公开(公告)号：US20240377320A1

公开(公告)日：2024-11-14

申请号：US18659184

申请日：2024-05-09

Applicant: Sikora AG

Inventor： Christian Frank ,  Kolja Tobias Schuh ,  Harald Sikora

IPC: G01N21/3581 ,  G01B11/06 ,  G01B11/12 ,  G01N21/3563

Abstract: A measuring device for measuring a geometric parameter of an object includes a transceiver including a transmission apparatus structured to emit terahertz radiation onto the object. The terahertz radiation is at least partially reflected by the object. A receiving apparatus is structured to receive the terahertz radiation emitted by the transmission apparatus onto the object. A reflector is structured to reflect the terahertz radiation emitted by the transmission apparatus after the terahertz radiation has passed through at least one portion of the object. A holder is structured to support the transceiver and the reflector, and to position the transceiver and the reflector opposite one another on different sides of the object or on different sides of a wall of the object.

公开(公告)号：US20240068939A1

公开(公告)日：2024-02-29

申请号：US18270648

申请日：2021-12-20

Applicant: Sikora AG

Inventor： Harold Sikora ,  Armin Holle ,  Kolja Tobias Schuh

IPC: G01N21/3581 ,  G01N21/89 ,  G01N21/892 ,  G01N21/954

CPC classification number: G01N21/3581 ,  G01N21/8914 ,  G01N21/892 ,  G01N21/954 ,  G01N2021/8918

Abstract: A method is provided for detecting a defect of a strand-like product conveyed in a conveying direction at a conveying speed of more than 50 m/min. The method includes determining a frequency of a lateral movement of the strand-like product. The lateral movement occurs in a direction that is transverse to the conveying direction. Terahertz radiation is emitted at a wavelength by at least one transmitter onto the strand-like product conveyed in the conveying direction. The terahertz radiation is reflected by the strand-like product and received by at least one receiver. A temporary change in the terahertz radiation received by the at least one receiver is detected. A defect in the strand-like product is inferred when the temporary change in the terahertz radiation received by the at least one receiver is higher than the frequency of the lateral movement of the strand-like product.

公开(公告)号：US20230288187A1

公开(公告)日：2023-09-14

申请号：US18118877

申请日：2023-03-08

Applicant: Sikora AG

Inventor： Kolja Tobias Schuh

IPC: G01B11/02 ,  G01N21/88

CPC classification number: G01B11/02 ,  G01N21/88

Abstract: A method for determining dimensional data of an object includes emitting terahertz radiation by a first transmitter onto a surface of the object. The terahertz radiation emitted by the first transmitter is received by a first receiver after the terahertz radiation has passed through the object. Terahertz radiation comprising a bandwidth of less than 5% of a carrier frequency of the terahertz radiation is emitted by a second transmitter onto at least one location on the surface of the object. The terahertz radiation emitted by the second transmitter is received by a second receiver after the terahertz radiation has passed through the object. A dimension of the object is determined from one of: (i) the terahertz radiation received by the second transmitter; and (ii) a temporal or spatial change of the terahertz radiation received by the second receiver in consideration of that received by the first receiver.