Abstract: A vision acquisition system equipped in an intelligent terminal of a smart logistics vehicle is disclosed. The vision acquisition system includes an image information acquisition unit, an angle information acquisition unit, a vehicle information acquisition unit, an image information analysis unit and a calculation unit. The image information acquisition unit includes a ground image acquisition module and a feature point identification module; the ground image acquisition module acquires a ground image in front of a vehicle through a camera; and the feature point identification module is used for identifying contour information of the image and mark a near point and a far point of the image. In implementation of the present invention, a road surface in front of the driving vehicle can be acquired.

Abstract: A PEGylated rapamycin compound and a preparation method therefor and an application thereof. The compound is represented by Formula (I), wherein n is 10-150. The preparation method is as follows: mPEG-COOH is dissolved in an organic solvent, catalysts EDC·HCl and DMAP, and RAPA are added, and the reaction is performed by stirring at 0-40° C. in the dark. An application of the compound and pharmaceutical preparations thereof in the preparation of a drug for reducing immune response can effectively inhibit the production of anti-drug antibodies of biological drugs such as urate oxidase, has good clinical application prospects, and is especially suitable to be prepared into a nano-drug.