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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 :Friday 13th of February 2015 08:26:16 AM
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wwant details regerding this pr..................[:=> 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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e depending on the timing at which the train arrives. Hence, if the train is late due to certain reasons,then gate remain closed for a long time causing traffic near the gates.
By employing the automatic railway gate control at the level crossing the arrival of the train is detected by the sensor placed near to the gate. Hence, the time for which it is closed is less compared to the manually operated gates and also reduces the human labour. This type of gates can be employed in an unmanned level crossing where the chances of accidents are higher and reliable operation is required. Since, the ..................[:=> 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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interrupt 1)
P3.4 T0 (timer 0 external input)
P3.5 T1 (timer 1 external input)
P3.6 WR (external data memory write strobe)
P3.7 RD (external data memory read strobe)
Table 2.2.1 Port3 description of AT89C51 Microcontroller
9
RST: Reset input. A high on this pin for two machine cycles while the oscillator is running resets the device.
ALE/PROG: Address Latch Enable output pulse for latching 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 ..................[:=> 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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erfacing with AT89C51 using ULN2003.
The interfacing of stepper motor consists of several parts like AT89C51 microcontroller, stepper motor, and ULN2003 current driver chip. This can be used in this project for the purpose of gate control . For the gate control a 12v stepper motor is used.ULN2003 is a current driver chip used for supply control to the stepper motor; it is a 16 pin dip.AT89C51 is a 40 pin dip micro controller, can be divided in to four ports, it is driven by 5v supply.

30
Fig no: 7.2.2 The block diagram of stepper motor interfacing
Here a stepper motor is used for..................[:=> 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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SRAM memory storage and a range of peripherals. The ZW0201 is fully compatible with the 100 Series systems and can be easily incorporated into existing product lines.


Benefits of ZW0201

Lowest Price:
The ZW0201 will allow you to cost reduce your products by dollars! The chip will be priced below $3 when ordered in 100 k quantities. Further the chip has integrated many external components to also reduce the surrounding component to about $1 meaning that a product can be Z-€Wave enabled by adding less than $4 to the Bill of Material.

Most ef..................[:=> 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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in this mind we are designing a new display system which can access remotely, we are using the GSM technology to access the displayâ„¢s is one of the new technology in the embedded field to make the communication between microcontroller and mobile..................[:=> 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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(most commonly ammonia or urea) is added to the flue gas stream and is absorbed onto a catalyst. The reductant reacts with NOx in the flue gas to form H2O and N2.

Specialty Catalytic Converters are required to make an SCR system work, the current options being a Vanadium based catalyst, or 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.

SCR catalysts function well only within a narrow temperature window, and for OEM installations the Eng..................[:=> 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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two- or-three ? level PWM.
Based on the model analysis, the switching signals of the power switches can be derived from the measured line current error and the mains voltage. Experimental results show a good line current waveform with almost unity power factor and low current harmonics to meet the requirements of IEC 1000-3-2 class A. The transient response due to load change is about one cycle and voltage drop is about 5V. According to measured results the proposed rectifier has the properties of high power factor, low current distortion and fast dynamic response, based on the proposed contr..................[:=> Show Contents <=:]



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