75results about How to "Reduce system complexity" patented technology

The invention relates to the technical field of piston ring group wear monitoring, in particular to a piston ring group wear life prediction method and system. The method comprises the following steps: collecting working state data of a piston ring group in real time, de-noising by using improved wavelet transform, processing missing data by using a KNN interpolation method, standardizing and normalizing the processed data, adopting a filtering label generation and auditing mechanism to ensure the ordered homogeneity of the data, and constructing an over-limit learning machine model to obtain a piston ring group model; a hidden layer weight and an offset vector are randomly generated to calculate a hidden layer output matrix, a whale optimization algorithm is adopted to optimize model parameters, the prediction precision is improved, then the residual life is predicted, a final prediction result is used for calculating a fault risk coefficient and comparing the fault risk coefficient with a preset threshold value, maintenance suggestions are provided, and real-time data and the prediction result are displayed. And a user is assisted to make a maintenance decision. The advanced signal processing technology and the machine learning algorithm are combined, and the maintenance efficiency of the piston ring set and the reliability of equipment operation are improved.

The invention provides an underwater multi-view three-dimensional reconstruction method. The underwater multi-view three-dimensional reconstruction method mainly comprises the following steps: S1, acquiring a high-quality multi-view underwater image through a physical perception image enhancement technology PUIE; s2, initializing a neural symbol distance function SDF, and implicitly representing the three-dimensional shape of an object by a neural network; s3, generating a two-dimensional foreground mask by using few-sample multi-view target segmentation, and obtaining three-dimensional geometric information in combination with monocular depth estimation and normal vector prediction to form mixed geometric prior; and S4, in combination with an image enhancement result and mixed geometric priori, through a joint loss function, training a neural network optimization SDF, and completing accurate three-dimensional reconstruction. According to the underwater three-dimensional reconstruction method, a more efficient and more accurate underwater three-dimensional reconstruction solution is provided by introducing mixed geometric prior and optimizing the reconstruction process of the neural symbol distance function SDF.

The invention relates to an air conditioner temperature and humidity independent control system and method based on two-stage coil chilled water. On the basis of the existing chip plant temperature and humidity independent control based on a fresh air processing unit, a return air drying and cooling coil and a fan filtering unit, low-temperature chilled water outlet of a water chilling unit firstly passes through a fresh air re-cooling coil; return water obtained after the temperature of the fresh air re-cooling coil pipe rises serves as water supply of the fresh air pre-cooling coil pipe and the return air cooling dry coil pipe, so that two-stage coil pipe chilled water is formed, and the return water of the fresh air pre-cooling coil pipe and the return water of the return air cooling dry coil pipe are mixed and then serve as chilled water return water of the water chilling unit. By increasing the return water temperature of the water chilling unit, the average evaporation temperature of an evaporator of the water chilling unit is increased. A bypass is arranged between an inlet and an outlet of the return air cooling dry coil, and the air temperature in the plant is controlled by adjusting the bypass flow through an electric two-way adjusting valve and a PID controller. Compared with the prior art, the invention has the advantages of high unit energy efficiency ratio, low refrigeration energy consumption, simplified system and the like.

The invention discloses an adaptive power control method for a duplex-winding induction generator system, and belongs to the technical field of generator control. The double-winding induction generator system is composed of a double-winding induction generator, an energy storage unit, a static excitation converter and a diesel engine. According to the self-adaptive power control method, control winding current is decoupled into excitation control and electromagnetic torque control through coordinate transformation based on rotor flux linkage orientation, independent adjustment of output power of the generator is achieved, passive regulation and control of power of an energy storage unit are achieved through control of electromagnetic torque of the generator, and the self-adaptive power control method is achieved. The problem that the control freedom degree of a single converter system is insufficient is solved. Besides, according to the control method adopted by the invention, a dynamic planning-based generator / energy storage unit power distribution strategy with minimum fuel loss as a target is adopted, so that the generator is ensured to always work in a high-efficiency interval of the diesel engine within a wide load change range, and the power generation cost is remarkably reduced.

