超声法皮下脂肪厚度测量系统的研究

发布时间：2018-02-16 02:12

本文关键词： 皮下脂肪厚度测量脉冲回波数据处理　出处：《河北工业大学》2015年硕士论文　论文类型：学位论文

【摘要】：随着经济发展和人们生活水平不断提高,国内肥胖人群数量逐年增加,人民群众身心健康受到威胁,生活质量下降。超声脉冲回波法具有原理简单、硬件制作成本低、回波信号易处理等优点。为使人们更加客观而且方便的了解自身的胖瘦状态,通过测量皮下脂肪厚度间接得到人体体脂率十分重要。本论文采用超声脉冲回波测量原理,确定了基于超声波的皮下脂肪厚度测量系统的总体方案,进行了硬件电路和软件程序设计及相关实验,对人体特定部位皮下脂肪厚度进行了测量和分析。论文的主要研究工作如下:1、分析超声法测量皮下脂肪厚度的基本原理,研究了人体浅表软组织的生物学特性和超声波在浅表软组织中的传播特性,采用超声脉冲回波法作为该超声波皮下脂肪厚度测量系统的基本测量方法。2、设计完成系统硬件电路,硬件电路部分主要由超声脉冲发射模块、回波信号接收预处理模块、回波处理控制显示模块和超声探头四个部分组成。3、开发相应的软件,软件部分选用了基于C语言的ICCAVR编程工具作为开发平台。系统程序由主函数文件、函数声明文件和液晶显示函数文件三个源文件组成,采用筛选和切尾均值等算法对结果进行运算处理并显示。4、设计相关实验,利用上述超声测量系统对超声仿体脂肪模型标准试块、离体猪皮下脂肪组织样本和人体上臂部皮下脂肪三种被测样本进行测量,并将测量结果与标准数值或通过其他方式得到的测量数据进行比对,分析结果表明本论文设计的超声测量装置的测量结果达到了预期性能指标,该系统的稳定性和精确度达到了较高水平。
[Abstract]:With the development of economy and the improvement of people's living standard, the number of obese people in China is increasing year by year, the physical and mental health of the people is threatened, and the quality of life is declining. The ultrasonic pulse echo method has simple principle and low cost of hardware fabrication. The echo signal is easy to process. In order to make people understand their fat state more objectively and conveniently, it is very important to obtain body fat rate indirectly by measuring the thickness of subcutaneous fat. The overall scheme of the subcutaneous fat thickness measurement system based on ultrasonic wave is determined, and the hardware circuit, software program design and related experiments are carried out. The measurement and analysis of subcutaneous fat thickness in specific parts of human body are made. The main research work of this paper is as follows: 1. The basic principle of ultrasonic measurement of subcutaneous fat thickness is analyzed. The biological characteristics of human superficial soft tissue and the propagation characteristics of ultrasonic wave in superficial soft tissue were studied. The ultrasonic pulse echo method was used as the basic measuring method of the ultrasonic subcutaneous fat thickness measurement system. The hardware circuit of the system was designed and completed. The hardware circuit is mainly composed of four parts: ultrasonic pulse transmitting module, echo signal receiving preprocessing module, echo processing control display module and ultrasonic probe. The corresponding software is developed. In the software part, ICCAVR programming tool based on C language is selected as the development platform. The system program consists of three source files: main function file, function declaration file and liquid crystal display function file. The algorithm of screening and trailing mean was used to calculate and display the result. The experiment was designed, and the ultrasonic body fat model standard sample was tested by the ultrasonic measurement system mentioned above. Three kinds of subcutaneous adipose tissue samples of pig and human upper arm subcutaneous fat were measured, and the results were compared with standard values or measured data obtained by other means. The analysis results show that the ultrasonic measurement device designed in this paper achieves the expected performance index, and the stability and accuracy of the system reach a higher level.
【学位授予单位】：河北工业大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：R445.1;R589.2

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