Jiangsu University

Nanjing University of Posts and Telecommunicatins

Jiangsu University of Science and Technology

Hui Liu

Wei Huang

Chunyan Ji

Jianting Guo

Yue Shen

Jie Cui

Fali Huo

Linghai Xie

Ying Wei

Zichao Li

Taoran Zhou

Quanyou Feng

Jinming Chen

Chunxiao Zhong

Xuan Zhang

Dongqing Lin

Yunpeng Duan

The present disclosure provides a variable-rate spray control system based on an annular application structure and a tree canopy volume (TCV) calculation method thereof. The TCV calculation method includes: acquiring in real time, by using vertical/horizontal scanning two-dimensional (2D) LiDAR, point cloud data of a variable-rate sprayer in motion in an orchard environment; acquiring speed information of the variable-rate sprayer by using a speed sensor; dividing spraying regions according to an angle at which contacts of nozzles on an annular application structure are mutually spaced on an arc; filtering interferences by setting a threshold range, calculating a sector area of a tree canopy according to trunk distance information from the horizontal LiDAR and point cloud information from the vertical LiDAR within the threshold range, and calculating a TCV in combination with the information of the speed sensor and a scanning cycle of the vertical LiDAR.

Variable-rate spray control system based on annular application structure and tree canopy volume calculation method thereof

The present invention provides an organic nano-grid, a nano-polymer thereof and a preparation method therefor. The organic nano-grid has a general formula (I), and the nano-polymer has a general formula (II), wherein Ris an alkyl chain, Ris halogen or an electroactive group, and X may comprise a heteroatom such as N, O and S, and n is a natural number from 1 to 10. A nano-connection strategy is applied to the construction of a one-dimensional nano-polymer. The polymer starts from a monomer ABto form a corresponding nano-polymer by a Friedel-Crafts polymerization cyclization reaction.

Organic nano-grid, nano-polymer thereof and preparation method therefor

The present invention discloses a quickly-detachable airbag-type floating breakwater, including a plurality of water wave absorbing structure units arranged along a length direction of the breakwater. The adjacent water wave absorbing structure units are connected by a connecting unit. The water wave absorbing structure unit comprises at least two floats arranged side by side and a wave absorbing plate located between the floats. The water wave absorbing structure unit comprises at least two floats arranged side by side and a wave absorbing plate located on the floats. The connecting unit comprises bases located at the ends of the floats, an airbag located between the adjacent bases, and a steel chain, the adjacent bases wrapping the airbag to form a buffer connecting structure.

Quickly-detachable airbag-type floating breakwater

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Jiangsu, China

Hui Liu