The flexible strain sensor is a fast-moving technology and has been used in many fields. The array design and application based on flexible strain sensors have been the current research hotspots. However, there are few reports on research of acoustic positioning using the flexible sensor array. Herein, we designed and realized the consistent fabrication of a thin-film, acoustic sensor array. The acoustic sensing research of the sensor was demonstrated as well. We used a convenient fabrication method to design a flexible acoustic sensor using silver nanowires coated on a thin polydimethylsiloxane (PDMS) film with mass block–beam structure. The acoustic sensor can record sound within a frequency domain of 20–2000 Hz and volume detection range of 83–108 dB. The sensor's resonance frequency is 380 Hz, horizontal distance sound detection limit is 5 cm, and vertical detection limit is 3.5 cm. We also achieved 360° azimuth detection in two-dimensional space with a detection accuracy of 15°. In three-dimensional space, the flexible acoustic sensor array was designed with two flexible acoustic sensors to detect the position of the sound source. This research first proposes the use of flexible acoustic sensors to test the sound source orientation.

中文翻译：

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基于聚二甲基硅氧烷-银纳米线的具有质量块梁结构的柔性声学定位传感器

柔性应变传感器是一项快速发展的技术，已在许多领域得到应用。基于柔性应变传感器的阵列设计与应用一直是当前的研究热点。然而，使用柔性传感器阵列进行声学定位研究的报道很少。在这里，我们设计并实现了薄膜声学传感器阵列的一致制造。还展示了传感器的声学传感研究。我们使用一种方便的制造方法设计了一种柔性声学传感器，该传感器使用涂在具有质量块束结构的聚二甲基硅氧烷 (PDMS) 薄膜上的银纳米线。声学传感器可以在 20-2000 Hz 的频域和 83-108 dB 的音量检测范围内记录声音。传感器的谐振频率为 380 Hz，水平距离声音检测限为5厘米，垂直检测限为3.5厘米。我们还在二维空间中实现了360°方位角检测，检测精度为15°。在三维空间中，设计了柔性声学传感器阵列，通过两个柔性声学传感器来检测声源的位置。本研究首先提出使用柔性声学传感器来测试声源方向。