The Design And Implementation Of Thetelecontrol And Telemetering Terminal Of Navigation Mark

Nowadays the inland waterway in transport is no longer as important as theformer times,with the burden of the transportation industry increase, revitalizing thewaterway shipping shouldn’t be delay.China’s12thFive-Year Plan proposed toestablish the navigation mark system of digital information and rapid response.Theinvestment of construction of the Yangtze River navigation mark reaches513millionyuan.Face the huge domestic market, the relevant enterprises starts to focus on theresearch and development with independent intellectual property rights navigationmark, this paper comes from this issue.The telecontrol and telemetering terminal of navigation mark in developedcountries has developed for many years. AIS,GSM/GPRS wireless communicationtechnologies have been applied maturely in navigation mark systems. The Americanbeacon focuses on functional refinement, custom-designed for the actual complexfairway buoy; Japan makes the mandatory installation for its vessels AIS system andbuild a wide range of signal intensity AIS network.The development of domesticbeacon technology grows rapidly in recent years, and the enterprises have FuzhouMinyoujixing, Shanghai Weishi, Beijing Nanhangtian research and developmentcompany. Fuzhou Minyoujixing gets the highest technology and market share.This article focuses on hardware implementation, solve the following key issues:(1) In order to meet a wide input voltage,build a power switching and highefficiency power conversion circuit;(2) Build a solar charging circuit,and through maximum power point trackingalgorithm to achieve high efficiency charge;(3) Design485switch module to enable MCU can control multiple485strobes;(4) By improving the quality of light collection algorithm improves the faulttolerance.Solve the problems in practical applications due to electromagneticinterference that cannot be collected correctly the light quality problemsThe difficulty of the relecontrol and telemetering terminal of navigation markdesign lies in the complexity of the power input to complete the conversion inaccordance with the design requirements, system design for charging and dischargingthe battery, for AIS and GSM/GPRS modules to achieve, and in order to save costs,the full use of discrete steps components to build the circuit. Design also enablesinfrared communication module, antenna production,485switching module, and in the appendix of this article shows the buoy terminal digital power board, main controlboard, data acquisition board PCB.By improving the design of each module and key software algorithms, the paperproduces a successful implementation of the terminal, include digital power supplyboard, remote sense and remote control board, AIS transmitter board, dataacquisition boards. The terminal passes the functional and performance,environmentaladaptability,electromagnetic compatibility testing. After installation and testing, thesystem is reliable,current acquisition accuracy reaches0.1A,voltage acquisitionprecision reaches0.1V. AIS launch success rate of85%, Total power consumption isless than0.8W. Not only to achieve all the design requirements perfectly, but also toadapt to the complex geological and meteorological conditions, the terimanl meetsthe design objectives.