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Recovery method of titanium alloy powder for additive manufacturing
PendingCN119501071Auniform compositionLow elemental contentTransportation and packagingMetal-working apparatusIngotTitanium alloy
The invention discloses a recovery method of titanium alloy powder for additive manufacturing, and relates to the technical field of titanium alloy materials, the recovery method comprises the following steps: step 1, sheath material selection and processing: carbon steel with good welding performance is preferably selected as a sheath material; the size of the sheath is designed according to the actual ingot shape condition; 2, selecting raw materials, namely mixing titanium alloy spherical powder and micron-sized titanium alloy powder with the granularity of 15-300 mu m and the same brand, and performing an HIP + VAR process to obtain a titanium alloy cast ingot with more uniform material components and smaller element content range; a conventional titanium alloy powder hot isostatic pressing process needs a high treatment temperature which is generally between 930 DEG C and 1050 DEG C, the density of a blank after hot pressing is required to be close to 100%, according to the method, the material hot isostatic pressing treatment temperature is required to be 600 DEG C to 650 DEG C, an electrode blank with certain strength meeting VAR smelting can be obtained, energy consumption is reduced, and meanwhile the requirement for the performance of hot isostatic pressing equipment is extremely low.
Owner:SHAANXI XINGHAN BEICHEN NEW MATERIAL TECHNOLOGY CO LTD
Hydro-generator ultrahigh frequency partial discharge identification method based on attenuation coefficient correction
PendingCN119471241ALower performance requirementsImprove applicabilityTesting dielectric strengthHydro energy generationMonitoring siteHydrology
The invention provides a hydro-generator ultrahigh frequency partial discharge identification method based on attenuation coefficient correction, and belongs to the technical field of partial discharge signal measurement. The method comprises the following steps: acquiring a partial discharge test signal which is acquired at an acquisition point and is transmitted by a stator bar, analyzing the acquired partial discharge test signal to obtain a transfer function and a signal attenuation coefficient of a signal transmission path between an injection point and the acquisition point, and injecting the partial discharge test signal into the stator bar from the injection point, an injection point is arranged at the suspended part of the head end of the stator bar; acquiring a partial discharge signal under an actual working condition; reconstructing and correcting the partial discharge signal by using the maximum signal attenuation coefficient and the corresponding transfer function; and comparing the amplitude of the corrected partial discharge signal with the typical partial discharge amplitude, and judging whether a partial discharge event occurs in the stator bar. Based on the method, quantitative analysis of the insulation state of the stator bar is achieved, the requirement for the ability of technicians on a monitoring site is lowered, and the applicability is higher.
Owner:GUODIAN SCI & TECH RES INST
Heterogeneous multi-robot air-ground collaborative material distribution method
InactiveCN119648103AIncrease carrying capacityImprove battery lifeInternal combustion piston enginesForecastingFlight vehicleSimulation
The invention discloses a heterogeneous multi-robot air-ground collaborative material distribution method, and belongs to the technical field of multi-unmanned system task allocation. Comprising the following steps: determining an air-ground collaborative minimum coverage area unit, carrying out partitioning on the air-ground collaborative minimum coverage area unit, and selecting a collection and distribution center for material distribution and external placement points; carrying out optimal closed-loop sequence solution on a delivery route between the delivery point and the material delivery area to obtain a shortest path with road information; incremental updating and multi-source information fusion mapping are carried out on a delivery area through real-time collaborative environment perception of the unmanned aerial vehicle and the unmanned vehicle; performing optimal path planning based on the distribution task; based on the planned optimal path, a distribution task is completed; and through communication of the Internet of Things, a return route is planned, and a next distribution task is prepared. The unmanned vehicle and the unmanned aerial vehicle are combined, air-ground cooperative three-dimensional autonomous material distribution is achieved, and complementary advantages of large carrying capacity and long cruising ability of the unmanned vehicle and high maneuverability and three-dimensional distribution of the unmanned aerial vehicle are achieved.
