An embedded system is a specialpurpose system in which the computer is completely encapsulated by or dedicated to the device or system it controls. High voltage fuse blown indicator with display on computerpc. Hand book on microprocessor based control system version. In this paper is presented the design and implementation of a microprocessorbased computer system for the control and operation of a compression molding process system. The development and manufacture of hardware and software for the traction control system was taken up at barc. Engineering and commissioning llp was created by experts in railway industry aiming to make it possible for countries all over the world to build safe railroads and help people travel around the world in.
The availability of low cost, low power and small weight, computing capability makes it useful in different applications. Barc was identified as a partner in this development and doe agreed to partfinance this work. In this system, we use ir sensors to measure the traffic density. Short circuit level highest system voltage kv short circuit apparent power mva 52 200 72. The microprocessor in railway control systems springerlink. Lecture note on microprocessor and microcontroller theory. The objective of the project was to automate and control temperature for a server. The objective of this paper is to provide an automatic railway gate at a level crossing replacing the gates operated by the gatekeeper. A microprocessorbased locomotive brake control system having an electropneumatic brake pipe pressure regulating circuit via which a train brake pipe pressure is controlled and a normally closed charging cutoff valve between the brake pipe regulating circuit anad the brake pipe. A fully integrated ied equipped substation with 25 breakers testing the full complement of data displayed on a local monitoring system and rtu. The registers inside the microprocessor read only memory rom used to store information that does not change. Due to the mismatch in the speed between the microprocessor and other devices, a set of latches and buffers are required to interface the microprocessor with other devices. Such programmatic approach entails microcontroller based automated water level sensing and controlling. Reviewing a microprocessor based system design information.
Embedded realtime clock based industrial devices control system. Gps based trainbus station indication system with display on lcd. Pdf design of a microprocessorbased control system of a. Railway gate may be saved for the road users to prevent accidents in terms of train speed at level crossing. Included is a discussion of the system software necessary for a microprocessor system to be useful. Here we employ the microprocessor intel 8085 to handle the signaling, track changing and gate operation and to monitoring the traffic. Microcontroller microprocessor with builtin memory and ports and can be programmed for any generic control application.
Railways approached the railway board with a proposal for indigenous development of microprocessorbased traction control systems, primarily targeted towards retrofitting the large fleet of tapchanger locomotives owned by indian railways. Usually, there is a memory sub system in a microprocessorbased system. Railway signalling solid state interlocking ssi railway. Automatic level crossing system spa4 is microprocessors system automatically protecting traffic on railway crossing.
Microprocessorbased gammaray spectral logging with scintillation detector to trace the analog profiles of total, k, u and th channels with corresponding depth. Report of a comparative analysis of the interlocking. Us4711418a radio based railway signaling and traffic. The impact of microprocessor in different lures of fields is significant. Automatic railway gate control system using 8051micro controller. An attempt has been made to obtain a balance between theory and practice, with. Microprocessor based systems, also known as mbs, are those systems in which the key component is a microprocessor. Generalpurpose microprocessor used in general computer system and can be used by programmer for any application. It is the number of bits processed in a single instruction. Now a days, a microprocessor based systems are used in instructions, automatic testing product, speed control of motors, traffic light control, light. The use of microprocessors has evolved in rail tran sit and has spread to all the. General overview of the system the research work presented here is the design and development of a microprocessor based automatic gate. Sensor based railway gate automation system is developed. Gb180382000general specification of microprocessorbased protection equipment for electrified railway traction power supply system text of document is in chin.
Now nearly 20 years later, we are still using systems based more or less on the design of that first pc. Microcontroller based automated water level sensing and. Today a microprocessorbased control system is a fundamental component in many of the industrial control and automation applications. In order to eliminate the restriction caused by railway communication on development of national economy, heavy duty transportation is the main direction planned by the. Hkkjr ljdkj government of india ministry of railways. Microprocessor based locomotive control system mep 660. Commissioning microprocessor based ied communication. The aim of this project is to demonstrate the incorporation of computer method in railway traffic control to improve, safety, speed of handling the traffic and also reliability. The proposed model has been designed using 8052 microcontroller to avoid railway accidents occurring at unattended railway.
As technology has progressed, microprocessors have become faster, smaller and capable of doing more work per clock cycle. The object of this book is to present both hardware and software concepts that are important in the development of microprocessorbased control systems. Application of microprocessors in railway systems has been as promising as is. Abstracta laboratory model incorporating a microprocessorbased system to control signals and points and to monitor track circuits is described. To design an 8086 based system, it is necessary to know how to interface the 8086 microprocessor with memory and input and output devices. Microprocessorbased traction control system for 25 kv ac. The principle components of a microprocessor system as well as their interaction and interconnection are discussed. Control system the vital part of diesel electric locomotive. This approach is successful in conventional electric traction systems.
