206results about How to "Realize transformation" patented technology

The invention relates to the technical field of power electronic current transformers, and provides a resonance-type power electronic current transformer and a current transformer device. The current transformer comprises an input-stage rectifying circuit and a rear-stage DC/DC circuit. The input-stage rectifying circuit comprises three bridge arms. Each bridge arm is composed of an upper half bridge arm body and a lower half bridge arm body. The midpoints of the bridge arms are connected with three phases of a high-voltage alternating-current power grid respectively. Each half bridge arm body comprises n module units. Ports of the module units are connected in a head-to-tail mode to form a bridge arm structure. Due to the high-frequency isolation of the input side and the output side, a heavy lower-frequency transformer is removed, and meanwhile efficient energy transmission and intelligent control are achieved. Harmonic wave transmission between different power grids and mutual influences caused by failures of the different power grids can be intercepted, meanwhile, the range of the output voltage is wide, continuous adjustment of the current and the voltage can be achieved, system operation information of the current transformer is easy and convenient to collect, mutual communication can be achieved among a plurality of current transformer systems, and the intelligent power grid is obtained.

The invention provides a cold-storage plant and a shelf assembly thereof. The shelf assembly comprises layer frames, a movable support, at least two groups of connection rods and a carrier, wherein the movable support is movably connected onto the layer frames, one end of each connection rod is connected with the movable support pivotally, and the carrier is connected with the other end of the corresponding connection rod pivotally. A folding state limit portion is arranged on the movable support and used for limiting the connection rods or the carrier folded to the bottom of the movable support. When the carrier is folded, the two adjacent layer frames are not separated. When the carrier is unfolded, the carrier serves as a part for assisting in carrying objects between the two adjacent layer frames and separates the space between the two adjacent layer frames, and at the moment, the movable support can drive the connection rods and the carrier to move on the layer frames to perform space change. Therefore, by means of the shelf assembly of the cold-storage plant, cold-storage space is distributed flexibly, and combined storage of foods of different height on the same layer frames can be achieved.

The invention discloses a 3D (Three Dimensional) printer capable of changing spraying heads for printing. The 3D printer comprises a material feeding device, a heating and clamping device (1), a driving device, a positioning device, a base (5), spraying heads (10) and a control system, wherein the heating and clamping device comprises a heating device and an electromagnet; a material inlet (7) is formed in the top part of the heating and clamping device; the driving device comprises a driving motor (2) and a driving gear (3); the positioning device comprises a positioning motor (6) and a positioning pin (9); the base is provided with material outlets, positioning holes and a rack of which the two ends are provided with position switches (4); the base is connected with the heating and clamping device; the spraying heads comprise a spraying head I and a spraying head II; and the control system is connected with the material feeding device, the driving device, the positioning device and the spraying heads. According to the 3D printer disclosed by the invention, the free change of the spraying heads is realized; processing materials with different diameters are sprayed at different working conditions; the processing efficiency is improved; the raw materials are saved; the production cost is lowered; meanwhile high-precision change of the spraying heads is realized through the positioning device; and the processing precision of parts is improved.

The invention relates to a preparation method of an electrochromic intelligent fiber. The preparation method of the electrochromic intelligent fiber comprises the following steps: dissolving 3,4-ethylenedioxythiophene in lithium perchlorate propylene carbonate solution to obtain a deposition solution, then vertically placing a stainless steel fiber subjected to ultrasonic washing into the deposition solution for carrying out electrolytic deposition, performing vacuum drying, so that the stainless steel fiber coated with poly(3,4-ethylenedioxythiophene) (PEDOT) is obtained; dipping gel electrolyte on the stainless steel fibers coated with PEDOT, drying at room temperature, then winding another stainless steel fiber on the stainless steel fiber dipped with the gel electrolyte, dipping the gel electrolyte again, and drying at room temperature, so that the electrochromic intelligent fiber is obtained. The preparation method of the electrochromic intelligent fiber is simple, low in cost and applicable to large-scale production; the prepared electrochromic intelligent fiber has good optical property, high transformation speed, good flexibility and obvious gradient effect.

