中心供氧的计量、计费管理系统

介绍一套集病区氧气流量测量，远程、自动抄表，流量数据处理，自动计费结算，打印报表等功能为一体的系统。该系统采用气体质量流量计作为计量装置，运用PLC（电力线通信）技术实现远程集中抄表，通过后台管理软件实现医用气体分区计量的远程自动抄表、计费管理及数据分析。     

PLC技术对医用气体分区计量、集中管理的应用研究

采用气体质量流量计作为计量装置，运用PLC（电力线通信）技术实现远程集中抄表，通过后台管理软件实现医用气体分区计量的远程自动抄表、计费管理及数据分析。     

医用中心供氧远程抄表管理系统的设计与应用

目的：研发一套可用于计量医院各病区氧气流量的远程自动抄表管理系统。方法：采用气体质量流量计作为计量装置,运用串口通信技术实现远程抄表,通过后台管理软件实现临床科室用氧管理及数据分析。结果：系统实现了远程自动抄表、流量实时监测、管道泄漏或流量计失常报警、打印报表等功能。结论：该系统实现了远程集中周期自动抄表,能够实时流量监测,及时掌握医院用氧动态,判断泄漏情况或流量计失常报警,提高用氧安全性。     

基于物联网的医院供氧系统监控技术研究

目的：研究一套基于物联网的医院供氧监测控制系统。方法：将氧气监测置于临床科室氧气入口处，集信号监测与控制于一体。机电执行机构由氧气减压阀、氧气专用电磁阀组成；传感器组由压力传感器、氧浓度传感器和气体流量传感器组成；设计电路板分别为信号采集与数据处理电路板、通信与主控电路板和氧气专用电磁阀控制驱动电路板。结果：医院中心供氧监控技术，能够在医院供氧控制中心监测各临床科室氧气压力、浓度及流量情况，并在氧气压力、氧气浓度不足时及时报警。病区出现火情时可远程自动或手动控制氧气监测与控制装置关闭病区氧气供应，保证供氧安全，提高供氧管理水平。结论：该监测系统能保证供氧的质量与安全，实现氧气供应的远程监控及报警。     

一种白蚁预防工程自动配药系统的研制

目的 设计一种用于白蚁预防工程的小型自动配药系统.方法 集成配药单元、流量监测单元、计量单元、施药单元及支撑载体等功能模块,设计研发一款自动配药系统.结果 精准度试验表明系统自动配药偏差率,5％联苯菊酯水乳剂为-4％、20％吡虫啉悬浮剂为-6％,实现了施工现场的精准配药,降低了施工人员的劳动强度和中毒风险.结论 该自动...     

医用气体流量计量检定标准装置的研制与不确定度分析

我们在研制医用气体流量测量仪(系列)的基础上,又研制了一套医用气体流量2级计量标准装置。为建立医用氧气及其他气体流量计的计量标准作了一些探索。本文简述了该装置的结构、原理及其不确定度分析。     

经络导引肺功能顺应性自我训练装置的研制

目的 研制一种提高肺功能顺应性、增加血氧饱和度的自我深吸气训练装置.方法 该装置包括流量筒、计量筒、手机架和经络导引音像合成训练软件四部分.流量筒测量吸入气体流量的大小,计量筒计量吸入气体的总量,手机架安放存储有经络导引音像合成训练软件的手机.结果 该装置结构合理、操作灵活,满足训练模块指导下的自我深吸气训练.结论 导...     

利用中心供氧的计量计费管理系统及时发现管道氧气泄漏情况

我院在氧气管道系统上,安装了医学工程科自行研制开发的中心供氧的计量计费管理系统。经过数年运行,效果良好,解决了医院临床科室集中供氧的核算管理问题。我们通过该系统,远程监控各个护理单元氧气使用状况。及时掌握氧气管道工作状况,发现异常及时处理,极大的提高了工作效率和管理水平。氧气管路出现泄漏的部位,绝大多数发生在管道终端的接头上。一般的检查方法有:人耳辨别,肥皂水涂抹,小型氧浓度测量仪检查。人耳辨别的方法简单易行,医护人员就可以直接发现报修,但是精度不高。我们通过中心供氧的计量计费管理系统,进行了相应的测试,发现…     

