G - Physics – 07 – C
Patent
G - Physics
07
C
343/12, 354/18
G07C 5/00 (2006.01) G01P 1/12 (2006.01) G07C 5/08 (2006.01)
Patent
CA 1301292
ABSTRACT OF THE DISCLOSURE A method and apparatus are disclosed for storing run data of a vehicle in the memory of an electronic tachograph and displaying these data with a predetermined resolution. The method comprises the steps of sensing the movement of the vehicle by means of a road sensor, providing digital distance and velocity data from signals of the sensing step proportional to the advance of the vehicle and the momentary velocity, respectively, and reading the digital data in subsequent cells of data memory of the tachograph in predetermined regular periods corresponding to the degree of resolution. The data are then read in subsequent cells of an accident memory which has a substantially smaller storage capacity than the data memory at a first rate substantially higher than a sampling rate associated with the predetermined regular periods. The maximum and minimum values of the velocity and the value of the distance during each period is determined, and, in the step of reading in the data memory, at lease the minimum and maximum values of the velocity data and the distance value are entered. The content of the accident memory is shifted forward at the first rate and the content of the data memory is shifted forward at the sampling rate.
555401
Otta Karolyne
Racz Gabor
Szekely Levente
G. Ronald Bell & Associates
Otta Karolyne
Racz Gabor
Szekely Levente
LandOfFree
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