55results about How to "Break through application limitations" patented technology

The invention discloses a method for determining the commutation failure of a high voltage direct current system, which comprises the following steps: S1 calculating the load component and the fault additional component of commutation voltage on a conversion bus of the high voltage direct current system when a fault occurs in a certain point thereof under a given fault close angle; S2 determining an integral interval and calculating the actual commutation voltage time area; S3 comparing the actual commutation voltage time area with the critical commutation voltage time area and determining whether the fault of the point can cause the commutation failure or not; S4 repeating the step S1 to step S3 and determining an alternating current fault region which causes the commutation failure of the high voltage direct current system. The invention further discloses a device for determining the commutation failure of the high voltage direct current system, which comprises a preparing unit, a calculation unit and a determining unit. The method and the device can greatly reduce the calculation scale, lead the precision to meet the needs of engineering applications, disclose the mechanism of how the fault close angle affects the commutation failure and be applicable to the analysis of fault steady state and fault transient state.

The invention relates to a dual-mode cloud air-conditioner system based on a Wi-Fi communication mode. The dual-mode cloud air-conditioner system based on the Wi-Fi communication mode comprises a cloud service platform, a Wi-Fi communication module, a cloud air conditioner and a mobile control terminal which are connected through a wide area network, wherein the cloud service platform is provided with a plurality of cloud service application modules, so that cloud services are provided for the cloud air conditioner and/or the mobile control terminal; the Wi-Fi communication module has two wireless topology networking modes of a basic network and an ad hoc network, the Wi-Fi communication module in the basis network is set in a station working mode through a dial switch, the Wi-Fi communication module in the ad hoc network is set in a wireless access point working mode through the dial switch, and a small wireless local area network is built by making Wi-Fi as a wireless access point; the cloud air conditioner contains protocols in half-duplex serial communication with the Wi-Fi communication module so that control information sent by the mobile control terminal can be received, and information of the cloud air conditioner can be fed back to the mobile control terminal.

The invention discloses an ionic flexible touch sensor. A sensor comprises a plurality of conducting layers, a plurality of insulating layers and two packaging layers. The mutiple conducting layers are arranged in a laminated manner. One insulating layer is arranged between every two conducting layers in a laminated manner and the two packaging layers are respectively packaged on the upper surfaceand the lower surface of the conducting layers arranged in the laminated manner; wherein the conductive layer is made of an ionic conductive flexible gel material, and the insulating layer and the packaging layer are respectively made of an insulating high-molecular polymer material. The ionic flexible touch sensor can be integrated with a contact position measurement module and a contact pressure/tensile force detection module. A complete set of complete structural design and manufacturing technical solution of the ionic flexible touch sensor is provided, and a product has the advantages ofhigh optical transparency, deep flexibility, low manufacturing cost, high position measurement resolution, high sensitivity and the like.

The invention relates to a medical test tube rack which comprises a locating plate, locating pipes and clamping parts. An annular groove is formed in the outer side wall of each locating pipe, and long-strip-shaped strip clamping holes are vertically and symmetrically formed in the portion, below each groove, of the side wall; each clamping part is provided with a circular buckle matched with the corresponding groove, strip clamping buckles which correspond to the strip clamping holes and are used for clamping test tubes are arranged on the circular buckles, the tail ends of the strip clamping buckles are folded inwards and can clamp the test tubes, and the strip clamping buckles are provided with sawtooth-shaped protrusions. According to the medical test tube rack, by means of exquisite design of the locating pipes and the clamping parts, the clamping parts are provided with the strip clamping buckles corresponding to the strip clamping holes of the locating pipes, and the strip clamping buckles are provided with the sawtooth-shaped protrusions; by means of the flexible connection mode of the clamping parts and the locating pipes, clamping force to the test tubes can be guaranteed, the cost is low, replacement of the clamping parts is convenient, the application range is wide, and wide popularization significance is achieved.

