93results about How to "Low reliability" patented technology

The utility model discloses a kind of touch type dispersed node wireless timing system, including mobile terminal, main wireless timing node and at least one slave wireless timing node. Mobile terminal and main node are interacted through first wireless communication link, and main node and slave node are communicated through second wireless communication link. Each node structure is same, and all include shell, touch sensing layer, visual feedback module and integrated control circuit board of main control module. Touch detection and wireless communication function are integrated in main control module. The core of system is that main node main control module is configured as: receiving the configuration signal of mobile terminal, sending control signal to slave node, generating start signal in response to own touch, receiving the state signal of slave node, and the generated timing result data is returned to mobile terminal. The utility model realizes distributed, positionable intuitive timing by hardware structure and signal interaction, low in cost, flexible in deployment, and is suitable for multi-task timing scene.

This application pertains to the technical field of enterprise data analysis and provides a method and system for constructing a risk prevention and control system based on enterprise digital transformation. The method involves first acquiring multiple access request information and access permission information, then generating authentication result information based on this. If the total number of authentication failures exceeds a conventional threshold, risk event information is generated. This application can promptly detect abnormal behavior during monitoring periods, such as a large number of users attempting unauthorized access to the power supply bureau's core system data. It accurately identifies potential risk events such as privilege abuse, brute-force attacks, internal personnel violations, or external penetration attacks. It provides real-time alerts and decision support for security management personnel, facilitating rapid deployment of countermeasures and effectively preventing the leakage of sensitive electricity consumption information, power grid operating parameters, and user privacy data. This significantly enhances the reliability and proactive defense capabilities of the power supply bureau's data security risk prevention and control system.

The application discloses a building engineering monitoring real-time image dynamic acquisition method and system, a terminal and a medium, and relates to the technical field of monitoring control. The technical scheme points are as follows: acquiring engineering task information of a target object; establishing a three-dimensional space model and calibrating task point positions in the three-dimensional space model; selecting image acquisition azimuth information of the task point positions as basic azimuth information; determining a standard azimuth information set corresponding to each task point position relative to the basic azimuth information; acquiring real-time azimuth information of a wearable device in a real-time image acquisition process, and when the real-time azimuth information and the standard azimuth information set are successfully matched, intercepting a real-time image acquired by the real-time azimuth information as a dynamic monitoring image of the corresponding task point position. The application can dynamically acquire real-time images of the corresponding task point positions, effectively reduces the reliability of the acquired images, and reduces resource occupation in the building engineering monitoring process.

Implementations include a fixed part including a cover member, a base coupled to the cover member, and a coil disposed on the base, a moving part including a magnet facing the coil and movable by interaction between the magnet and the coil, a first heat dissipation member disposed on the base, and a second heat dissipation member connected to the first heat dissipation member and exposed from the cover member.

The invention discloses an operator position monitoring method, device and equipment and a medium, and the method comprises the steps: binding pre-obtained target operator information with corresponding business data, and generating a safety constraint of a target operator according to the business data; acquiring multi-source positioning data of the target operator in real time through a positioning terminal worn by the target operator, and inputting the multi-source positioning data into a preset neural network, so that the neural network performs data fusion on the multi-source positioning data to generate a correction position of the target operator; and through a preset reinforcement learning algorithm, according to the correction position and the security constraint, generating an optimal security path, and according to the optimal security path, carrying out monitoring and risk assessment on the current correction position of the target operator. According to the invention, the real-time performance and accuracy of the position monitoring of the operating personnel can be improved.

