Wireless Valve Control Via RF Remote Termination Unit (RTU)

Mohd Syahrawardillah, Mad Zin (2011) Wireless Valve Control Via RF Remote Termination Unit (RTU). Project Report. UTeM, Melaka, Malaysia. (Submitted)

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Abstract

This project describes an investigation of the use of Radio Frequency (RF) as the medium in control data communication between plant equipment include Valve as the final control element and sensor as the input device. The main purpose is to investigate the appropriate of the Radio Frequency to be the control data communication medium of Remote Termination Unit (RTU). The RTU is used to convert all the data into signal transmission form. The commonly RTU used the Fiber Optic and Ethernet cable as the transmission medium. In this project the Radio frequency (RF) is used as the transmission medium. Rather the fiber optic is the much better than RF, this project try to reduce the cost and reduce the problem within RF medium. This project is design for the hazardous plant. Therefore, control panel will build out of the plant area. All the automation control, such as the PLC will place in plant area include the instrument sensor, plant equipment and termination device (Valve). Moreover the input and output assemble in auxiliary room. The control panel only receives and transmits command data to auxiliary room. Even though the valve and process plant working automatically, all the operations are important to monitor. The process and operation are monitoring by the operator. Human Machine Interface (HMI) was used by design the graphical interface that represents the operation. Furthermore by the HMI the operation of the process also can be controlled manually especially to shutdown the operation, to bypass the interlocking, forcing the valve and so on. From the HMI, the operator also can know the alarm status and acknowledge it. The final result the valve as the controlled element can remotely and the plant status can controlled by the RF communication medium.

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