136results about How to "Solve complex technical problems" patented technology

The embodiment of the invention discloses a MySQL based SQL parser and a parsing method thereof.The technical problem that existing lexical and syntactic analysis tools do not support unique SQL statements of MySQL and cannot achieve the function of expanding the MySQL through annotations and accordingly the complexity of the data analysis process is caused is solved.The MySQL based SQL parser comprises a lexical analyzer, a syntactic analyzer and a syntactic tree analyzer, wherein the lexical analyzer conducts MySQL language lexical analysis on acquired character streams, outputs token flows corresponding to MySQL languages to the syntactic analyzer for syntactic segment analysis corresponding to the MySQL languages and outputs syntactic trees corresponding to syntactic segments to the syntactic tree analyzer for analysis.

The present invention discloses a processing method of interactive information, a device and a system. The method comprises the following steps that: a third-party authorization terminal is started to receive an authorization request provided by a data request terminal, the third-party authorization terminal generates an authorization information update command according to the authorization request, and the third-party authorization terminal updates the authorization information stored in a processing server to be that the data request terminal has an authorization request processing authorization according to the update command such that the data request terminal obtains a data request result corresponding to the data request information. According to the processing method, the device and the system, the technical problem of the complex process of the data processing request provided by an Internet terminal in the customized information prior art is solved.

The invention relates to a preparation method for high-purity boric acid and nuclear-grade high-purity boric acid, and belongs to the fine chemical engineering technology field. The method comprises the following technological steps: first, industrial boric acid is stirred with water, impurities of calcium, magnesium and sodium are removed, and high-purity boric acid precursors are obtained after solid-liquid separation; second, the high-purity boric acid precursors are dissolved in hot pure water and a boric acid solution containing H3BO3 with a concentration of 180g/L-280g/L is prepared, iron and heavy metal are subjected to depth removal by utilization of composite additives, then filtration, cooling crystallization, solid-liquid separation, washing and drying are carried out, and the high-purity boric acid product is obtained. The high-purity boric acid product is dissolved in pure water, recrystallization is carried out for 1-2 times, dehydration and drying are carried out, and the nuclear-grade high-purity boric acid product is obtained. Through the preparation method, the high-purity boric acid products with different grades can be obtained, and the preparation method is advantaged by simple technology, easy operation and control, good reappearance, low production cost, and environmental protection.

The invention relates to a cable accessory in the field of a power cable transmission system, in particular to an integral prefabricated joint for a power cable with 500kV and over 500kV. The integral prefabricated joint for the power cable with 500kV and over 500kV comprises an integral prefabricated insulator (1), a sealant (2), a metal protection cover (3) and a conductor connecting piece (4);the integral prefabricated insulator (1) is arranged outside the conductor connecting piece (4); the sealant (2) is arranged outside the integral prefabricated insulator (1); the metal protection cover (3) is arranged outside the sealant (2); the integral prefabricated insulator (1) comprises a stress cone (1-1), a shielding tube (1-2), an insulator (1-3) and an outer shield (1-4); and the integral prefabricated insulator (1) is made from liquid silicon rubber. The integral prefabricated joint has the advantages of stable and reliable performance, high yield, low integrated cost, simple manufacturing process, low manufacturing cost, and good product quality.

The invention discloses a method for measuring concentration of germanium or/and tin impurity in crystalline silicon, which comprises the following steps of: doping boron or phosphorus into a germanium or/and tin mother alloy; and determining the concentration of germanium or/and tin by measuring the resistivity of a silicon chip. According to the invention, the phosphorus or boron is doped into the germanium tin mother alloy, the relationship between the resistivity of mother alloy and the concentration of germanium tin impurity is established, and the concentration of the germanium tin impurity can be determined by measuring the resistivity of the mother alloy; and the method is simple and convenient to operate, solves the difficulty in detecting the concentration of current germanium tin mother alloy, reduces the production cost and improves the production efficiency.

