Analog-Digital Circuit for Motion Detection Based on Vertebrate Retina and Its Application to Mobile Robot

We proposed in this study the simple analog-digital circuits for detecting motion direction based on information processing of the vertebrate retina. The array of the circuits was applied to the mobile robot. The test circuit was fabricated by discrete metal oxide semiconductor (MOS) transistors on the breadboard. The measured results of the test circuit showed that the unit circuit can output the motion signal. The motion sensor for detecting the movement direction constructed with array of the unit circuits was connected with the microcomputer introduced in the mobile robot. It was clarified that the proposed circuits can control the mobile robot.