时差法超声流量计低功耗设计方法的研究

摘要

To tackle the problem with power consumption of time difference ultrasonic flow meter system,a system is designed with the MSP430F449 microcontroller.For the hardware part,the system supplies multiple independent power to the various modules,so that it can achieve independent control of the relevant modules;for the software part,with a set of the internal registers on the microcontroller,it can achieve a precise control to the system clock frequency,time measurement,LCD,button module and so on.%针对时差法超声流量计系统的功耗问题,设计使用MSP430F449单片机为系统核心,硬件上采用多个独立电源为系统的不同模块供电,实现对相关模块的独立控制;软件上通过对单片机内部寄存器的合理设置,实现系统对时钟频率、时间计量以及LCD、按键等模块的精确控制.