Mitsubishi Electric Corporation

Mitsuaki Akaza

Toshiyuki Yamashita

Takashi Ohsawa

Satoru Inoue

Wataru Tsujita

Takahiko Ito

Ryotaro Suzuki

In a headlight optical-axis control device, a controlleris configured to: calculate vehicle angles indicating tilt angles of a vehicle relative to a road surface, on the basis of ratios, each being a ratio of a difference between a reference acceleration in a longitudinal direction and a signal indicating an acceleration in the longitudinal direction detected during traveling of the vehicle, to a difference between a reference acceleration in a perpendicular direction and a signal indicating an acceleration in the perpendicular direction detected during traveling of the vehicle by an acceleration sensor; calculate a plot of the calculated vehicle angles thereby to derive a vehicle angle corresponding to a case where a change of the acceleration in the longitudinal direction is zero; and generate a signal for controlling the optical axes of headlightsL andR on the basis of the derived vehicle angle.

Headlight optical-axis control device

A parking support device is provided for extracting detection point data corresponding to a corner portion of a parked vehiclefrom detection point data showing a series of detection points at each of which the distance to the parked vehicleis detected, performing a noise component removing process and a data complementing process using a curve approximation of the series of detection points on the extracted detection point data, estimating reflection points of a detection wave in the corner portion from the detection point data and sensor position data showing a moving path of a distance sensor, and measuring the length of a parking space adjacent to the parked vehicleaccording to a corner position which is determined from the positions of the estimated reflection points to determine if a vehiclecan be parked in the parking space.

Parking support device

Body velocity estimating deviceA is constituted by acceleration measurement unit, acceleration separation unit, filter processing operation unit, acceleration addition unit, integration processing operation unit, and estimated body velocity output unit. The unitcompares an acceleration measured by the unitwith set acceleration upper and lower limit reference values to separate the measured acceleration into reference value range-in and range-out accelerations. The unitperforms filtering on the separated reference value range-out acceleration to calculate filtered accelerations of the reference value range-out acceleration. The unitadds the filtered accelerations to the previously separated range-in acceleration. The unitmultiplies the added acceleration by an operation period, and adds the resultant to the estimated body velocity calculated in the preceding one operation period to update the value of the estimated body velocity. The unitoutputs the updated estimated body velocity.

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Tokyo, Japan

Mitsuaki Akaza