摘要
针对目前市场上噪声监测仪表电路设计复杂、调试困难、功耗大等缺点,设计了一种全数字个体噪声暴露保护装置。该装置采用脉冲密度调制(PDM)接口的MEMS数字麦克风采集噪声,以数字运算替代模拟电路,降低了电路设计的难度。该装置由MEMS数字麦克风、数据处理模块、数据存储模块、数据发送模块和报警LED五部分组成。与传统噪声监测仪表相比,该装置电路设计简单、调试简单、体积小、功耗低,为噪声监测仪表的设计提供了一种新思路。
For the problem that noise monitoring instruments on the market have the disadvantages of complicated circuit design, difficult debugging, and large power consumption, an all-digital individual noise exposure protection device is designed. The device uses a MEMS digital microphone with a pulse density modulation（PDM） interface to collect noise and replaces analog circuits with digital operations, reducing the difficulty of circuit design. The device consists of five parts： MEMS digital microphone, data processing module, data storage module, data transmission module and alarm LED. Compared with traditional noise monitoring instruments, the device has a simple circuit design, simple debugging, small size, low power consumption, and provides a new idea for the design of noise monitoring instruments.
作者
蔡启祥
宋章明
陈大洋
贺慧勇
Cai Qixiang;Song Zhangming;Chen Dayang;He Huiyong(School of Physics and Electronic Science, Changsha University of Science and Technology,Changsha Hunan, 410114)
出处
《电子测试》
2018年第7期14-16,共3页
Electronic Test
