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1、更多相关文档资源请访http:/ 本毕业论文包含完整CAD设计文件以及仿真建模文件，资料请联系68661508索要 毕业设计(论文)题 目 基于单片机自动控制的蒸汽灭菌器 学院名称 机械工程学院 2013年5月28日基于单片机自动控制的蒸汽灭菌器设计摘要：脉动真空灭菌器的主体为一带有夹套及密封门的高压容器，配有真空泵、真空阀等控制器件及温度、压力、水位传感器。该系统以PIC16F877单片机为控制核心模块；采用下排气式脉动预真空技术；用真空泵三次抽取气体以获得真空加快预热过程，通过电加热获得饱和蒸汽以形成高压饱和热蒸汽灭菌介质；分别采用Pt100热电阻温度传感器、集成微芯压力传感器MPX220
2、0DP、自动水位传感器对温度、压力和水位信号进行采集处理；采用固态整流器SSS-40 DA以弱电流驱动系统而节省能源；在人机交流方面采用中文液晶显示并通过独立键盘进行用户设置；为提高控制精度，系统采用了FUZZY-PID混合模糊控制算法对温度进行非线性控制；通过以上途径最终实现了高温高压蒸汽灭菌。本系统功能齐全，实现了灭菌器工作过程自动化，温度控制精度可达1，压力浮动范围保持在3kpa，在保证灭菌效果的前提下缩短了工作周期，人机交流方便、界面友好。关键词：蒸汽；灭菌器；单片机；自动控制Automatic controlbased on single chipdesign ofthe steam
3、sterilizerAbstract：Pulsating vacuum sterilizer for the main jacket with a closed door and a high-pressure containers, equipped with vacuum pumps, vacuum valve control device and the temperature, pressure and water level sensors.This system takes PIC16F877 monolithic integrated circuit as control cor
4、e module; uses under-exhausts pulsation initial vacuum technology; obtains the vacuum with the vacuum pump three extraction gas to speed up the preheating process, obtains the saturated steam through the electric heating to form the high pressure saturated hot steam sterilizing medium; uses the Pt10
5、0 thermal resistance temperature sensor separately, integrates micro core pressure transmitter MPX2200DP, the self-made water level sensor to the temperature, the pressure and the water level signal carries on gathering processing; uses solid state rectifier SSS-40 DA to save the energy by the weak-
6、current actuation system; uses Chinese liquid crystal display in the man-machine exchange aspect and carries on the user establishment through the independent keyboard; In order to enhance the control precision system to use FUZZY-PID to mix the fuzzy control algorithm to carry on the non-linear con
7、trol to the temperature; Finally realized the high temperature high pressure steam through above way to be antiseptic.This system function was complete, it can realizes the sterilizer work process by itself, the temperature control precision has been reach 1 degree; the pressure fluctuation scope in
8、 3kpa, it reduces the sterilization time, has good look and operate easily.keywords: sterilizer；steamy；chip microprocessor；automatic control 目录引言11、杀菌简介21.1、基本概念21.2、消毒灭菌方法31.3、影响消毒灭菌的因素52、压力蒸汽灭菌器72.1、国内外研究现状72.2、脉动式真空高压蒸汽灭菌器工作原理、特点和结构82.3、操作流程92.4、注意事项102.5、几款灭菌器113、灭菌器机械设计133.1、相关参数和要求133.2、灭菌器缸体的
9、设计133.3、封盖螺栓的选型计算及结果153.4、螺栓载荷的计算163.5、活结螺栓选型173.6、椭圆封头设计计算183.7、法兰连接的选择193.8、筒壁开口补强203.9、保温层的厚度计算213.10、真空泵的选型214、系统的电子控制部分设计244.1、系统的控制，显示与驱动244.2、控制系统硬件结构244.3、压力、水位、温度信号的采集与处理254.4、电源、运算放大器、触发器等的选择284.5、键盘输入系统设计314.6、LCD显示器输出系统设计344.7、系统程序设计和FUZZY-PID算法37参考文献40中英文翻译41Aging and Life Management Sy
10、stem of Reactor Pressure Vessel41中文译文53反应堆压力容器的老化和生命体系53谢 词64基于单片机自动控制的蒸汽灭菌器设计摘要：脉动真空灭菌器的主体为一带有夹套及密封门的高压容器，配有真空泵、真空阀等控制器件及温度、压力、水位传感器。该系统以PIC16F877单片机为控制核心模块；采用下排气式脉动预真空技术；用真空泵三次抽取气体以获得真空加快预热过程，通过电加热获得饱和蒸汽以形成高压饱和热蒸汽灭菌介质；分别采用Pt100热电阻温度传感器、集成微芯压力传感器MPX2200DP、自动水位传感器对温度、压力和水位信号进行采集处理；采用固态整流器SSS-40 DA以弱
11、电流驱动系统而节省能源；在人机交流方面采用中文液晶显示并通过独立键盘进行用户设置；为提高控制精度，系统采用了FUZZY-PID混合模糊控制算法对温度进行非线性控制；通过以上途径最终实现了高温高压蒸汽灭菌。本系统功能齐全，实现了灭菌器工作过程自动化，温度控制精度可达1，压力浮动范围保持在3kpa，在保证灭菌效果的前提下缩短了工作周期，人机交流方便、界面友好。关键词：蒸汽；灭菌器；单片机；自动控制Automatic controlbased on single chipdesign ofthe steamsterilizerAbstract：Pulsating vacuum sterilizer
12、for the main jacket with a closed door and a high-pressure containers, equipped with vacuum pumps, vacuum valve control device and the temperature, pressure and water level sensors.This system takes PIC16F877 monolithic integrated circuit as control core module; uses under-exhausts pulsation initial
13、 vacuum technology; obtains the vacuum with the vacuum pump three extraction gas to speed up the preheating process, obtains the saturated steam through the electric heating to form the high pressure saturated hot steam sterilizing medium; uses the Pt100 thermal resistance temperature sensor separat
14、ely, integrates micro core pressure transmitter MPX2200DP, the self-made water level sensor to the temperature, the pressure and the water level signal carries on gathering processing; uses solid state rectifier SSS-40 DA to save the energy by the weak-current actuation system; uses Chinese liquid c
15、rystal display in the man-machine exchange aspect and carries on the user establishment through the independent keyboard; In order to enhance the control precision system to use FUZZY-PID to mix the fuzzy control algorithm to carry on the non-linear control to the temperature; Finally realized the high temperature high pressure steam through above way to be antiseptic.This system function was complete, it can realizes the sterilizer work process by itself, the temperature control precision has been reach 1 degree; the pressure fluctuation scope
