轴承加热器控制界面设计

论文编号:DQ070    论文字数:12319,页数:30

摘  要
 轴承加热器主要用于对轴承、齿轮、衬套、轴套、直径环、滑轮、收缩环、连接器等多种类型的金属件进行加热，轴承加热器通过加热使之膨胀，达到过盈装配的需要。我们通常采用的是感应式轴承加热器。此种加热方式温度易于控制，所能加热的轴承型号范围广。此轴承加热器需要有一个温度控制器对其加热温度进行控制，控制界面在整个温度控制过程中占有十分重要的地位。本文设计的控制界面系统是以PIC 16F877为控制核心与温度检测系统、信号放大系统、A/D 转换、I/O 设备等相设备结合组成一个温度控制系统,此温度控制系统主要是用来对轴承加热器的轴承加热温度进行检测，通过键盘预设加热温度，通过数码管对加热温度进行显示，以及通过LED显示加热状态等功能。

关键词： 轴承加热器；人机界面；键盘技术；LED

Abstract
 Heater of bearings mainly used in bearing , gears, bushings, bushings, diameter, pulley, shrinkage, connectors, etc. Various types of metal heat, bearing heater by heating of inflation, achieve a assembly needs. We usually use is inductive bearing heater. This heating temperature easy control, can the bearing type heat range. This bearing heater needs a temperature controller for the heating temperature controlling, control interface in the whole process of temperature control is an important position. This design control interface system is 16F877 PIC as control core and temperature testing system, amplification system, A/D conversion, I/O devices composed A combination of equipment, the temperature control system of the temperature control system is mainly used for bearing heater bearing heating temperature testing, through the keyboard by default heating temperature, temperature of heating tube digital display, and displayed by LED heating condition etc. Function.

Keywords: bearing heater, Human-machine interface, Keyboard technology, LED

目 录
摘要…………………………………………………………………………….….…..П
Abstract……………………………………………………………………….….………Ш
1 前言……………………………………………………………………………………………1
2 总体设计方案……………………………………………………………………………….2
2.1 系统总体结构及指标要求……………………………………………………………..2
2.2 系统程序框图…………………………………………………………………………..3
3  PIC系统硬件及功能概况……………………………………………………………….4
   3.1 PIC16F877原理简介……………………………………………………………………4
   3.2 PIC16F877RAM配置及功能……………………………………………………………..4
   3.3 PIC16F877RAM特殊内嵌功能…………………………………………………………..5
   3.4 PIC16F877输入输出接口…..…………………………………………………………..6
 3.4.1 端口A和TRISA寄存器..………………………………….…………………..6
 3.4.2端口B和TRISB寄存器………………………………….…………………..7
 3.4.3端口C和TRISC寄存器………………………………….…………………..7
 3.4.4端口D和TRISD寄存器………………………………….…………………..8
 3.5 存储器分类…………………………………………………………9
4  模数(A／D)转换器..11
 4.1 A／D转换的基本原理…..………………………………………………………….11
 4.2 A/D转换器的主要技术指标………………………………………………………..12
 4.2.1 分辨率…..…………………………………………………………..12
 4.2.2 精度…..…………………………………………………………12
 4.2.3 转换时间..…………………………………………………………..12
 4.2.4 电源灵敏度……………………………………………………….12
 4.2.5 量程…..…………………………………………………………12
 4.2.6 输出逻辑电平…….………………………………………………13
 4.2.7 工作温度范围…..……………….………………………………..13
 4.4 A/D转换器..………………………………………………….……….13
        4.3.1 A/D转换器模块……………..………………………….13
 4.3.2 A／D转换器采集要求………..…………………….14
 4.3.3 选择A／D转换器时钟………..………………………..14
 4.3.4 配置模拟输入端口………..………………….…..15
 4.3.5 A／D转换………..……………………15
 4.3.6 在睡眠期间A／D操作………..….…….…..16
5  显示器接口技术…..….….17
 5.1 LED显示器…………………………………………………….17
 5.2 LED显示方式………………………………………….17
      5.2.1 静态显示………………..…….…….………………………17
      5.2.2 动态显示………………..…….…….………………………18
 5.3 LCD显示器………………………………………….18
 5.4设计中使用的显示接口技术………………………….19
6  总结…..….…..20
致谢…..….…21
参考文献….…..22
附录1 系统原理图..23
附录2 A/D转换温度显示系统程序25