The invention discloses a classification method and electronic equipment. The method comprises: determining one or more nodes in a network; acquiring communication information between any two nodes in the one or more nodes; constructing a connection graph corresponding to the one or more nodes based on the communication information between the any two nodes; determining the similarity between any two nodes in the one or more nodes based on the connection graph and the communication information between the any two nodes, and determining a similarity matrix; and performing spectral clustering on the similarity matrix by use of a spectral clustering algorithm to obtain a clustering result. The method provided by the invention can solve a technical problem of a complicated traffic classification method in the prior art.

The invention relates to the technical field of flat wire motor manufacturing, and provides a multi-layer head twisting device and a head twisting machine. The multi-layer head twisting device comprises a flat wire head twisting mechanism and a head twisting driving mechanism, the flat wire head twisting mechanism comprises a supporting shaft, head twisting wire coils, an adapter sleeve and a transmission rotating disc, and the multiple head twisting wire coils are sequentially and rotatably arranged at the top of the supporting shaft in a sleeving mode in the radial direction of the supporting shaft; the multiple adapter sleeves are sequentially and rotatably arranged in the middle of the supporting shaft in a sleeving mode in the radial direction of the supporting shaft, the multiple transmission rotary discs are sequentially and rotatably connected with the supporting shaft in a sleeving mode from bottom to top, and the torsion head driving mechanism comprises a supporting base, a first rotation driving piece and a lifting driving piece. The multiple first rotary driving pieces are sequentially installed on the supporting base in the circumferential direction of the flat wire twisting mechanism. The multi-layer head twisting device is reasonable in layout, small in occupied space and compact in structure, the technical problem that an existing head twisting device is complex in structure is solved, and therefore the size of the multi-layer head twisting device is reduced, and installation and maintenance of the multi-layer head twisting device are facilitated.

The invention discloses a data processing method and apparatus. The method comprises the steps of performing analysis operation on a JSON data structure to obtain a form page, wherein the JSON data structure is used for setting interface information; receiving configuration data through the form page, wherein the configuration data and the interface information have a correlation relationship; and storing the configuration data and the interface information in a memory object cache system, wherein the configuration data and the interface information are stored according to the correlation relationship. The technical problem of a complex process of storing running data is solved.

The invention discloses a data processing method, device and system in a distributed storage system. The method comprises the steps that a data reading request is generated, and parameters of the datareading request carry offset and length of read data; according to the data reading request, metadata of the file are obtained from a cache of an output stream of the file in the distributed storagesystem, and the metadata of the file at least comprise the current length of the file; and reading data from the file according to the obtained current length of the file. The technical problem that the complexity of a user program process is increased due to the fact that a user needs to process an event of reading the end of a file and reopen the file to obtain an input stream is solved.

The embodiment of the invention provides a database log synchronization method and device, computer equipment and a readable storage medium. The method comprises the steps of simulating a slave node of a MySQL through a pseudo slave node synchronization service, and extracting a binlog from the MySQL; storing the extracted binlog in a storage module of a processing engine through the pseudo slavenode synchronization service; and reading the binlog log from the storage module through an analysis service, analyzing the binlog log, and storing an analysis result into the target storage. According to the scheme, the whole binlog synchronization process of the MySQL can be completed in the processing engine through a program; extra components such as a third-party synchronization tool, a message queue or JMQ are prevented from being introduced, and meanwhile, multi-party component cooperation can be avoided in the binlog synchronization process of the MySQL; and the processing flow can besimplified.

The invention relates to a preparation method for nuclear-grade high-purity boric acid, which belongs to the technical field of fine chemical engineering. The method comprises the following process steps: 1) leaching an ascharite raw material with water so as to remove water-soluble impurities sodium and potassium, thereby obtaining low-sodium ascharite with Na2O content of less than 0.6%; 2) further leaching the low-sodium ascharite with sulfuric acid or hydrochloric acid, adding a composite additive for in-depth iron removal and carrying out filtration and cooling crystallization so as to obtain low-iron low-sodium boric acid; and 3) dissolving low-iron low-sodium boric acid in pure water and carrying out recrystallization twice to three times so as to obtain a nuclear-grade high-purity boric acid product. The method provided by the invention can prepare the nuclear-grade high-purity boric acid with ascharite as the raw material and has the advantages of simple process, easy operation and control, good reproducibility, no addition of organic reagents during preparation, low production cost and environment friendliness.

