3407results about How to "Smooth transmission" patented technology

The invention discloses a video transmission method and system based on streaming processing, and relates to the technical field of video transmission, and the method comprises the steps: collecting a video stream, carrying out the preprocessing, extracting a video frame, packaging the video frame into a picture stream, carrying out the data fragmentation, distributing an initialization path for fragmented data, and calculating an initial traffic proportion; and optimizing path selection and adjusting path flow distribution according to network feedback to obtain a path optimization result, and transmitting the fragmented data according to the path optimization result. Through multi-level feature extraction and key frame selection of video frames, fragmented packaging of video data is realized, a dynamic path optimization technology is combined, path selection and flow distribution are dynamically adjusted based on a Q learning algorithm and a luminescence firefly algorithm, the transmission efficiency is improved, video image processing and a dynamic network optimization technology are fully combined, and the video image processing efficiency is improved. And a brand new solution is provided for efficient and stable transmission of high-definition video streams.

The invention provides a monitoring video transmission method and system based on wireless communication, and relates to the technical field of monitoring video transmission, and the method comprises the steps: obtaining and preprocessing network state data, the network state data comprising bandwidth, time delay and packet loss rate; establishing a network state prediction model based on the LSTM neural network, and predicting a future network state according to the network state prediction model; based on the future network state, a multi-objective optimization algorithm is adopted to perform transmission path selection; and for the selected transmission path, video coding parameters are adjusted, the coding parameters comprise a code rate, a resolution ratio and a frame rate, and a self-adaptive transmission protocol is adopted to dynamically adjust the transmission rate according to a real-time network state. According to the method, different paths can be dynamically selected, network congestion or degradation is avoided, and the video transmission quality and rate are adaptively and flexibly adjusted according to the current network state, so that stable transmission of the video quality under different network conditions is ensured.

The invention relates to the technical field of intelligent water affair management, and discloses a method and system for dynamically adjusting the reporting moment of an NB water meter, and the system comprises NB water meter terminal equipment which is responsible for collecting water meter data in real time and uploading the data to a data management platform through an NB-IoT network; the data management platform is responsible for receiving, processing and storing data from the plurality of NB water meter terminal devices; the reporting moment adjusting module is used for dynamically adjusting the reporting moment of the NB water meter terminal equipment according to the strategy generated by the data management platform; the communication management module is responsible for communication between the NB water meter terminal equipment and the data management platform; the intelligent alarm and event processing module is responsible for monitoring the running state of the system in real time; and an equipment remote control module. By dynamically adjusting the reporting time, the system can reduce unnecessary frequent reporting, especially in a time period when the water consumption is relatively small or relatively stable, so that the power consumption of the equipment is remarkably reduced. Therefore, the battery life of the NB water meter terminal equipment can be prolonged, and the maintenance cost is reduced.

The invention relates to an underwater mechanical arm dragging control method and a mechanical arm system, and is suitable for the fields of ocean exploration, deep sea operation and the like. According to the method, dragging control input of an operator is received through a force feedback handle or virtual reality equipment, and input signals are converted into motion instructions of all joints of the mechanical arm through an inverse kinematics formula. The system is provided with a force sensor and an attitude sensor, feedback data of the underwater environment is collected in real time, the motion trail of the mechanical arm is dynamically optimized based on a PID control algorithm, and high precision and flexibility of the mechanical arm are kept in the complex underwater environment. The system has a multi-degree-of-freedom design and can execute diversified fine operation tasks, a force feedback mechanism ensures that an operator perceives force changes in real time, and the safety and accuracy of operation are improved. The wireless communication module ensures stable transmission of underwater signals, realizes remote operation and real-time feedback, and is suitable for complex underwater operation scenes.

The invention discloses a remote medical data acquisition method and system based on a 5G network, and the method comprises the steps: collecting 5G network state information in real time, calculating a network state information monitoring index, can dynamically adjust a data transmission strategy, and guarantees the timely and safe transmission of key medical data under a complex network condition; meanwhile, a cache and bandwidth cooperation factor and an intelligent cache strategy factor are introduced, the cache depth and bandwidth allocation are dynamically adjusted according to the network state and the medical data priority, intelligent cooperation management of bandwidth and cache is achieved, and continuity of medical data transmission is guaranteed; the constructed early warning model can detect network abnormity in time and trigger alarm, important data are processed preferentially according to an alarm level adjustment strategy, and the abnormity processing and data recovery capability is improved.

