Continuous monitoring and recording of travel information for buses and commercial vehicles - has tacho disc system supplemented by electronic short cycle memory that stores drive conditions in event of collision or similar event.

摘要

The monitoring system is based on a long term recording in the form of a tacho disc, together with a digital electronic storage of dynamic conditions over a short period. Typically the period may be of 40 seconds duration and the recording is triggered by some threshold value. In the event of a collision the vehicle speed will change considerably and the drive parameters, such as speed, braking, engine speed, etc. will be logged for the later examination. At the same time other parameters will be recorded on the disc. ADVANTAGE - Allows detailed examination of various vehicle parameters, retrospectively.