27results about How to "Flexible approach" patented technology

The invention requests to protect a rolling bearing fault diagnosis method based on envelope spectrum knowledge distillation. The method comprises the following steps: obtaining a rolling bearing vibration signal, and carrying out sample division and normalization processing; the spectral kurtosis of the source working condition sample is calculated, the center frequency and bandwidth of envelope demodulation are determined according to the spectral kurtosis, envelope demodulation is carried out, and the demodulation sample is sent to a teacher network phi for pre-training; respectively inputting an original vibration sample and an envelope spectrum sample under a source working condition into a student network psi and a pre-trained teacher network phi, and extracting bearing health state representations learned by the two networks to establish envelope spectrum knowledge distillation loss; calculating the prediction loss of the student network, the cross-working-condition sample probability distribution alignment loss and the diversity loss represented by the health state; carrying out multi-loss back propagation, and optimizing the weight and bias of the fault diagnosis network by adopting an Adam optimizer; and finally, inputting the target working condition sample into the trained fault diagnosis model for performance testing.

The invention discloses a large-scale solid heat storage system and a control method, the system comprises a plurality of heat storage subareas, the heat storage subareas are arranged in parallel, inlets of the heat storage subareas are jointly connected with a main heat storage pipeline, and outlets of the heat storage subareas are jointly connected with a main heat release pipeline; each heat storage subarea comprises a plurality of heat storage pipe sections, the inlet pipe section of each heat storage pipe section is provided with a pipe section inlet valve, the outlet pipe section of each heat storage pipe section is provided with a pipe section outlet valve, the heat storage pipe sections are arranged in parallel, and each heat storage pipe section comprises a plurality of solid heat storage modules; the multiple solid heat storage modules are arranged between the pipe section inlet valve and the pipe section outlet valve in series, the inlet pipe section and the outlet pipe section of each heat storage pipe section are each provided with a temperature sensor, the temperature sensors are connected with a temperature flow feedback control unit, and the temperature flow feedback control units are connected with the pipe section inlet valves.

The invention relates to a radar blindage auxiliary engineering system which comprises a main radar station and secondary radar stations arranged around the main radar station. The main radar station comprises an auxiliary assembly arranged in a mountain and a radar assembly arranged on the auxiliary assembly. The second-stage radar station is arranged on a mountain around the radar assembly; a secondary radar is arranged on the secondary radar station; when the radar assembly works, the secondary radar is started; the device is reasonable in design, compact in structure and convenient to use.

The application provides an integrated circuit yield estimation method and a memory, and the method comprises the following steps: formulating a boundary of a success region and a failure region of an integrated circuit performance in a parameter space, and representing the boundary as a boundary surface formula equation; calculating a size of a space defined by the boundary surface formula equation and a boundary surface formed by each parameter axis; and calculating a ratio of the size of the space defined by the boundary surface formula equation and the boundary surface formed by each parameter axis to a size of a space formed by each parameter range, to obtain an estimated yield. The technical scheme of the application can improve the estimation efficiency of the integrated circuit yield.

The invention discloses a high-speed clock duty ratio stabilizing circuit, and relates to the field of integrated circuits. Comprising an integrator, a voltage-controlled delay circuit connected with the integrator, a Schmidt trigger circuit connected with a voltage-controlled delay unit, a second phase inverter connected with the Schmidt trigger circuit, a second NAND gate connected with the second phase inverter, a clock signal output end connected with the second NAND gate, and a clock signal input end. The circuit comprises a clock signal input end, a first phase inverter connected with the clock signal input end, a first NAND gate connected with the first phase inverter, a third NAND gate connected with the first phase inverter, a current mirror module connected with a voltage-controlled delay circuit, a current source connected with the current mirror module, and a common-mode signal input end, the clock signal output end is connected among the first phase inverter, the integrator and the third phase inverter, the third NAND gate is connected to the second NAND gate, the first NAND gate is connected to the voltage-controlled delay circuit, and the common-mode signal input end is connected to the integrator. The structure is suitable for high-speed clock input, and stable clock signals with the duty ratio of 50% are generated.

