The time-varying Lorentz force causes ions vibrate in the medium, which can be detected by a sensitive acoustic sensor non-invasively. 变化的洛仑兹力使媒质中的离子发生振动,这个振动可由外部的声传感器灵敏而无创地检测到。
Is it possible that an acoustic sensor which size is only 10 cm can form a narrow directivity with a constantbeam of 20 degree? 尺度仅为10cm的声传感器能在数赫兹到数千赫兹的低频宽带范围内形成束宽为20余度的恒定束宽窄指向性吗?
Passive acoustic DoA(Direction-of-Arrival)estimate using acoustic sensor array is a kind of key technology in intelligent mine system. 被动声定位是智能地雷的关键技术之一,其中声传感器阵列测向确定了目标的方位角信息。
A new type of optical fiber underwater acoustic sensor (hydrophone) constructed with two fiber Bragg gratings (FBG) with signal self-demodulation function is presented. 提出了一种新型的光纤布拉格光栅(FBG)水声传感探头结构以及光纤光栅传感信号的自解调方法。
The built system could pick up sound signals within effective time by acoustic sensor and the MFCC characteristic parameter was chosen as observation sequence. 论文阐述了通过软件方式根据声音信号识别阀门泄漏的方法。
Using the pressure-frequency characteristic, the GaAs cantilever acoustic sensor based on RTD is designed and processed by the control hole technology firstly, and the process integration of RTD and micro-mechanical technology is implemented. 利用此压力-频率转换特性