本科学位论文-数字式医用输液状态光电检测及点滴速度监控装置设计.doc

摘 要 输液装置是医疗器械中一种被广泛使用且非常重要的一次性消耗器材，在传统的输液过程中，通常是由人工设置输液点滴的速度，也是依靠人工来监测输液瓶中液位高度等输液的状态。这种人工的方式既费时费工，也存在着非常大的安全隐患，因而设计一种数字式医用输液状态光电检测及点滴速度监控装置就有着非常迫切的现实意义。 就数字式医用输液状态光电检测及点滴速度监控装置的问题而言，整个装置通过采用 AT89S52单片机主控模块，行列按键及对射式光电传感器的输入模块，以及控制储液瓶移动的步进电机驱动单元和LCD显示单元及光电报警单元一同构成的输出模块，三个模块相结合的方案。采取硬件设计与软件设计及模拟仿真的方法。硬件电路设计采用对射式光电传感器红外检测采集液滴数据，以及检测储液瓶内剩余液量并报警。通过键盘输入控制设置点滴速度，步进式电动机控制吊瓶移动改变点滴滴速，单片机驱动电机控制药液的滴速滴注，由 LCD显示检测滴速值。软件系统设计主要包括单片机主控程序、点滴速度测量程序、电机控制程序、LCD显示程序、报警程序以及输入键盘程序几大部分的设计。在模拟仿真方面，运用Proteus 和 Keil 软件进行了软件仿真设计，更具科学性可将理论运用于医疗实际,将更有助于临床的实际应用。 关键词：点滴监控；光电传感器；AT89S52单片机；步进电机 ABSTRACT With the development and application of information technology and microelectronics technology, in medical and health field a concomitant information revolution is underway. In medical and health field, according to the needs of the infusion flow control, this paper presents a kind of control device based on single-chip technology of liquid dropping speed monitoring scheme. The device is mainly in order to overcome the manual monitoring liquid level and liquid flow, the consumption of energy is too large, the efficiency is too low, the disadvantages, the device in theory and practical application has important value, and to the field of medical health is more important. On problems of digital medical transfusion status of photoelectric detection and drop speed monitoring device, through the use of its core is AT89C51 microcontroller, is based on the input composition and the reflective photoelectric sensor in the matrix keyboard keys system. The output is in intelligent control bottle moving stepper motor, LED digital tube and bee sound alarm circuit composed of. Take the hardware design and the software design and simulation, is used in hardware circuit of infrared reflective photoelectric sensor detection collecting droplet data, and detection of the liquid storage bottle residual liquid and alarm. Through the keyboard input control set of dropping speed, step motor control the bottle