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Librarian Robot Controlled by Mathematical AIM Model
Masahiko Mikawa,Masahiro Yoshikawa,Takeshi Tsujimura,Kazuyo Tanaka 제어로봇시스템학회 2009 제어로봇시스템학회 국제학술대회 논문집 Vol.2009 No.8
This paper presents a librarian robot that has sleep and wake functions. This robot is equipped with a laser range finder for tracking library users’ behaviors, a microphone for conversation with a user and a stereo vision. A lot of processes run in parallel in this system, operations of these processes are controlled by our proposed mathematical Activation-Input-Modulation (AIM) model, that can express consciousness states, such as wake or sleep based on stimuli detected by the external sensors. In a waking state, sensory information with stimuli is mainly processed. In a sleep state, most processing is paused, or information stored in memories during waking is mainly processed. Moreover, this system has two kinds of memories. One is a memory stored when external stimuli are detected, the other is a memory stored when no stimulus is detected. Both dynamic and gradual changes of sensory information can be stored by these functions.
High-Resolution Optical Measurement of Fiber Optics Transmission Line Length
Takeshi Tsujimura,Koichi Yoshida,Kuniaki Tanaka,Kazunori Katayama,Yuji Azuma,Masahiko Mikawa 제어로봇시스템학회 2009 제어로봇시스템학회 국제학술대회 논문집 Vol.2009 No.8
This paper studies a frame-loss-free shunt system for broadband optical fiber transmission lines. This system switches transmitting optical pulses between duplicated optical fibers to avoid any interruption to communication. A high-resolution measurement technique is necessary to evaluate the optical fiber length. We applied an interferometry technique to adjust 15 km duplicated optical lines at a resolution of 10 mm. An optical line switching system and procedure are designed for use in replacing in-service optical lines. A free space optics (FSO) system adjusts the length of an in-service optical line by up to 100 m. A gigabit ether-passive optical network (GE-PON) line is successfully replaced with an extended line while maintaining transmission.