The invention relates to the technical field of distributed computing, in particular to a cooperative secret sharing method, device and system based on a vacant transmission algorithm, and a medium. The method comprises the following steps that: S1: a first communication party and a second communication party respectively obtain a first secret component and a second secret component which are subjected to multiplication decomposition, and select common parameters; S2, the second communication party performs calculation based on an SM2 algorithm to obtain a confusion factor set, and sends the confusion factor set to the first communication party; S3, the first communication party calculates random parameters and an encryption result set and sends the random parameters and the encryption result set to the second communication party, and the first communication party calculates to obtain a first decomposition component of additive decomposition; and S4, the second communication party calculates a sharing parameter set according to the random parameters and the encryption result set, and calculates to obtain a second decomposition component of additive decomposition. According to the method, the vacant transmission algorithm is adopted, safe two-party calculation is efficiently achieved under the condition that a safe channel is not needed, and conversion and calculation of the shared secret data are achieved.

A voice box which can be shot out in vertical type includes a main body of voice box, a motion guiding integrated in one body with the main body and its one side face with locking parts and adjacent side face to it with sliding pin; a motion rail with chassis and spring being set in it, a motion mechanism support being connected in fixture with chassis and its middle part set with support rib which has locking piece at middle part to form locking mechanism together with above-mentioned locking parts. It also includes a housing with its edge being set with sliding guide rod and a pair of ledgeset in opporsite and its end part being set in fixture with pin shaft which is inserted in shaft hole on the side face of motion mechanism frame as well as convex block fabricated on the middle of sliding guide rod with its tail end being prepared to become smooth and round surface.

The invention discloses auxiliary driving equipment based on voice control. The auxiliary driving equipment comprises an environment sensing module, a driver monitoring module, a voice processing module, a driving decision module, an execution module and a man-machine interaction module. The invention also discloses an auxiliary driving method based on voice control. The method is executed by theauxiliary driving equipment based on voice control, and comprises the following steps: waking up: waking up the auxiliary driving equipment according to a voice waking-up instruction of a driver; sensing an environment: sensing the driving state of the vehicle and the surrounding driving environment, and generating an environment sensing signal; monitoring a driver: monitoring the state of the driver and generating a driver monitoring signal; acquiring a voice instruction: acquiring and processing a sound signal in the vehicle and identifying the voice instruction of the driver from the soundsignal; making a driving decision: generating a driving instruction according to the environment sensing signal, the driver monitoring signal and the voice instruction; and executing: adjusting the driving state of the vehicle according to the driving instruction.

The invention discloses a tire retreading process and tire retreading equipment. The retreading process comprises the following steps of: (a), initial tire checking; (b), polishing and cleaning; (c), gluing and drying; (d), cushion rubber pasting; (e), tread rubber pasting; (f), vulcanization; and (g), product finishing, wherein a tire is conveyed through a vertical conveying track in coordination with suspension arms in every step. The tire retreading process has the advantages of scientificity, high efficiency, high quality of produced products and the like. The tire retreading equipment comprises the vertical conveying track, a tire detecting machine, a tire tread polishing machine, a tire checking machine, a gluing room, a drying room, a cushion rubber pasting machine, a tread rubber pasting machine, an envelope disassembling and assembling machine, a steel ring disassembling and assembling machine, a transitional rack and a tire vulcanization tank. The tire retreading equipment has the advantages of high production efficiency, low production cost, convenience for operation, safety and the like.

