Design of automatic and uniform feeding system carried by workboat and effect test for raising river crab

In order to solve the feeding problem in river crab aquaculture such as high labor intensity, low automation and non-uniform feed distribution, an automatic air propeller driven feeding system carried by a workboat and uniform feeding method was proposed. The system is mainly composed of a workboat driven by air propellers, automatic feeding device, ARM (advanced RISC machine) main controller, GPRS (general packet radio service) communication module and GPS (global positioning system) navigation device. A air propeller driven device was designed to solve the effect of waterweeds intertwine with underwater propellers of common workboat on sailing, and an automatic feeding device equipped with the flow velocity controllable bait feeder, distance adjustable thrower and quantity of feed in the bin measurable device was designed to solve the problem of non-uniform distribution of the feed. The results showed that the automatic feeding system can obtain good uniform feeding effect by working with the optimal operat