<title>Integrated optics vibrometer and neural network processing for online diagnostics of household appliances</title>

This paper addresses the question of on-line quality control of the production of house-hold appliances, which is an important goal of this industrial sector. Vibro-acoustic and mechanical diagnostics rely on vibration measurement: optical non contact measurements are presented as the tool to perform accurate and fast multi-point measurements on finished products. The solution proposed is based on the use of an array of four integrated optics displacement sensor for vibration measurement and on specially devoted fuzzy logic and neural algorithms able to detect the presence of different types of defects.