Owner:HARBIN FOURIER INTELLIGENT CONTROL TECHNOLOGY CO LTD
Manufacturing method of battery string, manufacturing method of photovoltaic module and photovoltaic module
PendingCN119497431Alow costLower performance requirementsFinal product manufacturePhotovoltaic energy generationThermodynamicsElectrical battery
The embodiment of the invention relates to the photovoltaic field, and provides a manufacturing method of a battery string, a manufacturing method of a photovoltaic module and the photovoltaic module, and the manufacturing method of the battery string comprises the steps: providing an initial battery piece; segmenting the initial battery piece to form at least three segmented battery pieces; a buffer adhesive film is laid on the surface of the end part, close to the adjacent split battery piece, of each split battery piece; carrying out thermal fixation treatment, which comprises the following steps: heating the buffer adhesive film so as to enable the buffer adhesive film to be adhered to the surface of the fragmented battery piece; a welding strip is provided, the welding strip is electrically connected with the at least two fragmented battery pieces so as to connect the adjacent fragmented battery pieces in series, the adjacent fragmented battery pieces are partially overlapped, and the welding strip covers the buffer adhesive film on the surfaces of the fragmented battery pieces; and laser welding is carried out, and the laser welding comprises the steps that laser is controlled to irradiate the surface of the welding strip, so that the welding strip is welded to the surface of the fragmented battery piece. The reliability of the formed battery string can be improved.
Owner:JINKO SOLAR CO LTD +1
Louver and louver handrail
PendingCN119266680ARealize functionturn easilyShutters/ movable grillesLight protection screensRotational axisDrive shaft
The invention discloses a shutter and a shutter handrail, and relates to the technical field of building decoration. The window frame extends in the first direction and is provided with a window opening penetrating in the second direction. The louver blade assembly is arranged in the window and comprises a plurality of louvers arranged in the first direction, and the two opposite ends of each louver are rotationally connected with the window frame; in the driving mechanism, a rotating driving part is used for driving a transmission shaft to rotate, the transmission shaft is arranged on one side of the louver blade assembly in the first direction and extends in the length direction of the louver blades, the two opposite ends of the transmission shaft are rotationally connected with the window frame, and at least one end of the transmission shaft and at least one end of each louver blade are coaxially provided with rotating parts. Each rotating piece is provided with two connecting ends symmetrical about the rotating axis of the rotating piece, transmission rods are arranged on the two opposite sides of the transmission shaft in the second direction, and each transmission rod extends in the first direction and is hinged to all the connecting ends located on the same side of the transmission shaft and the rotating piece. The transmission mechanism is good in rotation synchronism, good in sunshade and ventilation effect and low in transmission noise.
Owner:FOSHAN QITE TECH CO LTD
Data processing method and device, terminal equipment, chip and storage medium
ActiveCN119299050ALower performance requirementsImprove processing efficiencyError preventionHigh level techniquesTerminal equipmentPhysical layer
The invention provides a data processing method and device, terminal equipment, a chip and a storage medium, and the method comprises the steps: responding to the determination that a physical layer decoder obtains downlink data, generating the indication information of the downlink data through the physical layer decoder, and transmitting the indication information of the downlink data to an analyzer, downlink data and control information of the downlink data are obtained through an analyzer according to indication information of the downlink data, the downlink data are analyzed according to the control information of the downlink data, and an analysis result is obtained. According to the invention, the parser obtains the downlink data based on the parsing information of the downlink data and completes the parsing of the downlink data, so that the hardware pipeline processing of the downlink data between the physical layer decoder and the parser is realized, the processing efficiency is improved, the performance requirement on a CPU (Central Processing Unit) is reduced, and the power consumption is reduced.
