The invention discloses a micro inertial measurement unit and a measurement unit based adaptive headlamp control method to be used for solving the technical problem of poor safety of adaptive headlamp control methods. According to the technical scheme, the measurement unit comprises an X-axis gyroscope, a Y-axis gyroscope, a Z-axis gyroscope, a tri-axial accelerometer, a magneto-resistive sensor, a signal conditioning unit and a single-chip microcomputer. A gyroscope sensed inclined angle gamma, a yaw angle phi and a pitch angle theta signal are sensed by the X-axis gyroscope, the Y-axis gyroscope, the Z-axis gyroscope and the tri-axial accelerometer together. The tri-axial accelerometer outputs gravitational acceleration of the car body in three-dimensional space. The gyroscope sensed inclined angle gamma, the yaw angle phi, the pitch angle theta signal and the gravitational acceleration are conditioned through the signal conditioning unit and are subjected to fuse processing by the single-chip microcomputer, and accordingly, the accurate inclined angle gamma, yaw angle phi, pitch angle theta signal and change rate signals are obtained. The single-chip microcomputer sends control information to an upper computer to be controlled according to the inclined angle gamma, yaw angle phi, pitch angle theta signal and change rate signals. The micro inertial measurement unit and the measurement unit based adaptive headlamp control method have the advantage that accumulative errors have robustness, so that the headlamp control is safe and reliable.
Micro inertial measurement unit and measurement unit based adaptive headlamp control method
2015-07-29
Patent
Elektronische Ressource
Englisch
IPC: | B60Q ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL , Anordnung von Signal- oder Beleuchtungsvorrichtungen, deren Einbau oder Halterung oder deren Schaltkreise bei Fahrzeugen allgemein / G01C Messen von Entfernungen, Höhen, Neigungen oder Richtungen , MEASURING DISTANCES, LEVELS OR BEARINGS / G01P MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION OR SHOCK , Messen der Linear- oder Winkelgeschwindigkeit, der Beschleunigung, der Verzögerung oder des Stoßes |
Adaptive headlamp system based on inertia measurement unit
Europäisches Patentamt | 2021
|Method for operating inertial measurement unit, inertial measurement unit and vehicle control system
Europäisches Patentamt | 2024
|