Device for monitoring an object outdoors

摘要

A description is given of a device for monitoring an object which is surrounded by a fence (2). In the fence (2) which is constructed, for example, as a wire-netting fence at least one piezoelectric line (5), which extends over the entire length of the fence (2), is fitted as sensor. The electrical voltage pulses which are transmitted by the line (5) are integrated in an electronic evaluating system (6) which triggers an alarm after a predetermined threshold value has been exceeded. <IMAGE>