The invention discloses a ship lock control system process safety detection and early warning method, and relates to the technical field of ship lock process safety, and the method comprises the steps: S1, data collection unit construction and data collection analysis; the data acquisition unit can comprehensively acquire key process data of the ship lock, the CPU module accurately analyzes and judges potential safety hazards and outputs early warning, the digital quantity input module achieves wide data acquisition, the output module provides protection signals, and the communication module guarantees data communication of all the units. The storage and forwarding unit realizes data decoding, storage and efficient forwarding through a code scanning gun and a two-dimensional code display screen, an intelligent gateway ensures stable transmission of data, an interactive touch screen is convenient for an operator to check a system state, set parameters and query data, and the whole process safety system is independent of an industrial control system, so that the operation safety and reliability of the ship lock are enhanced; the defects of an existing ship lock control system in the aspects of data acquisition and analysis, communication storage, interaction functions, safety guarantee and the like are effectively overcome.

The invention belongs to the technical field of diaphragms, and particularly relates to an organic-inorganic composite spongy porous diaphragm as well as a preparation method and application thereof. The preparation method comprises the following steps: mixing a polyarylether high polymer material, a pore-foaming agent, metal oxide nanoparticles and an organic solvent, and carrying out defoaming treatment to obtain a membrane casting solution; preparing the membrane casting solution into a liquid membrane; the liquid film is placed in a wet air atmosphere for pre-phase inversion, in the pre-phase inversion process, water vapor in wet air and an organic solvent in the liquid film are subjected to preliminary exchange, a through spongy porous structure is induced to be formed in the liquid film, and a spongy porous liquid film is obtained; and placing the spongy porous liquid membrane in an extracting agent for phase inversion to obtain the organic-inorganic composite spongy porous diaphragm. The preparation method provided by the invention not only overcomes the defects of the existing diaphragm in pore channel connectivity and pore diameter control, but also remarkably improves the hydrophilic performance of the diaphragm, and greatly reduces the resistance at the same time.

The invention discloses a tower corrosion state monitoring system and method. The tower corrosion state monitoring system comprises a sensor module, a data acquisition and transmission module, a data processing and analysis module, an early warning and decision module and a visual interface module. The system has the advantages that the corrosion state and the inclination condition of the tower are comprehensively monitored from different angles through multi-sensor fusion, the accuracy and the reliability of the monitoring system are improved through the multi-sensor fusion technology, stable transmission and real-time monitoring of data are achieved in combination with the low-power wide area network (LPWAN) technology and the 5G technology, and the system is suitable for popularization and application. The method is advantaged in that different environmental conditions and monitoring requirements are adapted, flexibility and adaptability of the system are improved, deep learning algorithms such as a convolutional neural network (CNN), a recurrent neural network (RNN) and variants thereof and a multi-modal fusion model are utilized to carry out deep analysis and processing on monitoring data, the intelligent level of the monitoring system is improved, and the monitoring system has a wide application prospect. And the corrosion state, the inclination condition and the development trend of the tower can be accurately evaluated.

The invention discloses a transformer intelligent temperature monitoring device based on a monitoring technology, which relates to the technical field of transformer intelligent temperature monitoring and comprises a temperature sensing module, a data processing module, a fault diagnosis module, a data transmission module and a remote monitoring module. And the temperature sensing module is used for acquiring temperature information of each key part of the transformer in real time. According to the invention, high-precision temperature monitoring is realized through the fiber grating sensor, the anti-interference capability is enhanced, and accurate fault diagnosis is realized through the GRU neural network and the fuzzy logic algorithm. And a dual-channel redundancy communication mechanism is adopted to ensure the stability and safety of data transmission. A Web-based remote monitoring platform improves the operation convenience, and a multi-level alarm function ensures safe operation. The system integration module realizes seamless connection with the existing power monitoring platform, has high adaptability and expansibility, reduces the deployment cost, and improves the equipment management efficiency.

