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Electric meter intelligent communication detection method and system based on power line carrier
PendingCN121864128AImprove status assessment accuracyGuaranteed real-timePower distribution line transmissionUtility meters data arrangementsCarrier signalData acquisition
The invention discloses an electric meter intelligent communication detection method and system based on a power line carrier, and relates to the technical field of electric meter communication detection, and the method comprises the steps: collecting the communication data of an electric meter at different time periods, inputting an electric meter communication state dynamic sensing model, analyzing features, and obtaining an initial evaluation result; channel characteristic parameters are calculated by using a carrier channel characteristic dynamic estimation algorithm based on the result, and the channel characteristic parameters are input into a power carrier signal demodulation optimization algorithm to generate an optimized demodulation scheme; signals are demodulated and data are verified according to the scheme, related results are uploaded to an electricity meter communication performance optimization management platform, and the platform evaluates performance and generates optimization suggestions and fault early warning. The system comprises a data acquisition unit, a state analysis unit, a channel calculation unit, a demodulation optimization unit, a data processing unit and a performance management unit which operate cooperatively. The communication state can be dynamically sensed, the channel characteristics can be accurately estimated, the demodulation process can be optimized, the integrated management of the communication performance can be realized, and the accuracy and reliability of the electric meter communication can be improved.
Owner:SHENZHEN XUNZHI WULIAN TECH CO LTD
Intelligent wide-range pressure measurement system and method for aero-engine
PendingCN121804747ASolve the limitations of high-precision measurementavoid lossGas-turbine engine testingFluid pressure measurementAviationMultiple sensor
The invention belongs to the field of aerospace sensors, and discloses an intelligent wide-range pressure measurement system and method for an aero-engine. The system comprises a pressure acquisition module which comprises at least two pressure sensors with different measuring ranges and overlapped measuring intervals, and an electromagnetic valve group used for switching gas circuits of the pressure sensors; the intelligent control module communicates with an engine FADEC to obtain real-time working condition parameters, predicts the pressure change trend in combination with a pre-stored pneumatic model, switches gas circuits in advance before the pressure reaches a range critical point, triggers a special collection mode to lock an adaptive sensor under a transient working condition, and collects data at the highest sampling rate. The measurement method comprises the steps of working condition parameter acquisition, pressure trend prediction, advanced range switching and self-diagnosis calibration, and through multi-sensor data comparison under environment pressure or stable working conditions, temperature drift errors are dynamically compensated, and faults of the sensors and transmission pipelines are accurately diagnosed. According to the scheme, the problems of switching delay, data distortion, sensor precision drift and difficulty in fault discovery of a traditional system are effectively solved, high precision and stability of full-range pressure measurement are guaranteed, and reliable support is provided for precise regulation and control and flight safety of an aero-engine.
Owner:CHINA ELECTRONICS TECH GRP NO 26 RES INST
Anti-twisting structure of fire hose
ActiveCN224071043Unot easily twistedavoid distortionFire rescueStructural engineeringMechanical engineering
The utility model discloses a fire hose anti-twist structure, including base pedal and take-up mechanism, take-up mechanism includes rotary column, insert fixed column, L-shaped support plate, polish rod stud shaft, sleeve liner, pressure band plate and rotary handle, the plate body surface of base pedal is symmetrically welded with branch pipe, and the upper part of branch pipe body is rotatingly connected with rotary column, the base pedal is installed with take-up mechanism, and the rotary column is fixed on the base pedal. According to the hose winding mechanism, a sleeve lining cylinder is matched with a hose pressing plate to clamp the folded fire hose, a polished rod stud shaft is matched at an L-shaped supporting plate to conduct rotating winding, after the fire hose is folded and wound in a double-winding type winding mode, the fire hose wound into the double-winding type is not prone to being twisted when thrown out for use, the fire hose is effectively prevented from being twisted in the use process, and the service life of the fire hose is prolonged. The winding convenience of the fire hose is effectively improved, even if the fire hose is twisted due to friction in use, the fire hose can be manually straightened and used by holding the sleeve lining cylinder and the hose pressing plate to clamp and stroke the fire hose, and the fire hose is effectively prevented from being twisted.
