84results about How to "Promote the practical process" patented technology

A chemically toughened ultrathin glass is provided. The glass has a thickness less than 500 μm and a surface compressive layer having a depth of at most 30 μm. The toughened ultrathin glass sheet is more flexible and has extraordinary thermal shock resistance with the glass being easier to handle for processing.

A coated chemically strengthened flexible thin glass includes a coating of an adhesive layer in the form of a silicon mixed oxide layer, which contains or consists of a silicon oxide layer in combination with at least one oxide of aluminum, tin, magnesium, phosphorus, cerium, zirconium, titanium, cesium, barium, strontium, niobium, zinc, or boron, and magnesium fluoride, such as at least aluminum oxide.

The invention discloses a fatigue state detecting method for eliminating driver individual difference by utilizing online learning and through eye motion characteristics. The method comprises the following steps of obtaining a video image of a driver through a camera, detecting the face of the driver according to the video image and processing the video image to obtain driver eye motion characteristics; and comparing the driver eye motion characteristics and data under the condition that the driver is sober, wherein a result exceeds a threshold value shows that the driver is in a fatigue driving state, and if the result does not exceed the threshold value, the driver eye motion characteristics are learned on line in the meanwhile, and information obtained through online learning are continuously compared till a vehicle stops. By means of the fatigue state detecting method, the driver eye position characteristics are detected, and driver characteristics are learned to distinguish whether the driver is in the fatigue driving state or not, so that accidental risk is prevented in advance, and accordingly driving safety of the driver is improved.

The invention discloses a network architecture for WSN accessing the Internet and a service providing method for WSN, which are used for solving problems of WSN accessing the Internet and delivering service to users, thereby extending the Internet to every corner of the physical world really and truly. The invention, in a way of network middleware, arrays a WSN-Internet gateway between a WSN and the Internet, and arrays an administration server on the Internet. The WSN-Internet gateway is used for realizing the switch between the WSN and the Internet protocol and for WSN accessing the Internet; a WSN-Internet network middleware is used for realizing the registration, seeking, order and offer of WSN service. The network architecture and the service providing method of the invention do not need modifying the present network protocol stack and has the advantages in that: the structure is simple and reasonable, and uniform control and administration of WSN service are realized in a convenient and flexible manner; service access control is easy to realize in network access and service provision; thus providing a reference pattern for the operation of WSN, being beneficial to accelerating the practical application process of WSN.

The invention discloses a non-contact power transmission system based on a Z-source inverter and a phase-shifting control method thereof. A circuit is divided into a transmitting part and a receiving part by taking a coupler as a boundary. The transmitting part comprises an input direct current power supply, a Z-source network, an inverter circuit and an induction coupling primary winding, wherein a diode is connected serially behind a voltage source to prevent the reflow of current. The receiving part comprises an induction coupling secondary winding and a rectification filter circuit. In the system, the transmission power and the loading voltage of the system are reduced by driving the setting of a phase shifting angle in a pulse; and direct connection time is simultaneously added in the phase shifting angle to increase the transmission power and the loading voltage of the system, thereby realizing bidirectional adjustment of the transmission power and the loading voltage. The invention solves the problem that load can not work in a rated condition due to factors such as load change and the like in the non-contact power transmission system, and promotes the practicability progress of the non-contact power transmission technology.

The invention discloses an AlGaN-based multiple quantum well uv-LED device based on a SiC substrate and a manufacturing method, relating to the technical field of micro-electronics. The device comprises a low-temperature AlN nucleating layer (2), a high-temperature AlN nucleating layer (3), an intrinsic AlGaN epitaxial layer (4), an n-AlGaN barrier layer (5), an active area (6), a p-AlGaN barrier layer (7), a low Al component p-shaped AlGaN layer (8), a p-shaped GaN capping layer (9) and a window area (10) arranged on the p-shaped GaN capping layer from bottom to top in sequence. The device etches the p-GaN capping layer to an electronic p-AlGaN barrier layer by a dry method to form a cylindrical emergent light window which is changed into a conical window by a secondary wet etching, so that the emergent aperture of the window is enlarged and the spread distance of the emergent light is simultaneously shortened. Due to adopting the method of etching, the device coarsens the surface of the electronic p-AlGaN barrier layer, thus further improving the emitting efficiency of the emergent light. In addition, the device has simple process, low cost, good repeatability and high reliability and can be used for water quality detection, medical probing, biopharming and white light illumination.

