67results about How to "Reduce transmission effect" patented technology

The invention discloses a signal channel estimating method, which is used for reducing the number of pilot frequencies through compressive sensing in a mobile broadband communicating system, is realized by reducing the required number of pilot frequency symbols in the signal channel estimation of the system as well as on the basis of the principle that the compressive sensing technique can recover sparse signals with less measuring values and the sparse characteristic of the signal channel of the mobile broadband communicating system, and can ensure the signal channel estimation performance of the system. The signal channel estimating method can well solve the defect in the prior art that the sparse characteristic of the signal channel is not considered in the signal channel estimating ways of the prior art and consequently more pilot frequencies consumption is required, and improves the traditional methods as follows: by utilizing the sparse signal channel characteristic, a new signal channel estimating method is designed to reduce the number of pilot frequencies, greatly reduce the energy consumption of the system and ensure effective signal channel estimation. The signal channel estimating method has well popularization and application prospect.

The invention discloses a heavy-duty overrunning clutch, which comprises an outer ring, an inner ring, a plurality of rollers and a retaining frame. The retaining frame comprises a support ring I, a support ring II and a plurality of support columns corresponding to the rollers. Spring plates are fixedly arranged on the support columns along the axial direction and are used for applying pre-tightening force on the rollers along the engagement direction of an engagement slot. The direct processing of a limit seat on the outer ring can be avoided, the working efficiency can be increased, the processing cost can be reduced, the service life can be prolonged, and the transmission effect can be guaranteed. Moreover, relevant components can be replaced easily after being damaged, the outer ringneeds not to be rejected as a whole, and the cost of maintenance and use can be reduced. The axial length of the overrunning clutch and the rollers can be increased theoretically indefinitely, the engagement length can be increased, and thus the bearing capacity of the overrunning clutch can be improved. Meanwhile, the pre-tightening force can be applied at multiple points of the rollers according to needs, and the limiting balance for the rollers can be guaranteed while the axial length is ensured, so that the rollers cannot deviate from the axial line of the inner ring. Therefore, the stable operation of the overrunning clutch can be ensured, and mechanical failure can be avoided.

The invention discloses a high-ion-conductivity sulfide solid electrolyte based on a liquid phase method and a preparation method thereof. The preparation method comprises the following steps: (1) adding raw materials at least comprising Li2S and P2S5 and a solvent into a stirring container, stirring, performing vacuum filtration, and drying under reduced pressure to obtain a mixture a; (2) filling the mixture a in the step (1) into a ball milling tank, vacuumizing, and performing ball milling to obtain a mixture b; (3) and taking out the mixture b in the step (2) from a glove box, and performing heat treatment under the protection of inert atmosphere to obtain the high-ion-conductivity sulfide solid electrolyte material. According to the invention, the porous structure introduced by solvent and crystallization solvent molecules in the obtained sulfide solid electrolyte is eliminated by secondary ball milling under reduced pressure after drying under reduced pressure, so that the high-ion-conductivity sulfide solid electrolyte is obtained. The invention further adopts a hot pressing or hot paired roller mode for molding, thereby enhancing the combination effect of the sulfide solidelectrolyte and further improving the ionic conductivity.

The invention belongs to the technical field of multi-network convergence transmission, and discloses a multi-network convergence transmission system and transmission method based on QoS. The method comprises the following steps: classifying service types; scheduling a service queue; carrying out MPTCP retransmission proxy optimization; realizing multicast on-demand scheduling; realizing multilink multicast retransmission; and carrying out multicast ARQ and retransmission design. In a multi-link environment, the TCP service performance of a terminal user is improved, a service flow-based scheduling method and a multicast self-adaptive scheduling method are designed, and the high-quality requirement of the terminal user on network application is met; an MPTCP transmission mechanism is applied to wireless multi-network convergence, an MPTCP multi-path transmission protocol is used as a tunnel packaging mode between an integrated terminal and a convergence server, the multi-link cooperative scheduling capacity is achieved through congestion control and flow control of the MPTCP, the overall throughput of a TCP service system is improved, and the data transmission reliability is enhanced.

The invention discloses a separable transformer type double-stator brushless double-fed motor which comprises an outer stator, a cup-type rotor, an inner stator and a rotating shaft sequentially from outside to inside. The outer stator, the cup-type rotor and the inner stator are coaxial and independent from one another, the rotor is fixed on the rotating shaft, an outer air gap is formed between the outer stator and the cup-type rotor, and an inner air gap is formed between the rotor and the inner stator. The separable transformer type double-stator brushless double-fed motor is of a novel motor structure provided based on a brush double-fed motor operating principle through structural equivalence. A separable transformer composed of the inner layer of the rotor and the inner stator transmits rotor current and voltage of the double-fed motor to the side of the inner stator in a contactless mode, and accordingly functions of an existing brush double-fed motor are realized completely; however, an electric brush slip ring, low in reliability and needing scheduled maintenance, in the brush double-fed motor is omitted, thus the separable transformer type double-stator brushless double-fed motor has high application value in high-reliability, maintenance-free, low-cost variable-frequency speed control occasions.

