| 摘要 |
The method uses a vehicle 1, having a sender pulse generating device 2 fitted to its gearbox 3, at the start of a track 4 of known length. The track 4 has a starting marker 5 and a finishing marker 6, e.g. V-blocks at spaced intervals on the track 4, activated by an antenna mounted on the vehicle 1. A signal processing means 7 counts the integral number of pulses and determines the fractions of a pulse length at the starting and finishing markers 5,6. A microprocessor controls the signal processing combining time intervals, which represent fractions of a pulse length at the starting and finishing markers, with the integral number of pulses effectively to add both fractions to the pulse count and thus accurately determine how many pulses and what fraction of a pulse is generated when the vehicle travels, over the track 4, between the starting and finishing markers 5,6. |
