海床基海洋环境自动监测系统的低功耗中央控制单元设计与实验

Design and Experiment of Low Power Consumption Central Control Unit of The Oceanic Environments Automatic Measuring System

海洋监测仪器及系统的设计 ,需要从高可靠性、低功耗、长时间工作、小体积、轻重量等几个方面进行深入分析和研究。本文设计的海床基海洋环境自动监测系统的中央控制单元 ,采用工业DSP、带中断输出的时钟芯片、FLASHRAM和低阈值VMOS功率管等低功耗 3 3V器件 ,应用中断和休眠软件设计方法 ,很好地满足了使用要求。通过实验和分析 ,指出了低功耗海洋监测仪器及系统设计的基本原则 ,总结了DSP闲置的管脚处理、上拉电阻阻值合理选择和电池自放电电流等问题的解决方案和应用经验。

When ocean measuring instrument and system is de signed, the high dependability, low power consumption, long working hours, small volume and low weight should be considered. In the design of Central Control Unit of Ocean Meas uring Instrument discussed in this paper, the industrial DSP, serial alarm real- time clock, FLASH RAM, low threshold VMOS and other low power consumption compon ent are utilized, the interruption and stand-by mode methods are used, and the r equirement of design is satisfied exactly. By experiment and analysis, the funda mental principle and experience of low power DSP design are provided. The proble ms about DSP idle pin disposal, pull-up resistors selection and batter automatic discharge are discussed.