深海环境数据转发系统的设计与实现

发布时间：2018-05-31 21:26

本文选题：深海 + 数据转发　；参考：《哈尔滨工程大学》2016年硕士论文

【摘要】：深海的开发对我国海洋战略的实施、海洋经济的可持续发展具有十分重要的意义。海洋环境复杂多变,水文监测设备、水下机器人、无人潜器等都是人类了解海洋的重要工具。这些工具对海洋的深度、温度、盐度、流速、地形等参量的测量产生了大量的宝贵数据,亟需一种可靠的数据传输系统将其传至陆地进行储存和分析。基于以上需求,本文设计了一种深海环境数据转发系统,该系统包括潜标和浮标两部分。它的功能是海底的潜标将采集和存储的来自CTD (温盐深仪)、ADCP (声学多普勒流速剖面仪)等海洋环境监测设备的数据,以扩频通信的方式经由水声信道传至水面浮标;浮标对接收的水声扩频信号进行解调和解扩,并通过卫星通信方式将解调后的数据发送至陆地的PC端,最终实现深海环境监测数据的远程传输目的。本系统的运行过程全程自动,无需人工干预,相比传统的数据转发系统更节省人力物力,并且具有实时性和便捷性。本文的主要工作有:设计了系统的整体方案,包括参数设计、系统结构方案和硬件方案,对深海耐压仪器舱进行了选型,并在设计中使用A3LA-RG型铱星卫星通信模块实现卫星通信功能。设计了系统的硬件平台电路,包括值班板、ARM数字信号处理板、电源板和底板。设计了搭载于硬件平台的MSP430程序,包括MSP430值班程序、串口通信程序及铱星通信程序,基于现有的扩频通信算法动态链接库设计了系统的ARM应用程序,实现了数据的存储功能、板卡间接口通信功能和铱星控制功能。进行了电气联调、水池试验和海试。在系统的电气联调中,对硬件的性能进行了充分的测试,对软件的功能也进行了反复的测试验证,结果证明系统可以完成数据转发功能。在实验室水池条件下进行了试验,对系统的发射声源级进行了测量,结果满足设计要求;功能验证试验验证了系统可以完成数据转发功能。在外海试验中,分别进行了水平通信试验、垂直通信试验和铱星通信功能验证试验,水平通信试验初步验证了仪器舱的水密性和系统的工作稳定性符合设计要求;垂直通信试验进一步验证了仪器舱的水密性,在保证通信距离的情况下系统可以准确无误的完成数据转发;铱星通信功能试验,准确无误的收到了附带海洋环境数据的邮件,验证了数据转发链路的通畅,系统可以保证数据转发功能的实现。
[Abstract]:The development of deep sea is of great significance to the implementation of ocean strategy and the sustainable development of marine economy. The complex marine environment, hydrological monitoring equipment, underwater vehicles, unmanned submersible vehicles are important tools for human understanding of the ocean. The measurement of ocean depth, temperature, salinity, velocity, topography and other parameters has produced a great deal of valuable data, and a reliable data transmission system is urgently needed to store and analyze it on land. Based on the above requirements, this paper designs a deep-sea environmental data forwarding system, which consists of two parts: submarine and buoy. Its function is that submarine submersible will collect and store data from marine environment monitoring equipment such as CTD (temperature and salt depth instrument), which is transmitted to the water surface buoy by means of spread spectrum communication via underwater acoustic channel. The buoy demodulates and despreads the received underwater acoustic spread spectrum signals, and transmits the demodulated data to the PC terminal of the land by satellite communication, so as to realize the remote transmission of the deep-sea environmental monitoring data. Compared with the traditional data forwarding system, the operation process of the system is automatic and without manual intervention, which saves manpower and material resources, and has real-time and convenience. The main work of this paper is as follows: the whole scheme of the system is designed, including the parameter design, the system structure scheme and the hardware scheme. The A3LA-RG Iridium satellite communication module is used to realize the satellite communication function in the design. The hardware platform circuit of the system is designed, including watch board arm digital signal processing board, power supply board and bottom board. The MSP430 program carried on the hardware platform is designed, including the MSP430 watch program, the serial communication program and the Iridium communication program. Based on the existing spread spectrum communication algorithm dynamic link library, the system ARM application program is designed, and the data storage function is realized. Board card interface communication function and Iridium satellite control function. Electrical adjustment, pool test and sea test were carried out. In the electrical connection of the system, the performance of the hardware is fully tested, and the function of the software is tested repeatedly. The results show that the system can complete the function of data forwarding. The experiment was carried out under the condition of laboratory pool, and the measurement of the transmitting sound source level of the system was carried out, and the results met the design requirements, and the function verification test verified that the system could complete the function of transmitting the data. In the offshore test, horizontal communication test, vertical communication test and Iridium communication function verification test are carried out respectively. The horizontal communication test preliminarily verifies the watertightness of the instrument cabin and the working stability of the system to meet the design requirements. The vertical communication test further verifies the watertightness of the instrument module, and the system can accurately complete the data forwarding under the condition of ensuring the communication distance. The Iridium communication function test has accurately received the mail with marine environment data. The system can guarantee the realization of data forwarding function.
【学位授予单位】：哈尔滨工程大学
【学位级别】：硕士
【学位授予年份】：2016
【分类号】：P715

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