How does it work? | Banknote detector

Date:

2017-08-10 18:00:06

Views:

4185

Rating:

1Like 0Dislike

Share:

How does it work? | Banknote detector Source:

To Manufacture counterfeit money began in the days of Ancient Egypt. With the advent of banknotes, the task of the counterfeiters has been simplified, and States have begun to develop special protections that would be difficult to forge. Some of them have watermarks appeared in Italy in the 13th century. Presumably their founder is Jacques Legrand Amable first used watermarks on postage stamps. In the 80s of the last century in the United States of America introduced the first detector of banknotes. How they work — this was in today's issue!

So, viewing detectors of banknotes intended for visual authenticity control of banknotes. This type of detectors allows to authenticate banknotes of absolutely any country of the world and of any denomination. The fact that the screening detector only renders the protective signs of banknotes, and the decision on whether it is true or not, adopts operator. Therefore the quality of the inspection depends on the qualifications and experience directly who conducts the study notes. On the one hand, such a device turns out the most simple and cheap, and with another — requires certain skills.

Depending on the type of illuminator and method of authenticity control, viewing detectors are divided into 3 types: ultraviolet, infrared and universal.

The Most simple devices are UV detectors. They are no longer a serious obstacle to counterfeiters and is able to "filter out" only the poor quality fakes. UV detectors is one or more UV-lamps, often with a magnifying glass and a scale grid, and capable of detecting the luminescent image, the threads and fibers of banknotes in ultraviolet light lamps. UV protection provided by the introduction of banknotes in the paper with special substances and paints that do not glow in the ultraviolet range. When checking banknotes using ultraviolet detector original bill would not glow, and fake, in contrast, will reflect the ultraviolet radiation.

Ultraviolet detection is used in automatic detectors for banknotes as well as in machines for money, which will be discussed in the next issue, and play the role of the first – the coarse filter.

The Most reliable to date devices to identify the fakes are infrared detectors. The fact that the technology of applying paint and its composition are too expensive, therefore counterfeiters unprofitable to use of infrared markers in the production of counterfeit banknotes. Infrared detectors contain IR illumination of the working area, the camera with the appropriate filter and display that displays the image from the camera. Depending on the currency type and its denomination in the infrared range see individual parts of the image of the banknote, which reflect infrared rays. Those areas in which the special label applied was not, in the infrared range will not be displayed. Visualization of the label is performed on the integrated display of the detector.

Also the IR detector allows to determine the bills of the special security feature called "M", which is a dye having a different absorption coefficient for different parts of the spectrum in the IR region. To control spetselement "M" used two groups of illumination with different wavelengths, which are switched on alternately. The element "M" it looks flashing.

There are also combination detectors that combine both infrared and ultraviolet sensors. Additionally they can be equipped with detectors of magnetic labels. Combined devices are more reliable but have a high cost.

Recommended

Mystery of the Sargasso sea, and why there were dead ships

Mystery of the Sargasso sea, and why there were dead ships

At the time, in the Sargasso sea lost a lot of ships. Almost all mystical place, about which people say, giving them a mysterious halo, are on the water. When ”ends”, the disappearances do seem very strange and inexplicable. One of the places that ar...

An air leak site has been found on the ISS. What's next?

An air leak site has been found on the ISS. What's next?

Air leak occurs in Russian station module Inside the International Space Station live astronauts from different countries and all of them need oxygen. The air needed for the life of the crew is produced by special equipment, but the tightness of the ...

Why can thinking about death make life happier?

Why can thinking about death make life happier?

Awareness of one's own mortality can be a liberating and awakening experience How do you feel about the idea of death? How often do you think about it and what emotions do you feel? Many of us have been pondering these questions lately. The pandemic ...

Comments (0)

This article has no comment, be the first!

Add comment

Related News

How does it work? | Facial recognition system

How does it work? | Facial recognition system

Man is able to recognize faces of other people due to the area of the brain on the border of the occipital and temporal lobe fusiform gyrus. People are learning to recognize faces from birth and at four months can clearly distingu...

How does it work? | ATM

How does it work? | ATM

a prototype of the first ATM machine was invented by the American scientist Luther Simpana in 1939. The device gave out cash, but could not deduct them from the account: the device was not associated with the Bank. In 1967 in Lond...

Astronomers have caught a strange radio signal from the stars is 11 light years from us

Astronomers have caught a strange radio signal from the stars is 11 light years from us

Astronomers reported the discovery of "strange signals" going in the direction from the small, dim stars located at about 11 light years from Earth. Signals were received on may 12. They were caught, the Arecibo Observatory's gian...

