Older methodologies that use a set of known information usually distance or target sizes to make the measurement. While some capacitance exists between any two electrical conductors in proximity in a circuit, a capacitor is a component designed to add capacitance to a. Electronic distance measurement edm by sabri safee on. Pdf the theoretical part of the paper is concerned with length measuring methods, especially with. Accuracy analysis and calibration of total station based on. Electronic distance measurement can be done by instruments like geodimeter, tellurometer or distomat etc. Electronic distance measuring tools home surveying electronic distance measuring tools. Electronic distance measurement page 1 electronic distance measurement electronic distance measurement, aka edm, is used in eight field events. Electronic distance measuring instruments sciencedirect.
Use the 9 leveling screws a and c to adjust the plate level 12 so that the air bubble is exactly in the middle. A read is counted each time someone views a publication summary such as the title, abstract, and list of authors, clicks on a figure, or views or downloads the fulltext. Electronic distance measurement instrument types, functions, uses. It is excellently suited as a text for undergraduate and graduate students and an invaluable reference for practicing surveyors, geodesists and other scientists. By scott nguyen, integrated sales and support foxit phantompdf makes it easy to measure distances and areas of objects in pdf documents with our measure tools.
Electronic distance measurement an introduction jean m. Electronic distance measurement, aka edm, is used in eight field events. Tacklife hd60 laser measure 196 ft aaa batteries soft portable bag hand strap user manual. Electronic distance measurement edm by sabri safee on prezi. Edm abbreviation stands for electronic distance measurement. It is a passive electronic component with two terminals. 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 measuring instrument is a surveying instrument for measuring distance electronically between two points through electromagnetic waves.
Dan didalam pengolahan hasil pengukuran edm harus memperhatikan beberapa hal. Custom electronics and a microprocessor then convert elapsed time into a distance measurement and display it on the lcd. Edm electronic distance meter,applications,advance survey instrument. Edm electronic distance measurement adalah alat yang digunakan untuk menentukan panjang, menggunakan perubahan fase yang terjadi sebagai energi elektromagnetik yang diketahui panjang gelombangnya. Distance measuring device is a device that is used to measure the length. 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. Gunung merapi adalah gunung berapi di bagian tengah pulau jawa dan merupakan salah satu gunung api teraktif di indonesia. Rueger is currently an associate professor at the school of geomatic engineering, university of new south wales, sydney, australia.
Ddm or direct distance measurement this is mainly done by chaining or taping. A decent book, covers much of the basic principles in electronic distance measurement. Pdf calibration of electronic distance meters researchgate. Active methods use unilateral transmission and passive reflection. In most events, a tape measure is used to make the measurements, but the process of getting accurate measurements is troublesome, time consuming and not always entirely accurate.
Public land survey system foundation 2009 manual of surveying instructions for the survey of the public. Microwave systems range up to 150 km wavelength 3 cm not limited to line of sight unaffected by visibility light wave. Electronic distance measuring edm instruments introduction edm are now the prime measuring device for land surveyors and others. Electronic distance measurement wavelength infrared. 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. Geodimeter is geodetic distance meter developed based on a modulated light beam. What is the abbreviation for electronic distance measurement. How to measure distances and areas in pdf documents.
A free powerpoint ppt presentation displayed as a flash slide show on id. Electronic instrumentation and measurements is designed as a textbook for undergraduate students of electrical, electronics, and instrumentation disciplines. Electronic distance measuring tools laser, ultrasonic. The first edm instrument called geodimeter was developed in sweden in the year 1948. Test the performance of total station by using free station method from a number. Reflectorless edm technology uses phase measuring or pulsed lasers to measure targets of a reflective and. The sensitivity of measurement is therefore the slope of the straight line drawn on fig. Frame class stability na, frame type welded, capacity 2000kn, max vertical clearance 340mm, max horizontal clearance 325mm, platen sizes lower, upper 222mm dia, max ram travel 50mm, samples. Electronic distance measurement free download as powerpoint presentation.
The edm emits a beam of infrared light that is modulated at a controlled rate. The hhdm electronic distance measurement tool sends out narrow beams of sound waves that bounce off solid objects back to the handheld receiver. Electronic distance measuring instrument is a surveying instrument for measuring distance. It is an electronic transit theodolite integrated with electronic distance measurement. Perjalanan gelombang dari satu ujung garis ke ujung yang lain dan kembali. All distances measured by a particular edm instrument and reflector combination are subject to a constant error. These tools are especially useful when youre creating manuals, instructional guides, forms, and computeraided design cad drawingsor when you want to measure areas of any document before sending to a professional printer. Electronic distance measurement edm is a method of determining the length between two points, using phase changes, that occur as electromagnetic energy waves travels from one end of the line to the other end. The standard is considered of critical importance for delaysensitive applications, such as voice over wireless ip. 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. Electronic distance measurement edm is a fundamental feature of modern surveying total stations.
The hhdm is the perfect accessory for omegas os530 infrared pyrometer. Metode edm metode ini dapat juga digunakan dalam pengamatan deformasi gunungapi. Surveying or land surveying is the technique, profession, art and science of determining the. Measurement number me as u r e m ent r a n g e range uclr msa short term stability chart 0. Electronic distance measurement could be covere d up by both direct and indirect mea s urement but more often it is detached separately because of its advanced technology and great importance. Methods for measuring distances electric distance measurement edm distances are measured electronically by determining the number of full and partial waves of transmitted electromagnetic energy that are required in traveling the distance between the edm and a prism.
Alat mengukur jarak adalah peralatan yang digunakan untuk mengukur jarak. Before edm devices, distances were measured using a variety of means. Cara penggunaan edm adalah dengan meletakan edm pada suatu titik dan reflektor diletakkan pada titik yang lain. Pengukuran secara manual akan sedikit rumitjikajarak. Prinsip kerja edm electronic distance measurement adalah dengan memancarkan sinar reflektor jarak yang akan memantulkan kembali sinyal tersebut ke edm. Electronic distance measurement physics and application to structural engineering research j. Reflectorless electronic distance measurement listed as redm. It is reflectorless electronic distance measurement. Tacklife hd60 classic laser distance measure 196 feet quick and accurate measure to easy your.
Geodesy, metrology, electronic distance measurement, electronic distance meter, reflecting. A total station ts or total station theodolite tst is an electronicoptical instrument used for surveying and building construction. 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. The second instrument for edm was designed and developed in africa in the. Electronic distance measurement edm linkedin slideshare. As long as our distances are shorter than 10 m twoway travel, we can measure with millimeter precision as long as both the wave generator and phase detector electronic can operate to 4 significant figures. Tell a friend about us, add a link to this page, or visit the webmasters page for free fun content. Electronic distance measurement measuring distance. Electronic distance measurement edm is a method of determining the length between two points using electromagnetic waves. Forensic science electronic distance measuring edm. Reflectorless electronic distance measurement how is. The waves are reflected from another device at the other end back to the transmitter. Howerver you can also get some good free information online, like here.
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