37results about How to "Not many" patented technology

The invention relates to an LSTM circulating neural network model and a network attack identification method based on the model, The LSTM loop neural network model building process comprises the following steps: S100, collecting network request data of a plurality of text formats as a training data set, and setting label categories for each network request data according to the content of the network request data; S200: preprocessing the network request data in the training data set, and converting the network request data into digital serial data with preset length; S300: According to the digital serial data in the training data set, the LSTM loop neural network model is constructed by training. The invention converts the network request data into digital serial data, and then uses the training data set composed of the data for training to construct the LSTM circulating neural network model, thereby realizing the prediction of the network request data category.

The invention discloses an electromagnet-permanent magnet mixed type online active balance head structure for a rotary machine and a control method thereof. The balance head structure consists of two parts, namely drivers and actuators, wherein the drivers comprise coils, iron cores, magnetoresistive adjusting rings and the like; and the actuators comprise weight discs, magnetic discs, permanent magnets, bearings, magnetism isolating rings, base bodies, end covers and the like. When the machine needs dynamic balance, positive and negative pulse voltages are applied to the two ends of the coils in turn, the weight discs are driven to rotate at a certain angle to form unbalance vectors; the unbalance vectors of the two weight discs in the drivers are synthesized into an effective correction vector, so as to offset the unbalance of the rotary machine; when the dynamic balance is not needed, the weight discs and the magnetic discs at the two sides are at the positions with lowest magnetic resistance to realize self locking of the weight discs; and at the moment, the weight discs rotate together with a shaft of the rotary machine. The balance head disclosed by the invention has the characteristics of simple structure, easy assembly, no contact, no friction, fast response, low cost, diversified weight forms, wider balanced capacity range and application in emergent speed-change working conditions. By adoption of the balance head designed by the invention, unbalance of the rotary machine with high-speed rotation can be corrected online in real time, so that the vibration level of the machine is reduced, the operating quality and the operating efficiency of the machine are improved, and the service life of the machine is prolonged.

The embodiment of the invention relates to a method for interacting with equipment by utilizing an optical indicator, the optical indicator as well as a presentation method and system adopting the optical indicator. The method for interacting comprises the following steps of: detecting a light spot generated by the optical indicator; determining a sequence of the state of the light spot in a preset time interval according to the detection result; and determining an interaction event according to the sequence of the light spot so as to interact with the equipment. According to the embodiment of the invention, more than one light spot is utilized, and the light spot is mapped to different interaction events according to the sequence of the state of the light spot in the preset time interval, thus more interaction events can be presented. The light spot is easier and simpler to detect, and a detection method can be used for improving the accuracy and the reliability of detection, thus the sequence of the state of the light spot can be mapped into a mouse event and a corresponding mouse signal is generated, so that interaction with a computer is realized.

The invention discloses a dynamically reconfigurable battery pack semi-matrix type topological structure. An m number of battery monomers or battery modules are connected in series to form a seriallyconnected battery pack or battery cluster; an n number of serially connected battery packs or battery clusters are connected in parallel to form a battery module or battery pile; anodes and cathodes of the battery monomers or battery modules are respectively connected with anode and cathode busbars; the anode and cathode busbars of the battery monomers and main anode and cathode busbars of the battery modules form a semi-matrix type electrical structural topology, or the anode and cathode busbars of the battery modules and the main anode and cathode busbars of the battery piles form a semi-matrix type electrical structural topology; corresponding crossed positions between the various busbars are connected through switch devices; and the total number of the switch devices is 0.5m<2>n<2>+mn<2>+0.5mn-n-1. The invention also discloses a dynamically reconfigurable battery energy storage system with the semi-matrix type electrical structural topology and a dynamic reconfiguration control method. Dynamic reconfiguration of the battery monomers or battery modules is quickly realized without changing physical positions of the battery monomers or battery modules.

