288results about How to "Avoid magnification" patented technology

Provided is a fault identification and protection method of an electrified railway AT traction network. When network voltage is lower than a specified value, labeling no-load trend symbol values of the near ends and the far ends of a touch net T and a negative feeder F in each self-coupling segment with 0, labeling influent trend symbol values with 1, labeling effluent trend symbol values with -1, if an absolute value of a sum of the trend symbol values of two ends of the touch net T in each self-coupling segment is larger than or equal to 1, or a failure absolute value of a sum of the trend symbol values of two ends of the negative feeder F is larger than or equal to 1, or a failure absolute value of a sum of the trend symbol values of two ends of a touch net T branch and a negative feeder F branch is larger than or equal to 1, respectively judging the touch net T to be in short circuit failure to the ground, or the negative feeder F to be in short circuit failure to the ground, or the touch net T to be in short circuit failure to the negative feeder F, and breaking off all breakers at two ends of each self-coupling segment. Short-circuit reactance calculated according to corresponding voltage and short-circuit current at two ends of each self-coupling segment and the corresponding length of the self-coupling segment determine failure positions.

The invention discloses a device for measuring a positioning parameter of a wheel in a vehicle chassis system KC test bench. The device comprises a support apparatus disposed on a vertical loading table of the KC test bench, a six-freedom-degree parallel mechanism platform, and a rotating disc connected with the wheel. The wheel is fixedly connected with the rotating disc, and the rotating disc is fixed with one end of a moving platform of the six-freedom-degree parallel mechanism platform. One end of a fixed platform of the six-freedom-degree parallel mechanism platform is fixedly connected with the support apparatus. Six branch chains are disposed between the moving and fixed platforms of the six-freedom-degree parallel mechanism platform. Each branch chain is a flexible branch chain with a plurality of freedom degrees, and is provided with a displacement sensor which is used for measuring the displacement change of the corresponding branch chain so as to calculate the spatial attitude of the wheel. The positioning parameter of a tyre can be obtained through the displacement changes and measurement value of a displacement sensor of a KC test bench loading system. The invention also discloses the vehicle chassis system KC test bench equipped with the above device. The device can accurately obtain the positioning parameter of a KC test tyre through the principle of parallel mechanism measurement, is smaller in error, and is convenient to install.

The invention relates to an extracting device for producing hydrogen peroxide by anthraquinone process and a method thereof; the device consists of a clarifying section 1, a filling section 2 and a settling section 3; the clarifying section 1, the filling section 2 and the settling section 3 are arranged sequentially from top to bottom; a heavy-phase distributor 11, a light-phase anti-backmixing filler 12 and a light-phase outlet 13 are arranged in the clarifying section 1; a gas distributor 8, a heavy-phase anti-backmixing filler 9, a light-phase distributor 10 and a heavy-phase outlet 7 are arranged in the settling section 3; the filling section 2 is internally composed of a plurality of packing boxes; the packing boxes are more than two plate-net ripple packing pieces and are interlaced mutually in 15-90 DEG along the direction of the ripple channel of two adjacent plate-net ripple pieces to overlap; the direction of the ripple channel of the plate-net ripple packing forms 15-75 DEG with the direction of the centre line of a packing extracting tower in vertical surface; the diameter of the packing box is less than the inner diameter of the tower of the filling section by 2-20mm; the height of the packing box is 50-300mm. the extracting device can intensify the transport process and improve extracting efficiency so as to reduce the height of transfer unit and save device investment.

The embodiment of the invention discloses a method and a device for searching people with the same name. The method comprises the following steps of: retrieving an input target person name, and thus obtaining relevant documents which contain the target person name; respectively extracting people relation characteristic information in each relevant document, counting the people relation characteristic information in each relevant document, establishing a people relation graph, and calculating the relation strength of the target person name and other people names in the people relation graph; establishing a people relation characteristic vector for each relevant document according to person name which is contained in each relevant document and the relation strength; and according to the people relation characteristic vector, clustering all relevant documents to obtain a people relation clustering result, so a searching result is at least given according to the people relation clustering result. By the invention, the clustering accuracy of the people with the same name can be improved, so the quality of the searching result is improved, and the performance of a searching engine is improved.

