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应用光-压转换技术的高分辨率触觉传感器已经研制出来。传感系统由一透明的聚丙烯板、一弹性片、一由塑料纤维构成的光导和—32×16的光电管列阵组成。作为敏感面的弹性片置于聚丙烯板(56mm×117mm)上。经光导传导的光照射在聚丙烯板一端上。若无压力作用在弹性片上,这束光传到板上发生内部全反射。作用在弹性片上的压力引起聚丙烯板与弹性片间的光敏接触,因而内部全反射条件变化,光照在弹性片上。弹性片把光散射回到受力区域,受力面图形可通过光电管列阵观察。列阵输出结果连续传送到计算机进行触觉图象处理。这一估值实验表明系统工作正常。
High resolution tactile sensors using light-to-voltage conversion technology have been developed. Sensing system consists of a transparent polypropylene plate, a flexible sheet, a light guide made of plastic fibers and -32 × 16 array of phototube. The elastic sheet as a sensitive surface was placed on a polypropylene plate (56 mm × 117 mm). The light-conducting light shone on one end of the polypropylene plate. If there is no pressure on the elastic sheet, the beam reaches the board internal total internal reflection. The pressure on the elastic sheet causes the photosensitive contact between the polypropylene sheet and the elastic sheet, so the internal total reflection condition changes, and the light shines on the elastic sheet. Elastic sheet to scatter light back to the force region, the force plane graphics can be observed through the phototube array. The output of the array is continuously transmitted to the computer for haptic image processing. This valuation experiment shows that the system is working properly.