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首页> 外文期刊>Bioinspiration & biomimetics >A model for μ-biomimetic thermal infrared sensors based on the infrared receptors of Melanophila acuminata
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A model for μ-biomimetic thermal infrared sensors based on the infrared receptors of Melanophila acuminata

机译：一个基于拟黑斑病菌红外受体的仿生热红外传感器模型

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摘要

Beetles of the genus Melanophila acuminata detect forest fires from distances as far as 130 km with infrared-sensing organs. Inspired by this extremely sensitive biological device, we are developing an IR sensor that operates at ambient temperature using MEMS technology. The sensor consists of two liquid-filled chambers that are connected by a micro-fluidic system. Absorption of IR radiation by one of these chambers leads to heating and expansion of a liquid. The increasing pressure deflects a membrane covered by one electrode of a plate capacitor. The micro-fluidic system and the second chamber represent a fluidic low-pass filter, preventing slow, but large pressure changes. However, the strong frequency dependence of the filter demands a precise characterization of its properties. Here, we present a theoretical model that describes the frequency-dependent response of the sensor based on material properties and geometrical dimensions. Our model is divided into four distinct parts that address different aspects of the sensor. The model describes the frequency-dependent behaviour of the fluidic filter and a thermal low-pass filter as well as saturation effects at low frequencies. This model allows the calculation of optimal design parameters, and thereby provides the foundation for the development of such a sensor.
机译：Melanophila acuminata属的甲虫利用红外感应器官在远至130 km的距离处探测到森林大火。受这种极其敏感的生物设备的启发，我们正在开发一种使用MEMS技术在环境温度下运行的红外传感器。该传感器由两个充满液体的腔室组成，这些腔室通过微流体系统连接。这些腔室之一吸收IR辐射会导致液体加热和膨胀。增大的压力使被平板电容器的一个电极覆盖的膜偏转。微流体系统和第二腔室代表一个流体低通过滤器，可防止缓慢但较大的压力变化。然而，滤波器对频率的强烈依赖性要求对其特性进行精确表征。在这里，我们介绍了一个理论模型，该模型描述了基于材料属性和几何尺寸的传感器的频率相关响应。我们的模型分为四个不同的部分，分别针对传感器的不同方面。该模型描述了流体滤波器和热低通滤波器的频率相关行为以及低频下的饱和效应。该模型可以计算最佳设计参数，从而为开发这种传感器提供基础。

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