90results about How to "Improve scaling efficiency" patented technology

The invention provides a system for controlling the position of a lifting hook of a crane. The control system comprises a length variation detecting unit and a lifting hook lifting control unit, wherein the length variation detecting unit comprises a length judging unit and/or a command judging device; the length judging unit is used for detecting the real-time length of a telescopic arm and judging whether the acquired real-time lengths of the telescopic arm are the same or not, and confirming the length variation of the telescopic arm when the acquired real-time lengths of the telescopic arm are not the same; the command judging device is used for detecting whether the driving device receives a corresponding driving command or not, and confirming the length variation of the telescopic arm when the driving device receives the corresponding driving command; and the lifting hook lifting control unit is used for controlling the lifting of the lifting hook when the length of the telescopic arm changes, so that the lifting hook is in a pre-set safe height range. According to the other side of the invention, the invention further provides a method for controlling the position of the lifting hook of the crane as well as the crane. According to the technical scheme of the invention, the lifting hook can be adjusted intelligently according to the length of the telescopic arm, so as to improve the operation efficiency and reduce potential safety hazard during expansion and contraction processes.

The invention discloses an FPGA-based image scaling processing method and device. The method comprises: original image data are obtained and the original image data are inputted into an FPGA internal cache at a preset inputting speed; the original image data are read from the internal cache at a reading speed corresponding to the preset inputting speed, interpolation calculation is carried out based on an interpolation algorithm and the read original image data to obtain image interpolation data; and according to the image interpolation data, image data after image scaling are obtained. The original image data are inputted into the FPGA internal cache for caching and thus no external storage device is needed for storage, so that costs can be lowered. Data can be read from the FPGA internal cache instead of being read from any external storage device, so that the data reading speed can be increased and the overall image scaling efficiency can be improved. In addition, the original image data are read from the internal cache at the reading speed corresponding to the preset inputting speed and thus data reading is carried out at a reasonable reading speed, so that the reading speed can be guaranteed and data loss caused by too slow reading speed can be avoided. Therefore, the scaling processing efficiency can be improved.

The invention discloses a 192 bit key expansion system and method based on an AES (Advanced Encryption Standard), which are used for mainly solving the problems of low efficiency and high power consumption of the traditional 192 bit AES encryption algorithm in a key expansion process. The method comprises the steps of: storing an initial key in a first turn of key expansion, taking the front four lines as turn keys of the turn of key expansion, carrying out word circulation, byte replacement and bitwise XOR operation; using results as the turn keys and storing the results in a local register and an external memory unit, reading by an encryption process; and finally, repeating the operation for the turn keys obtained in the former turn in each turn until all 12 turn keys are obtained, and ending the key expansion. The 192 bit secret key expansion system and method can be compatible with the instantaneity of the key expansion and the reusability of the turn keys, realize high-efficiency and low-consumption key expansion, and is suitable for a 192 bit key expansion process of the AES encryption algorithm.

The invention discloses a 128 bit secret key expansion system and a method based on an AES (Advanced Encryption Standard), which mainly solve the problems of low efficiency and high power consumption in a 128 bit secret key expansion process of an existing AES encryption algorithm. A realization process comprises the following steps of: storing an initial secret key at a first round of secret key expansion; using the stored initial secret key as a round secret key of the round; carrying out word circulation, byte substitution and bitwise XOR operation on the round secret key; storing the round secret key in a local register and an external storage unit simultaneously so as to be read by an encryption process; repeating the operation on the round secret key obtained through the former round; and finishing secret key expansion until 10 round secret keys are obtained. According to the 128 bit secret key expansion system and method based on the AES, the instantaneity of secret key expansion and the reusability of the round secret key can be ensured, the high efficiency and the low power consumption of secret key expansion are realized; and the system and the method can be applied to the 128 bit secret key expansion process of the AES encryption algorithm.

The invention relates to a cross-process communication method and device based on an Android platform. The method comprises the following steps: a first unified method in a first unified access layer of a first process makes response to a calling instruction of an arbitrary original cross-process method sent by a business layer to generate a cross-process calling request, and sends the cross-process calling request to a second process corresponding to a target original cross-process method requested for calling; a second unified method in a second unified access layer of the second process obtains an identifier and an entry parameter of the target original cross-process method according to the request; the second unified method determines the corresponding target original cross-process method according to the identifier and the entry parameter of the target original cross-process method, obtains called data according to the target original cross-process method, and returns the called data to the first unified method; and the first unified method returns the called data to the business layer, and related processing operations of the called data according to the first unified method. The scalability and the efficiency of the cross-process method are improved.

