Distance measurement systems using lasers and their. Advantages of electronic measurement the advantages of an. Edm is a surveying instrument used to measure the distance electronically. Development of electronic distance measuring edm equipment is presently aimed at. The edm emits a beam of infrared light that is modulated at a controlled rate. Every distance is measured twice so that at both ends the instrument is used as the master instrument. Great emphasis is placed on the understanding of measure ment principles and on proper reduction and calibration pro cedures.
During use, the light beam is emitted from the edm, reflected off a prism or target held at a point to be mapped, and bounced back to the edm. Electronic distance measuring instruments sciencedirect. Measurement using ultrasonic sensors is one of the cheapest among various options. Electronic distance measurement page 1 electronic distance measurement electronic distance measurement, aka edm, is used in eight field events. It also provides coverage for some other courses, including foundation bridging courses which require the study of electrical and electronic engineering. In this method instruments are used to measure distance that rely on propagation, reflection and reception of electromagnetic waves like radio, visible light or infrared waves. Edm instruments are classified according to the type of carrier wave employed. Reflectorless laser distance measurement gim international. Calibration of electronic distance measurement device edm calibration with 1m length take. Electronic distance measuring tools laser, ultrasonic. At the same time, it is a comprehensive refer ence book for all surveyors as well as for other professionals and scientists who use electronic distance measurement as a measuring tool. Electromagnetic distance measurement edm definition the electronic distance measurement instrument edm is a relatively new development in the field of surveying. Instruments based on radio waves are generally called microwave instruments.
It is excellently suited as a text for undergraduate and graduate students and an invaluable reference for practicing surveyors, geodesists and other scientists using edm as a measuring tool. Forensic science electronic distance measuring edm. Subject in a descriptive manner with previous year gate questions discussed content whole syllabus of. Electronic distance measurement instrument types, functions. An electronic distance measurer edm can be used to place objects or points in three dimensions in relation to the unit. The accuracy of measurement varies from 5 mm to 10 mm per km measurement. Instruments should only be checked under favorable conditions.
Pdf calibration of electronic distance meters researchgate. It is excellently suited as a text for undergraduate and graduate students and an invaluable reference for practicing surveyors, geodesists and other scientists. Mar 23, 2017 electronic distance measurement edm 1. Electronic distance measurement edm is a fundamental feature of modern surveying total stations. Recent improvements in electronic distancemeasuring equipment have made it possible to obtain higher degrees of accuracy in surveys for mapping. Abstract electromagnetic distance measurement edm instrument requires a calibration. Forensic science electronic distance measuring edm device. To simplify the procedures to obtain accuracy in surveying, the electronic distance measuring method was introduced. Total station measurements and their precision and. Calculated industries digiroller plus iii 6575 measuring wheel.
The waves are reflected from another device at the other end back to the transmitter. It is an electronic transit theodolite integrated with electronic distance measurement edm to measure both vertical and horizontal angles and the slope distance from the instrument to a particular point, and an onboard computer to collect data and perform. Be able to perform simple electrical measurements of voltage, current, and resistance, as well as more sophisticated, scientific electrical measurements, master handheld and more accurate stationary multimeters and understand their differences, have some knowledge of use of ac signals, ac generators, and an oscilloscope. Electronic distance measurement an introduction jean m. Series in sensors includes bibliographical references and index.
Abstract distance measurement of an object in the path of a person, equipment, or a vehicle, stationary or moving is used in a large number of applications such as robotic movement control, vehicle control, blind mans walking stick, medical applications, etc. This asynchronous method requires multiple measurements to obtain a range by taking multiple bearings instead of appropriate scaling of active pings, otherwise the system is just capable of providing a simple bearing from any single measurement. What is the abbreviation for electronic distance measurement. In recent years, there has been a considerable progress of optical measurement systems through the understanding of basic. Notes on electronic distance measurement mygeodesy. Application of electronic distance measuring equipment in. Material presented here about electronic distance measuring equipment, electronic positioning systems, laser equipment, and global positioning systems gps equipment is general in nature and is not meant to replace the manufacturers operations handbook. The sensitivity of measurement is therefore the slope of the straight line drawn on fig. A total station ts or total station theodolite tst is an electronic optical instrument used for surveying and building construction. An electrical or electronic signal can be amplified, filtered, multiplexed, sampled and measured. Apr 09, 2017 to watch complete measurement course and all electrical eng.
The national geodetic surveys ngs electronic distance measurement instrumentation edmi calibration base line cbl program, hereafter referred to as the cbl program provides support to the edmi user community in establishing accurate and conveniently located cbls for efficient, routine testing of equipment. When the satellite navigation receiver is locked onto and tracking orbiting navigation satellites, the highly precise cesiumrubidium clocks. You should already understand the process of transforming the slope lengths as measured by the edm into horizontal distances as required for drawing plans. Distance measurement by electronic method based on hardwired algorithm relay on propagation, reflection and subsequent reception of electromagnetic wave electronic angle measurement combined the function of. Electronic distance measurement electronic distance measurement edm error. Electronic distance measurement wavelength infrared. Since the introduction of edm, the instrument size and power consumption have been reduced, and the precision and speed of measurement have been improved. Electronic distance measurement free download as powerpoint presentation. Electronic distance measuring instrumentation calibration. View and download sonin 10045 multimeasure 45 reference manual online. Edm electronic distance meter,applications,advance survey instrument. Advantages of electronic measurement the advantages of an electronic measurement are 1. Download the app today and get unlimited access to books, videos, and live training.
