在工业物联网场景中,边缘设备监控至关重要。以下脚本实现设备状态采集与异常预警:
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| function Get-IoTDeviceStatus { [CmdletBinding()] param( [Parameter(Mandatory=$true)] [string[]]$DeviceIPs, [ValidateRange(1,100)] [int]$SamplingInterval = 30 )
$report = [PSCustomObject]@{ Timestamp = Get-Date OnlineDevices = @() OfflineDevices = @() HighTempDevices = @() LowBatteryDevices = @() }
try { $DeviceIPs | ForEach-Object -Parallel { $response = Test-NetConnection -ComputerName $_ -Port 502 -InformationLevel Quiet $telemetry = Invoke-RestMethod -Uri "http://$_/metrics" -TimeoutSec 3
[PSCustomObject]@{ IP = $_ Online = $response Temperature = $telemetry.temp BatteryLevel = $telemetry.battery LastSeen = Get-Date } } -ThrottleLimit 10
$results | ForEach-Object { if(-not $_.Online) { $report.OfflineDevices += $_.IP continue }
$report.OnlineDevices += $_.IP if($_.Temperature -gt 85) { $report.HighTempDevices += $_.IP }
if($_.BatteryLevel -lt 20) { $report.LowBatteryDevices += $_.IP } }
if($report.HighTempDevices.Count -gt 0) { Send-Notification -Type "HighTemp" -Devices $report.HighTempDevices }
if($report.LowBatteryDevices.Count -gt 0) { Send-Notification -Type "LowBattery" -Devices $report.LowBatteryDevices } } catch { Write-Warning "设备监控异常: $_" }
return $report }
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实现原理:
- 使用并行处理加速多设备状态采集
- 通过Test-NetConnection验证设备在线状态
- 调用REST API获取设备遥测数据
- 设置温度(85°C)和电量(20%)双重预警阈值
- 自动触发邮件/短信通知机制
使用示例:
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| $devices = '192.168.1.100','192.168.1.101','192.168.1.102' Get-IoTDeviceStatus -DeviceIPs $devices -SamplingInterval 60
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最佳实践:
- 与TSDB时序数据库集成存储历史数据
- 配置指数退避策略应对网络波动
- 添加设备白名单安全机制
- 实现预警静默时段功能
注意事项:
• 需要设备开放502端口和/metrics端点
• 建议使用硬件加密模块保护通信安全
• 监控间隔不宜小于30秒