Presentation on universal axel counter by cel

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Transcript of Presentation on universal axel counter by cel

Industrial Training Report (Bhushan Steel Pvt. Ltd.)

Industrial Training Presentation (Central Electronics Limited)

Name . Ramakant TyagiRoll No. 1219431055Session . 2012-16

Department of Electronic & Communication Engineering H.R INSTITUTE OF TECHNOLOGY , GHAZIABAD(U.P)

COMPANY PROFILETYPE :PUBLIC SECTOR UNDERTAKING(PSU)

FOUNDED IN : 1974

HEADQAURTERS : NEW DELHI, INDIAKEY PERSONS : Dr. NALIN SINGHAL (Chairman & Managing director)

INDUSTRY : ENGINNERINGPRODUCTS: Solar Photovoltaic, Railways Electronic, Ceramics WEBSITE : www.celindia.co.in

Cel Unit and LocationCentral Electronics Limited (CEL) manufacturing unit is located inSahibabad,district Ghaziabadin state ofUttar Pradesh. and has been producing Solar Photovoltaic, Railways Electronic, Ceramics .

CEL has developed a number of critical components for strategic applications and is supplying these items to Defence Industry. CEL is ISO-9001:2008 & ISO-14001:2004 certifications company, backed by a strong group of high dedicated and well qualified R&D team and has a production plant with an established capacity of 13MW per year

Axle Counter

Anaxle counteris a device on arailwaythat detects the passing of atrainbetween two points on a track.

A counting head (or 'detection point') is installed at each end of the section, and as each trainaxlepasses the counting head at the start of the section, a counter increments.

Axle CounterCOUNTS AXLESCOUNTS AXLES IN AND OUT OF SECTION

CLOSE LOOK AT TRACK DEVICE INSTALLATION

Transmitter coilsReceiver coilsBaseClamp

INTRODUCTION CONA detection point comprises two independent sensors, therefore the device can detect the direction and speed of a train by the order and time in which the sensors are passed. As the train passes a similar counting head at the end of the section, the counter decrements. If the net count is evaluated as zero, the section is presumed to be clear for a second train.

Initially axle counters were imported from Germany to gain experience and to evaluate their suitability for adoption on Indian Railways.

Mark-I model was introduced in Indian Railways after extensive laboratory and field trials under various conditions. Later stage based on the field feedback, two models of axle counters known as single entry/exit (RDSO Mark-II) axle counter and Multi entry/exit axle counter were emerged and after extensive laboratory and field trials under various conditions, the design was finalized and commercialized through private sector as well as public sector

Based on the feedback from field, a new axle counter has been developed by RDSO, known as UNIVERSAL AXLE COUNTER. It is universal system up to four entry / exit points of one section of straight road or Points zone portion and number of entry/ exit points are easily convertible at site as per the required application.

Track Device Assembly

COUNTING OF AXLESEarlier Axle counters only monitored the amplitude of the signal from detectors.

Present versions monitor both amplitude and phase. This gives additional discrimination between presence and absence of wheels

HOW IT WORKS AS TRACK CIRCUITIF AXLES IN NOT EQUAL TO AXLES OUT THEN SECTION OCCUPIED

IN = 50OUT = 0SECTION IS OCCUPIED

IN = 50OUT = 50SECTION IS CLEAR

IN = 50OUT = 40

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DETECTION OF DIRECTIONDetection of direction of movement is important and it is done by having two detectors adjacent to each other. Depending on the direction of movement the sequence of dips of the two detectors changes.

AB

ABDip of A precedes that of B

AB

ABDip of B precedes that of ATime

Signal

TYPICAL AXLE COUNTERINDOOR EQUIPMENTCARDFILEInput CardLogic CardOutput Card

Power supply

Advantages An axle counter system can cover a very long section up to 15 Kms.

It does not get affected either by flooding of track or poor maintenance of tracks unlike the track circuit, which is highly susceptible to these conditions.

Efficiency and safe working of axle counters does not depend up various track parameters and climate condition such as length, ballast condition, drainage, stray voltage and currents, track feed voltage and lead cables, etc. like track circuits.

Applications Axle counters have been finding more and more uses on modern safety signaling systems in railwaysThese are being used presently for the following :-

a) Automatic Signaling systems.b) Level-crossing warning system using axle counter.c) Monitoring of berthing tracks in station areas and yards.d) Intermediate Block Signaling in Double line sections .