Graphical touch screen of thermal signs for the blind people - clinic tests

• Published in: Microelectronics international Vol. 24; no. 2; pp. 23 - 27
• Main Authors: Boro, Krzysztof, Bratek, Piotr, Kos, Andrzej
• Format: Journal Article
• Language: English
• Published: Bradford Emerald Group Publishing Limited 01-01-2007; MCB University Press
• Subjects: Aids for the disabled; Applied sciences; Blindness; Braille; Cold; Computer graphics; Computers; Display; Electronics; Exact sciences and technology; General equipment and techniques; Handicapped assistance devices; Heat; Imaging devices; Instruments, apparatus, components and techniques common to several branches of physics and astronomy; Interactive computer systems; Microelectronics; Physics; Product testing; Prototypes; Pumps; Semiconductor electronics. Microelectronics. Optoelectronics. Solid state devices; Sensors; Sensors (chemical, optical, electrical, movement, gas, etc.); remote sensing; Signs; Studies; Transistors; Aids for the disabled; Sensors; Prototype; Measurement sensor; Touch sensitive screens; Software; Thermal imaging; Graphic display; Micropump
• ISSN: 1356-5362; 1758-812X
• DOI: 10.1108/13565360710745566

Purpose - The paper aims to present the prototype of a graphical touch screen of thermal signs for the blind.Design methodology approach - The surface of every Peltier pump is a touch point that demands the thermal stabilization. Miniature Peltier modules can work both as heat and cold generators. They are also able to measure the required dot temperature. Graphical screen of thermal signs displays a simple symbol or Brail text. Special computer program was made to control this innovative device. The software enables monitoring the temperature of each Peltier module.Findings - The experiments carried out with blind people show that they are able to recognize hot and cold dots. Infrared photos of the device have been made using the thermographic MK525 camera.Originality value - The paper illustrates that it is possible to display simple graphics by using Peltier micropumps.