12results about How to "Avoid unreliability" patented technology

The invention relates to the technical field of vehicles, in particular to a vehicle-mounted music playing control method and device, a vehicle, a medium and a program, and the method comprises the steps: monitoring a Bluetooth playing state of a client; if the Bluetooth playing state is a playing state, reading a Bluetooth setting mode configuration item; and controlling the vehicle machine system to execute the target operation according to the Bluetooth setting mode configuration item. Therefore, the problems that the Bluetooth music playing mode is single, audio file analysis is unreliable, hysteresis exists, and the experience feeling is poor due to the fact that autonomous control cannot be conducted according to user requirements in the prior art are solved.

The utility model discloses a capacitor bushing root double-sealing structure, and belongs to the technical field of capacitor bushing root sealing. The sealing structure comprises a capacitor bushing body, a sealing gasket group and a root flange, the sealing gasket group is arranged between the outer wall of the capacitor bushing body and the inner wall of the root flange, and the root flange sleeves the capacitor bushing body; the root flange comprises a first end body, a middle body and a second end body, and the first end body, the middle body and the second end body are of an integrated structure. According to the root flange, the first end body, the middle body and the second end body are of the integrated structure, installation is easy and convenient, compared with a two-section type flange, the integrated structure is more uniform in stress and not prone to damage, the structure is simple, the structure is compact, and the service life of the root flange is prolonged. And the second sealing gasket and the first sealing gasket are matched with the root flange to form a double-sealing structure, so that the problem of unreliability caused by failure of single-time sealing of the root is solved.

The application belongs to the technical field of data analysis, and discloses a state perception and adaptation method and system based on multi-source heterogeneous data fusion, which comprises the following steps: collecting heart rate data, state data and cognitive data of a subject, generating baseline heart rate, state characteristics and initial cognitive characteristics respectively; generating a state perception result; judging whether the initial cognitive characteristics meet the adaptation input condition according to the state perception result; if not, performing recovery mode training, and re-collecting cognitive data and state data after the recovery mode training is completed, generating updated cognitive characteristics and comprehensive recovery confidence; then judging whether the adaptation input condition is met, if yes, taking the initial cognitive characteristics or the updated cognitive characteristics that meet the adaptation input condition as effective cognitive characteristics, and calling the effective cognitive characteristics to perform recommended scheme adaptation, otherwise, repeatedly performing the recovery mode training; the application improves the reliability and applicability of the ability evaluation and rehabilitation system.

The application discloses a kind of secondary frequency control method, device and storage medium based on neural network, belong to microgrid control technical field, method includes: obtaining the rated angular frequency of distributed microgrid preset, and the active power of each distributed power generation unit;Active power is respectively input into the corresponding pre-trained neural network, and the frequency compensation of each distributed power generation unit is output, the frequency deviation caused by droop control is compensated, so that the angular frequency of distributed microgrid output recovers to the rated angular frequency preset;Corresponding pre-trained neural network refers to the neural network that each distributed power generation unit corresponds one training process and is added privacy protection processing, so that attacker cannot infer whether single sample is used for the training of neural network according to neural network output result.The application can improve the security and stability of microgrid, solve the problem that traditional secondary frequency control method exists privacy leakage risk and security risk.

The present invention relates to the technical field of blockchain and machine learning, and provides a decentralized sharing and cross-chain computing method and system for power data. In the first part, the method uses intelligent Internet of Things devices to collect power data and uses the IPFS system in combination with the alliance blockchain to store the power data, and combines homomorphic encryption technology to ensure the privacy of the data. The above method is used to complete the collection and storage of power data. The proxy re-encryption technology is used to complete the conversion of the right to obtain ciphertext data, and the cross-chain technology based on notary nodes and the data alliance chain are used to complete the sharing of power data to local client nodes in the training alliance chain. In the second part, effective local model updates are selected and local model updates are uploaded to the chain. Global model aggregation is completed by aggregating the alliance chain, and the node reputation information is uploaded to the chain and the node reputation information is fed back to the power data center at the same time.

The present invention discloses a satellite attitude fault detection method combining Xgboost with FocalLoss under data imbalance, which is mainly based on the data of star sensors, gyroscopes and reaction wheels in the attitude control system on the satellite, and transmitted to the ground station through telemetry for fault detection. The extremely unbalanced distribution of normal data and fault data in the telemetry data is processed, and the fault data is classified and detected by using Xgboost combined with the Focalloss loss function. This application improves XGBoost by using the Focalloss loss function proposed in the image to target the unbalanced characteristics of satellite fault data at the data level and the model level, and has a good effect on classifying structured data such as telemetry. In the case of unbalanced telemetry fault data, the fault can be well detected. At the same time, it also solves the unreliability of simply using accuracy as the detection result.

