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32results about How to "Guaranteed anti-interference ability" patented technology

Aviation data bus signal encryption method and system based on FPGA

The invention relates to the technical field of signal encryption, in particular to an aviation data bus signal encryption method and system based on a field programmable gate array (FPGA), which comprises the following steps of: based on input three-dimensional tensor signal data, extracting slices from a time index of an aviation data bus according to a fixed interval, progressively sequencing amplitudes of signal channels, and then segmenting; according to the method, through processing logic of matrix decomposition and feature curve generation, the feature extraction and dimension reduction process is optimized, the distinction degree and the expression capacity of feature information are improved, the randomness and the anti-cracking capacity of a key are enhanced through a key generation mode combining a dynamic disturbance factor and an encryption parameter, and the safety of signal transmission is guaranteed; through combination of amplitude superposition and frame-by-frame storage, dynamism and high efficiency of a signal encryption process are realized, signal tampering and eavesdropping risks are reduced, and through feature reconstruction and point-by-point matching processing in a decryption stage, accurate restoration of signal amplitude is ensured, and data integrity and anti-interference capability are guaranteed.
Owner:XIAN JANGHO ELECTRONIC TECH CO LTD

Power transmission line power inspection robot and control method thereof

The invention discloses a power transmission line power inspection robot and a control method thereof. The power transmission line power inspection robot comprises a left climbing arm and a right climbing arm. Angle opening and closing mechanisms are arranged in the middles of the left climbing arm and the right climbing arm; auxiliary arms are arranged on the left climbing arm and the right climbing arm; the bottom of the left climbing arm and the bottom of the right climbing arm are each provided with a composite clamping jaw body, and each composite clamping jaw body is provided with an electromagnetic clamping jaw and two mechanical clamping jaws. The method further comprises the control steps of S1 to S6 and the like. According to different position distances between the foot pin and the inspection robot, a specific control algorithm is combined, and two clamping modes of the mechanical-electromagnetic composite clamping jaw can be distinguished according to whether the foot pin can be grabbed or not, so that different climbing and grabbing modes are adopted to cope with different distances between the inspection robot and the foot pin; energy consumed by the inspection robot in the climbing inspection process is saved, and the endurance and efficiency of the inspection robot in the inspection work are improved.
Owner:SICHUAN UNIV

Command vehicle rack-mounted power management system

The invention discloses a command vehicle rack-mounted power supply management system, and the system comprises a power supply filtering module which carries out the filtering of power supply input, and removes the high-frequency electromagnetic interference possibly carried by a power line; the electromagnetic shielding module is used for shielding electromagnetic radiation inside and outside the system; the grounding management module is used for providing a unified grounding point of the system and ensuring that all electrical connections have the same potential so as to reduce electromagnetic interference generated by the difference of the grounding point; the signal transmission optimization module is used for ensuring that signal transmission channels inside and outside the system are not influenced by electromagnetic interference; the electromagnetic interference suppression module is used for suppressing transient high-frequency interference generated in the system; and the environment monitoring and feedback module is used for monitoring electromagnetic environments inside and outside the rack in real time and automatically adjusting an EMC protection strategy of the system according to monitoring data so as to adapt to different working conditions. The command vehicle can adapt to a complex electromagnetic environment and ensure stable operation of equipment in the command vehicle.
Owner:范之兵

Multi-sensor fusion positioning method and device for multi-layer roadway scene, electronic equipment and storage medium

The invention relates to a multi-sensor fusion positioning method for a multi-layer roadway scene. The method comprises the following steps: acquiring attitude data of an inertial measurement unit, point cloud data of a laser radar and UWB (Ultra Wideband) beacon data in different time periods; importing the point cloud data and the attitude data into an SLAM algorithm to generate a plurality of first global maps in different time periods; combining the plurality of first global maps to generate a second global map; splitting the second global map to generate a plurality of topological sub-maps; and obtaining vehicle positioning according to the UWB beacon data. The invention further discloses a device, electronic equipment and a storage medium suitable for the method. By using the multi-sensor fusion positioning method and device for the multi-layer roadway scene, the electronic equipment and the storage medium provided by the invention, the problems that the labor cost of field surveying and mapping and instrument measurement is relatively high, and the method is not suitable for large-scale underground scenes are solved; and the laser radar cannot be started at any position.
Owner:NANJING BESTWAY AUTOMATION SYST