The application discloses a kind of agricultural nitrogen-stabilizing synergist for improving nitrogen utilization and application thereof, the agricultural nitrogen-stabilizing synergist includes active component, the active component includes main component and auxiliary component, main component is one or more of riboflavin, riboflavin salt, riboflavin derivative, riboflavin inclusion compound, riboflavin load or riboflavin slow release, auxiliary component is one or more of plant polyphenol compound, tannin substance, lignin substance and humus substance.The application promotes nitrogen conservation path from the perspective of reducing nitric oxide load and relieving reductase inhibition, reduces nitric oxide load, relieves the inhibitory effect of nitric oxide on nitrate or nitrite reduction nitrogen-conserving microorganisms and their related reductase system, promotes the conversion of nitrogen to ammonium nitrogen, and reduces the loss of nitrogen in the form of nitrate leaching or nitrogen-containing gas, thereby improving nitrogen utilization.

An active protection method and system for internal faults in an on-load tap changer of a converter transformer includes: determining the start time of on-load tap changer operation and then extending the time interval; identifying ultra-high frequency (UHF) and high frequency (HF) pulse signals and discharge pulse times exceeding a set threshold within the extended time interval; identifying whether the on-load tap changer is adjusting a polarity-crossing or non-polarity-crossing tap position; determining the internal abnormality of the on-load tap changer based on the UHF and HF pulse signals and their pulse times during operation; and further issuing "general alarm," "serious alarm," or even "protection trip" signals based on the severity of the internal partial discharge detected by the UHF and HF signals. This invention fundamentally avoids false alarms and trips in monitoring or protection devices caused by discharge during normal tap changer operation. Furthermore, it achieves a leap from "passively preventing false operation" to "actively detecting faults," proactively preventing damage to the on-load tap changer itself or even transformer explosions caused by its faults.

This invention provides a reinforcement learning-based method for searching the optimal communication angle of a scattering antenna, belonging to the field of scattering communication technology. The invention models the optimal communication angle search process as a Markov random process and optimizes the search process using reinforcement learning. The steps include: periodically acquiring the communication angle and single-carrier measured signal reception strength during the optimal communication angle search process; constructing and training a reinforcement learning model; saving the training results of the reinforcement learning model; and loading the training results to search for the optimal communication angle in new scenarios. This invention can more closely approximate the optimal communication angle with lower time costs and has good adaptability.

The invention provides a method for testing the corrosion resistance of a coating material forming part, and belongs to the field of coating plate corrosion detection.The method comprises the steps that S1, the top punching height of a coating material standard sample is obtained; s2, according to the top punching height, the bulging height of the standard sample of the coating material is obtained; s3, obtaining a strain distribution cloud chart of the standard sample of the coating material at the bulging height; s4, obtaining a to-be-tested corrosion sample; s5, respectively obtaining strain distribution nephograms of a group of coating material standard samples and a group of corrosion samples to be tested; s6, comparing the strain distribution nephograms of the group of standard samples of the coating material with the strain distribution nephograms of the parts of the target forming part of the coating material; and S7, the corrosion resistance of all parts of the coating material target forming part is obtained. The method for measuring the forming limit curve of the coating and plating material is creatively applied to the corrosion resistance test of the coating and plating material forming part, so that the accuracy of measuring the corrosion resistance of the forming part is improved.

The application provides a limiting structure and a spreading and airing system. The limiting structure is applied to a driving device. The limiting structure comprises a first limiting component and a second limiting component. The first limiting component is installed on the driving device and moves synchronously with the driving device. The second limiting component is arranged at a reversing point of a preset stroke of the driving device. The first limiting component is in sliding contact with the second limiting component. The first limiting component is used for triggering a limiting signal, so that the driving device changes the moving direction at the reversing point and runs. The driving device moves in the range of the preset stroke, and full coverage processing of the fermented grains in the range of the preset stroke is ensured by the spreading and airing system.

The utility model discloses a marine copper watertight switch with an indicating lamp. The marine copper watertight switch comprises a copper shell, a shell cover is fixedly connected above the copper shell through screws, an arc-shaped mounting plate is fixedly connected to the lower end of the outer side of the copper shell, a wiring pipe is fixedly connected to one side of the copper shell, and a protection mechanism is arranged at one end above the arc-shaped mounting plate; the arc-shaped protective cover plate is matched with the arc-shaped supporting half-frame plate to form a closed space, so that water, dust, sundries and impact can be prevented, accidental state change of the switch caused by mistaken touch can be prevented, the cover plate is pushed to slide during operation, the spring is compressed to store energy, the spring automatically resets to drive the cover plate to be closed after operation, tool bare-handed operation is not needed, and operation is convenient. By means of the perspective through window, sailors can know the working state of the switch without frequently opening a cover, convenience, high efficiency and reliability are achieved, the threaded rod is driven to move by rotating the multilateral rotating handle, the line body is supported by the elastic supporting opening ring through the U-shaped rod and the movable inserting rod, and the line body is prevented from loosening due to ship vibration and shaking.