Owner:HUBEI XINGZHONG FIRE TECHNOLOGY CO LTD
Dialysis tubing securement device
The utility model discloses a kind of dialysis pipeline fixing devices, it is related to medical instrument technical field.Dialysis pipeline fixing device, including box body, box cover, limiting component, clamping component.The first recess is opened in box body;The side of box cover is hinged with the side of box body, and the second recess is equipped on box cover;The box cover flip cover is equipped on the box body, and first recess and second recess are connected with each other to form installation channel;Limiting component is arranged on box body, and limiting component is used to limit the relative position of box cover when being covered on box body with box body;Clamping component is installed on box body;Dialysis pipeline fixing device provided by the utility model is connected by using limiting component to make box body and box cover cooperate, finally fixed in patient's clothes or bed sheet by using clamping component, when providing support for dialysis pipeline, it is more stable and reliable, while avoiding to cause misclip or lead to pipeline occlusion to dialysis pipeline, ensure the reliability of patient's hemodialysis treatment.
Owner:BEIJING JISHUITAN HOSPITAL
A condenser tube sheet sealing detection device
This utility model provides a condenser tube sheet sealing testing device, relating to the field of non-destructive testing technology. It includes a movable plate, a housing, and a rotating component. Four sets of casters are installed at the lower end of the movable plate, and a fixing component is installed at the upper rear side of the movable plate. The fixing component has a circular hole on its inner side, and a gas storage tank is fitted inside the circular hole. A movable component is fitted through a groove on a partition plate. The movable component has a circular hole at its center end, through which the front end of a thin flexible tube passes. This design utilizes the circular hole of the movable component to provide support and positioning for the thin flexible tube, preventing excessive bending, twisting, or compression during use, thus extending the service life of the thin flexible tube. It also ensures the normal working condition of the thin flexible tube and prevents damage to the tube from affecting the test results. This solves the problem of excessive bending and twisting of the gas tube during use in existing condenser tube sheet sealing testing devices.
Owner:CHANGSHAN YONGCHENG REFRIGERATION EQUIP CO LTD
Diffeomorphism-based cross-modality brain region image registration method
ActiveCN117132628Bimprove accuracyavoid disadvantagesImage enhancementImage analysisFluorescent imagingNuclear medicine
This invention relates to the field of biomedical image processing technology, and particularly to a cross-modal brain region image registration method based on differential homeomorphism. The method includes: registering the original T1-w image with an NMT-averaged standard template; registering the acquired cell architecture imaging and fluorescence imaging with the registered T1-w image; downsampling the fluorescence imaging and cell architecture imaging respectively; performing intensity correction; smoothing the cell architecture imaging / fluorescence imaging; re-downsampling the smoothed cell architecture imaging / fluorescence imaging; registering the T1-w image to the intensity-corrected cell architecture imaging / fluorescence imaging through affine transformation to obtain a deformation field; registering the T1-w D99 brain atlas to the cell architecture imaging / fluorescence imaging using the deformation field; and sampling the D99 brain atlas from the cell architecture imaging / fluorescence imaging to complete the registration. The advantages are: stronger robustness, higher accuracy, and no reliance on subsequent manual correction.
Owner:HAINAN UNIV +1
A method and system for combined power generation based on multi-temperature zone waste heat recovery
ActiveCN121952693BSolve the problem of dynamic temperature controlavoid delayFuel cell heat exchangeEngine componentsThermodynamicsFuel cells
The application discloses a combined power generation method and system based on multi-temperature-zone waste heat recovery. The combined power generation method comprises the following steps: acquiring the cell power of a fuel cell and the power generation power of a hydrogen generator, inputting hydrogen into a multi-stage power generation device to drive the fuel cell to perform a power generation operation, obtaining output first electric energy, first waste heat gas, first heat energy and unreacted hydrogen; inputting the unreacted hydrogen into the hydrogen generator to drive the hydrogen generator to perform a power generation operation according to the hydrogen and the unreacted hydrogen, obtaining second electric energy and second waste heat gas output by the hydrogen generator; acquiring the system temperature of the multi-stage power generation device when performing the power generation operation, and constructing an exhaust passage of an organic Rankine cycle generator to the multi-stage power generation device; driving the organic Rankine cycle generator to perform a power generation operation according to the exhaust passage, the first waste heat gas and the second waste heat gas, and obtaining third electric energy and second heat energy output by the organic Rankine cycle generator, so that the use efficiency of energy is improved.
