Electronic boards operating principle. Types of interactive whiteboards

The computer is projected onto the surface of the interactive whiteboard. In this case, the board acts as a screen. You can work with the image projected onto the board, make changes and notes. All changes are recorded in the corresponding files on the computer and can be saved and later edited or copied to removable media. In this case, the electronic board works as an information input device.

The board can be controlled either using a special stylus or by touching it with your finger. It depends on what technologies were used to make the board.

The connection between the board and the computer is two-way, and the finger or pen (stylus, pen) of the interactive whiteboard works like a mouse.

Currently, interactive whiteboards are actively used in school classrooms as a means of computer lesson support, in training centers, and meeting rooms.

When working with an interactive whiteboard, the projector can be replaced with a document camera, which makes it possible to further diversify the learning process.

Interactive whiteboards there are forward and backward projection and differ according to the type of installation of the projector. For forward projection, the projector is located in front of the board; for rear projection, the projector is behind the board.

Most interactive whiteboards are front projection boards. To ensure that the projector beam does not interfere with the work of the teacher and students, it is recommended to use an ultra-short throw projector for working with the board, which can be mounted on a mount directly above the board.

There are interactive electronic boards active And passive.

Active The electronic board must be connected to a power source and to the computer using wires. Passive The electronic board does not contain any sensors on its surface and does not need to be connected. It does not need to be connected to a computer or projector, and there is no need to run cables across the entire classroom. It can be easily moved from one office to another.

The method of working with it depends on the technology on which the interactive whiteboard is created. The following technologies are used:

• Electromagnetic technology (active);
• Analog resistive technology (active);
• Ultrasound technology (passive);
• Infrared technology (passive);
• Microdot technology (passive);
• Laser technology (passive);
• Optical technology (passive);

Boards created using electromagnetic and resistive technologies must be connected to the computer and power source by wires.

On boards created using electromagnetic and laser technologies can only be worked with a special electronic marker. Board based resistive, ultrasonic and infrared technologies support operation both with a special marker and with any other object, such as a finger. Infrared and ultrasound technologies are often combined.

Board produced on the basis microdot technology, does not require a connection to a network or computer. The main working tool in the design of such a board is a stylus, which transmits all data to the computer using a Bluetooth transmitter built into it.

Notes

Links

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See what “Interactive whiteboard” is in other dictionaries:

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NDOL Zubrenok (Myadel district, Minsk region, territory National Park“Narochansky”, Belarus) National children's health camp of the Ministry of Education of the Republic of Belarus, a popular pioneer camp in the USSR... ... Wikipedia

Modern gadgets never cease to amaze us with new possibilities. They can be used to great advantage, especially when it comes to teaching children. One of these devices is the interactive whiteboard, a popular electronic tool that has brought working with a projector and computer to new level, which has gained great popularity in schools. Usage electromagnetic device makes learning much more interesting, and teachers receive expanded opportunities for visual demonstration new knowledge.

What is an interactive whiteboard

A touch screen the size of a large TV is a special electronic device called an interactive whiteboard. It only works in conjunction with a computer and projector. All three devices are connected to each other so that the image from the computer is displayed on the board. Simply touching the surface with a marker or finger allows you to work with the image on the screen as if you were working on a computer with a mouse.

Kinds

Interactive whiteboards differ in the way the projection device is installed. On forward projection boards, the projector is mounted in front of the screen, while the reverse variety means that the projector is installed behind it. The next important difference is active or passive electronic connection. The first means that the media board is connected to devices using wires. The second is completely independent and does not require installation of cables. What the device will be like depends on the technology of creation.

Possibilities

The multimedia environment opens up before us limitless possibilities for the exchange and receipt of information. Displayed on a touch screen, it becomes available to a large group of people at the same time. This is indispensable in the learning process and in business sphere when making presentations. When working with the device, you get the opportunity to:

• write and save information in separate files;
• use the touch toolbar;
• select, swap, group objects on the screen;
• in addition to static ones, demonstrate dynamic images, slides, videos;
• actively use electronic technologies and any information from the computer to create interactive lessons.

Principle of operation

Working with the screen is carried out depending on electromagnetic technologies. There are two varieties. One uses a finger, the other uses a stylus, or both. There are sensors on the surface of the screen that are responsible for determining touch points. Equipment with infrared sensors recognizes any object that comes close and perceives it, like a computer mouse. There is a variety of screens that are used with markers.

