公开(公告)号：US20240375856A1

公开(公告)日：2024-11-14

申请号：US18687946

申请日：2022-09-02

Applicant: ZN TECHNOLOGIES CO., LTD.

Inventor： Chul Gyun PARK ,  Chang Soo KANG ,  Dong Tak KIM

IPC: B65D90/48 ,  B65D90/00

Abstract: A management system according to the present invention may comprise: a body including an opening/closing door; a first terminal that is located inside the body, measures environment information inside the body, and generates first data on the basis of the measured environment information; a second terminal that is located outside the body, generates second data including state information of the opening/closing door, and generates third data on the basis of the first data and the second data; and a server that generates a signal including risk coefficient information indicating a contamination level inside the body on the basis of the third data, and transmits the signal to a user terminal.

公开(公告)号：US20200303819A1

公开(公告)日：2020-09-24

申请号：US16631446

申请日：2017-08-14

Applicant: ZN TECHNOLOGIES CO., LTD. ,  UNIST (ULSAN NATIONAL INSTITUTE OF SCIENCE AND TECHNOLOGY) ,  ZN OCEAN CO., LTD.

Inventor： Chang Soo KANG ,  Na Young KIM ,  Eun Gyu BAE ,  Mi Young KIM ,  Chul Gyun PARK ,  Franklin Don BIEN

IPC: H01Q5/335 ,  H01Q1/34 ,  H04B5/00 ,  H04M1/18

Abstract: The present invention relates to an interphone device for use in ships, the interphone device comprising: an input/output unit to which a voice is input or from which a voice is output; a transmission/reception circuit unit which receives the voice from the input/output unit and provides a first signal obtained by encoding and modulating the received voice; and an antenna which is attached to the metal hull of the ship, forms an electromagnetic field in the metal hull, and carries the first signal received from the transmission/reception circuit unit by the electromagnetic field, so as to propagate the first signal.