摘要
为解决石油工业的狭小空间管道阀门连接件松动监测存在精度低、响应滞后及多节点定位模糊等难题,设计了一种集成磁阻传感、广域通信与融合定位的监测系统。通过各向异性磁阻(anisotropic magnetoresistance,AMR)传感器非接触式磁场检测,解析磁场方向变化实现阀门微松动的精准识别,该方案避免了安装对设备结构的侵入性影响。采用4G Cat-1和MQTT(message queuing telemetry transport)协议数据加密传输(AES-128)构建工业物联网(IIoT),以节点唯一ID与地理坐标绑定实现多点监控。测试结果表明:传感器电压信号采集精度高,无线传输稳定,能够有效识别阀门微松动状态并实现多节点精确定位,为智能管道建设提供了可靠技术支撑。
To address the problems of low precision,response lag,and ambiguous multi-node positioning in the loosening monitoring of pipeline valve connectors in the confined spaces of the petroleum industry,a monitoring system integrating magnetoresistive sensing,wide-area communication,and fusion positioning was designed.Through non-contact magnetic field detection by an AMR(anisotropic magnetoresistance)sensor,the precise identification of micro-loosening of valves was achieved by analyzing changes in the magnetic field direction.This solution avoided the invasive impact on the equipment structure during installation.The industrial internet of things(IIoT)was constructed using the 4G Cat-1 and MQTT(message queuing telemetry transport)protocols with AES-128 encrypted data transmission.Multi-point monitoring was realized by binding the unique ID of each node to the geographic coordinates.The test results show that the sensor has high voltage signal acquisition precision and stable wireless transmission,can effectively identify the micro-loosening state of valves and achieve accurate positioning of multiple nodes,providing reliable technical support for the construction of intelligent pipelines.
作者
文若铭
苏淑靖
谷培杰
蔡磊
WEN Ruoming;SU Shujing;GU Peijie;CAI Lei(North University of China,State Key Laboratory of Extreme Environment Optoelectronic Dynamic Measurement Technology and Instrument)
出处
《仪表技术与传感器》
北大核心
2026年第2期75-81,87,共8页
Instrument Technique and Sensor
基金
国家自然科学基金项目(51875534)。
关键词
狭小空间
非接触式磁测量
状态监测
物联网
confined space
contactless magnetic measurement
condition monitoring
internet of things