The invention provides a multiple access method of an air vehicle cooperative information network, comprising a time-frequency space domain joint signal transmission system, a transmission target space domain determining method and a specific access procedure, wherein the time-frequency space domain joint signal transmission system determines a transmission frame structure applicable to a high-dynamic environment between nodes, and achieves the time-frequency space domain joint transmission of a transmission frame by means of discrete pulses. According to the transmission target space domain determining method, in a specific transmission process, a sending node is used for determining an antenna coverage area where a receiving node is located, thereby supporting the sending node to determine an antenna usage scheme when transmitting the specific information. The node access procedure is used for determining access procedures in specific node information transmission, network maintenance and other processes in the establishment and operation processes of the cooperative information network. By adoption of the multiple access method, the requirement of establishing the cooperative information network with an increasing number of inter-platform cooperative working nodes and increasingly complex task modes in the air / space high-speed motion can be met, and the simultaneous access delay of multiple nodes can be effectively shortened.

The invention discloses a low-temperature plasma induced membrane-type artificial lung graft modification method. The modification method includes the following steps that poly 4-methyl-1-amylene membrane materials for a membrane-type artificial lung are placed into a cavity of a plasma processing instrument, working gas is any one or two of pure ammonia gas, pure oxygen, pure argon and pure carbon dioxide, the pressure of the working gas is kept to be 20 Pa, the materials are processed for 1-5 min at the discharge power of 30-300 W, the gas flow is 30 ml / min-120 ml / min, phosphoryl choline compound steam is led into the cavity to induce vapor phase grafting, the steam pressure is stabilized to be 20 Pa, and the materials are processed for 1-5 min at the discharge power of 30-300 W. According to the method, the artificial lung membrane materials are modified through the low-temperature plasma technology, the process is simple, consumed time is short, the efficiency is high, the energy consumption is low, the biocompatibility of a poly 4-methyl-1-amylene (PMP) membrane is obviously improved, and the transmission performance of O2 and CO2 is slightly reduced compared with that before modification, however, the method still has wide medical application prospects.

A bicycle derailleur is arranged on a linkage member and includes a movable member, a chain guide member and a resistance applying member. The movable member is connected to linkage assembly. The chain guide member is pivoted to the movable member. The resistance applying member is connected between the movable member and the chain guide member. The resistance applying member includes a pivot base, a first engagement member and a second engagement member. The pivot base includes a pivot part and a pressing part. The pressing part extends radially outwardly from the pivot part. The first engagement member is pivoted to the pivot part and pressed by the pressing part. The second engagement member is unidirectionally engaged with the first engagement member so that the first engagement member is only rotatable with respect to the second engagement member in a rotatable direction. When the chain guide member moves in a direction with respect to the movable member, the pivot base and the first engagement member rotate relative to the second engagement member. When the chain guide member rotates in a reverse direction, the first engagement member is pressed by the second engagement member and is pushed to rotate relative to the pivot base.

The invention relates to a gearless cable lift with a drive disk mechanism which is dually wound by several bearer cables, comprising a counter disk (3), an elevator car (6), guide tracks for the elevator car (6) and a counter weight, especially for installation without a machine room. According to the invention, the bearer cables are guided in semicircular grooves and the ratio of the drive disk diameter to the nominal diameter of the bearing cables is <= 40.

The invention relates to a multi-functional label transferring device for labeling in a die. Through the arrangement that multiple rows of lifting connecting platforms are arranged inside, single rowsof supporting frames are arranged outside, and a translation supporting frame passes through the single rows of supporting frames, the interior space of the single rows of supporting frames is sufficiently used, and the processing precision and the operation speed are improved, so that high-speed operation of the device is facilitated. A translation sliding pair mounted on each of two sides of the translation supporting frame is taken as a guiding device for the multi-functional label transferring device for labeling in the die so as to prevent the deviation in the moving process and ensure stable and accurate operation. The central axes of telescopic rods of lifting cylinders and that of a translation lifting supporting seat are on the same straight line, so that stable lifting can be ensured, and the deviation is avoided. Compared with the prior art, the multi-functional label transferring device has the function that a label is transferred through side pressing and vertical pressing by a device, and a multi-functional production line for labeling in a die is only equipped with a label transfer manipulator.

