基于ATmega128单片机的粮食水分在线测量仪控制系统软件部分设计与研究

发布时间：2018-04-20 00:23

本文选题：谷物水分 + 在线检测　；参考：《合肥工业大学》2012年硕士论文

【摘要】：粮食安全是关系国民生计和社会稳定的重要问题,每年因为气候潮湿,粮食来不及晒干或粮食烘干未达到安全水分造成霉变、发芽等损失的粮食高达5%,折合人民币200亿元。因此,测量粮食水分,保证粮食干燥质量具有十分重大的经济和社会意义。如何快速准确测量谷物水分含量已被人们所关注,并成为一项重要的研究课题。本文提出一种基于555定时器和单片机的谷物水分快速检测技术,阐述了测量仪的工作原理以及组成系统的各个功能模块,包括控制系统硬件部分和软件部分,其中信号调理电路的设计以及各个模块的电路原理图是硬件部分着重阐述的内容,而各个模块的程序流程图以及重要程序注释是软件部分讲述的主要内容。系统采用ATmega128单片机为处理器,LCD128*64为显示设备,以满足粮食烘干机在线检测的需求。该技术的提出为谷物水分快速、高精度检测提供了新的解决方案。本论文研究的粮食水分在线测量仪控制系统,是用Atmel公司的高档AVR单片机ATmega128为核心处理器进行设计、开发与实现。依据单片机系统开发的规范,从系统功能需求分析,首先提出系统硬、软件的总体设计方案,然后依据模块化设计理论,给出控制系统的各个功能模块详细的设计方案,并对所涉及到的电路原理、程序算法和重要程序给出详细说明。控制系统的初始化模块、温度数据采集处理模块、粮食水分数据采集处理模块、显示模块、按键模块、电机控制模块、蜂鸣器模块、通信模块的设计与实现是本文重点内容。
[Abstract]:Food security is an important issue related to the livelihood of the people and social stability. Every year, due to the humid climate, it is too late to dry grain or dry grain without reaching safe moisture, resulting in mildew, germination and other losses of up to 5 yuan, equivalent to RMB 20 billion yuan. Therefore, it is of great economic and social significance to measure grain moisture and ensure grain drying quality. How to measure grain moisture content quickly and accurately has been paid more attention and become an important research topic. In this paper, a rapid detection technique of grain moisture based on 555 timer and single chip microcomputer is presented. The working principle of the measuring instrument and the function modules of the system are described, including the hardware and software parts of the control system. The design of signal conditioning circuit and the circuit schematic diagram of each module are emphasized in the hardware part, and the program flow chart and important program annotation of each module are the main contents of the software part. The system adopts ATmega128 microcontroller as the processor and LCD128P64 as the display device to meet the need of on-line inspection of grain dryer. This technology provides a new solution for rapid and high precision detection of grain moisture. In this paper, the control system of grain moisture on-line measuring instrument is designed, developed and realized with the high grade AVR MCU ATmega128 of Atmel Company as the core processor. According to the specification of the single-chip microcomputer system development and the analysis of the system function requirement, the overall design scheme of the system hardware and software is put forward first, and then, according to the modular design theory, the detailed design scheme of each function module of the control system is given. The circuit principle, program algorithm and important program are explained in detail. The design and implementation of initialization module, temperature data acquisition and processing module, grain moisture data collection and processing module, display module, keystroke module, motor control module, buzzer module and communication module are the key contents of this paper.
【学位授予单位】：合肥工业大学
【学位级别】：硕士
【学位授予年份】：2012
【分类号】：TP274;TP368.1

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