Owner:STATE GRID ZHEJIANG ELECTRIC POWER CO LTD
Intelligent cleaning method for multi-source heterogeneous big data
This invention relates to the field of data processing and discloses an intelligent cleaning method for multi-source heterogeneous big data. The method includes: collecting structured, semi-structured, and unstructured data from multiple source systems and parsing them to obtain raw data units; performing standard concept mapping on the raw data units and writing source identifiers, extraction method identifiers, collection time identifiers, upstream task identifiers, and derived link identifiers to generate data units with lineage identifiers; forming candidate association clusters based on stability identifiers, contextual features, and temporal adjacency relationships; constructing a conflict evidence graph within the candidate association clusters and determining edge weights by combining source credibility, time freshness, lineage propagation depth, and source drift coefficient; locating conflict-connected subgraphs and determining the minimum repair boundary by combining the data lineage graph; generating multiple candidate repair strategies and arbitrating them.
Owner:BANGZHUHUI (SHANGHAI) TECHNOLOGY CO LTD
Carbon dioxide collection device for atmospheric monitoring
This invention relates to the field of atmospheric monitoring technology, and more particularly to a carbon dioxide collection device for atmospheric monitoring, comprising: a support tube; a fixed bracket, conical in shape and fixed to the top of the support tube; a housing, fixed to the upper surface of the fixed bracket, for accommodating a filter assembly and forming a sampling airflow channel; a wind-adaptive air intake assembly, rotatably connected to the upper end of the housing, for automatically turning the air inlet to the leeward side; an air extraction power assembly, installed inside the fixed bracket, for forming a directional airflow inside the device; and a negative pressure storage tank, installed on the bottom plate of the support tube. This invention uses a vertical wing to drive the air intake square tube to automatically turn the air inlet to the leeward side, effectively avoiding direct wind and sand; the windbreak frame, driven by wind force, moves a limiting block to lock the fixing ring, stably locking the air intake square tube; this double windproof design avoids wind and sand intrusion, prevents airflow swaying, and ensures stable and reliable sampling.
Owner:ZHONGYU (ZHEJIANG) ENVIRONMENTAL MONITORING CO LTD
A high-temperature resistant structural glass material, its preparation method and application
PendingCN122079480AIncreased softening point temperatureAppropriate coefficient of expansionGlass shaping apparatusBundled fibre light guideAluminium hydroxideCerium(IV) oxide
This invention belongs to the field of glass technology and relates to a high-temperature resistant structural glass material, its preparation method, and its applications. The glass is composed of the following components by mass percentage: 60%-70% silicon dioxide, 5.5%-11% boric acid, 0.1%-5% aluminum hydroxide, 0%-3% potassium nitrate, 5.5%-13% potassium carbonate, 0%-12% sodium carbonate, 0.1%-4% calcium carbonate, 0%-2% calcium fluoride, 0%-1% lithium carbonate, 0%-2% basic magnesium carbonate, 0.1%-1% titanium dioxide, 0%-2% zirconium dioxide, and 0%-1% cerium dioxide; the total mass percentage of potassium nitrate, potassium carbonate, sodium carbonate, and lithium carbonate does not exceed 22%. This structural glass possesses a high softening temperature, a suitable coefficient of thermal expansion, high-temperature resistance, thermal shock resistance, and processing performance, making it suitable as a structural material for optoelectronic devices.
Owner:CNBM PHOTONICS TECH CO LTD
Electric energy-frequency modulation clearing method and system considering energy state flexibility of energy storage
PendingCN122600095AIncreased safety marginFree up feasible solution space
The application discloses an electric energy-frequency modulation out-clearing method and system considering energy storage energy state elasticity, comprising the following steps: acquiring power grid topology, load prediction data and power grid operation constraint parameters, receiving the frequency modulation market declaration information and the electric energy market declaration information submitted by market subjects; determining the winning frequency modulation capacity and the frequency modulation mileage out-clearing price of each market subject according to a preset frequency modulation out-clearing rule; taking the frequency modulation market out-clearing result as a boundary condition, constructing an electric energy market out-clearing model considering energy storage energy state elasticity, setting the state of energy (SOE) of the energy storage operator at the end time as an optimization variable, and introducing the SOE adjustment cost curve into the objective function; solving the model to determine the day-ahead time node marginal price, the day-ahead time generation power of the generation unit operator, the day-ahead time charging and discharging power of the energy storage operator and the SOE at the end time, and converting the same into a power grid dispatching instruction; and performing frequency modulation market settlement and electric energy market settlement according to the out-clearing result.
