PORTABLE SMALL-SIZED AUTOMATIC SUNLIGHT TRACKING APPARATUS USING PHOTOCOUPLER

摘要

PROBLEM TO BE SOLVED: To provide an automatic sunlight tracking apparatus which can accurately track sunlight by placing two pairs of small-sized solar batteries for sensors side by side, opening only one surface of a space whose bottom surface is made to serve as each small-sized solar battery, surrounding remaining five surfaces by a shielding plate and keeping the space always dark, and can be miniaturized by using the drive system of a tangent screw system.;SOLUTION: By surrounding the five surfaces of the space whose bottom surface is made to serve as the small-sized solar battery for the sensor by the shielding plate, an output is accurately obtained by a small incidence change of the sunlight. The output is directly processed in the photocoupler, and a driving circuit and a driving device are constituted with a small number of components.;COPYRIGHT: (C)2009,JPO&INPIT