Zhou Qianwei*, Li Baoqing, Liu Huawei, Chen Shengyong, Huang Jingchang, A Microphone based Vibration Sensor for UGS Applications, IEEE Transactions on Industrial Electronics, 2017/02/22 Accept,影响因子6.383
This paper appears in: IEEE Transactions on Industrial Electronics
Issue Date: <not found>
Volume: <not found> Issue: <not found>
On page(s): 1-8
Print ISSN: 0278-0046
Online ISSN: 1557-9948
Digital Object Identifier: 10.1109/TIE.2017.2682015
全文可到如下地址查阅：
https://www.researchgate.net/publication/314230910_A_Microphone_based_Vibration_Sensor_for_UGS_Applications
中文版： 链接: https://pan.baidu.com/s/1c1UGem0 密码: niw8
英文版： 链接: https://pan.baidu.com/s/1i4Tkdxj 密码: kyit
摘要：
To be an ideal candidate seismic sensor for wireless Unattended Ground Sensor (UGS) applications, it should be light weight, low noise, high sensitivity and energy efficiency. Typically, to cover regions far from source, the best choice will be the coil-over-magnet geophone. Because it is usually heavier than batteries, a lighter one should replace it to further cut the weight of sensor nodes. However, currently availableseismic sensors, such as Micro-Electro Mechanical Systems (MEMS) accelerometers and Molecular-electronic transducers, cannot do the job since they usually consume too much energy to achieve low noise level as well as high sensitivity.This work has designed and tested a new kind of vibration sensor, the vibration-to-sound geophone, which can convert seismic waves into sound physically and then detected by an MEMS microphone. By using a battery as itsproof mass, the vibration-to-sound geophone: (1) has better sensibility than the coil-over-magnet geophone from 20 Hzto 500 Hz and is about 58 times more sensitive at 70 Hz which is morethan 60 dBV/m; (2) is very light, half the weight of the coil one; (3)consumes no more than 726 uW which is more energy-efficient than MEMS accelerometers and Molecular-electronic transducers.
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下面是该传感器的专利说明书中的部分内容
本发明涉及一种震动传感器，其解决了以往低频震动检波器体积大，重量重，或者MEMS加速度计对低频信号接收能力差等技术难题，较好的解决了传感器体积、重量与低频信号接收能力之间的矛盾，且整体造价低廉，结构简单，具有较强的竞争优势，其包括一个密闭空腔，所述空腔侧面由轻质刚性较好的材料制作而成，空腔上面由弹性较好的膜片材料构成，该膜片材料上连接有配重质量体，所述配重质量体体积可大可小，可以通过支架间接连接到膜片上，以达到控制接触面积的目的，所述密闭空腔底面由传声器及其可能的印刷电路板密封，所述传声器指向密闭空腔内部，所述密闭空腔可以配以外壳，用于防尘、防水、防污提高震动传感器的可靠性，帮助配重质量体保持姿态方便其振动提高震动传感器的灵敏度等用途。
下面是专利说明书的百度网盘链接