INSTALATIE PENTRU MASURAREA SI INREGISTRAREA UNEI DISTANTE PARCURSE

摘要

An apparatus for measuring and recording a distance traveled by a track survey car comprises a rotary odometer, a moving recording band, and a drive for moving the band and/or a device for applying marks to the band which indicate the traveled distance. A pulse generator is mechanically connected with the odometer and sends a set number of pulses per rotation of the odometer to one input of a digital-analog converter. A pulse transmitter at a fixed distance from the odometer axle and above the rolling surface thereof is connected to the other converter input. A comparator is connected to the converter output and is adjustable to a signal value corresponding to a predetermined distance traveled by the vehicle. The output of the comparator is connected to the drive or to the marking device.