Owner:BEIJING X RING TECHNOLOGY CO LTD
Frequency modulated continuous wave laser radar phase noise compensation method and device
ActiveCN119556265AAccurate estimateEliminate bad effectsWave based measurement systemsContinuous lightPhase noise
The invention discloses a frequency modulated continuous wave laser radar phase noise compensation method. The frequency modulation continuous optical signal is divided into two paths: a measurement path and an auxiliary path; the frequency modulation continuous optical signal of the measurement path is divided into two paths, one path is used as a reference optical signal, the other path is used as a detection optical signal to be emitted to a target, and beat frequency is carried out on the received target reflection optical signal and the reference optical signal to obtain a beat frequency signal of the measurement path; the frequency modulation continuous optical signal of the auxiliary path passes through a Mach-Zehnder interferometer with a fixed time delay difference and then is subjected to beat frequency to obtain an auxiliary path beat frequency signal; searching and determining the frequency of the beat frequency signal of the measurement path, and extracting the phase noise in the beat frequency signal of the auxiliary path; estimating the phase noise of the measurement path; and finally compensating the phase noise. The invention also discloses a frequency modulated continuous wave laser radar phase noise compensation device. Compared with the prior art, the calculation amount of digital processing can be greatly reduced.
Owner:NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
Boost type adjustable high-voltage reference source
PendingCN119472902Areduce power consumptionminiaturizationElectric variable regulationCapacitanceLoop control
The invention relates to a boost type adjustable high-voltage reference source which comprises a Boost topological structure, a voltage doubling circuit and an output filter circuit. The Boost topological structure comprises an LC circuit, a switching circuit and a voltage feedback circuit; the LC circuit receives external input voltage, when the switching circuit is closed, the external input voltage flows through the inductor, and the inductor stores energy; when the switching circuit is disconnected, the inductor discharges to charge the LC circuit and the capacitor in the voltage doubling circuit, and the voltage at the two ends of the capacitor is increased, so that the output voltage is higher than the input voltage; the voltage doubling circuit reduces the voltage-withstanding requirement on the device through a multi-stage structure, and the output voltage is sent to the output filter circuit to be filtered and then output; and the voltage feedback circuit samples the output voltage of the voltage doubling circuit, compares the output voltage with the reference voltage, controls the on-off time of the switching circuit, and realizes closed-loop control of the output voltage. The problem that high reference voltage is generated under the condition of low power supply voltage is solved, circuit miniaturization and low power consumption are achieved through the Boost topological structure, and the requirement for device performance is lowered through the voltage doubling circuit.
Owner:BEIJING INST OF CONTROL ENG
Inverter type selection method of photovoltaic power generation system and related products
PendingCN119598680Areduce workloadbalance performanceData processing applicationsCharacter and pattern recognitionInverterTesting Methods
The invention provides an inverter type selection method of a photovoltaic power generation system and a related product. The inverter type selection method of the photovoltaic power generation system comprises the following steps: acquiring a photovoltaic design scheme of the photovoltaic power generation system; determining electrical parameters of three groups of different types of inverters according to the electrical parameters, wherein the three groups of different types of inverters comprise a string type inverter, a centralized inverter and a micro inverter; determining the mechanical performance requirements of the three groups of different types of inverters according to the installation mode; selecting matched alternative equipment models of three different types of inverters from an inverter model selection library according to the electrical parameters and the mechanical performance requirements; generating three groups of alternative inverter type selection schemes according to the selected alternative equipment types of the three different types of inverters; and selecting a target inverter from the three groups of alternative inverter type selection schemes. The scheme provided by the invention is wide in application scene, and suitable inverter schemes can be provided for various photovoltaic design schemes.
Owner:HAIER ENERGY TECHNOLOGY CO LTD
Photon calculation method and device and computer equipment
PendingCN119597108AReduce the difficulty of implementationImprove efficiencyDigital dataComputation using denominational number representationData packOptical processing
The invention provides a photon calculation method, a photon calculation device and computer equipment. The method comprises the steps that first data are obtained, the first data comprise a plurality of first elements, and each first element represents a number; splitting each first element in the first data into a plurality of parts in the electronic domain; and in a photon domain, representing a plurality of parts after each first element of the first data is split by adopting an optical signal, and carrying out optical processing on the optical signal so as to represent calculation on the plurality of first elements.