The invention belongs to the technical field of radar interference signal identification, and particularly relates to an active interference identification method based on a bilinear efficient neural network. The invention designs a more intelligent interference identification method to solve problems that the existing interference signal is difficult to identify under a low interference-to-noise ratio and depends on priori knowledge. According to the method, modeling analysis is carried out on various interference signals, the bilinear efficient neural network is adopted for recognition from the perspective of signal time-frequency images, and very high accuracy can still be obtained under the low interference-to-noise ratio. Simulation experiments prove that the bilinear efficient neural network is used for identifying the effectiveness of interference signals, and compared with a traditional mode of manually extracting features, the method is higher in precision and simpler and more convenient. According to the method, priori knowledge of interference signal characteristics is not needed, certain robustness is achieved under the low interference-to-noise ratio, and the application limitation of an existing radar active interference recognition method is broken through.

A method for improving compatibility of a stilbene-based biphenyl whitening agent and PP (polypropylene) plastic is as follows: 0.005-0.020 part of the stilbene-based biphenyl whitening agent is dissolved in a very small amount of solvent to obtain a whitening agent solution; the whitening agent solution is mixed with 1 part of stearic acid, 1 part of paraffin, 80-120 parts of PP (polypropylene) and 8-12 parts of PP-g-MAH to obtain a mixed material; the solvent of the PP plastic mixed material is evaporated; and thermoplastic molding is performed to obtain whitened PP plastic. Compared with the prior art, the method has the following characteristics: 1, the compatibility of a polar salt fluorescent whitening agent in the plastic PP is improved, the application limit of the polar salt whitening agent in plastics is broken through, the cost is low, the process is simple, and industrial application is facilitated; 2, the yellowing spot concentration of a fluorescent whitening agent in theplastic is improved, the whitening effect of the plastic is enhanced, and the thermal stability of the plastic is improved; and 3, a method is provided for application of the polar salt whitening agents in the plastic.

The invention discloses a method for preparing a thrombin/tannic acid multilayer film compound chitosan hemostatic sponge. The method comprises the following steps: preparing a chitosan porous sponge; assembling the thrombin/tannic acid multilayer film on the chitosan sponge by virtue of a layer by layer self-assembly method; standing the assembled compound sponge overnight for dehydrating and freeze-drying. By regulating the number of the thrombin/tannic acid bilayer, the thrombin drug loading capacity can be regulated and controlled, i.e., the hemostatic effect can be regulated and controlled; compared with the free state thrombin, the thrombin/tannic acid multilayer film compound chitosan hemostatic sponge can be used for greatly improving the storage stability of the thrombin, has the advantages of fast hemostasis speed and good effect, and is expected to be used for war wound and hemostasis of pre-hospital care.

The invention relates to the field of preparation technology of paint with scratch-resistance and wear-resistance, and especially relates to nanometer ceramic paint for pre-painting of metal printing plates with rollers and a preparation method thereof. The paint comprises the following components in parts by weight: 70-80 parts of nanometer ceramic resin, 10-15 parts of a curing agent, 2-4 parts of a matting agent, 0.5-3 parts of a fluorocarbon surfactant, 25-35 parts of a solvent, and 1-5 parts of an additive. A special Si/O structure in the components has binding energy which reaches 101 kilocalorie/mol, a vitrescent three-dimensional net structure can be formed after high temperature roast during a later period, so that hardness of a paint film on the surface of a coating is equal to or higher than 6H; the paint film is not easy to scratch or wear, and has excellent incombustibility and insulating properties; application limitation of the prior printing decorative plates which are prepainted with rollers is broken, good compatibility to a fluorocarbon coating layer is formed, and the paint is suitable for coating metal base materials or base materials with the fluorocarbon coating layer.

