smeminar no 1_[amar][1]

SEMINER TOPIC:- MODERN EQUIPMENTS.

NAME:-Mr,Amar Bharat Magar. [S.Y. Civil Engineering.] Prof:Mr,Hinge Sir.

MODERN EQUIPMENTS

• EDM-Electronic distance measurement equipment.

• Electronic theodolite.

• Total station.

INTRODUCTION

• By the 7970 relatively small,lightweight;& easy-to-use electronic distance measuring devices it is called EDM.

• The advance of technology of electronic components enabled the building of thedolites that measure angle electronically is called Electronic Theodolite.

• Combination of an electronic thedolite & electronic distance meter; & software running on external laptop,computer known as data collector called Total Station.

EDM• Meaurment of distance is accomplished with a modulated microve

• Genereted by a small solid state emitter within the instruments

• The modulation pattern in the returning singal is read & interpreted by onborad computer in the EDM

HAND HELD EDM• Very handy

• Cheap

• Can be used with accuracy

• of 10mm or so

• Rapid measurement

• Long range

• High accuracy

• Measurement of moving

• target

ELECTRONIC THEODOLITE• The electronic theodolites have optical system to scan both horizontal & vertical circles &

display them digiyally on a screeen

In EDM the beam of light is the carrier and which is reflectedback from mirror located at the other end. Such instrumentare less expensive because one active instrument and batteryare only needed at one end and instrument at other end issimply a reflecting mirror centered over ground centre mark

Principle.

Basic PrincipleA total station integrates the functions of a theodolite formeasuring angles, an EDM for measuring distances, digitaldata and a data recorder. All total stations have similarconstructional features regardless of their age or level oftechnology, and all perform basically the same functions

TOTAL STATION

FEATURES:-• Total solution for surveying work.

• Most accurate& user friendly.

• Measures distance & angle display coordinates.

• EDM is fitted inside the telescope.

• Digital display.

• On board memory to store data.

• Water proof.

• On board software are available.

COMPONENTS OF A TOTAL STATION• EDM

• Electronic theodolite

• On board Micro processor

• Data Collector

• Data storage

• Prisms

SPECIFICATIONS

• Range• Reflector less:3-70 meters

• Single prism:1-3000m

• Accuracy• Angle:1”-5”

• Distance:3mm(with prism)/4mm(with out)

• Data Storage:5000 points

• The LCD screen does not work well when it is cold

• Battery life is short

• Loss of data is an important consideration.

• Fully atomatic electronic Measurment.

• Digital display of staff reading & distance

• Data storage in instrument possible

ADVANTAGES & DISADVANTAGES OF TOTAL STATIONAdvantages disadvantages