The invention relates to a waterproof sealing device for an underwater electrical equipment wire via hole. An integrated round sleeve is arranged on the wall of a shell of electrical equipment, and the upper end and the lower end of the round sleeve are respectively connected with a compression nut through threads. An elastic sealing ring sleeve is arranged in the round sleeve. The upper end face and the lower end face of the elastic sealing ring sleeve are respectively provided with a conical ring groove. Insertion type compression rings are arranged between the elastic sealing ring sleeve and the compression nuts respectively. The insertion type compression rings are respectively provided with an annular insertion body corresponding to the conical ring groove. The compression nuts are screwed tightly to compress the insertion type compression rings to move toward the corresponding conical ring grooves in the elastic sealing ring sleeve, the elastic sealing ring sleeve is extruded, expands and deforms, the outer wall of the elastic sealing ring sleeve is tightly attached to the inner wall of the round sleeve, the internal wire via hole is shrunk to embrace a wire tightly, and therefore waterproof sealing of the wire via hole is achieved. The waterproof sealing device is compact in structure, good in sealing performance and capable of being suitable for wires different in outer diameter within a certain range, stress of all the components is even, and wire penetrating and fixing on site can be achieved.

The invention discloses an outside diameter sizing sleeve for a steel wire mesh skeleton plastic composite pipe. The sizing sleeve is provided with a sizing sleeve shell, a sizing sleeve core and a connecting flange, wherein the sizing sleeve core is arranged in the sizing sleeve shell; and the connecting flange is arranged at one end of the sizing sleeve shell. The sizing sleeve core is provided with a water inlet groove, a sealing groove, a vacuumizing hole and a cooling runner, wherein the water inlet groove is communicated with the cooling runner; and the inner side of one end of the sizing sleeve core is provided with a chamfered R surface through which the pipe enters the sizing sleeve. The sizing sleeve shell is provided with a water inlet and a vacuumizing port, wherein the water inlet is correspondingly communicated with the water inlet groove in the sizing sleeve core. The sizing sleeve has reasonable and scientific structure; the sizing sleeve is provided with an independent vacuumizing system and an independent cooling system and made of high-hardness stainless steel, and the inner surface of the sizing sleeve is not easily scratched by a steel wire, so that the sizing sleeve is more durable and has longer service life. The whole equipment is low in manufacturing cost, has great significance for improving quality of products, and is popular among enterprises in the industry all the time.

The invention provides an adjustable and movable lever indicator bracket on a test flat plate, which relates to a test device. The lever indicator bracket comprises a base, a supporting rod and a dial indicator fixing rod, wherein the supporting rod is fixed on the base; the dial indicator fixing rod is fixed on the supporting rod through a fixed adjusting mechanism, so the dial indicator fixing rod can point to the surface of a tested part at a certain angle, the dial indicator fixing rod can move up and down on the supporting rod to adjust the height, can expand along the axial direction of the dial indicator fixing rod to adjust the extension length of the dial indicator fixing rod; an extension end of the dial indicator fixing rod is provided with a dial indicator clamping mechanism for clamping the lever indicator; and the base is provided with a lever fine adjustment mechanism, so the lever indicator bracket slightly oscillates forward and backward to finely adjust the height of a spherical measuring head of the lever indicator and the force pressing towards the surface of the tested part. The lever indicator bracket can be directly used for detecting the parallelism of regular parts on the test flat plate, and is very convenient and practical.

The invention relates to the field of airborne electronic equipment power electronics, in particular to a surge current suppressor. The surge current suppressor is connected to the circuit of the input power supply in series and comprises a power MOS tube connected in series in the circuit of a direct-current input negative end; a current measuring element connected in series in the circuit of thedirect-current input negative end and used for inputting the current of the power supply circuit and converting the current into a voltage; a feedback circuit connected with the current measuring element and the power MOS tube, when the voltage value detected by the current measuring element is larger than or equal to the first preset value, the power MOS tube is enabled to be in a current limiting state. The surge current suppressor is advanced and reliable in principle and can achieve a startup surge suppression function, and compared with the traditional mode, the function realization is simple and reliable, and the power consumption is low, the cost is low, the occupied area of the printed board is small, and the weight is light.

