单片机与CPLD技术的海底接驳盒电能监控系统

为了实现海底观测网长期稳定运行,设计一种可靠性高、响应速度快的电能监控管理系统.该系统用于海底观测网络接驳盒,主要任务是实现电能接驳的远程设置控制,同时完成各路外接传感器电压电流及接驳盒内部各腔体的温度漏水情况的监控.系统下位机主要基于单片机和复杂可编程逻辑器件(CPLD)设计实现.通过单片机采集多点温度和漏水信号,监控接驳盒腔体状态；通过CPLD控制高速采样芯片时序,检测负载电压电流参数,结合控制指令和远程阈值设定完成异常判断,实现实时负载监控和异常处理.下位机通过以太网与基站上位机通信,完成监控数据上传和控制指令接收.结果表明,该系统在美国蒙特利加速研究系统（MARS）海底观测网上已完成了为期6个月的接驳联调海试,运行稳定无故障.

Power monitor system in seafloor junction box based on MCU and CPLD

A power monitor system of high reliability and fast response was designed and implemented to achieve long term stable operation of seafloor observatory network.The system is used in the junction box of the cabled seafloor observatory network.It controls the power by remote setting,while monitoring working situation inside the chambers of the junction box as well as voltage and current of each channel to all the external sensors.The lower computer is mainly consisted of a MCU and a complex programmable logic device(CPLD).The temperature and leakage inside the chamber is monitored by MCU.CPLD monitors the voltage and current of each load by controlling the timing of AD chip,receives the command and remote setting,finishes the logical judgment.Further,the system achieves real-time situation monitoring and exception handling.The lower computer communications with the host computer in shore station via Ethernet,including uploading monitoring data and receiving commands.The system has successfully finished its 6-months sea trial of Chinese node in monterey accelerated research system(MARS) seafloor observatory of USA,running stable without failure.