Abstract

When it comes to public safety and personal safety, it is always desirable to improve upon the way people are warned about potentially dangerous situations and also we require 100 percent perfection in warning method. To date there does not appear to be any railroad collision avoidance system that can effectively warn a person when train is on its track. The conventional railway accident avoiding system uses warning lights and human controlled gates to alert a motorist that there is an oncoming train. The most of the railroad crossing ....etc

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automatic temperature control system using plc ppt ....etc

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to get information about the topic elevator control using plc related topic refer the page link bellow

http://seminarsprojects.net/Thread-lift-control-using-programmable-logic-controller?pid=27522&mode=threaded ....etc

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i want elevator control design based on low cost processor project hard copy and absrtact please send me the project sser ....etc

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To get full information or details of elevator control system please have a look on the pages

http://seminarsprojects.net/Thread-elevator-control-using-plc-ppt

if you again feel trouble on elevator control system please reply in that page and ask specific fields in elevator control system ....etc

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plz give the deyail of voice based elevator display control technique
plz give the detail of voice based elevator display control technique ....etc

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voice based elevator movement and display control technique

Abstract

Elevator is the main part in day to day life .it become transport devices that we are using every day
.elevator is useful to move goods and persons. In this project,we are using the microcontroller AT89S52 .on this microcontroller the elevator controller is constructed to simulate as elevator in the real elevator. This project dissertation documents the results of a research on a microcontroller based elevator control system. It provides useful data to those who want to carr ....etc

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circuit diagram of elevator control system using plc ....etc

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plc elevator ladder logic example pdf

On modern elevators the control logic is PLC based, probably because relays are more expensive than electronic components. Besides a PLC makes simple the electrical connections and reduces the chance of failure. On old elevators the direction of the car is controlled by selectors mounted in the shaft, one at each floor. On modern elevators there may be one impulse switch only, mounted on the top of the car. When the elevator moves the impulse switch detects a sequence of magnets placed in the shaft, then s ....etc

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#include

int main(void) {
int M, F3, F2, F1;
printf( Enter bit (either 0 or 1) for M: );
scanf( %d , &M);
printf( Enter bit (either 0 or 1) for F3: );
scanf( %d , &F3);
printf( Enter bit (either 0 or 1) for F2: );
scanf( %d , &F2);
printf( Enter bit (either 0 or 1) for F1: );
scanf( %d , &F1);

if(M == 0 && F3 == 0 && F2 == 0 && F1 == 0) {
printf( \nOpen: 0 );
}
else if(M == 0 && F3 == 0 && F2 == 0 && F1 == 1) {
printf( \nOpen: 1 );
}
else if(M == 0 && F3 == 0 && F2 == 1 && F1 == 0) {
printf( \nOpen: 1 );
}
else ....etc

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