The invention relates to a clamping piece feeding and distributing device. The clamping piece feeding and distributing device comprises a conveying device, a pushing device and a feeding pipe, a conveying line chain plate is arranged at the bottom of a conveying groove, the pushing device comprises a limiting plate, a pushing plate, a blanking groove and an air cylinder, the blanking groove is formed in one side of the conveying groove, the limiting plate is arranged in the conveying groove, the limiting plate and the side wall of one side of the conveying groove form a pushing groove, a discharge hole is formed in the side wall, the pushing groove communicates with an inlet in one end of the blanking groove through the discharging hole, the other end of the blanking groove is an outlet, the pushing plate is arranged in the pushing groove, the pushing plate can move in the pushing groove in a direction towards the blanking groove, the pushing plate is connected to the air cylinder, a feeding port is formed in an upper port of the feeding pipe, the feeding port is of a rectangular structure, an inclined sliding plate is arranged at the upper end of the feeding port, and the feedingport is connected to the feeding pipe through a connecting pipe. Clamping pieces are poured into the feeding port in a forward inclining mode at an outlet of the discharging groove and slide downwardsinto the feeding pipe through the sliding plate.

The invention discloses a novel connection mode for steel mesh skeleton plastic compound pipelines. By adopting two inner sleeve iron castings, two outer sleeve iron castings and flexible quick couplings to serve as pipeline connecting pieces, firstly, the two outer sleeve iron castings are sheathed onto the outer pipe walls of the ports of the pipelines; then, one ends of the two inner sleeve iron castings are jacked into the ports of the pipelines by adopting a pipe jacking machine; then, the ports of the pipelines, which are provided with the two inner sleeve iron castings and the two outer sleeve iron castings, are put in a shrink machine to be extruded, shrunk, sealed and fixed; the other ends of the two inner sleeve iron castings extend out of the ports of the pipelines; the two inner sleeve iron castings extending out of the ports of the pipelines are connected together in the manner of clamping by using the flexible quick couplings; rubber seal rings are respectively arranged in the flexible quick couplings; and the flexible quick couplings are shrunk by screws to extrude the rubber seal rings to deform to seal and fix the two inner sleeve iron castings. The novel connection mode for the steel mesh skeleton plastic compound pipelines has the advantages that the method is advanced and the structure is simple. The produced compound pipes are safer and more reliable in seal and installation structure. Installation materials, such as a welding machine, are not needed, thereby, the installation cost is lower, and the pipeline installation efficiency is greatly increased.

The invention discloses an intelligent ship identity recognition method and system based on a twin network. The method comprises steps: constructing the twin network based on a deep convolutional neural network, manufacturing a ship name picture sample data set, and training the twin network by using the data set. The ship name information of the ship board position can be accurately matched and recognized, and the ship identity information can be intelligently recognized. According to the invention, the ship identity can be intelligently identified based on the ship video image, water supervisors are helped to better identify the real identity of the ship and acquire detailed information of the ship, and compared with other methods using artificial intelligence, such as a ship shape feature extraction method and an optical character-based identification method, the provided method is characterized in that the required requirements on definition of required training picture set are low, quantity requirements are low, the training picture set is easier to obtain, the detection accuracy is higher, the ship identification range can be conveniently expanded, and the method has the capability of being applied to actual engineering.

The invention, which belongs to the technical field of signal isolation transmission, relates to an isolation type numerical control constant-current source module comprising a digital signal isolation unit, a small signal amplification unit, a core processing unit, a current adjustment and voltage stabilization unit and a sampling unit. The digital signal isolation unit is responsible for carrying out electrical isolation on source equipment and a digital communication link of the isolation type numerical control constant-current source module. The small signal amplification unit amplifies asampling signal. The core processing unit is responsible for outputting a PWM signal to control the current adjustment and voltage stabilization unit to generate a current matching a set value. The current adjustment and voltage stabilization unit steals energy from the target equipment and adjusts the current returned to the target equipment. The sampling unit samples the current returned to thetarget equipment. According to the invention, the signal isolation circuit and the transmitter can work normally without an independent power supply. The circuit structure is simple; the integration is easy to realize; and production becomes convenient.

