现代电子技术2024，Vol.47Issue(20)：51-56,6.DOI:10.16652/j.issn.1004-373x.2024.20.009
基于超声波时差法的变电站变压器冷却油流速测量
Ultrasonic time-of-flight method based measurement of cooling oil flow velocity in substation transformer
摘要
Abstract
In allusion to the problem of high precision measurement of cooling oil velocity in substation transformer,a non-contact wireless oil velocity monitoring system based on ultrasonic time-of-flight method is designed.A high-power pulse signal with a center frequency of 1 MHz is generated to drive a piezoelectric ceramic ultrasonic transducer to emit continuous ultrasonic waves into the cooling oil.After amplifying,filtering,and shaping the ultrasonic echo signal,a high-precision time measurement chip FS1022 is used to measure the time-of-flight between the initial pulse signal and the conditioned echo pulse signal.The flow velocity is calculated by means of the time-of-flight between the downstream and upstream,and the data is transmitted to the cloud via low power consumption Bluetooth.The experimental results demonstrate that when the communication range of the system is within 15 m,the packet delivery rate is higher than 90%.The measurement error of ultrasonic propagation time is less than 1%in cast iron pipes with diameters ranging from 50 mm to 150 mm.The designed cooling oil flow rate measurement system offers high accuracy and speed,while also being easy to install and unaffected by fluid conductivity,making it highly applicable in practical settings.关键词
变电站变压器/冷却油/流速测量/超声波时差法/高精度时间测量/蓝牙通信Key words
substation transformer/cooling oil/flow velocity measurement/ultrasonic time-of-flight method/high precision time measurement/Bluetooth communication分类
电子信息工程引用本文复制引用
李乳演,谢桂辉,白迪..基于超声波时差法的变电站变压器冷却油流速测量[J].现代电子技术,2024,47(20):51-56,6.基金项目
国家自然科学基金项目:多功能综合射频传感网络无锚点协同定位(62201621) （62201621）
湖北省重点研发计划项目:基于能量与信息同步传输的智能化多源异构传感技术研究(2023BAB082) （2023BAB082）
2023年教育部产学合作协同育人项目:新工科背景下软硬融合的测量技术师资培训(230806261091548) （230806261091548）
