Abstract: A camera module structure, comprising: an upper housing (1) and a lens (2). The upper housing (1) comprises an accommodating part (11); the lens (2) is mounted in the accommodating part (11). The structure further comprises a circlip (3). The circlip (3) comprises a press part (31) and a clamp part (32). A guide groove (12) is provided on the upper housing (1). A clamp groove (21) is provided on the external peripheral wall of the lens (2). The clamp part (32) is engaged in the clamp groove (21) of the lens (2) along the guide groove (12). The camera module structure is convenient to assemble, and compared with screw connection, adhesive connection and other modes, problems such as vibration, falling-off and fracture would not happen, the imaging quality is good, and the service life is long.

Abstract: A farmland reference crop evapotranspiration prediction method based on uncertainty of meteorological factors, includes: S1. acquiring a set number of groups of weather forecast data of a prediction region within a preset time period; S2. inputting each group of weather forecast data into a Bayesian probability forecast system to obtain corrected weather forecast data; and S3. inputting each group of the corrected weather forecast data into a trained RBF neural network, and predicting to obtain a farmland reference crop evapotranspiration. In the present invention, the Bayesian probability forecast system is configured to correct the weather forecast data and eliminate uncertainty of weather forecast data to obtain the accurate reference crop evapotranspiration forecasted by the RBF neural network using these data.

Abstract: A method and system for generating a variable rate irrigation (VRI) prescription map for a large sprinkler irrigation system is provided. The method includes: determining a minimum length of a VRI management zone along a truss direction of the sprinkler irrigation system; determining a minimum angle of the VRI management zone along a travel direction of the sprinkler irrigation system; dividing the VRI management zone to generate a VRI management zoning map; determining, according to a basic irrigation amount of VRI management and a spatial distribution map of crop water deficit or a spatial distribution map of soil water holding capacity (SWHC), an irrigation quota of each management sub-zone; and generating, according to a distribution map of irrigation quotas of all management sub-zones in combination with a travel speed of the sprinkler irrigation system and a duty cycle of a solenoid valve, the VRI prescription map.

Abstract: The invention relates to the field of biomedicine. In particular, the invention relates to a live strain of Staphylococcus aureus and uses thereof. More particularly, the invention relates to a live strain of Staphylococcus aureus which lacks adenosine synthase A (AdsA) activity, to a vaccine against Staphylococcus aureus infection comprising said live strain, and a method for preventing and/or treating Staphylococcus aureus infection in a subject by administering said live strain.

Abstract: A system and method for optimal allocation of agricultural water based on water consumption control are provided. The system includes a data management module, configured to store and manage data related to water allocation; a basic data statistics module, configured to take statistics on various stored data; an agricultural evapotranspiration (ET) calculation module, configured to calculate an agricultural ET based on the stored data and statistical data; and a water resource allocation module, configured to generate a corresponding water resource allocation scheme based on an agricultural ET of each water consumption unit and corresponding data. Surface water and groundwater are jointly allocated to reduce groundwater exploitation, increase groundwater recharge, reduce invalid water loss and consumption in a carrying and allocation process, and improve an output benefit of agricultural water supply.

Abstract: Through exploration of the characteristics of a crop canopy structure and the variation laws in the crop development processes, a three-dimensional crop canopy structure model and a dynamic maize growth simulation are established by fusing the three-dimensional crop canopy structure model. The model describes the crop growth and development stages by adopting growing degree-days, carries out dynamic simulation on a two-dimensional maize canopy structure by adopting a Logistic equation, and characterizes veins, leaf margin and the like by adopting a spatial topological structure. On this basis, a dynamic simulation method for a three-dimensional spatial crop canopy structure is finally established, the coupling simulation of multiple hydrothermal carbonization processes in a complex farmland ecosystem is realized, and thus the simulation capability and universality of the crop model are effectively improved.