The invention provides a low-smoke and low-toxicity large-depth longitudinal watertight coaxial cable, which mainly comprises a central conductor unit, a plurality of coaxial inner conductor units anda cable outer sheath, wherein the plurality of coaxial inner conductor units are arranged around the central conductor unit; each of the coaxial inner conductor units and the central conductor unit comprises a conductor layer, an insulating layer, a shielding layer and an inner sheath from inside to outside; each insulating layer is extruded between the corresponding conductor layer and shieldinglayer in a pushing manner; the parts between the coaxial inner conductor units are uniformly filled with cable core water-blocking glue; and the outer sides of the plurality of coaxial inner conductor units are filled with a non-woven outer wrapping tape to be wrapped into the cable, are filled with the water-blocking glue and then are sleeved with the cable outer sheath. The low-smoke and low-toxicity large-depth longitudinal watertight coaxial cable is mainly applied to an underwater large-depth and high-water pressure environment for high-frequency signal transmission, so that the longitudinal water blocking capacity is improved, nonoccurrence of water leakage when the cable is damaged or broken is ensured, radio frequency communication in a deep water environment is ensured, and the low-smoke and low-toxicity large-depth longitudinal watertight coaxial cable has underwater large-depth longitudinal water tightness, has certain flame-retardant property and is low in smoke and low intoxicity during combustion.

The invention discloses an internal transmission furnace bottom assembly with a large gear ring, which comprises a furnace bottom case and an arch tray, wherein a chute is arranged between the furnace bottom case and the ash tray, rolling balls for supporting the ash tray to rotate relatively to the furnace bottom case are arranged in the chute, and the outer side of the chute is provided with the large gear ring fixed on the ash tray. The internal transmission furnace bottom assembly is characterized in that a chute cooling device used for reducing the temperature inside the chute is arranged under the ash tray. The internal transmission furnace bottom assembly disclosed by the invention has the advantages of reasonable design and simple structure, and the reformation can be carried out on the furnace bottom assembly of the existing coal gas generator, so the chute and the rolling balls arranged in the chute can work in a proper temperature range, the operation of dismounting and maintaining the furnace bottom assembly through machine halt is effectively avoided, the normal continuous proceeding of the production operation is ensured, and the production efficiency is sufficientlyimproved.

The invention discloses a modular safety programmable logic controller comprising a main control module, an input module, an output module and safety modules, wherein the input module is connected to the safety modules, the main control module is connected to the safety modules; the safety modules are connected to the output module; the output module is connected with external safety equipment; the main control module comprises a switch module and a processor module; the processor module comprises a functional block storage unit and a ladder circuit; the switch module at least comprises a switch unit; the switch unit is provided with N pairs of N switches connected with a serial communication line. The switch module and the processor module form a start-type serial communication network, and influences of interaction, crosstalk and ground wire bounce are not considered. The transmission performance of a bus will not be decreased when the number of connection modules is increased. In addition, serial communication lines between each safety module and the switch module and between the processor module and the switch module can serve as multiple parallel circuits, and the optimal data communication capacity is ensured.

The invention provides a sectional type bipolar emission guide rail for dynamic wireless charging, belongs to the technical field of wireless charging, and solves the problem that the guide rail useslots of magnetic cores is difficult in heat radiation and not easy to mount, or dismount for maintenance. The sectional type bipolar emission guide rail comprises a power supply, a magnetic coupling emission guide rail mechanism and a secondary power converter, and is main used for dynamic wireless charging.

The invention discloses a compound, a display panel and a display device. The compound has a structure as shown in formula 1; and in the formula 1, X, a1, a2, b<1> to b<16>, L<1>, L<2>, Q<1>, Q<2>, n1and n2 are respectively defined in the specification. The compound provided by the invention can be used for the display panel and the display device.

The invention discloses a load transmission control method and device. The control method includes: receiving a trigger event reported by a proxy server, including a first transmission delay of a first member transmission path and a second transmission delay of a second member transmission path, and When one is greater than the first delay threshold, report the trigger event; initiate a request to the packet data network gateway and obtain its feedback network information; control the proxy server to execute the corresponding load according to the first and second transmission delays and network information distribute. Through the above scheme, the present invention can more accurately instruct the congested member transmission paths to implement a specific load distribution scheme, so that the WiFi network can be used to share the load of the 4G network under the premise of ensuring good communication quality, so that the load of each member transmission path The transmission cost is minimized, reducing the communication cost and greatly improving the user's service experience.

