The basis of the system is a industrial PC that collects data from 3 acceleration sensors mounted on a manikin moving on a trolley braked in a defined stopping path simulating a vehicle impact. At the same time, the deceleration of the trolley is measured using an optical sensor and a comb with notches of defined length. The carriage speed is thus converted to a pulse length measurement as the carriage moves. Another measured value is the maximum inclination of the manikin during the braking distance of the trolley – a static quantity measured after impact. The system software is based on standard EfLab program with custom modifications.
- dynamic measurement of analog signals,
- dynamic pulse length measurement – trolley deceleration,
- combination of dynamic and static measurement.
(stated accuracy of measurement is over the whole measuring chain, including sensors)
|Unit||No. of channels||Resolution||Accuracy||Sampling|
|acceleration (x, y, z)||3||0.01%||0,5%||10 kHz|
|displacement of the manikin||1||1 mm||0,5%|
|starting speed||1||0.25 km/h||0,5%|
|trolley deceleration||1||0.000 1 |
More information request here.