The invention discloses an automatic gain control method for audio frequency, which presets the initial gain value. The method comprises: check whether the present frame input signal is mute frame signal; if it is a mute frame signal, directly output the present frame input signal; otherwise, process the present frame input signal in an amplification gain device and then output it. Besides, the invention also discloses an automatic gain control device for audio signal. The method and device disclosed in the invention, which do not amplify the background noise and do not produce signal distortion, are able to realize the automatic control of output power in hearing aid under the condition of ensuring the speech resolution ability.

The invention discloses a correcting system and method of a sunlight reflecting device based on an artificial light source. The correcting system comprises a correcting vehicle capable of freely advancing, a laser emitting device installed on the correcting vehicle, a gesture locating system of the laser emitting device, a light-sensitive array receiving screen used for receiving rays reflected by the sunlight reflecting device, a gesture locating system of the light-sensitive array receiving screen, a laser emitting device supporting mechanism, a receiving screen supporting mechanism, a distance measuring and locating system and a data processing system. According to the invention, defects such as high cost, time spending, complexity in image processing, difficulty in searching light spots and the like of a sunlight combined solar light spot imaging correcting scheme are overcome, problems of high cost and searching of the correcting system such as a high-power tower-type artificial light source are solved, and the correction of the sunlight reflecting device is realized by using a method with low power, low cost and high precision.

The invention relates to a brushing machine of thin plastic pipe, belonging to the brushing mechanical technology field, for solving problems of low brushing efficiency in handwork, heavy labor intensity and no assurance for brushing quality. The invention comprises manipulator, clamping device and worktable. The manipulator can simulate human hand to dip lacquer, lift, brush and draw back. It can accomplish the brush of paint layer on the surface of thin plastic pipe mechanically and automatically. By adding intermittent rotator, the manipulator and the clamping device can be allocated according to the brushing work station to form the intermittent automatic brushing machine with multiple work stations. The brush to multiple thin and long plastic pipes with multiple purposes can be accomplished. It is provided with regular brushing work, even brushing layer, good brushing quality and high efficiency. It can be used as brushing equipments for thin plastic pipe, maw pipe and so on.

The invention relates to a liquid crystal display screen thinning pretreatment liquid, which comprises, by weight, 5-20% of silanol, 0.1-5% of an inorganic silicate, 0.01-1% of an alkali activator, and the balance of water, wherein the alkali activator is at least one selected from a metal hydroxide and a strong base weak acid salt. According to the present invention, the liquid crystal display screen thinning pretreatment liquid is filled in micro cracks on the surface of glass, and is combined with silicon-oxygen bonds on the surface of glass; and before a glass substrate is subjected to chemical thinning in a HF solution, the chemical substrate is soaked in the liquid crystal display screen thinning pretreatment liquid containing 5-20% by weight of silanol, 0.1-5% by weight of an inorganic silicate and 0.01-1% by weight of an alkali activator, such that enlargement of cracks on the glass substrate in the HF solution during the chemical thinning process is prevented so as to increase a liquid crystal display screen yield. In addition, the present invention further provides a liquid crystal display screen thinning method.

The invention relates to a control device of an electric system static var compensator (SVC), in particular to a double SVC coordination control device. The control device comprises a measuring unit, a voltage adjustor, a distributing unit, a synchronizing system, a protecting unit, an on-off input unit, an on-off output unit and a valve base electronic unit; the measuring unit is respectively connected with the voltage adjustor and the protecting unit, the voltage adjustor is connected with the distributing unit, the protecting unit is respectively connected with the distributing unit and the on-off output unit, the distributing unit is respectively connected with the on-off input unit, the on-off output unit and the valve base electronic unit, and the valve base electronic unit is connected with the synchronizing system and a thyristor control reactor (TCR). Double SVC coordination control is achieved by the adoption of one control system, TCR coordination control and gain optimization under two main transformers in the same transformer substation are achieved, and circulating switching and capacitive reactance interlocking logic of multi-group parallel-connection capacitive circuit branches or sensitive circuit branches under all sections of buses are achieved.

