PLC Based Environment Monitoring System Of Household Security Robot Based On Wireless Mesh Network

Abstract

This project is developed for the users to control a Robot with Humidity sensor, Fire sensor and metal detector. The user can control the movements of the robot like hand up, hand down, Left and right. When the user presses a specific button of the computer, a signal corresponding to the operation is sent through serial port. The PLC receives the signal through serial port and controls the multi-channel RF transmitter. The RF transmitter connected with the ROBOT receives the signal and sends to the PLC. The PLC analyses the signal and accordingly it operates the relays in the external electronic circuit through driver section. The relay is used as a switch to operate the particular motor in the Robot. By this way the user can control any of the operations of the Robot. The sensors connected in the Robot senses the humidity, fire and metals. If it senses anything, it sends signal through RF transmitter. The RF receiver connected with the PC receives the data and displays about the critical situation. It stores the data in the PC. The design and port programs are written in Visual Basic. The PLC program is done in PLC programing language.

Existing System

Proposed System

Architecture

BLOCK DIAGRAM