Sensors: Self-Contained Intelligent Sensors for Structural Monitoring

这项工作的基本目标是研究一种主动传感系统，包括损坏检测固件、遥测和功率收集能力，以产生独立的主动无线传感器技术。此外，它建议推广这个样本设备，以产生一个分析程序，以定义必要的物理特性，这样的传感系统（如传感器类型，数量，灵敏度，带宽，功率）一般结构健康监测和损伤预测（SHM/DP）的问题。 在执行这项研究的任务是：（1）确定物理限制和参数的环境振动能量的功率收集的措施，如频率内容，振幅，传感器的几何形状，配置和位置。(2)根据梯度、最低和最高温度等测量值，确定环境温度功率采集的物理限制和参数。(3)确定控制传输信息、计算和激励结构的能量极限的关键参数，已知输入与特定SHM/DP算法相关。(4)确定计算功耗的关键参数，如模数转换和算法要求。(5)实验证明所提出的独立传感系统。这是一个由传感器倡议NSF 04-522支持的项目。

Abstract0426777Dan InmanVirginia TechThe basic objective of this effort is to research an active sensing system, including damage detection firmware, telemetry and a power harvesting ability to produce a stand alone, active wireless sensor technology. In addition it is proposed to generalize this sample device to produce an analytical procedure to define the requisite physical properties of such a sensing system (e.g. sensor type, number, sensitivity, bandwidth, power) for general structural health monitoring and damage prognosis (SHM/DP) problems. The tasks in performing this research are: (1) Determine the physical limits and parameters for power harvesting of ambient vibration energy in terms of measures such as frequency content, amplitude, transducer geometry, configuration and placement. (2) Determine the physical limits and parameters for power harvesting of ambient temperature in terms of measures such as gradient, minimum and maximum temperature. (3) Determine the key parameters governing the energy limits for transmitting information, for computing, and for exciting the structure with a known input as related to a specific SHM/DP algorithm. (4) Determine the key parameters for power consumption for computing such as analog digital conversions and algorithm requirements. (5) Experimentally demonstrate the proposed self-contained sensing system.This is a project supported under the Sensors Initiative NSF 04-522.