The invention provides a mine personnel positioning method and system based on wireless communication, and relates to the technical field of mine safety, and the method comprises the steps of data collection, model construction, structure prediction, base station position and number definition, UWB base station installation, base station parameter setting, personnel positioning and positioning display. The system comprises a data acquisition module, a model construction module, a structure prediction module, a base station position and number definition module, a UWB base station installation module, a base station parameter setting module, a personnel positioning module and a positioning display module. According to the method, the installation positions and the number of the UWB base stations are defined, the UWB base stations are installed and base station parameters are set according to the coal mine channel prediction number and the terrain prediction structure, personnel positioning and displaying are carried out through the UWB base stations, the signal interference influence of the coal mine channel number and the dynamic change of the terrain structure on radio waves in the channel propagation process is overcome, and the working efficiency is improved. The purpose of improving the positioning accuracy of the underground personnel is achieved.

The invention discloses a method for remotely controlling Android equipment through MQTT messages based on multi-factor identity verification. The method comprises the steps that S1, a two-way multi-factor identity verification system is configured in a remote control server; s2, a client application program supporting an MQTT protocol is deployed on the Android device; s3, issuing a starting or closing instruction of the application program and a modification instruction set by the system through an MQTT protocol; s4, the remote control server starts a multi-factor identity verification system to verify the identity of the user; s5, verifying the identity of the remote control server through a multi-factor verification system; s6, preventing unauthorized access and tampering; s7, the control instruction is decrypted through the MQTT client application program; s8, feeding back an operation result to the remote control server in a message form through an MQTT protocol; and S9, recording the feedback operation result in a server log. According to the invention, by introducing multi-factor identity verification and an MQTT protocol, safe and efficient remote control of the Android device is realized.

The invention discloses an ad-hoc network type dual-mode communication system integrating HPLC and HRF, which comprises a dual-mode communication unit, a central coordinator, a quasi-quantity acquisition module, an adaptive networking module and an automatic route repairing and updating module, and is characterized in that the dual-mode communication unit comprises an HPLC carrier module with a receiving and transmitting end and an HRF wireless module with a receiving and transmitting end; the dual-mode communication unit further comprises a communication modulation module and a signal equalization processing module. The invention relates to the technical field of network communication. According to the ad hoc network type dual-mode communication system integrating the HPLC and the HRF, the whole dual-mode communication is more stable and reliable by adopting communication modulation and signal equalization processing, and the purposes of ensuring the stability of the dual-mode communication, eliminating interference caused by a multipath effect and optimizing the system performance are well achieved; according to the invention, the security of networking communication can be improved by carrying out comprehensive security analysis processing on each sub-node before networking.

The invention discloses a negative-pressure tea-leaf picker and a tea-leaf picking method. The negative-pressure tea-leaf picker comprises a frame body, the air duct is obliquely arranged on the frame body and is used for transporting the sheared tea leaves; the shearing tool is arranged at the lower end of one side, close to the advancing direction of the frame body, of the air duct; an adsorption opening for adsorbing tea leaves is formed in the lower end of the air duct; an air blowing opening is formed in the lower end of one side, far away from the advancing direction of the frame body, of the air duct and is connected with a fan through an air pipe; the air blowing opening comprises an adjusting plate arranged on the side close to the adsorption opening, the adjusting plate is rotationally arranged on the air channel, and the adsorption force at the adsorption opening is adjusted by adjusting the inclination angle between the adjusting plate and the air channel. According to the tea picking machine, the cut tea leaves are adsorbed and conveyed by forming negative pressure at the adsorption opening, the effectiveness of adsorbing and collecting the cut tea leaves is improved, and waste and loss caused by the fact that the tea leaves fall out of an air duct are prevented.

