5results about How to "Improve the mismatch" patented technology

The utility model belongs to the technical field of thermal power equipment, and relates to a high-efficiency combined preheater system of a thermal power plant boiler, which comprises a tubular air preheater arranged at the tail part of the boiler and used for heating primary air and a rotary air preheater used for heating secondary air, flue gas inlets of the tubular air preheater and the rotary air preheater are connected with a flue outlet of the denitration system, flue gas outlets of the tubular air preheater and the rotary air preheater are connected with the dust remover, and a water supply heat exchanger is further arranged between the flue gas inlet of the tubular air preheater and the flue outlet of the denitration system. The rotary preheater can further improve the operation efficiency of a coal power plant, solves the problems of high air leakage, loss and catalyst blockage of a traditional rotary preheater, has the advantages of energy conservation, economy and reliability, and meets the technical requirements of efficient and clean operation of a thermal power plant.

The invention discloses an intelligent wheelchair multi-mode control method and system, and particularly relates to the technical field of wheelchair control. The method comprises the following steps: acquiring voice data, head posture data and residual limb movement data of a user in real time, and establishing an initial association relationship between a user control intention and each modal feature; continuously tracking a sound production mode, head posture control stability and time evolution characteristics of residual limb actions, generating functional state evolution trend data and posture control drift characteristic data, and executing dynamic weighting compensation on multi-modal fusion parameters to obtain a self-adaptively updated multi-modal fusion model; according to the method, intention recognition and wheelchair motion control are carried out on the current real-time multi-modal features by using the self-adaptively updated multi-modal fusion model, so that the consistency and reliability of control intention recognition results are kept under the condition that the function state of a user is slowly changed, and the risk that the same motion intention is misjudged as different control instructions in different periods is reduced.

The invention provides a preparation and separation method of an LED epitaxial wafer and an LED chip. According to the LED epitaxial wafer, a first sacrificial layer and a buffer layer structure are arranged between a sapphire substrate and an epitaxial laminated layer; according to the preparation and separation method of the LED chip, an LED epitaxial wafer is etched through a chip technology to form a plurality of LED chips which are arranged at intervals through cutting channels, a part of a first sacrificial layer is exposed out of the cutting channels, then an etchant solution is adopted to dissolve the first sacrificial layer through the exposed cutting channels, lossless stripping of a sapphire substrate can be achieved efficiently at low cost, and the service life of the LED chip is prolonged. The sapphire substrate can be recycled repeatedly, the step of grinding and thinning can be omitted, the problems that the electric leakage rate is increased and the yield is low due to the fact that an epitaxial lamination layer is damaged by an existing grinding process, physical damage is generated on the side wall when LED core particles are cut through laser, and the output efficiency of light is affected are solved, and then the reliability and the yield of LED chips are improved.

The invention discloses a preparation method of a composite polyurea coating with a metal concentration gradient. The preparation method comprises the following steps: firstly, screening a positive electrode material until particles are uniform; then putting the screened positive electrode material into a molecular layer deposition cavity for preheating, so that the positive electrode material is preheated to the temperature the same as that of the cavity; adding a required precursor; preheating until all the precursors reach a target temperature; and finally, performing molecular layer deposition on the positive electrode particles on the positive electrode material according to the sequence of a high metal concentration layer, a middle metal concentration layer and a low metal concentration layer, or in the opposite sequence, namely the sequence of the low metal concentration layer, the middle metal concentration layer and the high metal concentration layer, so as to obtain the composite polyurea coating with the metal concentration gradient. The invention further discloses application of the composite polyurea coating with the metal concentration gradient. According to the invention, the problem that continuous change of concentrations of different components in the coating of the positive electrode material in the prior art is difficult to realize is solved.

The invention belongs to the field of 3D human body posture estimation, and particularly relates to a multi-person 3D posture estimation method and system based on explicit limb representation, and the method comprises the steps: obtaining a multi-person scene image, inputting the multi-person scene image into a trained multi-person 3D posture estimation model, a key point heat map, a limb orientation vector field, a limb relative depth map and a root key point absolute depth map are obtained, post-processing is carried out on the key point heat map, the limb orientation vector field, the limb relative depth map and the root key point absolute depth map, and an estimated multi-person 3D posture is obtained; according to the method, the most intuitive limb information can be directly utilized for matching of the candidate key points by displaying and coding the limb information of the human body into the two-dimensional limb azimuth vector field and the limb relative depth map, so that the phenomenon that the candidate key points of different human bodies are wrongly matched is improved, and the quality of matched postures is improved.