The utility model provides an explosion-proof type large motor bearing mechanism, and relates to the field of explosion-proof type large motor bearing carrying capacity structures, the explosion-proof type large motor bearing mechanism comprises end covers, an inner cover, an outer cover, a ball bearing, a ball bearing and a shaft, the end covers are fixed at two ends of a motor stator, the ball bearing and the ball bearing are installed on the shaft in a matched mode, and the inner cover is fixed on the outer cover. The inner cover is assembled on the inner side of the ball bearing, and the outer cover is assembled on the outer side of the ball bearing. According to the utility model, the problem of poor bearing capacity of a large-scale ball bearing can be solved by selecting a mode of simultaneously placing two bearings, one ball bearing and another ball bearing on one side of the motor, the axial direction of the ball bearing can prevent the motor from tilting and the axial movement of the rotor, and the ball bearing can effectively solve the problem of radial force of the motor; narrow-series bearings are selected as the ball bearing and the ball bearing respectively, the two sets of shafts are used together in a matched mode, the reliability, the size and the price are all lower than those of a large ball bearing, and therefore the bearing capacity of the explosion-proof type large motor bearing can be smoothly improved.

The invention discloses a method for evaluating the volume change rate of foundry coke, and belongs to the technical field of foundry coke production. The method comprises the following steps: substituting volatile components and caking indexes of coal as fired into a formula Vc = 0.4435 * Vdaf + 0.1995 * G-20.1214 to obtain a predicted value of the volume change rate of foundry coke; according to the method, the complex relation between the as-fired coal index and the foundry coke volume change rate can be accurately captured, the average absolute error can be controlled within 3% through actual verification, and compared with the prior art, the accuracy is improved by 40%-60%; the problem that the volume change rate of foundry coke cannot be accurately predicted is solved.

The application discloses a body state monitoring method and a wristband type emergency monitoring ring, relates to the technical field of biological signal processing, and the body state monitoring method comprises the following steps: emitting red light of a preset first wavelength to the wrist part of a human body, collecting reflected light signals, obtaining a waveform physiological signal, determining a monitoring index of the human body, inputting the monitoring index into a warning model, obtaining a stress state probability of the human body, judging whether a warning is triggered or not based on the stress state probability and a preset probability threshold, and if the warning is triggered, issuing an alarm and sending corresponding body state data to a preset medical platform. The wristband type emergency monitoring ring can be worn on the wrist of a player to realize convenient detection, and through real-time monitoring of physiological data of the human body and a warning model, stress state detection and prediction are realized, so that the body state of the player can be monitored conveniently, in real time and accurately, and the effect of body monitoring of the player is improved.

This application relates to the technical field of industrial data processing, and provides a welding quality assessment method and system based on a welding robot. The method includes: first, in response to a welding start command, rapidly acquiring the gap image information of the target workpiece using an industrial camera; then, in response to a welding completion command, effectively acquiring the weld seam image information of the target workpiece; next, accurately determining the gap baseline information based on the gap image information; and simultaneously, accurately determining the weld seam baseline information based on the weld seam image information; finally, effectively generating welding quality assessment information based on the gap baseline information and the weld seam baseline information. This application, based on laser automatic tracking technology, can accurately determine whether the weld seam deviates from the ideal position, effectively improving the reliability and consistency of the welding process. It not only facilitates the rapid identification and correction of welding defects but also further ensures product quality.

The application discloses a sintering method of a multilayer chip ceramic capacitor, which comprises the following steps: 1) placing a coated nickel net in a nitrogen atmosphere with an oxygen content of 10-100 ppm for oxidation treatment; 2) uniformly stacking and arranging ceramic blanks on the coated nickel net subjected to the oxidation treatment for degassing treatment; 3) transferring the ceramic blanks and the coated nickel net subjected to the degassing treatment as a whole into a tunnel furnace, then introducing nitrogen and hydrogen, and then controlling the oxygen content in the tunnel furnace for three-stage sintering, so as to obtain the multilayer chip ceramic capacitor. The sintering method of the multilayer chip ceramic capacitor does not cause the product performance degradation problem caused by poor sintering atmosphere uniformity, the service life of the coated nickel net is long, the electric performance and reliability of the obtained MLCC are good, and the method is suitable for large-scale popularization and application.

