摘要生物安全柜在操作过程中，为了确保不受污染，保持生物安全柜的进气流和下沉气流的平衡是至关重要的。由于生物安全柜的安全系统主要是负压空气系统，因此需要实时监控进出口风量。60604
根据风量的监测要求和生物安全柜的触屏控制，液晶显示等要求，设计中主要由单片机对风机进行控制，在主控板上也是由单片机进行监控与显示。利用风压传感器测量进出口的过滤器的阻力，并且风机是可以通过单片机反馈风机转速的。
利用汇编语言程序进行程序的编写和调试，实现了带触摸屏LCD的数据显示，能够将得到的风压值显示在LCD上。完成人机交互界面的菜单设计，数据能够输出显示等功能。
毕业论文关键词 生物安全柜 风量 单片机 传感器 触摸屏
毕业设计说明书（论文）外文摘要
Title Monitor Air Volume in Import and Export of Biological Safety Cabinet
Abstract
During operating biological safety cabinet, in order to ensure protection against pollution, preservation of balance of intake flow and downdraft flow balance in biological safety cabinet is essential. Because safety system of biological safety cabinets is mainly negative pressure air system, requiring real-time monitoring amount of wind in import and export.
Monitoring requirements based on the amount of wind and touch-screen controls in biological safety cabinet, LCD and other requirements, the main design of the fan is controlled by the microcontroller, the main control board is also monitored by the microcontroller and display. The use of pressure sensors measure the resistance of filters in the import and export, and the fan is a single-chip feedback via fan speed.
Use of assembly language program writing and debugging programs, implemented LCD with touch screen data display, the ability to get the pressure value is displayed on the LCD. Complete designing menu of interactive interface, data display and other functions can be output.
Keywords Biological Safety Cabinet Airflow SCM Sensor touch panel
目次
1 绪论 1
1.1 本课题的背景和意义 1
1.3 本文的主要工作 3
2 生物安全柜的功能需求与总体方案设计 4
2.1 物安全柜的气流原理 4
2.2 系统的功能需求 5
2.3 系统的总体方案设计 6
3 生物安全柜进出口风量监控的硬件设计 7
3.1 监测装置的硬件设计 7
3.2 进出口风机的选择 10
3.3 风机控制模块 12
3.4 主控制器模块 18
3.5 触屏显示模块 21
3.6 传感器选择 22
4 生物安全柜进出口风量监控的软件设计 23
4.1 生物安全柜的控制 单片机生物安全柜进出口风量的监控:http://www.youerw.com/zidonghua/lunwen_66115.html