A structure is for increasing performance of transistors of GaN base high electronic movability includes: a sapphire substrate, a SiC2 substrate or a silicon substrate, a high resistance semi-insulation GaN buffer layer processed on the substrate, a high movability GaN channel layer processed on the buffer layer, a thin ALN plug-in layer processed on the channel layer to increase the integrated performance of the transistor materials of GaN base high electronic movability, a n-type doped or un-purpose doped ALGaN barrier layer processed on the thin ALN plug-in layer.

The invention provides a verification processing method for a relaying protection setting value. The method comprises the following steps of: reading the real time data of a power grid from an energy management system, and forming a current system running mode; in the current system running mode, performing online verification calculation on a protection setting value of the power grid to judge whether protections which do not meet verification requirements exist or not; if the protections which do not meet the verification requirements exist, forming a set of the protections which do not meet the verification requirements; calculating the probabilities and results of failure to operate on command of each protection in the set, and multiplying corresponding probabilities and results to obtain values-at-risk of failure to operate on command of the protections; calculating the false operation probabilities and results of each protection in the set, and multiplying corresponding probabilities and results to obtain false operation values-at-risk of the protections; calculating the weighted sums of the values-at-risk of failure to operate on command and false operation values-at-risk of the protections to obtain total values-at-risk of the protections; and rearranging the total values-at-risk of all the protections in the set from lower values to higher values.

The invention discloses an electric automobile power supply free of external charging. The electric automobile power supply comprises an energy storage cell which is used for charging a power cell or directly driving a motor, an energy storage cell control unit which is used for controlling the energy storage cell and adjusting the start and stop and the output power of the energy storage cell by controlling the gas, water and heat inside the energy storage cell, the power cell which is used for directly providing electric energy for the motor and maintaining the normal rotating power of the motor in an electric automobile through receiving the electric energy which is provided by the energy storage cell, a power cell management unit which is used for controlling the discharging and the charging of the power cell, a DC (Direct Current)/DC (Direct Current) converting unit which is used for converting the direct current voltage which is fluctuant in a fixed range into the voltage which can be loaded on the power cell, and a power system control unit which is used for adjusting the power generation of the energy storage cell and the charging and discharging of the power cell, and providing the electric energy for the motor. According to the electric automobile power supply free of external charging, a fuel cell is used as the energy storage cell and used for assisting electricity supply, the real-time charging of the electric automobile is realized, and an external charging interface is not needed.

The invention provides a porous oxide/titanium dioxide microsphere composite catalytic material and a preparation method thereof. The porous oxide/titanium dioxide microsphere composite catalytic material is applicable to sewage treatment. According to the invention, a mol ratio of titanium dioxide to oxide is 1: 10 to 1: 5, and titanium dioxide and oxide are compounded to form a heterostructure; the diameter of a titanium dioxide microsphere is in a range of 10 to 70 [mu]m, and the interior of the microsphere is of a porous structure; the microsphere has a specific surface area of 20 to 90 m<2>/g; and mixed slurry of a metal ammonium salt and TiO2 powder is uniformly sprayed into liquid nitrogen in the form of mist spray, then freeze drying is carried out in a low-temperature low-pressure environment, and finally, sintering in an air atmosphere is carried out so as to obtain a porous microsphere. The preparation method provided by the invention is simple in process and easy for industrialization. The porous microsphere is prepared by accumulation of a metal oxide nanosheet and TiO2 uniformly distributed on the surface of the nanosheet, so the preapred porous oxide/titanium dioxide microsphere composite catalytic material has a great specific surface area and good photocatalysis performance.

The invention discloses an RIS-assisted NOMA enabled VLC/RF hybrid network secure transmission method, which is characterized in that an optical access point is configured at the indoor top, and a relay node is arranged on a desktop right below the optical access point; the optical wave beam of the optical access point can cover the edge of the round table top furthest, so that the NOMA user on the ground cannot directly receive the signal sent by the optical access point, and then the relay node is utilized to relay and transmit the electric signal to a reconfigurable intelligent surface (RIS) after photoelectric conversion; then the RIS reflects the signal to the NOMA user, and the eavesdropping node eavesdrops the information of the user in the process; on the basis of analyzing channelstatistical characteristics of an optical wireless link and a radio frequency wireless link, the safety outage probability and strict positive safety capacity of the VLC/RF hybrid network during amplification forwarding and decoding forwarding transmission are obtained respectively. Simulation verifies that the performance of the secure transmission method provided by the invention is related tothe number of reflection element surfaces, indoor layout, optical access point characteristics and radio frequency transmission characteristics.