Owner:SHANGHAI XIZHI TECH CO LTD
Compliant mechanism for industrial robot polishing end effector
PendingCN119458397ALower performance requirementsreduce vibrationManipulatorCompliant mechanismIndustrial robotics
The invention relates to a compliant mechanism for an industrial robot polishing end effector, which comprises an inner shell, positive stiffness characteristic mechanisms, negative stiffness characteristic mechanisms and an outer shell, the inner shell is of a hollow cylindrical structure and is connected with one ends of the three negative stiffness characteristic mechanisms and one ends of the three positive stiffness characteristic mechanisms, and the other ends of the three negative stiffness characteristic mechanisms are connected with the outer shell; the two mechanisms are uniformly distributed in the cylindrical surface of the inner shell, the other ends of the two mechanisms are connected with the outer shell, the inner shell can be sleeved on the bearing to move along with the movement of the bearing, the two mechanisms are driven to move, the outer shell is further driven to move, and the movement of the whole mechanism is realized. The flexible control device acts on the end effector of the grinding industrial robot to achieve flexible control, vibration generated in the grinding process can be restrained, force fluctuation is reduced, grinding force is controlled within the expected range, meanwhile, force overshoot is avoided, the body health of workers is guaranteed, a workpiece, the end effector and the grinding environment are prevented from being damaged, and the working efficiency is improved. And the surface quality of the workpiece is improved, and the production efficiency is improved.
Owner:CHANGSHA UNIVERSITY OF SCIENCE AND TECHNOLOGY
Optical computing chip based on multiplexing and design method thereof
ActiveCN119596455Asimple structureImprove computing efficiencyOptical waveguide light guideBeam splittingIntensity modulation
The invention relates to the technical field of semiconductors, in particular to a multiplexing-based optical computing chip and a design method thereof.The multiplexing-based optical computing chip comprises a computing area formed by crossing a first waveguide and a second waveguide, and the computing area comprises a branch waveguide connected with the first waveguide and the second waveguide, a beam splitting part, an intensity modulation part and a first signal conversion part are sequentially arranged on the branch waveguide, the beam splitting part is used for splitting optical signals in a specific proportion, the intensity modulation part is used for modulating the signal intensity of the optical signals into a specific value, and the first signal conversion part is used for setting or maintaining the optical signals in a specific mode; the specific mode means that the optical signal has a specific polarization direction and / or a specific order; the second waveguide is provided with a calculation unit for calculating the sum of the optical powers of the plurality of optical signals. According to the multiplexing scheme provided by the invention, the data processing amount of the optical computing chip can be improved.
Owner:LIGHTSTANDARD CO LTD
A fluid simulation method, device, system and storage medium
ActiveCN114818538BLower performance requirementslower requirementDesign optimisation/simulationCyclic processData set
The present application discloses a fluid simulation method, device, system and storage medium, which relate to the field of electrowetting technology. A fluid simulation method includes: acquiring a simulation data set; defining the initial physical field distribution of the device according to the simulation data set; executing a cycle process until a preset condition is met, and determining the current physical field distribution when the preset condition is met as a steady-state distribution state or a target state; wherein the preset condition is that the current phase field change is less than the preset change or the current cycle number is equal to the preset cycle number. The fluid simulation method of the present application can simulate the electrowetting phenomenon of the fluid more accurately, and the simulation effect is closer to reality.
Owner:LIGHT DISPLAY TECH (GUANGDONG) CO LTD
Unmanned aerial vehicle knocking device
ActiveCN222508745Ueasily brokenreduce shakingAircraft componentsOverhead installationUncrewed vehicleStructural engineering
Owner:SICHUAN JIURUNXING TECH CO LTD
Multi-sensor fusion sensing method based on high-precision map
PendingCN119418156AFlexible configurationImprove perception accuracyScene recognitionThree-dimensional object recognitionPattern recognitionStereo matching
The invention discloses a multi-sensor fusion sensing method based on a high-precision map. The method comprises the following steps: sensing and acquiring information of static obstacles based on the high-precision map; performing original data fusion of dynamic obstacle information based on multi-sensor fusion, and summarizing data of all sensors to obtain a super sensor; obtaining the symmetry of the geometric structure of the multi-dimensional body according to the obtained super sensor, and extracting data information of a target obstacle based on edge detection and an obstacle IOU contour; and performing sensing fusion on a high-precision map based on stereo matching and the sensors, and performing shielding detection on inconsistent areas by adopting multi-source consistency check to complete final fusion of the multiple sensors. According to the invention, the possible road condition in front of the current position can be known in advance, and the function of the sensor module is dynamically adjusted, so that the performance requirement on the sensor is reduced, and vehicle-mounted computing resources are reasonably allocated.
