设备巡检管理系统与物联网集成：实时数据采集、自动预警的进阶应用方案

// 传感器数据采集示例
public class SensorDataCollector
{
    // 采集温度数据
    public double ReadTemperature(string sensorId)
    {
        // 实际应用中这里会连接物理传感器
        // 返回模拟数据
        return 25.6 + new Random().NextDouble() * 2;
    }
    
    // 采集振动数据
    public VibrationData ReadVibration(string sensorId)
    {
        return new VibrationData
        {
            Frequency = 50.2,
            Amplitude = 0.8,
            Timestamp = DateTime.UtcNow
        };
    }
}

// 实时数据处理示例（Node.js）
class DataProcessor {
  constructor() {
    this.buffer = new Map();
  }
  
  // 处理实时数据流
  async processStream(dataStream) {
    for await (const data of dataStream) {
      // 数据清洗和标准化
      const cleanedData = this.cleanData(data);
      
      // 异常检测
      const anomalies = this.detectAnomalies(cleanedData);
      
      // 存储处理结果
      await this.storeResults(cleanedData, anomalies);
    }
  }
  
  cleanData(rawData) {
    // 实现数据清洗逻辑
    return {
      ...rawData,
      value: parseFloat(rawData.value),
      timestamp: new Date(rawData.timestamp)
    };
  }
}

-- 预警规则配置表设计
CREATE TABLE EarlyWarningRules (
    RuleID INT PRIMARY KEY IDENTITY,
    EquipmentType NVARCHAR(50) NOT NULL,
    ParameterName NVARCHAR(100) NOT NULL,
    NormalRangeMin DECIMAL(10,2),
    NormalRangeMax DECIMAL(10,2),
    WarningThreshold DECIMAL(10,2),
    CriticalThreshold DECIMAL(10,2),
    CheckFrequency INT, -- 检查频率（秒）
    IsActive BIT DEFAULT 1,
    CreatedDate DATETIME DEFAULT GETDATE(),
    ModifiedDate DATETIME DEFAULT GETDATE()
);

-- 预警记录表
CREATE TABLE WarningRecords (
    RecordID BIGINT PRIMARY KEY IDENTITY,
    RuleID INT FOREIGN KEY REFERENCES EarlyWarningRules(RuleID),
    EquipmentID NVARCHAR(100) NOT NULL,
    ActualValue DECIMAL(10,2) NOT NULL,
    WarningLevel INT NOT NULL, -- 1:提示, 2:警告, 3:严重
    TriggerTime DATETIME DEFAULT GETDATE(),
    IsProcessed BIT DEFAULT 0
);