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：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.