在物联网框架中用于结构健康监测的低成本,低功耗边缘计算系统
Eduardo Hidalgo-Fort1, Pedro Blanco-Carmona1, Fernando Muñoz-Chavero1
1Department of Electronic Engineering, University of Seville, 41092 Seville, Spain.
Sensors (Basel, Switzerland)
|August 10, 2024
概括
桥梁结构健康监测的低功耗无线系统可提供超过10年的自主性. 这种具有成本效益的解决方案使用NB-IoT网络的最小传输精确分析结构数据.
科学领域:
- 工程 工程师 工程师 工程师
- 计算机科学 计算机科学
- 土木工程 土木工程是指土木工程.
背景情况:
- 结构健康监测 (SHM) 对基础设施安全至关重要.
- 现有的SHM系统经常面临电力消耗,成本和数据传输方面的挑战.
- 物联网 (IoT) 范式为分布式监控提供了新的可能性.
研究的目的:
- 为桥梁结构健康监测提供一个完整的低功耗,低成本和无线解决方案.
- 开发一个具有扩展自主性的系统,用于长期基础设施评估.
- 通过商业解决方案验证系统的性能和准确性.
主要方法:
- 开发具有低功耗的模块化监控节点 (CoreBoard和SensorBoard).
- 实施FreeRTOS并行执行资源管理和数据减少的任务.
- 使用随机递减技术 (RDT) 通过窄带物联网 (NB-IoT) 网络进行高效的数据传输.
- 在实验室结构和实体桥上进行能源消耗表征和现场部署.
主要成果:
- 实现了超过10年的系统自主性,每日监控频率.
- 与商业系统相比,模态分析频率的准确性很高,错误率低于1.72%.
- 通过实验室和现实世界的桥梁环境中部署的成功验证.
结论:
- 提出的系统代表了桥梁SHM的新,最先进的解决方案.
- 其长时间的自主性,低成本和集成能力使其适合当前的物联网范式.
- 该系统能够有效和可靠地对桥梁和其他基础设施进行结构健康评估.
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