http://hdl.handle.net/2173/31418 Thu, 20 Jun 2013 01:45:38 GMT 2013-06-20T01:45:38Z http://hdl.handle.net/2173/111561 Title: Ultra wideband positioning for intelligent security systems Authors: Twigg, Peter; Gadsby, D.; Bowring, Nicholas; Williams, I. Description: Full-text of this article is not available in this e-prints service. This article was originally published [following peer-review] in Measurement + Control, published by and copyright Institute of Measurement and Control. Mon, 01 May 2006 00:00:00 GMT http://hdl.handle.net/2173/111561 2006-05-01T00:00:00Z http://hdl.handle.net/2173/111560 Title: Weapons detection system for airport baggage screening Authors: Twigg, Peter; Bowring, Nicholas; Gadsby, D.; Williams, I.; Allwork, J. B. Description: Full-text of this article is not available in this e-prints service. This article was originally published [following peer-review] in Measurement + Control, published by and copyright Institute of Measurement and Control. Wed, 01 Jun 2005 00:00:00 GMT http://hdl.handle.net/2173/111560 2005-06-01T00:00:00Z http://hdl.handle.net/2173/111552 Title: Closed loop control of a pneumatic conveying system using tomographic imaging Authors: Deloughry, Richard J.; Pickup, Elaine; Ponnapalli, Prasad Abstract: The subject of pneumatic conveying of solids is a complex one. The flow regime present in a conveying system is dependent upon: the size and shape of the particles to be conveyed, the geometry and orientation of the conveying pipe, the relative densities of the solid and the conveying air. The variable parameters present are the velocity of the conveying air and the solids mass flow rate. The variation of these two factors dictates the presence of either dilute or dense phase flow. At Manchester Metropolitan University a pneumatic conveying system transporting polyethylene nibs, was used to investigate the implementation of a Proportional and Integral control system using a tomographic imaging system in the feedback loop. The aim of the investigative work was to achieve control of the air velocity and solids loading factor for the conveying system to maintain dilute phase flow at a prescribed level. The solids material conveyed was sensed using a PC based electrical tomographic imaging system and this was used to control the air velocity in the conveying system. Description: Full-text of this article is not available in this e-prints service. This article was originally published [following peer-review] in Journal of Electronic Imaging, published by and copyright S P I E - International Society for Optical Engineering. Sun, 01 Jul 2001 00:00:00 GMT http://hdl.handle.net/2173/111552 2001-07-01T00:00:00Z http://hdl.handle.net/2173/111532 Title: High-precision current conveyor implementation employing a current-steering output stage Authors: Wilson, B.; Al-Gahtani, M.; Vosper, J.; Deloughry, Richard J. Abstract: An improved current conveyor circuit topology based around the use of a current-steering output stage, rather than the more usual current mirrors, is described in this paper. The primary benefit of this approach is a significantly enhanced current transfer linearity through reduced reliance on output-device matching requirements. Outline performance details are given for a discrete version of the circuit and a prototype IC fabricated using this technique. Description: This metadata relates to an electronic version of an article published in International journal of electronics, 2006, vol. 93, no. 10, pp. 653-662. International Journal of Electronics is available online at informaworldTM at http://web.ebscohost.com/ehost/detail?vid=5&hid=15&sid=18f8b23a-00ae-47a1-a4ea-8ee8da800511%40sessionmgr14&bdata=JnNpdGU9ZWhvc3QtbGl2ZQ%3d%3d#db=buh&AN=22530603 Sun, 01 Oct 2006 00:00:00 GMT http://hdl.handle.net/2173/111532 2006-10-01T00:00:00Z