ELECTRONICS’ 2006 20 – 22 September, Sozopol, BULGARIA WEB BASED SOFTWARE FOR SEMICONDUCTOR DEVICES LAB MEASUREMENT SYSTEM 1 Ivan Furnadziev, 2 Vassiliy Tchoumatchenko, 3 Tania Vasileva, 4 Dimitar Tenev 1, 2, 3 Department of Electronics, Technical University of Sofia 4 Department of Computer Systems, Technical University of Sofia 8, Kliment Ohridski St., 1000 Sofia, Bulgaria, phone: +359888966871, 4 e-mail: ditenev@abv.bg The advance of the technologies nowadays allows putting many laboratory measurement instruments in a single desktop box. This desktop box combined with a personal computer and Internet connection, gives a perfect opportunity for a laboratory which is accessible at any time and place. Many companies have created different measurement boxes with different virtual instruments attached to them, but it is still difficult for the trainee to make use of all of them. The article proposes common software architecture, which is suitable for all existing measurement boxes. The proposed software architecture is web based and creates a single view of the virtual instruments, so a trainee could easy use any hardware from single software. Keywords: software architecture, virtual instruments, web based measurement 1. INTRODUCTION To achieve the complete level of education it is important to include the experimental work as part of the trainee. Most of the time the experimental work requires well equipped laboratories with “tons” of hardware. The equipment of such laboratories costs a lot, and sometimes the used hardware is quite complicated, and difficult to understand from the learner. To remove these obstacles many companies (for example: Lucas-Nüelle with UniTr@in system [1]; National Instruments with LabView [3]; Visatronic with VT7; Meilhaus with series of USB measurement devices; etc.) have created hardware measurement devices, which collects the whole laboratory hardware in a single desktop box (DAQ – Data Acquisition board, see fig.1). Fig.1: A typical DAQ board using USB interface to connect to a computer 136