Channel compensation method and device, electronic equipment and storage medium

The invention discloses a channel compensation method and device, electronic equipment and a storage medium, and relates to the technical field of signal processing. The method comprises the following steps: acquiring a receiving end pilot signal and a transmitting end pilot signal; performing signal estimation on the receiving end pilot signal and the transmitting end pilot signal by adopting an initial channel estimation algorithm to obtain an initial channel compensation matrix; based on a pre-trained channel compensation matrix updating model, correcting the initial channel compensation matrix to obtain a target channel compensation matrix; and adopting the target signal compensation matrix to perform channel compensation on the receiving end pilot signal to obtain an original pilot signal. According to the technical scheme of the embodiment of the invention, the deployment cost of a physical layer can be reduced, the expandability of signal estimation is improved, the calculation overhead is reduced, the signal compensation precision is improved, the bit error rate of a receiving end is remarkably reduced, the communication rate is improved, and the stability requirements of a current communication system on high rate, low time delay and high reliability can be met.
Owner:CHINA FAW CO LTD

Fast reflector hybrid control method based on multivariable extended state observer

The invention discloses a fast reflector hybrid control method based on a multivariable extended state observer, and relates to the technical field of precise motion control. The control method comprises the following steps: obtaining transfer functions of X and Y axes of a voice coil type fast reflector system by adopting a system identification method, and obtaining a fast reflector model; designing a model auxiliary multivariable expansion state observer according to the obtained fast reflector model; and designing a mixed state feedback controller on the basis of the model-assisted multivariable extended state observer. According to the method, the extended state observer is combined with hybrid control, known model information is added into one observer to design a model-assisted multivariable extended state observer, and X and Y axes are observed at the same time, so that the estimation error of disturbance of each channel is reduced, and the decoupling capability and robust performance of the extended state observer are improved.
Owner:SHANDONG UNIV OF SCI & TECH

Low-voltage cable integrated tracing device

ActiveCN111308394BGuaranteed anti-interference abilitylow costElectrical testingTransformerTransformation unit
The application belongs to the field of cable detection, and discloses a low-voltage cable comprehensive line searching device, which comprises a transmitter and a receiver; the transmitter comprises a power module, a modulation unit, an oscillation unit, a chopping unit, a voltage transformation unit, an isolation protection unit and an output unit; and the receiver comprises a cable identification sensor, a path detection sensor, a line searching signal detection unit, a power supply unit, a filter amplification unit, a power amplifier unit and an acoustic surface output unit. The device integrates cable path testing, cable identification and cable core line searching functions, and is lower in cost, portable and simple to operate, compared with the traditional cable path tester and cable identification instrument which are single-function devices, and can quickly solve the cable line inspection function and identification task in the transformer substation, complete the accurate cable line searching work, improve the work efficiency of the transformer substation cable inspection and replacement, and reduce or even eliminate the safety risk of the transformer substation reconstruction and expansion construction.
Owner:XIAN XU&HUI ELECTROMECHANICAL TECH CO LTD +1

A digital multi-beamforming method based on multi-domain joint

The present invention discloses a digital multi-beam forming method based on multi-domain combination. The multi-domain combined digital multi-beam technology is adopted, and the space-time two-dimensional domain is used for joint anti-interference. A constraint vector pointing to the satellite is formed according to the satellite direction information and array flow, so that the beam formed after anti-interference is aligned with the satellite direction, and a null is formed in the interference direction while protection can be formed in the useful signal direction, so that the signal processing gain brought by the antenna array can be utilized while the interference is suppressed, thereby improving the signal-to-noise ratio of the satellite signal. The broadband correction technology is used for time domain compensation, and the in-band amplitude and phase inconsistency brought by the hardware is corrected, thereby avoiding the influence of the carrier phase difference between different beams brought by the time domain of the space-time multi-beam technology. While improving the anti-interference performance, the positioning accuracy of the multi-beam signal is guaranteed, and the requirement for the hardware in-band consistency is reduced, so that the space-time multi-beam algorithm is simple and feasible in engineering applications.
Owner:CHENGDUSCEON TECH

Workpiece surface profile line convex-concave anomaly detection and quantification method