Owner:ELECTRIC POWER RES INST STATE GRID SHANXI ELECTRIC POWER +1
Electric wire winding device for electric wire production
The utility model relates to the technical field of wire winding, in particular to a wire winding device for wire production, which comprises a support, a reel is mounted on the inner side of the top surface of the support, a screw rod is mounted on the front side of the top surface of the support, and a screw sleeve is arranged on the outer side of the middle of the screw rod; a cleaning structure is installed on the screw sleeve, the cleaning structure comprises a fixing frame, the fixing frame is fixedly installed on the top face of the screw sleeve, an inserting hole is formed in the surface of the fixing frame, a rotating disc is movably installed on the inner side of the top face of the fixing frame through a rotating shaft, and an inserting groove and an installing groove are formed in the surface of the rotating disc; and a rubber sheet is clamped on the inner side of the mounting groove. The rubber sheet is extruded and fixed on the inner side of the mounting groove through the threaded connection of the threaded sleeve and the mounting groove, and when the rubber sheet is aged and damaged, the rubber sheet can be disassembled, assembled and replaced by screwing off the threaded sleeve, so that the replacement cost is reduced, and the use experience is improved.
Owner:HUAIAN BLUE SHARK NEW ENERGY TECHNOLOGY CO LTD
A special support for atmospheric sampler
This utility model discloses a special bracket for an atmospheric sampler, relating to the technical field of atmospheric sampler brackets. The utility model includes a sampler body and a support mechanism. A rod is fixedly installed at the bottom of the sampler body, and several limiting blocks are fixedly installed on the outer wall of the rod. Each limiting block has an insertion hole at its bottom. A support rod is fixedly installed at the top of the support mechanism, and a connecting box is fixedly installed at the top of the support rod. This utility model restricts the vertical movement of the limiting blocks by their position within the cavity, and restricts the rotational movement of the limiting blocks by the insertion of relevant parts of an elastic snap-fit component into the insertion hole. This completes the installation between the sampler body and the placement box. Furthermore, this process eliminates the need for tools, avoiding the strong reliance on tools in traditional installations and improving installation efficiency.
Owner:KAIMENG TESTING TECH CO LTD
Multifunctional measuring tool for building detection
ActiveCN224202319UAvoid deformation damageavoid distortionRulers for direct readingAngles/tapers measurement gaugesGear wheelConstruction engineering
Owner:NANJING XINSHENG CONSTR ENG QUALITY INSPECTION CO LTD
Positive electrode active material and preparation method thereof, positive electrode and lithium ion battery
PendingCN121839639AImprove structural stabilityavoid distortionCell electrodesSecondary cellsElectrolytic agentElectrical battery
The invention relates to a positive electrode active material and a preparation method thereof, a positive electrode and a lithium ion battery. The positive electrode active material comprises lithium manganate particles and a sodium phytate layer coating the surfaces of the lithium manganate particles. According to the technical scheme, in the positive electrode active material, the sodium phytate layer serves as a coating layer, and six phosphate groups in molecules of the sodium phytate layer and manganese ions dissolved out of lithium manganate particles can form a stable complex, so that the dissolved-out manganese ions are efficiently captured and prevented from being further migrated into an electrolyte to damage the performance of a battery; meanwhile, the sodium phytate layer forms a layer of compact physical barrier on the surfaces of the lithium manganate particles, so that direct contact between the lithium manganate particles and an electrolyte can be effectively blocked, and dissolution of manganese ions is inhibited from the source. Through a synergistic effect of a chelation effect and a physical barrier effect of the sodium phytate layer, the dissolution amount of manganese ions can be remarkably reduced, and the crystal structure of lithium manganate particles is prevented from being distorted, so that the structural stability of the positive electrode active material is improved.