The invention discloses a color photovoltaic module and a preparation method thereof. The color photovoltaic module comprises a lamination structure which is formed by laminating a first packaging part, a first packaging adhesive film layer, a solar cell string and a second packaging part. The first packaging part comprises a transparent film layer which is prepared from a color thermoplastic high-molecular polymer, and the relative molecular mass of the color thermoplastic high-molecular polymer is greater than 20000. The color photovoltaic module costs low and is light. Under the premise that the technical standard requirements for ultraviolet resistance, aging resistance, impact resistance, fire prevention and insulation resistance in the photovoltaic industry are satisfied, the packaging material of the photovoltaic module is light, the installation cost of the photovoltaic module is reduced on the whole, and the photovoltaic module is very suitable for large-scale promotion and application in the field of photovoltaic building materials. Moreover, the appearance color of the photovoltaic module can be freely selected and changed, and the photovoltaic module looks more beautiful.

The invention discloses a gear shifting operating control device for an electric vehicle with a neutral position. The device comprises an outer shell, a rotating shaft is rotatably installed in the outer shell, one end of the rotating shaft extends out of the outer shell to be fixedly connected with an operating rod, a positioning disc is fixedly sleeved on the rotating shaft, a high-speed groove, a neutral position groove and a low-speed groove are mounted on one side of the positioning disc, a positioning spring sleeve is disposed on the outer side of the positioning disc, a positioning spring is disposed in the positioning spring sleeve, locating pins which are matched with the high-speed groove, the neutral position groove and the low-speed groove are pressed at the front end of the positioning spring, a rocking back is fixedly arranged at the lower end of the operating rod, and a pull wire is fixedly connected with the rocking back. According to the gear shifting operating control device for the electric vehicle with the neutral position, the locating pins are tightly inlaid in the grooves of the positioning disc under the pressure of the positioning spring during working, the rocking back is installed on the rotating shaft, the pull wire is installed on the rocking back, and the pull wire pulls a shifting fork of a gear shifting motor to achieve gear shifting.

A method, a computer program, a computer program product and a computed tomography system are disclosed. The image data is a spatially three-dimensional reconstruction. At least one value for an image metric of the image data is determined. A motion field for motion compensation of the image data is then determined on the basis of image data as a function of the image metric. Essentially, partial image data is determined, wherein the partial image data corresponds in each case to the spatially three-dimensional reconstruction from scan data of an angular sub-range. The motion field of the image data is determined at the control points via an optimization method as a function of the image metric, so that, thereafter, the partial image data is transformed in accordance with the motion of the motion field. New image data is then produced by merging the partial image data.

Ultraviolet ray chameleon paint comprises the following raw materials of, by weight, 5-25 parts of a membrane formation resin, 20-40 parts of a solvent, 8-12 parts of an ultraviolet ray sensitive microcapsule, 0.05-0.5 part of an antifoaming agent, 0.5-10 parts of a stabilizing agent and 16-20 parts of deionized water. The particle size of the ultraviolet ray sensitive microcapsule is 1-10 mu m, the membrane formation resin is one of an alcohol acid resin, a crylic acid resin, a chlorination rubber resin and an epoxy resin, the solvent is acetic ether or turpentine oil or cyclohexanone, and the stabilizing agent is zinc dibenzoate or 2-hydroxypyridine. According to the ultraviolet ray chameleon paint, the ultraviolet ray sensitive microcapsule is particularly added, the color of the ultraviolet ray sensitive microcapsule changes with the intensities of ultraviolet rays in the sunshine, and the ultraviolet ray chameleon paint is attractive, novel and particularly applied to outdoor hand rails, hand guards and the like.

The invention discloses a single-phase system phase-locked-loop-free instantaneous power calculation and phase-locked-loop-free frequency compensation algorithm. The algorithm mainly comprises two parts including single-phase phase-locked-loop-free power calculation (03) and frequency compensation matrix component calculation (05), the single-phase system instantaneous power calculation (03) and the frequency compensation matrix component calculation (05) can be achieved only through a local sine and cosine signal (01), a digital filter and simple operation, phase-locked loops are not needed, the design difficulty of the phase-locked loops is reduced, and the software and hardware design difficulty is further reduced.