ActiveCN121705972BHigh precisionPossessing multi-dimensional technical advantagesUsing optical meansManufacturing computing systemsTemplate matchingAlgorithm
The application discloses a workpiece surface profile line concave-convex anomaly detection and quantification method, and belongs to the technical field of precision measurement. The method comprises the following steps: S1, data acquisition; S2, parameter setting; S3, iterative anomaly segment identification; S4, anomaly segment refinement and type judgment; S5, point-level and segment-level quantification of the refined anomaly segment; S6, anomaly quantification result output and visualization; and S7, workpiece surface profile qualification judgment. The workpiece surface profile line concave-convex anomaly detection and quantification method has stronger adaptability to free surfaces and complex structures of non-standard parts, significantly improves detection precision and efficiency, and is significantly superior to traditional threshold methods and template matching methods in terms of precision and noise resistance, is suitable for complex environments in industrial sites, and meets the development needs of intelligent manufacturing for detection technology in terms of multi-scene coverage, high-precision quantification, high-efficiency response and flexible adaptation.
Owner:JIANGSU BRANCH OF CHINA ACAD OF MASCH SCI & TECH GRP CO LTD

A test system and method for high-resistance grounding identification device of distribution network

The present invention discloses a test system and a test method for a high-resistance grounding identification device in a distribution network. A mixed waveform method is adopted to randomly mix real waveforms, simulated waveforms and interference waveforms. The authenticity of the fault waveform is guaranteed based on the measured real waveform, and the simulated waveform ensures the comprehensiveness of the fault environment. Meanwhile, the interference model is taken into consideration, and the anti-interference performance of the device during actual operation can be verified. The recognition accuracy, misjudgment rate and missed judgment rate analysis of the high-resistance grounding identification device under various fault environments are realized, and a reliable basis is provided for the research and development and delivery of the high-resistance grounding identification device, and the technical problem that the existing test methods based on real-time digital simulators and the test methods based on distribution network real laboratories are difficult to meet the requirements of fitting practical applications and flexibly adjusting fault waveforms is solved.
Owner:ELECTRIC POWER RES INST CHINA SOUTHERN POWER GRID CO LTD +1

Submarine node wireless communication anti-interference system and method

PendingCN122001492AMeet stable transmission needseliminate mutual interferenceTransmission noise suppressionData streamInterference (communication)
The invention relates to the technical field of wireless communication, and provides a seabed node wireless communication anti-interference system, which comprises a high transmission rate signal module and a low transmission rate signal module based on a millimeter wave frequency band, the high-transmission-rate signal module is configured to transmit and receive network data streams and is used for seismic data transmission; the serial port signal module is configured to be used for time service signal transmission; the second pulse signal module is configured to be used for clock calibration; the antenna transmitting plane of the high-transmission-rate signal module intersects with the antenna transmitting plane of the low-transmission-rate signal module, and the intersection angle is larger than half of the sum of the half-power beam width of an antenna. The arrangement distance of the wireless communication module can be reduced to a greater extent in narrow working scenes such as seabed nodes so as to better adapt to space requirements and effectively eliminate signal interference, and stable transmission of high-speed seismic data, low-speed control and time service signals is guaranteed. The method provided by the invention has corresponding advantages.
Owner:BGP INC CHINA NAT PETROLEUM CORP +1

Device for improving anti-interference performance of garden electronic fence

The utility model discloses a kind of devices for improving the anti-interference of garden electronic fence, including garden wall, the upper end of garden wall is uniformly equidistant along its length and is equipped with hollow support rod, two hollow support rods between adjacent are connected with metal wire, the both ends of metal wire are all equipped with control insulator;The front side wall of garden wall is equipped with equipment groove, equipment box is assembled in the inside of equipment groove;The device for improving the anti-interference of garden electronic fence is set, structure design is reasonable, filter is assembled on the power output end and signal transmission line of fence equipment body, can be specifically targeted to cut off the interference signal of specific frequency, only allow the frequency signal of electronic fence normal work to pass, greatly improve the anti-interference ability of electronic fence system to power and signal transmission process, reduce the false alarm, the situation of missing report due to interference, significantly improve the protection precision and reliability of electronic fence.
Owner:JIANGSU BAILV LANDSCAPE ENG CO LTD

A high-speed real-time target recognition and tracking device based on multimodal sensor fusion

