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AUTOMATIC RAILWAY CROSSING GATE CONTROLLER


Posted by: sneha challa
Created at: Thursday 08th of April 2010 07:10:55 AM
Last Edited Or Replied at :Monday 06th of February 2012 10:12:53 PM
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wwant details regerding this pro..................[:=> Show Contents <=:]



MICROCONTROLLER BASED AUTOMATIC RAILWAY GATE CONTROL full report


Posted by: project topics
Created at: Saturday 03rd of April 2010 01:43:46 PM
Last Edited Or Replied at :Wednesday 09th of January 2013 04:22:43 AM
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sing by the micro controller 89C51 by the use of compensation.
If there is no vehicle in between or beneath the gates, then the laser light from the source falls on the LDR since there is no obstacle. Since there is no vehicle or obstacle, signal is made GREEN for the train to pass through the gate. The same is applied for in the other direction and SG3 and SG4 are made GREEN and gates are closed.
Due to some unavoidable circumstances, if there is a sudden breakdown of a vehicle between the gate, then the light from laser source does not fall on LDR. It indicates the presence of vehicle and ..................[:=> Show Contents <=:]



Automatic Railway Gate Controller Using Stepper Motor full report


Posted by: project report tiger
Created at: Tuesday 02nd of February 2010 02:06:03 AM
Last Edited Or Replied at :Thursday 08th of March 2012 09:55:10 PM
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hing the low byte of the address during accesses to external memory. This pin is also the program pulse input (PROG) during Flash programming. In normal operation ALE is emitted at a constant rate of 1/6 the oscillator frequency, and may be used for external timing or clocking purposes. Note, however, that one ALE pulse is skipped during each access to external Data Memory. If desired, ALE operation can be disabled by setting bit 0 of SFR location 8EH. With the bit set, ALE is active only during a MOVX or MOVC instruction. Otherwise, the pin is weakly pulled high. Setting the ALE-disable bit h..................[:=> Show Contents <=:]



Z-WAVE AS HOME CONTROL RF PLATFORM


Posted by: electronics seminars
Created at: Sunday 03rd of January 2010 12:35:05 AM
Last Edited Or Replied at :Sunday 03rd of January 2010 12:35:05 AM
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for a given parameter. Some are optimized for handling large networks (distributed algorithms), some for speed and yet others for resource usage. Given the limited number of nodes in a home control network the Source Routing Algorithm (SRA) is an efficient solution. An SRA provides a good balance between resources needed in the nodes and network size. In an SRA, the initiator generates the entire route through the mesh network to the destination and places this information into the frame header. The route is generated on basis of the topology information provided by the self-organizing ..................[:=> Show Contents <=:]



INTELLIGENT AMBULANCE FOR HOSPITAL GATES


Posted by: Electrical Fan
Created at: Monday 14th of December 2009 07:51:19 AM
Last Edited Or Replied at :Thursday 21st of January 2010 05:51:22 AM
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s displaying in digital moving display. But in these displays if they want to change the message or style they have to go there and connect the display to PC or laptop.Suppose the same message if the person wants to display in main centers of the cities means he have to go there with laptop and change the message by connecting into PC.This project we can use mainly for police or army. I.e. displays will be connected to all the main centers in city if they wants to display messages about something crucial within 5 minute, they canâ„¢tSo keeping in this mind we are designing a new display sy..................[:=> Show Contents <=:]



unmanned railway gate


Posted by: Ahamed
Created at: Monday 01st of March 2010 08:19:57 AM
Last Edited Or Replied at :Monday 01st of March 2010 11:26:37 AM
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plz help to find ppts on t..................[:=> Show Contents <=:]



Selective Catalytic Reduction SCR


Posted by: computer science crazy
Created at: Tuesday 07th of April 2009 11:58:25 AM
Last Edited Or Replied at :Tuesday 07th of April 2009 11:58:25 AM
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r a catalyst with Zeolites in the washcoat. In some jurisdictions use of a Vanadium based catalyst are frowned on (California) and the Zeolite type preferred, however Vanadium offers better performance...................[:=> Show Contents <=:]



Automatic Solar Tracker


Posted by: computer science crazy
Created at: Saturday 20th of September 2008 11:16:01 PM
Last Edited Or Replied at :Tuesday 01st of January 2013 10:31:55 PM
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fier terminal voltage.

The line current command is derived from a DC-link voltage regulator and an output power estimator. The hysteresis current Controller is used to track the line current command. To balance the neutral-point voltage, a capacitor voltage compensator is employed. The main advantages of using a three-level instead of a two-level PWM scheme are that the blocking voltage of each power switch is clamped to half the DC-bus voltage (if the off ?state resistance of power switches is equal),and the voltage harmonic on the AC side of rectifier is reduced.

A novel single p..................[:=> Show Contents <=:]



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