摘要
超声波流量计在流量测量中具有重要的应用,为了解决超声波流量计中测量精度不高的现象,设计了一种以EFM32TG110F32单片机为核心器件,用GP21测量超声波在液体中顺逆流时间,在数据处理中采用标定查表技术的一种时差法新型超声波流量计。在数据传输上采用非接触式的红外光学通信单元,测量装置简单,功耗底,测量精度高,误差不超过±1%。
Ultrasonic flowmeter has important applications in the measure of flow, in order to solve the low precision of ultra- sonic flowmeter, a new type of ultrasonic flowmeter based on time difference method was designed. The EFM32TG110F32 MCU was applied as the unit,the GP21 was used to measure the time downstream and upstream of ultrasound in liquid, and it used verifying and table lookup technology in the handing of data. It used non-contacted infrared communication in data transmission, the design has the advantage of simple structure,low power dissipation and high precision measurement, the error is within ± 1%.
出处
《仪表技术与传感器》
CSCD
北大核心
2014年第4期28-30,共3页
Instrument Technique and Sensor
关键词
超声波流量计
标定
红外光学通信
GP21
时差法
ultrasonic flowmeter
verify
infrared communication
GP21
time difference method