This utility model discloses a high-speed real-time target recognition and tracking device based on multimodal sensor fusion, relating to the field of intelligent sensing and target tracking technology. It addresses the problems of unreasonable sensor layout, low data fusion efficiency, and difficulty in adapting to complex environments found in existing similar devices. The high-speed real-time target recognition and tracking device based on multimodal sensor fusion includes a housing, a central processing module, a lidar component, a millimeter-wave radar component, a binocular vision component, an ultrasonic sensor group, a power supply module, and a communication module. The multimodal sensor fusion architecture and innovative component structure of this utility model, through optimized sensor layout and data fusion methods, effectively solve the shortcomings of existing devices in target recognition and tracking, achieving high-speed, real-time, accurate, and stable target recognition and tracking.
Owner:BEIJING AEROSPACE TECH OLYMPIC ELECTRONICS TECH

A high-hook capability, anti-interference HBP detection kit and a preparation method thereof

ActiveCN115586339BGuaranteed responsivenesshigh sensitivityEpitopeMicrosphere
The present application relates to the technical field of medical detection, and particularly relates to a high-hook-capability and anti-interference HBP detection kit, which comprises R1 reagent and R2 reagent; 3-[3-(cholylamido propyl) dimethylamino] propanesulfonic acid inner salt and sodium dodecyl sulfate are used to prepare the reagent R1, and by adjusting the use ratio of the two, the mutual cooperation of the two can ensure the reaction sensitivity of the reagent and improve the anti-interference performance of the reagent; two kinds of latex microspheres with different particle sizes are used to coat two kinds of HBP antibodies with different antigen recognition epitopes in the reagent R2, which can not only ensure that the reagent has a wider detection range in the high value area and improve the hook capability, but also ensure the sensitivity of the kit; the activation system adopts the method of combining two activators of NHS and EDC, which can effectively improve the coupling efficiency. Meanwhile, the present application also provides a preparation method of the high-hook-capability and anti-interference HBP detection kit, which does not need centrifugation and resuspension operation steps, and the method operation is simpler and the production cost is lower.
Owner:QINGDAO HIGHTOP BIOTECH

Aviation data bus signal encryption method and system based on FPGA

The present invention relates to the field of signal encryption technology, specifically to an aviation data bus signal encryption method and system based on FPGA, comprising the following steps: based on the input three-dimensional tensor signal data, extracting slices at fixed intervals by the time index of the aviation data bus, and segmenting after the amplitude of the signal channel is sorted in ascending order. In the present invention, the processing logic of matrix decomposition and characteristic curve generation optimizes the feature extraction and dimensionality reduction process, improves the distinguishability and representation ability of feature information, and the key generation method combining dynamic perturbation factors with encryption parameters enhances the randomness and anti-cracking ability of the key, ensures the security of signal transmission, and combines amplitude superposition with frame-by-frame storage to realize the dynamic and efficient signal encryption process, reduce the risk of signal tampering and eavesdropping, and ensures the accurate restoration of signal amplitude through feature reconstruction and point-by-point matching processing in the decryption stage, and ensures data integrity and anti-interference ability.
Owner:XIAN JANGHO ELECTRONIC TECH CO LTD

CAN bus transceiver interface circuit with intelligent fault diagnosis function

This invention discloses a CAN bus transceiver interface circuit with intelligent fault diagnosis function, including a CAN bus transceiver, a microcontroller unit, a CAN bus protection module, a CAN bus status monitoring module, and a fault indication module. The CAN bus transceiver is electrically connected to the microcontroller unit, the CAN bus protection module is connected in series between the transceiver and the CAN bus, the status monitoring module collects differential voltage and single-line absolute voltage, the microcontroller unit identifies various physical layer faults through a fault diagnosis algorithm, and the fault indication module issues an alarm. This circuit solves the problems of passive and untimely fault diagnosis in traditional CAN bus interface circuits, realizing real-time proactive diagnosis of physical layer faults, simplifying fault troubleshooting, and enhancing the reliability of in-vehicle CAN communication and vehicle operation safety.
Owner:YIPU PHOTOELECTRIC (TIANJIN) CO LTD

Anti-interference Diagnosis Method for Dynamic Networking of GIS Sensors Based on K-Nearest Neighbor Algorithm

