MULTI-CHANNEL SEISMIC JERKS AND TSUNAMI WARNING SYSTEM Russian patent published in 2009 - IPC G01V1/22 

FIELD: instrumentation.

SUBSTANCE: proposed system relates to multi-channel systems designed to transmit seismic signals from pickups to warning devices. Proposed system reduces signal spectrum bandwidth or signal delivery time thanks to increased data transmission rate in preset frequency range. Proposed system comprises the components that follow, i.e. transmission line, terminal, central station, terminal stations with input for signals coming from seismic transducers, instruction generator, central station sync signal extraction device, multipliers, Walsh master oscillator, integrators, analog-to-code converters, memory register, controlled inverter, switching circuit, current generator, two-channel Walsh generator, auxiliary n-digit binary counter, two-input digital switching circuit, sync-pulse oscillator. It comprises also terminal station sync signal extraction device, instruction decoder, count pulse oscillator, terminal station O-circuit, terminal station trigger, two-input switching circuits, central station trigger and two-input switching circuits of central station.

EFFECT: higher efficiency of transmission line wavebands.

1 tbl, 4 dwg