The invention discloses a multi-lane car-following control method based on front vehicle state information and safety constraints. The method comprises the steps that the speed and the yaw velocity of a front vehicle are obtained; identifying a lane through a visual sensor, and determining whether the car-following task is car-following on the same lane or car-following on an adjacent lane; when car following is carried out on the same lane, the track curvature of the front car is directly calculated through the obtained speed and yaw velocity of the front car; when the adjacent lane follows, projecting the front vehicle to the rear vehicle lane according to the lane width, and calculating the trajectory curvature after projection; the trajectory curvature of the front vehicle or the trajectory curvature of the front vehicle after projection is converted from the time dimension to the distance dimension to serve as the target curvature of the vehicle; designing a self-vehicle transverse controller to obtain an ideal self-vehicle wheel rotation angle, and enabling the self-vehicle wheel rotation angle to track a target path; a self-vehicle longitudinal speed controller is designed, ideal self-vehicle wheel torque is obtained, self-vehicle acceleration and deceleration motion is controlled, and the ideal distance between the self-vehicle and the front vehicle is guaranteed.

The present invention relates to a method and device for displaying massive load data based on menu-based dynamic configuration, establishing a data model, and exporting the generated model file online through a configuration tool; further configuring, generating a display configuration file, loading the display configuration file during the power-on restart process, and obtaining the data model; the human-machine interface obtains the real-time data that needs to be displayed in real time from the protection CPU plug-in, and displays it in real time. The present invention is based on the existing data model file of the current embedded device protection CPU, and through the flexible configuration of the configuration tool according to user needs, the interface menu can intuitively and centrally display all data information of the current terminal, solving the problem that the current embedded device menu cannot display global data and global status information on the same interface at the same time, and at the same time, by setting display groups for a large amount of global data, the efficiency of the interface in retrieving CPU global data is optimized, and the communication pressure between the interface and the CPU plug-in is reduced.

The application provides a vehicle-based Bluetooth control method, device, equipment and medium, the method comprises: obtaining voice information of a user by using a Bluetooth headset; converting the voice information into a first control instruction for the vehicle; sending the first control instruction to the vehicle based on a smart terminal network; in response to the received first control instruction, generating an execution result of the vehicle executing the first control instruction, and feeding back the execution result based on the smart terminal; the smart terminal synchronizes the execution result to the Bluetooth headset, and the execution result is voice broadcasted. The application combines the Bluetooth headset with the smart terminal, voice controls the vehicle, greatly improves the application scenario of voice control of the vehicle, and the voice control method of the application is more convenient and flexible.

The invention discloses a large-scale multi-source panoramic situation awareness system and method based on dynamic digital twinning, and belongs to the technical field of safety monitoring of large carrier platforms. The system takes a digital twinning scene as a unified space-time reference, realizes system-level integration of multi-source sensing, data processing and upper computer application, and comprises a multi-source sensing terminal layer, a digital twinning and data processing layer and an upper computer application and visualization layer; the method comprises the steps of sensing data acquisition and edge processing, equipment installation calibration parameter loading and maintenance, carrier attitude and scene coordinate reference updating, multi-source sensing data mapping and dynamic digital twinborn fusion, target position mapping and multi-view visual output, abnormal situation identification, alarm and data recording. According to the method, unified situation space construction, accurate three-dimensional positioning and visual multi-view display can be realized in the navigation, berthing and on-duty scenes of the large ship, and the method has good method expansibility and platform universality.

This invention discloses a blind estimation method for frequency-hopping signal parameters based on atomic features. The method involves: first, windowing, compressed sampling, and atomic feature extraction of the frequency-hopping signal; then, roughly estimating the hopping time based on the distribution of atomic features within different windows; next, precisely estimating the hopping time, hopping period, and hopping speed using a block-diagonalized Fourier orthogonal matrix; and finally, estimating the frequency of each hop signal using an orthogonal matching pursuit algorithm, and obtaining the frequency-hopping pattern of the entire sample by concatenating each hop signal. This invention can adjust the search step size and compression ratio to change the computational complexity and estimation accuracy, adapting to different signal-to-noise ratio (SNR) environments. In high SNR environments, increasing the search step size and compression ratio effectively reduces computational complexity, while in low SNR environments, decreasing the search step size and compression ratio effectively improves estimation accuracy.

