SBIR PHASE I: Remote Communication with Embedded Sensors in Composites

SBIR 第一阶段：与复合材料中的嵌入式传感器进行远程通信

• 批准号: 9561648
• 负责人: Steven Arms
• 金额: $ 7.5万
• 依托单位: MICROSTRAIN INC
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1996
• 资助国家: 美国
• 起止时间: 1996-03-01 至 1996-09-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9561648&HistoricalAwards=false
• 关键词: SBIR; PHASE; Remote; Communication; Embedded

This Small Business Innovation Research Phase I 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 power link is also used for bi-directional communications. A computer based interrogation system will transmit a data request to a specific ASM on the embedded network. This data request will be encoded by frequency shift keying the AC waveform that delivers power to embedded electronics. Once addressed, the embedded ASM will power up its strain sensing elements, and data conversion components. The strain data will be sampled and encoded as pulse code modulated (PCM) data. The PCM serial data then modulates an RF carrier for transmission out of the embedded material, back to the interrogating computer. The system will be designed to allow a variety of sensing devices to be used interchangeably on the network, this will allow smart structures sensing means to be tailored for a specific application. Development of the system will be accompanied by thorough testing along the way to insure target specifications will be met. Structures with a broad variety of capabilities may be developed by embedding intelligent sensing networks of temperature, strain, crack propagation, pressure, magnetic fields, etc. Applications include health monitoring of thick composite structures, bridges, dams, and buildings. Military and commercial potential for these systems is significant.

这个小型企业创新研究第一阶段项目旨在开发一个微型、智能、可寻址传感模块（ASM）网络，该网络可以嵌入到复合结构中，远程供电，并由个人计算机通过非接触式感应链路进行查询。感应电源链路也用于双向通信。基于计算机的询问系统将数据请求发送到嵌入式网络上的特定ASM。该数据请求将通过频移键控向嵌入式电子设备供电的交流波形进行编码。一旦寻址，嵌入式ASM将启动其应变传感元件和数据转换组件。应变数据将被采样并编码为脉冲编码调制（PCM）数据。PCM串行数据然后调制射频载波，以便从嵌入的材料中传输回查询计算机。该系统将被设计成允许各种传感设备在网络上互换使用，这将允许为特定应用量身定制智能结构传感手段。该系统的开发将伴随着彻底的测试，以确保达到目标规格。通过嵌入温度、应变、裂纹扩展、压力、磁场等智能传感网络，可以开发出具有多种功能的结构。应用包括厚复合结构、桥梁、水坝和建筑物的健康监测。这些系统的军事和商业潜力是巨大的。