The invention relates to a touch all-in-one machine interaction control method and device, computer equipment and a medium, and the method comprises the steps: receiving image data through a preset video stream protocol, and obtaining a corresponding image data stream; acquiring a real-time network bandwidth condition, and then performing adaptive compression processing on the image data stream based on the real-time network bandwidth condition, and dynamically adjusting image transmission parameters; comprehensively analyzing the image data stream by using a deep learning algorithm, extracting operation characteristics of a user, generating an output control instruction based on the operation characteristics, and further controlling and adjusting image display and / or an equipment state; content information is extracted from the image data stream, and content analysis is carried out by adopting a corresponding content analysis strategy according to the content information, so that real-time display and / or storage are / is carried out according to the analyzed content; and obtaining a user interaction behavior, generating a corresponding adjustment feedback instruction based on the user interaction behavior, and performing personalized adjustment on the user interface. The method has the effect of improving the image transmission quality.

The invention relates to the technical field of cable connection, in particular to a cable connecting mechanism and a cable structure.The cable connecting mechanism comprises a connecting insulating pipe, cable bodies are inserted into the two ends of the connecting insulating pipe respectively, a plurality of cable cores are arranged in the cable bodies, a plurality of metal sleeves are fixedly arranged in the connecting insulating pipe, and the cable cores are matched with the metal sleeves in an inserted mode; a plurality of pressing assemblies are arranged on the connecting insulating tube, semicircular blocks are arranged on the pressing assemblies, two insulating blocks are fixedly arranged on the semicircular blocks in a symmetrical structure, the insulating blocks sequentially penetrate through the metal sleeve and the connecting insulating tube to extend to the outside, two protection assemblies are fixedly arranged on the outer wall of the connecting insulating tube in a symmetrical structure, and protection blocks are arranged on the protection assemblies. The outer peripheral walls of the two ends of the connecting insulating tube are sleeved with clamping assemblies. The cable connection process is simplified, the connection efficiency is improved, the connection stability and reliability are improved, the sealing performance and safety of cable connection are ensured, the stability and anti-falling performance of cable connection are improved, and the cable body is prevented from falling off or loosening accidentally.

The invention discloses a carbon ceramic composite conductive microsphere, a ceramic resistor and a preparation method, and belongs to the technical field of production of special materials of electrical equipment, and the method comprises the following steps: sequentially dipping porous mullite in a precursor solution of carbon and slurry containing carbon black, and carrying out drying treatment and carbon burying sintering to obtain the carbon ceramic composite conductive microsphere; the preparation method comprises the following steps: preparing a ceramic raw material, performing vacuum-assisted centrifugal impregnation on the ceramic raw material and slurry consisting of a binder in pug consisting of the ceramic raw material and a surfactant, sequentially performing drying and glue discharging treatment, primary isostatic pressing forming and air pressure sintering, cooling to room temperature, and performing mechanical treatment and electrode spraying to obtain the ceramic resistor. Impregnation improves the dispersibility and uniformity of the carbon material in the porous mullite to form a continuous conductive path, the carbon black-containing slurry improves the conductivity of the ceramic resistor, carbon-buried sintering generates in-situ carbon with abundant types, the combination of carbon and a ceramic interface is promoted, and the oxidation resistance, mechanical properties and electrical properties of the ceramic resistor are improved.

The invention discloses a string type network energy storage converter control method, and the method comprises the steps: enabling an energy storage converter to take an SOC mean value as the feedback of an SOC equalization ring, and obtaining an SOC equalization ring output value; superposing the output value of the secondary frequency modulation ring, the output value of the SOC equalization ring and the output value of the primary frequency modulation ring as an active given value, and obtaining a reference value of the frequency through a VSG active frequency control ring; taking the output value of the secondary voltage regulating ring as a reactive given value, obtaining a reference value of a VSG reactive amplitude control ring through the primary voltage regulating ring, and obtaining a reference value of voltage through the amplitude control ring; inputting the obtained reference value of the frequency and the reference value of the voltage into a voltage and current double closed loop to obtain an output signal for following the reference values, and further generating a driving signal for controlling a switching tube of the energy storage converter; according to the invention, the communication load rate can be reduced, when large frequency and voltage fluctuation occurs, the voltage and frequency stability problem can be independently solved, the self-recovery control of secondary regulation is realized, and the frequency and the output voltage of the system are dynamically regulated in real time.