ActiveCN122131216Bimprove accuracyIntelligent avoidanceInterference (communication)Algorithm
This invention provides a dynamic networking anti-interference diagnostic method for GIS sensors based on the K-nearest neighbor algorithm, belonging to the field of power Internet of Things (IoT) communication technology. The method includes: collecting raw data of multi-dimensional communication link characteristics between GIS sensor nodes within a time sliding window of a set size and sliding step, and performing Z-score standardization; calling a dynamic anti-interference training sample library with online incremental learning and forgetting mechanisms; using an improved K-nearest neighbor classification model that incorporates a time decay factor, determining the current communication link status category in real time by calculating weighted Euclidean distance, employing an adaptive K-value selection strategy based on sample density, and using Gaussian kernel function weighted voting; and finally triggering targeted adaptive frequency selection networking strategies or hierarchical fault warning operations based on the determined category. This invention can effectively distinguish between environmental interference and hardware faults in strong electromagnetic environments of GIS, significantly improving the communication reliability and self-healing capability of wireless sensor networks.
Owner:GLOBAL SCI & TECH (SHANGHAI) CO LTD

Multi-channel wake-up receiver

The present invention provides a multi-channel wake-up receiving device, which can be applied to the field of radio frequency wireless communication technology. The device includes: a first channel, which is used to process a target wake-up signal and an interference signal to obtain an intermediate frequency signal and a direct current signal, and the first channel includes: a comparator, which is used to determine the ratio of the strength of the interference signal to the strength of the target wake-up signal according to the intermediate frequency signal and the direct current signal; a controller, which is used to open the second channel when the ratio of the strength of the interference signal to the strength of the target wake-up signal is higher than a predetermined threshold, and control the first channel to output sequence information corresponding to the target wake-up signal when the ratio of the strength of the interference signal to the strength of the target wake-up signal is lower than a predetermined threshold; a second channel, which is used to output sequence information corresponding to the target wake-up signal when the ratio of the strength of the interference signal to the strength of the target wake-up signal is higher than a predetermined threshold; and a correlator, which is used to generate a wake-up instruction according to the sequence information.
Owner:UNIV OF SCI & TECH OF CHINA

A broadband linear filter

This invention discloses a broadband linear graded filter for spectral imaging, possessing high transmittance and excellent stray light suppression performance. The filter employs a multilayer thin-film structure, including an interference cutoff film system above a substrate and a narrowband filter film system below. The narrowband filter film system achieves high transmittance in the 500-800 nm wavelength range through an optimized design using multiple alternating combinations of high and low refractive index materials. The interference cutoff film system effectively suppresses stray light through its long-pass and short-pass design.
Owner:CHINA JILIANG UNIV

Self-cleaning sewage filtering device

ActiveCN118987721BGuaranteed anti-interference abilityspeed up the flowGravity filtersStationary filtering element filters
The invention discloses a self-cleaning sewage filter device, which belongs to the technical field of sewage filtering equipment. The structure comprises a filter tank and a plurality of water filter buckets stacked in the filter tank, wherein the upper and lower ends of the filter tank are respectively fixed and connected with a water inlet pipe and a drain pipe; a guide groove with a circular cross-section is arranged inside the water filter bucket, a plurality of filter holes are arranged at the bottom of the guide groove, a waste material outlet inclined edge and an air injection pipe II are respectively arranged at the upper and lower ends of the guide groove, and an air injection pipe I is fixed and connected to the side of the filter tank, and the air injection pipe I is connected to the air injection pipe II; the application effectively avoids the blockage of the filter holes by solid debris through the optimization and improvement of the structure of the water filter component, ensures the continuous operation of the equipment, and after the working cycle of the equipment is completed, uses high-pressure airflow to guide and remove the solid debris, and combines with the implementation of multi-stage filtration to discharge the solid debris according to the particle size, so as to facilitate the recycling and further treatment of resources.
Owner:GUOQI URBAN PLANNING (SHANGHAI) CO LTD

Control circuit for cement plant solid waste project adhesive tape conveyor

The embodiment of the utility model provides a control circuit for a cement plant solid waste project adhesive tape conveyor, and belongs to the technical field of adhesive tape conveyor control. The control circuit comprises a main power supply unit, a current transmitter, a control unit, a DCS (Distributed Control System), a field speed detection switch, a field button box switch, a pull rope switch and a deviation switch, and the main power supply unit is used for supplying power to the control circuit; one end of the current transmitter is connected with the main power supply unit and is used for converting alternating current in the main power supply unit into direct current signals; the first end of the control unit is connected with the other end of the current transmitter, and the control unit is used for controlling the adhesive tape conveyor and generating a control signal; the field speed detection switch is connected with the second end of the control unit; the field button box switch is connected with the third end of the control unit; the pull switch is connected with the fourth end of the control unit; the deviation switch is connected with the fifth end of the control unit; and the DCS system is connected with the sixth end of the control unit and is used for outputting a control signal.
Owner:ANHUI CONCH DESIGN & RES INST OF BUILDING MATERIALS CO LTD +1