The invention relates to the technical field of material conveying, and discloses a gripper mechanism capable of changing modes. The gripper mechanism comprises a main shaft, wherein a shaft sleeve sleeves the outer surface of the main shaft, a cup-shaped piece is in threaded connection with the outer part of the shaft sleeve, a sliding sleeve sleeves outside the shaft sleeve, a fixing plate is coupled to the outside of the shaft sleeve, and a connecting plate is fixedly connected to the tail end of the main shaft; positioning holes are formed in the bottom face of the cup-shaped piece, a telescopic rod is arranged in each positioning hole, the telescopic rods are fixedly connected with the end face of the bottom of the sliding sleeve, limiting grooves are symmetrically formed in the outerwall of the cup-shaped piece, and ear grooves are formed in the outer wall of the sliding sleeve. According to the gripper mechanism capable of changing the modes, the sliding sleeve is pushed downwards by the telescopic rods to enable first movable rods to rotate around the limiting grooves as the inner shaft, and second movable rods are driven to rise to drive first grabbing arms to close to grab materials; and when second grabbing arms work, the telescopic rods contract, the first grabbing arms are driven to open in sequence, the main shaft reversely rotates to drive the second grabbing arms to close to grab materials, and conversion of the two grabbing modes is realized.

The invention discloses a fractional order element converter, and belongs to the technical field of theory of electrical engineering. The fractional order element converter is structurally and functionally characterized in that a minimum number of active integrated devices and existing circuit elements are connected according to a designed circuit topological structure, and the existing circuit elements in a circuit are configured reasonably, so that fractional order conversion, order conversion and element value conversion can be realized. The fractional order element converter has the characteristic of comprehensive and flexible functions, and the following functions can be realized: firstly, conversion of fractional order element types can be realized to obtain a fractional order element of a needed type; secondly, conversion of fractional order element orders can be realized to obtain a fraction order element of a needed order; thirdly, conversion of fractional order element values can be realized to obtain a fraction order element of a needed element value. By using the fractional order element converter, an integer order element can be obtained through the fractional order element.

The invention discloses an automatic feeding device for long pole workpieces. The automatic feeding device comprises a cantilever crane and a clamp assembly which is connected with the cantilever crane through an adapting flange. The clamp assembly comprises a single-pole clamp and a three-pole clamp. According to the automatic feeding device for the long pole workpieces, the long pole workpieces can be carried by one person without assistance of other persons, and the labor intensity of the personnel is relieved; due to the design of the single-pole clamp, a single long pole workpiece can be clamped; due to the design of the three-pole clamp, three long pole workpieces can be clamped simultaneously; and due to the design of the adapting flange, the cantilever crane and the clamps can be connected, and the single-pole clamp and the three-pole clamp can be converted.

The invention provides a floating box locking device and a wind power platform, and the floating box locking device comprises a middle plate, wherein rotating support arms are installed on the two sides of the middle plate; a fixing structure is mounted at the tail end of each support arm; a connecting block which is installed on the side wall of the floating box, wherein after the fixing structure is inserted into the connecting block, the support arms and the floating box are fixedly connected through the fixing structure; an adjusting assembly which comprises a connecting arm, wherein the connecting arm can be stored in the support arms and can slide relative to the support arms; by changing the connection state of the ends, close to each other, of the two connecting arms, the floating boxes are switched between the fixed state and the flexible connection state. Through assembly and disassembly of the fixing structures and the connecting blocks, a worker can conveniently and easily disassemble and assemble the two floating boxes. The floating boxes are switched between the fixed state and the flexible connection state through the adjusting assemblies, operation is simple and easy to implement, the worker can conveniently overhaul the water equipment in the later period, reconstruction can be conveniently conducted on the basis of the floating boxes, and thus the required purpose is achieved.