Sensory-Based Colour Sorting Automated Robotic Cell.
ABSTRACT Robotics application in colour recognition using fiber optic cabled sensors interfaced with robot controller and Programmable Logic Controller (PLC) is discussed in this paper. The sensors send input signals to the robot controller and the specified program will be executed with respect to the triggered input. The aim of this research work is to recognize colour by pin point detection and sorting of object specimens with respect to their colour attributes, which includes hue, saturation and luminance level. The controller programs were designed to control the robot and the conveyor belt independently parallel to each other via relays, to be synchronized during operation. Finally, the calculative results were verified experimentally and the real time implementation was carried out. It can be observed how controllers are integrated and synchronized in a system to perform a desired operation without conflict using real time applications such as chemical, pharmaceutical, agricultural, food industries and even recycling.
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ABSTRACT: The purpose of this study is to design a Programmable Logic Controller (PLC) to command 8-relays to control and automate ac loads via PC parallel port. In this project, the PLC is connected to the Personal Computer called hybrid PLC and this PC controls all the field ac loads via parallel printer port. Eight signals of different sequences are sent on parallel port via computer keyboard, which activate the microcontroller as inputs. Microcontroller responds according to these inputs and its user programming, which then commands 8-relays to control (on/off) different electronic appliances. Microcontroller memory makes easier to store its programming permanently. This hybrid PLC is applicable for controlling and monitoring industrial processes particularly of small to medium scale manufacturing processes and may be used for home automation as well. Parallel port is accessed by a program written in C++ language and microcontroller is programmed in assembly language. Ac load of any kind, whether resistive or inductive can be controlled with the help of this project.Journal of Applied Sciences. 01/2007;