The invention discloses an active power filter (APF) and thyristor switched filter (TSF) hybrid compensation device for an electric rig, which comprises a passive part, an active part, an electric quantity data acquisition module of a well site and the compensation device, a control module of a TST, and a control module of an APF. The filtering characteristics of the TSF are improved by utilizing the APF, so that when the TSF works in a combined manner, 2 to 10 times of harmonic currents injected into a power supply system of the well site are controlled within a given value, and the harmonic currents of the well site are prevented from being amplified when different filtering branches of the TSF are switched in a combined manner; and by adopting the structure that the APF is connected in parallel with a fundamental resonance module of a fifth filtering branch of the TSF through a coupling transformer, the capacity of the APF is very small, so that the APF is beneficially controlled, the cost of the whole set of device is reduced, the problem of overlarge harmonic currents occurring when the TSF is switched in a combined manner is effectively solved, and then the tasks of reactive compensation and harmonic elimination of the well site can be completed more safely and more effectively.

The invention discloses an automatic gain control method and a device for audio data. The method comprises steps: framing processing is carried out on audio data, and feature parameters of each frame of data are extracted; according to the feature parameters of the current frame of data and a voice category Gaussian mixture model, the voice category condition probability of the current frame of data is obtained; according to the feature parameters of the current frame of data and a noise category Gaussian mixture model, the noise category condition probability of the current frame of data is obtained, and the possibility of the current frame of data belonging to a voice frame and the possibility of belonging to a noise frame are calculated; when the possibility of belonging to the voice frame is larger than that belonging to the noise frame, the current frame of audio data is judged to be the voice frame, and the gain is controlled according to a voice frame gain control rule; or otherwise, the current frame of data is judged to be the noise frame, and the gain is controlled according to a noise frame gain control rule. The technical scheme of the invention greatly improves the voice recognition level and the noise recognition level, automatic gain control is thus carried out, and the experience of a user can be improved effectively.

The invention relates to an encryption and decryption technology and discloses a method for user identity authentication, which is used for improving safety of a digital signature procedure. The method comprises the following steps: redesigning the whole digital signature process, cancelling originally unreliable links for the user identity authentication at a client-side, and safely retruding the identity authentication process to a server side for accomplishment. The server side can effectively monitor the network environment and timely perceives network attack, thus the effective solutionsfor resisting the network attack can be rapidly adopted and the expansion of the network attack can be avoided, thereby improving the safety of an electronic service system and ensuring the service quality of the electronic service system. The invention also discloses a client-side and a server for the user identity authentication.

The invention relates to an intelligent network management system and method used for monitoring states and dispatching for instruments. The system is used for monitoring the instrument states and intelligent dispatching for the instruments. A distributed network is composed of the instruments using internet accesses of the instruments, a multi-function control is conducted, an SCPI (Standard Command for Programmable Instrument) even can be sent, and function extension is conducted on the instruments. According to the scheme, the management efficiency of the instruments is greatly improved, the management cost is lowered, and the instruments are used reasonably and effectively.

The invention discloses a method for reducing scratches on the surface of an epitaxial wafer. The method comprises the following steps of (1) putting a silicon carbide substrate on a graphite substrate in a reaction chamber of a silicon carbide epitaxial system; (2) replacing a gas in the reaction chamber with argon for multiple times, and then introducing hydrogen into the reaction chamber, gradually increasing the flow of the hydrogen to 20-40L / min, setting the pressure of the reaction chamber to be 700-1,000mbar and gradually heating the reaction chamber to 1400-1500 DEG C; and (3) after reacting a set temperature, keeping all parameters invariable and carrying out in-situ hydrogen etching treatment on the silicon carbide substrate for 10-60 minutes. According to the method disclosed by the invention, the substrate is treated by adopting low-speed hydrogen etching which tends to be isotropic under the conditions of a relatively low temperature, high pressure of the reaction chamber and low-flow hydrogen, so that the scratches on the surface of the substrate can be effectively reduced and weakened, other epitaxial defects derived from the scratches in an epitaxial layer are reduced, the method is compatible with an existing epitaxy process and core process parameters do not need to be modified.

