公开(公告)号：US20170153139A1

公开(公告)日：2017-06-01

申请号：US14985183

申请日：2015-12-30

Applicant: Industrial Technology Research Institute

Inventor： Li-Ren Huang ,  Zen-Dar Hsu ,  Cheng-Hsun Lin ,  Huan-Ke Chiu ,  Cihun-Siyong Gong ,  Po-Hsun Tu

IPC: G01F23/26

CPC classification number: G01F23/266 ,  G01F23/268

Abstract: An embodiment of the invention provides a liquid-level sensor to detect liquid-level information of a liquid to be tested in a container. The sensor includes an electrode, a sensing circuit, an amplifier and a controller. The electrode is disposed on the outer surface of the container, comprising a first electrode and a second electrode. The sensing circuit is coupled to a first electrode and a second electrode, and receives a clock signal to generate a first voltage signal and a second voltage signal. The amplifier receives the first voltage signal and the second voltage signal to output an output voltage. The controller acquires liquid-level information of the liquid to be tested according to the output voltage and a voltage-volume table.

公开(公告)号：US10699433B2

公开(公告)日：2020-06-30

申请号：US16199064

申请日：2018-11-23

Applicant: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE

Inventor： Jia-Hao Bai ,  Tzu-Hang Huang ,  Chun-Jen Chen ,  Cheng-Hsun Lin

IPC: G06K9/00 ,  G06T7/62 ,  G06T7/73

Abstract: A liquid level detecting method is provided. Firstly, a receiving component is provided, wherein the receiving component includes a transmissive container for containing a liquid and a marking component located on a rear surface of the transmissive container. Then, a camera captures a receiving component image of the receiving component from a front surface of the transmitting container, wherein the receiving component image includes a transmissive container image and a marking component image. Then, the marker component image is analyzed downward from an end portion to obtain multiple width values of multiple position points of the marker component image. Then, a width difference between each width value and a width average of the marking component image is obtained. Then, a position point whose width difference value is not within a preset range is determined. Then, according to the position point, a liquid level of the liquid is determined.

公开(公告)号：US09983042B2

公开(公告)日：2018-05-29

申请号：US14985183

申请日：2015-12-30

Applicant: Industrial Technology Research Institute

Inventor： Li-Ren Huang ,  Zen-Dar Hsu ,  Cheng-Hsun Lin ,  Huan-Ke Chiu ,  Cihun-Siyong Gong ,  Po-Hsun Tu

IPC: G01F23/26

CPC classification number: G01F23/266 ,  G01F23/268

Abstract: An embodiment of the invention provides a liquid-level sensor to detect liquid-level information of a liquid to be tested in a container. The sensor includes an electrode, a sensing circuit, an amplifier and a controller. The electrode is disposed on the outer surface of the container, comprising a first electrode and a second electrode. The sensing circuit is coupled to a first electrode and a second electrode, and receives a clock signal to generate a first voltage signal and a second voltage signal. The amplifier receives the first voltage signal and the second voltage signal to output an output voltage. The controller acquires liquid-level information of the liquid to be tested according to the output voltage and a voltage-volume table.