02-05-2014, 11:05 AM
Development And Design of Top Rail Irregularity Detection System And Intimation Early To The Train
Development And Design.ppt (Size: 725.5 KB / Downloads: 13)
Paper Highlights
In this presentation, we are going to present our first review on the project “DEVELOPMENT AND DESIGN OF TOP RAIL IRREGULARITY DETECTION SYSTEM AND INTIMATION EARLY TO THE TRAIN”.
The contents to be explained as follows:
Objective
Introduction
Existing system
Proposed system
Hardware and Software used
Block Diagram – Explanation
Working Principle
Objective
The main aim of the project is to detect the faults in the railway tracks
using photo-sensors, metal detectors and GPS.
By this project, we can find out the crack in the railway track and intimate
to the nearby station or train through ZIGBEE.
When the fault is identified through the GPS, automatically the speed of
the train will be reduced and stopped.
So, by this project the major accident will be avoided and the life of the
passenger’s will be rescued.
Introduction
Track irregularity is one of the major reasons that cause noise and the
changes of the wheel-rail interaction.
With the increase of urban passenger flow, new demands on the transit volume of the metro vehicle is put forward to narrow departure interval, rail surface irregularity is worse and worse.
Not only did it exacerbate the harm to track structure, but also it exceeded the limit of geometry and affected the service life of rail, and even the traffic safety.
Existing System
At present, rail irregularity detection technologies are mainly limited to three methods:
Low efficiency,
great measurement error.
manual inspection
DISADVANTAGES:
Less accuracy.
More time.
Requires special equipments.
High cost.
Requires a professional people.
Proposed System
To solve the problems above, this article presents a system design based
on virtual instrument to detect track irregularity.
The system mainly uses non-contact detection principle in combination
with three sensors to achieve online Real-time detection of obstacle and
bomb detection.
Research on short-wave irregularity detection system of new rail upper
surface is able to provide a scientific basis for rail grinding plan and
therefore help prolong its service life, improve the comfort of passenger
and the traffic safety.
Advantages:
Early detection of track faults notification
High precision
Simple operation
Better performance than other methods
Low cost
Applications:
This system is mainly used to avoid the major accident in the Railway Network.
Through this system, the lives of the passengers will be saved, who are traveling in the train.
By this system, faults will be detected earlier and it will be rectified as soon.
Bombs also detected through the Metal Detectors by this system.
MAX232
The MAX232 IC is used to convert the TTL/CMOS logic levels to RS232 logic levels during serial communication of microcontrollers with PC.
The controller operates at TTL logic level (0-5V) whereas the serial communication in PC works on RS232 standards (-25 V to + 25V).
This makes it difficult to establish a direct link between them to communicate with each other.
The intermediate link is provided through MAX232.
It is a dual driver/receiver that includes a capacitive voltage generator to supply RS232 voltage levels from a single 5V supply.
Each receiver converts RS232 inputs to 5V TTL/CMOS levels.
These receivers (R1 & R2) can accept ±30V inputs.
The drivers (T1 & T2), also called transmitters, convert the TTL/CMOS input level into RS232 level.
Station Receiver Side
The analyzed information is transmitted to the station through ZIGBEE module.
The MAX232 IC is used for providing voltage compatibility between microcontroller and ZIGBEE controller.
In train, the ZIGBEE will receive the values and is connected to controller through RS 232 cable as like used in transmitter side and connected to system through cable.
If any abnormal value received by the sensor from transmitter, the train gets stopped, for that DC motor is used for prototype application.