The invention provides a method and device for discharging residual charges of an air conditioner and the air conditioner. The air conditioner at least comprises a capacitor charging control circuit, a bus capacitor circuit, a fan driving circuit, a main control chip and a fan load. The discharging method comprises the steps that the main control chip responds to a bus capacitor discharging instruction and outputs a control signal used for controlling a capacitor charging control circuit to be disconnected; and obtaining a capacitor voltage value of a bus capacitor in the bus capacitor circuit, and controlling the fan driving circuit to drive the fan load to work through the obtained capacitor voltage value. According to the invention, rapid and efficient discharge of the bus capacitor can be realized, and the hardware cost and the system complexity are reduced on the premise of not influencing the working efficiency of the air conditioner.

The invention discloses a three-phase intelligent electric energy meter and an intelligent metering system thereof, relates to the technical field of three-phase electric energy meter metering, and aims to solve the technical problem that a large error exists in a measured value of a traditional three-phase electric energy meter metering system, and the three-phase intelligent electric energy meter comprises an electric energy metering unit which is used for collecting and metering three-phase voltage and three-phase current, a corresponding three-phase pulse digital quantity signal is generated; the processor module is connected with the electric energy metering unit and is used for receiving the three-phase pulse digital quantity signal and calculating to obtain voltage and current measurement values of each phase; the metering module is connected with the processor module, and is used for receiving the voltage and current measurement values, processing single-phase, two-phase and three-phase imbalance conditions, calculating an active electric energy metering value and a reactive electric energy metering value, and generating digital quantity signals of the active electric energy and the reactive electric energy; and the signal acquisition module is connected with the metering module and is used for acquiring digital quantity signals of the active electric energy and the reactive electric energy. The method has the advantage of improving the electric energy metering precision.

The invention discloses a matrix type temperature detection system and method based on temperature-sensitive diodes, the problems of complex wiring and large temperature drift of a traditional multi-node temperature measurement system are solved through M * N matrix layout, row and column time-sharing gating and constant current driving technologies, the system adopts an independent column constant current source to ensure the measurement consistency, and a high-precision ADC and a dynamic calibration algorithm are combined, so that the measurement accuracy is improved. And the precision of + / -0.2 DEG C is realized within the range of 50-150 DEG C. The method is particularly suitable for high-density temperature measurement scenes such as battery thermal management, electronic equipment overheating monitoring and the like.

The invention discloses a cross-city traffic prediction method and system based on multi-modal fusion and spatial expert routing, relates to the technical field of traffic prediction, and provides an adaptive modal selection mechanism based on a signal-to-noise ratio for the problems of missing, noise and uneven quality of multi-modal data in different cities. And a low-quality mode is dynamically suppressed in combination with comparative learning, and robust multi-mode fusion is realized. In order to solve the problems of large space structure difference and weak generalization ability among cities, a multi-modal guided space expert routing architecture is designed: modal sharing experts and routing experts are activated by using a multi-modal context, and local space dependence is adaptively modeled for different functional regions. The method supports any modal combination input, city specific fine tuning is not needed, and the zero sample cross-city prediction performance is significantly improved.

The invention discloses a method and terminal for detecting glass defect characteristics, and the method comprises the steps: carrying out the line-by-line scanning of glass through employing a line-scan digital camera, and switching a preset type of light source condition for each line of image during the scanning; respectively acquiring exposure data of each row of images under a corresponding light source condition; splitting the collected exposure data into a plurality of sub-images according to light source conditions, and splicing image lines under each light source condition to generate corresponding independent light source images; based on each independent light source image, extracting an image with clearest defect features as an optimal image; and performing defect detection on the optimal image by using a deep learning model, and outputting defect positions and types.

The invention provides RNA site-directed editing by utilizing an artificially constructed RNA editing enzyme and related application. According to the present invention, an RNA recognition domain for binding RNA and a functional utility domain are fused to form a novel functional protein, and the novel functional protein specifically targets the target RNA through the recognition domain and uses the utility domain to perform RNA editing.