The invention belongs to the technical field of electronic reconnaissance, and particularly relates to a passive radar signal detection method based on sequential statistical filtering and binary detection. According to the invention, after certain speed reduction and signal-to-noise ratio improvement are carried out on low-signal-to-noise-ratio signals in a large instantaneous monitoring bandwidth through channelization preprocessing, binary accumulation detection is combined, and rapid and accurate detection can be realized under a certain low-signal-to-noise-ratio condition. The method adapts to the trend that the sampling rate of a reconnaissance system in the passive radar field is higher and higher, and solves the problem that signal detection is difficult under the condition of low signal-to-noise ratio. On the basis of a relatively stable condition in a channel, a detection threshold is estimated by performing sequential statistical filtering processing on reference data in a parallel sliding window without additional threshold compensation; wherein the parallel pipeline type structure ensures that an adaptive constant false alarm threshold can be quickly obtained under strong noise, the detection and false alarm probability can be further improved by adopting a binary accumulation detection technology, so that the application limitation of an existing detection method is overcome.

The invention provides a hybrid resource configuration method for fog computing Internet-of-Things physical layer security. The method comprises the following steps: establishing a secure fog computing Internet-of-Things system model; initializing a quantum galaxy group and parameters; according to a designed quantum galaxy group evolution rule, evolving all quantum galaxes; measuring the quantum states of the updated quantum galaces to obtain the measurement states of all the updated quantum galaces, calculating the fitness of the measurement states, and updating the measurement states of all the quantum galaces and the global optimal measurement state of the quantum galaces according to the fitness value; and judging whether a termination condition is met. If the algebra of the current evolution is smaller than the set maximum number of iterations, i is made to be equal to i+1, and the third step is executed; otherwise, the evolution is terminated, and the global optimal measurement state of the quantum galaxy group is output, thereby obtaining a corresponding hybrid resource configuration scheme. According to the invention, the uplink secrecy capacity of the whole Internet-of-Things system is greatly improved, network data leakage is reduced, and the Internet-of-Things user is prevented from eavesdropping useful information by a malicious eavesdropper.

The invention provides a communication method and device and a storage medium, and the method comprises the steps of responding to the received display information of a target application associated with first screen equipment, and determining the port identifier of second screen equipment associated with the target application; based on a pre-built corresponding relation, inquiring an equipment address corresponding to the port identifier; and sending the display information to a second screen device corresponding to the device address based on a pre-established long connection between the first screen device and the second screen device. According to the invention, communication between the first screen device and the second screen device can be realized; the application limitation of the communication scheme is broken through, the situation that the system broadcast message cannot be received due to the fact that the second screen device is offline and the like can be avoided, and the communication quality between the first screen device and the second screen device can be improved to a certain extent.

The invention discloses a self-adaptive help thread pre-fetch quality control method, and belongs to the technical field of multi-core cache performance optimization. The method can be used for improve the quality of help thread pre-fetch in irregular data intensive applications. Real-time online self-adaptive regulation of a help thread pre-fetch control parameter value can be achieved through the techniques such dynamic sampling, program operation stage detection, pre-fetch gain feedback, and self-adaptive regulation, and then the control quality of help thread pre-fetch can be improved. The method mainly includes the following steps: 1) dynamic information acquisition and feedback statistics; 2) index calculation; and 3) self-adaptive pre-fetch control. The method fully utilizes hardware information of a multi-core platform to achieve real-time pre-fetch control of a help thread, can be widely applied to access performance optimization, help thread pre-fetch quality control and sharing cache pollution control of the irregular data intensive applications in a current big data environment.

The invention relates to a double-dielectric-barrier low-temperature plasma synergistic catalytic treatment VOCs line pipe reaction unit. The unit is composed of an insulating medium kit, an inner electrode, an outer electrode, an end cover kit and a filling particle catalyst, the insulating medium kit comprises an inner pipe, an outer pipe, a perforated sealing plate and a threaded seat, the inner electrode is installed in the inner pipe of the insulating medium kit, one end of the inner electrode is connected with the threaded seat through a thread, an outer electrode is tightly attached tothe outer wall of the outer pipe of the insulating medium kit, one end of an outer pipe of the insulating medium kit is connected with the end cover sleeve through threads, and the other end is fixedly connected with a perforated sealing plate, and the filling particle catalyst is uniformly placed between the inner pipe and the outer pipe of an insulating medium external member, and is fixed in the reaction unit by the perforated sealing plate and the end cover external member to form an one-section cooperative structure. The one-section cooperative structure is adopted, the synergistic effectof low-temperature plasma and photocatalysis is fully utilized, the VOCs removal rate is high, and the yield of a byproduct O3 is low.

