30results about How to "Reduce structural redundancy" patented technology

The invention discloses a laser radar receiving system, which is characterized in that a cassegrain telescope, a subsequent receiving optical unit and a visual field angle adaptive adjusting program are arranged, wherein the focal plane of the cassegrain telescope is positioned between a primary mirror and a secondary mirror; the laser radar subsequent receiving optical unit is arranged in the cassegrain telescope; the aperture of a small-hole diaphragm can be controlled by the visual field angle adaptive adjusting program, so that adaptive adjustment of a visual field angle of the telescope is realized; an output lens seat with a diameter of 52 mm is designed on a supporting cross arm of the telescope; the central line of the lens seat is coaxial with the central axis of the telescope; and the included angle of the normal line of the lens seat and the central axis of the telescope is 45 degrees. The echo signal lights with different detection wavelengths are focused at the center of the small-hole diaphragm through the parabolic primary mirror and the double-curve secondary mirror, and the shaped quasi-parallel signal lights enter the subsequent detection system.

The invention discloses a speed closed-loop control system and method and a vehicle. The system comprises a first control assembly for identifying the current working condition of the vehicle and generating the target speed and target acceleration of the vehicle, and a second control assembly for acquiring the current speed and current acceleration of the electric vehicle, obtaining the target torque according to the current working condition, the target speed, the target acceleration, the current speed and the current acceleration and transmitting the target torque to a motor controller to make a motor of the electric vehicle conduct outputting according to the target torque. The speed closed-loop control system can integrate multiple speed closed-loop systems to achieve hierarchical control of the vehicle, reduce the structural redundancy, reduce the maintenance cost and improve the practicability of the vehicle, and is simple and easy to implement.

The invention discloses a video action detection method based on a scale attention hole convolutional network. The method comprises the following steps: firstly, sampling a video to obtain a frame image sequence, and marking according to fragment positions to obtain video fragments; and then respectively constructing a layer-scale attention action fragment model and a frame position attention action recognition model, and according to the models and in combination with a watershed algorithm, sequentially obtaining weighted feature representation of a frame image and an action category to whicha video fragment belongs, thereby finishing a video action detection task. According to the method, the space-time motion information capable of better reflecting the intrinsic structures of the timedimension and the space dimension of the video data is extracted by utilizing the hole convolution network; the intrinsic relation of the time sequence context relation of the video frames along withthe change of the size of the scale is more properly described through the layer scale attention, the designed frame position attention mechanism gives the video frames of the action clips a weight more accurately representing the key content of the action clips, the accuracy of video action detection is improved, and the efficiency of action detection is improved.

The invention discloses a concentration gradient generating device and a method for generating a concentration gradient in one step. The concentration gradient generating device comprises first and second micro-channel networks which are arranged along a vertical direction, wherein the first and second micro-channel networks respectively comprise a plurality of first and second concentration generating channels; one end of each first concentration generating channel is communicated with a first sample inlet of the first micro-channel network; one end of each second concentration generating channel is communicated with a second sample inlet of the second micro-channel network; first and second fluids are respectively injected into the first sample inlet and the second sample inlet; the other end of each first concentration generating channel is communicated with the other end of the corresponding second concentration generating channel and also is connected with a connecting channel, so that the first and second fluids can be converged in the connecting channel; and each connecting channel is also connected with a mixing channel. The concentration gradient generating device disclosed by the invention has the advantages of simple structure, high stability, easiness in manufacturing, and the like. The samples in various target concentrations can be formed in one step.

The invention belongs to the field of loop heat pipes, and particularly discloses a double-evaporator loop heat pipe. The double-evaporator loop heat pipe comprises a first evaporator, a second evaporator, a first steam transmission pipeline, a second steam transmission pipeline, a condenser, a mixer and a liquid transmission pipeline, wherein the first evaporator and the second evaporator are connected with an inlet of the condenser through the first steam transmission pipeline and the second steam transmission pipeline respectively; and a condensed liquid generated in the condenser is firstly mixed in the mixer and then is respectively fed into the first evaporator and the second evaporator through the liquid transmission pipeline, so that the double-evaporator loop heat pipe is formed.According to the invention, the requirement of large-area heat dissipation or heat dissipation of multiple heat sources can be met, and the heat dissipation efficiency of the loop heat pipe is effectively improved. Meanwhile, the independent steam transmission pipelines are adopted, the steam in the first evaporator and the second evaporator enters the condenser through the respective steam transmission pipelines, the interference between the evaporators is avoided, and the stability and operation controllability of the loop heat pipe are enhanced.

