DEVICE FOR AUTOMATICALLY ADJUSTING OPTICAL AXIS DIRECTION OF HEADLIGHT OF VEHICLE
PROBLEM TO BE SOLVED: To automatically adjust the optical axis direction of a headlight of a vehicle by correcting the displacement of the vehicle by acceleration/deceleration or turning according to the output of a vehicle height sensor. SOLUTION: A measured rear height value (the displaced amount...
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| creator | OKUCHI HIROAKI NISHIMURA KENICHI |
| description | PROBLEM TO BE SOLVED: To automatically adjust the optical axis direction of a headlight of a vehicle by correcting the displacement of the vehicle by acceleration/deceleration or turning according to the output of a vehicle height sensor. SOLUTION: A measured rear height value (the displaced amount of the vehicle height on the rear wheel side) is input from the height sensor 11 mounted at the rear of the vehicle into an ECU 20. Based on the measured rear height value and the travelling state of the vehicle by a vehicle speed sensor 12, the calculated front height value (the displaced amount of the vehicle height on the front wheel side) is estimated, and the pitch angle of the vehicle is calculated. Since an error occurs in the acceleration/deceleration and the turning of the vehicle, the calculated front height value is updated. Even if the vehicle is before the completion of one trip, the error is canceled by the ECU 20, and an actuator 35 is driven to properly adjust the optical axis direction of a headlight 30. COPYRIGHT: (C)2008,JPO&INPIT |
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SOLUTION: A measured rear height value (the displaced amount of the vehicle height on the rear wheel side) is input from the height sensor 11 mounted at the rear of the vehicle into an ECU 20. Based on the measured rear height value and the travelling state of the vehicle by a vehicle speed sensor 12, the calculated front height value (the displaced amount of the vehicle height on the front wheel side) is estimated, and the pitch angle of the vehicle is calculated. Since an error occurs in the acceleration/deceleration and the turning of the vehicle, the calculated front height value is updated. Even if the vehicle is before the completion of one trip, the error is canceled by the ECU 20, and an actuator 35 is driven to properly adjust the optical axis direction of a headlight 30. 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SOLUTION: A measured rear height value (the displaced amount of the vehicle height on the rear wheel side) is input from the height sensor 11 mounted at the rear of the vehicle into an ECU 20. Based on the measured rear height value and the travelling state of the vehicle by a vehicle speed sensor 12, the calculated front height value (the displaced amount of the vehicle height on the front wheel side) is estimated, and the pitch angle of the vehicle is calculated. Since an error occurs in the acceleration/deceleration and the turning of the vehicle, the calculated front height value is updated. Even if the vehicle is before the completion of one trip, the error is canceled by the ECU 20, and an actuator 35 is driven to properly adjust the optical axis direction of a headlight 30. 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SOLUTION: A measured rear height value (the displaced amount of the vehicle height on the rear wheel side) is input from the height sensor 11 mounted at the rear of the vehicle into an ECU 20. Based on the measured rear height value and the travelling state of the vehicle by a vehicle speed sensor 12, the calculated front height value (the displaced amount of the vehicle height on the front wheel side) is estimated, and the pitch angle of the vehicle is calculated. Since an error occurs in the acceleration/deceleration and the turning of the vehicle, the calculated front height value is updated. Even if the vehicle is before the completion of one trip, the error is canceled by the ECU 20, and an actuator 35 is driven to properly adjust the optical axis direction of a headlight 30. COPYRIGHT: (C)2008,JPO&INPIT</abstract><oa>free_for_read</oa></addata></record> |
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| language | eng |
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| subjects | ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING ORSUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES INGENERAL PERFORMING OPERATIONS TRANSPORTING VEHICLES IN GENERAL |
| title | DEVICE FOR AUTOMATICALLY ADJUSTING OPTICAL AXIS DIRECTION OF HEADLIGHT OF VEHICLE |
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