The invention discloses a method for optimally controlling influences among a plurality of harmonic sources and the power quality of a smart grid. In the method, for the phenomena of resonance and harmonic amplification among a plurality of power supplies in the smart grid, and the characteristics of the diversity, attenuation property, correlation and the like of harmonic waves, current is represented as a function for a voltage distortion factor and is adjusted according to the characteristics of the harmonic sources to restrict the voltage distortion factor, and the optimal distribution ofpower quality adjustment devices is determined in terms of security, economical efficiency and environmental protection based on a dynamic current plan model to eliminate harmonic superposition and voltage fluctuation so as to realize the optimization of system performance and obtain expected stability and power quality. The method has the advantages of effectively improving the harmonic pollution of the smart grid and providing required power quality for the establishment of the strong smart grid, and also can be applied in the fields of metallurgy enterprises, electric locomotives, aerospace, shipping and the like to promote the industry upgrading of the whole society.

The invention discloses a high-precision resonant optical voltage sensor and a detecting method and belongs to the technical field of optical voltage sensing. The optical voltage sensor comprises a narrow linewidth laser source, a Y waveguide, a BGO crystal, dual detectors and a signal detection circuit which are sequentially connected through polarization maintaining optical fibers. The front light transmitting surface and the rear light transmitting surface of the BGO crystal are coated with films to form a high-definition resonant cavity, and the Pockels effect is improved through multiple times of transmission of light in the resonant cavity. According to the detecting method of the optical voltage sensor, by means of a resonant light path for dual path tracking, the resonant frequency difference of the two beams of light is synchronously detected, interference caused by the temperature change of the two beams of light at the same moment is consistent, the interference variables of the two beams of light in the propagation process are offset, and the improved Pockels effect is reserved. The measuring precision, temperature stability and environment adaptability of the optical voltage sensor are improved, the contradiction of high precision of miniaturization of the voltage sensor is solved, light path devices are reduced, and the structure is simple and reliable.

The invention discloses an ultraviolet LED element and a fabricated method of AlGaN base sapphire substrate, relates to the technical field of microelectronics and mainly solves the problem of low emergent light efficiency. The ultraviolet LED element comprises a low-temperature AlN nucleating layer, a high-temperature AlN nucleating layer, an intrinsic AlGaN epitaxial layer, an n-AlGaN barrier layer, an active zone, a p-AlGaN barrier layer, a low Al component p-type AlGaN layer, a p-type GaN cap layer, and a window zone arranged at the p-type GaN cap layer, which are sequentially arranged from top to bottom. The ultraviolet LED element etches the p-AlGaN cap layer until the p-AlGaN with low Al component by a drying method to form the column emergent light window, and then etches the p-AlGaN cap layer until the p-AlGaN with low Al component by a wetting method so as to change the column emergent light window into a similar hemispheric window, can make the material surface of the window be coarsened while increasing the emergent pore diameter of the window, and greatly improves the power and the efficiency of emergent light. The invention has simple process, good repetitiveness and high reliability, and can be used to occasions of water treatment, medical treatment and biomedicine, and the white light illumination.

The invention relates to a parameter identification method of a synchronous generator based on the trace sensitivity. The parameter identification problem of the synchronous generator is analyzed through the trace sensitivity, a data interval capable of facilitating improvement of the identification precision is selected, and a complete parameter identification model is proposed based on the solution of the selection problem of the identification data interval. According to the method, good robust performance is achieved, and the practical process of parameter identification of the generator is promoted.

The invention belongs to the technical field of data information, and discloses a semi-quantum privacy comparison method and system based on a Bell state, and the method comprises the steps: achievingthe comparison of privacy information between semi-quantum users through the attributes of a Bell state; On the basis of ensuring completion of privacy comparison, the quantum bit efficiency is improved, and the protocol process is simplified; And it is ensured that the third-party TP and the external eavesdropper cannot obtain part or even all of privacy information of the user while it is ensured that privacy comparison is completed. According to the invention, the protocol can be applied to the current actual network environment, and the practical process of the quantum technology is promoted; Privacy comparison and eavesdropping detection can be completed by the semi-trusted TP through simple Bell measurement, and additional privacy information cannot be acquired by the semi-trusted TP; And at last, the TP only needs to publish one classical particle to represent whether the privacy information of the two parties is equal or not.