The invention relates to a converter transformer control cabinet air switch temperature on-line monitoring device, which comprises a transmitting end and a receiving end in signal connection with thetransmitting end; the transmitting end comprises a sensor, a transmitting end control module and a transmitting end 433MHz module, the sensor is in signal connection with the transmitting end controlmodule, and the sensor transmits acquired temperature data to the transmitting end control module; the transmitting end control module is in signal connection with the transmitting end 433MHz module,data subjected to digital-to-analog conversion through the transmitting end control module are transmitted to the transmitting end 433MHz module, and the acquired temperature data are sent to the receiving end through the transmitting end 433MHz module. By adopting the technical scheme, the data security is improved; the monitoring cost is reduced; the workload of workers is reduced, and the safety risk is reduced, so that the work of the converter transformer can be safely and normally operated.

The embodiment of the invention provides a communication method and device. The method comprises the steps of obtaining first transmitting power of each carrier in N carriers; Wherein N is an integergreater than or equal to 1; When the sum of the first transmitting powers of the N carriers is greater than the maximum transmitting power, adjusting the first transmitting powers of M carriers in theN carriers according to the service priority corresponding to the signal transmitted by each carrier in the N carriers so as to reduce the sum of the first transmitting powers of the N carriers; Wherein M is an integer greater than or equal to 1, and N is greater than or equal to M. When the first transmitting power of the carrier wave is adjusted, the service priority corresponding to the signaltransmitted by the carrier wave is referenced; Therefore, the performance requirements of the services with different service priorities can be met, the transmission performance requirements of the services with high service priorities are preferentially guaranteed when the power is adjusted, the services with the high service priorities have more appropriate transmitting power, and therefore thereceiving reliability is higher, the coverage range is larger, and the requirements of the Internet of Vehicles services are met.

The invention discloses a high-chlorine fly ash cementing material as well as a preparation method and application thereof. The preparation method of the high-chlorine fly ash cementing material comprises the following steps: (1) respectively carrying out ball milling on high-chlorine fly ash, slag and mineral micro-powder for 4-8 hours; (2) uniformly mixing the ball-milled high-chlorine fly ash, slag and mineral micro-powder; and (3) adding an early strength agent and an alkali activator into the mixture obtained in the step (2), and uniformly mixing to obtain the high-chlorine fly ash cementing material. The potential volcanic ash activity of the high-chlorine fly ash is excited through a composite activation process, namely physical and chemical activation methods, so that the optimal effect of curing chloride ions is achieved. According to the high-chlorine fly ash cementing material disclosed by the invention, the raw material components in the cementing material are mutually cooperated and excited to form rich hydration products, namely Friedel salt, AFt crystals and C-S-H gel, so that the chemical binding capacity of minerals and chloride ions in the hydration process and the physical adsorption capacity of the hydration products to the chloride ions are promoted, and meanwhile, the mechanical property of the high-chlorine fly ash cementing material is also improved.

The embodiment of the invention provides a GOA circuit and a display panel. A compensation module is adopted to detect the threshold voltage of the switch thin film transistor in the random logic address selection module in the shutdown stage, and then the detected threshold voltage is compensated to the previous level transmission signal; therefore, the influence of threshold voltage offset of a switching thin film transistor in the random logic address selection module on the charging rate of the node Q can be avoided, the transmission capability of the thin film transistor cannot be reduced, and the output stability of the GOA circuit is further facilitated.

The invention discloses a silicon-based material and a battery containing the material, the silicon-based material has a core-shell structure, the core-shell structure comprises a core material and a shell material, the core material comprises the silicon-based material, and the shell material comprises lithium salt modified graphene. According to the invention, the surface of the silicon-based material is coated with the lithium salt modified graphene to form the core-shell structure, and the surface of the silicon material is coated with the lithium salt modified graphene, so that the volume stress generated by the silicon material in the lithium ion intercalation / deintercalation process can be effectively relieved. Meanwhile, the graphene can also synergistically improve the conductivity of the electrode, so that the cycle performance, the specific capacity, the charge-discharge efficiency and other electrochemical performance of the battery are improved.

The invention discloses a heavy-duty overrunning clutch, which comprises an outer ring, an inner ring, a plurality of rollers and a retaining frame. The retaining frame comprises a support ring I, a support ring II and a plurality of support columns corresponding to the rollers. Spring plates are fixedly arranged on the support columns along the axial direction and are used for applying pre-tightening force on the rollers along the engagement direction of an engagement slot. The direct processing of a limit seat on the outer ring can be avoided, the working efficiency can be increased, the processing cost can be reduced, the service life can be prolonged, and the transmission effect can be guaranteed. Moreover, relevant components can be replaced easily after being damaged, the outer ringneeds not to be rejected as a whole, and the cost of maintenance and use can be reduced. The axial length of the overrunning clutch and the rollers can be increased theoretically indefinitely, the engagement length can be increased, and thus the bearing capacity of the overrunning clutch can be improved. Meanwhile, the pre-tightening force can be applied at multiple points of the rollers according to needs, and the limiting balance for the rollers can be guaranteed while the axial length is ensured, so that the rollers cannot deviate from the axial line of the inner ring. Therefore, the stable operation of the overrunning clutch can be ensured, and mechanical failure can be avoided.