Buy an interactive whiteboard

These devices differ in the software installed on them. Programs determine job opportunities. Depending on who the board is intended for, purchase the appropriate device. Basic Basics the work is as simple as possible and adapted for any user. Selected varieties installed programs may require the development of special skills.

For school

The Classic Solution Dual Touch electronic system will successfully replace a simple blackboard and chalk. You can work on it in two ways - with your finger or with an electronic marker:

• Model name: Classic Solution V83;
• price: 33,000 rub.;
• characteristics: optical technology, dimensions - 1710 × 1240 × 36 mm (83"), active area - 80", weight - 15.7 kg, matte surface, anti-reflective, plug and play, transmission speed 120 points per second, unlimited touch time, works with Windows XP / Windows 7;
• advantages: thanks to Multi-touch sensor technology, 2 people can work simultaneously;
• cons: not found.

Another touch board is presented by the manufacturer Yesvision. It is based on an optical system. This technology is used to turn any object into a screen tool:

• Model name: Yesvision BS80;
• price: 38,000 rub.;
• characteristics: diagonal – 80", working surface – 155×112cm, not sensitive to pressure, supports two-touch operation, interface – USB 2.0, the package includes a pointer, wall mount, software;
• pros: work is done by hand or any opaque object;
• cons: not found.

Another popular model is produced by the American manufacturer Mimio. You can work with it not only as with a touch screen, but as with a regular magnetic marker board:

• Model name: Mimio Board ME 78;
• price: 39,500 rub.;
• characteristics: wired connection, diagonal – 78", resolution – 4800 x 9600, infrared, ultrasonic technologies are used, suitable for Windows, Macintosh and Linux, weight – 42 kg, included wall mount, cables;
• pros: 5 year warranty;
• cons: only 1 person can work.

For preschool children

The optimal combination of price and capabilities is the Classic projector board. It's perfect for preschool institutions, because several children can work on it at the same time:

• Model name: Classic Board CS-IR-85ten;
• price: RUR 41,725;
• characteristics: infrared technology, diagonal - 78"", weight -25 kg, dimensions -176x128x4.5 cm;
• pros: senses any object, finger, stylus, magnetic work surface, allows touch of 6 users;
• cons: not found.

Inexpensive screens are offered by the manufacturer ScreenMedia. These are modern touch devices for kindergarten, with which you can organize educational activities:

• model name: ScreenMedia M-80;
• price: RUB 29,922;
• characteristics: working surface – 1670 x 1170 mm, diagonal –80"";
• pluses: wear-resistant;
• cons: not found.

Especially for your child, you can purchase a convenient multimedia device from ActivTable in the form of a table. The interactive screen is a tabletop on which six people can play the game at the same time. It recognizes up to 12 touches at a time:

• model name: ActivTable 2.0;
• price: RUB 530,823;
• characteristics: ultrasonic, infrared technologies are used, diagonal - 46", resolution - 4096x4096, weight -72.5 kg, width work area– 1020 mm, height –572 mm, 6 built-in browsers, 6 headphones connected,
• pros: it is possible to evaluate the work of each participant separately, wireless Internet connection;
• cons: high cost.

For drawing

Polish manufacturer Esprit offers a multifunctional board. It can be used as a touch screen and as a regular school board, on which you write with dry erase markers:

• Model name: Esprit TIWEDT50;
• price: RUB 52,500;
• characteristics: optical technology, 4.5 m USB cable, telescopic pointer, works with Windows XP SP3, Windows 7, Windows 8, diagonal - 50", recognizes 2 touches;
• pros: enamel surface with anti-vandal properties;
• cons: not found.

The Russian manufacturer ABC Board M-64 offers a scratch-resistant board. It is used as an interactive screen, a surface for drawing with ordinary marker objects, and for attaching magnets:

• Model name: ABC Board M-64;
• price: 54,000 rub.;
• characteristics: microdot technology, diagonal – 64", working surface – 875 x 1185 mm, number of users – more than 2;
• pros: suitable for working with non-electronic drawing tools, built-in battery;
• cons: not found.

An electronic board from the Belgian manufacturer PolyVision is three in one. By purchasing it, you get an interactive, magnetic, marker surface:

• model name: PolyVision eno flex 2620A;
• price: RUB 92,650;
• characteristics: microdot technology, diagonal – 78", interactive area – 1180x1580 mm, two additional doors, simultaneous work with three styluses;
• pluses: anti-vandal cermet surface;
• cons: not found.