Owner:SUZHOU QINGTAO NEW ENERGY TECH CO LTD
A method and system for extracting line spectrum of time-frequency spectrum of underwater acoustic signal
PendingCN122451569ASolve the scarcityAccurately depict blurred boundariesTime domainFrequency spectrum
The application discloses a water acoustic signal time-frequency spectrum line spectrum extraction method and system, and belongs to the technical field of signal processing. A noisy time domain signal is generated through simulation, and a mask label of a time-frequency spectrum of the noisy time domain signal belonging to a line spectrum is generated through a soft threshold function; a denoising model is trained according to the time-frequency spectrum and the mask label; a target water acoustic signal is acquired, the time-frequency spectrum of the target water acoustic signal is input into the denoising model, and a mask label corresponding to the time-frequency spectrum input is output through inference; the time-frequency spectrum of the denoised target water acoustic signal is acquired according to the mask label and the time-frequency spectrum; an initial candidate point set of the time-frequency spectrum of the denoised target water acoustic signal is acquired, and an initial candidate point of a current frame time-frequency spectrum in the initial candidate point set is acquired; a correlation cost matrix is constructed, the initial candidate point and a trajectory are correlated and matched with the minimum difference as a target, and a line spectrum of the trajectory and the candidate point dynamic correlation is acquired. The method can balance denoising fidelity, detection accuracy and real-time performance.
Owner:UNIV OF ELECTRONICS SCI & TECH OF CHINA +1
Quasi-single-mode circular waveguide conical horn antenna, radar and communication device
PendingCN121965147Areduce lossreduce gainWaveguide hornsAntenna supports/mountingsRadarCircular cone
The invention discloses a quasi-single-mode circular waveguide conical horn antenna, a radar and a communication device. The quasi-single-mode circular waveguide conical horn antenna comprises a circular waveguide section and a conical horn section. Conductor loss is reduced by remarkably increasing the diameter of the circular waveguide, and axial periodic annular grooves are formed in the inner wall of the circular waveguide to form a spatial mode filter and a selective attenuation high-order mode, so that high radiation efficiency and high mode purity are realized at the same time in a millimeter wave frequency band. And the conical horn section adopts an index profile to realize high-directionality radiation. The antenna structure effectively solves the technical problems of large loss and impure mode in a millimeter wave high-frequency band in the traditional design.
Owner:中仪知联(无锡)工业自动化技术有限公司
Low-orbit satellite communication Doppler nonlinearity effect simulation device
PendingCN122092987Abreak through the limitationsGuaranteed continuityTransmission monitoringRadio transmissionTime domainCarrier signal
This invention discloses a device for simulating the Doppler nonlinear effect in low-Earth orbit (LEO) satellite communication, comprising: a user interaction unit for reconstructing the three-dimensional propagation environment between the LEO satellite and the ground terminal based on set communication scenario parameters and calculating the Doppler nonlinear factor; a baseband Doppler nonlinear simulation unit for performing non-uniform resampling of the digital baseband signal based on the Doppler nonlinear factor to obtain a time-domain scaled signal; a carrier Doppler compensation unit for compensating the time-domain scaled signal based on the Doppler nonlinear factor and the carrier frequency to obtain a compensation signal with applied Doppler nonlinear effect; a digital-to-analog converter unit for converting the compensation signal with applied Doppler nonlinear effect into a baseband analog signal with applied Doppler nonlinear effect; and an up-conversion converter unit for up-converting the baseband analog signal with applied Doppler nonlinear effect to a radio frequency (RF) frequency to obtain an LEO satellite RF signal with applied Doppler nonlinear effect.
Owner:NANJING UNIV OF AERONAUTICS & ASTRONAUTICS +1
Extremely simple door frame with flat outside and opening inside
ActiveCN224078955UIncrease the cross-sectional areaincrease wind pressureNoise insulation doors/windowsWindow/door framesSupporting systemJamb
The utility model discloses an outward-flat inward-opening type extremely simple door frame, which relates to the technical field of door frames and comprises a main sleeve and an auxiliary sleeve, an installation clamping groove is arranged on the rear side of the main sleeve, the auxiliary sleeve is fixedly arranged on the rear side of the main sleeve through the installation clamping groove, a first cavity and a second cavity are arranged inside the main sleeve, and the first cavity and the second cavity are communicated with each other. A bolt groove is formed in the second cavity, the cross section of the main sleeve is of a T-shaped structure, and a sealing strip is fixedly installed on one side of the back face of the main sleeve. According to the characteristic that the door is flat outside and open inside, the first cavity and the second cavity are arranged to increase the cross section area of the sectional material, a good supporting system is formed, and the deformation risk caused by long-term opening and closing can be resisted; the wall thickness of the main sleeve and the wall thickness of the auxiliary sleeve range from 1 mm to 3 mm. The millimeter-level thickness breaks through the visual decorous feeling of a traditional door frame, the ultra-narrow frame is achieved through the precision machining technology, the space permeability can be improved to the maximum degree, and the ultra-narrow frame is particularly suitable for modern simple and light luxury style decoration.
