MULTI-CHANNEL ACOUSTIC-EMISSION SYSTEM OF CONSTRUCTION DIAGNOSTICS Russian patent published in 2018 - IPC G01N29/14 

FIELD: measuring equipment.

SUBSTANCE: multichannel acoustic-emission system is designed for technical diagnostics and non-destructive testing of large-sized structures during strength tests. Contains acoustic transducer (1), preamplifier (2), channel control (8), controlled filters of upper (23) and lower (24) frequencies, main amplifier (4), resistive divider (17) consisting of resistors (25), (26), (27), three two-position keys (14), (15), (16), analog-digital (6), digital-analog (7) converters, random-access memory (9), digital signal processor (10) output of which is connected by bi-directional bus to input of Ethernet controller (22), other input of which is connected to Ethernet network switch (21). Output of main amplifier (4) is connected to series-connected peak detector (18), integrator (20), adder (19), output of which is connected via third on-off switch (16) to comparator (5), output of which is connected to inputs of random access memory (9) and digital signal processor (10).

EFFECT: such performance of system ensures its operation when changing input signals in wide dynamic range, and controlled high and low frequency filters can suppress noise and interference.

1 cl, 2 dwg