车辆用皮革生产线自动控制系统设计

车辆用皮革生产线自动控制系统设计摘要本文主要介绍了一种用于皮革生产中的滚简温度计算机控制系统。本系统对四个辊子的表面温度进行了精确的控制，并对其进行了温度控制，达到了+3℃。以MCS-51单片机为核心，实现了对温度的自动调节。该系统以AT89C51为主控芯片，以EPROM27128、RAM6264扩展卡为主控芯片，并以此为核心设计了一套完整的程序内存、数据内存。时钟电路，复位电路，外部器件(AD590,AD574,DAC0832,LED)等构成了一个实用的硬件电路。该系统以PID算法为核心，在软件方面进行了设计。在前向通道中，采用了传感器和模数变换器两种方式，选择了AD590作为传感器，通过AD574将传感器信号变换为模数变换器，并将信号传递到上位机。滚子温度的控制是由一个数模转换部件和一个执行器部件组成。在该装置中，DAC0832起到变流器的作用，而螺线管起到执行器的作用，通过对进入的蒸气量进行控制，达到对辊温进行控制的目的。在该系统中，以74LS164晶片及LED数字管为主要显示部件，由4个数字管组成，第1个数字显示通路编号，第2个数字显示所选择通路的温度。另外，选择了一个矩阵键盘来设置温度，调整参数。本系统具有高稳定性，高响应速度，高精度，简洁、直观的显示界面。利用单片机进行控制，可提高系统运行的稳定、可靠度，是一种很有前途的新技术。关键词：单片机温度传感器AWD转换ABSTRACTThis article mainly introduces a drum temperature computer control system forleather production.The system precisely controls the surface temperature of the four rollersand controls them to +3C.With MCS-51 microcontroller as the core,the temperature isautomatically adjusted.The system uses AT89C51 as the main control chip,EPROM27128 and RAM 6264expansion card as the main control chip,and designs a complete set of program memoryand data memory as the core.The clock circuit,reset circuit,external components (AD590,AD574,DAC0832,LED),etc.form a practical hardware circuit.The system is designedwith the PID algorithm as the core and the software aspect.In the forward channel,thesensor and analog-to-digital converter are adopted,and the AD590 is selected as the sensor,and the sensor signal is converted into an analog-to-digital converter through the AD574,and the signal is transmitted to the host computer.The control of roller temperatureconsists of a digital-to-analog conversion component and an actuator component.In thisdevice,DAC0832 acts as a converter,while the solenoid acts as an actuator to control theroll temperature by controlling the amount of vapor entered.In this system,the 74LS164chip and LED digital tube are the main display components,which are composed of 4digital tubes,the first number displays the channel number,and the second numberdisplays the temperature of the selected path.In addition,a matrix keyboard was selectedto set the temperature and adjust the parameters.This system has high stability,high response speed,high precision,concise andintuitive display interface.The use of single-chip microcomputer for control can improvethe stability and reliability of system operation,which is a promising new technologyKeywords:Single-Chip ComputerTemperature SensorA/D Transformation目录摘要IABSTRACT…1绪论…11.1课题研究背景及意义1.2国内外研究现状.21.2.1国外研究现状…21.2.2国内研究现状….21.3本课题设计任务及要求.32系统方案确定…42.1系统硬件控制方案.42.2系统控制算法的确定2.2.1数字PID算法.52.2.2PID参数的整定….62.2.3采样周期T的确定.73系统前/后向通道设计83.1前向通道的设计….83.1.1传感器的选择..83.1.2AD转换器的选择与接口电路.113.2后向通道的设计….163.2.1D/A转换器的选择..163.2.2DAC0832与AT89C51的接口电路174单片机控制系统硬件设计….194.1单片机的选择.….194.1.1AT89C51芯片介绍.194.1.2AT89C51引脚说明.…204.2单片机外围电路设计214.2.1时钟电路设计…214.2.2复位电路设计…224.3地址译码器的选择.244.4存储器扩展….244.4.1数据存储器扩展244.4.2程序存储器扩展25