The invention discloses a method for contactlessly breaking polycrystalline silicon, and more specifically discloses a method for breaking polycrystalline silicon by using laser technology. According to the method for contactlessly breaking polycrystalline silicon, at least one laser beam is irradiated to a polycrystalline silicon rod or polycrystalline silicon ingot; and once local area on the surface of or in the polycrystalline silicon rod or polycrystalline silicon ingot absorbs laser energy, the local area of the polycrystalline silicon rod or polycrystalline silicon ingot is heated instantaneously. The heated local area of the polycrystalline silicon rod or polycrystalline silicon ingot expands; and thermal expansion stress is generated on the surface of or in the polycrystalline silicon rod or polycrystalline silicon ingot, so that the polycrystalline silicon rod or polycrystalline silicon ingot is broken.

The invention discloses a control method for frequency regulation of an electric power isolated network system. The control method is characterized by comprising the following steps of step 1, setting the permanent rotating-speed difference coefficient bp, PID parameters, frequency modulation dead zone 0.05Hz, and a frequency range from minus and plus 0.05Hz to minus and plus <theta>Hz for retrieving a frequency modulation module according to power grid requirements, wherein <theta> is a positive number greater than 0.05; step 2, detecting the current unit frequency by a speed regulator; step 3, obtaining a difference value <delta>f between the current unit frequency and a rated frequency 50Hz; and step 4, performing regulation according to the numerical value range of the frequency difference <delta>f. By adoption of the method, the problems of high frequency control error, low precision and instability of the electric power system, particularly the isolated network system can be solved; therefore, accurate and stable control of the power grid frequency is realized; the electric energy quality of the power system is ensured; power grid accident extension is prevented; and rapid recovery of the power grid in faults can be realized.

The invention discloses a high-speed parallel manipulator with six degrees of freedom. The high-speed parallel manipulator comprises a fixed rack, a movable platform and six branch chains with the same structures, wherein the fixed rack is provided with six driving devices; each branch chain consists of a near rack rod, an upper connecting shaft, two mutually-parallel far rack rods with equal length and a lower connecting shaft; the output ends of all the driving devices in the branch chains are respectively and fixedly connected with one end of one near rack rod and used for providing one degree of freedom for the corresponding near rack rod; the movable platform comprises an upper platform and a lower platform which are horizontally arranged and are mutually parallel; the upper platform and the lower platform are connected by virtue of a rotating mechanism with a screw rod; the six branch chains are classified into two groups of branch chains at sequential intervals, and the two groups of branch chains are used for respectively driving the upper platform and the lower platform; upper three-dimensional relative movement and lower three-dimensional relative movement are converted into three rotation movements of the screw rod by virtue of the rotating mechanism. The high-speed parallel manipulator is compact in structure, can be used for omitting an amplification mechanism, reducing the complexity of the mechanism, meanwhile reducing the quality of moving parts and improving the movement precision, and is easy for realization of complex picking and placing operations.

The invention provides an intelligent early warning system for monitoring device leakage, capable of achieving rapid early warning processing of automatic identification and alarm information sendingof the system after liquid leakage of the device occurs at night and under severe weather conditions. The intelligent early warning system comprises a video acquisition module, a video image enhancement module, a data labeling module, a model construction module, a model learning module, a data verification module and a leakage early warning module. The video image enhancement module respectivelyprocesses video images at night, in rainy days and in haze weather conditions by adopting a self-adaptive enhancement algorithm based on closed operation, a fuzzy C-means algorithm and a Retinex algorithm. The data labeling module is used for classifying the liquid leakage states into three types, namely permeation, leakage and injection. The model construction module constructs a five-layer deepneural network model, acquires characteristic parameters through supervised training, and verifies and optimizes the deep neural network through the data verification module. The intelligent early warning system for monitoring device leakage also has the advantages of timely response, high intelligent degree and the like.

