Design And Implementation Of Hardware Platform For Subsea Dynamic Environment Monitoring System Based On Observation Network

In recent years, in order to achieve greater progress in terms of environment observation and resources development and utilization of the marine, countries are actively developing marine exploration technology. Seafloor observatory network as a new type of marine exploration technology, integrated a number of nodes on the deep seabed observation area for long-term real-time monitoring of chemical, physical and geological processes, has become the third important observation platform following the ocean survey ships and remote sensing satellites. Subsea dynamic environment monitoring system is an important node in the South China Sea observation network test system. Besides, the implementation of a hardware platform is the premise of the system working on the seafloor with several kinds of marine instruments. Therefore, the development of a high stability, reliability and scalability of the hardware platform to ensure long-term real-time monitoring of submarine dynamic environment and promote the establishment of a seafloor observatory network in china has an important significance.This article use ATMEL’s AT91SAM9263 ARM processor and microcontroller AT90CAN128 for control core, integrated data monitoring and control systems and protocol conversion and power management system, using CAN bus distributed management to achieved the various marine equipment power supply control, data acquisition, real-time upload and other functions. Besides, through the backup battery, redundancy design, isolation mechanism and exception handling mechanism of robust design, this paper ensures that the hardware platform can be long-term, real-time, stable work at the bottom of the sea.This paper is divided into five chapters, introduction mainly introduces development status of undersea observation technology at home and abroad, and the importance of establishing Sea-Bed dynamic environment monitoring system. The first chapter describes the overall design of the hardware platform of subsea dynamic environment monitoring system. Through the functional requirements of the system and the comparison of two kinds of sensor management scheme, the part determines the overall architecture of the hardware platform. The second chapter introduces the hardware circuit design and working principle of each module of ARM monitoring system and microcontroller management system. It presents the corresponding schematics and the PCB layout design rules, and describes the anti-jamming design of the circuit in detail. The third chapter mainly introduces the work process, including the ARM embedded Linux system multiple application threads and AT90can128 microcontroller program. Which ARM dual redundant and system status in real-time monitoring technology used in this paper greatly improve the reliability of the hardware platform work. In the fourth chapter to verify the stability and reliability of hardware platform overall work, we has separately carried on the indoor test and environment test, and finally through the shallow sea trials and system testing, the results show that the hardware platform has reached the system design standard. Chapter V of this paper summarizes the work done and prospects.