A high performance CMOS ProgrammableLogic Array (PLA) circuit implemented by a new circuit technique is presented. The gate outputs are preconditioned to minimize delay using a new clocking scheme and circuit design. A multi-level logic and layout synthesis tool which utilizes the CVTL circuit technique is also presented. We describe the overall design methodology for generating the high performance PLA. The simulated benchmark circuits show that the average power-delay product is 2.1 times smaller than the pseudo-n MOS implementations for 0.25 μm process
In the recent era, Reversible computing is a growing field having applications in nanotechnology, optical information processing, quantum networks etc. In this paper, the authors show the design of a cost effective reversible programmablelogic array using VHDL. It is simulated on Xilinx ISE 8.2i and results are shown. The proposed reversible Programming logic array called RPLA is designed by MUX gate & Feynman gate for 3- inputs, which is able to perform any reversible 3- input logic function or Boolean function. Furthermore the quantized analysis with comparative finding is shown for the realized RPLA against the existing one. The result shows improvement in the quantum cost and total logical calculation in proposed RPLA.
The programmablelogic controller was developed from difficulties encountered in the automobile industry, aiming to succeed relay control panels, becoming one of the most used equipment in the implementation of systems automation. Over the years, software and hardware aspects have been incorporated into the original idea, making PLC one of the main industrial automation solutions .
Traffic signal control system is used to control flow of automobiles through intersection of many roads. This paper presents feasible approach of ProgrammableLogic Controller (PLC) for controlling traffic signal lights using eddy current displacement sensors and for traffic intersection a proportionate signaling is designed. In this system, piezoelectric material is used to generate power from load of vehicles when the vehicles is in idle situation in traffic signal junction and load of people who usually use pathways across traffic road. This paper also represents that manual traffic signal control system can be replaced by using PLC automatic control system. In this system, maximum around 1200 mV amount voltage generated using 845 gm vehicle load.For this work, SIEMENS, SIMATIC S7-300 PLC, sensors, monitor is used and this idea which is implemented in traffic control system is feasible and affordable in any situation of traffic congestion all over the world.
SCADA can be defined as a type of and industrial control system by using computer networking. The computer will be functioning as controlling and monitoring in physical world. The main purpose of SCADA is combined real-time data, monitoring and controlling equipment process in critical facilities such as oil and gas production, transmission and distribution, industrial control, electrical power distribution process monitoring, display information in a graphical user interface and others types of application that related to SCADA system . A SCADA network is necessary provided connection between servers which in a particular inside a control centre and control device which located at fields sometimes are remote location. SCADA system essential of several equipments such as HMI, Remote Thermal Unit (RTU), ProgrammableLogic Controller (PLC), substation controller server, power equipment and others system . Furthermore, SCADA system also plays an important role by providing utilities with valuable information at the same time in a reliable and safe manner.
This project is focusing on the integration of ProgrammableLogic Controller (PLC) as the control system for the AGV, sensors for sensing and giving feedback data, servo motor for steering system and the Direct Current (DC) motor as the drive system. Sensing is an important part in AGV on how the robot will detect the route, the destination, any obstacle during the path and its own state such as the battery level and operating status. Control of AGV is about the functionality of the AGV during the run on how it will react to the surroundings, forward movement, backward movement, driving and steering. The motor selection is based on the weight of the load, torque and the speed of the AGV .
