Estimation of Performance of Communication in Web Based Control for Electric Flatcar
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The information of target strength (TS) is indispensable to the acoustic estimation of the existing biomass of the important small oceanic organisms. A large tank has been used for target strength pattern measurements of fish. It is equipped with an electric flatcar. Further an elevation-rotating unit runs on the rails above it. The probe on the top of its elevation unit is equipped with an attachment for an ultrasonic transducer. The manipulator probe is movable in the four directions of the x, y, z and thetas axes. Installation of a remote control switch has been required for the purpose of efficient operation of an electric flatcar. A remote control system using a notebook personal computer has been developed with good cost performance. The PC is equipped with a wireless network interface. A model of web direct-access monitoring has been designed newly on the basis of the concept that an operator can control a mechanical device using a web browser via LAN. Furthermore it performs an exclusive control for access from multi PCs, and has made possible a controller and multiple-monitors system. The large electric flatcar is cut out for minute movement. So the function of JOG mode has been newly developed, and an external interface of the electric flatcar is applicable to the new protocol developed for web browser control. The time chart of network communication has been examined for the purpose of evaluation of web operation. The result has made clear the specifications for motion.
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