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iot_dataanalytics's Introduction

包含内容/代码介绍:

  1. 通过树莓派模拟物联网设备与AWS GreenGrass以及IoT Core进行交互,发送实时的数据到AWS IoT Core。

  2. 传感器数据实时展现:数据到达IoT Core后,由AWS IoT规则引擎进行处理,筛选出温湿度指标。分两路输出到后端, a)一路将数据写入到Dynamodb表中。 b)另外一路数据写入到kinesis data stream。使用Flask开发的web页面负责将Dynamodb表中收集到的实时数据使用echart控件动态展现出来,ajax页面每秒刷新一次。

  3. 异常数据实时监测: EMR sparkstreaming 实时消费,上一步IoT 规则引擎写入到kinesis data stream中的数据,对数据进行实时监控分析,如果监控数据有异常,实时发送邮件告警。 异常数据识别模型由孤立森林(Isolation Forest)算法训练而来。sparkstreaming 中调用了该模型实现异常数据检测。

  4. 云端/APP端通过AWS IoT设备影子反向控制树莓派二极管灯开关,模拟云端/app端控制物联网设备

总体架构:

image

云端/APP端远程控制树莓派二极管灯开关

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实时告警实现:

模式一:基于机器学习的物联网数据监控和异常数据实时告警 SNS: 1. 配置规则 EMR: 1. 使用 Spark Mlib/Python Sklearn 用历史数据训练 Isolation Forest 模型 2. 启动EMR 集群 – Spark 组件 预配置运行环境 EMRFS 读S3内容,实现模型动态加载

模式二:基于经验规则的物联网数据监控和异常数据实时告警 Greengrass Lambda: 1. Lambda 接收Greengrass消息,指标运算 2. 调用SNS服务

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SparkStreaming 实时数据监控分析 树莓派 -> AWS IoT Core -> AWS IoT Rule -> Kinesis DataStream -> EMR SparkStreaming(contains Isolation Forest Model) -> AWS SNS

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