Positioning Control of the Large Electric Flatcar via a Web Browser in Combination with Another System

Target strength (TS) of fish is an important parameter when we convert acoustic integration values obtained during acoustic surveys into estimates of fish abundance. The target strength pattern is measured by combining the rotation system for tilting the aspect of the sample with the echo data acquisition system using underwater ultrasonic waves. A user interface of network architecture was designed for collaborative use with researchers working in other organizations. The flexible network architecture is based on a web direct-access model for the rotation system. The user interface can monitor and control the rotation system via a web browser that is installed in any PC (personal computer) as a terminal. However, previously the combination of those two systems was performed not by using a web browser but by an exclusive interface program. Here we propose a connection model which provides indirect communication via DCOM (Distributed Component Object Model) server between these two systems. The connection model is added in the web direct-access model. This connection model can perform automatic measurements and allow combined manipulation between the rotation system and the echo measurement per degree via a web browser. In this paper, this connection model is detailed and was successfully implemented to the measurement system of an electric flatcar in a large tank.