The alarm curtain: what it is and how it works

Systems to counter theft in the home are many, and range from simple bar to roll up to sophisticated siren alarm which in many cases can be disabled by thieves. Now is the new antitheft (maybe).

A new polyester fabric developed by the Fraunhofer Institute in Berlin (where they invented the MP3) contains conductive wires coated with silver have a definite advantage over traditional anti-theft systems based on sensors and optical systems: the curtains that can be drawn from are less complex.

The fabric is inexpensive, uses common materials and is based on a simple system of evaluation of the signals. Moreover, the microprocessor and the latex of the conductive wires are integrated at low temperatures in the polyester substrate during a standard procedure of industrial weaving.

Al Fraunhofer have put the material in the washing machine at a temperature of 104 degrees centigrade, subjecting it, subsequently, to a cycle of exposure to moisture of 85% at 85 degrees. A final test at temperatures increased from -40 to 85 degrees has shown conclusively the strength of the fabric.

Being so flexible and versatile, the fabric you could incorporate in construction materials, from the roof to the floor, so you have a burglar alarm unpredictable for burglars. Doubts remain about the reliability of the system: a simple gust of wind would trigger the alarm? Probably future antifurti based on this material can be calibrated so as to avoid annoying and unwanted activations.

 

15/10/2012

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Translated via software

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Source:

Italian version of CercaGeometra.it