Abstract: A 3D test chart, an adjusting arrangement, a forming method, and an adjusting method thereof are disclosed. The 3D test chart provides a plurality of test patterns arranged at different depths. When testing a photographic arrangement, the photographic arrangement is only required to move for one time or even does not need to be moved, so as to obtain an image containing information of different depths, so that the testing and adjusting process of the photographic arrangement can be easily achieved.

Abstract: A camera module structure, comprising: an upper housing (1) and a lens (2). The upper housing (1) comprises an accommodating part (11); the lens (2) is mounted in the accommodating part (11). The structure further comprises a circlip (3). The circlip (3) comprises a press part (31) and a clamp part (32). A guide groove (12) is provided on the upper housing (1). A clamp groove (21) is provided on the external peripheral wall of the lens (2). The clamp part (32) is engaged in the clamp groove (21) of the lens (2) along the guide groove (12). The camera module structure is convenient to assemble, and compared with screw connection, adhesive connection and other modes, problems such as vibration, falling-off and fracture would not happen, the imaging quality is good, and the service life is long.

Abstract: A light-deflection three-dimensional imaging device, a projection device, and the application thereof are disclosed. The light-deflection three-dimensional imaging device includes a projection device, a receiving device and a processor. The projection device includes a light source, a grating, a condensing lens group, a light deflection element and an emission lens, wherein after the modulation by the grating, the aggregation by the condensing lens group and the deflection by the light deflection element, the projection light transmitted by the light source penetrates the emission lens and is emitted from a side surface of the projection device.

Abstract: A farmland reference crop evapotranspiration prediction method based on uncertainty of meteorological factors, includes: S1. acquiring a set number of groups of weather forecast data of a prediction region within a preset time period; S2. inputting each group of weather forecast data into a Bayesian probability forecast system to obtain corrected weather forecast data; and S3. inputting each group of the corrected weather forecast data into a trained RBF neural network, and predicting to obtain a farmland reference crop evapotranspiration. In the present invention, the Bayesian probability forecast system is configured to correct the weather forecast data and eliminate uncertainty of weather forecast data to obtain the accurate reference crop evapotranspiration forecasted by the RBF neural network using these data.

Abstract: An agricultural water-saving planning method based on a remotely-sensed ET includes the following steps: S1: determining an agricultural target ET of a crop; S2: establishing an agricultural water-saving planning model based on the agricultural target ET of the crop, and planning a planting area of the crop of a whole county to obtain a county-level planning scheme; and S3: decomposing the county-level planning scheme to township-level governments and further to village-level units for execution and supervision. The new method realizes the balance between real regional agricultural water consumption and actual water supply.

Abstract: A system and method for optimal allocation of agricultural water based on water consumption control are provided. The system includes a data management module, configured to store and manage data related to water allocation; a basic data statistics module, configured to take statistics on various stored data; an agricultural evapotranspiration (ET) calculation module, configured to calculate an agricultural ET based on the stored data and statistical data; and a water resource allocation module, configured to generate a corresponding water resource allocation scheme based on an agricultural ET of each water consumption unit and corresponding data. Surface water and groundwater are jointly allocated to reduce groundwater exploitation, increase groundwater recharge, reduce invalid water loss and consumption in a carrying and allocation process, and improve an output benefit of agricultural water supply.

Abstract: An Internet-of-Things-based crop growth monitoring device includes a plurality of monitoring mechanisms. Each monitoring mechanism includes a base and a support rod fixed on the base. The support rod is provided with an electric element installation casing formed by snap-fitting an upper conical cover and a lower conical cover. A component for driving a swing cantilever to rotate is provided on the support rod at a position near a lowermost surface of the upper conical cover. A plurality of distance measuring laser sensors are provided on the swing cantilever. A component for driving an ultra-high-definition camera to rotate is provided on the support rod at the section of the upper conical cover. The images captured by the ultra-high-definition camera is used to obtain the leaf growth situation of the crops, and the data collected by the distance measuring laser sensors is used to determine the plant height of the crops.