The invention discloses an MIMO (Multiple Input Multiple Output) signal detection method and a detector on the basis of a K-Best algorithm. The method comprises the following steps of: according to an antenna number and a modulation mode which are designated by a user, configuring a detection layer number; acquiring a product of an upper triangular matrix R of a channel transfer matrix H, which is subjected to QR decomposition, and a conjugate transpose matrix of a unitary matrix and a receiving vector y; expanding all constellation points on a p=Mth layer and PC (Fiber Channel) paths on a p=M-1th layer in parallel and generating two groups of candidate paths in an interweaving mode to carry out parallel processing; expanding the candidate paths in a parallel mode as required to find out K survivor paths and K-2 abandon paths on a pth layer; processing the survivor paths on each detection layer to obtain survivor path outputs and carrying out reusing processing on the abandon paths; and carrying out log-likelihood processing on the K survivor paths and the K-2 abandon paths. The invention can solve the problems of low throughput, poor flexibility, poor detection performance, difficulty in implementing a hardware structure and the like.

The invention discloses a management method of edge equipment and a related device, and is applied to the technical field of cloud. A meta-cluster deployed on a cloud platform is determined in response to a target instruction, the meta-cluster comprises a central control device and at least one associated hosting cluster, the central control device is used for issuing the target instruction to thehosting cluster, and at least one control component is configured in the hosting cluster; edge equipment to be deployed is acquired; and the edge device is associated with the control component so asto deploy an edge service corresponding to the target instruction at the edge device. Therefore, the process of quickly expanding and managing the edge equipment is achieved, and the edge equipment is managed through the control component in the hosting cluster, so that the meta-cluster framework on the upper layer does not need to be redeployed in the cluster expansion process, and the expansionefficiency of the edge equipment is improved.

An optical apparatus includes a light-quantity-adjusting unit, a first lens unit disposed closer to an object than the light-quantity-adjusting unit, a second lens unit disposed closer to an image plane than the light-quantity-adjusting unit, and a drive unit for driving the first lens unit and the second lens unit in an orthogonal-to-optical-axis direction.

The invention discloses a single cylinder synchronous expansion and contraction device with multiple sets of inhaul cables for a lorry-mounted crane. The device comprises a basic arm and a plurality of telescopic arms which are overlapped and sleeved in the basic arm; a telescopic oil cylinder of which the head is fixed on the tail of the basic arm and the barrel is fixed on a first section of the tail of the telescopic arm is arranged in each of the plurality of telescopic arms; the arm body of each telescopic arm is provided with a pulley, a telescopic arm cable, and a fixed plate; a rope row is arranged in each telescopic oil cylinder; and synchronous extending or contraction of multiple sections of the telescopic arms can be realized by the connection relationship of the parts, and the operation characteristics that the conventional arm can be only extended and contracted sequentially are changed to ensure that the multiple sections of the telescopic arm bodies are extended and contracted synchronously along with the extension and contraction of the inbuilt telescopic cylinders, so that the extension and contraction speed of the arm bodies and the efficiency of the lifting operation are improved greatly. The single cylinder synchronous expansion and contraction device with the multiple sets of inhaul cables for the lorry-mounted crane has a compact structure, the mode of winding steel wire ropes is skilful, the space in the arm body is fully utilized, and the problems that the conventional five-section telescopic arm expansion and contraction system for the lorry-mounted crane is implemented by arranging two inbuilt telescopic oil cylinders are solved.

The invention discloses an electrode preparation method for improving the current expansion and luminous efficiency of a GaAs-based light-emitting diode, and the method comprises the steps: preparing a patterned recessed region on a GaAs-based epitaxial wafer through photoresist coating and plasma etching, and removing photoresist; depositing an ITO film on the GaAs-based epitaxial wafer, and carrying out the thermal annealing of the ITO film; carrying out sequential vapor plating of a plurality of metal film layers on the ITO film through photoresist coating and electron-beam evaporation, and forming a pattern electrode, wherein the pattern electrode comprises a pasting layer, a reflection layer, a blocking layer, and a welding layer; removing the metal films in a region outside the pattern electrode through employing a peeling method, and completing the preparation of a P electrode of the GaAs-based light-emitting diode; removing the residual photoresist; thinning a GaAs-based substrate of the GaAs-based epitaxial wafer, carrying out the vapor plating of one metal film layer on the surface of the GaAs-based substrate, and completing the preparation of the N electrode of the GaAs-based light-emitting diode. The method improves the current expansion of the GaAs-based light-emitting diode through employing the ITO film.