This invention discloses a high-speed rotating bladed disk bird strike simulation test device and test method, comprising: a main shaft, used as a structural carrier; a simulation disk, installed on the main shaft, constructed as a frustum-shaped structure to simulate the geometry of an aero-engine disk, wherein the simulation disk is provided with oblique straight tenons evenly distributed on its circumferential outer edge, the oblique straight tenons forming a preset angle with the axial direction; a simulation blade, including a blade body and a tenon root, the shape of the tenon root matching the oblique straight tenon, so that the simulation blade can be detachably installed into the oblique straight tenon; and an axial limiting component, disposed on the simulation disk, used to axially limit the tenon root from both ends of the simulation disk.

The utility model belongs to the technical field of safety oil drain valves, and discloses a safety oil drain valve which comprises a valve body, a spring is installed in the valve body, a valve element is installed in the valve body, the valve element is inserted into the spring, a spring gasket is installed in the valve body, the spring gasket is connected to the outer surface of the valve element in a sleeved mode, and the spring gasket is pressed at one end of the spring. The outer surface of the valve body is provided with external threads, the valve body is installed on the bearing seat in a threaded fit mode through the external threads and an oil injection hole matched with the external threads, an open hole is formed in the valve body, the valve element is downwards inserted into the spring through the open hole, the open hole is composed of an upper open hole body and a lower open hole body, and the diameter of an inner cavity of the upper open hole body is smaller than that of an inner cavity of the lower open hole body. The utility model not only can judge whether the lubricating oil in the bearing seat is in a full oil state, but also can improve the running performance of the bearing and reduce the resistance, temperature and working reliability, and has the characteristics of simple structure, sensitive response and convenience in installation.

The invention provides an overwater photovoltaic sunlight tracking control method, which is characterized in that two adjacent anchor cables are connected with staggered corresponding anchor piles, and on the projection of a horizontal plane, the adjacent anchor cables are mutually crossed, so that a larger direction angle adjusting range is realized; binding the zero position of the direction angle of the active light following device with the current position of the floating platform; an active light following device is started to track the position of the sun, and the active light following device feeds back a direction angle increment and a pitch angle; calculating the length increment and decrement of each anchor cable according to the direction angle increment; the anchoring device controls the length of the anchor cable in a mode of increasing firstly and then decreasing; in the control process, the draft depth and the anchor cable tension are checked; and the above steps are cyclically operated until the increment of the direction angle fed back by the active light tracking device reaches a preset value, and automatic control over water photovoltaic sunlight tracking is achieved through the above steps. By actively adjusting the length of the anchor cable, the whole floating platform is driven to carry the rotating photovoltaic module array to rotate, sunlight position tracking is achieved, and the generating capacity is integrally improved by 25%-35%.

This utility model discloses a non-deformable and corrosion-resistant cable chain, including an assembly plate. The assembly plate is formed by stamping and has a hinge body. The hinge body includes a hinge piece, and a concave piece is provided on one side of the upper surface of the hinge piece. A side strip is fixedly connected to the left side of the upper surface of the concave piece. This non-deformable and corrosion-resistant cable chain completes the complex structure processing in a single stamping process, significantly improving production efficiency. The precise cooperation between the side strip and the rotating shaft limits the rotation stroke, avoiding structural damage caused by excessive rotation. The arc-shaped through-hole design facilitates lubricant injection, reduces friction, extends service life, reduces assembly steps, lowers production costs, and improves product reliability.

The utility model discloses a high-durability steel structure connecting assembly which comprises a connecting plate, clamping grooves are formed in the two ends of the connecting plate, the clamping grooves are used for being connected with a steel structure in a clamping mode, a plurality of plug pin holes are formed in the clamping grooves, a plurality of plug pins are inserted into the plug pin holes, and the connecting plate and the steel structure are fixed through the plug pins. A clamping assembly is arranged in the clamping groove and used for clamping the steel structure in the clamping groove. According to the utility model, the stability of steel structure connection can be improved.

