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In order to solve the feeding problem of circulating aquaculture, the author designed a walking device for granular feed, which mainly includes walking mechanism, feeding mechanism, transmission mechanism and reversing mechanism. The walking feeding device is convenient to feed for multiple breeding barrels, improves the feeding efficiency and reduces the working intensity.

Artificial feeding is still widely used by small and medium-sized farmers in aquaculture, which requires a large labor cost and cannot guarantee the feeding efficiency. A mobile, low-cost, simple and practical feeding device for aquaculture feed was designed, including the overall scheme, the design of silo, feeding bucket, feeding mechanism and other mechanical structures. The feeding device can reduce the cost of aquaculture and improve the feeding efficiency.

A computer-controlled stroboscopic interferometer technique for measuring surface shape map and out-of-plane-deflections and static voltage versus displacement curve and resonant frequency is introduced.In-plane displacement of MEMS deformable mirrors is measured using the stroboscopic imaging and the computer microvision system and technique of sub-pixel location based on least-square curved surface fitting algorithm.The techniques of stroboscopic imaging and a five-step phase-shifting interferometer are used to obtain wrapped phase.The phase unwrapping algorithm is established to recover true phase which stands for object surface height.Consequently,the static and dynamic characteristics of MEMS deformable mirrors are obtained.The testing results show that the stroboscopic interferometer technique has the advantages of fast measuring speed and high measuring accuracy and realizing automatic control easily.