Title:
CALIBRATION METHOD OF THE POSITIONING OF AN ONBOARD DEVICE FOR THE ACQUISITION AND THE REMOTE TRANSMISSION OF DATA RELATING TO MOTION AND DRIVING PARAMETERS OF MOTOR VEHICLES AND MOTORCYCLES
Document Type and Number:
WIPO Patent Application WO/2018/002893
Kind Code:
A8
Abstract:
A calibration method of the positioning of an onboard device of a vehicle with axes (x, y, z), wherein the device comprises at least one accelerometric sensor (S) which detects the accelerations to which the vehicle is subjected along axes (χ', y', z') of the accelerometric sensor, angularly arranged with respect to the axes (x, y, z) of the vehicle with rotation angles (αx, αy, αz). The accelerometric sensor (S) acquires the acceleration values generated by the force of gravity G acting on the vehicle when the vehicle is stopped in a substantially horizontal position, and the accelerations generated by a plurality of events suffered by the vehicle, along the axes (χ', y', z'). The travel direction of the vehicle is determined on the basis of a prevailing direction of the accelerations generated by a plurality of events suffered by the vehicle. According to the method, a transformation matrix (R) is determined, which puts in relation the accelerations measured along the axes (χ', y', z') with corresponding accelerations along the axes (x, y, z), wherein a first rotation angle (αx) and a second rotation angle (αy) are derived on the basis of acceleration values of the force of gravity detected along the axes (χ', y, z') when the vehicle is stopped, and a third rotation angle (αz) is derived on the basis of the determined travel direction of the vehicle.
Inventors:
SABINA SIMONE (IT)
Application Number:
PCT/IB2017/053952
Publication Date:
March 01, 2018
Filing Date:
June 30, 2017
Export Citation:
Assignee:
OCTO TELEMATICS SPA (IT)
International Classes:
G01P21/00
Attorney, Agent or Firm:
DEAMBROGI, Edgardo et al. (IT)
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