The embodiment of the invention provides a spiral conveying device for discharging salt materials, and relates to the technical field of salt material conveying. A spiral conveying device for salt discharging comprises a conveying mechanism, a vibration amplitude adjusting mechanism located at the front end of the conveying mechanism, and a vibration anti-blocking mechanism located at the upper portion of the front end of the conveying mechanism and the rear end of the vibration amplitude adjusting mechanism. The conveying mechanism is lifted upwards to drive the vibration amplitude adjusting mechanism, and the vibration amplitude adjusting mechanism adjusts the vibration amplitude of the vibration anti-blocking mechanism. The vibrating and scattering degree of the salt materials is adjusted according to the lifting height of the conveying cylinder, the problem that the salt materials are caked and accumulated in the feeding hopper in the conveying process can be effectively solved, uniform distribution of the salt materials is promoted, and the stability of the salt materials in the conveying process is improved.

The invention discloses a remote video monitoring data transmission method, and the method comprises the steps: collecting visual video information through a robot camera, and transmitting the visual video information to a remote power plant monitoring center through a HDMI interface, an encoder, a 5G-CPE, a decoder and other links. The 5G-CPE uses MEC, 5G slicing and SRT technologies to adjust resource allocation according to network conditions and requirements, and defines configuration slices and priorities. A network monitoring component is deployed to monitor slice loads in real time, a load threshold value is set for each slice, and a resource adjustment strategy is triggered when the loads exceed the threshold values. And resources are dynamically reallocated after analysis and evaluation, so that sufficient and optimized utilization of high-load slice resources is ensured. Performance is continuously monitored and feedback adjustment is performed, network adaptability and flexibility are improved, key video streams are ensured to be transmitted preferentially, and power plant inspection requirements are met.

The invention is suitable for the technical field of data transmission, and provides an illumination lamp data transmission control method, which comprises the following steps of: acquiring data, state data and physiological health data by an illumination lamp; different priorities are set for each type of data, and different data are processed by adopting corresponding compression strategies; a multi-hop transmission ad hoc network is established between the lighting lamp and other nearby lighting lamps, and a network topology structure is dynamically adjusted; the lighting lamp evaluates an optimal sequence of various transmission paths transmitted to the monitoring center based on real-time information in the ad hoc network, and sets corresponding transmission paths and transmission strategies for different data according to priorities; the lighting lamp transmits the data with different priorities to the monitoring center hop by hop through a selected transmission path according to a set transmission strategy; and the monitoring center receives the data of the lighting lamps and carries out corresponding processing according to the priority of the data. According to the invention, the problems of stability, real-time performance and priority management of data transmission in an existing complex mine environment are solved.

The invention relates to the technical field of power operation and maintenance management, and particularly discloses a power operation and maintenance big data-based monitoring method and system, and the system comprises a data collection and transmission module, a data storage and processing module, a remote monitoring and alarm module, a data analysis and prediction module, and an optimization decision and maintenance module. A power grid acquisition device is arranged on an electric power operation and maintenance site, operation parameters, state parameters and environmental parameters of electric equipment are acquired in real time, data are efficiently and stably transmitted to a server for storage and processing by utilizing data transmission equipment and a bus technology, comprehensiveness and real-time performance of the data are ensured, and a fault prediction probability formula is calculated to obtain a fault prediction result. Historical fault rates and regional importance scores are comprehensively considered, potential fault regions are recognized in advance, preventive measures are taken in time, an energy consumption efficiency index formula is utilized, the energy consumption level of electric equipment is quantitatively evaluated, high-energy-consumption equipment is recognized, energy conservation improvement is guided, and energy conservation and consumption reduction are assisted.

