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In order to solve the problem that the air flow was not average in the baking room, a new type of device called air flow-divider by this paper was designed. The physical model of the device was built by Solidworks. The influence of the device towards air flow was simulated by FloXpress. The result of the simulation indicates that the air flow was more even in the baking house after the new device was fixed.

Digital filter technology is quite important in the signal processing field. This paper realizes digital filter designing by way of the virtual instrument technology, and this paper introduces the filter plat front panel and program frame diagram designing based on the FIR filter algorithm through the LabVIEW platform. Through the simulation, the virtual digital filter validates the designing accuracy. The digital filter achieves the ideal effect in filtering, which can be widely applied into the signal processing field, such as digital de-nosing, and experimental study, etc. Digital filter panel designing has broad application prospect and research value.