This heat pump device (1) is provided with: a compressor (30) that compresses a refrigerant; an outdoor heat exchanger (33) that transmits heat of the refrigerant to the air; a fan (5) for blowing air by rotating the blades of the rotary blades; and a controller (20) that applies a voltage to the compressor (30) and the fan (5), the controller (20) being configured so as to determine that the fan (5) is rotated when refrigerant vaporization information, which is information corresponding to the amount of power required to vaporize the refrigerant, is equal to or greater than a reference value when the refrigerant inside the compressor (30) is heated during standby operation of the compressor (30), and that the fan (5) is rotated when refrigerant vaporization information corresponding to the amount of power required to vaporize the refrigerant is equal to or greater than the reference value. A voltage is applied to the fan (5), and the controller (20) is cooled by the fan (5).

The utility model relates to the technical field of axial flow fans, and provides an axial flow fan blade with a self-cleaning function, which comprises a rotating blade, supporting legs are fixedly connected to the circumferential surface of a shell, a connecting block is fixedly connected to the inner side surface of the shell, a sleeve shell is fixedly connected to one end of the connecting block, and a motor is fixedly connected to the inner side surface of the sleeve shell. A rotating shaft is fixedly connected to an output shaft of the motor, rotating blades are fixedly connected to one end of the rotating shaft, a connecting plate is fixedly connected to the side face of the supporting leg, a self-cleaning device is arranged on the circumferential face of the rotating shaft, and the inner side face of the rotating sleeve is fixedly connected to the circumferential face of the rotating shaft; and the circumferential surface of the rotating sleeve is fixedly connected with a connecting rod, one end of the connecting rod is fixedly connected with a rotating shaft, and the circumferential surface of the rotating shaft is fixedly connected with an extension rod. By means of the technical scheme, the problem that in the prior art, an axial flow fan cannot be cleaned is solved.

The invention provides a thin film transistor and a preparation method of a channel layer of the thin film transistor. The thin film transistor channel layer comprises a lower interface layer which is located on the lowermost layer of the IGZO channel layer and has a first gallium-to-indium ratio; a bulk layer located between the lower interface layer and the upper interface layer and having a second gallium-to-indium ratio; the upper interface layer is located on the uppermost layer of the IGZO channel layer and has a third gallium-to-indium ratio, and the second gallium-to-indium ratio is smaller than the first gallium-to-indium ratio and smaller than the third gallium-to-indium ratio. In the invention, the upper interface layer and the lower interface layer which are in contact with the upper dielectric layer and the lower dielectric layer have relatively high gallium-to-indium ratio, and the body layer in the middle position has relatively low gallium-to-indium ratio, so that the interface quality can be stabilized and protected, and the defects, diffusion and reaction at the interface are prevented from causing unstable threshold voltage and reduced reliability; and high mobility and good conductivity can be realized.

The invention discloses a photovoltaic module and a preparation method thereof, and belongs to the technical field of photovoltaic modules. The photovoltaic module comprises a battery piece, an electrode is arranged on the surface of the battery piece, and the electrode comprises a first slurry curing layer; the first slurry curing layer is at least located at the joint of the electrode and the electric connecting piece; and the electric connecting piece is electrically connected with the electrode, the electric connecting piece comprises a base body, a joint layer and a second slurry curing layer, the joint layer covers the surface of the base body, and the second slurry curing layer is arranged on one side, close to the first slurry curing layer, of the joint layer.

The invention provides a mechanical arm self-adaptive grading grabbing control method and system based on visual feedback, and belongs to the technical field of robot control. The method comprises the steps that target position information is obtained through a visual sensor, and contact state information of the tail end of a mechanical arm and a target is obtained through a force sensor; according to the target position information and the contact state information, the current control stage of the mechanical arm is judged, and the control stage comprises the vision dominant stage that the mechanical arm approaches the target but does not make contact with the target, the force dominant stage that the mechanical arm grabs the target and the transition stage from the vision dominant stage to the force dominant stage; generating a first control component and a second control component based on the target position information, and generating a third control component based on the contact state information; according to the current control stage of the mechanical arm, the weights of the first control component, the second control component and the third control component are dynamically distributed and fused to generate a comprehensive control instruction; and the mechanical arm is driven to grab the target according to the comprehensive control instruction, and jumping of the control instruction is avoided.