How to choose an interactive whiteboard

By purchasing interactive whiteboards for school or design organization, you are taking a responsible step, since the quality of the work will depend on it. When choosing a purchase, focus on the following factors:

• Versatility. Choose products that are suitable for interactive and regular work.
• Controls. Choose a product that can be used with any object.
• Software. It is very different, the profile can be customized to the desired disciplines (mathematics, physics).

Video

Technologies do not stand still, and even things familiar to us change beyond recognition or give way to new, more modern analogues. Thus, a regular school board no longer meets the requirements of today’s pedagogy, and is being replaced by an interactive board. What differences does it have from its predecessor with chalk, and why is it better - read the article.

What is an interactive whiteboard?

This is an educational tool that allows you to display images from a computer on a screen using a digital projector. The teacher can control information from a PC directly on the board using a special pen (the first interactive Smart Board worked on this principle) or his finger as a mouse (most of the latest generations of boards work this way). The teacher or student can move, open, copy objects, and take handwritten notes, which can then be converted to text and saved. Also, all actions that occur on a computer connected to the projector will be shown on the big screen.

Why is it needed?

The interactive whiteboard is a powerful tool that allows you to bring innovation to standard teaching methods and improve interaction between different participants in the learning process. It makes it possible to integrate different media content into lessons.

But the question arises: is it cost-effective to equip classrooms with equipment that costs between $1,100 and $3,000 (not including the price of additional equipment)? The answer to this question is yes. This is cheaper than equipping every classroom with a computer or requiring students to bring their own laptop or tablet. But the use of computer technology in the classroom today is not just a tribute to fashion, but a necessity.

However, such boards are used not only by classical educational institutions. Training centers different directions are equipping their classrooms with interactive whiteboards, and leading companies are using them to facilitate more productive discussions and information sharing among their employees. These could be meetings on the launch of new products, or discussions of the results of activities and the creation of new plans.

History of invention

Canadian couple Nancy Knowlton and David Martin were the first to introduce this idea to the world. Nancy had experience working in a school, and David had several businesses, one of which was selling projectors. One day a dialogue began between them in which they discussed the difficulties of collective learning. Both applied their knowledge, and in 1986 the innovative Smart Board appeared. This was followed by the founding of a company of the same name (1987), and mass production began in the early 90s. In 1992, Smart Board began collaborating with Intel, which only accelerated its development and distribution throughout the world. Today, controlling devices using touch may not surprise anyone, but more than 20 years ago it was a revolutionary technology.

Later, other manufacturers appeared - ActivBoard, eBeam, DualBoard, Mimio, StarBoard, Promethean, but the Smart Board interactive whiteboard became so widespread that the company name is often used as a synonym for this type of technology. It can be found in both UK and Indian classrooms.

What features does the new generation board have?

A teacher or student can write, draw, draw, annotate, highlight text or a specific area of ​​the screen, and then save the resulting images and share them with students for further study.

You can also play videos, launch training videos, and open websites and programs.

But do not forget that the interactive whiteboard itself is just an object that cannot interest and educate children. The key to success is careful preparation of the lesson and selection of material on the part of the teacher; only then will he be able to fully use the full potential of modern technologies and give students more knowledge.

Using an interactive whiteboard in lessons of various disciplines

Here's how you can use the new equipment in class:

• In biology, a teacher can show a drawing of the structure of the ear, sign the names of its parts, explain the material, and then send this file to students or post it on the school website for downloading.

• During a craft lesson, you can include a video that explains how to make a craft. Using a special program, you can split the screen and show several videos at the same time so that students can do different projects.
• Physics and chemistry will become clearer and more interesting with the use of numerous educational videos, ranging from films about astronomy or the optical principles of the eye, to small programs that can show, for example, how a ball bounces off different surfaces.
• The interactive whiteboard completely changes the idea of ​​a geography lesson. The teacher can use Google Maps and show students maps of any scale and with high level detailing everything globe, while simultaneously opening photographs taken in the area being studied. In addition, he can take a virtual tour of famous cities using the Street View service.

Just something complicated

But you should not assume that only disciplines that use a lot of visual material (maps, drawings, videos, etc.) need an interactive whiteboard.

Mathematics with primary classes can become closer and clearer to children if you use special educational games. And for older children, animated videos that explain multiplication with brackets, algebraic equations, etc. will be useful. Building correct and neat graphs becomes much easier; the teacher can layer them on top of each other, introduce new values ​​of variables and change them during the lesson.

Teachers love that they can write everything down in advance. necessary examples and don’t waste precious lesson time on this. If necessary, even after six months you can open the file using the right topic and update the material. The time spent on writing and erasing information on the board is minimized. Teachers also note that due to this, they face the children almost all the time, and this helps maintain discipline and attention among them.