An intelligent pole-mounted circuit breaker

PendingCN122599312AGuaranteed anti-interference abilityStable alternating drive
This invention relates to the field of power transmission and distribution equipment technology, specifically an intelligent pole-mounted circuit breaker. The pole-mounted circuit breaker includes a mechanism box and multiple solid-sealed poles fixed to the top of the mechanism box. Each solid-sealed pole integrates an arc-extinguishing chamber, and each arc-extinguishing chamber is equipped with a cleaning mechanism for automatically cleaning the contact arc-sintered composite scale layer on the surfaces of the moving and stationary contacts. The mechanism box contains a permanent magnet operating part for controlling the opening and closing of the moving and stationary contacts. Both sides of the mechanism box are equipped with sound-and-light bird-repelling mechanisms, and the mechanism box also contains a drive mechanism for controlling the operation of the two sets of sound-and-light bird-repelling mechanisms. This invention not only enables automatic cleaning of the contact arc-sintered composite scale layer on the surfaces of the moving and stationary contacts during the separation process, but also utilizes the sound-and-light coordinated design of the bird-repelling structure to meet bird-repelling operation requirements under different weather conditions.
Owner:LUOGAO ELECTRIC CO LTD

High temperature slab monitoring device in heating furnace

ActiveCN224744098UImprove heating qualityReduce yield
This utility model discloses a high-temperature slab monitoring device in a heating furnace, comprising a mounting base, a high-temperature monitoring mechanism, an actuator, a cooling mechanism, a protection mechanism, a control box, and an industrial computer. The mounting base is fixed to the furnace wall, with its opening coaxial with the furnace wall's monitoring channel. The actuator drives the high-temperature monitoring mechanism to extend into or retract from the furnace cavity via a motor and transmission components. The high-temperature resistant camera of the high-temperature monitoring mechanism is housed within a pinhole protective probe cover. The cooling mechanism cools the probe cover via water and gas pipelines, with an air filter installed at the gas inlet. The protection mechanism monitors the status using multiple sensors, triggering automatic camera retraction in case of abnormalities. The PLC controller in the control box receives signals and instructions, controlling the actuator according to preset logic. The industrial computer receives, processes, and displays the monitoring data. This utility model solves the problem that existing high-temperature slab monitoring methods in heating furnaces cannot meet the requirements for real-time, accurate detection and data acquisition.
Owner:GUANGXI ZHONGJIN METAL TECH CO LTD +1

A broadband dual-circularly polarized phased array antenna loaded with hybrid decoupling structure

ActiveCN122246484BImprove isolationImprove active standing wave ratioMetal stripsAdhesive
The application discloses a broadband dual-circularly polarized phased array antenna loaded with a mixed decoupling structure and relates to the technical field of antennas.The broadband dual-circularly polarized phased array antenna loaded with the mixed decoupling structure comprises a first metal layer, the first metal layer comprises a Chinese character-shaped metal strip and four pairs of concave Chinese character-shaped metal strips, the first metal layer is arranged on the upper surface of a top layer dielectric substrate, a second metal layer is arranged on the lower surface of the top layer dielectric substrate, the Chinese character-shaped metal strip is connected with the second metal layer through a grounding metal column, a third metal layer is arranged on the upper surface of a bottom layer dielectric substrate, a metal bottom plate is arranged on the lower surface of the bottom layer dielectric substrate, the second metal layer is connected with the metal bottom plate through an isolation metal column, the isolation metal column passes through an intermediate layer prepreg adhesive sheet and the bottom layer dielectric substrate, the third metal layer is connected with the metal bottom plate through a metal probe, and the third metal layer is bonded with the second metal layer through the intermediate layer prepreg adhesive sheet.The application provides a decoupling scheme with high performance, low cost and easy integration.
Owner:CHENGDU UNIV OF INFORMATION TECH