How does it work? | Speech synthesis

How does it work? | Speech synthesis

we talked about speech recognition, today we will discuss the inverse problem. So how does speech synthesis, or, in other words, converting arbitrary text to voice — this was in today's issue! http://www.youtube.com/watch?v...

How does it work? | Speech recognition

How does it work? | Speech recognition

the First device for speech recognition appeared in 1952, it was able to understand spoken human figures. 40 years later, the first commercial software for recognizing human speech. They were designed for people who, because of ph...

How does it work? | Iris scanner

How does it work? | Iris scanner

the Technology of scanning an iris of the eye was first proposed in 1936 by ophthalmologist Frank Bursh. He said that the iris of each person is unique. The probability of coincidence is about 10 to the minus 78 degrees, which is ...

How does it work? | Fingerprint scanner

How does it work? | Fingerprint scanner

identification of the fingerprint — one of the most reliable ways to confirm the identity of the person. On the accuracy of this method is second only to the retinal scan and DNA analysis. Fingerprint — it's nothing li...

How does it work? | Computer mouse

How does it work? | Computer mouse

History of computer mouse originates 9 December 1968, when it was presented at the exhibition of interactive devices in California. The patent for this gadget got Doug Engelbart 2 years later. The first computer, the set which inc...

How does it work? | Keyboard

How does it work? | Keyboard

the History of computer keyboards goes back more than 150 years. The prototype of the modern keyboard was a typewriter, which appeared in the mid-nineteenth century. First, the keys with letters placed alphabetically. However, ove...

How does it work? | Touchpad

How does it work? | Touchpad

Touch panel, or another touchpad, was invented in 1988 by George Gerpheide. Then, Apple has licensed the project and, since 1994, began to use in the PowerBook laptops. Since the touchpad is the most common control device a laptop...

How does it work? | SSD

How does it work? | SSD

In today's issue of the scientific-educational programs «How does it work?» we'll talk about the SSD. Pleasant viewing! http://www.youtube.com/watch?v=tg9qRyCKbN4...

#trends | the Internet of things

#trends | the Internet of things

Internet of things — another fashionable phrase in recent years can be heard more and more often. Actually, it appeared much sooner than you think, but only now the potential of this phenomenon seriously wonder about his pro...

How does it work? | 5G network

How does it work? | 5G network

In today's issue of the scientific-educational programs «How does it work?» we will talk about how the 5G network. Pleasant viewing! ...

How does it work? | Wi-Fi in the plane

How does it work? | Wi-Fi in the plane

In today's issue of the scientific-educational programs «How does it work?» we will talk about how Wi-Fi on the plane. Pleasant viewing! http://www.youtube.com/watch?v=ytmb6jmjOXI...

What we will show at the Victory parade — 2017?

What we will show at the Victory parade — 2017?

the Traditional parade of the great Victory, held may 9 in the heart of our country on the red square of Moscow, allows you to personally see the latest innovations vysokotekhnologichnoi military equipment of domestic production. ...

How does it work? | Wi-Fi in the subway

How does it work? | Wi-Fi in the subway

In today's issue of the scientific-educational programs «How does it work?» we will talk about how Wi-Fi in the subway. Pleasant viewing! http://www.youtube.com/watch?v=xSmsQolrPWs...

How does it work? | Navigator

How does it work? | Navigator

In today's issue of the scientific-educational programs «How does it work?» we will talk about how to operate a mobile navigation how the system route, measure and take into account traffic jams. Pleasant viewing! http:...

How does it work? | Cameras commit traffic violations

How does it work? | Cameras commit traffic violations

In today's issue of the scientific-educational programs «How does it work?» we will talk about the cameras fixing violations of traffic rules, how they work, measurement errors, and more. Pleasant viewing! http://www.yo...

#it is an interesting | Most unusual winter sports

#it is an interesting | Most unusual winter sports

Today we present to your attention the 183rd episode #it is an interesting, which we'll talk about the most unusual winter sports. Namely, we will focus on Snowkiting, winter equestrian Polo, brumble and much more. Pleasant viewin...

How does it work? | Intelligent video surveillance

How does it work? | Intelligent video surveillance

In today's issue of the scientific-educational programs «How does it work?» we talk about intelligent video surveillance: the principle of operation of intelligent systems for the analysis and identification of objects, ...