Bioimpedance measurement using controller-switched current injection and multiplexer selected electrode connection

摘要

A system and method for measuring a voltage in a body part are described. The system includes a multiplexing unit, and N body leads for electrically connecting the multiplexing unit to the body part. The system also includes a controller switching unit for allowing a current to flow through the body part between two body leads, n₁ and n₂ of the N body leads, and a resultant voltage to be measured between two body leads, n₃ and n₄ of the N body leads, where n₁<>n₂ and n₃<>n₄, but where n₁ n₂ n₃ and n₄ need not otherwise be distinct.