摘要
钻石挑选
基于电阻法的肉类水分快速检测装置及其检测方法的研发
自1990年以来，我国的生鲜肉品的消耗总量约占据全世界生鲜肉品消耗总量的1/3。而随着人类生活水平的提高，人类的饮食结构逐渐发生了前所未有的变化，生鲜肉品在中国人民日常饮食中所占比例也越来越大，由此看出，我国未来的生鲜肉品消耗总量将会进一步增长。为此，在生鲜肉品的消耗总量和生产总量的不断增加的同时，生鲜肉品的品质问题也随之频繁出现，而肉类的水分含量则是检验肉类品质的一个重要指标[1]。
由于不同地域、不同品种、宰杀时间不同等因素，使得生鲜肉品中水分的酸碱值有所不同，这直接影响到生鲜肉品内离子数量的多少，导致了通过采集的生鲜肉品的电阻而得出的含水率值各有差异，这是导致含水率测量过程的系统误差之一；而温度对于电阻测量的准确性也有较大的影响，这是导致含水率测量过程中的另一个测量误差。如果对样品的PH值及温度不进行修正，通过电阻法所得到的含水率数值就会产生较大的误差，对于生鲜肉品的存储和运输都有极大的影响。所以进行酸碱、温度等相应参数进行补偿修正，是必不可少的步骤。
励志简笔画
因此，本文设计了一种肉类水分快速检测装置。通过信号发生装置产生特定的频率与幅值的振荡信号，将肉类水分含量的大小转换成电信号进行信号处理，并通过STM32F103进行数据采集、程序控制、数据
处理等设备控制。本文通过设备理论和实际的依据、硬件结构、软件设计、初步的实验和结果数据等几个方面进行论文介绍。由于肉类酸碱度修正目前没有完成，装置未加入酸碱度修正，因此本文只对酸碱度进行理论实验验证。
关键词：
连钱草
含水率检测，电阻法，温度补偿，单片机
Abstract
Rearch and Development of Rapid Detection Device and
Detection Method for Moisture Content of Meat Bad on
Resistance Method
铁锅哪个牌子质量最好
China's total consumption of fresh meat accounts for about one-third of the world's since1990.With the improvement of the living standard of human, the diet structure of human has undergone unprecedented changes,and the proportion of fresh meat in the daily diet of Chine people is also increasing. Therefore,the total consumption of fresh meat in China will further increa in the future.
Therefore,while the total consumption and production of fresh meat are increasing,the quality problems of fresh meat also appear frequently,and the moisture content of meat is an important index to examine the quality of meat.
The acid and alkali values of water in fresh meat are different due to different areas,different varieties,different killing time and other factors,which directly affect the raw meat in ionic quantity,caud that the moisture content of value each have differences by the resistance of the acquisition of fresh meat,and this is one of the effects of moisture content measurement process system error;Temperature also has a great influence on the accuracy of resistance measurement,which is another systematic error in moisture content measurement.If the PH and temperature of the sample are not compensated, the moisture content obtained by the resistance method will produce a rious mistake,which has a great impact for the storage and transportation of fresh meat.Therefore,it is an indispensable step to compensate and correct the corresponding parameters such as PH and temperature.
Therefore,this paper designed a device to detect the moisture content of
fresh meat.The signal generator generates oscillating signals of specific frequency and amplitude,co
nverts the size of meat moisture content into electrical signals for signal processing,and controls data acquisition,program control,data processing and other equipment through MCU.This paper introduces the theory and practice of equipment,hardware structure,software design,preliminary experiment and result data.As the PH correction of meat has not been completed at prent,the equipment has not added the PH correction,so only theoretical experimental verification is carried out.
Key words:
Moisture content detection,MCU,temperature compensation,resistance method
目录
第一章绪论 (1)
1.1肉类水分含量检测的意义 (1)美丽的生命
1.2国内外研究现状 (1)
第二章肉类水分含量检测方法与原理 (3)
第三章系统工作原理及验证 (5)
3.1电阻法工作原理 (5)
3.2原理实验验证 (5)
次密接触第四章系统总体方案研究 (12)
4.1主板设计方案 (12)
4.2测量电极方案 (12)
4.3单片机选取方案 (13)
第五章系统硬件设计 (15)
5.1激励信号发生系统设计 (15)
5.2针状测量电极系统设计 (17)
5.3多路选择系统设计 (18)
5.4A/D转换系统设计 (20)
夏天来了作文
5.5温度采集系统 (21)
5.6电源电路与显示系统设计 (22)
第六章系统软件设计 (25)
6.1主程序设计 (25)
6.2A/D转换数据处理 (27)
第七章装置实验 (30)
7.1装置设计 (30)
7.2装置实验研究与结果分析 (30)
7.2.1装置实验研究 (30)
7.2.2实验结果分析 (32)
7.3实验标定 (32)
7.4温度补偿实验及误差分析 (34)
喝菊花茶的好处7.4.1温度补偿实验 (34)
7.4.2误差分析 (36)
第八章总结与展望 (37)
参考文献 (39)
作者简介 (41)
致谢 (42)
