GEAR MEASURING SPEED OF VEHICLE Russian patent published in 1999 - IPC

Abstract RU 2138055 C1

FIELD: remote measurement of speed of vehicles. SUBSTANCE: two channels incorporating lens, photoconverter, key, analog register, subtracter and integrator determine fact of presence of moving image against permanent background. Comparator, delay unit, third subtracter, coincidence unit, amplifier-limiter, inverter, standard pulse transmitter, pulse counter and speed indicator compute speed of moving vehicle by difference in time of appearance of moving image in two channels. EFFECT: enhanced measurement accuracy and independence of functioning. 1 dwg

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RU 2 138 055 C1

Authors

Grankin R.A.

Sorokin O.E.

Shabakov E.I.

Dates

1999-09-20—Published

1998-06-08—Filed