The invention relates to a zinc oxide surface oxygen adsorption model, an establishment method and a synaptic performance prediction method. The establishment method of the zinc oxide surface oxygen adsorption model comprises the following steps: establishing a geometric model of a zinc oxide film; based on the slow process of light response of the zinc oxide film in the air and the geometric model, establishing the surface potential of the zinc oxide film in the slow process by using a one-dimensional Poisson equation; based on the geometric model, the current-voltage relationship of the zinc oxide film in the dark field and the ultraviolet light field is respectively established by using an Ohm law differential form; a fitting function of current changing along with time from a dark field to an ultraviolet light field is derived by combining a current-voltage relationship between the surface potential and the zinc oxide film in the ultraviolet light field, and a fitting function of current changing along with time from the ultraviolet light field to the dark field is derived by combining a current-voltage relationship between the surface potential and the zinc oxide film in the dark field. And obtaining the zinc oxide surface oxygen adsorption model. The model established by the invention can accurately predict the synaptic performance of the zinc oxide photoelectric synaptic device.

The utility model relates to the technical field of wall repairing, in particular to an old community wall inner side repairing structure which comprises an outer wall, an inner wall is installed on the side edge of the outer wall, and a repairing structure is arranged at the corner of the inner wall and the outer wall. According to the repairing structure for the inner side of the wall body of the old community, along with the increase of the thickness of the heat preservation mortar layer, the better the heat preservation performance of the wall body is, heat dissipated by a heat bridge part is gradually reduced, but the reduction amplitude is also reduced, the thickness range of the heat preservation mortar layer is 20-50 mm, and the repairing structure can be used for repairing the inner side of the wall body of the old community by considering that the thickness of the heat preservation mortar layer of the inner wall has great influence on indoor use space and attractiveness. Therefore, economical efficiency and practicability are comprehensively considered, the thickness of the thermal insulation mortar layer is preferably 20 mm, compared with an outer wall structure which is not coated with the thermal insulation mortar layer along the inner wall, the thermal insulation mortar layer can reduce the heat loss effect of a thermal bridge part, the thermal insulation measure of adding the thermal insulation mortar layer at the thermal bridge part can reduce the heat loss, and the worse the overall thermal insulation performance of the outer wall is. And the effect of increasing thermal bridge heat preservation measures is more obvious.

The utility model relates to the technical field of truck structure, disclose a telescopic layer structure, including telescopic structure and support structure, telescopic structure includes first telescopic plate and second telescopic plate, first telescopic plate is hinged on the mounting surface, and second telescopic plate is slidably arranged on the first telescopic plate, and the free end of second telescopic plate is fixed with handle;Support structure includes hook, and the hook is fixedly arranged on the mounting surface, and can be fixed on the hook through cooperation with handle and telescopic mechanism. Through the setting of telescopic structure and support structure, when the height of the transported article is higher, the telescopic structure can be folded through the hook, avoiding the influence of the existence of telescopic structure on the maximum transport height of truck, when the height of the transported article is lower but the bearing capacity is poorer, the telescopic structure can be unfolded, and the carriage of truck is layered, the gravity received by single-layer goods is reduced, the mode of transporting article is more flexible, thereby improving loading efficiency.

The present application relates to the technical field of multimodal data processing, specifically to a multimodal sentiment analysis method and system with audio modality as the target modality; in order to solve the problem of low accuracy of multimodal sentiment analysis in the prior art, the present application formulates that when the audio modality exists, the image modality and the text modality are translated into the audio modality, and after fusion, neural network processing is performed to obtain a multimodal sentiment prediction result; when the audio modality does not exist, the mutual information score is used to determine which modality contains more sentiment information, so that other modalities can be translated to it to obtain missing joint features, and the standard complete joint features are used as the target, and the missing joint features are approximated to the complete joint features for neural network processing to obtain a multimodal sentiment prediction result; this method is applied to the field of multimodal sentiment analysis, the processing process is more flexible, the analysis process is more comprehensive and reasonable, and the sentiment prediction results are more accurate.

The invention provides a channel correction method and a related device, which are beneficial to realizing channel correction with relatively low hardware design complexity and maintenance cost. The method comprises the following steps: a second communication device sends a first correction frame to a first communication device; the first communication device determines a first channel response of each receiving channel in at least one receiving channel corresponding to the first communication device relative to at least one sending channel corresponding to the second communication device based on the first correction frame; the first communication device sends a second correction frame to the second communication device; the first communication device receives a second channel response of each receiving channel in at least one receiving channel corresponding to the second communication device relative to at least one sending channel corresponding to the first communication device, wherein the second channel response is determined based on the second correction frame; and the first communication device corrects a sending channel and a receiving channel corresponding to the first communication device based on the first channel response and the second channel response.