hardware description of the system and its specifications. Reference  In the Distributed Control System (DCS), the data exchange between the ProgrammableLogic Controllers (PLC) is usually completed through the wired network. ZigBee wireless communication technology is introduced in the design of a new type of PLC to overcome the communication cable boundaries. In  the planning is concentrated on development of mobile automatic guided vehicle (AGV) controlled by decentralized edge PLC SIMATIC ET200S hardware. Wireless communications area unit considered because the two leading two-way communications technologies for the rising good Grid applications in , because the received signals from the NB-PLC and wireless links area unit allowed to hold identical info, to supply robustness against the interference encountered on each links. In  the system is focused on developing an ESP8266 based Low cost Wi-Fi based wireless sensor network, the IEEE 802.11n protocol is used for system. In most of the existing wireless sensor network are designed based on ZigBee and RF frequencies. Reference  discusses the natural bottleneck between mass sensor information and Electric Power Communication Transmission Network to put forward the concept of information aggregation layer under the background of heterogeneous network convergence. And lastly, the  deals with the sample IOT based security system which utilizes the ESP8266 as the wireless module in order to implement the wireless technology. Delta PLC of the model DVP14-SS2 is used for the customization. They are a second-generation model which consists of 8 Digital Inputs and 6 Digital Outputs of a very slender make. High speed timers and counters can be accessed for multiple timing and scheduling of processes. It also sports an adjustable serial port and an expansion bus which facilitates additional modules for increased supervision without extra wiring and is powered by the SMPS connections. An RS232 cable is used to connect to the MAX3232 converter, from which the Wi-Fi module ESP8266 is connected, with the software program downloaded onto it from the Arduino in order to establish wireless transmission and reception. The MAX3232 is used to converts the signals from the RS232 serial port to the proper signal which are used in the TTL compatible digital logic circuits. The MAX232 converts the signals like RX, TX, CTS, and RTS and it is a dual driver/receiver.
A ProgrammableLogic Controller (PLC) or programmable controller is a digital computer used for automation of typically industrial electromechanical processes, such as control of machinery on factory assembly lines, amusement rides, or light fixtures. PLCs are used in many machines, in many industries. In our project, we are using GENIE-NX PLC (General Industrial Control PLC) for overload prevention in conveyor.
have replaced hardwired relays with a combination of ladder–logic software and solid state electronic input and output modules. Following fig 1.1 explores the programmablelogic controller architecture (PLC). They are often used in the implementation of a SCADA RTU as they offer a standard hardware solution, which is very economically priced. SCADA is the main feature of any automation system. The ability to remotely monitor and control electric power system facilities found its first application within the power generation and transmission sectors of the electric utility industry.
Automated Coffee Tea Vending machine is successfully implemented on ProgrammableLogic Controller M340.by Schneider Electric.Sequential Functional Chart used for PLC is a graphical language which is easier to understand and implement.The main drawback of having any automated machine is that it will ultimately lead to decrease in manpower which leads to unemployment issues in populated countries. Another drawback is the difficulty in adaptating to an new situation that may arise when dealing with users
computer used for automation of the electromechanical process. It is used to convert the previously used relay logic or wired logic for automation of an industrial process into ladder logic. It is used automate respective process but in this project Siemens LOGO is used which lie in the cheapest category or entry level of PLC. This paper deals with Automatic Fluid Level Control Using ProgrammableLogic Controller in Alameda Textile Factory. Currently Almeda Textile Factory is used conventional relay control system to control level of fluid, however there are a lot of limitations , such as wastage , large no of labors, and difficult to maintained . In order to minimize those problems, We have tried to make Automatic using PLC. Electronic device used in my project are As sensor - switch, level sensor (limit switches) , As controller :-PLC and pump motor, solenoid valve. Having the above device, I have also programmed using Ladder logic diagram In LOGO SOFTCOMFORT Software and stimulate in order to load to PLC
ABSTRACT: Mostly the waste management is one of the most important things in day to day life. This waste disposal mostly disturbs the earth environment because of lack of segregation of the particular waste. The waste disposal mainly consists of plastic items, metal waste, and waste from industries like E-waste, etc. Here the metal waste can be recycled in a proper manner if the metal disposal is segregated separately. This metal segregation can be done by detecting the metals in the waste that is coming in through any source. Here we have done a simple conveyor based system which separates the metal from non-metals. This will be useful in the waste segregation process. This system will separate the metal using the ProgrammableLogic Controllers (PLC) and a simple conveyor system will helps to segregate the metals.
The revealing and changing trends in information and communication technology (ICT), as well as the automation control system had suggested the new competence and learning such as skills of critical thinking, problem solving, decision making, team working and so on are more important and critical rather than students are often forced to muddle through group processes in the effort to learn. This learning process is being utilised to our students in Electrical Engineering using Problem Based Learning approach, for example ProgrammableLogic Controller (PLC) subject which will be described in this paper.