Owner:安徽海博智能科技有限责任公司
Electric tool
ActiveCN119589617ALower performance requirementsImprove cutting effectAssociation with control/drive circuitsPortable power-driven toolsDrive shaftElectric machinery
The invention discloses an electric tool which comprises a first motor comprising a first driving shaft rotating around a first axis; a second motor including a second drive shaft rotating about a second axis; the power transmission mechanism transmits the power of at least one of the first motor and the second motor to the output shaft, and the torque of the first driving shaft and the torque of the second driving shaft are output through the output shaft; the power transmission mechanism comprises a transmission assembly arranged between at least one of the first motor and the second motor and the output shaft; the transmission assembly at least comprises a speed reduction mechanism which provides at least one speed reduction ratio. And the clutch assembly is arranged between the first motor and the second motor, and the clutch assembly is used for limiting or allowing at least one of the first driving shaft and the second driving shaft to drive the output shaft under preset conditions. The electric tool is more stable through cooperation of the two motors.
Owner:NANJING CHERVON IND
Emergency field data sensing system based on cloud side end processing
ActiveCN119580142AReduce the number of mistakesimprove performanceData processing applicationsCharacter and pattern recognitionEdge serverSimulation
The invention discloses an emergency field data sensing system based on cloud side end processing, which relates to the technical field of emergency data sensing and comprises an identification model construction unit, a target frame detection unit, a global position analysis unit, an influence degree judgment unit, an evacuation path generation unit and an emergency processing unit. According to the invention, local position information contained in an image data frame corresponding to each sub-region is analyzed in an edge server through a global position analysis unit, and the local position information related to each sub-region is converted by using a coordinate optimization algorithm in a cloud server to obtain global position information in a specified scene. By means of the design, on one hand, the accurate position of the target can be obtained, on the other hand, the calculation speed of the system is greatly improved, the requirement for server performance is lowered, and the optimal evacuation path of each crowd in the emergency site is calculated through the influence degree judgment unit and the evacuation path generation unit; and the condition that the personnel are congested during evacuation is avoided.
Owner:SHANXI BONIAN TECH CO LTD
Method and device for judging driving direction of servo motor with absolute encoder
PendingCN119276180AReduce the amount of codeReduce the number of operationsIndication/recording movementAC motor direction controlControl engineeringcomputer science
The invention belongs to the technical field of encoders, and particularly discloses a method and equipment for judging the driving direction of a servo motor with an absolute encoder. The method comprises the following steps of: sequentially arranging and storing coded values of an absolute position encoder into a one-dimensional coding array according to an actual sequence of the coded values; obtaining a current coding value and a target coding value, judging whether the current coding value is legal, and respectively calculating the positions of the current coding value and the target coding value in the coding array; the position of the current coding value in the coding array and the position of the target coding value in the coding array are judged, if the position of the current coding value in the coding array is larger than the position of the target coding value in the coding array, the driving direction of the servo motor is reverse, and otherwise, the driving direction of the servo motor is forward. According to the method, the code quantity and the operation frequency are reduced, the calculation time is shortened, and the performance requirement on a control chip of the servo controller is reduced.