Owner:ZHEJIANG OUYANATE WOOD IND CO LTD
Spinning preparation machine for processing fiber bundles
ActiveCN118140018BMeasured values have no effectavoid distortionSafety devices for fibre treatmentFibre mixingFiber bundleSupport point
A spinning preparation machine (1; 100; 200) for processing fiber bundles (2), the spinning preparation machine having: a frame (19); a fiber bundle reservoir (4) fixed on the frame (19), the fiber bundle reservoir being fluidly connected to a fiber bundle inlet (9) via an inlet (8) and fluidly connected to a fiber bundle outlet (18) via an outlet (17); and a weighing device (26) disposed below the fiber bundle reservoir (4) for measuring the filling state of the fiber bundle reservoir (4) by gravimetric method, characterized in that the spinning preparation machine (1; 100; 200) has a separation device (21) having at least three support points (24) for erection on a fixed base plate (3), wherein the frame (19) and the separation device (21) are structurally separated from each other, and wherein the fiber bundle inlet (9) is disposed on the separation device (21).
Owner:TRUETZSCHLER GRP SE
A provincial meteorological and administrative collaborative wind speed prediction method based on dynamic federated learning
PendingCN122260538AOvercome difficulties that are difficult to advancebreak out
The application provides a provincial meteorological and administrative collaborative wind speed prediction method based on dynamic federal learning, relates to the cross technical field of artificial intelligence and energy meteorology, S1, basic data of N meteorological monitoring stations in a province is acquired, is divided into M initial subgraphs according to the administrative boundary of a prefecture-level city and is allocated an edge server, each collaborative subgraph pair is determined according to the Pearson correlation coefficient of the wind speed sequence of the station, the time sequence data deviation of the synchronized subgraph is synchronized through a dynamic time warping algorithm after every 3 rounds of federal iteration, and the subgraph data after synchronization is output. Through an endogenous decision and optimization framework, three links of dynamic coordination of cross-domain collaboration, local learning and gradient transmission are coordinated, and finally a global optimal provincial meteorological and administrative collaborative wind speed prediction method based on dynamic federal learning is achieved among multiple targets such as prediction accuracy, convergence speed and communication cost.
Owner:SHANGHAI INVESTIGATION DESIGN & RES INST CO LTD +1
A digital human muscle model pose generation method and device
The application relates to the technical field of digital human body models, in particular to a digital human body muscle model posture generation method and device. The method comprises the following steps: obtaining a tomographic image of an initial posture of a human body by using high-precision CT, and inversely modeling a geometric model of human body bones and muscles according to the tomographic image; calculating a first motion influence weight of each muscle node attached to a bone node according to each muscle node and the bone node; calculating a second motion influence weight of each muscle node according to the influence of adjacent muscle nodes on each muscle node; calculating a comprehensive weight of each muscle node according to the first motion influence weight and the second motion influence weight; and calculating a Laplace coordinate of a next moment of a current muscle node according to the comprehensive weight of the current muscle node, the position of the current muscle node and adjacent muscle nodes. The application generates a high-fidelity muscle geometric model by using a Laplace mesh deformation constraint technology.
Owner:CATARC AUTOMOTIVE TEST CENT TIANJIN CO LTD
A robot volume self-adaptive adjusting method, device, equipment and medium
This invention relates to the field of embodied intelligence, specifically disclosing a method, apparatus, device, and medium for adaptive volume adjustment of a robot. The method includes: acquiring environmental noise, extracting and separating robot self-noise from it to obtain target noise; determining the noise level based on the target noise; if it is a first noise level, setting the target volume as the sum of the current volume and a first fixed volume compensation amount; if it is a second noise level, setting the target volume as the sum of the current volume and a nonlinear volume compensation amount, wherein the nonlinear volume compensation amount is determined based on a dynamic adjustment coefficient negatively correlated with the intensity of the target noise; if it is a third noise level, setting the target volume as the smaller value between the sum of the current volume and the second fixed volume compensation amount and a preset maximum volume threshold; and adjusting the robot's output volume to the target volume. Compared with existing technologies, this invention avoids misjudgments caused by robot self-noise, accurately adapts volume control to the actual environment, and improves the user experience.
