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Abstract:
To increase the operating efficiency and driving safety, it has becoming an indispensable strategy for many automobile makers in the world to design a new external automotive rear view mirror. This paper presents a new controller of the proposed system based on an independent microcomputer electronic control unit (ECU). Not only is dual-axis inclined angles adjustment function still kept for user, but also two novel operating methods are involved together with the conventional one. A microcomputer-based ECU is in conjunction with both the dc-motor driving circuit and two pairs of inclined angle sensory circuit to form a close-loop controlling structure. Since the dual-axis inclined angle fast memory and restoration functions are embedded in the ECU of the proposed system leading to no patent problem with the other automobile makers in the world. The other operating issues such as the distance between the user's and the mirror too long are overcome. For experimental convenience purpose, a prototype of new proposed system was established in the laboratory. Some experiments were carried out by using the experimental prototype under different conditions. Finally, experimental results showed that the designed and implemented controller with fast memory and restoration functions of the proposed system is actually feasible.
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