Example by means of the following example using a

Info iconThis preview shows page 1. Sign up to view the full content.

View Full Document Right Arrow Icon
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: tiometer in such a way that the diffuse sensor reacts to the plastic film and not to the inside of the packaging on the other side. The diffuse sensor must be aimed vertically at the reflecting transparent panel. Ultrasonic proximity sensor This solution requires a concentration of ultrasonic emission on to the transparent panel. A test is recommended without a transparent panel to check that the ultrasonic proximity sensor does not respond to the packaging itself. This may happen in the case of a large distance and proximity sensors with an ultrasonic cone which is opened too wide. In certain circumstances, the use of a sound absorbing aperture plate is required. This proximity sensor too must be directed vertically at the transparent panel. 260 © Festo Didactic GmbH & Co. KG • FP 1110 16. Solutions Fig. 16.4.2: Ultrasonic proximity sensor with a sound-absorbing shield (material: e.g. felt) 16.5 Solutions to exercises from Chapter 6 Exercise 6.1 Environmental effects on optical proximity sensors In a dus...
View Full Document

Ask a homework question - tutors are online