The invention discloses an image processing method and device, electronic equipment and a storage medium. The invention discloses an image processing method, and the method comprises the steps of obtaining a to-be-processed video frame sequence, and enabling each video frame in the to-be-processed video frame sequence to serve as a to-be-processed image; performing denoising processing on each to-be-processed image through a preset denoising module to obtain a denoised image feature corresponding to each to-be-processed image; inputting each denoised image feature into a preset super-resolution reconstruction module, obtaining a target image output by the super-resolution reconstruction module, and the resolution of the target image being larger than that of the to-be-processed image; and generating a target video frame sequence according to the target image corresponding to each to-be-processed image. According to the invention, the to-be-processed image is subjected to targeted denoising before image super-resolution reconstruction, so that the image noise can be prevented from being amplified in the reconstruction process, the image quality of the target image after super-resolution reconstruction can be improved, and the image quality of the processed video is further improved.

The invention discloses a process for producing a chloroactic acid by large chlorinated kettles. Three chlorinated kettles of 'two main chlorinated kettles and one auxiliary chlorinated kettle' are utilized, a tail gas which is discharged after main chlorinated kettles are subjected to a chlorination reaction is fed into the auxiliary kettle for the chlorination reaction, after the chlorination reaction, a chlorinated liquid is obtained, the chlorinated liquid is subjected to crystallization and separation to obtain the chloroactic acid, an acetic acid and a catalyst are added into the main kettles, the main kettles are jacketed and heated to 85 DEG C, and a chlorine gas is fed into the main kettles in three stages for the continuous chlorination reaction. The invention simultaneously discloses the chlorinated kettles used for the process. The process for producing the chloroactic acid by the large chlorinated kettles and the chlorinated kettles used for the process have the advantages that a reasonable production process is provided for chloroactic acid production by the large chlorinated kettles, the structure of the chlorinated kettles is improved, thereby the chlorination reaction can be fully and uniformly performed, the reaction time is shortened, a large-scale production requirement is met, the productivity and the product quality are improved, the amplification effect of chemical industry production is avoided, the product purity can reach to above 98%, the yield coefficient based on the acetic acid can reach to 91%, and the product quality reaches to the export product standard.

The invention discloses a low-voltage Bandgap voltage reference circuit, which is characterized in that two BJT (Bipolar Junction Transistor) branches are differentially input to an operational amplifier adopting an NMOS (N-Mental-Oxide-Semiconductor) input pair structure; the output end of the operational amplifier is connected to a current mirror, and voltages on the two BJT branches are enabled to be equal by utilizing deep negative feedback; the base voltage of a shared base BJT in the two BJT branches are adjusted in a self-adaptive mode according to the work conditions of NMOS input pair in the operational amplifier, so currents of the two BJT branches are controlled, and the operational amplifier is enabled to normally work; and the output voltage of the Bandgap voltage reference circuit is generated in a mirror image mode. The invention also discloses a realizing method of the low-voltage Bandgap voltage reference circuit, through the scheme disclosed by the invention, the input voltage of the Bandgap voltage reference circuit is reduced, the Bandgap voltage reference circuit is enabled to work under the lower input voltage, and the deviation of the operational amplifier is prevented from being amplified.

The invention relates to an information diffusion-based small watershed mountain torrent disaster risk analysis method. According to the method, an information diffusion theory is introduced; based onlimited historical mountain torrent data, set-valued processing is performed on samples with monodromy observation values under incomplete information conditions, so that the samples can be transformed into fuzzy set-valued samples with fuzzy uncertainties; a mountain torrent disaster information matrix is established; the calculation of Pearson's III type curve, exceedance probability and confidence is introduced; and therefore, the quantitative assessment of a mountain torrent disaster risk can be carried out rapidly, and a result is closer to actual situations. With the method of the invention adopted, the objectivity and scientificity of the analysis result of the mountain torrent disaster risk can be improved.

The embodiments of the present invention disclose an unlocking method, an unlocking system, a vehicle-mounted apparatus and a mobile terminal. The unlocking method comprises that a vehicle is switched into a quasi-opening mode when the vehicle-mounted apparatus detects a first signal and a first command; authentication information is transmitted to the mobile terminal, wherein the authentication information comprises authentication secret key; and the authentication secret key transmitted by the mobile terminal is received through a preset communication way, and the vehicle is switched into an opening mode.

