FIELD: transportation in industry. SUBSTANCE: to increase accuracy of transportation counting mechanism is used which is made in form of uniformly spaced outlet light conduits installed on base and connected with photodiode by means of optical connector. Photodiode is electrically coupled with platform drive control unit. Mounted on platform is inlet light conduit optically coupled with light emitting diode. Axes of inlet and outlet light conduits are parallel and arranged in one plane. EFFECT: enhanced accuracy of transportation. 1 dwg
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