公开(公告)号：US20240213643A1

公开(公告)日：2024-06-27

申请号：US18169211

申请日：2023-02-15

Applicant: Waseda University

Inventor： Seiji NISHI ,  Takuro SATO ,  Kazuhiko TAMESUE ,  Tetsuya KAWANISHI

IPC: H01P3/02 ,  H01P1/02

CPC classification number: H01P3/02 ,  H01P1/02

Abstract: The first conductor plate has a groove portion that has a rectangular cross section and is formed in parallel with a first main surface such that the longitudinal direction becomes a first direction, and a first vertical tube portion formed in a direction away from the second conductor plate in a second direction orthogonal to the first direction and the first main surface, with a branch position in the groove as a starting point. The second conductor plate includes a reflection portion that is inserted into the groove portion in a manner protruding from a second main surface, which is a flat surface of the second conductor plate in contact with the first main surface, and has a reflection surface that reflects the radio wave, propagated along the groove portion, toward the first vertical tube portion.

公开(公告)号：US20180059240A1

公开(公告)日：2018-03-01

申请号：US15690202

申请日：2017-08-29

Applicant: WASEDA UNIVERSITY ,  OPTOQUEST CO., LTD

Inventor： Tetsuya KAWANISHI ,  Masaru FUKUMITSU

IPC: G01S13/93 ,  G08G1/16 ,  G01S13/86 ,  B60W30/095

CPC classification number: G01S13/931 ,  B60Q9/008 ,  B60W30/095 ,  B60W50/14 ,  G01S13/867 ,  G01S2013/9339 ,  G01S2013/9375 ,  G08G1/0962 ,  G08G1/166 ,  G08G1/167

Abstract: An extravisual obstacle detecting system includes: a radio wave receiving unit 15 configured to receives a radio wave from a radio wave source 13 attached to an object 11; one or a plurality of external sensors 19 attached to the vehicle 17 and configured to detect an external obstacle; an alarm generating unit 21 configured to generate a predetermined alarm, and, when the radio wave receiving unit 15 receives the radio wave from the object 11, and the external sensors 19 do not detect the object 11, the alarm generating unit 21 generates the first alarm.

公开(公告)号：US20220283291A1

公开(公告)日：2022-09-08

申请号：US17563062

申请日：2021-12-28

Applicant: WASEDA UNIVERSITY

Inventor： Tetsuya KAWANISHI

IPC: G01S13/87 ,  G01S13/34 ,  G01S13/10 ,  G01S13/934 ,  G01S13/32

Abstract: To provide a foreign-object system which uses a plurality of radars, and which can detect a foreign object that is present on a runway or the like and which can suppress interference between radars. A foreign-object detection system including a first radar 11, a second radar 21 connected to the first radar via a network 33, and a signal source 31 for transmitting a synchronization signal to the first radar and the second radar via the network, said foreign-object detection system wherein interference generated due to a radar signal outputted from the second radar being reflected by a reflective body and inputted to the first radar is prevented by controlling a delay time that corresponds to |τ1i−τ2j|, where τ1i is the time taken for the synchronization signal to be transmitted from the signal source to the first radar, and τ2j is the time taken for the synchronization signal to be transmitted from the signal source to the second radar.