SBIR Phase II: Remote Communication with Embedded Sensors in Composites

* 9710666武器 这个小型企业创新研究第二阶段项目的目的是开发一个小型化，智能，可寻址的传感模块（ASM）网络，可以嵌入在复合结构中，远程供电，并通过非接触式感应链路由个人计算机进行询问。 感应链路用于电力和双向通信。 基于计算机的询问系统将数据请求传输到网络上的特定ASM。 数据请求被编码在AC波形上，该AC波形向嵌入式电子设备输送电力。 一旦完成寻址，嵌入式ASM就为其传感器和数据转换组件供电。 数据被采样并编码为脉冲编码调制数据;这调制了RF载波，用于从材料中传输回询问计算机。 这种多功能系统的设计允许各种传感器可互换地联网。 在第二阶段，将通过开发专门的节点、严格的环境测试、软件改进和工作演示来增强ASMs。 将在复合材料声纳罩的复合材料固化期间和之后收集数据。 该系统将用于模型验证，干船坞检查和降低成本的海上测试。 该技术的成功示范将大大提高市场潜力。 通过嵌入应变、裂纹扩展、加速度、压力、磁场等传感网络，可以开发具有各种能力的结构。应用包括厚复合结构、桥梁、大坝和建筑物的健康监测。 这些系统的军事和商业市场潜力巨大。 ***

*** 9710666 Arms This Small Business Innovation Research Phase II project is aimed at the development of a network of miniaturized, intelligent, addressable sensing modules (ASM's), that can be embedded within a composite structure, remotely powered, and interrogated by a personal computer through a non contacting inductive link. The inductive link is used for power and bi-directional communications. A computer based interrogation system transmits a data request to a specific ASM on the network. The data request is encoded on the AC waveform that delivers power to the embedded electronics. Once addressed, the embedded ASM powers its sensors and data conversion components. Data are sampled and encoded as pulse code modulated data; this modulates an RF carrier for transmission out of the material, back to the interrogating computer. This versatile system was designed to allow a wide variety of sensors to be networked interchangeably. In Phase II, ASMs will be enhanced by the development of specialized nodes, rigorous environmental testing, and software improvements, and working demonstrations. Data will be collected during and after composite cure of a composite sonar dome. The system will be used for model verification, dry dock inspection, and reduced cost at-sea testing. Successful demonstration of the technology will greatly enhance market potential. Structures with a broad variety of capabilities may be developed by embedding sensing networks of strain, crack propagation, acceleration, pressure, magnetic fields, etc. Applications include health monitoring of thick composite structures, bridges, dams, and buildings. Military and commercial market potential for these systems is significant. ***