Rotating mechanism of outdoor exercise fitness equipment

InactiveCN119393453Aeliminate corrosionGuaranteed anti-interference abilityBall bearingsDispersed particle separationBall bearingExercise equipment
The invention belongs to the technical field of machinery, and particularly relates to an outdoor exercise fitness equipment rotating mechanism which comprises a rotating shaft component, an upper connecting component is arranged on the upper portion of the rotating shaft component, and a lower connecting component is arranged on the lower portion of the rotating shaft component. The rotating shaft part comprises a ball shaft core, the outer surface of the ball shaft core is connected with a rotating shell in a rolling mode, and the ball shaft core and the rotating shell jointly form a ball bearing. When the device is used, the device serves as a rotatable connecting mechanism, parts at the two ends can be connected together to form a rotating joint, then the free rotating effect is achieved, the ball axis at the axis position and the rotating shell can rotate mutually, and the isolation soft sleeves with the spherical surfaces are arranged on the two sides so that the balls in the device can be isolated from the outside, and therefore the free rotating effect can be achieved. Therefore, external air and water are prevented from entering the area where the internal bearing is located through an expansion gap generated by abrasion, and the problem that the bearing is difficult to rotate and unsmooth due to corrosion of the bearing is avoided.
Owner:HEBEI PETROLEUM VOCATIONAL & TECH UNIV

Power supply cable for large-span overhead laying and manufacturing method thereof

The invention discloses a power supply cable for large-span overhead laying and a manufacturing method of the power supply cable, solves the problem of insufficient electromagnetic shielding capability of a power supply cable in the prior art, and has the beneficial effect of ensuring the shielding performance of the power supply cable, and the specific scheme is as follows: the power supply cable for large-span overhead laying comprises a main wire core, a plurality of groups of wire cores are wound in the circumferential direction of the main wire core, the plurality of groups of wire cores comprise a neutral wire core group and a grounding wire core group, each neutral wire core in the neutral wire core group adopts a metal conductor layer to serve as a shielding structure of a neutral wire and a power supply cable, and the grounding wire core is wound along the winding direction of the plurality of groups of wire cores. At least one communication signal wire core is arranged on at least one side of the grounding wire core group, a tensile partition is arranged on at least one side of the communication signal wire core, a tensile piece is arranged in the tensile partition to ensure the tensile performance of the power supply cable, and the tensile piece is made of a material with an electromagnetic shielding effect.
Owner:TBEA DEYANG CABLE CO LTD

A step-by-step control system for a super-high compression ratio multi-stage ejector

The embodiment of the application discloses a step-by-step injection control system of a super-high compression ratio multi-stage injection device, which comprises a monitoring module, a control module, a plurality of valves and a multi-stage injector. The multi-stage injector adopts a series layout, and the outlet of a front-stage injector is connected with the inlet of a rear-stage injected fluid, so as to realize step-by-step pressurization. The multi-stage injector comprises a fixed first-stage injector and an adjustable injector provided with an adjusting cone mechanism. The injected fluid inlet of the first-stage injector is used for receiving the injected fluid, and the working fluid inlet of each stage of the injector is used for receiving the working fluid. The outlet of the last-stage injector is used for outputting qualified mixed fluid, so as to realize the back injection of the injected fluid in the qualified mixed fluid. The monitoring module collects the actual pressure and the adjusting cone position of a plurality of preset positions in real time. The control module generates a control signal according to the deviation between the actual pressure and the target pressure or based on the system operation mode, so as to control the adjusting valve opening degree and the adjusting cone position.
Owner:SHANGHAI JIAOTONG UNIV +1

A method for analyzing the thickness of cobalt-rich crusts for in-situ detection

The present invention relates to the technical field of deep-sea resource exploration, and in particular to a crust thickness analysis method for in-situ detection of cobalt-rich crusts, comprising the following steps: S1: measuring and recording the magnetic field strength and direction of the current area, and establishing initial magnetic field data; S2: identifying abnormal magnetic field fluctuation areas; S3: shielding the measurement fluctuation area using a magnetic shielding layer preset around the equipment; S4: adjusting the amplitude and phase of the received acoustic wave signal to eliminate or reduce the signal deviation caused by the magnetic field change; S5: obtaining a comprehensive echo signal representing the crust thickness; S6: calculating the thickness of the cobalt-rich crust; S7: generating a crust thickness distribution map. The present invention, through multi-band acoustic wave fusion, real-time magnetic field correction and thickness distribution map generation technology, realizes high-precision anti-interference measurement and intuitive visualization of the thickness of the cobalt-rich crust, providing reliable data support for deep-sea resource development.
Owner:NAT DEEP SEA CENT