6 results about "Entire hand" patented technology

The invention provides a finger of a dexterous hand, and relates to the technical field of artificial intelligence, the finger of the dexterous hand comprises at least two knuckles, and the at least two knuckles comprise a first knuckle and a second knuckle which are sequentially arranged in the direction from the finger root to the fingertip in the axial direction of the finger; the first knuckles are provided with first driving modules used for driving the first knuckles, and the second knuckles are provided with second driving modules used for driving the second knuckles. Wherein the second knuckle comprises a fingertip and a connecting part, the fingertip is installed on the connecting part through a detachable component, and the connecting part is connected with the first knuckle. In the embodiment of the invention, each knuckle is directly driven, the transmission path is short, and the control precision can be improved. And through the detachable fingertips, the fingertips can be quickly replaced according to actual scene requirements, the whole hand does not need to be replaced, and the cost is reduced.

This invention discloses a humanoid dexterous hand and robot, specifically relating to the field of humanoid robot technology. It includes a hand support, finger modules mounted on the hand support, and a control module signal-connected to the finger modules. The finger modules include a thumb assembly, an index finger assembly, a middle finger assembly, a ring finger assembly, and a little finger assembly. The thumb assembly includes a flexible thumb and a thumb drive device for bending and retracting the thumb. The index finger assembly includes a flexible index finger and an index finger drive device for bending and retracting the index finger. The middle finger assembly includes a flexible middle finger and a middle finger drive device for bending and retracting the middle finger. The ring finger assembly includes a flexible ring finger and a ring finger drive device for bending the ring finger. The little finger assembly includes an octopus-tentacle-like appendage and an octopus-tentacle drive device for bending the appendage. This invention improves the dexterity of the little finger, enhances the grasping ability and operational versatility of the entire hand, and features low manufacturing cost and high maintenance convenience.

This invention discloses a method and device for full hand vein biometric recognition to prevent spoofing attacks, relating to the fields of full hand vein recognition, biometric information recognition, and identity authentication. The method includes: Step 1, image acquisition and detection: acquiring a frontal hand image covering the palm and finger areas, ensuring the presence of a palm and a real living person in the frontal hand image; Step 2, ROI extraction: extracting the palm vein ROI and the multi-finger ROI; Step 3, feature extraction: extracting palm vein features and features of the four fingers, and generating corresponding feature hash codes; Step 4, feature matching: first matching the palm vein features, then matching the four finger features; similarity comparison is achieved by calculating the Hamming distance between the feature hash codes; Step 5, score fusion: calculating the matching scores for the palm vein features and the four finger features respectively, then performing Tanh normalization on the matching scores, and finally fusing the normalized matching scores to obtain the final recognition result.

The application provides a dexterous hand grasping action control method, electronic equipment and storage medium, and belongs to the technical field of robot dexterous hands. The method comprises the following steps: receiving a grasping task, and acquiring image information of a target object in the grasping task; determining a target diameter corresponding to the target object by analyzing the image information; comparing the target diameter with a plurality of preset grasping diameters of the dexterous hand, and determining a target grasping mode according to a comparison result, wherein the target grasping mode comprises a fingertip grasping mode, a fingertip and second joint cooperative grasping mode and a full hand grasping mode; and controlling the dexterous hand to execute the grasping task in the target grasping mode, wherein in the grasping process, three-dimensional force data collected by three-dimensional force sensors arranged at different positions of the dexterous hand is monitored to determine a real-time grasping state, and a corresponding grasping adjustment strategy is executed according to the real-time grasping state. The application can improve the grasping success rate and operation adaptability of the dexterous hand when facing objects of different sizes.

This application introduces a new type of full-hand held table tennis racket to improve the inherent comfort issues in traditional racket design. The table tennis racket adopts a unique holding structure, aiming to improve the comfort of players and improve the table tennis technical level. Through the redesign of the racket handle, it encourages a more natural and intuitive holding method, making the swing trajectory more consistent with the movement direction of the racket, reducing wrist pressure, thereby reducing fatigue, and making it easier for players to learn. The racket is mainly composed of three core components: the racket face, the handle and the connecting bridge, and is equipped with a carefully designed anti-displacement structure to enhance the stability of the connection. The full-hand holding method uses the entire palm to grip the handle, without the need for finger twisting, thereby reducing the need for professional training, especially suitable for beginners.

A shoulder stock for pistols, consisting of an elongated body, having a rear end that forms a first support surface for contact against a shoulder region of a shooter and having a front end that forms a hand grip for the hand of the shooter as well as a second support surface for receiving an entire reaction force of the pistol, is intended to enable the use of various handguns with differently shaped grip pieces with only one shoulder stock, with minimal effort. For this purpose, the entire hand grip is replaceable and makes it possible to use different pistols with only one elongated body.