Therefore, it can be argued that the interactive whiteboard is a step towards more interesting and productive learning.

Interactive whiteboards. Why are they and for whom?

• Presentations

This is the first part of the review where we will look at the basic concepts and operating principles of interactive whiteboards.
Interactive whiteboards are increasingly being used in our lives. They stand in offices, they are taught in schools, they become good tool transmission and perception of information. What is an interactive whiteboard, how does it work, what are they, and are they needed in Russian schools? These are the questions I would like to answer in this review.

Recently, news was published about a new development by LG where the company presented the “school board of the future”, various statements appeared in the comments, some said that “... all the most eminent scientists in the largest universities in the West create flowcharts and describe equations with chalk on a regular blackboard.. "and the emergence of such innovations leads to the dullness of children, while others believed that this is a new impetus for the development of education, now you can not explain with your fingers how electrons move around the nucleus, but clearly show on video or 3D models that will once again interest children and attract their attention to the scientific process. Well, we'll figure it out.

And so what is an interactive whiteboard? It’s nothing more than just a huge touch panel onto which a desktop image from a connected computer is projected using a projector.

Boards with this type of installation are called “direct projection boards” due to the fact that the projector is installed directly in front of the panel, or suspended from the ceiling. This type of board is the simplest and cheapest, which is important, but it has a significant disadvantage: when using it, you have to stand sideways to the board so as not to block the projected image, which is not always convenient

A rear projection board, where the projector is located behind the touch screen, does not have this drawback, and the presenter, when approaching the screen, does not block the light flux of the projector, which is very convenient in work. In addition, the bright light of the projector does not reach the presenter's eyes.

Stationary boards are built into walls or into special structures; the mobile kit does not require additional construction; its design includes a system of mirrors that allows the implementation of a compact mobile device. But the weight of the structure, of course, corresponds to ~200 kg, with a weight regular board around 40 kg.

It should be said that interactive whiteboards are produced using various technologies determining the position of a marker or finger on a surface. Now there are: Touch resistive, optical, infrared, ultrasonic, electromagnetic technologies.

Touch resistive technology is used in interactive whiteboards, the surface of which consists of two layers, between which sensors are located. When you press any object (or finger) on the top layer of the working surface of the board, sensors determine the location of contact and transmit information to the computer.

The optical technology used in interactive whiteboards also allows you to work with any object on the board. Infrared sensors “see” an object that is brought close enough to the surface of the board, determine its coordinates and transmit it to the computer.

Infrared and ultrasonic technologies allow you to work with the board only with the help of a special marker. When the marker touches the surface, it emits an ultrasonic and infrared signal, which is detected by sensors in the frame of the board.

Electromagnetic technology also involves the use of a special marker with the interactive whiteboard. Its position is determined by sensors in the surface of the board. The same technology is used in wireless tablets, as well as in interactive panels that replace a computer monitor.

those same markers


and they are in action

All these technologies can be divided into 2 conditional subgroups: boards that can be controlled by hand or boards for which a special “marker” is needed.
Each of them has its own advantages; the main ones for one are speed and ease of control without additional gadgets, while for the other it is easier to do constructions and all operations related to the accuracy of touch detection.

So when choosing an ID, you need to decide on the following questions:
- How often and in what capacity will the interactive whiteboard be used?
If you will often write on the ID, then it makes sense to buy an ID on which you can write not only in the “white” board mode, but also with an ordinary marker when it is turned off. If you plan to make presentations with written additions, or use drawing programs, for example, PAINT, then for these purposes would be better suited electromagnetic board with hard coating.

Do you need a movable or fixed board?
Your choice depends on the purpose of using the ID

Do you need companion devices for ID?
These are, for example, remote controls that are used during questionnaires, surveys or testing using ID. Such remote controls can come complete with the board or be sold separately

What ID software do you need?
Each ID is equipped with software, only some include only the most basic utilities, and some have additional software, for example, multimedia software - libraries, encyclopedias, educational books, educational flash games, etc.

Of course, these are not all the questions that should guide you when choosing an interactive whiteboard. You should consider the terms of warranty and repair in case of malfunction of the ID, make sure that you have Russian-language instructions, familiarize yourself with the functionality of the interactive whiteboard and the ease of its development, and, of course, do not forget about the price.

The most important advice: do not rush to buy the first interactive equipment you come across just because it is called an “interactive whiteboard”. It is best to consult with a specialist, visit online forums where they discuss Various types boards, get acquainted with the products of different manufacturers.

