公开(公告)号：US20220304614A1

公开(公告)日：2022-09-29

申请号：US17337666

申请日：2021-06-03

Applicant: NATIONAL APPLIED RESEARCH LABORATORIES

Inventor： CHUN-MING HUANG ,  CHEN-CHIA CHEN ,  GANG-NENG SUNG ,  CHIEN-MING WU

IPC: A61B5/369 ,  A61B5/00 ,  A61B5/273 ,  H04R1/10

Abstract: The present invention provides an electroencephalogram measurement structure formed by an ear-hanging structure and a second circuit board. The ear-hanging structure includes a body. An ear-hanging member is disposed at the extension of the body. The body can be worn on the ear via the ear-hanging member. In addition, a first reference electrode and a second reference electrode are disposed on the body and coupled to a first circuit board. The first circuit board is coupled to an electrical jack; the second circuit board is coupled to the electrical jack via an electrical plug. Thereby, the electroencephalogram measurement can be performed simply by wearing the ear-hanging member on the ear of the person under test. Hence, the problems of complicated wiring and inconvenience in wearing can be solved concurrently.

公开(公告)号：US20210063229A1

公开(公告)日：2021-03-04

申请号：US16885804

申请日：2020-05-28

Applicant: NATIONAL APPLIED RESEARCH LABORATORIES

Inventor： CHUN-MING HUANG ,  CHEN-CHIA CHEN ,  CHIH-HSING LIN ,  CHIEN-MING WU

IPC: G01F23/296

Abstract: A liquid level monitoring system includes: a hardware unit with a tube to extend through a surface of a liquid; a processor unit generating control signals that respectively correspond to target frequencies; a sound generator unit generating, respectively based on the control signals, incident sound waves that transmit in the tube and that are reflected by the surface of the liquid to respectively form reflected sound waves; and a sensor unit for sensing the reflected sound waves to respectively generate feedback signals. The processor unit determines a maximum amplitude frequency based on the feedback signals, and calculates a level of the surface of the liquid based on the maximum amplitude frequency and a length of the tube.