The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 22, 2013
Filed:
Apr. 08, 2010
Peng Du, Shenzhen, CN;
Yueping Chen, Shenzhen, CN;
Yanwen Weng, Shenzhen, CN;
Shenzhen Mindray Bio-Medical Electronics Co., Ltd., Nanshan, Shenzhen, CN;
Abstract
Various embodiments disclose a liquid level detecting device and method, which comprises: a control unit configured to output control instructions corresponding to environmental information according to the environmental information of a location of a sampling needle; an amplifying unit configured to set a gain according to the control instructions; a converting unit configured to receive and convert a capacitance signal from the sampling needle to a voltage signal; the amplifying unit receives the voltage signal and amplifies the voltage signal according to the gain; the control unit receives the amplified voltage signal and compares the amplified voltage signals with a preset voltage threshold to determine whether the sampling needle contacts the liquid level. Some embodiments further disclose a sample application system. Various embodiments consider both sensitivity and reliability of a detection system and is adaptable to various detection environments.