文档介绍：摘要
本文介绍了原棉水分测定仪的工作原理及硬件电路设计。根据电阻式棉花水分测定仪原理,03新型单片机设计了一种棉花水分测定仪。此芯片片内采用闪烁存储(Flash memory)制造技术,无须外加EEPROM,并有内置ADC模数转换器;功耗低、可加密、低价格、支持两种可选的省电模式-休眠模式和掉电模式。该仪器用半导体温度传感器实现了半自动测试、温度自动补偿,具有自动换档功能,语音报警功能,显示采用点阵式液晶片,能显示所测棉花回潮率及相关的提示汉字;棉花压紧机构的运动位置由霍尔传感器自动判断,测量结果的温度补偿由单片机的计算功能实现。具有测试快捷、数据稳定准确、使用方便等特点。
关键词:棉花回潮率;单片机;水分测定仪;自动温度补偿;液晶显示
ABSTRACT
Introducing the raw cotton humidity measures the work principle and the hardware telephone designs of the instrument. According to the resistance method cotton humidity test principle, made use of a machine of 03 to design a kind of cotton humidity measurement instrument The adoption scintillation storage( the Flash memory) manufacturing technique inside this chip slab, need not the in addition EEPROM, also inside place the ADC mold few transducer ; The consume low, can encrypt, the low price space, support two kinds of provinces of eligibility electricity mode-dormancy mode and drop to give or get an electric shock the mode . That instrument spread the feeling machine to carry out the semiautomatic test, the temperature auto with the temperature of semiconductor offset, have the au to shift gear the function, the speech reports to the police the function, display adoption dot a type LCD slab, can display the cot ton measure to return to the tide rate and related Chinese characters of prompts ; The press tightly the sport location of the instrument to be spread the automatic judgment of the feeling machine by the pressure pickup , measuring the pensation of result to be carry out by puting function of a machine. Have the test fast, the data stabilization is accurate, usage convenience etc. characteristics.
Keywords: cotton moisture content; puter; the humidity measurement instrument; auto pensation; The LCD manifestation
目录
摘要 I
目录 III
第一章绪论 1
课题来源 1
课题研究的目的和意义 2
国内外现状 2
论文的主要内容 4
第二章课题简介及设计要求 5
课题简介 5
设计要求 6
总体要求 6
性能指标 7
本章小结 7
第三章仪器硬件设计 8
总体方案设计 8
方案设计 8
单片