FIELD: mining industry; indication at control of mine hoists. SUBSTANCE: indicator has two acoustic vibration transmitters, one on each lift vessel, two radiators, two receivers and information processing unit. The latter has two oscillation mixers, reference oscillator, two frequency discriminators and two integrators. Information processing unit has additionally two amplifiers and two measuring instruments. Inputs of amplifiers are coupled with outputs of integrators, and outputs of amplifiers are connected with measuring instruments. EFFECT: improved reliability and accuracy of checking position of lift vessels in mine shaft. 1 dwg
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|---|---|---|---|
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|
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