| 驻极体声传感器信号采集系统研究 |
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| 引用本文： | 曹一江,孙志斌,刘晓为,尹亮. 驻极体声传感器信号采集系统研究[J]. 传感器与微系统, 2006, 25(10): 19-21 |
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| 作者姓名： | 曹一江 孙志斌 刘晓为 尹亮 |
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| 作者单位： | 1. 哈尔滨理工大学,应用科学学院,黑龙江,哈尔滨,150080
2. 哈尔滨工业大学MEMS中心,黑龙江,哈尔滨,150001 |
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| 摘 要： | 介绍了驻极体式声传感器的基本性质和工作原理,采用目前国际上流行的超低功耗MSP430F149单片机作为微控制器,设计了一种超低功耗、便携式的驻极体式声传感器信号采集电路系统,对采集的声音信号进行了声音复现,并应用通信数据显示软件对声音复现波形进行了分析,复现的声音具有很好的保真性。该声音采集系统具有很好的可扩展性,对于不同变量,传感器信号的采集与处理具有一定的互换性和通用性。实验结果表明:系统休眠时平均功耗约为3.73 mW;写FLASH操作时功耗为137.25mW,满足了系统的低功耗要求。
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| 关 键 词： | 驻极体 声传感器 信号采集 |
| 文章编号： | 1000-9787（2006）10-0019-03 |
| 收稿时间： | 2006-08-18 |
| 修稿时间： | 2006-08-18 |
The research of the electret acoustic sensor signal acquisition system |
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| CAO Yi-jiang,SUN Zhi-bin,LIU Xiao-wei,YIN Liang. The research of the electret acoustic sensor signal acquisition system[J]. Transducer and Microsystem Technology, 2006, 25(10): 19-21 |
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| Authors: | CAO Yi-jiang SUN Zhi-bin LIU Xiao-wei YIN Liang |
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| Affiliation: | 1. College of Applied Science, Harbin University of Science and Technology, Harbin 150080, China; 2. MEMS Center, Harbin Institute of Technology, Harbin 150001, China |
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| Abstract: | The basic properties and principle of electret acoustic sensor are introduced.A super-low power consumed system MSP430F149 SCM which is popular in the world today is used as micro-controller,and a super-low power consumed and portable system of electret acoustic sensor signals collection is designed.The collected samples of acoustic signals can be returned to the fomer sound,and the wavefarm returned is analyzed by using the communication data displaying software.The sound collection system has good expansibility.For different variables,collecting and disposing of the sensor signals can be exchanged.The result of experiment indicates,the average power when the system is not operated is 3.73 mW;the power when FLASH is writed is 137.25 mW,meeting the need of the system's low power. |
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| Keywords: | electret acoustic sensor signal sampling |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
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