This invention discloses a method for restoring turbulent degradation images based on complex amplitude detection, belonging to the field of computational optics imaging technology. This method constructs a computational optics imaging system without a hardware correction unit. It utilizes a wavefront sensor and an imaging sensor to simultaneously acquire Hartmann images and target degradation images. A computational unit performs wavefront complex amplitude reconstruction and aberration correction. Based on this, a physically constrained end-to-end neural network architecture is designed. By reconstructing the wavefront complex amplitude, it achieves accurate mapping and inference from the Hartmann image to the point spread function of the imaging system. Finally, a multi-scale deconvolutional network is combined to complete high-quality restoration of the turbulent degradation image. This invention eliminates the need for a hardware corrector, overcomes the physical limitations of traditional adaptive optics, effectively solves the problem of insufficient point spread function accuracy, and enables time-delay-free and highly efficient turbulent image restoration under low-cost conditions.

The perception-assisted predictive handover method in the high-speed railway tunnel scene of the application belongs to the technical field of wireless communication and intelligent transportation, and the steps include: constructing a bistatic communication and perception integrated architecture, establishing a communication and perception signal model considering double selective channels, deducing a lower bound of Cramer-Rao based on joint time delay-Doppler parameter estimation to establish a perception-assisted location prediction model, designing a three-state predictive handover mechanism based on perception information, and proposing a perception-assisted dual deep Q network algorithm, jointly optimizing handover decision, clamp antenna configuration and power allocation. By integrating perception capability into handover decision, the application realizes predictive switching before signal degradation, significantly improving the handover success rate and communication throughput in the high-speed railway tunnel scene.

The invention discloses an ultra-wideband weak signal detection method and system based on all-optical oscillation and phase-amplitude conversion. The method comprises the steps that spontaneous radiation light generated by an erbium-doped optical fiber amplifier is used as an optical carrier; modulating a weak radio frequency signal to be measured received by an antenna to the optical carrier through an optical modulator to form a modulated optical signal; the modulated optical signal is injected into an all-optical oscillation circuit composed of double loops, the all-optical oscillation circuit generates multimode optical oscillation by adjusting an optical attenuator, and the all-optical oscillation circuit comprises a double-loop interference structure; performing phase-amplitude conversion by adjusting the delay difference of the two light paths in the double loops to form an equivalent microwave photon filter so as to select and amplify the modulated light signal corresponding to the radio frequency signal of the set frequency band; and converting the selected and amplified modulated optical signal into an electric signal, and performing spectral analysis to detect the weak radio frequency signal to be detected.

The invention relates to the technical field of battery manufacturing, and particularly discloses a gluing quality detection method and system. The gluing quality detection method comprises the following steps: driving a camera to return along the original path of a gluing track by using a robot which finishes gluing to carry out segmented shooting on the gluing track of a workpiece, so as to obtain a plurality of glue line images; performing parallel processing on the plurality of glue line images to obtain a plurality of colloid regions and obtain colloid boundary contours in the colloid regions; calculating a glue width mean value, a glue width standard deviation or a glue spacing mean value of the gluing track according to the glue boundary contours in the plurality of glue areas; and according to the glue width mean value, the glue width standard deviation or the glue spacing mean value, the gluing track quality is judged. The gluing robot is used for driving the camera to return along the gluing track along the original path for shooting, the camera moves along the whole gluing path and collects images through the track synchronous flying shooting technology, and the problem of detection blind areas caused by view limitation of large-size workpieces is fundamentally solved.

This utility model belongs to the field of lithium battery technology, specifically relating to a circuit for cascaded detection logic control to protect multiple lithium battery strings. By cascading multiple single-cell lithium battery protection ICs and combining them with a logic control circuit constructed using PNP transistors, the circuit can precisely control the conduction or cutoff of the charging / discharging MOSFETs based on the output signal of each single-cell lithium battery protection IC, thereby achieving efficient protection for multiple lithium battery strings. The simple cascading method adapts to lithium battery packs with different numbers of strings, eliminating the need for complex protection circuits for each string, greatly reducing hardware costs and system complexity. The number of cascaded single-cell lithium battery protection ICs can be flexibly adjusted according to actual needs, making it suitable for battery pack applications in consumer electronics and power tools where cost control is crucial. Therefore, it not only solves the problems of high cost and complex design in existing technologies but also improves the stability and reliability of the system.