The application is suitable for the technical field of back contact battery, and provides a back contact battery, a battery assembly and a photovoltaic system. In the back contact battery, a first test part and a second test part for contacting probes of different polarities of a testing device are arranged on a silicon substrate. The first test part is in communication with at least part of the second fine grid through a first bus grid line, and the second test part is in communication with at least part of the first fine grid through a second bus grid line. The area of at least one first test part is smaller than the area of a first pad, and the area of at least one second test part is also smaller than the area of the first pad. Thus, due to the arrangement of the first test part and the second test part, the positive and negative probes of the testing device can form stable contact with the first test part and the second test part, respectively.

The application relates to a horizontal well section multi-cluster fracturing temporary plugging effect evaluation method, which comprises the following steps: acquiring construction data in real time, acquiring a temporary plugging agent in-place pressure increase value according to the construction data; acquiring construction pressures before and after a temporary plugging agent injection opportunity, wherein the sand concentration is zero and the discharge capacity is equal, and the difference is obtained to obtain a same discharge capacity pressure increase value; acquiring construction data points before and after the temporary plugging agent injection opportunity, wherein the sand concentration is equal and the discharge capacity is equal, and the curve superposition is carried out to calculate the percentage of construction data points with positive pressure difference before and after the temporary plugging agent injection opportunity, and the positive pressure difference ratio is obtained; determining temporary plugging effective time temporary plugging agent in-place pressure increase index value, same discharge capacity pressure increase index value and positive pressure difference ratio index value according to mechanical differences among clusters in a reservoir section; comparing the temporary plugging agent in-place pressure increase value, the same discharge capacity pressure increase value and the positive pressure difference ratio with corresponding index values to obtain three discrimination results, introducing a weight coefficient to integrate the three discrimination results, and determining whether the temporary plugging is effective in real time.

The invention relates to the technical field of processor soft error fault analysis, and discloses a processor soft error fault mode analysis system which comprises a fault generation module, a fault injection module, a data receiving module, a data processing module, a result display module and a controlled operation module. The fault generation module, the fault injection module, the data receiving module, the data processing module, the result display module and the controlled operation module work cooperatively to jointly establish a fault mode-system response-task influence association model; the system surpasses traditional single-point fault injection, provides highly configurable and reproducible fault excitation, simulates soft errors of a processor caused by space radiation, supports in-situ test capability of multi-physics field coupling, realizes application-oriented closed-loop correlation modeling, supports systematic test and deep analysis, and has a wide application prospect. And a full-digital efficient analysis assembly line is constructed, so that the evaluation efficiency and the iteration speed are greatly improved.

The application discloses a QoS-aware multi-path routing control method based on LSTM prediction. The method firstly constructs a link QoS state sequence, wherein the link QoS state at least includes a link delay, a link packet loss rate and a link available bandwidth; then, a long short-term memory network (LSTM) is used to predict the link state in a future time window; then, according to the quality of service (QoS) requirement of different service flows, a delay weight, a reliability weight and an energy consumption weight in a path cost function are dynamically configured; further, K candidate paths meeting the constraints are searched based on the predicted cost function, and a feasible path set meeting the QoS requirement of the service is screened out from the K candidate paths; finally, a heuristic traffic distribution strategy based on the reciprocal of the path prediction cost is adopted, and the service flow is proportionally distributed to multiple paths for parallel transmission.

The invention discloses a composite film flexible transistor and a preparation method thereof, and relates to the technical field of flexible semiconductor devices. The composite film flexible transistor comprises a flexible substrate, a gate electrode, a gate dielectric layer, a mixed channel layer, a source electrode and a drain electrode which are stacked in sequence, the mixed channel layer is formed through double-source co-evaporation of elemental Te under a controlled low-temperature condition, and a continuous amorphous skeleton phase is formed. Te is dispersed and embedded in a supercooled liquid state and spontaneously crystallizes in a natural temperature returning process to form an interconnected conductive network. The content of Te and Te in the mixed channel layer is accurately regulated and controlled through the evaporation rate, and effective crystallization and carrier transport of Te can be realized without high-temperature annealing. The flexible transistor provided by the invention shows stable p-type enhanced electrical characteristics under low working voltage, and has high mobility, high switch ratio and excellent bending reliability; and meanwhile, a full-low-temperature process is adopted in the preparation process, so that thermal damage of high temperature to the flexible substrate is avoided.

