In this paper, fundamental constitution of micro compound eye sensor, and a method to measure 3D position of an object by two compound eye sensors are proposed. Milli-machines and micromachines are becoming more and more important these days, and thus the improvement of micro vision sensor is required. This paper aims to improve an artificial compound eye sensor which imitates insect's vision system. A simple compound eye sensor which consists of photo sensors and a simple cover is proposed. The method to measure 3D position is verified by experiments using a macro-model of the compound eye sensor.
Three-dimensional computer graphics (CG) has been applied to the planning and design of watch products at Seiko Epson since 1994. The purpose is to shorten product development cycles by eliminating physical trial assembly. Chief technical characteristics are creation of material color parameters for watches and modeling 3D objects which makes it possible to start mass production immediately. About 30 models have been made using this CG method. We obtained good results in shortened times for the planning and design of watch products. Based on these results, we judged it possible to apply CG to special product categories such as low-priced consumer models requiring very quick market entry. In this article, we describe CG application I term of technical approach and business processes.
SEIKO PULSE GRAPH is a pulse rate monitor for running training. This can be realized by the development of a blue sensing system and a twin FFT system. We have already published a blue sensing system to get a high S/N ratio^(1). The twin FFT system can separate pulse rate from motion noise that is generated during running. So we could realize the real-time pulse rate monitor system in the size of a watch. This paper describes the electronic circuit for a twin FFT system and an algorithm of measuring pulse rate.