In the second part of the review there is an idea of ​​a duel SmartBoard vs ActivBoard, they are from different categories SmartBoard Touch (without manipulators) and ActivBoard Electromagnetic (marker) so suggest what parameters they can be tested by and the methods of these tests;-)

Interactive whiteboards

Interactive technologies have proven their worth in educational processes, in the organization of production, as well as in some specialized institutions and organizations. To modern man requires direct participation in all these processes, but at the same time he does not want to spend a lot of effort on this. In addition, these devices have a number of additional requirements: they must be compact and inexpensive. There is such a solution - these are interactive whiteboards that appeared in Russia in 1991.

Fully functioning interactive whiteboards typically include 4 components:

· computer

· multimedia projector

· appropriate software

· and the interactive whiteboard itself, which can also be equipped with a built-in printer

The image from the computer monitor is transmitted through the projector to the interactive whiteboard, and touches on its surface are sent back to the computer via a cable or through wireless communication interfaces and processed by special software.

Types of interactive whiteboards

According to the main characteristics they distinguish interactive whiteboards with forward or reverse projection.

With forward projection, the projector is located directly in front of the surface of the interactive whiteboard, with reverse projection, it is behind it. Some models of interactive whiteboards can be equipped with special pocket personal computers for data exchange. There are also expensive models of interactive whiteboards that do not use a projector, but are a large touch-sensitive plasma panel.

There are three types of interactive whiteboards:

· Boards that fix the resistance of the surface when touched.

Such boards have a soft and flexible surface, consisting of two parts. The material that fixes the resistance is separated by a small gap from the rest of the surface of the board and transmits signals to the computer when a special membrane is triggered. Such boards can be controlled not only with special markers, but also by simply touching the board with a hand or a pointer.

Special markers can also be customized (using the included software(software)) to display different colors. Such boards are very suitable for schools, as they are reliable and do not require any special devices that can get lost or broken.

· Boards that record electromagnetic pulses

These boards are similar to traditional ones and have hard surface. Control is carried out using special electromagnetic markers powered by batteries. The surface of the board is covered with a grid of thin wires that capture the small magnetic field emitted by the marker.

Laser boards have a hard work surface with infrared laser scanners mounted on the surface

These scanners detect the movement of a special pen, the encoded color and transmit them to the computer. Close to this technology are DViT (Digital Vision Touch) boards, which use small digital video cameras located in the corners of the screen and record every touch on it.

A microscope, camera, digital camera or video camera. And you can work productively with all the displayed materials right during the lesson. For the teacher, a supply of visual and video material when preparing for a lesson with the help of this technical means is limitless, since there are many educational resources on any topic, and in various online libraries you can find specific visual materials and use them repeatedly.

Now teachers simply do not need to worry about the safety of paper maps, posters and teaching aids. There will simply be no need for them. All work carried out during the lecture with all the notes and notes made on the board can be saved on the computer for later viewing and analysis, including in the form of a video recording.

The interactive whiteboard allows you to reproduce information in a format accessible to all students. Working on the board with an electronic marker like a mouse, the teacher can quickly and clearly demonstrate this or that method of work.

The greatest effect can be obtained by a teacher who uses all the capabilities of the board. Using a special marker, an interactive whiteboard allows you to move drawings, photographs and texts across its surface, copy them, rotate them, change their size and shape. Using such a marker, you can not only draw on the surface of the board, but also control computer programs, press buttons, select and drag objects. The marker in this case replaces the computer mouse. This feature allows you to use many types of interactive whiteboards. computer programs, including most of the existing multimedia computer educational programs.

Remotely, while managing the presentation, the teacher has more opportunities to provide individual assistance to students, because all the constructions and diagrams that he had to complete on the board during the lecture are already on the presentation slides.

A teacher working with an interactive whiteboard can increase the level of comprehension of the material through a combination of various forms transmission of information - visual, sound and tactile. During the lecture, he can use bright, multi-color diagrams and graphs, animation accompanied by sound, interactive elements that respond to the actions of the teacher or student. If necessary, you can simply enlarge one or another element drawn on the surface of the board with one movement of your hand. Competent work with an interactive whiteboard also allows you to optimize the educational process.

The interactive whiteboard reduces the psychological barrier, allowing students to overcome their fear of technology and begin using it in class. modern technologies.

The interactive whiteboard, depending on the manufacturer, may be equipped with special interactive tools. Let's look at the functionality of some devices using the ACTIVInspire interactive whiteboard from Promethean as an example.