公开(公告)号：KR1020130117914A

公开(公告)日：2013-10-29

申请号：KR1020120040363

申请日：2012-04-18

Applicant: 전북대학교산학협력단

Inventor： 이종수

IPC: G06F17/10

CPC classification number: G06F17/10

Abstract: PURPOSE: A data fitting method using modified Levenberg-Marquardt algorithm is provided to perform fast optimization calculation by using a norm value of an error function instead of a variable constant used to a gradient value and a hessian value in the previous Marquardt algorithm. CONSTITUTION: A nonlinear least square optimization method according to an equation 1 is used. The nonlinear least square optimization method according to the equation 1 is applied. A Jacobian value is obtained by partial differentiation of an error function (fi(x)) of the equation 1 as to a parameter. A gradient value is obtained by partial differentiation of a function (F(x)) of the equation 1 as to the parameter. A hessian value is obtained by partial differentiation of the gradient value as to the parameter again. The amount of change of the parameter is calculated according to modified Levenberg-Marquardt algorithm of an equation 2.

Abstract translation: 目的：提供一种使用修正的Levenberg-Marquardt算法的数据拟合方法，通过使用误差函数的范数值代替前一个Marquardt算法中梯度值和粗体值的变量常数进行快速优化计算。 构成：使用根据等式1的非线性最小二乘优化方法。 应用等式1的非线性最小二乘优化方法。 雅可比值是通过等式1的误差函数（fi（x））对参数的偏微分而获得的。 通过对参数的等式1的函数（F（x））的部分微分获得梯度值。 通过再次对参数的梯度值进行部分微分来获得粗糙值。 参数的变化量根据等式2的修正Levenberg-Marquardt算法计算。

公开(公告)号：KR1020100094042A

公开(公告)日：2010-08-26

申请号：KR1020090013272

申请日：2009-02-18

Applicant: 전북대학교산학협력단

Inventor： 임재중 ,  송상섭 ,  위연 ,  이성 ,  이종수

IPC: A61B7/04

Abstract: PURPOSE: An electronic stethoscope apparatus for wireless sound-transmission using a separable auscultating unit are provided to obtain quantative information related to heart-sound or lung-sound using a contact type microphone composed of a piezoelectric film. CONSTITUTION: A contact type microphone(110) detects heart-sound and lung-sound. A circuit unit(125) performs an analog and digital process with respect to the detected sound signal. A battery(135) supplies power. A speaker(130) outputs the processed sound signal which is obtained from the circuit unit. A connecting terminal(140) is connected with a main tube.

Abstract translation: 目的：提供一种使用分离式听诊单元进行无线声音传输的电子听诊器装置，以使用由压电薄膜构成的接触型麦克风来获得与心音或肺声相关的量化信息。 构成：接触式麦克风（110）检测心音和肺声。 电路单元（125）相对于检测到的声音信号执行模拟和数字处理。 电池（135）供电。 扬声器（130）输出从电路单元获得的已处理声音信号。 连接端子（140）与主管连接。