Improved Auscultation with a Stethoscope Using Model Inversion for Unknown Input Estimation

被引：0

作者：

Nelson, Garrett ^{[1
]}

Rajamani, Rajesh ^{[2
]}

机构：

[1] Sandia Natl Labs, Albuquerque, NM 87111 USA

[2] Univ Minnesota, Dept Mech Engn, 111 Church St SE, Minneapolis, MN 55455 USA

来源：

2016 AMERICAN CONTROL CONFERENCE (ACC) | 2016年

基金：

美国能源部;

关键词：

MULTIVARIABLE LINEAR-SYSTEMS; DYNAMICAL-SYSTEMS; INVERTIBILITY;

D O I：

暂无

中图分类号：

TP [自动化技术、计算机技术];

学科分类号：

0812 ;

摘要：

This paper presents a method for improved auscultation with an electronic stethoscope by estimating and removing the effects of unknown disturbance inputs. By replacing the single transducer in a stethoscope with a dual piezo transducer assembly, it is shown that an inverse dynamic mapping can be used to relate the two measured signals to original directional inputs acting on the stethoscope. Specifically, model inversion is used to estimate and remove physician handling noise from chest sound signals. An experimental test platform which uses a vibration shaker to simulate the desired auscultation signal is used to experimentally demonstrate the feasibility of the dual-piezo stethoscope approach in improving auscultation.

引用

页码：3970 / 3975

页数：6

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