The invention relates to the technical field of oil-gas exploration, and discloses an oil-gas filling identification method, system and equipment and a medium, which are used for recovering hydrocarbon fluid characteristics in an oil-gas filling process on the basis of microcosmic fine analysis of inclusion fluorescence characteristics, inclusion in-situ hydrocarbon chromaticity parameters and the like. The method effectively avoids the problems of judgment distortion, errors and the like caused by application of crude oil biomarkers in current oil reservoirs. Meanwhile, heterogeneity of reservoirs on a plane and a section of a research area is fully considered, comparison, optimization and verification are carried out in a manner of combining macroscopic characteristics of the inclusion and multiple parameters of in-situ hydrocarbon biomarkers in the inclusion in a dense-level sampling manner from a microscopic perspective, and the oil and gas filling direction and the oil and gas enrichment strata series can be effectively and accurately judged; and the unreliability of recovering oil and gas filling by a single method is avoided, and the method has great popularization and application values.

The utility model discloses a motor direct connection rotary body mixer, include: mounting panel, install the motor of revolution of mounting panel on, with the output shaft connection of motor of revolution of revolution frame, the electric slip ring of sleeve on the output shaft of motor of revolution, the autorotation device of symmetrical installation on the both ends of revolution frame, the autorotation device includes: install motor support, mounting seat respectively on the revolution frame, install the autorotation motor of motor support, install the bearing in mounting seat, with the inner ring connection of bearing of rotation axis, with centrifugal cylinder of rotation axis connection, the output shaft of autorotation motor is connected with rotation axis, and electric slip ring is connected with autorotation motor electricity. The utility model discloses each autorotation device and configure a single autorotation motor, thereby need not specially setting up belt power transmission system, effectively avoided the unreliability of belt power transmission system, realized the demand of satisfying long time stable operation.

The invention discloses a hydraulic machinery stall vortex online identification method based on nonlinear dynamic characteristics, and relates to the field of hydraulic machinery operation monitoring and fault diagnose.The hydraulic machinery stall vortex online identification method can distinguish loading and unloading processes by introducing an empirical formula and a model of a guide vane change rate, accurately identifies a vortex strip state on a hysteresis loop, and improves the accuracy of stall vortex identification. The dynamic error is reduced by more than 80%; secondly, through an empirical formula, the input of the neural network has a clear hydraulics meaning (such as a velocity triangle relation), and the unreliability of a pure black box model is avoided; wherein the complex fluid physical law is concentrated in an empirical formula, the neural network only needs to process residual mapping, the operation speed is extremely high, and the method can be deployed in an in-situ control unit.

The invention relates to a curved surface substrate component packaging method, and relates to the technical field of aviation composite material forming. Comprising the steps that a substrate is of a curved surface structure, the curved surface is a non-developable curved surface, the non-developable curved surface is divided into a plurality of sub curved surfaces, all the sub curved surfaces form a complete non-developable curved surface, and all the sub curved surfaces are developable curved surfaces; cutting the packaging material into corresponding small blocks corresponding to each sub-curved surface, and paving each small block of packaging material on the surface of the substrate corresponding to the sub-curved surface according to the shape; enabling all the small packaging materials to form a complete packaging material layer; after the complete packaging material layer is thermally cured, it can be ensured that electronic components on the surface of the substrate are packaged. The method is suitable for forming of a complex curved surface active electromagnetic functional structure, planar filling of a three-dimensional structure component is achieved through secondary packaging treatment of a high-density component, and a good bonding interface is provided for subsequent bonding.

The utility model relates to pipe joint installation technical field discloses an auxiliary structure for installing round pipe culvert pipe joint, include: mobile support, azimuth adjusting assembly and hoisting assembly, hoisting assembly is used for hoisting pipe culvert, hoisting assembly is connected with azimuth adjusting assembly, azimuth adjusting assembly installs on mobile support, azimuth adjusting assembly is configured as can adjust the plane position of hoisting assembly, azimuth adjusting assembly includes first guide rail and second guide rail, first guide rail extends along the first direction, second guide rail is movably installed on first guide rail to make second guide rail can move along the first direction, second guide rail extends along the second direction, and hoisting assembly is movably installed on second guide rail to make hoisting assembly can move along the second direction, first direction is perpendicular with second direction. In the utility model, through the perpendicular intersection design of first guide rail (moves along the first direction) and second guide rail (moves along the second direction), the accurate displacement adjustment of hoisting assembly in plane is realized.

The utility model discloses a cold plate, a battery and a power utilization device, and the cold plate comprises a plate body; the flow channel wall is connected with the plate body, and a part of the flow channel wall is separated from the plate body, so that the flow channel wall is matched with the plate body to form a flow channel; the runner wall and the plate body are of an integrally-formed structure. In the embodiment of the invention, the runner wall and the plate body are integrally formed, so that the cold plate can be manufactured by multiple times of processing, and the manufacturing process of the cold plate is simplified.