基于MSP430F449的超低功耗超声波热量表设计  

Design of Ultra - Low Power Consumption Ultrasonic Heat Meter Based on MSP430F449

作　　者：肖慧敏[1] 王鹏翔[1] 董言志[1] 

机构地区：[1]烟台大学光电信息科学技术学院,山东烟台264005

出　　处：《电声技术》2013年第4期33-35,共3页Audio Engineering

摘　　要：为了提高超声波热量表的测量精度,系统设计中采用了高速时间数字转换器TDC-GP21的解决方案。流量的测量使用超声波时差法原理,通过MSP430F449单片机控制TDC-GP21实现流体温度以及超声波飞行时间的测量,减少了外围电路设计的复杂度,大幅降低了系统的功耗与成本。In order to improve the measurement precision of ultrasonic heat meter, a solution based on high speed time -to - digital converter in a single chip TDC - GP21 is adopted in designing system. Flow rate is measured by travel time principle. The TDC - GP21 is controlled by MSP430F449 microcontroller to achieve the measurement of flow rate temperature and ultrasonic flight time,and reduce the complexity of peripheral circuit design and the power consumption and the cost of the ultrasonic heat meter.

关 键 词：TDC—GP21 流量测量 温度测量 M—BUS 超声波热量表 

分 类 号：TH81[机械工程—仪器科学与技术]