This paper presents a study of transformer monitoring and load tap-changer control. Earlier control schemes were the “paralleling balancer”, the “master/follower” and the “circulating current” schemes. schemes had their drawbacks. The scheme as presented in this paper is implemented using programmablelogic, math functions and IEC 61850 communications over fiber-optic Ethernet. The presented scheme achieves ease and speed of installation, a more integrated system with less field using, minimal control cable runs and terminations and minimal overall installation time. With SCADA control accomplished over a DNP3 loop, need for electromechanical switches is eliminated. ree parallel 230/115KV autotransformers on the Santee Cooper
The Electronics Engineering Technology (EET) Program at Central Washington University (CWU) offers courses in ProgrammableLogic Controller (PLC) applications. The program previously relied on out-of-date, rack-mounted PLC equipment to support this class. While this provided the students with a procedural introduction to PLCs, it did not allow for a conceptual understanding or real world experience with the equipment. The EET Program recently developed an updated set of PLC units utilizing the Allen-Bradley CompactLogix® L30ER controller that allowed an open platform for the laboratory component of the class while fostering a conceptual understanding of the topic.
The need for a stand-alone device, one of the main downfalls of PID controllers, can easily be eliminated by implementing the control scheme from within a general purpose programmablelogic controller (PLC). Utilizing a PLC as the primary cerebrum is a common practice in industrial plants. However, in order to accomplish PID control from within a PLC, one frequently needs a PID coprocessor that can be programmed in a language other than the standard PLC ladder logic. These coprocessors, which are often obtained from a company other than the PLC manufacturer, can add a significant amount to the overall PLC cost and therefore work against the goal of reducing the cost of the control system. In addition, the performance of the controller is still hindered by the limitations of PID control.
Due to the fast performance of DC motors, these motors are regulated in a wide range of speeds and can be used in many applications. The main advantage of using DC motors in today's world is the ability to easily control the speed and angle of the motor. This project is about controlling the speed of DC motor by using ProgrammableLogic Controller. The controller has more advantages than conventional control circuits. The benefits can be noted such as reducing the size of the control panel, very low energy consumption, Durable Equipment, Proper operation in the worst cases. Using PLC for controlling industrial systems is initiated in 1968 and, its development has been greatly accelerated in recent years.
Abstract:In industries, inspection is one of the crucial factors to ensure quality of the product before reaching the market.The objective of this project is to design a Mechatronics system to monitor the dimensions of the product (clevis) using the pneumatics system with the help of ProgrammableLogic Controller (PLC).The clevis is placed in the clevis holder, which is used to hold the work piece tightly. Then the pneumatic cylinders which are controlled by PLC XE 102 extends and retracts based on the ladder logic diagram. The calibrated gauges are attached in the pneumatic cylinders, if the GO/no GO gauge travels smoothly inside the hole, it can be concluded that the dimensions of the hole is in accordance to the specified standard dimensions. This system improves the dimensional inspection and also eliminates the human errors andcan be done at lower cost.
PLC’s were developed in the late 1960’s to eliminate the large cost involved in changing complicated relay based machine control systems. These systems were inflexible. Their major rewiring or complete replacement was nec- essary every time when the production requirements changed and control sequences had to be modified. It became very expensive when changes were frequent. The idea to replace relay systems with flexible microproces- sor based Programmablelogic controllers PLC’s was a revolutionary step in the industrial control business .
The configuration information is typically stored in a set of SRAM bits (in some cases, anti-fuses are used rather than SRAM bits). The values in these SRAM bits determine what function each lookup table implements and how they are connected. The SRAM bits can be configured into one or more shift registers, and, once the chip is powered up, can be loaded by the user. Besides providing the ability to customize the circuitry after fabrication, the use of SRAM bits allows the designer/user to re-configure the core as many times as desired. For a more detailed description of programmablelogic circuitry, see .