医用输氧流量积算仪及其应用

输氧是一种常用治疗手段,也是医嘱和处方之一。病员输氧过程的记录、计费由于现有技术手段的限制无法精确计量,计费矛盾也日益突出。另一方面,输氧处方执行这程模糊,也是医院的成本管理和自举证的一个薄弱环节。新型医用输氧流量积算仪正是在这种需求大背景下经过两年多的开发和临床试用而问世的。     

基于远程检测的自动心电图机检定仪的研发与应用评估

目的:设计基于远程检测的自动心电图机检定仪,以提高数字心电图机检定的工作效率。方法:结合数字心电图机检定规程,基于STM32F103芯片设计标准信号发生器、信号测试切换电路和多路切换开关电路。编写自动检测程序,评价其性能测试指标,实现多台数字心电图机的同时检定,连接心电图远程监测系统实现数字心电图机的远程检测、数据分析。结果:自动心电图机检定仪可实现各类标准波形的输出,可与心电图远程检测系统连接并实现多台心电图机的同时检测,提高整体检定工作效率67.2%。结论:设计的基于远程检测的自动心电图机检定仪能够提高数字心电图机检定校准信息化和自动化水平,提高检定工作效率,更好地为医院诊疗提供优质服务。     

高原小型制氧机应用质量专用检测装置的设计与研究

目的：解决现有高原小型制氧机应用质量控制检测手段中使用设备多、不便携带、方法繁杂等困难和问题,研究并制作一种适应高原边防环境需求的检测装置。方法：利用微处理器多任务处理的能力,采用模块化设计方案,设计制作出将氧气体积分数、输出压力、输出流量、环境等多个物理参数统一由主控微控制单元（micro control unit,MCU）集中处理并输出显示的检测仪器。结果：经过设计制作人员和高原部队的实地使用测试,验证了该测试仪达到了体积小、质量轻、操作简便、数据准确的预期目标。结论：该检测装置简化了高原小型制氧机应用质量控制检测的方法和过程,方便了高原部队和检修人员展开工作。     

便携式太阳能制氧机结构设计

目的：设计一种基于太阳能充电的便携式制氧机。方法：根据太阳能电池板的发电原理,通过柔性太阳能电池板将太阳能转化为电能并储存在储能电源中,采用变压吸附制氧工艺设计便携式制氧机。结果：便携式太阳能制氧机主要由制氧主机、太阳能电池板、储能电源及箱体组成．制氧流量为l～3L／min,氧气体积分数为50％一90％．储能电源充电时间约为7h,储能电源容量为40Ah,太阳能电池板输出电压为DCl2V。结论：太阳能充电为便携式制氧机提供了可靠的电源保障,延长了制氧机的使用时间,保证能及时制备应急呼吸用氧气,实现了无外接电源供应时制氧机的正常使用。     

便携式制氧机研制

目的：为急进高原部队提供既满足车载使用又轻便携行的小型制氧装备.方法：通过设计基于锂电池的充供电电路,与系统控制电路高度集成,增强整机的电源适应性,确保可接入市电或车载电源直接使用;采用SolidWorks软件,实现部件模块化设计;配气阀设计及应用,实现出氧模式为氧气直出、空氧配比混合输出双模式.结果：完成便携式制氧机设计,制氧流量为1～3 L/min,氧气体积分数为50％～90％,达到技术指标要求.结论：便携式制氧机具有体积小、质量轻、电源适应性强的优点,适用于急进高原的个体或车辆驾驶员使用,极大地提升了军队急进高原部队的用氧保障能力.     

输氧监测仪的研制

本文针对住院病人吸氧时间由人工记录而产生的弊端，提出了对病人的吸氧自动进行监测与记录的课题，较好地解决了病人开始吸氧和暂停吸氧等状态的数据采集与信号转换的问题，开发研制了成功了输氧监测仪，对病人的吸氧时间可以实时准确记录，经过临床使用100余例，获得了良好效果。     

The cost of breathing: an economic analysis of the patient cost of home oxygen therapy

The oxygen concentrator is a popular means of delivering supplemental oxygen to the home hospice patient. The technology is notable for its reliability, convenience, and ease of use. It is the most cost effective of the various oxygen delivery systems from the institutional standpoint. Cost effectiveness from the patient standpoint has not previously been reported. We present a brief analysis of the cost of operating such a device from the perspective of the patient and suggest possible ways of addressing this cost.     

