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In allusion to the failure data submergence in a circuit breaker burning accident in a conventional substation of a coal mine, and in view of those supervision and control system defects in a conventional substation such as information islands, complication of network nodes and subsystems, nonstandardization of application function, poor expansion of system, and also high charge of operating and maintenance,...
To improve the automation level of flow measurement device in the lab, enhance the ability of experiment, and make the efficiency of using these equipments higher, a remote measurement and control system for flow meter verification which based on Labview and PLC is designed in this paper. This system can realize volume and master meter method for verification. Experimental results show that it is...
To achieve the monitoring and control function of traffic signal lights, a system using PLC with Ethernet function as its controller is developed. The local control program is based on IEC61131-3 standard language and the remote control program is based on LabVIEW. OPC Server realizes the data communication between controller and remote control program. This system with web camera installed in the...
An Autoregressive model (AR model) based on Empirical Mode Decomposition (EMD) was applied to identifying gas-liquid two-phase flow regime. At first, the dynamic differential pressure signals coming from Venturi tube were processed by normalization, EMD and denoise. Afterwards, the Intrinsic Mode Functions (IMF) contained flow regime information were selected to establish AR models. Through models...
To achieve intelligent control algorithm in Foundation Fieldbus process control system, a method which combines LabVIEW and MATLAB to design a real time intelligent control system is presented in this paper. The intelligent control algorithm programmed in MATLAB can be stimulated by LabVIEW SIT, the communication between LabVIEW and fieldbus instruments can be established by OPC Sever, the human machine...
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