The invention relates to the technical field of production of marine heavy fuel oil, in particular to a method for producing special marine heavy fuel oil by taking coal tar as a raw material. The method comprises the following steps: (1) dehydrating full-fraction coal tar, removing mechanical impurities, feeding the full-fraction coal tar and hydrogen into a fluidized bed reactor, and carrying out hydrofining reaction under the action of a fluidized bed hydrotreating catalyst under selected process conditions; (2) sequentially carrying out high-low pressure separation and normal-pressure and vacuum fractionation on the reaction product in the step (1) to obtain light distillate oil and heavy distillate oil; (3) introducing the heavy distillate oil obtained in the step (2) into a non-hydrodewaxing fixed bed reactor, and carrying out dewaxing treatment through a non-hydrodewaxing catalyst and an active adsorbent under selected process conditions; and (4) carrying out normal-pressure fractionation treatment on the reaction product in the step (3) to obtain light distillate oil and special marine heavy fuel oil. According to the invention, the technical blank of producing the special marine heavy fuel oil by using the coal tar as the raw material is filled.

The invention relates to an airway bird dispelling system, comprising a central control unit and dispelling branch units; the dispelling branch units include a dispelling part, a suspending part, positioning parts, an energy source part and a signal transmitter; the suspending part provides suspending power for the dispelling branch unit and keeping the dispelling branch units within a fixed aerial range; the positioning parts and the signal transmitter are connected with the central control unit and an airplane in wireless manner; the energy source part provides energy for the positioning part, the suspending part, the dispelling part and the signal transmitter; the dispelling branch units are distributed outside an airway in relatively independent manner, the dispelling branch units are communicated through the positioning parts, and the dispelling branch units are communicated with the central control unit through the positioning parts. The airway bird dispelling system can guard airplanes in the whole flight course, can effectively dispel birds around an airway such that flight safety coefficient of the airplanes is increased greatly and accident occurrence is reduced, and may also protect birds from hurt.

The invention relates to an output isolation constant-current source circuit with PWM (pulse width regulation) regulation and control functions, and belongs to the field of designs. The output isolation constant-current source circuit comprises an isolation control circuit, a constant-current source circuit and a filter circuit. The output isolation constant-current source circuit has the advantages that pulse currents can be generated under the control of PWM signals, constant currents which are in linear relations with the pulse widths of the PWM signals can be generated after the pulse currents are filtered, the output isolation constant-current source circuit is simple in structure and low in cost, and miniaturization and lightweight production can be facilitated.

The invention relates to a steel wire mesh frame polyethylene composite tube external layer sizing sleeve. The steel wire mesh frame polyethylene composite tube external layer sizing sleeve is arranged and connected between a steel wire mesh frame polyethylene composite tube extruder head and a vacuum cooling sizing box, and comprises a sizing sleeve water ring, a sizing sleeve inner core and a connecting flange, the sizing sleeve inner core is inlaid in the sizing sleeve water ring, the sizing sleeve water ring is provided with water inlets and a water outlet, the sizing sleeve water ring and the connecting flange form one body, steel frame polyethylene composite tube production line external layer vacuum sizing box is connected through the flange, and the sizing sleeve water ring penetrates deeply into the vacuum sizing box. The steel wire mesh frame polyethylene composite tube external layer sizing sleeve has the advantages of simple structure and installation convenience, and allows the outer wall of the tube to be flattened and smooth through friction of the outer wall of the tube and the inner wall of the sizing sleeve inner core when the tube passes by the sizing sleeve. The appearance of the steel wire mesh frame polyethylene composite tube of different specification models can be completely improved by replacing different specification models of the sizing sleeve.

The invention relates to a circuit and a transmitter for isolating 4-20 mA DC signals and belongs to the technical field of signal isolating transmission. The circuit comprises an electricity stealingshunting and sampling unit, a small signal amplifying unit, a core processing unit and one or more signal output units, wherein the electricity stealing shunting and sampling unit steals energy fromsource equipment and samples an input current signal; the small signal amplifying unit amplifies the sampled signal; the core processing unit converts the amplified sampled signal into a correspondingdigital value and a PWM signal; each signal output unit consists of a controllable constant current source unit and a filtering unit, the controllable constant current source is controlled by the PWMsignal to generate a pulse current signal, and the pulse current signal generates a constant current signal in linear relation with current of an input end after passing through the filtering unit. The signal isolating circuit and the transmitter can work normally without independent power supplies, and the circuit is simple in structure, easy to integrate and convenient to produce.

