Department of Cybernetics and Biomedical Engineering, VSB-Technical University of Ostrava, 17. listopadu 2172/15, 70800 Ostrava, Czech Republic.
Sensors (Basel). 2020 Apr 29;20(9):2512. doi: 10.3390/s20092512.
A large number of rock formations in the Czech Republic and abroad directly threaten to damage objects or traffic along the roads located beneath these formations. For this reason, many such rock formations are stabilized using protective fences or dynamic barriers. There are several special sensors available on the market. However, there is no comprehensive monitoring system, including remote threshold settings, data processing, and alarm conditions. This statement is supported by extensive research in this area as well as information from major geotechnical companies that are interested in such a system and want to include it in their portfolio. The aim of the article is to describe the unique wireless monitoring system used to measure the geotechnical quantities we have developed. The design and implementation of systems used to measure protective fence states with accelerometers and slope shift with load anchor cells are presented. Wireless accelerometric sensors and load anchor cell sensors are proposed for both systems. To transfer data from the accelerometer sensor to a superior system, IQRF technology is applied for the communication between the wireless nodes and the network coordinator under the IQMESH topology. The article includes a detailed description of the development of the accelerometric wireless sensor node and load anchor cell wireless sensor node. Three case studies are also discussed. The first case study focuses on the data implementation and assessment at a testing polygon at the village of Málkov. The second case study describes the data implementation and an assessment of the measuring system under operating conditions in Zbraslav, a municipality near Prague. The third case study describes the implementation and assessment of data from load anchor cell wireless nodes installed in realistic conditions on a supporting gabion wall next to a road. All communication between the sensors and with the IQMESH network coordinator and database was executed wirelessly. The data were archived in a MySQL database and it provides a data source for the assessment and visualizations using the Grafana SW system.
大量位于捷克共和国和国外的岩层直接威胁到位于这些岩层下方的道路上的物体或交通。出于这个原因，许多这样的岩层使用防护围栏或动力屏障来稳定。市场上有几种特殊的传感器。但是，没有包括远程阈值设置、数据处理和报警条件在内的综合监测系统。这一说法得到了该领域的广泛研究以及对该系统感兴趣并希望将其纳入其产品组合的主要岩土工程公司的信息的支持。本文的目的是描述我们开发的用于测量岩土工程数量的独特无线监测系统。介绍了使用加速度计测量防护围栏状态和使用荷载锚索单元测量边坡位移的系统的设计和实现。提出了用于这两个系统的无线加速度计传感器和荷载锚索单元传感器。为了将数据从加速度计传感器传输到高级系统，我们应用 IQRF 技术在 IQMESH 拓扑下实现无线节点和网络协调器之间的通信。本文包括对加速度计无线传感器节点和荷载锚索单元无线传感器节点的开发的详细描述。还讨论了三个案例研究。第一个案例研究侧重于在 Málkov 村的测试多边形中的数据实现和评估。第二个案例研究描述了在布拉格附近的 Zbraslav 市的操作条件下测量系统的数据实现和评估。第三个案例研究描述了在紧邻道路的支撑格宾墙中安装的荷载锚索单元无线节点的数据实现和评估。传感器与 IQMESH 网络协调器和数据库之间的所有通信都是通过无线方式执行的。数据被归档在 MySQL 数据库中，并为使用 Grafana SW 系统进行评估和可视化提供了数据源。
