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CONTROLLING ACTUATORS OF REAR VIEW MIRRORS ON A TOWING VEHICLE FROM AN ELECTRIC CONTROL UNIT (ECU) OF A CONTROLLER AREA NETWORK (CAN)

IP.com Disclosure Number: IPCOM000129144D
Publication Date: 2005-Sep-29
Document File: 1 page(s) / 26K

Publishing Venue

The IP.com Prior Art Database

Abstract

Rear vision at different angles between a towing vehicle, e.g. a truck or tractor, and a towed vehicle, e.g. a trailer or semi-trailer, is accomplished in that the actuators for positioning the rear view mirrors on the towing vehicle are connected to an ECU (Electric Control Unit) connected to a CAN bus (Controller Area Network bus) of a CAN installed in the towing vehicle. The ECU picks up information supplied to the CAN bus from corresponding sensors or detectors concerning steering wheel movements, vehicle speed and whether a towed vehicle is connected or not and controls the rear view mirror actuators to position the mirrors in response hereto.

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CONTROLLING ACTUATORS OF REAR VIEW MIRRORS ON A TOWING VEHICLE FROM AN ELECTRIC CONTROL UNIT (ECU) OF A CONTROLLER AREA NETWORK (CAN)

On a towing vehicle, e.g. a tractor or truck, that pulls a towed vehicle, e.g. a semi-trailer or trailer, the rear view mirrors mounted outside the cab of the towing vehicle are usually positioned so that the driver can observe the rear edges of the towed vehicle.

When the towing vehicle is turned relative to the towed vehicle, the driver, however, loses sight of the rear edges of the towed vehicle.

To provide rear vision at different angles between the towing vehicle and the towed vehicle, the actuators for positioning the rear view mirrors on the towing vehicle are connected to an ECU (Electric Control Unit) connected to a CAN bus (Controller Area Network bus) of a CAN installed in the towing vehicle.

The ECU for controlling the rear view mirror actuators of the towing vehicle picks up information supplied to the CAN bus from corresponding sensors or detectors concerning steering wheel movements, vehicle speed and whether a towed vehicle is connected or not.

In response to picked-up information about the facts that a towed vehicle is connected, that the steering wheel movement exceeds a predetermined value, and that the speed is lower than a predetermined value, the ECU supplies corresponding currents to the rear view mirror actuators to adjust the position of the respective rear view mirror.

Should the vehicle speed be higher than that pred...