抛弃式海水温度测量系统的设计  

Design of Expendable Sea Temperature Measurement System

作　　者：焦冰[1] 叶松[1] 陈振涛[1] 王晓蕾[1] 温雅婷[1] 

机构地区：[1]解放军理工大学气象学院,江苏南京211101

出　　处：《海洋技术》2012年第3期6-8,16,共4页Ocean Technology

基　　金：国家自然科学基金资助项目(40976062);江苏省自然科学基金资助项目(BK2012513)

摘　　要：介绍了一种抛弃式海水温度测量系统的设计。针对电池供电和空间受限的海水温度测量环境,基于MSP430单片机低功耗、高性能、多外设的优良特性,提出了一种热敏电阻测温方案。利用单片机内部的基准电源和A/D转换器实现对热敏电阻信号的激励和采样;通过MSP430单片机各种工作模式之间的灵活转换,降低了系统的功耗;采用电压源比例测量法,由热敏电阻阻值与温度的对应关系获得海水温度。系统温度分辨率0.01℃,使用一等标准铂电阻测温仪检定,温度测量误差小于±0.1℃。A design of expendable sea temperature measurement system was introduced. According to the sea temperature measurement environment of restricted battery power and space, a thermistor temperature measurement scheme was presented based on the excellent characteristics such as low power, high performance and multi-peripherals of MSP430. Thermistor signal was excited and sampled with the on-chip voltage reference and ADC. Low power was realized through switching work modes of MSP430. Voltage source proportion measurement was adopted in the system and the sea temperature was obtained with the relationship between resistance value and temperature. The resolution of the system temperature was 0.01 ℃. The test results by grade I standard platinum resistance thermometer showed that measurement errors of this system were within ±0.1 ℃.

关 键 词：海水温度测量 抛弃式探头 热敏电阻 MSP430 低功耗 

分 类 号：P716.12[天文地球—海洋科学]