PROTECTIVE ACOUSTIC-ELECTRIC SCREEN FOR ROADSIDE NOISE ABSORPTION Russian patent published in 2014 - IPC E01F8/00 

FIELD: construction.

SUBSTANCE: protective acoustic-electric screen for roadside noise absorption includes a body formed by a rectangular frame, rear flat and protective face walls, and boards of sound-insulating and sound-absorbing materials built into the body and board separators. The face wall (the first layer) is made in the form of a movable polymer film with inbuilt permanent magnets, the intermediate (second layer) is made of sound-absorbing materials with minimum residual deformation. The following components are built into the fixed rear wall (the third layer): inductance coils, semiconductor diodes, rectifying switching devices (comparators), bridge semiconductor rectifiers and accumulating batteries. The first outputs of inductance coils are connected with the first input of the rectifying bridge, the second outputs of inductance coils are connected with the cathode of the rectifying diode, anodes of which are connected to inputs of the switching device (comparators), outlets of which are connected with the second input of the rectifying bridge, the control input of the switching devices (comparators) is connected with the negative output of the rectifying bridge and the accumulating battery, and the positive output of the rectifying bridge - with the positive output of the battery.

EFFECT: improved screen.

5 dwg