Owner:SHANGHAI HUAZHIJIAN TECHNOLOGY CO LTD
Broadband gain positive slope amplitude-phase control multifunctional chip for T / R assembly
PendingCN121939954Areduce gainReduce system reliabilityGain controlPhase shifting networksTransceiverControl signal
The invention provides a broadband gain positive slope amplitude-phase control multifunctional chip for a T / R assembly, which relates to the technical field of radio frequency integrated circuits and comprises a receiving channel, a transmitting channel, an equalization circuit, a numerical control attenuator, a numerical control phase shifter, a transmitting-receiving change-over switch module and a parallel control module. The parallel control module is used for outputting parallel control signals to the numerical control attenuator, the numerical control phase shifter and the transceiving change-over switch module; the equalization circuit is respectively connected with the receiving channel and the transmitting channel through the transmitting-receiving change-over switch module, so that a signal path of the receiving channel and a signal path of the transmitting channel multiplex the equalization circuit, the numerical control attenuator and the numerical control phase shifter; and the equalization circuit is of an on-chip integrated structure and is used for adjusting the gain of the receiving channel and the gain of the transmitting channel to present a positive slope characteristic relative to the frequency in a wide frequency band so as to compensate the frequency attenuation of an external device.
Owner:SICHUAN YIFENG ELECTRONICS SCI & TECH CO LTD
Field self-cleaning monitoring rod
ActiveCN224189249Uclean up fullyavoid distortionMeasurement apparatus componentsCleaning using toolsAgricultural scienceAgricultural engineering
The utility model relates to the technical field of agricultural monitoring equipment, and discloses a field self-cleaning monitoring rod, which comprises a rod body and a detection module arranged in the rod body, and is characterized in that a plurality of through holes for sensor probes of the detection module to extend out are formed in the side surface of the rod body; a brush cylinder capable of rotating around the axis of the rod body is sleeved outside the rod body, cleaning brushes are uniformly distributed on the inner wall of the brush cylinder, and a motor for driving the brush cylinder to rotate is arranged inside the rod body; through the rotary linkage design of the rod body and the brush cylinder, the cleaning brush on the inner wall of the brush cylinder is used for periodically and automatically cleaning the sensor probe, and monitoring data distortion caused by dust accumulation and water mist attachment is effectively prevented; besides, the transmission structure of the brush cylinder is matched with the quantitative track, so that the brush cylinder can more fully clean each driver probe, the long-term working reliability of the monitoring rod in a complex farmland environment is remarkably improved, and the manual maintenance requirement is reduced.
Owner:NINGJIN COUNTY BAODIAN TOWN PEOPLES GOVERNMENT
A battery box with a quick release structure and a closestool thereof
This utility model discloses a battery box with a quick-release structure and its intelligent toilet. Key technical features include a battery box and a battery compartment detachably mounted on the battery box. The battery box has first locking portions on both sides, and the battery compartment has an installation cavity. Two linkage rods are movably mounted within the installation cavity corresponding to the first locking portions on both sides. Each linkage rod has a second locking portion that engages with the first locking portion. The linkage rods can move between a locked position and a released position. When the linkage rod is in the locked position, the second locking portion engages with the first locking portion; when the linkage rod is in the released position, the second locking portion disengages from the first locking portion. A linkage component is provided between the two linkage rods to ensure that driving one linkage rod causes the other linkage rod to move synchronously. This utility model, by setting a linkage component, ensures that the locked / released states of the linkage rods on both sides of the battery compartment are completely consistent, significantly improving the reliability of disassembly and assembly, making operation smoother, and optimizing the user experience.
