Mrs Miller is happy. considering that she moved to the new apartment building she hasn’t had any nasty surprises on her heater bills. it is for the reason why that the building is insulated utilizing a fresh material which displays particularly reduced thermal conductivity and so higher energy efficiency. vacuum cleaner insulation panels are made up of the firmly sealed shell and porous core material created from silicic acid. This serves to support the vacuum cleaner from the insulation panel. for the reason why that a vacuum cleaner is a very good thermal insulator, the insulation worth because of this vacuum cleaner panels is 5 to ten times higher than that of conventional panels, for instance males and females created from polystyrene. The panels are sensitive, however. finished the years the airtight movie loses its insulating effect plus the vacuum cleaner leaks. specialists put the increase in energy pressure at one millibar every year. another problem is the inescapable fact that for the reason why that the movie is very slender it may very well be damaged throughout transport. just before being installed the panels so have being examined to discover whether the vacuum cleaner and insulating effect are still present. so as that the condition because of this panels may very well be determined at any time, research experts at the Fraunhofer school for Microelectronic Circuits and techniques IMS in Duisburg have created a tiny pressure sensor. »The pressure sensor is placed within a recess inside the panel. On the board subsequent to the microchip there is a transponder utilizing a coil which transmits the measured documents by technique of the movie lacking any tricky wire connection. A audience on the outer wall because of this panel receives the measured documents and supplies the transponder with energy utilizing a second coil,« points out Dr. Hoc Khiem Trieu, mind of department at the IMS. »The sensor consumes very tiny energy and is also extremely small, measuring only near to 20 square millimeters. A even more unique component because of this tiny sensor is the inescapable fact that it draws its energy from the reader’s stereo signal even by technique of slender steel layers. it is typically so also ideal for measuring the vacuum cleaner in refrigerators, where reduced thermal conductivity is furthermore essential.«

The sensor is applied from the healthcare field, for instance to measure blood vessels or eye pressure. It has now been created even more for the building sector. »The sensor is presently at the prototype stage. The aim is to place it into series production in one particular to two years’ time,« states Trieu. The IMS could be showcasing the sensor at Euro ID, the trade fair for automatic identification, in Cologne from may very well four to a half dozen (Stand A12).

Source: Fraunhofer-Gesellschaft