【作者】 李翔；

【导师】 王兴松；

【作者基本信息】 东南大学 ， 机械电子工程， 2016， 硕士

【摘要】 随着人民生活水平的提高,饮食结构的不合理以及环境污染等因素,慢性肾衰竭患者的比例日益增多。透析机作为人体肾脏的辅助支持设备,需求也也越来越大。而当前国内市场的透析机多为国外品牌所垄断,成本高、费用昂贵,透析机的国产化已经成为了众多患者的迫切希望。为此,本课题针对透析机的测量和控制系统进行了相关的研究工作。首先,在进行市场调研的基础上,充分了解了血液透析机的组成和原理,并针对各机型的优缺点,设计了本透析机的水路系统和体外循环系统。根据透析机的参数要求,设计了相关部件,并完成了水路系统的搭建。其次,设计了透析机的传感器监测系统。详细地分析了各个传感器的原理,设计了相应的电路控制板,并模拟实际使用条件进行了标定实验。另外,设计了透析机的控制系统。提出了一种模块化的设计思路,将整个系统功能分为六个功能模块,各功能模块控制板之间与主控制板之间使用can通信协议实现数据的共享。同时,基于透析机的工作需求,设计了人机界面程序、主控制板调度程序和各模块系统子程序,并对各个模块的内部控制系统及算法进行了详细的介绍。最后,搭建了透析机的样机平台,按照行业标准的要求,进行了流量、压力、温度、浓度等相关实验。综上,本文设计了透析机的水路系统、传感器监测系统；开发了一套人机交互界面和控制系统的调度程序；搭建了透析机的硬件系统与样机实验平台,并进行了相关的实验研究与分析。更多还原

【Abstract】 Due to the improved living standard, unhealthy dietary structure and environment pollution, more people suffer from chronic renal failure. Nowadays, there is a higher demand of hemodialysis machine, the support device for kidney. Foreign expensive brands of hemodialysis machine are currently dominant in domestic market. Patients are hoping that machine can be designed and manufactured domestically. For this reason, a study on the measurement and control system of hemodialysis machine is carried out in this paper.Firstly, the principle and component of hemodialysis machine are investigated through a market survey. Based on the pros and cons of the existing brands, the fluid system and blood circulation system are designed for the new machine. Relative components are researched and the whole system is constructed according to the requirements for a hemodialysis machine.The sensor monitoring system is also designed. The principle of each sensor is studied detailedly, after that the corresponding digital control boards are manufactured and calibration tests are carried out by simulating the parameters used in actuality.Furthermore, a new control system is proposed using a module-oriented design pattern-the whole system is segmented into 6 functional subsystems. The subsystems communicate with other control board through can protocols. Meanwhile, a friendly user interface, a scheduling program for the control system as well as the program for each module are finished on the basis of usage requirements of hemodialysis machine.Lastly, the sample machine is set up according to the industry standard. Experiments are carried out to study critical parameters including flow, pressure, temperature and density.In conclusion, the paper designed the fluid system and sensor monitoring system for hemodialysis machine. A set of user interface and scheduling programs for the control system are developed. The hardware system as well as the experiment platform of the sample machine are constructed followed by relative experiments and analysis.更多还原