The invention discloses a method for determining a q-axis current compensation value of a permanent magnet synchronous motor and a pulsation suppression method. The method comprises the following steps: synchronously acquiring a q-axis current feedback signal iq and a rotor position signal theta m, determining a position interval of a rotor based on the theta m, accumulating the interval times by1 and performing synchronous averaging on the iq, and repeatedly acquiring until the accumulated value of the interval times is greater than a threshold value and all the intervals are not overlappedto form a circle of the rotor; performing fast Fourier transform on the synchronous average value corresponding to each interval arranged in sequence to obtain frequency domain characteristic information, determining the amplitude and the phase angle of a to-be-compensated spatial frequency component from the frequency characteristic information, and constructing a q-axis current compensation function; and obtaining a q-axis current compensation value based on the position of the actual compensation moment of the motor rotor and the current compensation function. Time domain information is converted into a space domain, time lag is avoided, the whole process does not affect the dynamic performance of the system, extra devices are not needed, structures and parameters of all control links do not need to be adjusted, and operation is easy.

The invention discloses a router login method and device. The method comprises the steps of receiving a login request for logging in to a router, wherein the login request comprises account information of a browser; searching the prestored login information for target login information matched with the account information, wherein the prestored login information comprises an incidence relation between the account information of the browser and the target login information; logging into the router according to the target login information. The router login method and device solves the technical problem that existing router login modes are complex.

The present invention provides a terminal screen display switching method and apparatus. The method comprises: acquiring a fingerprint of a user who currently performs an operation on a terminal; determining whether the acquired fingerprint is a left-hand fingerprint or a right-hand fingerprint; when the fingerprint is the left-hand fingerprint, switching screen display of the terminal into a single left-hand operating mode; and when the fingerprint is the right-hand fingerprint, switching screen display of the terminal into a single right-hand operating mode. The method and apparatus provided by the present invention solve the technical problem that switching to a single-hand operating mode is excessively complex in the prior art, and achieves the technical effect of simply and effectively switching to the single-hand operating mode.

The invention discloses a password initializing method and an electronic device. The method is applied to the electronic device which comprises a basic input output system. The method includes that when the electronic device is started at a first moment and a first set operation is detected, the first set operation is responded to, a first starting parameter and a server address are set in the basic input output system, and thereby, when the electronic device is started at a second moment after the first moment, a first instruction is generated; the first instruction is executed, an universally unique identifier (UUID) of the electronic device is sent to a server which corresponds to the server address on the basis of the server address, and therefore, the server can send a first initialized password to the electronic device on the basis of the UUID; the first initialized password is received, and the first initialized password is written in the basic input output system.

The invention discloses a function calling method for simplifying an operation process. The function calling method comprises the following steps of: detecting whether an operation body exists in a preset area of the environment of electronic equipment; when the operation body exists, acquiring first image information including the operation body; detecting a first operation of the operation body towards a first operation direction; responding to the first operation, and according to a first model corresponding to the first image information, determining and calling a first function corresponding to the first operation direction, wherein the first model is used for representing the corresponding relation between the operation direction and the function. The invention also discloses the electronic equipment for realizing the method.

The invention provides an air conditioner control method and device applied to a terminal device. The air conditioner control method applied to the terminal device comprises the steps that operation parameters of controlled air conditioners are obtained; according to the operation parameters, control instructions are generated; and the control instructions are sent to drive units in indoor units of the air conditioners and/or drive units in outdoor units of the air conditioners, wherein the drive units control the air conditioners according to the control instructions. The air conditioner control method and device applied to the terminal device solve the technical problem that an existing air conditioner control main board is too complicated and achieve the technical effect of lowering the complexity of the air conditioner main board.