The invention discloses an unstructured file analysis and visual display method, system and device and a medium, belongs to the technical field of data processing and visual display, and aims to solve the technical problem of how to improve the processing efficiency of unstructured files, enhance the integration and analysis capability of data and improve the data processing efficiency. According to the technical scheme, the method comprises the steps of importing unstructured files into an integrated analyzer, extracting metadata of various types of unstructured files through the integrated analyzer, converting the metadata into structured data, storing the structured data into any target data source, querying by utilizing an SQL (Structured Query Language) or an API (Application Program Interface) interface, and finally obtaining the data-driven decision-making response speed and quality. A data set is generated through various script conversion tools and is called in a large screen and report design, and visualized analysis and display of unstructured file data are achieved.

The application relates to a magnetic adsorption electric measuring device and a method, which comprises a detection circuit and a conductive magnet; the conductive magnet is used as a detection probe of the magnetic adsorption electric measuring device and a mounting adsorption component; and the conductive magnet is connected in series into a detection loop of the detection circuit. In the application, the conductive magnet is changed from a traditional mechanical accessory irrelevant to the circuit into a necessary electrical functional component. The conductive magnet is no longer an additional product but an indispensable part in the current detection path, and realizes the qualitative change from 'physical adsorption' to 'electrical access'. Moreover, since the conductive magnet directly serves as an electrical probe, the metal pen point or probe which must exist independently and is used for electrical contact in the traditional design can be omitted or integrated with the magnet. This reduces the number of parts and simplifies the physical structure of the front end of the device.

The application discloses a kind of gradient interface state's implementation method and a kind of gradient interface state enhanced self-powered photoelectric detector, including p-Si base, gradient interface state distribution n-type oxide semiconductor film and conductive electrode;The gradient interface state distribution is obtained by the method of simultaneously applying bias voltage and ultraviolet light irradiation, the concentration of negative interface state obtained along p-n junction interface increases towards the top electrode direction, reduces interface transfer resistance, obtains enhanced p-n junction equivalent built-in electric field, and then reduces the recombination probability of carrier at interface, improves pyroelectric photoelectron effect, improves the transient transport efficiency of photo-generated carrier.The gradient interface state generation method has the characteristics of flexibility, easy to implement;The responsivity and detection capability of the gradient interface state enhanced self-powered photoelectric detector are significantly improved compared with uniform interface state distribution, and the enhancement effect has the characteristics of being generally applicable in ultraviolet-visible-near infrared light region, and can be widely applied to thermal imaging, environmental monitoring, intelligent agriculture, biomedical, missile guidance and space communication and other civil and military fields.

The application discloses a kind of offshore satellite launch information recommendation method and system based on association matrix, belong to offshore satellite launch information processing technical field, by analyzing satellite launch information guarantee demand, the association matrix between user role, task and information element is constructed, the connection between user and information element can be established.The method of the application first establishes hierarchical task representation method according to satellite launch plan, then defines information element and recommendation opportunity in each stage, finally carries out information recommendation according to real-time situation.The application also provides a system for realizing the above method, the method and system of the application can efficiently provide required information for user, and is a kind of better information quick guarantee method applicable to offshore satellite launch.

The invention discloses a method for detecting benzothiophene derivatives and positional isomers thereof, which adopts the following chromatographic conditions: an octadecylsilane chemically bonded silica chromatographic column is selected, a mobile phase is composed of a mobile phase A and a mobile phase B, the mobile phase A is an aqueous solution of cyclodextrin and / or derivatives thereof, the mobile phase B is an alcohol solvent or a nitrile solvent, and the mobile phase A is an aqueous solution of cyclodextrin and / or derivatives thereof. And carrying out isocratic elution. The method can realize effective separation of the benzothiophene derivative and the positional isomer thereof, and is good in repeatability, high in sensitivity and accuracy, low in cost, flexible, economical and applicable.

The invention relates to a radar hidden type mountain operation engineering method. A radar blindage auxiliary engineering system is used. The method comprises a non-wartime working step and a wartime step. In the non-wartime working step, the secondary radar is started; the main radar station is in a closed state; in the wartime step, the secondary radar is started, and the main radar station is intermittently started; the main radar station and the secondary radar form a radar matrix.