The invention discloses an on-line temperature monitoring system for a transformer substation, and relates to the technical field of monitoring systems, thermocouples, thermal resistors and infrared sensors, the most suitable sensors are selected according to different equipment and environment conditions, wired Ethernet and wireless communication are supported, data can be stably transmitted under different network conditions, and the temperature monitoring system is suitable for monitoring the temperature of the transformer substation. The monitoring center can display the equipment temperature state, the trend chart and the alarm information in real time, an operator is helped to know the equipment condition in time, when the temperature exceeds a set threshold value, the system can automatically trigger alarm, the user interface module displays data through a chart and graph visualization tool, the information is easier to understand and make decisions, and through comparison with historical data, the information can be displayed more accurately. The system can identify the long-term trend of temperature change, trend analysis helps to find out abnormal problems gradually appearing in advance, and data acquisition and processing, stable data transmission, real-time alarm and monitoring and a historical data comparison model improve the operation safety and stability of the substation equipment.

The utility model relates to the technical field of gear deburring, and discloses a gear deburring device which comprises an operation table, a conveying mechanism is arranged on the inner top wall of the operation table, a clamping limiting mechanism is arranged at the top of the conveying mechanism, a supporting frame is fixedly connected to the top of the operation table, and sliding grooves are formed in the two sides of the supporting frame. Sliding blocks are slidably connected into the two sliding grooves, one side of one sliding block is fixedly connected with a third motor, the output end of the third motor is fixedly connected with a rotating shaft, and the outer surface of the rotating shaft is fixedly sleeved with a brush roller. According to the gear deburring device, the clamping and limiting mechanism, the second motor and the brush roller are arranged, the clamping and limiting mechanism can clamp and limit gears of different sizes, the gears are stably conveyed, the height of the brush roller is flexibly adjusted, and the situation that the brush roller polishes the gears too deeply to damage the gears or polishes the gears too shallow to affect the deburring effect can be prevented; and the effects of stable gear transmission and efficient and flexible deburring are achieved.

The utility model discloses equipment for screening building materials in the technical field of building materials, which comprises a screening box, a screen mesh, a feed port, a first discharge port, a second discharge port, a supporting seat, a scraper mechanism and a vibrating mechanism, the feed port is arranged at the top of the screening box, the first discharge port is arranged on the side wall of the screening box, and the second discharge port is arranged on the side wall of the screening box. The second discharging port is formed in the bottom wall of the screening box, a cavity is formed in the screening box, the screen is arranged in the cavity, the feeding port, the first discharging port and the second discharging port are communicated through the cavity, the scraper mechanism comprises a scraper, a push rod and a power mechanism, and the power mechanism drives the scraper to move back and forth on the upper surface of the screen towards the first discharging port. Supporting legs are arranged at the bottom of the supporting seat, a cavity structure sleeved with the supporting legs is arranged at the top of the vibration mechanism body, the vibration mechanism is arranged at the bottom of the supporting seat, and a convex block of the vibration mechanism rotates to drive the screening box to vibrate up and down. The technical problems that a screen of an existing device is prone to being blocked, and the screening efficiency is low are solved.

The invention discloses a folding telescopic device and a using method, and relates to the technical field of inspection robots. According to the folding telescopic device disclosed by the invention, the power assembly is driven by the motor, so that multidirectional folding and telescopic functions are realized; a worm gear, a worm and a disc spring structure are utilized, so that stable transmission and self-adaptive adjustment capability are ensured; vertical lifting of the holder and camera shooting equipment connected with the holder is achieved through the tape winding shaft and the lifting tape, and flexible folding in the horizontal direction and the vertical direction is achieved in combination with rotation of the bamboo joint base and the worm wheel cushion block. The device is compact in structure, easy and convenient to operate and widely applied to the fields of inspection robots and the like, the shooting range and flexibility of the camera are remarkably improved, and then the inspection efficiency and precision of the inspection robot are improved.

The invention relates to a road and bridge construction concrete strength detection device which comprises a fixing assembly for fixing a to-be-detected concrete block, a torsion power assembly for performing torsion deformation on the to-be-detected concrete block and a fixing seat for mounting and fixing, the pressure applying mechanism is used for carrying out a top pressure test on the central position of the to-be-tested concrete block, the torsion adapting mechanism is used for being matched with the pressure applying mechanism to ensure that pressure is stably applied to the to-be-tested concrete block in the pressure applying process, and the pressure applying mechanism is arranged at the central position of the upper end of the to-be-tested concrete block; the bottoms of the two ends of the pressure applying mechanism are matched with a to-be-tested concrete block through a torsion adapting mechanism, and a pressure adjusting mechanism used for adjusting the pressure of the torsion adapting mechanism and ensuring the stability of the torsion adapting mechanism is installed in the pressure applying mechanism. And when pressure is applied in a concrete torsion process, a pressure piece often slips to cause inaccurate experimental data.

