脉冲式动静脉气压治疗仪的研制  

DEVELOPMENT OF PULSE ARTERIOVENOUS BAROMETRIC THERAPEUTIC APPARATUS

作　　者：沈峰[1] 李侠[2] 宫开林 李德胜[1] 

机构地区：[1]安徽科技学院计算机科学与技术系,安徽凤阳233100 [2]安徽电子信息职业技术学院软件学院,安徽蚌埠233000 [3]安徽省蚌埠市科技局,安徽蚌埠233000

出　　处：《计算机应用与软件》2014年第11期241-244,共4页Computer Applications and Software

基　　金：安徽省高校省级自然科学研究项目(KJ2012B053)

摘　　要：针对脉冲式动静脉气压治疗仪低成本和高可靠的设计要求、电路包含电磁阀和气泵等器件导致信号存在尖脉冲干扰和小幅度高频干扰影响压力控制精度等问题,提出以微控制器STC89C58为核心,采用软件模拟I2C总线协议、光电耦合隔离干扰、中值滤波和算术平均滤波算法滤除噪声、PID算法控制压力等软硬件设计技术。软件仿真实验和产品运行结果都表明:仪器成本较低,运行稳定可靠,压力误差可控制在±5 mm Hg(毫米汞柱)范围内。Pulse arteriovenous barometric（ PAB） therapeutic apparatus has design requirements of low cost and high reliability,and its circuit includes the parts of electromagnetic valve and pump that lead to peak pulse and small amplitude high frequency interference existing in its signals and impacting the pressure control precision.Aiming at these problems,we put forward the hardware and software design technology.Microcontroller STC89C58 is used as the core of hardware,and the software simulations are adopted in I2 C bus protocol,photoelectriccoupling for isolating the interference,median filtering and arithmetic average filtering algorithm for filtering out the noises,PID control algorithm for controlling the pressure etc.Both the Software simulation experiment and PAB running results show that the system has low cost,and operates stably and reliably,the precision of pressure error can be controlled within ± 5 mm Hg.

关 键 词：治疗仪 控制系统 压力 滤波算法 PID控制算法 

分 类 号：TP399[自动化与计算机技术—计算机应用技术]