医用电气设备听觉报警信号特征检测方法研究

Research on the Detection Methodology for Audible Alarming Signals of Medical Electrical Equipment

目的探讨医用电气设备听觉报警信号特征的检测方法。方法采用噪声频谱分析仪配合高带宽泰克数字示波器与B&K耳声分析系统配合声音分析仪两种测试平台,对多参数监护仪进行听觉报警信号检测。结果在相同环境条件下,两种测试平台所得结果差别不大;相较于普通实验室,两种测试平台在消音室均得到更准确的测试结果。结论对于听觉报警信号特征的检测在消声室中干扰较少,检测结果更为准确。

Objective To explore the detection methodology for audible alarming signals of medical electrical equipment. Methods Two testing platforms were adopted to detect the audible alarming signals of the multi-parameter monitor, including the combination of the noise spectrum analyzer and high bandwidth Tektronix digital oscilloscope as well as the combination of the ear acoustic analysis system and the voice signal analyzer. Results Noobvious differences were seen between the testing results on two platforms under the same environmental conditions. In contrast with the common laboratory, application of the two platforms inthe anechoic chamber could achieve more accurate testing results. Conclusion Detection of the features of audible alarming signals in the anechoic chamber had less interference and could obtain more accurate testing results.