目录摘要一、设备状态监控概述1.1 状态监控架构1.2 设备状态类型1.3 监控指标二、状态检测2.1 在线状态检测2.2 运行状态检测2.3 故障状态检测三、状态变更追踪3.1 状态变更表3.2 状态持续时间计算3.3 状态变更统计四、状态统计4.1 在线率统计4.2 运行率统计4.3 故障率统计五、状态可视化5.1 状态看板数据5.2 设备状态列表5.3 状态趋势数据六、告警通知6.1 状态告警规则6.2 告警推送七、实战案例7.1 完整设备状态监控系统八、总结参考资料摘要本文深入讲解DolphinDB设备状态监控技术。从状态定义到状态变更追踪从在线检测到离线判断从状态统计到状态可视化全面介绍设备状态监控的核心方法。通过丰富的代码示例帮助读者掌握实时状态追踪的核心技能。一、设备状态监控概述1.1 状态监控架构状态监控架构设备数据状态检测状态变更状态存储状态展示1.2 设备状态类型状态说明在线设备正常通信离线设备无响应运行设备正在工作待机设备空闲故障设备异常维护设备维护中1.3 监控指标指标说明在线率在线时间/总时间可用率可用时间/总时间故障率故障次数/总次数响应时间数据上报间隔二、状态检测2.1 在线状态检测//设备心跳表 share table(1:0,device_idlast_heartbeatonline_status,[SYMBOL,TIMESTAMP,INT])asdevice_heartbeat//心跳更新defupdateHeartbeat(deviceId){existingselect*fromdevice_heartbeat where device_iddeviceIdif(existing.rows()0){update device_heartbeatsetlast_heartbeatnow(),online_status1where device_iddeviceId}else{insert into device_heartbeat values(deviceId,now(),1)}}//在线检测defcheckOnline(timeout60000){thresholdnow()-timeout update device_heartbeatsetonline_status0where last_heartbeatthreshold}//定时检测defonlineCheckTask(){while(true){checkOnline(60000)//60秒超时 sleep(10000)}}submitJob(online_check,在线检测,onlineCheckTask)2.2 运行状态检测//设备运行状态表 share table(1:0,device_idtimestampstatusduration,[SYMBOL,TIMESTAMP,INT,LONG])asdevice_status//状态检测规则defdetectRunStatus(deviceId,data){//基于数据判断运行状态if(data.power0anddata.speed0){return1//运行}elseif(data.power0){return2//待机}else{return0//停止}}//状态变更记录defrecordStatusChange(deviceId,newStatus){lastStatusexeclast(status)fromdevice_status where device_iddeviceIdif(isNull(lastStatus)orlastStatus!newStatus){insert into device_status values(deviceId,now(),newStatus,0)}}2.3 故障状态检测//故障检测规则defdetectFault(deviceId,data){faultsarray(INT,0)//温度过高if(data.temperature80){faults.append!(1)}//振动异常if(data.vibration10){faults.append!(2)}//电流异常if(data.current100){faults.append!(3)}returnfaults}//故障记录 share table(1:0,fault_timedevice_idfault_typefault_levelvalue,[TIMESTAMP,SYMBOL,INT,INT,DOUBLE])asfault_logdefrecordFault(deviceId,faultType,faultLevel,value){insert into fault_log values(now(),deviceId,faultType,faultLevel,value)}三、状态变更追踪3.1 状态变更表//状态变更记录表 share table(1:0,change_timedevice_idold_statusnew_statusduration,[TIMESTAMP,SYMBOL,INT,INT,LONG])asstatus_change//记录状态变更defrecordStatusChange(deviceId,oldStatus,newStatus,duration){insert into status_change values(now(),deviceId,oldStatus,newStatus,duration)}3.2 状态持续时间计算//计算状态持续时间defcalculateStatusDuration(deviceId){changesselect*fromstatus_change where device_iddeviceId order by change_timeif(changes.rows()0){return0}lastChangechanges[-1]returnnow()-lastChange.change_time}3.3 状态变更统计//状态变更统计defgetStatusChangeStats(deviceId,startTime,endTime){returnselect new_status,count(*)aschange_countfromstatus_change where device_iddeviceIdandchange_time between startTimeandendTime group by new_status}四、状态统计4.1 在线率统计//在线率统计defcalculateOnlineRate(deviceId,startTime,endTime){heartbeatsselect*fromdevice_heartbeat where device_iddeviceIdandlast_heartbeat between startTimeandendTimeif(heartbeats.rows()0){return0.0}onlineCountsum(heartbeats.online_status)totalCountheartbeats.rows()returnonlineCount*100.0/totalCount}//批量在线率defbatchOnlineRate(startTime,endTime){returnselect device_id,sum(online_status)*100.0/count(*)asonline_ratefromdevice_heartbeat where last_heartbeat between startTimeandendTime group by device_id}4.2 运行率统计//运行率统计defcalculateRunRate(deviceId,startTime,endTime){statusDataselect*fromdevice_status where device_iddeviceIdandtimestamp between startTimeandendTimeif(statusData.rows()0){return0.0}runTimesum(iif(statusData.status1,statusData.duration,0))totalTimeendTime-startTimereturnrunTime*100.0/totalTime}4.3 