To know clearly how the interactive white boards might have the ability to boost the teaching atmosphere, you have to realize the sensing technologies which are employed to track the interaction on the screen surface. These are resistive, laser, infrared optical, camera based optical and ultra sonic. Among all these technologies, the most effective in industrial interactive whiteboards use electromagnetic and resistive technologies.
The resistive touch screens are produced up of two flexible sheets each using a coat of resistive material and separated by a layer of micro thin air space. In operation the two screens press with each other, therefore registering the exact location where the screen was touched. With this technology 1 can use a finger, stylus or any other pointing device. Together with the electromagnetic technologies the board features an array of wires embedded under the board surface. These interact using the stylus tip to provide the exact location making use of the X and Y coordinates.
The type of stylus varies. You’ll be able to use an active stylus which utilizes battery power or that is wired towards the white board. You can find also passive styli which depend on electrical signals made by the white board hence requiring no external source of power. In easy terms the electromagnetic white board is often described as getting magnetic sensors which react and send messages for the laptop or computer when the board is activated by use of a magnetic pen.
Apart from the two main technologies, the other technologies are also gaining momentum within the interactive white board industry and consequently shouldn’t be ignored. With the optical infrared technologies, you must press the board surface for the infrared light to be visible. This permits the help computer software to triangulate the place of the stylus or marker. With this technology, the whiteboard may be created from any material.
The laser interactive whiteboard technology makes use of an infrared laser positioned within the upper corners on the whiteboard. The laser beams operate by sweeping across the surface with the whiteboard making use of rotating mirrors. The marker or stylus used to create around the board reflects the laser beams back for the source therefore enabling the triangulation of the X and Y coordinates. This technology performs well with a tough surface such are steel or ceramic which also possess the advantage of uncomplicated cleaning.
With ultrasonic and infrared, the stylus sends out an ultrasonic sound too as infrared light when pressed on the board surface. The board has two ultrasonic microphones that acquire the sound and calculate the variations in arrival time. This helps inside the triangulation of X and Y coordinates. This technologies also allows the whiteboard to be produced from any material. Nonetheless, a appropriate adapted stylus or active dry-eraser marker is vital.
Aside from these technologies you’ll find also other less substantial technologies like frustrated internal reflection, ultrasonic only and Wii Remote IWB. Though interactive whiteboards are technologically sophisticated, you can find certain problems that are widespread with most types. As an example employing permanent markers around the whiteboards can cause complications. A different popular challenge would be the danger of dents, punctures and also other damages towards the surface which are not seasoned with regular boards.
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