MSP430低功耗原理及其在海温测量中的应用

Low-power Consumption Principle of MSP430 and Its Application in Sea Temperature Measurement

介绍了MSP430系列单片机的低功耗原理及工作模式,分析了各种工作模式之间的快速转换方式。针对电池供电和空间受限的海水温度测量环境,利用MSP430系列单片机低功耗、高性能、多外设的优良特性,提出了海水温度采集系统的设计方案。方案采用MSP430F4794作为运算控制器,NTC热敏电阻作为温度传感器,利用MSP430F4794芯片内部自带的16位A/D转换器进行A/D转换。硬件设计上采用低功耗的外围器件,软件设计上充分利用MSP430提供的多种低功耗工作模式,实现了整个系统的低功耗。

The low-power consumption principle of SCMs in MSP430 series and its working mode are introduced. The fast conversion way among all kinds of working modes is analyzed. According to the sea temperature measurement environment of battery power supply and space restriction, a design scheme of sea temperature acquisition system is presented by means of the excellent characteristics such as low-power consumption, high performance and multi-peripherals of SCM in MSP430 series. MSP430F4794 chip is taken as the operation control unit in the scheme and NTC thermistor as the temperature sensor. The analog-to-digital conversion is implemented by SD16_A inside MSP430F4794 chip. The low power peripheral devices are adopted in hardware design, and the low power consumption of the whole system is realized through various low power working modes provided by MSP430 in software design.