优化sensorDataService
Merge remote-tracking branch 'origin/master'

Conflicts:
	realtimeMonitor/realtimeMonitor-business/realtimeMonitor-business-communication/src/main/java/org/whut/monitor/business/communication/service/SensorDataService.java
	realtimeMonitor/realtimeMonitorWeb/src/main/webapp/dashboard/realInfo.html