摘要
目的:设计一种操作简单、高性价比的液氧罐液位及压力监控系统,以实现液氧罐液位和压力的实时监测及自动报警功能。方法:该系统以STC89C52单片机作为控制核心,分为主机和从机,硬件主要由液氧液位测量模块、氧气压力测量模块、无线传输模块、系统报警模块组成。其中,液氧液位测量模块主要由CYJ-3型电子远传差压计和I/V转换电路组成;氧气压力测量模块采用LST-131型压力变送器;无线传输模块采用ANT-E31-T50S2芯片;系统报警模块主要由蜂鸣器和全球移动通信系统组成。软件采用C语言编程、Keil软件编译。对该系统的数据传输功能、数据精度和模拟报警功能进行测试,以验证该系统的性能。结果:实验表明,该系统能发送数据并实时显示,可实现数据传输功能;数据精度合格,准确率≥95%;短信漏发率≤5%,能实现较好的预警功能。结论:该系统能够满足液氧罐液位及压力监控要求,可为中心供氧系统的稳定运行提供保障。
Objective To design an easy-to-operate and cost-effective liquid oxygen tank level and pressure monitoring system to achieve real-time monitoring and automatic alarm for liquid oxygen level and oxygen pressure.Methods A liquid oxygen tank level and pressure monitoring system was developed with a STC89C52 microcontroller as the core control unit and the components of a master machine and a slave machine.The hardware part of the system was composed of a liquid oxygen level detection module,an oxygen pressure measurement module,a wireless transmission module and an alarm module.The liquid oxygen level detection module consisted of a CYJ-3 electronic differential pressure gauge and an I/V conversion circuit;the oxygen pressure measurement module involved in a LST-131 pressure transmitter;the wireless transmission module adopted an ANT-E31-T50S2 chip;the alarm module was made up of a buzzer and the GSM.The software of the system was programmed with C language and compiled by Keil software.The system had its performance verified by testing its functions for data transmission,data accuracy and analog alarm.Results The experiments proved the system developed gained advanta-ges in data transmission and real-time display;the system had the data accuracy not lower than 95%;the system behaved well in analog alarm with the rate of missed SMS not higher than 5%.Conclusion The system developed can be used for liquid oxygen level and pressure monitoring,and provides support for the stable operation of the central oxygen supply system.
作者
殷旭
陈冠军
YIN Xu;CHEN Guan-jun(Department of Clinical Medical Engineering,Jiangsu Province Official Hospital,Nanjing 210024,China)
出处
《医疗卫生装备》
2025年第3期27-34,共8页
Chinese Medical Equipment Journal
关键词
液氧罐
液位监控
压力监控
液氧
liquid oxygen tank
liquid level monitoring
pressure monitoring
liquid oxygen
作者简介
殷旭(1989-),男,硕士,主管技师,主要从事临床医学工程方面的研究工作,E-mail:857217429@qq.com;通信作者:陈冠军,E-mail:1451660910@qq.com。
