Wireless Scada for Monitoring Load Conditions of Transformer and Temperature Control in Remote Plant
Abstract
The main aim of the paper is to process the real time data acquisition wirelessly under supervisory control for small and large scale remote industrial environment. In large industrial establishments many processes go on, therefore it is essential to monitor all the processes and control the factors affecting them. Adapting a technology like WIRELESS SCADA (Supervisory Control and Data Acquisition) one can achieve the above mentioned objective effectively, and thus saving a lot of manpower. For achieving this real-time scenario, a temperature & transformer logging system for a remote plant operation is taken. Here temperature sensors & voltage sensors are duly interfaced to the 8051 microcontroller. Data collected from the temperature sensors & voltage sensors are constantly sent over 2.4 GHz transmitter wirelessly to the microcontroller which is then received at the matched 2.4 GHz USB type receiver connected to a PC / Laptop. One can set parameters like set point, low limit and high limit on the computer screen. When the temperature & voltage of sensors goes beyond set point the microcontroller sends a command to the corresponding relay. The heaters (shown as lamps) connected through relay contacts (corresponding to their sensors) are turned OFF (or ON in vice versa). Hence, processes at hazardous areas can be controlled with more accuracy and better safety using SCADA. Adapting such a technology will save both money and time.
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Introduction
Supervisory Control and Data Acquisition., A SCADA system is a common process automation system which is used to gather data from sensors and instruments located at remote sites and to transmit and display this data at a central site for control or monitoring purposes. The collected data is usually viewed on one or more SCADA Host computers located at the central or master site. Wireless SCADA is required in those applications when wire line communications to the remote site is prohibitively expensive or it is too time consuming to construct. In particular types of industry such as power stations, Oil & Gas or Water & Wastewater, wireless SCADA is often the only solution due to the remoteness of the sites [1] –[3].
Conclusion
The importance of monitoring and controlling Industrial parameters lies in building efficient SCADA based wireless technology. Its applications range from providing security through intrusion detection to measuring important parameters such as Temperature, Light Intensity etc. in future Data can be sent in a bi-directional way. The ultimate goal of this project is to develop a technology to aid in the further development of bi-directional communication between a PC and a remote robot. A user should be able to send data in a full duplex mode i.e. transmit and receive simultaneously. Data can be broadcasted. Broadcasted data can be sent which will enable data to reach multiple recipients. We can use SCADA to manage any kind of equipment. Typically, SCADA systems are used to automate complex industrial processes where human control is impractical — systems where there are more control factors, and more fast-moving control factors, than human beings can comfortably manage.