The invention discloses intelligent online monitoring equipment applied to a cable joint, which belongs to the technical field of cable detection and comprises a transmission optical fiber, a fiber bragg grating sensor, an optical fiber demodulator, a data processing unit and an intelligent early warning unit. The transmission optical fiber is used for monitoring signal transmission; the sensor is installed at a key temperature measurement part of a cable joint and is connected in series through optical fiber fusion to form a sensing network. The optical fiber demodulator realizes multi-joint positioning monitoring and wavelength offset acquisition through a wavelength division multiplexing or time division multiplexing technology; the data processing unit converts the wavelength offset into temperature variation; and the intelligent early warning unit adopts a convolutional neural network, a bidirectional long-short-term memory network and a self-attention mechanism mixed model to realize fault grading early warning and temperature rise trend advanced pre-judgment. The cable joint fault early warning system does not need field power supply, is high in anti-electromagnetic interference capability, can realize all-weather online monitoring and accurate positioning, and effectively improves the accuracy and timeliness of cable joint fault early warning.

The application discloses a kind of terminal post bolt loosening detection method, device, equipment and readable storage medium, it is related to new energy automobile motor technical field, comprising: the current speed of vehicle driving motor is obtained, the current state of vehicle is judged according to the current speed of vehicle driving motor;When the current state of vehicle is stationary state, detection signal is injected to vehicle driving motor, the impedance angle of motor phase winding is calculated according to the detection signal and the feedback signal of acquisition, whether the terminal post bolt of vehicle driving motor is loosened according to the impedance angle of motor phase winding calculated;When the current state of vehicle is running state, the motor current unbalance degree is calculated according to the three-phase current of vehicle driving motor, and whether the terminal post bolt of vehicle driving motor is loosened according to the motor current unbalance degree calculated.The application judges whether the terminal post bolt loosens in the stationary, running state of vehicle, realizes low cost, high reliability on-line detection.

The utility model belongs to the technical field of material receiving devices, and provides a material receiving mechanism, which comprises a support frame, a plurality of material trays, a plurality of material receiving devices and a plurality of material receiving devices, the material distributing piece is arranged on the supporting frame and has a first supporting state and a tray distributing state, the supporting table is movably arranged on the supporting frame, and the supporting table has a tray taking state and a second supporting state. Compared with the prior art, the material distributing piece with the first supporting state and the tray distributing state is arranged, and the supporting table movably arranged on the supporting frame is matched, so that a plurality of trays stacked in multiple layers are automatically separated and received layer by layer, and the trays can be taken and placed layer by layer without depending on external carrying equipment; the material receiving capacity and the automation degree are effectively improved, the manual operation intensity and the system complexity are reduced, and the overall production efficiency is improved.

The invention relates to a gateway equipment power-off alarm method, which comprises the following steps of: configuring alarm parameters, and when equipment is powered on and started, writing an IP address, a port number and SNMP alarm packet contents of power-off alarm into a running memory of the equipment by an upper application program through an API (Application Program Interface); monitoring a power supply state: monitoring the power supply state of the gateway equipment in real time through a power supply detection module; power supply abnormity is detected, and when the power supply detection module detects that the voltage is lower than a set threshold value, a signal is sent to the CPU; a power-off event is confirmed, and the CPU judges whether the power-off event occurs or not according to the received signal; an interrupt signal is processed, the drive program captures the interrupt signal, reads the alarm parameters written into the running memory, and prepares and sends an SNMP alarm packet through a socket interface; alarm information is sent, and the drive program sends the prepared SNMP alarm packet to a specified IP address and port through a network interface; and emergency treatment. And alarm information is generated in time during power failure and sent to a preset terminal.

The application discloses an access management method and device for heterogeneous devices of an Internet of Things platform, equipment and a storage medium. The method comprises the following steps: registering the heterogeneous devices based on a pre-constructed communication model and a data model; receiving an access request of a to-be-connected device, and matching the access request with the registered heterogeneous devices to perform identity authentication on the to-be-connected device; when it is determined that the to-be-connected device is a legal device, determining a matched data model and a matched communication model of the to-be-connected device, and performing access management on the to-be-connected device based on the matched data model and the matched communication model. The above embodiment registers the heterogeneous devices through the communication model and the data model, performs identity authentication on the to-be-connected device, and performs access management on the legal device and the matched data model and the matched communication model, so that the system complexity and the device access cost of the Internet of Things platform are obviously reduced.

