43 results about "Tree canopy" patented technology

The embodiment of the invention discloses a tree canopy spray collecting and processing system and method. The system comprises a spraying monitoring device, at least two fog drop collecting devices and a server; the spraying monitoring device is configured to send a fog drop collecting starting instruction to the fog drop collecting devices if it is monitored that spraying operation equipment reaches a target spraying area of a target tree canopy to start spraying operation; the fog drop collecting devices are configured to respond to the fog drop collecting starting instruction and effectively collect fog drops at the corresponding canopy part, and shooting to obtain a target fog drop image under the condition that fog drop collecting is stopped; and the server is configured to analyze the deposition coverage rate and the deposition density of the fog drops in the target fog drop image, determine the effective fog drop collecting duration of the fog drop collecting devices at the corresponding canopy part, and determine the unit time deposition coverage rate and the unit time deposition density of the corresponding canopy part for evaluating the spraying effect of the target treecanopy. By the adoption of the scheme, effective fog drops can be collected at all canopy positions, and inaccurate measurement and analysis caused by too many collected fog drops are avoided.

The invention discloses a profiling variable sprayer based on plant canopy phenotype and an adaptive control method. The profiling variable sprayer includes a profiling mechanism module A, a profiling mechanism module B, a lifting and sliding module, a profiling bracket module, Liquid supply system, electrical box and detection module; on the basis of dividing the function and mechanism of the profiling sprayer, it adopts a modular and lightweight design. The whole machine has the characteristics of compact structure, lightness and flexibility, easy manufacture and easy maintenance. . The adaptive control method of the profiling variable sprayer automatically collects the ultrasonic echo signal and processes it to obtain the characteristic information of the tree canopy, and then calculates the air volume according to the canopy volume and canopy density phenotype characteristic parameters, The spray volume is calculated by the leaf area density phenotypic characteristic parameters; the profiling control amount calculated by the ultrasonic distance measurement information drives the profiling mechanism to profil, and realizes the automatic profiling of the crown contour, with high profiling accuracy, accurate and efficient spraying, Save medicine and environmental protection, easy to operate.

The invention discloses a street tree target recognition method based on vehicle-mounted 2D LiDAR point cloud data, which includes using the vehicle-mounted 2D LiDAR system to obtain street data, saving it as a point cloud file, marking the point cloud file with tree crowns and non-tree crown categories; constructing a variable scale Grid, extract the three-dimensional spherical domain from the variable-scale grid; calculate the point cloud feature vector in the three-dimensional spherical domain, and obtain the point cloud feature vector set; the SVM algorithm learns the tree crown point cloud classifier from the point cloud feature vector set; according to the tree crown point cloud The classifier performs online recognition on the point cloud frame to obtain the spray prescription map. The invention adopts the vehicle-mounted 2D LiDAR with small data redundancy and easy online processing to acquire urban street data, and provides accurate spray basis for target application. Establish a point cloud sequence spatial index structure that preserves data accuracy, improves neighborhood retrieval efficiency, and meets online processing requirements to achieve accurate identification of street tree targets.