SUPERVISORY CONTROL AND DATA ACQUISITION SYSTEM USING GSM MODEM (Electronics project)

SUPERVISORY CONTROL AND DATA ACQUISITION SYSTEM USING GSM MODEM

TECHNICAL SPECIFICATIONS:

Title of the project                  :           Supervisory Control and Data Acquisition System

Using GSM Modem

Domain                                   :           GSM and Embedded

Software                                  :          Embedded C, Keil, Proload

Relay                                       :           5V, 100Ω SPDT

Power Supply                          :           +5V, 750mA Regulated Power Supply

Display                                    :           16X2 LCD

Sensors                                    :           LDR, Temperature sensor

ABSTRACT:

SCADA is an acronym for Supervisory Control and Data Acquisition. SCADA systems are used to monitor and control a plant or equipment in industries such as telecommunications, water and waste control, energy, oil and gas refining and transportation. These systems encompass the transfer of data between a remote are where the parameters have to controlled using advanced wireless technology one such  technology is GSM based SCADA. A SCADA system gathers information (such as where a sensor has exceeded its value), transfers the information back to control area through a short message, then alerts the station were sensor has occurred, carrying out necessary analysis and control, such as switching ON the load .

    In this project, we are using two sensors, relays, ADC (Analog to Digital Conversion), Microcontroller, LCD (Liquid Crystal Display) for displaying the messages.

           By using this project, one can control the TEMPERATURE, LIGHT, by means of a GSM modem by sending SMS. In this application two conditions will be displayed whether we want to change the temperature, light intensity else not that can be varied depending upon the user’s requirement.

The project will be operated in two modes Automatic mode, manual mode of operation. In automatic mode if the sensors have sensed the raise in parameters automatically the loads will be switched ON. And in the manual mode if any raise occurs in sensors occur automatically a message will be given to the user end in terms of a small message, by sending a counter SMS the raised parameters will be decreased.

                                                                                                      

   This project uses regulated 5v, 750mA power supply. 7805, a three terminal voltage regulator is used for voltage regulation. Bridge type full wave rectifier is used to rectify the ac output of secondary of 230/12v step down transformer

Block Diagram: