192 results about "Unit group" patented technology

The invention relates to the technical field of chip design, in particular to a system-on-chip design method and system and a medium. The method comprises the following steps that a chip design target and basic parameters are collected, a constraint condition set is generated through demand constraint analysis, the basic parameters of a system are subjected to parallel recombination, functional prototype data are generated, the functional prototype data are used for chip behavior design, functional unit groups are generated, a network architecture is reconstructed to form a functional module network, and the functional module network is used for chip behavior design. And carrying out clock domain mapping and competition compensation processing based on the network to obtain a function scheduling sequence, carrying out resource matrix remapping on the basic parameters according to the function scheduling sequence, generating hardware abstract data, carrying out chip layout simulation, and finally generating a simulation chip blueprint. According to the system-on-chip design method, the more efficient system-on-chip design method is achieved.

The invention relates to the technical field of wafer testing, and discloses a probe card and a testing system. The probe card comprises a plurality of unit groups which are periodically arranged; the unit group comprises at least two coaxial probes; wherein at least one coaxial probe is used for abutting against the input end of a to-be-tested device, and at least one coaxial probe is used for abutting against the output end of the to-be-tested device. According to the invention, through the plurality of unit groups arranged in the periodic array, a plurality of devices can be tested at a time when wafer testing is carried out, so that the wafer testing speed is improved, the wafer testing time is shortened, and the problems of low testing speed and long testing time existing in wafer testing in the prior art are solved.

A linear displacement sensor based on electric field self-coupling, comprising a moving scale base (1) and a fixed scale base (2). One or more paired electrode units are provided on the side surface of the moving scale base (1) facing the fixed scale base (2); each paired electrode unit comprises at least three sensing electrode groups spaced in the length direction of the moving scale base (1); each sensing electrode group comprises one excitation electrode (1-1) and one sensing electrode (1-2) spaced in the length direction of the moving scale base (1). A plurality of modulation unit groups arranged in the length direction of the fixed scale base (2) are provided on the side surface of the fixed scale base (2) facing the moving scale base (1); in the length direction of the fixed scale base (2), all the paired electrode units on the moving scale base (1) can respectively correspond to the same number of adjacent modulation unit groups on the fixed scale base (2); each modulation unit group comprises one modulation unit F(2-1) and one modulation unit G(2-2); the modulation unit F(2-1) can correspond to at least one sensing electrode group in the paired electrode units in the length direction of the fixed scale base (2).

The invention discloses a data processing method and system, electronic equipment and a medium, and relates to the technical field of storage. The output end of the memory controller unit is connected with the plurality of cache unit groups through a plurality of channels, and the channels are in one-to-one correspondence with the cache unit groups, so that a multi-channel architecture is constructed. When data processing is carried out based on a multi-channel architecture, after a memory address space is divided into different channels in advance, after a request sent by a request sender is received, a channel hit by a request address is determined according to a division result obtained after the memory address space is divided into the different channels in advance, and the channel hit by the request address is determined. And finally, in the memory connected with the channel hit by the request address, responding to the request based on the request address to realize data processing. And secondly, the memory address space is divided into different channels in advance, so that the multiple channels can process different read-write requests at the same time, the requirement for high-speed data processing is met, idle resources are avoided, and the resource utilization rate is increased.

A data processing method is provided. The implementation is: for each of a plurality of data blocks included in data to be processed, dividing the data block into a plurality of first sub-blocks corresponding to a plurality of computing unit groups respectively; for each first sub-block of the plurality of first sub-blocks, dividing the first sub-block, based on a target computing unit group corresponding to the first sub-block, into a plurality of second sub-blocks corresponding to the plurality of computing units in the target computing unit group, respectively; determining, by processing each second sub-block utilizing the corresponding computing unit of the second sub-block, a plurality of first processing results output by the plurality of computing units respectively; and determining a processing result of the first sub-block by performing a data reduction operation on the plurality of first processing results utilizing the target computing unit group.

The invention discloses a mismatch test structure and a forming method, a test method and a modeling method thereof, and the forming method comprises the steps: providing a to-be-tested device which comprises a substrate and a semiconductor device layer, and forming an array comprising a plurality of repeated device units in the semiconductor device layer, and selecting MOS transistors of the same type from the adjacent device unit groups as a to-be-tested mismatch module, wherein each MOS transistor in the to-be-tested mismatch module is provided with an adjacent MOS transistor which is commonly connected with the source end of the MOS transistor when the device works normally and an adjacent MOS transistor which is not commonly connected with the source end of the MOS transistor when the device works normally. MOS transistors of the same type are selected from adjacent device unit groups to serve as a to-be-tested mismatch module, each MOS transistor is provided with an adjacent transistor which is connected with a source end in common mode and is not provided with a source end in common mode, and the mismatch characteristics of the source end of each MOS transistor in a common connection state and a non-common connection state are tested at the same time.

The invention relates to a command stream detection method and device, electronic equipment and a storage medium, and the method comprises the steps: receiving a to-be-processed command stream driven and issued by a first processor in response to a target simulation model, and obtaining type configuration information from the to-be-processed command stream, the target simulation model being used for simulating a second processor; according to the type configuration information, an analysis unit group matched with the to-be-processed command stream is determined, and the analyzer comprises an analysis unit group used for being matched with different second processors; and according to the target simulation model and the analysis unit group, performing analysis processing on the to-be-processed command stream, and determining analysis information. According to the embodiment of the invention, the process of executing the to-be-processed command stream by the second processor can be analyzed and inspected, so that the detection process of the to-be-processed command stream becomes clear and visual, and the efficiency of debugging driver development is improved.

The invention discloses a photovoltaic module. The photovoltaic module comprises a battery unit group and a connecting structure, the battery unit group comprises a plurality of battery strings which are connected in series and / or in parallel; the connection structure comprises a bypass strip, the bypass strip is arranged between adjacent battery unit groups, the bypass strip comprises a first non-lead-out part, a second non-lead-out part and a lead-out part, the lead-out part is connected between the first non-lead-out part and the second non-lead-out part, and the lead-out part extends in the direction away from the first non-lead-out part and the second non-lead-out part. The lead-out part, the first non-lead-out part and the second non-lead-out part are integrally formed. Therefore, the leading-out part is formed on at least part of the bypass strip, the structure of the bypass strip is simplified, compared with the design of multiple leading-out ends of the bypass strip, the welding procedure can be reduced through one leading-out end, and the installation difficulty can be reduced when the leading-out part is connected with the junction box. And meanwhile, the bypass strip is integrally formed, so that the thickness of the non-lead-out part is prevented from being increased, and the risk of cracking the battery pieces on the battery string is effectively reduced.

The embodiment of the invention provides a display panel and a display device, relates to the technical field of display, and is used for improving the pixel aperture ratio of the display panel. A first unit group and a second unit group in the display panel are alternately arranged in a first direction, the first unit group comprises a plurality of first units arranged in a second direction, and the second unit group comprises a plurality of second units arranged in the second direction; each of the first unit and the second unit comprises a first sub-pixel, a second sub-pixel and a third sub-pixel; the shape of at least one of the first sub-pixel, the second sub-pixel and the third sub-pixel comprises an arc edge; in the first unit, the first sub-pixel and the third sub-pixel are arranged in the first direction, and the second sub-pixel is located on one side of the first sub-pixel and the third sub-pixel in the second direction; in the second unit, the first sub-pixel and the third sub-pixel are arranged in the first direction, and the second sub-pixel is located on the other side of the first sub-pixel and the third sub-pixel in the second direction.

The invention discloses a ferroelectric memory, a reading method and electronic equipment, the ferroelectric memory comprises a plurality of word lines, a plurality of bit lines and a plurality of ferroelectric memory units, a first ferroelectric memory unit and a second ferroelectric memory unit which are connected with the same word line form a unit group, so that a plurality of unit groups are divided; in any unit group, at least one bit line is arranged between the bit line connected with the first ferroelectric storage unit and the bit line connected with the second ferroelectric storage unit, so that the bit line between the bit lines connected with the first ferroelectric storage unit and the second ferroelectric storage unit is used as a shielding line, the problem of mutual coupling when the bit lines read signals is solved, and the signal reading efficiency is improved. And the signal reading accuracy is improved. Moreover, in the two adjacent unit groups connected to the same word line, the bit line connected with the first ferroelectric storage unit in one unit group is adjacent to the bit line connected with the second ferroelectric storage unit in the other unit group, so that the density of the ferroelectric storage units can be improved.

The invention relates to the technical field of energy supply system stability evaluation, in particular to an energy supply system stability evaluation method and system based on an energy unit and a medium. Acquiring operation parameter time sequence data of each energy unit; in view of fluctuation differences among energy units under different working conditions, time-level clustering is adopted to divide the energy units into unit groups, and representative vectors of the unit groups are extracted to reflect the overall operation condition of the unit groups. Then, time sequence data is divided into time periods, comprehensive clustering is carried out at the time period level, and in combination with the unit group operation condition, the distribution characteristics and the energy unit parameter similarity, an operation similarity value is constructed to measure the similarity of the system operation states in the time periods; the time periods are classified based on the operation similarity values, the time periods in the similar operation states can be accurately divided, the accuracy and typicality of target time period screening are effectively improved, and then the reliability of system stability evaluation is improved.

The invention provides a method for optimizing and grouping wire harness data of a power distribution cabinet. The method comprises the following steps: S1, optimizing the wire harness data and dividing the wire harness data into a head part, a skeleton part and a tail part; s2, calculating the length of each wire harness skeleton part, and arranging the wire harness skeleton parts in a descending order according to the skeleton lengths; the wire harness with the longest framework serves as a group head of a first group, the overlapping ratio of the subsequent wire harnesses and the framework part of each group head is calculated in sequence, and large-group division of the wire harnesses is carried out according to the overlapping ratio; s3, rearranging the wire harnesses in each large group according to the length of the overlapped part, and establishing a loss function to determine a minimum unit group; and S4, establishing a matching degree function, calculating the matching degree between the minimum units, combining the maximum values, and continuously iterating until convergence so as to integrate the data to obtain a final grouping result. According to the method, optimization and grouping of the wiring harness data of the power distribution cabinet are realized, data support is provided for manufacturing of prefabricated wiring harness groups on a pinboard drawing, and the feasibility and implementation efficiency of automatic wiring of the power distribution cabinet are greatly improved.

The application discloses a power distribution network scheduling method and system, and a computer program product, and belongs to the technical field of smart grids, and comprises the following steps: dividing a power distribution network into multiple power distribution network levels according to voltage grades, collecting data of each power distribution network level, setting a minimum total cost of virtual power plant output as a target function, and constructing an optimization model; starting from a lower power distribution network level, sequentially and independently calculating power flow of each power distribution network level, equivalently taking first-end injected power of the lower power distribution network level as corresponding node load of an upper level, outputting power flow operation conditions of each power distribution network level, establishing a power flow checking constraint model, judging whether the safety operation checking constraint is met, if yes, solving the optimization model by using an optimization algorithm to obtain the minimum total cost and corresponding output values of an output unit group, and if not, reassigning data to perform a new round of optimization. The application considers inverse-level dynamic coupling modeling of grid connection of new power generation units, and provides an integrated solution for dynamic safety and economic scheduling of the power distribution network.

The present application provides a display panel, a display device, and a wearable device. The display panel includes a display area (AA) and a peripheral area surrounding the display area (AA). The area other than the binding sub-area (B-D) in the peripheral area includes a first test unit group (T1) and a second test unit group (T2). The first test unit group (T1) and the second test unit group (T2) each include at least one circuit test unit (CP pad). The display area (AA) extends along a first direction (OA1) and includes a first side (L1) and a second side (L2) that are oppositely arranged. The first direction (OA1) is the direction in which the binding sub-area (B-D) points to the display area (AA). The maximum distance (d3) from the first test unit group (T1) to the first side (L1) in the direction perpendicular to the first direction (OA1) is equal to the maximum distance from the second test unit group (T2) to the second side (L2) in the direction perpendicular to the first direction (OA1). The display panel has low design difficulty and good display effect.

The present disclosure provides a fault processing method and device applied to a data processing apparatus, equipment and a medium, relates to the technical field of computers, and particularly relates to the fields of data processing, fault processing and chip technology. The implementation scheme is as follows: a plurality of unit groups are determined based on the grid-shaped topology of the data processing apparatus; it is determined whether each data processing unit is a faulty unit; for each unit group, in response to determining that the unit group does not include a faulty unit, the unit group is determined to be a valid group; in response to determining that the number of valid groups meets a preset condition, a configuration operation is sequentially performed on the plurality of unit groups, the configuration operation comprising: for each unit group, in response to determining that the unit group includes a faulty unit that is not placed in a bypass state, a plurality of data processing units in the unit group are placed in a bypass state, wherein the data input port and the data output port of the data processing unit placed in the bypass state are in short-circuit connection; and in response to determining that the number of valid groups does not meet the preset condition, the data processing apparatus is determined to be a faulty apparatus.

The invention relates to the technical field of CAD (Computer Aided Design) modeling, in particular to a sketch CAD model generation method based on a unit group structure, which comprises the following steps of: generating a sketch through a CLIPascene method based on different unit CAD models, and constructing a sketch data set; performing network training by using the sketch data set to obtain a modeling category and corresponding parameters of the sketch; generating an initialized CAD model according to the modeling category and the corresponding parameters of the sketch; and carrying out parameter optimization on the initialized CAD model by adopting a core-to-fine strategy, so as to obtain a reconstructed CAD model. Compared with the prior art, the method has the advantages that the sketching data set which contains different drawing styles and multiple modeling operation semantics is constructed, complex modeling types which cannot be reconstructed by an existing method are realized, and better robustness is obtained.

The utility model relates to the technical field of wind power generation devices, and discloses a split mounting type bidirectional rotating wind power generation tower which comprises a supporting tower base and a multi-layer type tower frame, the multi-layer type tower frame is formed by vertically splicing an odd number of tower frame sub-units, and every two adjacent tower frame sub-units form a tower frame unit group from the supporting tower base upwards. A first power generation mechanism is arranged in each tower unit group, and a second power generation mechanism is arranged at the top of the multi-layer tower; the first power generation mechanism comprises an upper main shaft, a lower main shaft, a first upper combined type blade, a first lower combined type blade and at least one vertical shaft bidirectional rotating generator set; the upper main shaft and the lower main shaft are provided with a magnetic suspension assembly and a brake assembly, and the lower end of the upper main shaft and the lower end of the lower main shaft are rotationally connected with the multi-layer tower through first thrust bearings. The power generation device has the advantages of flexibility in use, high power generation efficiency and stability in operation.

A display substrate and a display device, the display substrate comprising a display area (91) and a peripheral area, the peripheral area comprising a circuit area (92), the display area comprising: a plurality of sub-pixels (1), a plurality of data lines (11) extending along a first direction (991), and a plurality of gate lines (12) extending along a second direction (992); the circuit area (92) comprising a plurality of driving unit groups, the circuit area (92) comprising a first sub-area (921) and a second sub-area (922) opposite on both sides of the display area (91) along the first direction (991), the first sub-area (921) comprising a plurality of multiplexing unit groups, and the second sub-area (922) comprising a plurality of test unit groups, the driving unit (4) being configured to provide a driving signal to the gate line (12), the multiplexing unit (2) being configured to provide a data signal to the data line (11), and the test unit (3) being configured to provide a test signal to the data line (11); in the first sub-area (921), the driving unit groups and the multiplexing unit groups are arranged alternately; and in the second sub-area (922), the driving unit groups and the test unit groups are arranged alternately.

The invention discloses a continuous acoustic strengthening system and method, and relates to the technical field of raw material treatment and process strengthening treatment, the continuous acoustic strengthening system comprises a bottle A, a pump set, a strengthening unit set, a mechanical resonator and a bottle B; the strengthening unit group is not less than one container with an inlet and an outlet; the pump set consists of a pipeline, a pump and a valve, and can be used for pumping contents in the bottle A / bottle B to the bottle B / bottle A through the strengthening unit set; the mechanical resonator is a multi-mass vibration system and forms a mechanical resonance system with the strengthening unit group, so that the strengthening unit group can generate mechanical resonance with the frequency ranging from 40Hz to 80Hz and the amplitude ranging from 2mm to 20mm; according to the continuous acoustic strengthening system and method, the materials continuously entering the strengthening unit group are subjected to continuous acoustic strengthening treatment, so that various treatment purposes of the materials, such as mixing, dispersing, coating, polishing, crushing, emulsifying, extracting, dissolving and chemical reaction strengthening of the raw materials can be completed.

The invention discloses an automatic batch detection method for multifunctional meters. The method comprises the following steps: (1) constructing a detection system by adopting a standard source, a current relay, a communication relay and a control system, and establishing a detection unit group; (2) detecting system line connection; (3) address setting: in the address setting process, addresses are allocated to all the to-be-tested multifunctional meters in sequence, and the to-be-tested multifunctional meters are in an online state; and (4) power-on test: the control system compares detection data with standard data output by the standard source to judge whether an error is within an allowable range, namely whether the product is qualified. The device has the advantages that addresses of newly-installed multifunctional meters can be automatically modified in sequence through the on-off mode of the relays, the address conflict problem is effectively prevented, and the number of detection instruments can be set through the on-off mode of the relays.

The invention discloses a light mixing RGB stacking structure and a packaging method thereof, and the method comprises the following steps: pasting a chip on a substrate packaged with a metal block, packaging the chip, and grinding a packaging surface to expose the front surface of the chip; drilling a hole on the packaging surface exposing the front surface of the chip until the top surface of the metal block is exposed, extending electroplating metal in the hole and on the packaging surface, transferring the electrical property of part of the electrode on the front surface of the chip to the metal block from the electroplating metal, leading out to the bottom surface, and packaging the electroplating metal; drilling holes in the packaging surface until other electrodes on the front surface of the chip are exposed, electrically leading the other electrodes on the front surface of the chip to the top surface by the electroplating circuit, and packaging the circuit; etching a groove on the top surface of the encapsulation to expose the top surface of the circuit, and mounting the light-emitting unit group in the groove and connecting the light-emitting unit group with the circuit to realize electrical connection between the chip and the light-emitting unit group; the whole size is reduced, the inner wall of the groove formed by the encapsulation body has a reflecting and gathering effect on the three-primary-color lamp beads of the light-emitting unit group, and the light mixing effect is good.

The embodiment of the present application discloses a display panel, the display panel comprises a light-emitting layer and an adjusting layer, the light-emitting layer comprises a plurality of light-emitting unit groups arranged along a first direction, each light-emitting unit group comprises at least one light-emitting unit, and the plurality of light-emitting unit groups comprise a visual center unit group; the adjusting layer comprises a plurality of adjusting unit groups corresponding to the light-emitting unit groups; the adjusting layer is arranged on one side of the light-emitting layer; when the adjusting layer is arranged on the backlight side of the light-emitting layer, different adjusting unit groups can be arranged to have different thicknesses or different inclination angle numbers; when the adjusting layer is arranged on the light-emitting side of the light-emitting layer, different adjusting unit groups can be arranged to have different refractive indexes, so that the chroma difference of the electroluminescent display device caused by the viewing angle difference of the user is reduced, and the display effect of the display panel is further improved.

Embodiments of the present application provide a control channel unit determination method and device, and a storage medium, wherein the control channel unit determination method comprises: selecting part of resource unit groups in N resource unit groups to form a control channel unit, and forming a control channel unit by at least one of the following ways: for a physical downlink control channel (PDCCH) based on a demodulation reference signal (DMRS), when the mapping between a control channel unit (CCE) and a resource element group (REG) is distributed mapping, at least the following principle is satisfied: M REGs are equally spaced or discretely spaced in the frequency domain to form a CCE, wherein M is the number of REGs contained in K RBs in a transmission time interval, K is a positive integer, and N is a positive integer; for a PDCCH based on a cell reference signal (CRS), when the mapping between a CCE and a REG is distributed mapping, at least the following principle is satisfied: a group of REGs equally spaced or discretely spaced in the frequency domain form a CCE in a single symbol.

The invention provides a flexible anchor group structure and a construction method thereof.The flexible anchor group structure comprises one or more unit anchor group structures, each unit anchor group structure comprises a plurality of gravity blocks, the gravity blocks are connected into a net-shaped structure through flexible cables, and each gravity block is located on a lattice point of the net-shaped structure; the net-shaped structure is provided with one or more connecting points capable of being connected with the connecting pieces, the connecting points are arranged on the gravity blocks or the flexible cables, and the multiple unit group anchor structures are connected to form a net-shaped row body. The method has the beneficial effects that based on the bearing performance principle of a gravity anchor, the bearing performance is improved by utilizing the characteristics of group anchors, so that the problems that an anchoring foundation is difficult to install and the bearing performance is insufficient under the batholith condition are solved; the device is simple in structure, convenient to install and good in bearing performance, the problems that an anchoring foundation is difficult to install and insufficient in bearing capacity under the batholith condition are solved, and a better benthic ecological environment is created by conducting ecological design such as ecological artificial fishing reef appearance design and ecological substratum brushing on the gravity blocks.

The embodiment of the invention provides a test device, a wafer and a test method, the test device comprises a control circuit, M welding pad groups and N test unit groups, M and N are integers greater than 1, the number of test units included in each test unit group is less than or equal to M, and the total number of the test units is greater than M; and the control circuit is configured to receive a test signal, select one of the N test unit groups based on the test signal, and enable at least part of the M welding pad groups to be connected with the test units in the selected test unit group in a one-to-one correspondence manner.

The utility model belongs to the technical field of service life testing, and particularly relates to a reciprocating mechanism for testing a linear guide rail pair. The grooves matched with the guide rails are formed in the connecting blocks of the double-cylinder shafts, the guide rails are clamped and fixed in the grooves, external screws are tightened, then the connecting block on the other side and the guide rails are fixed, and due to the fact that the double-cylinder shafts and the fixing mechanism do reciprocating motion, the guide rails are very convenient to install; the number of the balancing rods is two, the two balancing rods are respectively fixed on the inner walls of the opposite fixing mechanisms, the fixing mechanisms on the two sides are provided with holes, the balancing rods are arranged in the holes, the balancing rods vibrate in the holes, the service life of the double-cylinder shaft is guaranteed, and meanwhile the influence of vibration on the guide rail pair testing unit group is small.

The present invention provides a display panel and a preparation therefor. The display panel at least includes a plurality of pixel unit groups, each of the pixel unit groups includes a plurality of pixel units, each of the pixel units includes a plurality of sub-pixels, and each of the sub-pixels has a functional layer. For the display panel provided by the present invention, the functional layers of multiple sub-pixels with a same color of the plurality of sub-pixels in each of the pixel unit groups are arranged in a first direction and connected with each other, which reduces precision requirements for ink output of each nozzle during an ink jet printing process and reduces a thickness difference of the functional layers of each column of the sub-pixels arranged in a printing direction, thereby effectively preventing generation of lateral Suji Mura during display of the display panel.

The invention provides a photoresist development simulation method, a computer readable storage medium and a computer program product.The photoresist development simulation method comprises the steps that a photoresist development model is divided into grids, and whether photoresist resin makes contact with a development solvent or not is judged according to the occupancy state of grid points of the grids, the method for determining the occupancy state of the lattice points of the grid comprises the following steps: constructing a sphere in a photoresist developing model, taking a unit group of photoresist resin as a sphere center of the sphere, and taking the sum of the Van der Waals radius of the unit group of the photoresist resin and the Van der Waals radius of a developing solvent as a radius of the sphere; and traversing the sphere, and if the lattice points are surrounded by the sphere, adding 1 to the occupancy state of the lattice points. According to the developing simulation method for judging whether the photoresist resin is in contact with the developing solvent or not through the Van der Waals radius of the photoresist resin and the Van der Waals radius of the developing solvent, the influence of the permeation behavior of the developing solvent in the photoresist resin on photoresist developing is accurately and effectively reflected; and the method has guiding significance for researching the influence of different resin structures on the photoresist developing result.

The utility model provides a multi-station variable-pitch boxing manipulator, and belongs to the technical field of automatic packaging equipment. The multi-station grabbing device comprises a material receiving frame, a linear guide mechanism is arranged on the material receiving frame, at least one multi-station grabbing unit set is arranged on the linear guide mechanism, each multi-station grabbing unit set comprises N grabbing units distributed in the linear direction of the linear guide mechanism, N is larger than or equal to 3, one grabbing unit is linearly fixed on the linear guide mechanism, and the other grabbing unit is linearly fixed on the linear guide mechanism. The other grabbing units are movably connected with the linear guide mechanism; every two adjacent grabbing units are connected with the two ends of the corresponding displacement pull rod correspondingly, and one grabbing unit and one end of the corresponding displacement pull rod move linearly in a limited mode. The two grabbing units located at the two ends of the N grabbing units are connected with the two ends of the linear driver correspondingly. A packaging box with a smaller size is allowed to be used, and the space utilization rate of a production line is increased; idle stroke can be eliminated, the takt efficiency is high, and the material boxing efficiency is greatly improved; and the device can adapt to materials with different dimensions.