摘要
Abstract
Objective To design an automatic monitor for patient urine output based on volume measurement with high accuracy,stability and convenience.Methods The patient urine output automatic monitor was designed by means of divide and conquer,which was composed of a micro-controller control module,an urine segmentation module,a liquid level detection module,an electromagnetic valve drive module,a data display module,a transmission module,a storage module and a power management module.The micro-controller control module consisted of a STM32F103C8T6 SCM and its peripheral circuits,which manipulated the working process of all the peripheral modules and urine volume calculation;the urine segmentation module consisted of two solenoid valves,two level detection electrodes and a liquid collection tube,which functioned to divide the urine into several portions with fixed volumes;the liquid level detecttion module was made up of two resistors and a capacitor,which was to determine the urine filling status in the liquid collection tube;a DRV8870 full-bridge driver chip was involved in the electromagnetic valve.Results The monitor developed realized accurate and automatic urine output monito-ring,with the influences of the changing factors eliminated such as urine density and urine bag's position.Conclusion The monitor developed gains advantages in convenience,accuracy,stability and reliability,and is thus worthy promoting pra-ctically to facilitate physicians to determine patient conditions and adjust treatment plans accordingly.[Chinese Medical Equipment Journal,2024,45(6):33-37]关键词
尿量自动监测/尿量监测装置/体积测量Key words
auto monitoring of urine output/urine output monitor/volume measurement分类
医药卫生