Owner:DONGFENG OFF ROAD VEHICLE CO LTD
Optical storage and charging energy scheduling method, system and device and medium
PendingCN119315540Aincrease incomeshorten the lengthData processing applicationsBatteries circuit arrangementsEconomic benefitsOptical storage
The invention discloses an optical storage and charging energy scheduling method, system and device and a medium, relates to the technical field of optical storage and charging energy scheduling, is used for optimizing energy scheduling of an optical storage and charging system, and provides a day-ahead-day-real-time triple-time-scale multi-layer optical storage and charging energy scheduling method for solving the problem that the scheduling effect of a traditional scheme needs to be improved. According to the method, day-ahead optimization scheduling and intra-day optimization scheduling are combined, and an optimization scheduling task is split and is realized by two different models at two different times, so that the time granularity of optimization scheduling is shortened, and the length of an optimization time period is expanded. Besides, the method is also combined with a real-time scheduling strategy, and after the energy scheduling instruction obtained by day-ahead and intra-day prediction is obtained, the operation data of the optical storage and charging system at the current moment is also obtained in real time to correct the energy scheduling instruction, so that the problem that the operation safety of the optical storage and charging system which changes in real time cannot be adapted is solved; and the optical storage and charging system can be better enabled to be close to the optimal economic benefit all day long.
Owner:GOODWE TECHNOLOGIES CO LTD
Bidirectional photovoltaic energy storage inverter and photovoltaic energy storage system
ActiveCN222638176USimple structurecontrol operationPV power plantsAc-dc conversionPower gridAlternating current
The utility model discloses a bidirectional photovoltaic energy storage inverter and a photovoltaic energy storage system. The bidirectional photovoltaic energy storage inverter comprises at least one DC conversion module, a DC bus, a bidirectional AC / DC conversion module, a bidirectional DC / DC conversion module and a control module. The at least one direct current conversion module is used for converting the output voltage of the changed photovoltaic string into stable direct current bus voltage; the bidirectional AC / DC conversion module is used for converting the DC bus voltage into AC voltage and outputting the AC voltage to an AC load or an AC power grid; the bidirectional DC / DC conversion module is used for energy transmission between the DC battery module and the DC bus; the control module is used for controlling operation of all the modules. By adding the bidirectional photovoltaic energy storage inverter, zero-voltage pipe section and zero-current switching-on can be realized under different conditions, and the suitability of the photovoltaic energy storage system is greatly improved.
Owner:GUANGDONG BODENTONG NEW ENERGY TECH CO LTD
An access boat structure and coating equipment
ActiveCN224395019Ureduce scratchesLow failure rateChemical vapor deposition coatingCantileverTranslatory motion
The utility model provides a kind of in-out boat structure and coating equipment, wherein the in-out boat structure includes lifting drive device, for driving at least two translation drive devices synchronous lifting movement;Translation drive device, for driving the corresponding translation movement piece of each translation drive device synchronous reciprocating translation movement;At least two boat moving assemblies, respectively installed on corresponding translation movement piece, the corresponding support paddle of at least two boat moving assemblies is respectively used to move at least two carriers boat into and out of at least two reaction cavities.The in-out boat structure provided by the utility model can move at least two carriers boat into and out of each group of at least two reaction cavities in the height direction of furnace body synchronously layer by layer, shorten the length of reaction cavity and narrow it under the premise of not reducing production capacity, shorten the cantilever length of support paddle of in-out boat structure adaptively, improve the rigidity of cantilever structure, reduce the scratching of carrier boat caused by cantilever deformation and shaking and the failure rate of coating equipment, and improve the working stability of coating equipment.
Owner:S C NEW ENERGY TECH CORP
An efficient ac power line zero-crossing detection chip
This invention relates to the field of pulse circuit technology and discloses a high-efficiency AC power line zero-crossing detection chip, including a path selection module, a signal processing module, and a driving module. The path selection module switches the charging circuit according to the potential of the internal power supply capacitor. The signal processing module uses a feedback loop to adjust the switching level of the sampling branch and generate a zero-crossing trigger pulse signal. The driving module responds to the zero-crossing trigger pulse signal by segmentally turning on the internal power supply capacitor and the external energy supply capacitor in the initial and subsequent stages of the zero-crossing point. This invention solves the contradiction between the ultra-high input impedance sampling environment and the driving strength through a controlled hysteresis window and a segmented current injection mechanism, suppresses signal jitter, improves the timing accuracy of zero-crossing detection, and effectively reduces the static power consumption of the system.