This invention discloses a trajectory compensation method, device, and medium for cable-driven joints in robotic arms, belonging to the field of trajectory tracking for cable-driven joints in robotic arms. The method includes: Step 1, establishing a kinematic model of the cable-driven joint based on its structural parameters; Step 2, establishing a dynamic model of the cable-driven joint based on the kinematic model established in Step 1, combined with cable elasticity, damping, and sheave friction; Step 3, designing an excitation trajectory using finite-term Fourier series and identifying the dynamic model of the cable-driven joint established in Step 2 using a particle swarm optimization algorithm; Step 4, calculating the compensation amount for the actual execution trajectory based on the identified dynamic model of the cable-driven joint in Step 3, and controlling the cable-driven joint to execute the compensated trajectory according to the compensation amount. This method significantly improves the trajectory tracking accuracy and execution stability of the robotic arm.

The invention discloses a nuclear power station composite passive safety system which comprises a first thermoelectric conversion subsystem, a second thermoelectric conversion subsystem and a third thermoelectric conversion subsystem, the first thermoelectric conversion subsystem is arranged at the upper part of a containment, the second thermoelectric conversion subsystem is arranged at the lower part of the containment, and the third thermoelectric conversion subsystem is arranged at the lower part of the containment. The third thermoelectric conversion subsystem is arranged in a fuel plant outside the containment; the first thermoelectric conversion subsystem, the second thermoelectric conversion subsystem and the third thermoelectric conversion subsystem each comprise a hot end, a cold end and a thermoelectric conversion device, the hot ends and the cold ends are arranged at different positions respectively, temperature differences exist between the hot ends and the cold ends, and the thermoelectric conversion devices can convert the temperature differences into electric energy. Therefore, electric energy is provided for each device of the nuclear power station cooling system.

The invention relates to a surface element hydrophone array design method based on a rigid insulating backing. A rigid insulating material is used as the rigid insulating backing; designing a plurality of electrodes on the rigid insulating backing as required, and enabling the plurality of electrodes formed on the surface of the rigid insulating backing to be mutually insulated; a through hole is formed in each electrode, the through holes penetrate through the electrodes from outside to inside and extend into the rigid insulation backing on the back face, and conductive materials are arranged in the through holes so that the corresponding electrodes can be led out. According to the invention, a patterned electrode structure can be freely customized on the rigid insulating backing according to requirements, and a plurality of electrodes are led out by directly utilizing the rigid insulating backing, so that the problem of device cutting and reassembling is avoided, and the difficulty of an arraying process is greatly reduced.

The present invention relates to the technical field of piston ring group wear monitoring, specifically a method and system for predicting the wear life of a piston ring group; firstly, the working status data of the piston ring group is collected in real time, and the improved wavelet transform is used for denoising and the missing data is processed by the KNN interpolation method, then the data after standardization and normalization is processed, and the filter label generation and audit mechanism are used to ensure the ordered homogeneity of the data, and an ultra-limited learning machine model is constructed, and the hidden layer output matrix is ​​calculated by randomly generating hidden layer weights and bias vectors, and the model parameters are optimized by the white whale optimization algorithm to improve the prediction accuracy, and then the remaining life is predicted, and the final prediction result is used to calculate the fault risk coefficient, and compared with the preset threshold value to provide maintenance suggestions, and the real-time data and prediction results are displayed to assist users in making maintenance decisions. The present invention combines advanced signal processing technology and machine learning algorithms to improve the maintenance efficiency of the piston ring group and the reliability of equipment operation.

The application provides a flight and land control method of a coaxial amphibious unmanned aerial vehicle, comprising the following steps of: obtaining a desired space position quantity in a flight mode, and solving a posture angle signal and a lift signal by a position controller and a speed controller in combination with a state variable in a dynamic model of the unmanned aerial vehicle in the flight mode; inputting the posture angle signal and the state variable into an attitude control module to obtain a desired torque signal; giving control signals of upper and lower motors and a rudder motor according to the desired torque signal and the lift signal by using a control instruction distributor, and controlling an actuator to execute a flight task according to the control signals. The control strategy of land mode power transmission control can control the left and right rotors of the body to rotate at the same speed and in the same direction when executing straight forward movement. When performing a backward movement, the left and right rotors are controlled to be reversely rotated synchronously.