The invention discloses a side-cloud collaborative electric power Internet of Things intelligent inspection method and system. The method comprises the following steps: collecting information collected by an unmanned aerial vehicle; convolution operation being carried out on the collected information to extract feature information, and a 5G core network being utilized to transmit the feature information and the total number of the serial numbers; performing full-connection operation by utilizing the feature extraction information and the serial number, and judging abnormal features; performingcategory identification on the information of the abnormal features; and outputting the abnormal information and the information category to complete inspection. According to the invention, the hardware resource difference of each level is fully utilized, a task allocation scheme with unified efficiency and capability is realized, the computing capability of the whole system is accelerated, the hardware resource utilization rate and the inspection work efficiency of all equipment are ensured, the problem of large calculation amount of a unilateral server is solved, and thus better economic benefits are brought.

The invention relates to an integrated abrasive belt tool for grinding, blasting and measuring, and belongs to the field of precision free-form surface grinding and polishing. A connecting rod liftingunit is fixed to the upper part of a shell, a revolution support unit is fixed under the connecting rod lifting unit, and a rotation driving unit is fixed to the upper part of the revolution supportunit. A revolution driving unit is fixed to the lower part of the revolution support unit, and an abrasive belt guide wheel unit is fixed onto the revolution support unit. A contact wheel unit and a laser distance measuring instrument are fixed to the lower part of the revolution support unit. The integrated abrasive belt tool for grinding, blasting and measuring has the advantage of having the ability to measure, grind and polish; the processing mode of the tool is changed by driving a revolution support through a telescopic cylinder, and the process is fast and simple; and the tool has a fast grinding mode, a precision polishing mode and a finishing polishing mode, can complete the machining process from blank to finished product in single clamping, and is suitable for free-form surfaceintegration machining which requires both efficiency and quality.

The invention discloses a feeding and discharging integration type film adhesion device which comprises a circulation type transferring mechanism, a feeding and discharging mechanism, a film adhesion mechanism and a carrying and transferring mechanism, wherein the feeding and discharging mechanism, the film adhesion mechanism and the carrying and transferring mechanism are arranged on the side of the circulation type transferring mechanism. The circulation type transferring mechanism comprises a rotating disc base, a rotating disc and a rotating driver, wherein the rotating disc base is fixedly arranged, the center of the rotating disc is rotationally connected to the top of the rotating disc base, the rotating driver is installed on the rotating disc base, and the power output end of the rotating driver is connected with the rotating disc in a transmission mode. A feeding station, a film adhesion station, a temporary storage station and a transferring station are sequentially arranged on the periphery of the rotating disc base at equal intervals in the rotating direction of the rotating disc. The feeding and discharging mechanism, the film adhesion mechanism and the carrying and transferring mechanism align to the feeding station, the film adhesion station and the transferring station correspondingly. According to the feeding and discharging integration type film adhesion device, the product pollution problem caused by the excessive manual participation is avoided, and the film adhesion efficiency is improved.

An electrically powered tool includes a cage assembly that has a cage, driving component, executing component, and cylindrical housing. The cage includes a base, a rear cage extending rearwards from the base, and a front cage extending forwards from the base. The driving component is positioned on the rear cage. The executing component is positioned on the front cage, and includes an output shaft extending forwards. The driving and executing components are positioned on the cage so as to form the cage assembly. The cage assembly is received in the cylindrical housing, and is configured to be mounted in the cylindrical housing in a modular fashion. Prior to insertion in the housing, the driving and executing components are jointly mounted into the cage to form the cage assembly so as to reduce structural redundancy via fixing and fitting, such that an overall body of the assembly smaller and more compact.

The invention discloses a dual-purpose feeding and discharging device for feeding and tray recovery. The dual-purpose feeding and discharging device comprises a material preparation assembly, two tray supporting plates, two groups of jacking assemblies and a carrying assembly; the material preparation assembly is sequentially provided with a material feeding station and a tray recovery station in a linear direction; the two tray supporting plates are arranged on the material feeding station and the tray recycling station respectively; the two groups of jacking assemblies are arranged in parallel, and each group of jacking assembly abuts against the bottom face of the corresponding tray supporting plate; and the carrying assembly comprises a carrying cross beam stretching across the upper portion of the material preparation assembly, a suction module in sliding connection with the carrying cross beam and a transverse movement driver in transmission connection with the suction module. Under the condition that the structural complexity is not increased as much as possible, the two suction modules are integrated into a whole, so that the suction modules can adapt to materials and trays, two carrying requirements can be met only by using one carrying assembly, the structural complexity is reduced, the carrying path is shortened, and the feeding efficiency and the tray recovery efficiency are improved.