Owner:SHENZHEN LANCHAO TECH CO LTD
A humanoid robot two-degree-of-freedom parallel ankle joint mechanism and kinematics and mechanics calculation method
ActiveCN120116252BLower performance requirementsincrease torqueProgramme-controlled manipulatorJointsClassical mechanicsElectric machinery
The application relates to the technical field of robots, and discloses a kind of two-degree-of-freedom parallel ankle joint mechanism of humanoid robot and kinematics and mechanics solving method, including seven-link transmission structure, which is composed of two groups of closed-chain transmission of parallel four-bar linkages.Motor I and II are installed on the upper end of the lower leg, and the rotation drives link IV and III to move through link I, II, V and VI, and then coupled control ankle joint pitch and lateral freedom degree.The mechanism realizes load balancing of double motors through parallel transmission, improves equivalent torque, and can combine kinematics and mechanics solving method, so that precise control can be realized only by motor feedback, sensor cost is reduced, and is suitable for high stability motion demand of biped robot.
Owner:58 INTELLIGENT TECH (HANGZHOU) CO LTD
CPR machine
ActiveCN113116705Breduce sizereduce fatigueRespiratorsElectrotherapyIntensive care medicineMechanical engineering
The present invention discloses a cardiopulmonary resuscitation machine, which includes a shell assembly, a control assembly, a pneumatic pressing assembly and a breathing ventilation assembly. The shell assembly is formed with a accommodating cavity; the control assembly is arranged in the accommodating cavity; the pneumatic pressing assembly includes an air source, a cylinder and a pressing head, the cylinder is arranged in the accommodating cavity and is connected to the air source, the pressing head is exposed from the shell assembly and is connected to the output end of the cylinder, and under the control of the control assembly, the cylinder drives the pressing head to reciprocate linearly relative to the shell assembly; the breathing ventilation assembly is arranged in the accommodating cavity and is electrically connected to the control assembly, the breathing ventilation assembly is connected to the air source, and has a gas output interface exposed to the shell assembly. The cardiopulmonary resuscitation machine of the technical solution of the present invention can improve the success rate of first aid and has a simple structure and is easy to carry.
Owner:AMBULANC (SHENZHEN) TECH CO LTD
A global positioning method and system based on virtual descriptor
ActiveCN115390082Breduce workloadincrease success rateCharacter and pattern recognitionElectromagnetic wave reradiationPoint cloudComputer graphics (images)
The present invention relates to a global positioning method and system based on virtual descriptors, the method comprising: preprocessing laser radar point cloud data and extracting feature point clouds; dynamically generating virtual descriptors in sequence with arbitrary positions as the center for key frame feature point clouds; building a sparse descriptor map with adjustable density in combination with positioning information obtained from a GNSS / INS combined positioning system; building a point cloud map using original point cloud information at the same time; extracting SC descriptors from query frame feature point clouds, loading sparse descriptor maps for two-stage weighted search and matching, and obtaining candidate frames and matching initial values; loading point cloud information within a set range around the candidate frames, building a local point cloud map, matching the query frame point cloud with the local point cloud map, and obtaining global positioning information. Compared with the prior art, the present invention can simultaneously have rotation and translation invariance, and has the advantages of small calculation amount, small map acquisition workload, high precision, and strong environmental applicability.
Owner:TONGJI UNIV
Explosion-proof infrared high-speed ball
The invention discloses an explosion-proof infrared high-speed ball, comprising a first cavity, a second cavity and a third cavity; wherein a pitch rotation mechanism for driving the second cavity to realize pitch rotation is also arranged in the second cavity and the third cavity, the pitch rotation mechanism comprises a second motor arranged in the second cavity, a reduction transmission mechanism arranged in the third cavity, an inner transmission shaft transmission-connected between the second motor and the reduction transmission mechanism, and an outer transmission shaft transmission-connected between the reduction transmission mechanism and the second cavity, and the outer transmission shaft is rotationally connected to the outside of the inner transmission shaft, one end of the outer transmission shaft and the inner transmission shaft extends into the second cavity, and the other end extends into the third cavity; the device seals the motor in the second cavity to ensure the explosion-proof safety of the device, and arranges the transmission mechanism connected with the motor outside the second cavity, so that the second cavity for driving the camera to rotate and shoot is lighter in weight, smaller in size, and more sensitive when rotating and shooting.
