医用电气设备直流绕组温升测试装置的设计  

Design of DC winding temperature rise test instrument for medical electrical devices

作　　者：刘铮 季升林 田佳 魏杰 吴新宇 张克 LIU Zheng;JI Sheng-lin;TIAN Jia;WEI Jie;WU Xin-yu;ZHANG Ke(Medical Electrical Department,Shandong Institute of Medical Device and Pharmaceutical packaging Inspection,Ji'nan 250101,China)

机构地区：[1]山东省医疗器械和药品包装检验研究院医用电器室,济南250101

出　　处：《医疗卫生装备》2021年第12期33-36,52,共5页Chinese Medical Equipment Journal

基　　金：山东省医疗器械和药品包装检验研究院内部科研项目(ZX202111)。

摘　　要：目的:设计一种医用电气设备直流绕组温升测试装置。方法:该装置硬件主要由多路恒流源模块、信号测量模块、微处理器模块和自动控制与切换模块等组成,软件采用Java语言编写,由Eclipse工具进行开发。该装置根据电阻法测量绕组温升,主要通过微处理器控制直流电动机的运行,然后通过微处理器对各参数进行测量,包括环境温度、冷态电阻、各时间点的热态电阻,并根据相应算法,直接得出绕组温升结果。将该装置测得的直流电动机绕组温升值与热电偶的测量结果进行对比,验证该装置测量的准确性。结果:该装置测得的绕组温升值与热电偶的测量值误差在±1℃以内,符合相关标准要求。结论:该装置能够实现直流电动机绕组温升的自动化测量,可以用于医用电气设备的绕组温升电气安全评价。Objective To design a DC winding temperature rise test instrument for medical electrical devices.Methods The hardware of the DC winding temperature rise test instrument was composed of a multi-channel constant current source module,a signal measurement module,a microprocessor module and an auto control and switching module,and the software was written in Java and developed by Eclipse tools.The instrument tested the winding temperature rise with the resistance method,which used a microprocessor to control the operation of the DC motor and to measure the indexes such as ambient temperature,cold resistance and hot resistance at various points in time,and then derived the winding temperature rise results directly with the appropriate algorithm.The temperature rise of the DC motor winding measured by the instrument was compared with the thermocouple measurements to verify the accuracy of the instrument.Results The winding temperature rise measured by the instrument was within±1℃of the thermocouple measurements and met the requirements of relevant standards.Conclusion The instrument designed enables automated measurement of the temperature rise of the DC motor winding and can be used for electrical safety evaluation of winding temperature rise in medical electrical devices.[Chinese Medical Equipment Journal,2021,42(12):33-36,52]

关 键 词：医用电气设备 直流电动机 绕组温度 电阻法 电气安全 

分 类 号：R318.6[医药卫生—生物医学工程] TH789[医药卫生—基础医学]