The invention discloses a netlist-level circuit area optimization method based on an AND gate inverter diagram and a storage medium. The optimization method comprises the following steps: step 1, acquiring a first netlist-level circuit file; step 2, according to the first netlist-level circuit file, obtaining a plurality of first nodes and connection relationships among the first nodes according to a preset sequence; step 3, correspondingly creating the first node as a second node of the AND gate/inverter graph based on a preset sequence, and when the second node has a local substructure, searching an isomorphic structure of the local substructure in the hash table by utilizing a hash search method to obtain a creation result of the second node; and step 4, based on a preset sequence, processing the next first node according to the method in the step 3 until all the first nodes are processed to obtain a final AND gate/inverter graph. According to the optimization method, the redundant circuit structure can be removed, so that the redundancy of the circuit structure is reduced, the purpose of reducing the area of the circuit structure is achieved, and finally the memory is reduced.

The invention discloses a filling and rotating all-in-one machine, and belongs to the field of automatic packaging. Comprising a frame, a conveying mechanism, a filling mechanism and a cap screwing mechanism, the conveying mechanism is used for conveying bottle bodies; the filling mechanism is arranged on one side of the conveying mechanism, and the filling mechanism is suitable for filling materials into bottle bodies; and the cap screwing mechanism is arranged on one side of the conveying mechanism, is located on the downstream of the filling mechanism and is a multi-head tracking type cap screwing assembly used for grabbing the cap body to the position over the bottle body and completing the cap screwing action. The filling mechanism and the cap screwing mechanism in the filling and screwing all-in-one machine are arranged along the conveying mechanism, the overall structure is in a linear layout, the internal structure design is reasonable, the occupied area of the whole machine is small, and the whole machine is simple in mechanical and electrical debugging and convenient to overhaul.

The invention provides an aero-engine central transmission structure adopting a face gear for power division. The aero-engine central transmission structure comprises a central transmission assembly, a first accessory gearbox assembly and a second accessory gearbox assembly, the central transmission assembly comprises a high-pressure compressor rotor, a face gear shaft mounted on the high-pressure compressor rotor through a locking structure, and a face gear shaft supporting bearing for supporting the face gear shaft. The face gear shaft supporting bearing is mounted on a central transmission shell. The first accessory gearbox assembly and the second accessory gearbox assembly each comprise an accessory gearbox, a central transmission rod connected with the accessory gearbox, a driven straight spur gear shaft connected with the central transmission rod through a locking structure, a first gear shaft supporting bearing and a second gear shaft supporting bearing, wherein the first gear shaft supporting bearing and the second gear shaft supporting bearing are used for supporting the driven straight spur gear shaft. The face gear shaft is separately meshed with the first driven straight spur gear shaft and the second driven straight spur gear shaft.

The invention provides an image semantic segmentation method and device. The method comprises the steps of inputting a to-be-processed image into an image recognition model, wherein the image recognition model comprises a short-time dense connection network layer and a decoding network layer, the short-time dense connection network layer comprises a convolution module, a plurality of short-time dense connection layers and an output module, and each short-time dense connection layer comprises a plurality of short-time dense connection modules; calling a convolution module to process the to-be-processed image to obtain a first feature map corresponding to the to-be-processed image; calling a short-time dense connection layer to process the first feature map to obtain a second feature map; calling an output module to process the second feature map to obtain a third feature map; calling a decoding network layer to perform up-sampling on the third feature map and mapping the third feature map to the segmentation category to obtain a fourth feature map of which the channel number is the segmentation category number; and determining a semantic segmentation result corresponding to the to-be-processed image according to the fourth feature map. According to the invention, the network structure redundancy can be reduced, and the image semantic segmentation performance and efficiency are improved.

The invention relates to a multipurpose net cage protection body, a combined structure and an assembling method. The multipurpose net cage protection body comprises a cage wall and partition plates connected with the cage wall, and the partition plates are used for dividing the inner space of a net cage combination body into a plurality of sub-filling spaces used for containing fillers correspondingly; and the cage walls and the partition plates are made of meshes, geotechnical cloth is attached to the inner sides of the meshes of the cage walls, filler is limited in a space defined by the geotechnical cloth, and the adjacent sub-filling spaces are communicated through meshes of the meshes of the partition plates, so that the filler can circulate between the adjacent sub-filling spaces. According to the scheme, filler is easy to install, construction of the net cage protection body is facilitated, and the manufacturing cost of the net cage protection body can be reduced.