基于LoRa技术的井下数据采集系统

Downhole Data Acquisition System Based on LoRa Technology

为了采集井下的温度、压力、流量等重要参数,分析井下作业状态,提升对井下作业的认知程度,提出了一种基于LoRa技术的井下数据采集系统,以超低功耗单片机为控制核心,利用LoRa技术的传输距离远、低功耗等特点,采用间歇性休眠方式对数据进行采集。主要介绍了系统的工作原理、硬件框图和软件流程图,以及如何将采集到的数据进行上传和存储,改变了传统设备连接失败或是收发数据时数据丢包现象,且延长了井下电池的使用寿命。实验结果表明,在井下80℃以下温度的情况下,系统能够正常工作。基于LoRa技术的井下数据采集系统可以应用于油田井下的数据采集,符合数字化油田的发展方向。

In order to gather the downhole temperature,pressure,flow rate and other important parameters,analyzing the underground work state,improving cognition of downhole operation,this paper proposes a data acquisition system in downhole based on the technology of LoRa.It uses ultra-low power microcontroller as the control core and LoRa technology,such as transmission distance,low power consumption and other characteristics,and the use of intermittent sleep mode to collect data.It mainly introduces the work principle,hardware block diagram and software flow chart,and how to collecte and store data.It has changed the failure of traditional equipment connection or data loss when sending and receiving data,and extended the life of batteries underground.