The invention provides a rotating shaft structure of displays. The rotating shaft structure of displays is arranged on a display, and the display comprises a rear shell and a base; the rotating shaft structure of displays comprises two bushes, a first rotating shaft and a second rotating shaft, wherein the two bushes are arranged on the inner side of the rear shell; the first rotating shaft comprises a first support part and a second support part, and the first support part and the second support part are respectively arranged in the two bushes, so that the first shaft rotates by taking the central axis of the two bushes as an axis center; and the second rotating shaft comprises a first fixed part, a second fixed part and a pin-jointed part, the first fixed part and the second fixed part can rotate relative to each other, the first fixed part and the first rotating shaft are combined and fixed, and the second fixed part and the rear shell are combined and fixed, therefore, the rear shell can be supported and fixed on the base through the rotating shaft structure for displays. The rotating shaft structure for displays disclosed by the invention is simple in structure and low in cost, and has great practical values.

The invention relates to an automatic feeding and distributing device for clamping pieces. The device comprises a conveying device and a pushing device; the conveying device includes a conveying trough and a conveying line chain plate; the conveying line chain plate is arranged at the bottom part of the conveying though; the pushing device includes a limiting plate, a pushing plate, a dropping trough and an air cylinder; the dropping trough is arranged at one side of the conveying trough; the limiting plate is arranged in the conveying trough; the limiting plate and the side wall of one side of the conveying trough form a pushing trough; a discharge hole is formed in the side wall of the conveying trough; the pushing trough communicates with the dropping trough through the discharge hole;the pushing plate is arranged in the pushing trough; the pushing plate can move towards the dropping trough in the pushing trough; the pushing plate is connected with the air cylinder; the air cylinder is arranged above the conveying trough through a fixed plate; by control of the air cylinder, the pushing plate can push the clamping pieces conveyed into the pushing trough into the dropping trough; and a dropping hole is formed in the bottom part of one end, away from the pushing plate, of the dropping trough. The device can convey the clamping pieces into a discharging pipe one by one, and guarantees machining of the clamping pieces.

The invention proposes a high-power and high-voltage DC charging device. The high-power and high-voltage DC charging device comprises a three-phase electrical input module, a three-phase filter module, a three-phase pulse width modulation (PWM) rectification module, a BUCK circuit module, a DC filter module, a control module and a sampling module, wherein the input of the sampling module is connected with the DC filter module, the BUCK circuit module and the three-phase filter module separately, the output of a DC feedback value and the output of an AC feedback value of the sampling module are separately connected with the input of the control module, and the control module adopts a control method of combining DC current forward feedback, a voltage ring PI control, a current ring PI control and a hysteresis control to achieve DC charging control and also comprises an inversion control method. The high-power and high-voltage DC charging device has the advantages of fast control speed, smooth adjustment on output voltage and current and small output harmonic, the high-power and high-voltage DC output is achieved, and the inversion function also can be achieved.

The invention discloses a test method and clamp for a steel mesh frame plastic composite tube. The method comprises the following steps of: preparing test clamps; and mounting the prepared test clamps at the two ends of a pressure test tube to be tested, wherein a fastening jaw of each test clamp is sleeved and clamped on the periphery of the pressure test tube end; a clamp pedestal is sleeved on the tube end of the pressure test tube through the fastening jaw, a rubber seal and a seal pressing plate; the rubber seal is arranged between the clamp pedestal and the pressure test tube; the seal pressing plate is arranged between the clamp pedestal and the fastening jaw; the rubber seal is squeezed among the clamp pedestal, the pressure test tube and the seal pressing plate; and the fastening jaw is fixedly connected with the clamp pedestal through a fastening bolt. Stripping strength and compressive strength of the pressure test tube are tested by taking water as a medium for the pressure test tube provided with the test clamp. The method is simple and convenient; the device has a simple structure and is easy to operate. The entire set of equipment is low in manufacturing cost and can be easily accepted by many enterprises.