The invention relates to the technical field of bridge support detection, in particular to a bridge support detection auxiliary device which comprises a positioning unit and two symmetrical detection units. A first clinging frame and a second clinging frame are matched to enable a center shaft of a semicircular gear ring to be aligned with a center shaft of an adjacent bridge support; the winding drum is driven to rotate through the fourth motor, so that the steel wire rope is wound, the detection probe is driven to rotate by 180 degrees around the rubber support, in the rotating process, the detection probe completely detects the rubber support through ultrasonic waves, and in the whole process, workers do not need to be conveyed to the position close to a bridge support through a lifting machine; the rubber support surface detection device is simple in structure and convenient to operate, large use space of a bridge is prevented from being occupied, normal use of the bridge is not affected, the whole detection process can be completed only by a single worker, the detection difficulty is reduced, the whole rubber support surface can be detected automatically in the detection process, the detection difficulty is further reduced, and the detection time is shortened.

The utility model relates to the field of cable transmission, and discloses a multi-shielded cable, which comprises a polyurethane damping layer, a transmission copper conductor is arranged in the middle of the inner side of the polyurethane damping layer, a transmission copper sleeve is fixedly connected outside the transmission copper conductor, a cooling support layer is fixedly connected outside the transmission copper sleeve, and the cooling support layer is fixedly connected outside the polyurethane damping layer. The inner side of the polyurethane damping layer is fixedly connected with a tensile colloid supporting layer, the tensile colloid supporting layer is connected with the cooling supporting layer through multiple shielding assemblies, and the outer side of the tensile colloid supporting layer is connected with the inner side of the polyurethane damping layer through multiple supporting compression-resistant assemblies. According to the utility model, shielding is carried out in a multi-layer manner, so that the transmission stability of the internal cable is ensured, the transmission efficiency is improved, the anti-pressure capability of the cable is improved, the blocking of power transmission caused by external extrusion of the internal cable is avoided, and the stability is further improved.

The invention relates to the technical field of network optimization, in particular to a network data management system based on intelligent flow control, which comprises a flow partitioning and sample extracting module, a flow partitioning and sample extracting module, a flow partitioning and sample extracting module, a flow partitioning and sample extracting module and a flow partitioning and sample extracting module, and generating a load feature sample set according to the screening result. In the invention, through extraction of the time sequence information and division of the sub-traffic segments, the network traffic data is subjected to packet management, and the loads of the source node and the target node are accurately marked and screened, so that more accurate load characteristic data is generated, and unnecessary data redundancy is avoided. In the calculation of the load weighted value, the prediction precision of the data flow load is further improved by combining the dynamic priority weight and the multi-dimensional weight mechanism of the flow variable quantity, so that the trend change in the subsequent time slice can be estimated more scientifically.

The invention discloses a camera shooting optical lens. The camera shooting optical lens is composed of a first prism with positive refraction power, a first lens, a second lens, a third lens, a fourth lens and a fifth lens which are sequentially arranged from the object side to the image side. A reflecting surface is arranged between the object side surface and the image side surface of the first prism, the first lens, the second lens and the third lens form a first lens group, the fourth lens and the fifth lens form a second lens group, and the second lens group can be movably adjusted along the optical axis of the shooting optical lens, so that the shooting optical lens is switched between a first state and a second state. Wherein the focal length of the shooting optical lens in the first state is maximum, and the focal length of the shooting optical lens in the second state is minimum; the focal length of the shooting optical lens in the first state is fA, the image height of the shooting optical lens is IH, and the following relational expression is satisfied: fA / IH is greater than or equal to 4.00 and less than or equal to 4.80. The shooting optical lens can realize large-aperture periscopic design, and has good optical performance.