TY - JOUR T1 - A Seabed Real-Time Sensing System for In-Situ Long-Term Multi-Parameter Observation Applications JF - Sensors Y1 - 2019 A1 - Liu, Lanjun A1 - Liao, Zhibo A1 - Chen, Caiyi A1 - Chen, Jialin A1 - Niu, Jiong A1 - Jia, Yonggang A1 - Guo, Xiujun A1 - Chen, Zhaowei A1 - Deng, Li A1 - Xu, Haibo A1 - Liu, Tao KW - buoy KW - real-time KW - remote monitoring KW - satellite communication KW - seabed observation KW - sensing KW - underwater acoustic communication AB - Aiming at the real-time observation requirements in marine science and ocean engineering, based on underwater acoustic communication and satellite communication technology, a seabed real-time sensing system for in-situ long-term multi-parameter observation applications (SRSS/ILMO) is proposed. It consists of a seabed observation system, a sea surface relay transmission buoy, and a remote monitoring system. The system communication link is implemented by underwater acoustic communication and satellite communication. The seabed observation system adopts the “ARM + FPGA” architecture to meet the low power consumption, scalability, and versatility design requirements. As a long-term unattended system, a two-stage anti-crash mechanism, an automatic system fault isolation design, dual-medium data storage, and improved Modbus protocol are adopted to meet the system reliability requirements. Through the remote monitoring system, users can configure the system working mode, sensor parameters and acquire observation data on demand. The seabed observation system can realize the observation of different fields by carrying different sensors such as those based on marine engineering geology, chemistry, biology, and environment. Carrying resistivity and pore pressure sensors, the SRSS/ILMO powered by seawater batteries was used for a seabed engineering geology observation. The preliminary test results based on harbor environment show the effectiveness of the developed system. VL - 19 UR - https://app.dimensions.ai/details/publication/pub.1112750908 https://www.mdpi.com/1424-8220/19/5/1255/pdf U1 - All arrays U2 - ER -