Abstract: According to an irrigation method based on water usage characteristics and real-time weather condition during different crop growth stages, whether the crops are in a shortage of water in the growth is determined based on an actual soil water content, a water usage amount of the crops during the given growth stage, and a rainfall amount during the next day. If the shortage of water occurs, the actual water usage amount of the crops is calculated, and a water pump can be self-adaptively turned on to water the crops and an administrator is informed when the reservoir has an insufficient water storage, according to the relation between the water storage amount of the reservoir and the actual water usage amount.

Abstract: A 3D test chart, an adjusting arrangement, a forming method, and an adjusting method thereof are disclosed. The 3D test chart provides a plurality of test patterns arranged at different depths. When testing a photographic arrangement, the photographic arrangement is only required to move for one time or even does not need to be moved, so as to obtain an image containing information of different depths, so that the testing and adjusting process of the photographic arrangement can be easily achieved.

Abstract: A 3D test chart, an adjusting arrangement, a forming method, and an adjusting method thereof are disclosed. The 3D test chart provides a plurality of test patterns arranged at different depths. When testing a photographic arrangement, the photographic arrangement is only required to move for one time or even does not need to be moved, so as to obtain an image containing information of different depths, so that the testing and adjusting process of the photographic arrangement can be easily achieved.

Abstract: A method for establishing a monitoring model of a water content of a winter wheat canopy based on spectral parameters, includes the following steps: measuring a spectral reflectance and a water content of the winter wheat canopy; constructing the spectral parameters through the spectral reflectance; wherein, the spectral parameters comprise spectral transformation forms and “trilateral” parameters; performing correlation analysis on the water content of the winter wheat canopy and the spectral transformation forms and the trilateral parameters, selecting comprehensive spectral parameters with a significant correlation for each growth stage, performing principal component analysis on the comprehensive spectral parameters, separately constructing a water content monitoring model for each growth stage, and combining the water content monitoring model for each growth stage into the monitoring model of the water content of the winter wheat canopy for the whole growth stage.

Abstract: A method for establishing a monitoring model of a water content of a winter wheat canopy based on spectral parameters, includes the following steps: measuring a spectral reflectance and a water content of the winter wheat canopy; constructing the spectral parameters through the spectral reflectance; wherein, the spectral parameters comprise spectral transformation forms and “trilateral” parameters; performing correlation analysis on the water content of the winter wheat canopy and the spectral transformation forms and the trilateral parameters, selecting comprehensive spectral parameters with a significant correlation for each growth stage, performing principal component analysis on the comprehensive spectral parameters, separately constructing a water content monitoring model for each growth stage, and combining the water content monitoring model for each growth stage into the monitoring model of the water content of the winter wheat canopy for the whole growth stage.

Abstract: An Internet-of-Things-based crop growth monitoring device includes a plurality of monitoring mechanisms. Each monitoring mechanism includes a base and a support rod fixed on the base. The support rod is provided with an electric element installation casing formed by snap-fitting an upper conical cover and a lower conical cover. A component for driving a swing cantilever to rotate is provided on the support rod at a position near a lowermost surface of the upper conical cover. A plurality of distance measuring laser sensors are provided on the swing cantilever. A component for driving an ultra-high-definition camera to rotate is provided on the support rod at the section of the upper conical cover. The images captured by the ultra-high-definition camera is used to obtain the leaf growth situation of the crops, and the data collected by the distance measuring laser sensors is used to determine the plant height of the crops.

Abstract: According to an irrigation method based on water usage characteristics and real-time weather condition during different crop growth stages, whether the crops are in a shortage of water in the growth is determined based on an actual soil water content, a water usage amount of the crops during the given growth stage, and a rainfall amount during the next day. If the shortage of water occurs, the actual water usage amount of the crops is calculated, and a water pump can be self-adaptively turned on to water the crops and an administrator is informed when the reservoir has an insufficient water storage, according to the relation between the water storage amount of the reservoir and the actual water usage amount.