Abstract: A PDC drill bit has a drill bit body and a blade. The blade is provided with cutting teeth. At least one cushion structure is rotatably connected to the drill bit body. The cushion structure makes contact with bottom hole rock, and the cushion structure swings in a direction opposite to the cutting of the drill bit. Alternatively, a cushioning portion on the cushion structure is eccentrically arranged. Under the action of the normal force of the bottom hole rock, the cushioning portion swings to an offset side. The cushion structure is detached from the bottom hole rock and is reset towards a free state under the action of a reset mechanism. Under complex motion conditions such as compound drilling and drilling into hard or non-uniform stratum conditions, the swing of the cushion structure absorbs an impact load and avoids impact damage to the cutting teeth.

Abstract: A socket detection apparatus for supporting anomaly detection of an earth wire and a neutral wire includes: a micro-control unit, provided with a test plug of a fire wire connection end, a neutral wire connection end and an earth wire connection end, and a detection circuit connected with the test plug; and an induction antenna arranged corresponding to a fire wire end of a detected power socket, the induction antenna being connected with a first signal input end of the micro-control unit.

Abstract: A socket detection apparatus for supporting anomaly detection of an earth wire and a neutral wire includes: a micro-control unit, provided with a test plug of a fire wire connection end, a neutral wire connection end and an earth wire connection end, and a detection circuit connected with the test plug; and an induction antenna arranged corresponding to a fire wire end of a detected power socket, the induction antenna being connected with a first signal input end of the micro-control unit.

Abstract: The disclosure relates to a monitoring system and a control method for a monitoring system. The monitoring system includes a camera device, an object recognizing device and an arrangement control device. The camera device includes at least one movable camera device. The object recognizing device is configured to recognize a target object based on a primary image captured by the camera device. The arrangement control device is configured to control the spatial arrangement of the movable camera device so that the movable camera device is located at a predetermined position relative to the target object.

Abstract: The disclosure relates to an image processing method and image processing device for a monitoring system including multiple camera devices, and a monitoring system. The image processing method includes: extracting a key frame from a video acquired by each of the plurality of camera devices; for each of the extracted key frames, determining a neighbor camera device having monitor area adjacent to the monitor area of the key frame, and acquiring from the neighbor camera device a corresponding video frame which is simultaneous to the key frame; blending the key frame extracted from each of the camera devices and the corresponding video frame to generate a panorama key frame; and generating a sequence formed by panorama key frames for the key frames as a video abstract of the monitoring system.

Abstract: The disclosure relates to a monitoring system and a control method for a monitoring system. The monitoring system includes a camera device, an object recognizing device and an arrangement control device. The camera device includes at least one movable camera device. The object recognizing device is configured to recognize a target object based on a primary image captured by the camera device. The arrangement control device is configured to control the spatial arrangement of the movable camera device so that the movable camera device is located at a predetermined position relative to the target object.

Abstract: The disclosure relates to an image processing method and image processing device for a monitoring system including multiple camera devices, and a monitoring system. The image processing method includes: extracting a key frame from a video acquired by each of the plurality of camera devices; for each of the extracted key frames, determining a neighbor camera device having monitor area adjacent to the monitor area of the key frame, and acquiring from the neighbor camera device a corresponding video frame which is simultaneous to the key frame; blending the key frame extracted from each of the camera devices and the corresponding video frame to generate a panorama key frame; and generating a sequence formed by panorama key frames for the key frames as a video abstract of the monitoring system.

Abstract: The present invention relates to methods and compositions for identifying a pathogen. The inventions provide an antibody-based biosensor probe comprising (AUNT) in combination with a polymer-coated magnetic nanoparticle. In particular, a nanoparticle-based biosensor was developed for detection of Escherichia coli O157:H7 bacterium in food products. Further described are biosensors for detecting pathogens at low concentrations in samples. Even further, a gold nanoparticle-based electrochemical biosensor detection and amplification method for identifying the insertion element gene of Salmonella enterica Serovar Enteritidis is described. The present invention provides compositions and methods for providing a handheld potentiostat system for detecting pathogens outside of the laboratory. The AUNT biosensor system has applications detecting pathogens in food, water, beverages, clinical samples, and environmental samples.