氧压机压氧过程控制系统

本文介绍一种氧压机压氧过程监控系统。系统以8031单片机为核心,自动切换两个压氧充瓶气路,并利用8031外部中断功能,实时监测膜片破裂和循环水流量。为使系统工作安全可靠,还采取了一系列抗干扰措施。     

Implementation of an oxygen concentrator system in district hospital paediatric wards throughout Malawi

PROBLEM: Hypoxaemia in children with severe or very severe pneumonia is a reliable predictor of mortality, yet oxygen was not available in most paediatric wards in Malawi. APPROACH: The Child Lung Health Programme in Malawi made oxygen available by supplying oxygen concentrators and essential supplies to 22 district and 3 regional hospitals' paediatric wards. Five key steps were taken to introduce concentrators: (1) develop a curriculum and training materials; (2) train staff on use and maintenance; (3) retrain electromedical departments on maintenance and repair; (4) conduct training once concentrators arrived in the country; and (5) distribute concentrators once staff had been trained. LOCAL SETTING: The paediatric wards in 3 regional and 22 government district hospitals and 3 regional electromedical engineering departments in Malawi. RELEVANT CHANGES: Main changes were: (1) provision of a source of oxygen in every paediatric ward in all district hospitals; (2) training of electrical engineering and health personnel in the use, maintenance and repair of oxygen concentrators; and (3) setting-up of high-dependency rooms or areas for severely ill children where oxygen is administered. LESSONS LEARNED: It is feasible to implement an oxygen system using concentrators throughout a low-income country. Oxygen delivery requires trained staff with necessary equipment and supplies. Regular maintenance and supervision are essential to ensure optimal utilization.     

A technique to expose animals to concentrated fine ambient aerosols.

This paper presents the development and evaluation of an ambient particle concentrator for conducting animal inhalation exposure studies. The system utilizes the principle of virtual impactors to concentrate ambient particles in the size range 0.1-2.5 microns (aerodynamic diameter; dp) by drawing them through a series of three virtual impactors. Each impactor contains the majority of ambient fine mass (dp < 2.5 microns aerodynamic diameter) in a bleed flow (minor flow) that is 20% of the total flow entering the virtual impactor. The virtual impactors have been characterized using indoor air samples as test aerosols. Fine mass and sulfate concentrations at the outlet of the concentrating system were compared to the ambient fine mass and sulfate levels, which were determined using Harvard-Marple impactors. In each of the stages, particle concentration was increased by a factor of approximately 3. Thus, an overall concentration factor of about 25-30 was achieved. The main goal of this study was to demonstrate the feasibility of conducting animal exposures using the newly developed ambient fine particle concentrator.     

集中供氧监测计量系统的研制

一种用于大中型医院集中供氧设备的监测计量系统。它由一台中心监测机和若干个终端监测机组成，通过专线、市话网或计算机局域网将中心监测机和若干个终端监测机联结成一个检测系统，检测医院各个科室氧气流量和管道压力等参数。便于医院管理和保障用氧安全。     

Multicellular model for contaminant dispersion and ventilation effectiveness with application for oxygen deficiency in a confined space

Multicellular models were developed to predict contaminant dispersion in a three-dimensional (3-D) space. The method utilized in this study was patterned after models which have been developed for water pollution in lakes and streams. This approach involved (1) design of cell structures to accommodate the geometry and mass flow characteristics of the 3-D space and (2) approximation of dispersion coefficients to describe contaminant transport in addition to that resulting from mass flow between cells. The dispersion model utilized a mass balance equation to predict contaminant dispersion as a function of time. The computer model was evaluated against experimental data for oxygen deficiency inside a ventilated confined space (CS) model. Eight test cases of ventilation design for the CS model were tested for each of three contaminant release (nitrogen to cause oxygen deficiency) characteristics: (1) purging (oxygen recovery from an initial deficiency); (2) steady state; and (3) variable rate. The dispersion model did a reasonably good job of predicting oxygen concentrations for different locations (cells) in the CS model. The primary limitations of this multicellular method are associated with experimental approximations of flow patterns and dispersion coefficients.