Appliance Design - February 2008 - (Page 22) CONTROLS & SENSORS ogy was spun-off in 2003 and the company, Sensitive Object, was formed. The theory states that a sound wave captured by an acoustic sensor can return that wave along its entire spatial area back to the location of the original source. The wave that is transmitted by the touch is captured by acoustic sensors, which sends the wave back to the source, where it is reflected back. As the sound wave is reversed and retransmited, it becomes more focused on the target. Traditionally, the interior surface of the unit being tested had to be covered with many sensors and each had to be connected to an individual electronic circuit that stores the signals. Fink’s research found that even a single sensor could be used. According to research by company founder Ros Kiri Ing, using a single sensor and a “chaotic cavity,” the same physical process was realized that allowed the sound waves detected by the single sensor sent back to its source. According to the research, the system can blend the sound waves that are emitted in all directions spatially and relay the waves back to that single sensor. Then, by comparing this signature to a data- Fig. 2. An example of impacts on the substrate material made by various means. ed the “time reversal mirror,” a technique that identifies specific acoustic signatures and determines the location of the touch point using the propagation of the waves, their rate of decay and how the waves echo after they contact the edge boundaries. The technol- • • Sales turnover 2006, more than 34 Million Euro, 45% of which for export. Applications: 55% Automotive water pumps, 20% Household, appliances pumps, 25% light Industrial submersible and agriculture pumps. Quality System Certied from TÜV according to ISO/TS16949 and ISO 14001 specication. Collaboration with Universities and Research Center for sliding face materials, and pumps uido-dynamics analisys. • • MeccanotecnicaUmbra S.p.A. Via G. Agnelli, 7 - 06042 Campello sul Clitunno (PG) ITALY Phone +39 0743 279.1 - Fax +39 0743 279242 e-mail: meccano@meccanotecnica.it www.meccanotecnica.it For more Information Enter 108 AD01084Mecca.indd 1 22 applianceDESIGN February 2008 12/4/07 10:50:22 AM www.applianceDESIGN.com http://www.meccanotecnica.it http://www.meccanotecnica.it http://www.appliancedesign.com
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