The invention discloses a virtual aperture MIMO radar target detection method based on two-dimensional block sparse recovery, and solves the problems of high distance sidelobe, poor small target detection performance and the like of a traditional virtual aperture MIMO radar. According to the method, a two-dimensional block sparse recovery method is adopted, and distance side lobes caused by incomplete orthogonality of waveforms are effectively inhibited by utilizing similarity and sparsity prior information of a distance-Doppler graph between virtual apertures in a target scattering information inversion problem; and the weak and small target detection performance loss caused by strong clutters and strong target side lobes is reduced, and the detection performance of the virtual aperture MIMO radar is improved.

The invention provides a color temperature chip for detecting an LED wall switch. The chip comprises a power supply management module, a chip logic control module, a filter and power failure detection module and a drive module. The chip is provided with (N+4) groups of pins, and comprises a VDD pin, a CAP pin, a GND pin, a CS pin, and N drive output pins D1, D2, D3, ..., Dn. The VDD pin is connected with the CAP pin through a PMOS tube back-to-back structure inside the chip. N output ends of the drive module are connected with N drive output pins D1, D2, D3, ..., Dn of the chip. According to the invention, a resistor, a diode and a capacitor component outside the chip are reduced on the original application system, which saves the application cost of the system; the chip can be used for a variety of isolated or non-isolated different applications, which breaks the application limitation of the original scheme; groups of selectable ports are arranged on the drive output end of the chip; a variety of different drive tubes are packaged in the chip, and different voltage withstand values can meet the needs of a variety of different applications; and the chip can be in drive connection with N LED light strings (N is greater than 2) to realize multi-channel drive control.

The invention relates to a ground subsidence monitoring system based on GNSS and InSAR. The ground subsidence monitoring system comprises a plurality of monitoring stations arranged at different places in a to-be-monitored area, a base station arranged in a geological stable area outside the to-be-monitored area, and a monitoring early warning center. The monitoring station is used for monitoring land subsidence of a monitoring point based on GNSS and InSAR to obtain a first monitoring result, and sending the first monitoring result to the monitoring and early warning center; the base station is used for carrying out ground subsidence monitoring on a reference point based on the GNSS to obtain a second monitoring result, and sending the second monitoring result to the monitoring and early warning center; and the monitoring and early warning center is used for carrying out land subsidence analysis on the to-be-monitored area according to the first monitoring result and the second monitoring result, and carrying out early warning according to an analysis result. According to the invention, a three-dimensional ground deformation monitoring system based on point-surface combination can be formed, the application limitation of a single monitoring technology is broken through, and the temporal-spatial resolution of a three-dimensional deformation monitoring result is greatly improved.

The invention relates to a single-plunger double-displacement reciprocating rotation hydraulic drive. The single-plunger double-displacement reciprocating rotation hydraulic drive is provided with an input shaft mounted in a front end cover, and a pump sleeve on the end surface; the pump sleeve is provided with an oil sucking port and two oil discharge ports; one end of the input shaft is connected with a motor, and the other end of the input shaft is connected with a pump element through a float coupling; the pump sleeve and the pump element are connected through matching a semicircular groove in the cylinder surface of the pump element with a steel ball in the spherical surface of the pump sleeve, so that the pump element performs an axial reciprocating motion along the groove in the cylinder surface of the pump element during rotating; blind holes and oil grooves are respectively formed in the centers of two ends of the pump element, wherein the blind hole at one end and the input shaft form a left end closed oil cavity of the pump, and the blind hole at the other end, the pump sleeve and a pump body form a right end closed oil cavity of the pump; the pump element rotates; the oil grooves of the pump element are alternately switched and communicate with the oil sucking port and the oil discharge ports of the pump sleeve; meanwhile, the sizes of the left and right two closed oil cavities are alternately changed along with left-right axial reciprocating motion of the pump element; the oil suction and discharge are realized; and the double-displacement output is formed. A working medium is such fluids as hydraulic oil or a water medium.