SBIR Phase I: Wireless Accelerometer Network and Integration with Point Clouds for 3D Stability Monitoring

这个小型企业创新研究(SBIR)第一阶段项目将创建一种基于无线加速度计和地形点云集成的岩石和土壤监测技术。无线加速度计可以部署在露天矿、高速公路和包括大坝和桥梁基础在内的其他关键领域。在该系统的一些用途中，如矿山、采石场和高速公路沿线，爆破和高速公路交通的常规振动将被用来对加速计发出声音，确定共振频率，并预测何时发生不稳定的地面条件。在该系统的其他用途中，可以手动测量加速度计，以预测大坝和桥梁基础附近的关键结构的稳定性。将开发点云处理软件作为加速度计数据的可视化和分析工具，并将传感器点云与传统的地形点云相结合，开发新的不稳定性预测方法。具体的研究活动包括在露天矿和州际公路上进行现场加速度计监测和激光雷达扫描，处理振动数据以确定震源特性和地面频率，修改点云软件以接受传感器点云，并开发根据共振频率预测不稳定地面运动的程序。该项目的更广泛影响/商业潜力与提高安全性有关，既涉及工人(采矿、公路、铁路、大坝等)的安全，也涉及受到公路和铁路斜坡以及桥梁和大坝地基不稳定岩石和土壤结构影响的普通公众的安全。通过密切监测爆破引起的震动，可以减少对岩土结构以及建筑物和其他结构的破坏。这增加了安全性，也降低了加固斜坡和建筑物的成本。通过使用廉价的加速度计，这项技术将允许对可能不稳定的公路和铁路斜坡进行大范围的监测。尽管这项建议的重点是岩土结构的稳定性，但它未来可能会在更广泛的领域得到应用，包括建筑物和桥梁等民用结构的稳定性，以及对建筑和制造现场的监控。拟议的监测系统将收集有关岩石和土壤共振频率及其相关不稳定性的有价值的信息，这些信息将引起公司和大学的兴趣。通过持续监测潜在的不稳定岩石和土壤暴露，将收集到一个有用信息的大型数据库。

This Small Business Innovation Research (SBIR) Phase I project will create a rock and soil monitoring technology based on the integration of wireless accelerometers and topographic point clouds. The wireless accelerometers could be deployed in open-pit mines, highways, and other critical areas including dam and bridge foundations. In some uses of the system, such as mines and quarries and along highways, routine vibrations from blasting and highway traffic would be used to sound the accelerometers, determine resonance frequencies, and predict when unstable ground conditions are occurring. In other uses of the system, the accelerometers could be sounded manually to predict the stability of critical structures near dam and bridge foundations. Point cloud processing software will be developed to serve as the key visualization and analysis tool for the accelerometer data, and by integrating sensor point clouds with traditional topographic point clouds, new instability prediction methods will be developed. Specific research activities include field accelerometer monitoring and LIDAR scanning in an open-pit mine and an interstate highway, processing vibration data to determine source properties and ground frequencies, modifying point cloud software to accept sensor point clouds, and developing procedures for predicting unstable ground movement from resonance frequencies.The broader impact/commercial potential of this project are related to increased safety, both the safety of workers (mining, highway, rail, dam, etc.), and the safety of the general public that are impacted by unstable rock and soil structures along highway and rail slopes and bridge and dam foundations. By closely monitoring the vibrations due to blasting, the damage to rock and soil structures as well as buildings and other structures can be reduced. This increases safety and also reduces the cost of stabilizing slopes and buildings. By utilizing inexpensive accelerometers, this technology would allow long stretches of potentially unstable highway and rail slopes to be monitored. Even though this proposal is focused on the stability of rock and soil structures, it could have future applications in much broader fields including the stability of civil structures such as buildings and bridges, and the monitoring of construction and manufacturing sites. The proposed monitoring system would collect valuable information on rock and soil resonance frequencies and associated instability that would be of interest to companies and universities. By continually monitoring potentially unstable rock and soil exposures, a large database of useful information would be collected.