A method for setting the trigger power of transmitter diodes that transmit data via optical paths allows the transmission power to be adjusted and adapted to the communication distance. The trigger power is determined for the present communication distance on the basis of a test signal before data transmission begins. A circuit arrangement implementing the method includes a driver circuit with a switching device that switches a circuit junction point selectively to a supply voltage or to a constant reference voltage, a voltage-controlled resistor which delivers the driver current and is controlled from the circuit junction point, and a voltage-controlled measuring resistor which delivers a measured current with a fixed relationship to the driver current and is controlled from the circuit junction point. Since the set trigger power can be reduced, the power consumption for data transmission can be reduced considerably.

The invention relates to an LED light transmitter, comprising a digital signal processor; a D / A converter which is electrically connected with the digital signal processor; a drive circuit which is electrically connected with the D / A converter; and an LED light source which is electrically connected with the drive circuit and comprises an LED light emitting diode. According to the LED light transmitter provided by the invention, through adoption of the LED light source with the high light emitting efficiency, the transmission performance of the LED light transmitter is greatly improved.

The invention discloses a non-sliding parallel shaft line gear mechanism with separable center distance. The mechanism comprises a transmission pair composed of a pair of parallel shaft line gears, including a driving wheel and a driven wheel, wherein the driving wheel and the driven wheel are each composed of a wheel body and line teeth, and the tooth profile of the end face of the line teeth is an eccentric arc tooth profile designed in a parameterized mode. The line gear mechanism can realize continuous and stable non-sliding transmission under different center distance conditions within a certain range, so that the transmission ratio of line gear transmission is irrelevant to the center distance of the two gears, the transmission ratio is not affected by errors of the center distance, the influence of the errors of the center distance on transmission performance is reduced, and the mechanism is particularly suitable for occasions such as micro-transmission in which the assembly precision is difficult to ensure and the requirements on the transmission performance are high.

The invention discloses a polarization paired coding method for free space continuous variable quantum key distribution, which sequentially comprises the following steps: a sender and a laser generating laser pulses, an amplitude modulator adjusting signals, and the laser pulses being decomposed into two orthogonal polarized beams through a first polarization beam splitter; the two polarized lightbeams being subjected to I / Q modulation, after polarization paired coding is completed, performing signal transmission through a polarization beam combiner; after the signal is received, demultiplexing the polarization multiplexing signal through a second polarization beam splitter to obtain two polarized beams; combining two beams of local oscillation signals obtained by a local oscillator through a beam splitter, completing coherent detection through a photoelectric detector, and measuring two beams of polarized light beams; and performing polarization paired decoding by the polarization paired decoding module to obtain a signal transmitted by the sender. According to the invention, the problems in the prior art that the polarization dependent loss is accumulated, the signal distortionis increased, larger errors are generated, and the key distribution rate and the transmission distance in the system are limited are solved.

The invention discloses an intermediate joint protection structure for a power supply sealed cable. The structure specifically comprises a box body, sealing devices which are disposed on the inner walls of two sides of a square housing, a joint protection device which is disposed in the middle of the inner cavity of the square housing and a winding device which is arranged in the inner cavity of the square housing and located between the sealing device and the joint protection device. The joint protection device comprises a protection box, arc-shaped clamping plates arranged at the top and the bottom of the outer surface of the barrel-shaped body and reverse arc plates arranged on the sides, away from the barrel-shaped body, of the arc-shaped clamping plates. The invention relates to the technical field of cables. Through the arrangement of the box body and the joint protection device, the cable joint is subjected to double-layer protection, the safety of the joint protection device is prevented from being directly influenced by an external object, meanwhile, an interlayer of the cavity is formed through the double-layer protection, the resistance to the external environment temperature change is enhanced, and the application range of the equipment is widened.

A broadcast data transmission system is provided. The broadcast data transmission system utilizes multiple transmission antennas and multiple receiving antennas to transmit broadcast data. The broadcast data transmission device included in the broadcast data transmission system can determine different modulation modes for each transmission antenna, determine different transmission power for each data stream according to the determined modulation mode, and determine different precoding vectors.