故障率统计//故障率统计defcalculateFaultRate(deviceId,startTime,endTime){faultsselect count(*)asfault_countfromfault_log where device_iddeviceIdandfault_time between startTimeandendTime totalRecordsselect count(*)astotalfromdevice_status where device_iddeviceIdandtimestamp between startTimeandendTimeif(totalRecords.total[0]0){return0.0}returnfaults.fault_count[0]*100.0/totalRecords.total[0]}五、状态可视化5.1 状态看板数据//状态看板数据defgetStatusDashboard(){//设备总数 totalDevicesexeccount(distinct device_id)fromdevice_heartbeat//在线设备数 onlineDevicesexeccount(*)fromdevice_heartbeat where online_status1//运行设备数 runningDevicesexeccount(*)fromdevice_status where status1//故障设备数 faultDevicesexeccount(distinct device_id)fromfault_log where fault_timenow()-3600000returndict(STRING,ANY,[[totalDevices,totalDevices],[onlineDevices,onlineDevices],[runningDevices,runningDevices],[faultDevices,faultDevices],[onlineRate,onlineDevices*100.0/totalDevices]])}5.2 设备状态列表//设备状态列表defgetDeviceStatusList(){returnselect h.device_id,h.online_status,s.statusasrun_status,h.last_heartbeat,s.timestampaslast_updatefromdevice_heartbeat h left join device_status s on h.device_ids.device_id}5.3 状态趋势数据//状态趋势defgetStatusTrend(startTime,endTime){returnselect bar(change_time,1h)ashour,count(*)aschange_countfromstatus_change where change_time between startTimeandendTime group by bar(change_time,1h)}六、告警通知6.1 状态告警规则//状态告警规则 statusAlertRulestable([offline,fault,long_standby]asrule_name,[600000,0,3600000]asthreshold,//毫秒[2,1,3]asalert_level)//检查状态告警defcheckStatusAlerts(){alertsarray(STRING,0)//离线告警 offlineDevicesselect device_idfromdevice_heartbeat where online_status0andlast_heartbeatnow()-600000for(deviceinofflineDevices){alerts.append!(设备离线: device.device_id)}returnalerts}6.2 告警推送//告警推送defpushAlert(alertType,deviceId,message){//记录告警 insert into alert_log values(now(),deviceId,alertType,2,0,message)//推送通知//sendEmail(message)//sendSms(message)//sendWechat(message)print(告警: message)}七、实战案例7.1 完整设备状态监控系统//设备状态监控系统//1.创建状态表 share table(1:0,device_idlast_heartbeatonline_status,[SYMBOL,TIMESTAMP,INT])asdevice_heartbeat share table(1:0,device_idtimestampstatusduration,[SYMBOL,TIMESTAMP,INT,LONG])asdevice_status share table(1:0,change_timedevice_idold_statusnew_statusduration,[TIMESTAMP,SYMBOL,INT,INT,LONG])asstatus_change share table(1:0,fault_timedevice_idfault_typefault_levelvalue,[TIMESTAMP,SYMBOL,INT,INT,DOUBLE])asfault_log//2.初始化设备definitDevices(){devicestable(1..10asdevice_id)for(deviceindevices.device_id){insert into device_heartbeat values(device,now(),1)insert into device_status values(device,now(),1,0)}}initDevices()//3.心跳更新任务defheartbeatTask(){while(true){//模拟心跳for(deviceIdin1..10){updateHeartbeat(deviceId)}sleep(5000)}}submitJob(heartbeat,心跳任务,heartbeatTask)//4.在线检测任务defonlineCheckTask(){while(true){checkOnline(60000)sleep(10000)}}submitJob(online_check,在线检测,onlineCheckTask)//5.状态统计接口defgetStatusDashboard(){totalDevicesexeccount(distinct device_id)fromdevice_heartbeat onlineDevicesexeccount(*)fromdevice_heartbeat where online_status1runningDevicesexeccount(*)fromdevice_status where status1returndict(STRING,ANY,[[totalDevices,totalDevices],[onlineDevices,onlineDevices],[runningDevices,runningDevices],[onlineRate,onlineDevices*100.0/totalDevices]])}addFunctionView(getStatusDashboard)//6.测试print(getStatusDashboard())print(设备状态监控系统启动完成)八、总结本文详细介绍了DolphinDB设备状态监控状态检测在线检测、运行检测、故障检测状态变更变更记录、持续时间、变更统计状态统计在线率、运行率、故障率状态可视化状态看板、状态列表、状态趋势告警通知告警规则、告警推送思考题如何提高状态检测的准确性如何处理设备状态抖动如何设计状态历史查询参考资料DolphinDB流计算DolphinDB状态监控