The invention discloses an expansion system and a method for 256-bit keys based on an advanced encryption standard (AES), and mainly solves the problems of low efficiency and high power consumption in a key expansion process in the existing 256-bit AES. The process includes storing an initial key in the first round of key expansion, taking the first four rows as a round key of the key expansion in the first round, and performing word cycle, byte replacement, and bitwise XOR operations; executing a new byte replacement and a secondary bitwise XOR operation according to serial number n; taking results of the two bitwise XOR operations as a round key and storing in a local register and an external storage cell for the usage of encryption process reading; and repeating the operations for round keys obtained in a former round in following rounds until 14 round keys are obtained, and finishing key expansion. According to the expansion system and the method for the 256-bit keys, instantaneity of key expansion and reusability of round keys are achieved simultaneously, key expansion with high efficiency and low power consumption is achieved, and the expansion system and the method are suitable for key expansion processes of the 256-bit AES.

The invention relates to a support vector machine based dedicated network flow classification method. The support vector machine based dedicated network flow classification method comprises the steps of grabbing independent network packets from a network and distinguishing the network packets into independent streams according to features; performing feature extraction on each stream, and describing each stream by adopting a vector form; after classifying each type of the stream, generating a sample set, then performing a support vector machine algorithm based on the sample set, classifying the samples, mapping vectors to a high dimension by adopting a radial basis function so as to realize binary classification of the samples by the support vector machine, and extending from the dichotomy to multi-class classification by using a 1-to-N extension method. The support vector machine based dedicated network flow classification method solves the problems that a dedicated network is connectionless-protocol-oriented, the current flow classification algorithm is low in adaptability and the multi-class extension is big in calculation quantity and low in accuracy, and has a very good popularization and application foreground.

The invention discloses a multifunctional six-degree-of-freedom rotating device which is a motion platform system of a dynamic racing car game driving simulator based on a Stewart platform; the multifunctional six-degree-of-freedom rotating device comprises a mechanical system, a hydraulic system and a control system. The mechanical system comprises a panel, a supporting plate, a cushion block, aspherical hinge, a spherical hinge base and a platform. The hydraulic system comprises a cylinder barrel, front and rear end covers, a piston rod, a pull rod, an oil pipe and an oil pipe seat. According to the control system, a control part is designed and programmed through Visual Basic 6.0 by means of a PLC. The Steward dynamic platform system comprises an upper platform, a lower platform and six supporting rods which are connected in parallel and can stretch out and draw back independently and freely; the lower platform is fixed on a foundation, the telescopic rods are connected with the platforms through spherical hinges, and six-degree-of-freedom motion of an upper movable platform in a three-dimensional space, namely translational motion of an X axis, a Y axis and a Z axis and rotational motion around the X axis, the Y axis and the Z axis, can be completed by means of telescopic motion of six piston rod pieces, so that various spatial motion states are simulated. The hydraulic cylinder is adopted to replace a common electric push rod on the market, and the telescopic efficiency of the piston rod is greatly improved.

The invention discloses a database extension method and device for a low-code development platform, and the method comprises the steps: constructing an extension SQL statement description file based on a first operation of a user, and storing the extension SQL statement description file, wherein the extended SQL statement description file is used for representing an acquisition method of an extended database SQL statement; acquiring a general SQL statement description file preset by the low-code development platform, wherein the general SQL statement description file is used for representing a general database SQL statement acquisition method; inheriting the general SQL statement description file by the extended SQL statement description file, and copying a corresponding acquisition method in the general SQL statement description file; according to the constructed extended SQL statement description file, generating a corresponding first configuration file and storing the first configuration file; determining a first association relationship between the first configuration file and the extended SQL statement description file, and storing the first association relationship to realize the extension of the database of the low-code development platform.

The invention discloses a network construction method and device, device processing and access methods, and a network device. The network construction method comprises: responding to a configuration file obtaining request of at least one gateway device and sending a pre-stored configuration file to each gateway device so as to enable each gateway device to generate a corresponding sub network based on the configuration file; and acquiring all to-be-access terminal devices in the coverage range of each sub network and distributing a unique terminal device identification code for each to-be-access terminal device. Therefore, the network construction and network expansion processes are simplified; the the efficiency of network construction and expansion is increased; and the robustness of network operation is enhanced.

