Abstract: A top-down construction type assembly construction method for paved road surface, including the following steps: step I, manufacturing prefabricating slabs: using a top-down method to manufacture the prefabricating slabs, and providing bolt sleeves, inside the prefabricating slabs, which are evenly arranged in the prefabricating slabs; step II, mounting the prefabricating slabs: on a lower bearing plate, placing the prefabricating slabs in one step, performing a fine tuning on a position and an altitude of the prefabricating slabs, performing a grouting construction, finally forming the paved road surface; the prefabricating slabs are manufactured by laying bricks and pouring concrete, the prefabricating slabs are rolled over and mounted, thus eliminating on-site concrete bonding between bricks and the lower bearing plate, improving overall stability of the bricks and the prefabricating slabs after being mounted, assembled mounting for a paved road surface is implemented, and the construction period is shorte

Abstract: A top-down construction type assembly construction method for paved road surface, including the following steps: step I, manufacturing prefabricating slabs: using a top-down method to manufacture the prefabricating slabs, and providing bolt sleeves, inside the prefabricating slabs, which are evenly arranged in the prefabricating slabs; step II, mounting the prefabricating slabs: on a lower bearing plate, placing the prefabricating slabs in one step, performing a fine tuning on a position and an altitude of the prefabricating slabs, performing a grouting construction, finally forming the paved road surface; the prefabricating slabs are manufactured by laying bricks and pouring concrete, the prefabricating slabs are rolled over and mounted, thus eliminating on-site concrete bonding between bricks and the lower bearing plate, improving overall stability of the bricks and the prefabricating slabs after being mounted, assembled mounting for a paved road surface is implemented, and the construction period is shorte

Abstract: A control system receives image data of a portion of a field, where the image data comprises a plurality of pixels each representing a three dimensional (3D) coordinate in the field. The control system applies an obstruction identification model to the image data to identify an obstruction in the field. The obstruction identification model determines a seed segment for the field portion and determines a detection ground plane by extrapolating a seed segment to the 3D coordinates of the plurality of pixels. The obstruction identification model identifies a set of pixels of the plurality of pixels that have three dimensional coordinates above the detection ground plane as the obstruction. The control system executes an action for the farming machine to avoid the obstruction in the field based on the obstruction identification model's identification of the obstruction.

Abstract: A double-joint sickle knife for an endoscopy therapy includes a knife head, a knife base, a knife body, an outer sheath, a guide wire, a handle and a sliding rod. The knife head is connected with one end of the knife base by a transverse joint, and the other end of the knife base is connected with a head end of the knife body by a longitudinal joint. The outer sheath is sleeved on the outside of the knife body and capable of sliding along the knife body. The tail end of the knife body is connected with one end of the handle, and a sliding rod for adjusting the transverse joint is arranged on the handle. The guide wire is electric conductive. One end of the guide wire is connected with the knife head, and passes through the knife base, the knife body, the handle and the sliding rod successively. The other end of the guide wire is connected with the power port.

Abstract: A double-joint sickle knife for an endoscopy therapy includes a knife head, a knife base, a knife body, an outer sheath, a guide wire, a handle and a sliding rod. The knife head is connected with one end of the knife base by a transverse joint, and the other end of the knife base is connected with a head end of the knife body by a longitudinal joint. The outer sheath is sleeved on the outside of the knife body and capable of sliding along the knife body. The tail end of the knife body is connected with one end of the handle, and a sliding rod for adjusting the transverse joint is arranged on the handle. The guide wire is electric conductive. One end of the guide wire is connected with the knife head, and passes through the knife base, the knife body, the handle and the sliding rod successively. The other end of the guide wire is connected with the power port.