The invention provides a phase computer-generated hologram encoding error correction method based on least square fitting, and relates to the technical field of computer-generated hologram. Encoding error is corrected by adopting the least square fitting method, the rotational symmetry of a curved surface is ingeniously utilized, the position of each sampling unit is located by a radius value, a one-dimensional array penetrating through the symmetry center acts as error correction points and least square fitting nodes, and the standard encoding value of each sampling unit is solved according to a fitting equation. Difficulty of encoding error correction is reduced and efficiency of encoding error correction is also enhanced by the method. Encoding error correction comprises the steps that cutting, sampling, quantification and gray scale conversion are performed on an object plane phase with the rotational symmetry so that a phase computer-generated hologram is obtained; the one-dimensional array penetrating through the rotating center of the hologram is extracted to perform encoding error correction; the corrected one-dimensional encoding values act as the fitting nodes of the least square fitting equation and the fitting equation is established; and the radius value of each sampling unit is substituted in the fitting equation, and the standard coding value of each sampling unit is calculated and saved in a matrix so that the phase computer-generated hologram after encoding error correction is obtained. The method is suitable for encoding the curved surface with the rotational symmetry.

The present invention provides a display panel reduction method. The display panel comprises an array substrate with the paired box arrangement and a paired box substrate, and the array substrate and the surface departing from the paired box substrate both have a plurality of depression structures. The reduction method comprises: at least performing preprocessing of the paired box substrate; and employing an etching liquid to perform etching of the paired box substrate and the surface departing from the array substrate. The preprocessing comprises: forming protective layers on the surfaces of the depression structures to allow the depression structures to be filled with the protective layers; forming the protective layers by using materials which cannot be etched by the etching liquid; and removing the portions of the protective layers located out of the depression structures, and retaining the portions of the protective layers located in the depression structures. Correspondingly, the present invention further provides a display device. The display panel reduction method and the display device can improve the display effect while realizing the panel thinness.

The invention discloses a measuring system and method of micro angle vibration of a spacecraft. An acceleration measurement combination is arranged in a spacecraft carrier coordinate system, low-frequency minimal-level line vibration, directly related to micro angle vibration, of a carrier is measured, data processing is performed by combining the relative position relationship of the acceleration measurement combination and a spacecraft carrier barycenter, and micro angle vibration of the spacecraft is calculated. The measuring system and method achieves measurement of micro angle vibration of the spacecraft under the space environment, and have the advantages of being high in reliability and accuracy, small in size and low in cost.

The invention relates to a method and a device for eliminating image noises. An image includes p image blocks, the size of each image block is M*N, and M and N are odd numbers. The method comprises the steps of receiving the image blocks on a Bayer domain; adopting sub-image blocks in the size of Sm*Sn with a pixel having the same channel with a central pixel as a center, wherein the central pixel is the central pixel of the received image block, and Sm and Sn are odd numbers; acquiring a filtering weight coefficient of each sub-image block, filtering the image blocks according to the filtering weight coefficient to obtain a real color difference of the central pixel as a first color difference; and calculating a pixel value of the denoised central pixel according to the first color difference and a preset denoising adjustment coefficient. By use of the above-mentioned scheme, the calculated amount of noise processing is reduced while guaranteeing denoising effects.

The invention discloses a method for synthesizing ceftriaxone sodium. The method includes the steps that a compound I and a compound II are added into a reaction vessel containing dimethyl carbonate, a stirring reaction is carried out for 1-2 h at 30-40 DEG C, then a compound III is added, PEG-800 is added with stirring, triethylamine is added after stirring is carried out for 10-20 min, a stirring reaction is carried out for 3-4 h at 8-10 DEG C, then a sodium hydroxide solution is dripped till the pH is 7, excessive acetone is added, white crystals are separated out, and a compound V is obtained after drying. According to the method, 7-ACA, sulfo-triazine heterocycle and cefotaxime side chains are subjected to a one-pot reaction, and successive condensation is carried out without separation; no expensive agent is used in the reaction process, environment-friendly low-toxicity dimethyl carbonate is adopted as a reaction solvent, and in a homogeneous-phase environment formed by PEG-800, high-purity ceftriaxone sodium is obtained at a high yield through simple steps; in addition, the magnification effect is effectively avoided, and the method is particularly suitable for industrial production.