Instruments using light or ir waves are classified as electrooptical instruments. Fundamental electrical and electronic principles contains 349. Pdf the establishment of an electromagnetic distance. Chapter 3 surveying equipment, measurements and errors. Electronic distance measuring method edm basic civil. An electronic distance measurement edm instrument is calibrated on a baseline to. The electronic distance measurement instrument edm is a relatively new development in the field of surveying. Electronic distance measuring edm instruments introduction edm are now the prime measuring device for land surveyors and others. Total station surveying instrument combining electronic distance measurement equipment edme with a digital theodolite and electronic data recording. Mar 10, 2018 edm electronic distance meter,applications,advance survey instrument slideshare uses cookies to improve functionality and performance, and to provide you with relevant advertising. Important operations of total station distance measurement. Electronic distance measuring instrument is a surveying. The experiment was carried out at campus of the autonomous university of sinaloa uas in culiacan, mexico.
Measuremeter revolution electronic distance measuring wheel for metric and imperial measurment. Here the electronic distance measuring equipment and a reflector are necessary to carry out the survey. The waves are reflected from another device at the other end back to the. Using electronic distance measurement instruments in ndt and.
If you continue browsing the site, you agree to the use of cookies on this website. Basic working principles of electronic distance meters. Ranging is the term applied to distance measurement with moving objects. Electronic distance measurement instrument types, functions, uses. Feb 10, 2017 calibration of electronic distance measurement device edm calibration with 1m length take.
It presents a comprehensive treatment of the operation, performance, applications, and limitations of both digital and analog instruments, normally encountered in an electronics laboratory. In most events, a tape measure is used to make the measurements, but the process of. A combined satellite positioning and electrooptical total station system includes a reference oscillator that provides local oscillator signals for a satellite navigation receiver and a precision frequency source for use by an electronic distance meter. Us7023531b2 laser distance measuring device with phase. Take oreilly online learning with you and learn anywhere, anytime on your phone or tablet. This manual has several features which make it easy to use online. Total station in surveying operation, uses and advantages.
Electronic distance measurement this text gives an uptodate introduction into. Distance measurement systems using lasers and their applications. The electronic measurements and instrumentation notes pdf emi pdf notes book starts with the topics covering performance characteristics, ramp type, staircase ramp, wheat stone bridge, block schematic of cro, dual trace, strain gauges, flow measurement, flow measurement, etc. A total station ts or total station theodolite tst is an electronicoptical instrument used for surveying and building construction. Electronic instrumentation and measurements is designed as a textbook for undergraduate students of electrical, electronics, and instrumentation disciplines. The 5505e measuremeter revolution is an electronic measuring wheel that can be set to measure in either metric or imperial units at the touch of a button.
Electronic distance measuring tools home surveying electronic distance measuring tools. Electronic distance measuring edm instrument is a major part of total station. Electronic distance measuring edm instruments introduction. Edm is also used routinely for measuring field event performances and checking the heights of the bar in the high jump and pole vault events at major track and field competitions. Edm electronic distance meter,applications,advance survey instrument slideshare uses cookies to improve functionality and performance, and to provide you with relevant advertising. New post fundraising results, improved mobile version, your uploads page and minisurvey in our blog. Edm abbreviation stands for electronic distance measurement.
Measures horizontal and vertical angles and slope distance from which horizontal distance is calculated. Electrical measurements emphasising simple methods and instruments, materials aspects, electrochemistry, and. To watch complete measurement course and all electrical eng. Electronic measurements and instrumentation pdf notes. Electronic distance measurement edm instruments, such as laser trackers, total stations, and handheld laser distance meters, have been used in a limited number of nondestructive testing ndt and structural health monitoring shm applications attempting to measure bridge deflections and vibrations. Material presented here about electronic distancemeasuring equipment, electronic positioning systems, laser equipment, and global positioning systems gps equipment is general in nature and is not meant to replace the manufacturers operations handbook. This surveying instrument is used in triangulation to measure the. The instrument sends out a beam of light or high frequency microwaves from one end of line to be measured, and directs it towards the far end of the line.
Electronic distance measurement edm equipment became commercially available after world warii and has since become very important to the surveying, navigation and scientific communities. Material presented here about electronic distancemeasuring equipment, electronic. Reflectorless electronic distance measurement edm enables the measurement of distances of up to hundreds of metres without needing to access the target. Because of the different structure of these two types of instruments, they will be discussed separately. Electronic distance measurement in general is a term used as a method for distance measurement by electronic means. Sonin 10045 multimeasure 45 reference manual pdf download. May 2005 surveying equipment, measurements and errors 3.
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