The utility model provides a kind of valve body assembly applied to lifting hydraulic system, lifting hydraulic system and vehicle.The valve body assembly includes lifting main valve, and lifting main valve includes: valve core, the first interface of valve core is communicated with the pressure oil port P of lifting main valve by main oil circuit;Pilot oil circuit, the first end of pilot oil circuit is communicated with main oil circuit;The second end of pilot oil circuit is communicated with the first control end of valve core by first control oil circuit, first electric control valve is arranged on first control oil circuit, first electric control valve has the first default state of disconnecting first control oil circuit, and, the first working state of conducting first control oil circuit, when first control oil circuit is in first working state, valve core is in lifting state.The valve body assembly in the embodiment cancels conventional gas control mode, directly uses electric control liquid mode, can solve the problem that gas circuit is frozen under low temperature in relevant technology and leads to failure, enhances the reliability of system.

The invention discloses a self-adaptive compression method dynamically selected according to a real-time data mode, relates to the field of embedded systems, and dynamically selects an optimal compression strategy according to the real-time characteristic of an address sequence of a program counter (PC) so as to improve the data compression efficiency and the system performance. The algorithm mainly comprises three compression methods of difference value coding, operation length coding and self-adaptive Huffman coding, and intelligent switching is carried out through a compression strategy control module according to modes (repetition, continuity and random) of input data. The principle and the algorithm flow of each compression method are introduced in detail below.

The present invention provides a common-path phase-shift interference device based on single grating multiplexing, comprising: a microscopic imaging module, which performs transmission illumination on a sample; a phase modulation module, which comprises a non-polarizing cube beam splitter, a Ronchi grating, a diffraction beam filter assembly and a phase-type spatial light modulator, wherein the Ronchi grating diffracts a light beam transmitted through the non-polarizing cube beam splitter into multiple orders, and after passing through the diffraction beam filter assembly, the zero-order diffraction beam and the first-order diffraction beam are processed by the phase-type spatial light modulator and return to the Ronchi grating to diffract again to produce multiple orders; an interference imaging module, which receives the light beam reflected by the non-polarizing cube beam splitter and generates an interference image. The present invention significantly reduces the length of the optical structure and the system complexity through a single grating multiplexing design, and simplifies the filtering process in conjunction with the phase-type spatial light modulator, avoids phase shift errors, and significantly improves the imaging speed.

The application provides a satellite configuration and switching method of a multi-band planar phased array antenna, which comprises a satellite platform 1, a flat panel antenna group and a solar cell array 5, the flat panel antenna group comprises multiple flat panel antennas of different frequency bands and is connected to the top plate of the satellite platform 1, the solar cell array 5 is connected to the bottom plate of the satellite platform 1, when in a launching state, the multiple flat panel antennas of different frequency bands are all folded and close to the first side surface, and the solar cell array 5 is folded and close to the second side surface; when in a flying state, the multiple flat panel antennas of different frequency bands are all unfolded until the multiple flat panel antennas of different frequency bands and the top plate of the satellite platform 1 are located in the same plane, and the solar cell array 5 is unfolded until the solar cell array 5 and the bottom plate of the satellite platform 1 are located in the same plane. The satellite configuration has stable structure and can bear large-size and large-mass load, and has high adaptability to satellites with flat panel type effective load in the current sun-synchronous orbit and low-inclination orbit.

This application relates to the field of water treatment technology, and discloses a control method, water treatment device, and medium for a water treatment apparatus. The method includes: in response to a venting command, a controller controls the venting valve to open and controls the water pump to start; after the water pump starts, a negative pressure is generated inside the hot tank; a one-way air inlet valve is configured to automatically open when its positive pressure value is greater than a first threshold, and a one-way air outlet valve is configured to automatically open when its positive pressure value is greater than a second threshold; during the venting process, the controller keeps the venting valve open and the water pump running until a preset venting termination condition is met. This application utilizes the automatic pressure response characteristics of a mechanical one-way valve to achieve adaptive adjustment of negative pressure during the venting process without the need for a pressure sensor and an electrically controlled air inlet valve, simplifying the control logic, reducing hardware costs, and improving venting efficiency and system reliability.