1P1-D18 移動ロボットのレーザナビゲーションのためのLEDドットマトリクスを用いた光センサアレイの開発

概要

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A laser navigation system is now being developed for a mobile robot with an optical sensor array to detect the laser irradiated toward the ground for following the speci ed route. According to the previous experiments, the optical sensor array has to be bigger to obtain a higher precision, because such an array is composed of phototransistors. Note however that more photo transistors are required as the sensor becomes larger, and therefore the cost and maintenance trouble becomes more serious. In this study, an LED dot matrix that is generally used for a display is selected as a photo detecting element. An optical sensor array can be constructed and its maintenance is easy, if the LED dot matrix can be used as a photo detecting element. Furthermore, it can change the array shape by using the socket, depending on the operational conditions. This paper reports the implementation and some experimental results.