CEIT-Basque Research and Technology Alliance (BRTA), Manuel Lardizabal 15, 20018 Donostia-San Sebastián, Spain.
Department of Electronics and Communications, Universidad de Navarra, Tecnun, Manuel Lardizabal 13, 20018 Donostia-San Sebastián, Spain.
Sensors (Basel). 2022 Nov 3;22(21):8451. doi: 10.3390/s22218451.
The conventional way of studying corrosion in marine environments is by installing corrosion coupons. Instead, this paper presents an experimental field study using an unattended corrosion sensor developed on the basis of ultrasound (US) technology to assess the thickness loss caused by general atmospheric corrosion on land close to the sea (coastal region). The system described here uses FPGA, low-power microcontroller, analog front-end devices in the sensor node, and a Beaglebone black wireless board for posting data to a server. The overall system is small, operates at low power, and was deployed at Gran Canaria to detect the thickness loss of an S355 steel sample and consequently estimate the corrosion rate. This experiment aims to demonstrate the system's viability in marine environments and its potential to monitor corrosion in offshore wind turbines. In a day, the system takes four sets of measurements in 6 hour intervals, and each set consists of 5 consecutive measurements. Over the course of 5 months, the proposed experiment allowed for us to continuously monitor the corrosion rate in an equivalent corrosion process to an average thickness loss rate of 0.134 mm/year.
传统的海洋环境腐蚀研究方法是安装腐蚀试片。相反，本文提出了一种使用基于超声（US）技术开发的无人值守腐蚀传感器的实验现场研究，以评估靠近海洋的陆地（沿海地区）大气腐蚀引起的厚度损失。这里描述的系统在传感器节点中使用 FPGA、低功耗微控制器、模拟前端设备以及 Beaglebone black 无线板将数据发布到服务器。整个系统体积小、功耗低，并在大加那利岛部署以检测 S355 钢样品的厚度损失，并相应估计腐蚀率。该实验旨在证明该系统在海洋环境中的可行性及其在监测海上风力涡轮机腐蚀方面的潜力。在一天内，系统每 6 小时进行四组测量，每组包括连续五次测量。经过 5 个月的时间，该实验使我们能够连续监测等效腐蚀过程中的腐蚀率，平均厚度损失率为 0.134mm/年。
