作者：桂桂, 姚小兵, 鄂治群, 张海锭, 万宇鹏, 谢荣基
作者单位：中国测试技术研究院, 四川 成都 610021
关键词：电容传声器;温度特性;有限元;环境实验
摘要：
针对温度变化引起传声器性能改变，导致噪声测量结果出现误差的问题。该文在研究现有性能评价方法和户外传声器结构的基础上，讨论温度对传声器膜片张力的影响因素，然后对电容传声器膜片进行热应变有限元分析，并选用3只不同传声器进行温度环境实验，得出在实验温度范围-20~50℃内，传声器灵敏度和频响随温度变化的特性曲线。实验表明：有限元结果与环境实验结果相结合，对户外传声器的设计制造和使用具有一定的理论指导意义。
Research on the temperature characteristics of microphone of noise monitoring system
GUI Gui, YAO Xiaobing, E Zhiqun, ZHANG Haiding, WAN Yupeng, XIE Rongji
National Institute of Measurement and Testing Technology, Chengdu 610021, China
Abstract: Aiming at the problem of the temperature variation has a great influence on the performance of the microphone which may lead to deviation of noise measurement results,on the basis of the research on the existing performance evaluation methods and structure of outdoor microphone,the analysis of microphone diaphragm tension influence factors and thermal strain finite element analysis for condenser microphone diaphragm were carried out in this paper.After that the temperature environment test of three different microphones was carried out,the characteristic curves of microphone sensitivity and frequency response were obtained with temperature range of-20-50℃.The test shows that finite element results are in conformity with environmental test results and have certain theoretical guidance significance for design,manufacture and application of outdoor microphone.
Keywords: condenser microphone;temperature characteristic;finite element;environmental experiment
2017, 43(10): 123-126 收稿日期: 2017-05-15;收到修改稿日期: 2017-06-24
基金项目: 四川省科技支撑计划（2013GZ0010）
作者简介: 桂桂(1989-),男,河南洛阳市人,助理工程师,硕士,研究方向为声学测试技术与仪器。
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