The invention discloses a production method of monocrystal lithium manganese aluminate, which belongs to the technical field of preparation of lithium ion battery cathode materials, and comprises the following steps: taking manganous-manganic oxide, lithium carbonate and an aluminum-containing raw material, with the molar ratio of lithium carbonate to manganous-manganic oxide being Li: Mn being 0.50-0.55, the molar ratio of lithium carbonate to the aluminum-containing raw material being Li: Al being 1.00-1.05, and at the same time, carrying out a reaction for 2-3 hours to obtain the monocrystal lithium manganese aluminate. Adding a doping agent accounting for 0.02%-2.0% of the theoretical product mass, and mixing to obtain a uniform raw material; sintering the raw materials in an oxygen-enriched atmosphere at 800-950 DEG C for 8-16 hours to obtain a lithium manganese aluminate semi-finished product; crushing and crushing the lithium manganese aluminate semi-finished product to obtain a crushed product; through the synergistic effect of aluminum element doping and oxygen-enriched high-temperature sintering, the structural stability of the material is fundamentally improved.

The utility model discloses a kind of mechanical dryer combination structure for new energy vehicle, including the combination of mechanical dryer and air pressure switch;Mechanical dryer includes control interface;Air pressure switch is arranged at the control interface of mechanical dryer;Wherein air pressure switch can be fed back air pressure data information to VCU by control interface, and then VCU controls the start or stop of the electric air compressor of whole car according to air pressure data information.The utility model discloses the mechanical dryer combination structure for new energy vehicle, can be combined by air pressure switch and mechanical dryer, realize the effective control of VCU to the start-stop of electric air compressor, effectively solve the problem that electric air compressor is always in continuous working state in prior art.

The application provides a smoke alarm control method and device, electronic equipment and a storage medium. The method comprises the following steps: performing smoke detection based on a first air path state to obtain a first smoke detection result, wherein the first air path state is used to represent a state in which gas enters the inside of a smoke alarm through a first number of shell openings; in response to the first smoke detection result being that there is suspected smoke, performing smoke detection based on a second air path state to obtain a second smoke detection result, wherein the second air path state is used to represent a state in which gas enters the inside of the smoke alarm through a second number of shell openings, and the first number is less than the second number; and in response to the second smoke detection result being that there is fire smoke, performing smoke alarm. The protection capability of the smoke alarm can be improved.

The invention relates to a graphene / Cu NPs / silicon heterojunction-based Schottky solar cell preparation method, which relates to the photovoltaic technical field, and comprises the following steps: 1) pre-treating a silicon wafer; 2) evaporating a copper nano film on the surface of the pretreated silicon wafer; 3) depositing a graphene film on the copper nano film; 4) carrying out annealing treatment on the heterojunction; 5) evaporating an electrode layer on the back surface of the silicon wafer; and 6) evaporating an electrode layer on the front surface of the silicon wafer. According to the preparation method of the Schottky solar cell based on the graphene / Cu NPs / silicon heterojunction, the photoelectric conversion efficiency of the Schottky solar cell is remarkably improved to 15% or above, meanwhile, the material cost is reduced to 1 / 100 of that of a traditional precious metal system, and 2-5 nano copper nanoparticles formed after annealing have triple functions in the cell at the same time, so that the photoelectric conversion efficiency of the Schottky solar cell is greatly improved. As a back electrode material, the material cooperates with a silver-aluminum electrode to provide a low-resistance conductive path, the contact resistance is lower than 0.1 ohm square centimeter, an efficient Schottky junction is formed with a silicon substrate interface to enhance light capture, and the light absorption efficiency is improved by 30%.