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407results about How to "Avoid constraints" patented technology

Image classification method based on characteristic weight learning and nuclear sparse representation

The invention discloses an image classification method based on characteristic weight learning and nuclear sparse representation and mainly solves the problem in the prior art that a characteristic layer judging capability is lacked. The image classification method comprises the realization steps of: mapping a training sample and a testing sample into a nuclear space; configuring a structuralized dictionary in the nuclear space; carrying out sparse representation on the training sample and the testing sample by utilizing the dictionary; solving a weight of each type of a sub-dictionary and a weight corresponding to a reconstructed error by utilizing a sparse coefficient of a training set through a Fisher judging principle; calculating the reconstructed error of the testing sample according to the dictionary weight and the weight of the reconstructed error; and selecting the minimum value from the reconstructed error of each type of the sub-dictionary to the testing sample, and taking the type of the corresponding sub-dictionary as a classifying result of the testing sample. According to the image classification method disclosed by the invention, the type judging capability of the dictionary and the reconstructed error on a characteristic layer can be enhanced; the performance of a classifier based on image reconstruction is improved; and the image classification method can be used for human face identification, image classification, image marking, image indexing and image division.
Owner:XIDIAN UNIV

Rubber forest soil respiration measuring method

The invention discloses a rubber forest soil respiration measuring method, comprising the following steps: selecting sample plots with different ages in a rubber forest; arranging a repeat sample plot on each sample plot; arranging four treatment regions on each repeat sample plot, wherein the four treatment regions comprise a treatment region for removing non-root system soil rings and reserving a litter layer, a treatment region for removing root system soil rings and reserving a litter layer, a treatment region for removing non-root system soil rings and removing a litter layer and a treatment region for removing non-system soil rings and removing a litter layer; and measuring each parameter of the soil respiration of the treatment regions in real time by utilizing a soil respiratory chamber measuring system equipped for a soil respiration measuring instrument, and simultaneously measuring environmental factors. By treating the measured sample plots region by region, the method of the invention measures the fixed point in situ at the condition of not damaging the original soil and biology, effectively separates each component value of the components of the soil respiration, is beneficial for improving the measuring accuracy, and breaks away from the restriction caused by scientific research conditions; and the obtained measuring value can satisfy the requirements of the scientific research.
Owner:RUBBER RES INST CHINESE ACADEMY OF TROPICAL AGRI SCI

Ground to wall transition wall gecko-intimating robot

The invention relates to a ground wall transition robot imitating a wall lizard, which adopts a manner of crawling on all fours and consists of a mechanical part and a circuit part. The mechanical part comprises a body and four legs, is divided into two parts in a completely symmetric manner with interchangeability; the two parts are connected by sliding part; each joint is driven by steering engine; the position of paw is designed into a damping joint, which provides a fixed position for the paw joint when suspending, and angles can be adjusted according to the condition of the wall surface when adsorbing, so as to adapt to varied conditions of the wall surface; the robot realizes the ground wall transition in a transitional walking manner, and the ground wall transition can be realized by the combined of the pitching action of the body and the change of the foothold position of a single foot; the motion control of the robot adopts a master-slave control structure, wherein, a host computer takes charge of the algorithm operation relevant to the gait planning of the robot, and meanwhile sends out orders to a slave computer at certain frequency, then the slave computer receives the orders of the host computer and makes corresponding responses, thus completing the output of the control information of the driver and sending relevant operation state information of the robot back to the host computer; the host computer and the slave computer are communicated by a 232 serial port.
Owner:BEIHANG UNIV

Upper limb hemiplegia rehabilitation robot device with adjustable training plan

The invention relates to a robot device provided with an adjustable training plane for hemiplegic rehabilitation of an upper limb, and belongs to the technical field of medical rehabilitation appliance. In order to meet space training requirements provided by a medical robot in the hemiplegic rehabilitation training, the invention provides the rehabilitation robot device provided with the training plane, which comprises a seat, the training plane, an adjusting device for the training plane, a mechanical arm arranged on the training plane, a wrist fixing bracket and an elbow bracket. The adjusting device for the training plane can adjust the height of the training plane relative to the ground and the included angle between the training plane and the horizontal plane, so as to adapt to the requirements of different patients to finish a plurality of rehabilitation training actions in a plurality of planes. The robot device has the advantages that the robot device has a simple structure, can meet the requirements of the patient on large active and passive training on various inclined planes through adjusting the pose of a working face, and can do special training for an affected joint and a corresponding muscle group through target-oriented adjustment of the inclined planes, so as to achieve better rehabilitation effect.
Owner:TSINGHUA UNIV

Search and rescue robot used in pit

ActiveCN101746423AEasy to moveTo achieve the purpose of static positive pressureMining devicesEndless track vehiclesElectricityTerrain
The invention relates to a search and rescue robot used in pit, belonging to the robot technology field. The search and rescue robot comprises an explosion-resistant enclosure, two sets of symmetrical running system, independent swinging arm systems and a controlling system; transmission mechanisms of the controlling system, the running systems and the swinging arm systems are arranged in the explosion-resistant enclosure, the controlling system is connected with a driving mechanism, a mechanical cradle head and an optical fiber laying device are arranged above the explosion-resistant enclosure, the optical fiber of the optical fiber laying device is electrically connected with the controlling system, a sensor group is internally arranged in the mechanical cradle head, and the sensor group and a cradle head drive plate are electrically connected with the controlling system. A static positive pressure explosion-resistant enclosure is adopted in the invention, when the static positive pressure is reached, the moving ability of the robot is improved. A four-swinging-arm independent driving mechanism is adopted, the posture of the robot is accurately controlled, and the adaptbility and the barrier jumping ability of the robot to a complex terrain are increased. The method of vehicle-mounted optical fiber is adopted, the optical fiber is laid freely during movement, and the effect to the moving ability of the robot, which is caused by the friction of the optical fiber and the clamping of the optical fiber, is reduced.
Owner:SHENYANG SIASUN ROBOT & AUTOMATION
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