| Summary: | 碩士 === 國立臺灣大學 === 農業機械工程學系研究所 === 86 === The purpose of this study was to improve the control of the superintensive
water recirculating eel production system. First, to improve the indoor
environment by isolating the heat, reducing the temperature, and ventilating.
In the mean time, by monitoring the water and improving the method of oxygen
supply, we develop a computerized supervisory control and data acquisition
(SCADA) system.
Using the monitor and control system developed in this study,a long-term
data acquisition was conducted. By analyzing the data, we find out some
relationships between eels'' behavior and the water quality can be identified.
The information revealed can be very helpful in modifing control strategy and
improving the mangement of eel''s culture.
Several sensing devices were used to identify the presents of the eel
within a specific range. Among all the sensors tested, photo-inducing sensor
has the best result. The sensor sends out pulse output signal whenever the
presents of the eel was detected. By using this sensor, the exact time to
stop feeding.
A locally make windows-based process control software was used to develop
the user interface of the control system. The user interface developed is
easy to use and is capable of retrieving seriodically stored information for
on-line or afterward analysis. The software also makes fully use of the
capability of the network to allow supervisory control and data aquestion on
the indoor environment and the water quality of the aquaculture.
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