基于单片机金属探测系统设计.doc

基于单片机的金属探测系统设计 摘 要 在烟草、塑料、食品、制药、水泥、造纸、纺织、木材加工等很多行业中,经常会由于在物料中混有金属而导致设备损坏,产品质量下降,严重影响了正常生产,使得厂家和广大消费者都蒙受损失。针对以上问题，本系统设计提出了金属探测、坐标定位、坐标数据存储与显示等解决方案，为后续的金属剔除设备提供了数据支持。 本系统设计基于把500*500mm的未知区域区虚拟均匀分割成250000个1*1mm的坐标格，用以确定金属的位置坐标，实现了高精度金属坐标定位（坐标误差小于±1mm）。本设计以MSP430F149单片机为系统控制核心，以轴承导轨作为系统金属检测框架系统，以TS3384N8三相24V步进电机作为金属检测动力系统及坐标采集系统，并配以金属检测电路、信号调理电路、声光报警电路、液晶显示电路等外设电路，实现了对未知区域的进行全自主、高精度的金属检测。 本设计实现了以轴承导轨载体平台、全自主无死角探测、高精度坐标定位显示及坐标存储、智能声光报警等功能。全自主高速检测系统提高了工作效率，为以后扩展安装在工业自动化流水线上奠定了基础。 关键字：金属探测；巡回扫描；坐标显示；金属定位 Design Of Intelligent Metal Detecting System Based On MCU Abstract 窗体顶端 In tobacco, plastics, food, pharmaceutical, cement, paper, textile, wood processing and many other industries, because the materials are mixed with metal, the machines are damaged, which lead to lower-quality product. The normal production is seriously affected, and manufacturers and consumers suffer losses.To solve these problems, the metal detector, coordinate position, and other coordinate data storage and display are proposed,which provide data support for the subsequent metal removing device. The system design is based on the 500 * 500mm unknown even regional area which is divided into 250 000 of the grid which is1*1mm. It realizes high precision metal coordinate positioning (coordinates error is less than ± 1mm). The design use MSP430F149 microcontroller as the core,bearing guide rail as metal detector frame, TS3384N8 24V three-phase stepper motor as the metal detection power system and coordinate collection system. The SCM combines with metal detector, signal conditioning circuits, alarm of sound light circuit, LCD circuit and other peripheral circuits,which realizes precision metal detection for an unknown region. The design realizes fully autonomous detection without dead ends, high-precision positioning, displaying,storing the coordinates, intelligent sound and light alarming which is based on bearing guide rai.It improves the efficiency through fully autonomous high-speed detection system