Owner:CHANGZHOU DEERKE MECHANICAL & ELECTRICAL EQUIP CO LTD
Infrared absorbing composite microparticles, infrared absorbing microparticle dispersion liquid, and infrared absorbing microparticle dispersion
PendingEP4361231A4Lower performance requirementsHigh light transmittanceOther chemical processesInorganic pigment treatment
There is provided infrared absorbing composite fine particles whose surfaces are coated with a coating film containing one or more selected from a hydrolysis product of a metal chelate compound, a polymer of the hydrolysis product of the metal chelate compound, a hydrolysis product of a metal cyclic oligomer compound, and a polymer of the hydrolysis product of the metal cyclic oligomer compound, wherein a silicon compound is present in one or more locations selected from within the coating film, on the coating film, and the vicinity of surfaces of the infrared absorbing composite fine particles.
Owner:SUMITOMO METAL MINING CO LTD
Virtual reality apparatus, method, and storage medium
PendingCN122115188ALower performance requirementslow costInput/output for user-computer interactionProcessor architectures/configurationComputer hardwareComputer graphics (images)
The application provides a virtual reality device, a method and a storage medium, and belongs to the technical field of virtual reality. The virtual reality device provided by the application is provided with a plurality of cameras and a plurality of processing chips connected through a bus, and each processing chip is connected with part of the plurality of cameras, so that the plurality of processing chips share the virtual reality display task, the performance requirement of a single processing chip is low, and the cost can be effectively reduced.
Owner:BOE TECHNOLOGY GROUP CO LTD
Interview auxiliary method and device, medium and product
PendingCN121958605AReduce analytical stressLower performance requirementsDigital data information retrievalInference methodsEngineeringData science
The invention discloses an interview assisting method and device, a medium and a product, and relates to the field of artificial intelligence, in particular to application of a large model in intelligent services in the field of financial science and technology. The method comprises the steps of screening a target interview question from an interview question bank based on personal information of a visited person and a historical interview record of a current interview theme; in the interview process of the visited person according to the target interview question, determining potential anomalies in the interview process through a multi-modal large model; and displaying the potential abnormity on an interview auxiliary panel of the interview site. According to the embodiment of the invention, the interview effect can be improved, and the pressure of interviews is relieved.
Owner:INDUSTRIAL AND COMMERCIAL BANK OF CHINA
Teaching solid-liquid contact angle software and hardware measurement system based on seating drop method
PendingCN121767423Aquick observationeasy maintenanceImage analysisInput/output processes for data processingComputer hardwareComputational science
The invention discloses a teaching solid-liquid contact angle software and hardware measurement system based on a seating drop method, and the system comprises a hardware device and a software interaction and algorithm, the device can achieve the manual rotation of an XY plane and a YZ plane and the manual translation of an X axis and a Z axis, and the software interaction and algorithm comprises the steps: S1, enabling a plane where a camera is located to be perpendicular to a plane where a liquid drop is located, and carrying out the photographing to obtain a liquid drop picture; s2, carrying out graying processing on the liquid drop picture; s3, performing multi-stage interactive cutting on the grayed picture; s4, a Canny edge detection algorithm or a thresholding method is adopted, the contour extraction of the cut picture is completed through shading, iterative optimization is carried out, and liquid drop contour data are output; s5, drawing a liquid drop contour line on the grayscale image, drawing a base line, and calculating to obtain contact angle data; software provided by the invention is point-and-play, and the software can be matched and cooperated with designed hardware to complete a contact angle data acquisition function, and can also be independently used to process a liquid drop picture to obtain a contact angle numerical value.
Owner:CHINA PHARM UNIV