Abstract: A method for measuring an antenna downtilt angle based on a deep instance segmentation network is disclosed, including: shooting an omni-directional antenna video using a drone; and transmitting the antenna video to a server in real time, and the server measuring an antenna downtilt angle in real time using a deep learning algorithm, the deep learning algorithm includes: a feature extraction network module for acquiring an antenna feature image; an instance segmentation module for binary segmentation of an antenna image and the background to distinguish antenna image pixels from background pixels; an antenna candidate box module for identifying and detecting the antenna image, acquiring an antenna candidate box and determining an antenna calibration box therefrom; and an antenna downtilt angle measuring module for measuring an antenna downtilt angle.

Abstract: Disclosed is a method for measuring an antenna downtilt based on a multi-scale detection algorithm, including: capturing an image of an antenna using an unmanned aerial vehicle, and returning data to a server in real time; obtaining a ground truth box where the antenna is located by performing the multi-scale detection algorithm of a server; segmenting the ground truth box based on an antenna target segmentation algorithm of the server; and obtaining an antenna downtilt angle based on an antenna downtilt measurement algorithm of the server and determining whether the antenna properly functions. This method avoids the danger of tower worker climbing, is fast and accurate, saves labor costs and time, and ensures the measurement of an antenna downtilt to be smoother.

Abstract: A method and a device for acquiring three-dimensional coordinates of ore based on mining process are disclosed. The method includes: obtaining a two-dimensional coordinate of the ore by using a YOLACT algorithm and a NMS algorithm to obtain a prediction mask map, obtaining depth information of the ore based on the color map and the infrared depth map, and combining the two-dimensional coordinate with the depth information to obtain a three-dimensional coordinate of the ore.

Abstract: Disclosed are a generator and a condensing system. The generator, a rectifier, a condenser, an evaporator, an absorber and a liquid storage tank are sequentially connected to form a loop, a gas outlet chamber is communicated with the rectifier by a lifting pipe, and a liquid conveying pipe is arranged between a heating chamber and the liquid storage tank. The generator includes the heating chamber and the gas outlet chamber, wherein the gas outlet chamber is connected with the lifting pipe, and has a width gradually reduced in a gas outlet direction.

Abstract: Disclosed are a method and an apparatus for multi-scale SAR image recognition based on attention mechanism. According to the method, a whole image recognition network is adjusted by training a SAR training image by an attention prediction subnet, a region-of-interest positioning subnet and an image classification subnet in combination with a network loss, which greatly improves a network performance; and in addition, an attention prediction map is generated by attention mechanism to position a most prominent feature part in the SAR image, which greatly eliminates a redundancy of image features in a machine vision, effectively determines a region-of-interest, reduces interference of image noises, greatly reduces an image processing time, improves a target recognition accuracy, is beneficial to next target positioning, and has a significant improvement on a network recognition speed integrally.

Abstract: Disclosed are method and apparatus for SAR image recognition based on multi-scale features and broad learning. A region of interest of an original SAR image is extracted by centroid localization, the image is rotated and added with noise for enhancing the data volume, the image is downsampled, LBP features and PPQ features are extracted, an LBP feature vector XLBP and an LPQ feature vector XLPQ are cascaded to achieve dimension reduction by principal component analysis to obtain a fusion feature data Xm, the fusion feature data Xm is input to a broad learning network for image recognition and a recognition result is output. By fusing the LBP features and the LPQ features, complementary information is fully utilized and redundant information is reduced. The broad learning network is used to improve the training speed and reduce the time cost. As a result, the recognition effect is more stable, robust and reliable.

Abstract: Disclosed is a combustion mechanism including a combustion chamber, an inner container arranged in the combustion chamber, the inner container is internally provided with a first igniter, a fire outlet pipe extending from an inner cavity of the inner container to outside of the combustion chamber, an ash discharge pipe above the inner container and extending to outside of the combustion chamber. The combustion mechanism further includes a feeding pipe extending into the inner container for feeding materials into the inner container; a nozzle in the inner container for blowing air to cause accumulated ash into the ash discharge pipe, and a first suction fan being arranged in the ash discharge pipe; a gas driving mechanism connected with the nozzle for outputting jet gas to the nozzle; and an air supply mechanism outside the combustion chamber for supplying air to the inner container and the gas driving mechanism.

Abstract: The present disclosure relates to a vehicle refrigerator, which comprises a body, a refrigerating system and a driving system; the refrigerating system and the driving system are both arranged in the body; the body is removable in a trunk of a vehicle; the driving system is used for driving the refrigerating system to operate normally and comprises an igniter, an air course and an air source, and the igniter is connected with the air source through the air course; and the refrigerating system is used for cooling an inner cavity of the body and is provided with a working medium capable of changing gas and liquid.

Abstract: The present disclosure relates to a refrigerating device, which comprises a condenser, an evaporator, a generator, a recovery tank, a return pipeline and an air pipe. A working medium capable of changing in gas and liquid circulates in the condenser, the evaporator and the generator to cool air in the air pipe. The two ends of the air pipe are extended into a storage area to provide sufficient cold air for the air pipe and ensure an indoor temperature of the storage area.