A methodology for the design of complex computer systems in agriculture and aquaculture

A methodology was created for the integration of agricultural systems and computer control systems. A microcontrolled system was developed to demonstrate that the methodology could be used to design complex computer systems. The system was integrated through a distributed network and linked to a PC for human interface interaction. The methodology was developed as a systematic way to design a system that involves non-stationary dynamic processes. A seven-step approach breaks the system up into sub-models, analyzes each model, compares their interactions and then recombines them into a complete system.; The system was designed to complete an aquacultural grow-out cycle of the species Tilapia. An aquaculture model was chosen because of its varied parameters and harsh environment. The growing of fish presents a varied environment that needs constant monitoring and control to maintain quality. The system consisted of three microcontroller units and a PC. A process of system development was used to combine both the control of the systems components and their interactions into one complete system. Software was developed to interface all of the units and the PC. The system was run under varying conditions and tested for failure modes. It proved to be adequate for most failures and adapted to conditions, as dynamics required. The seven-step methodology provided the systematic approach to the development of the complete process.