Solid state interlocking ssi was one of the first microprocessor based system, designed for use in railway signaling installations to compute and execute the signaling interlocking functions. Microprocessors are being increasingly utilized for improving the performance of control systems and making them more sophisticated as well as reliable. Economics of computer based system for industrial application 1. Introduction to microprocessors the microprocessor is one of the most important components of a digital computer. The objective of this paper is to manage the control system of railway gate using the microcontroller. Intel 8085 microprocessor based system the microprocessor is a semiconductor device integrated circuit manufactured by the vlsi very large scale integration technique. Improved technology in the field of microprocessor based digital control systems has made the application of control and fault diagnostic system possible in conventional locomotives.
Hall is the author of microprocessors and interfacing 4. Application of microprocessors in railway systems has been as promising as is seen in other fields. In 2010 zeit became a subsidiary of progress rail services, a caterpillar company zeit control. In this paper is presented the design and implementation of a. Proper knowledge and up keeping of mep control system version 3. Gps and microcontroller based geographical location identification system. The microprocessor based control and fault diagnostic system has been developed for conventional electric locomotives including locos provided with static converter. In chapter three we described the concrete idea of pic16f84a. It was first designed in 1980 by inmos and is targeted to the utilization of vlsi technology.
Government of bangladesh has published international tender notice for design, supply, installation, testing and commissioning of computer based interlocked signaling system at 7 stations including interlocking of selected level crossings and installation of optical fiber cable based telecommunication system for block operation and ctc interface work turnkey works in. A railway signaling and traffic control system which minimizes the wayside equipment and eliminates the pole lines which carry power and signals along the rightofway using instead the radio channel between the trains and the central office. The microprocessor as a railway control system component. It is a leader in the railway automation industry, primarily manufacturing the sal microprocessor system for locomotive control, increased adhesion, and remote diagnostics. Railways approached the railway board with a proposal for indigenous development of microprocessorbased traction control systems, primarily targeted.
As a monitoring and control system, the microprocessor was used to read in data values from the input device and interact with the outside world. I current increment relay are usually used as main and backup feeder protection of electric traction systems. The charging cutoff valve is electropneumatically controlled in order to effect opening of the normally closed. It will be discussed here for historical reasons and because some equipments terms it is used in other systems. Unlike a generalpurpose computer, such as a personal computer, an embedded system performs one or a few predefined tasks, usually with very specific requirements. After mentioning the sound applications to monitoring onboard equipments, traffic control, passenger information systems, control at marshalling yards, etc. Application of microprocessors in railway systems has been as prom. Here we designed a simple non contact tachometer using microcontroller which can measure speed with an accuracy of 1 revsec density based traffic signal system using microcontroller. To perform a function or useful task we have to form a system by using microprocessor as a cpu and. Sensor based automatic control of railway gates international. Present day railway control systems are based on the use of. Microprocessorbased system identification by signal compression method. It includes the alu, register arrays and control circuit on a single chip. Automatic railway gate control system using microcontroller.
Prepc microprocessor history it is interesting to note that the microprocessor had only existed for 10 years prior to the creation of the pc. This is a maintenance free alternative to the popularly used e type excitation for this application. Pdf ee6008 microcontroller based system design mcbsd. This system is being tested in the field in different areas for its performance. A microprocessor is a programmable, multipurpose, clock driven, registerbased electronic device that accepts binary data as input, stores it in the form of instructions, processes the data and gives the desired output.
Design and implementation part is described in chapter four. Chapter two concentrated with the basic concepts of the system design. Overview of microprocessorbased controls in transit and. Each train communicates with devices, such as passive beacons, which provide zone boundary messages. Assume your human brain as a microprocessor which can store memory. A transputer is a specially designed microprocessor with its own local memory and having links to connect one transputer to another transputer for interprocessor communications. It determines the number of operations per second the processor can perform. Microprocessorbased railway interlocking control with. Hand signals include signals given by hand, or by flags or lamps used. Data verified includes, but is not limited to that of scenario a, but also, alarms, control, status, events, reports.
Gbt 180382000 general specification of microprocessor. Automation of railway gate control using microcontroller. Osacbm is an abbreviation for open system architecture for condition based maintenance and is. Sal microprocessor control system upgrade for older. It is the set of instructions that the microprocessor can understand. Commissioning microprocessor based ied communication systems an65a00 6 b. Particular applications of microprocessors in trainborne logic systems are described. Later sections include more focused discussions on differing types of system.