element 102. A cross section of the fixing inner surfaces FS of the clamp members 131 and 132 has a shape of a regular even-numbered polygonal shape centering on the axis of the pipe.

公开(公告)号：US09958329B2

公开(公告)日：2018-05-01

申请号：US15257938

申请日：2016-09-07

Applicant: Keyence Corporation

Inventor： Shinichi Tsukigi

IPC: H05B37/02 ,  G01J3/36 ,  G01J3/46 ,  G01J3/10 ,  G01J3/50 ,  G01J3/51 ,  G05B19/401 ,  G05B19/404 ,  G01J3/02 ,  G09G3/04 ,  G01J3/12 ,  G01J3/28

CPC classification number: G01J3/463 ,  G01J3/0286 ,  G01J3/10 ,  G01J3/36 ,  G01J3/50 ,  G01J3/513 ,  G01J2003/1213 ,  G01J2003/2833 ,  G01J2003/466 ,  G05B19/401 ,  G05B19/404 ,  G09G3/04

Abstract: There is provided a photoelectric switch capable of accurately detecting even such a workpiece where a tint changes within the same workpiece, while preventing erroneous detection. The photoelectric switch includes: a light projecting unit; a light receiving unit; a coincidence degree calculating unit for comparing the acquired color information with a reference color to calculate a coincidence degree of both of the color information. When the color information is newly acquired, a detection signal generating unit compares, with a detection determination threshold, the highest coincidence degree of coincidence degrees calculated by respectively comparing the color information newly acquired, with the two or more reference colors, to perform workpiece determination.

公开(公告)号：US20170102266A1

公开(公告)日：2017-04-13

申请号：US15257940

申请日：2016-09-07

Applicant: Keyence Corporation

Inventor： Shinichi Tsukigi ,  Sohei Kanoda ,  Yu Babasaki

IPC: G01J3/02 ,  G01V8/12 ,  G01J3/28

CPC classification number: G01J3/0275 ,  B23K26/032 ,  G01J3/0208 ,  G01J3/0237 ,  G01J3/0262 ,  G01J3/0286 ,  G01J3/0289 ,  G01J3/28 ,  G01J3/36 ,  G01J3/513 ,  G01J2003/1213 ,  G01J2003/2833 ,  G01J2003/466 ,  G01N21/251 ,  G01N21/31 ,  G01N2201/062 ,  G01V8/12 ,  G05B19/401 ,  G05B19/404

Abstract: There is provided a photoelectric switch capable of reducing a size of a whole device while suppressing light amount irregularity and color irregularity of detected light. The photoelectric switch includes: a surface mount LED, configured to generate a light containing a plurality of color components with different hues; an optical shield disposed between the surface mount LED and a light projecting lens to shield the light around an optical opening passing the light from the surface mount LED to the light projecting lens; a light receiving element configured to selectively receive the light to generate a plurality of light reception signals; a controller configured to control a light projecting amount of the surface mount LED based on the light reception signal.

公开(公告)号：US10732018B2

公开(公告)日：2020-08-04

申请号：US16268512

申请日：2019-02-06

Applicant: Keyence Corporation

Inventor： Shinichi Tsukigi ,  Yasunori Kawaguchi

IPC: G01F1/66 ,  G01F15/14

Abstract: To provide a clamp-on type ultrasonic flow sensor capable of preventing deterioration in measurement accuracy of a flow rate due to deformation of a pipe. Elastic couplants CP1 and CP2 formed to surround the outer circumferential surface of a pipe are fixed while being pressed on the pipe P by fixing inner surfaces FS of two clamp members 131 and 132. An ultrasonic wave is propagated through the elastic couplants CP1 and CP2 and fluid in the pipe between a first ultrasonic element 101 and a second ultrasonic element 102. A cross section of the fixing inner surfaces FS of the clamp members 131 and 132 has a shape of a regular even-numbered polygonal shape centering on the axis of the pipe.

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

IPC: G01F1/66 ,  G01F15/14

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.

公开(公告)号：US09933306B2

公开(公告)日：2018-04-03

申请号：US15257940

申请日：2016-09-07

Applicant: Keyence Corporation

Inventor： Shinichi Tsukigi ,  Sohei Kanoda ,  Yu Babasaki

IPC: G01J3/02 ,  G01J3/28 ,  G01V8/12 ,  G01J3/51 ,  B23K26/03 ,  G01J3/36 ,  G01N21/31 ,  G05B19/401 ,  G05B19/404 ,  G01N21/25 ,  G01J3/12 ,  G01J3/46

CPC classification number: G01J3/0275 ,  B23K26/032 ,  G01J3/0208 ,  G01J3/0237 ,  G01J3/0262 ,  G01J3/0286 ,  G01J3/0289 ,  G01J3/28 ,  G01J3/36 ,  G01J3/513 ,  G01J2003/1213 ,  G01J2003/2833 ,  G01J2003/466 ,  G01N21/251 ,  G01N21/31 ,  G01N2201/062 ,  G01V8/12 ,  G05B19/401 ,  G05B19/404

Abstract: There is provided a photoelectric switch capable of reducing a size of a whole device while suppressing light amount irregularity and color irregularity of detected light. The photoelectric switch includes: a surface mount LED, configured to generate a light containing a plurality of color components with different hues; an optical shield disposed between the surface mount LED and a light projecting lens to shield the light around an optical opening passing the light from the surface mount LED to the light projecting lens; a light receiving element configured to selectively receive the light to generate a plurality of light reception signals; a controller configured to control a light projecting amount of the surface mount LED based on the light reception signal.

公开(公告)号：US20170102271A1

公开(公告)日：2017-04-13

申请号：US15257938

申请日：2016-09-07

Applicant: Keyence Corporation

Inventor： Shinichi Tsukigi

IPC: G01J3/46 ,  G01J3/50 ,  G01J3/10

CPC classification number: G01J3/463 ,  G01J3/0286 ,  G01J3/10 ,  G01J3/36 ,  G01J3/50 ,  G01J3/513 ,  G01J2003/1213 ,  G01J2003/2833 ,  G01J2003/466 ,  G05B19/401 ,  G05B19/404 ,  G09G3/04

Abstract: There is provided a photoelectric switch capable of accurately detecting even such a workpiece where a tint changes within the same workpiece, while preventing erroneous detection. The photoelectric switch includes: a light projecting unit; a light receiving unit; a coincidence degree calculating unit for comparing the acquired color information with a reference color to calculate a coincidence degree of both of the color information. When the color information is newly acquired, a detection signal generating unit compares, with a detection determination threshold, the highest coincidence degree of coincidence degrees calculated by respectively comparing the color information newly acquired, with the two or more reference colors, to perform workpiece determination.