27-02-2012, 02:47 PM
hi...
how are you?
27-02-2012, 02:47 PM
hi... how are you?
01-03-2012, 07:48 PM
can anyone give the total detail including circuit of automatic railway gate control system
02-03-2012, 11:07 AM
to get information about the topic MICROCONTROLLER BASED AUTOMATIC RAILWAY GATE CONTROL full report ppt and related topic refer the link bellow https://seminarproject.net/Thread-microc...ull-report https://seminarproject.net/Thread-microc...?pid=32748 https://seminarproject.net/Thread-automa...ull-report
11-08-2012, 03:50 PM
MICROCONTROLLER BASED AUTOMATIC RAILWAY GATE CONTROL
ABSTRACT The Indian Railway is the most widely covering communication means in Indian environment. The railway track runs through out the Indian city and village. There are millions of level crossings gates set up at the side railway track. The level crossing gates, which are located mostly at the city location they are managed manually, where as there are many level crossings at the country side, which are not attended due to man power problem. In this project an effort is made to automate the level crossing gates. The controller will sense the arrival of the train and starts alarming and after a while the gate starts closing. Once the train thoroughly covers the level crossing zone the gate reopens. The objective of the project is to automate the level crossing gates at the countryside to avoid accident at the railway level crossing. And some obstacle sensors are connected at the front and back side of the train to avoid train to train accidents. POWER SUPPLY:- In this power supply we are using step-down transformer, IC regulators, Diodes, Capacitors and resistors. Explanation: - The input supply i.e., 230V AC is given to the primary of the transformer (Transformer is an electromechanical static device which transform one coil to the another without changing its frequency) due to the magnetic effect of the coil the flux is induced in the primary is transfer to the secondary coil. The output of the secondary coil is given to the diodes. Here the diodes are connected in bridge type. Diodes are used for rectification purposes. The output of the bridge circuit is not pure dc, some what rippled ac is also present. For that capacitor is connected at the output of the diodes to remove the unwanted ac, capacitor are also used for filtering purpose. The both (-ve) terminal of the diode (D2 & D3) is connected to the (+ve) terminal of the capacitor and thus the input of the IC Regulator (7805 & 7812). Here we are using Voltage regulators to get the fixed voltage to our requirements. IR Transmitter ABOUT INFRARED We experience infrared light every time we feel the heat of the sun on our skin or the warmth of a camp fire. Technically, what we are experiencing in these instances is thermal infrared light. Scientists call waves of electromagnetic energy that travel through space light. We tend to think of light as only the radiant energy that we see with our eyes. But the light we can detect with our eyes is a very tiny fraction of all the types of light that exist. Infrared light is one type of light that is invisible to us. Gamma rays, X-rays, ultraviolet light, microwaves and radio waves are other types of invisible light. All of these rays and waves are the same type of electromagnetic energy. They are different only because the length of their waves is different. When we see something by visible light, our eyes allow us to distinguish the light of different waves as different colors. The waves that are short are blue and the waves that are long appear as red. We can't really see the waves, we only see the colors that our mind creates to help us interpret the world. Every color has a distinct wavelength. For example, violet light can be seen at light wavelengths of around 0.4 micron(*) and yellow light is made up of waves that are 0.6 microns long. Reddish colors begin at wavelengths of about 0.65 microns. Your eyes cannot see light that has a wavelength longer than 0.7 microns. Code Memory Code memory is the memory that holds the actual 8051 program that is to be run. This memory is limited to 64K and comes in many shapes and sizes: Code memory may be found on-chip, either burned into the Microcontroller as ROM or EPROM. Code may also be stored completely off-chip in an external ROM or, more commonly, an external EPROM. Flash RAM is also another popular method of storing a program. Various combinations of these memory types may also be used--that is to say, it is possible to have 4K of code memory on-chip and 64k of code memory off-chip in an EPROM. When the program is stored on-chip the 64K maximum is often reduced to 4k, 8k, or 16k. This varies depending on the version of the chip that is being used. Each version offers specific capabilities and one of the distinguishing factors from chip to chip is how much ROM/EPROM space the chip has.
07-04-2013, 12:03 PM
i want MICROCONTROLLER BASED AUTOMATIC RAILWAY GATE CONTROL ppt plz sen me my gmail
01-05-2013, 02:40 PM
Microcontroller based Automatic railway gate control
The Present Scenario Generally the railway crossings are of two types 1.Manned 2.Unmanned A lot of time is wasted due to this particular system. Many errors occur due to the manual operation of the entire system. The Automatic railway gate The arrival and departure of trains is done by the sensor set. The automatic railway gate has two main advantages: 1. The reduction of time for which the gate is being kept closed. 2. To provide safety for the road users by reducing the accidents as there is no scope of human errors in this case. The Detailed Description Initial Signal Display Train Arrival Detection Warning for Road Users Sensing For Vehicles Gate Closing Operation Signal For Train Train Departure Detection Gate Opening Interrupt Working of the Sensor set All the above 3 sensors are ANDed together and they form a single sensor set. So to trigger the entire set, we need to trigger all the above sensors. The reason why we go for this type of sensor set is to make it triggered ‘only’ by a train thus this increases the reliability of the system. Microcontroller This forms the brain of the entire system. Atmega 328 using arduino platform is used for the programming of this logic. Microcontroller “Atmega 328” performs the complete operations of Sensing Closing of the gate Opening of the gate operation done by software code written on the controller. Algorithm 1: Make initial settings of the signals for the train and road users. 2: Check for the arrival of the train in either direction by the sensors. If the train is sensed go to 3 otherwise go to step 2. 3: Make the warning signal for the road users and set the signal for the train. 4: Check for the presence of any obstacle using sensors. If no obstacle, go to step5 otherwise repeat step4. Advantages Prevention of accidents inside the gate. Reliable machine, which operates the railway gate even without gatekeeper which makes it useful for operation at unmanned crossings. Power supply for the motor operation and signal lights is required. Battery which is charged by means of a solar cell can be used in remote areas where the power supply can’t be expected. Disadvantages To establish the entire network it is quite a costly task. Since these are the issues of the government cost doesn’t matter a lot. The Arduino board is a delicate device so it has to be handled carefully. Conclusion Avoids manual errors & provides ultimate safety to road users. Gatekeeper not necessary and automatic operation of the gate through the motor. The mechanism works on a simple principle.
29-09-2015, 10:02 PM
very very super
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