Owner:XIAMEN R&T PLUMBING TECH
Energy storage device and power utilization system
ActiveCN122091937Aavoid excessive bendingavoid offsetCell component detailsElectrical connectionPower usage
The invention relates to an energy storage device and a power utilization system. The energy storage device comprises a shell, an electrode assembly, an end cover assembly and a binding piece, wherein the shell is provided with an accommodating cavity; the electrode assembly is arranged in the accommodating cavity, the electrode assembly comprises a plurality of tabs and an electrode main body which are electrically connected, and the tabs and the electrode main body are arranged along a first direction; the end cover assembly is arranged on one side of the shell and used for sealing the containing cavity. The binding piece is positioned between the end cover assembly and the electrode main body; the binding piece is provided with a penetrating hole, and the penetrating hole penetrates through the two opposite surfaces of the binding piece in the first direction. The penetrating hole extends along a second direction, the plurality of tabs penetrate through the penetrating hole, and the first direction is intersected with the second direction; the penetrating hole is provided with a first side wall and a second side wall which are oppositely arranged in the second direction, and in the second direction, the distance between the first side wall and the second side wall is larger than the size of the ends, close to the electrode body, of the tabs.
Owner:XIAMEN HITHIUM ENERGY STORAGE TECHNOLOGY CO LTD
Method and apparatus for testing the interrupt response capability of CNC systems with computational load
This application relates to the field of CNC system interrupt response testing, specifically to a method and apparatus for testing the interrupt response capability of a CNC system platform under computational load. The method includes: configuring real-time and non-real-time tasks on the CNC system platform and maintaining continuous operation during the test; configuring the platform's first pin to external interrupt mode and configuring an interrupt handling function; generating a periodic excitation signal synchronized with the platform's control cycle using a signal generator and inputting it to the first pin to trigger an interrupt; simultaneously acquiring the excitation signal and the interrupt response signal using a signal receiver, continuously measuring the time interval between signal edges within each excitation cycle as the interrupt response time within a preset test time; statistically calculating the maximum value, average value, and jitter to evaluate the platform's real-time performance and determinism under actual operating load conditions. This solves the problem that existing technologies cannot accurately evaluate interrupt response capability under load conditions.
Owner:GENERAL TECH GRP MASCH TOOL ENG RES INST CO LTD
A pure electric new energy driven automobile motor shell sealing type mounting structure
The application provides a pure electric new energy driven automobile motor shell sealing type mounting structure, and relates to the technical field of new energy vehicles, comprising an outer shell body, an end cover body, a self-adaptive multiple sealing structure, an operating port sealing structure and an inner multiple point locking mechanism; the application has the advantages of reasonable and simple structure, low production cost, convenient installation and complete functions; through the multiple sealing and self-adaptive structure, double sealing of the end face and the side face is realized, the slight offset of the end cover and the shell during butt joint can be self-adapted, the sealing reliability is effectively improved, the invasion of external dust and water vapor can be blocked, and the operation safety of the internal components of the motor is ensured; the application adopts a multiple point synchronous locking structure, can realize uniform pressing of the end cover and the shell, avoids stress distortion of the end cover, is equipped with a reliable self-locking structure at the same time, can prevent loosening of the locking components, ensures the connection stability, and meets the use requirements of the vehicle-mounted vibration environment.
Owner:江苏荟轩精工股份有限公司
Auxiliary assembly of screening device for injection molding master batch production
ActiveCN224224267UEffective screening hasImprove stabilityPlastic recyclingGrain treatmentsMasterbatchMechanical engineering
The auxiliary assembly of the screening device for injection molding master batch production comprises an auger elevator, a crusher, a screening machine, a screen mesh, supporting legs and a discharging port, first supporting plates are fixedly connected to the two sides of the interior of the screening machine, first tension springs are fixedly connected to the two sides of the top of each first supporting plate, and second tension springs are fixedly connected to the two sides of the top of each first supporting plate. A baffle is arranged on the right side in the screening machine. Through the arrangement of the first supporting plate, the first tension spring and the baffle, the baffle blocks material screening falling, then the screen drives the first tension spring to stretch and move, then the first tension spring releases tension to drive the screen to move to screen materials on the top, and the problems that when master batch screening is conducted, the material falling speed is too high, and the material falling speed is too high are solved. The problems that the feeding amount is too large, materials directly enter the auger elevator and cannot make full contact with a screen mesh, and the screen mesh cannot effectively screen the materials due to the fact that a blocking measure for the master batch is lacked in the feeding link are solved.
Owner:洛阳共聚塑业有限公司