Graphical touch screen of thermal signs for the blind people – clinic tests
Abstract
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.
Keywords
Citation
Boroń, K., Bratek, P. and Kos, A. (2007), "Graphical touch screen of thermal signs for the blind people – clinic tests", Microelectronics International, Vol. 24 No. 2, pp. 23-27. https://doi.org/10.1108/13565360710745566
Publisher
:Emerald Group Publishing Limited
Copyright © 2007, Emerald Group Publishing Limited