The invention provides a database extension method and device based on artificial intelligence, electronic equipment and a storage medium, the database extension method based on artificial intelligence comprises the following steps: recording a starting moment of database extension, and calibrating the starting moment according to a default time zone of an original database to obtain a calibrated moment; the original database comprises a plurality of data blocks, and reading an archiving strategy of the original database to obtain the archiving progress of the data blocks; performing binary classification on the data block according to the calibrated moment and the filing progress to obtain an offline data block and an online data block; migrating the offline data block to a preset copy database; and querying the time range of data storage of the online data blocks, and sequentially writing the online data blocks into the copy database according to the time range from morning to evening. According to the method, the time sequence copy can be expanded without stopping the operation of the time sequence database, so that the copy expansion efficiency can be improved.

The invention provides a data operating method, a device, equipment and a storage medium. The method comprises the following steps: obtaining a first data operation instruction, according to the dataattribute of the to-be-operated data included in the first data operation instruction, the to-be-operated data is acquired; determining a database corresponding thereto, if the data attribute indicates that the to-be-operated data is the data of the non-extensible field; if so, determining that the corresponding database is a relational database; If the data attribute indicates that the to-be-operated data is the data of the extensible field, determining that the database corresponding to the to-be-operated data is a non-relational database, and executing corresponding operation on the to-be-operated data in the determined database according to an operation mode included in the first data operation instruction, thereby finishing a data operation process. Compared with the prior art, the main body data which do not need to be expanded and are stored in the relational database is reserved, Meanwhile, the objects which need field expansion and are stored in the non-relational database areadded, so that field expansion can be realized in the data operation process, and the field expansion efficiency is improved.

The invention provides an expanding method and device of a substrate management controller and electronic equipment. When a user needs a customized function, namely a target function, a target program code file for achieving the target function can be created in advance, in this way, when a control instruction which is used for achieving the target function and is generated by the substrate management controller is detected, target calling information of the target function is obtained, therefore the already created target program code file is called through the target calling information and is executed, and the target function can be simply achieved. As can be seen, the expansion of the user customized function is achieved on the already existing substrate management controller, a new substrate management controller does not need to be developed, the substrate management controller is verified, the expanding efficiency of the substrate management controller is improved, and therefore the delivery time of the corresponding electronic equipment is shortened.

The invention relates to a whiteboard canvas size and position roaming control method capable of improving processing efficiency. The method comprises the following steps: setting a canvas roaming switch in whiteboard software, after the switch is turned on, identifying a finger instruction by a canvas on a white board, and performing corresponding functions of zooming in and zooming out and the like; and selecting the width of a paintbrush, performing drawing operation on the whiteboard, and for each handwriting point generated by the paintbrush, extracting the handwriting points, and settingfive parameters. According to the zoom algorithm, the zoom-out index and the zoom-in index are controlled, CPU and memory resource consumption is reduced, meanwhile, the canvas space can be used infinitely through the function, limitation of the number of content in the canvas is avoided, and white board roaming is achieved.

The invention relates to an efficient single-cylinder bolt multistage sequential extension path optimization method, and belongs to a single-cylinder bolt multistage sequential extension path optimization method. Shrinkage arm limit state sets are obtained through calculation of a needed maximum travel and a needed minimum travel and judgment of an operation flow; the step sequence enumeration is performed for all the obtained shrinkage arm limit state sets according to a sequential extension principle; and the optimal shrinkage arm limit state set needs the fewest step sequences. The method is a general and universal algorithm, and is suitable for n sections of extension arms; each section of arm is provided with m bolt positions; the algorithm is clear in logic and expression, is high in integration level, creates an own system, can search the optimal depth solution, and has the evaluation criterion on the optimal solution; and generally, the optimization strength reaches above 10%.

The invention provides an image zooming processing method and device, equipment, a computer readable storage medium and a computer program product. The method comprises the following steps: updating a first grayscale image of a to-be-processed image based on an edge detection operator to obtain a second grayscale image; determining an energy value of each pixel point in the second grayscale image; according to the energy value of each pixel point in the second grayscale image, determining an energy ray matched with the scaling processing direction in the to-be-processed image, wherein the sum of energy of a plurality of pixel points included in the energy ray meets an energy condition; and performing fusion processing on a plurality of pixel points associated with the energy rays in the to-be-processed image to obtain a scaled image. Through the invention, the image can be adaptively and accurately zoomed, and the method and the device can be applied to scenes such as cloud technology, artificial intelligence, intelligent traffic and auxiliary driving.