The invention discloses a dynamic resource allocation method for enhancing NOMA visible light communication network security, and the method comprises the steps: obtaining the CSI of a legal mobile user and an eavesdropper through channel estimation, and carrying out the channel gain sorting; obtaining a receiving signal to interference plus noise ratio of the legal mobile user and an instantaneous signal to interference plus noise ratio of an Eve eavesdropping the user by using a serial interference elimination technology of NOMA, and representing the network and security capacity of the NOMAvisible light communication network; proposing a joint optimization problem of security communication and power allocation under the condition of user movement, and maximizing the network and security capacity under the constraint condition that the power of each optical access point and the power allocated to the associated user by the optical access point based on NOMA; and solving the joint optimization problem by using a hierarchical power allocation algorithm. According to the method, a theoretical basis is supplied for enhancing the physical layer security of NOMA visible light communication of mobile users, and the method promotes the application of NOMA visible light security communication in densely populated places, and promotes the practical process of NOMA visible light security communication in the fields of karst cave tourism, ubiquitous wireless access services and the like.

The invention provides a resistive random access memory unit-based logic arithmetic unit. The logic arithmetic unit is formed by connecting a resistive random access memory unit and a switch in series. The logic arithmetic unit is simple in structure, skillful in design and low in fabrication cost; by designing logic operation rules, all 16 binary Boolean logic operations can be finished under thecondition of not exceeding three writing operations; and logic operation results can be automatically and nonvolatilely stored in the resistive random access memory unit, so that data processing andstorage functions can be integrated, a practical process of a resistive random access memory base logic circuit can be greatly promoted, and the logic arithmetic unit is of important significance fordevelopment of the resistive random access memory base logic circuit.

The invention relates to a secondary battery, in particular to a rechargeable lithium battery, which is applied to the technical field of electrochemical energy storage devices. The invention providesa novel polymerization idea for synthesizing benzidine derivatives, and the derivatives are then compounded with an electrolyte membrane containing nano silica tubes or aluminum oxide, so that a method for preparing sandwich structure solid electrolyte is realized. The method provided by the invention is simple in preparation process, high in safety, and low in requirements for equipment and technological conditions, thus being beneficial to popularization and application.

The invention discloses a non-contact electric energy transmission system based on a Z-source inverter and a phase-shifted control method of the transmission system. A circuit is divided into two parts of transmitting and receiving by taking a coupler as the boundary, wherein, the transmitting part comprises an input direct-current power supply, an impedance source network, an inverter circuit and an induction coupler primary winding; for preventing the current backflow, a diode is necessary to be connected behind the voltage source in series; the receiving part comprises an induction coupler vice-side winding and a rectification filter circuit. In the system, the transmission power and the load voltage of the system can be reduced by setting the phase-shifted angle in a drive pulse; and meanwhile, the transmission power and the load voltage of the system can be increased by increasing the straight-in time in the phase-shifted angle, thus realizing the bidirectional adjustment of the transmission power and the load voltage. According to the invention, the problem that the load can not operate at the rated condition because of factors such as load change and the like in the non-contact electric energy transmission system can be solved, and the practical progress of the non-contact electric energy transmission technique is promoted.

The invention provides a high stable unipolar resistive memory. The core is a 'chemically inert anode/oxide storage medium/chemically active cathode' three-layer film structure, wherein the oxide storage medium and the chemically active cathode spontaneously perform interface reaction to form an interface layer containing a large amount of oxygen vacancies and sub-oxides; when a voltage is appliedbetween the anode layer and the cathode layer, conductive filaments formed in the oxide storage medium have tip structures near the anode under the action of the interface layer; formation and disconnection of the conductive filaments due to the change of the voltage occur near the tips, thus inhibiting random formation and disconnection of the conductive filaments and achieving a high stable unipolar resistive behavior.

The invention belongs to the technical field of quantum secure communication, and discloses a Bell state-based two-party quantum key negotiation method and system. According to the Bell state-based two-party quantum key negotiation method, the participation of a third party is not needed, and the users of the two communication parties execute the protocol, so that the key is negotiated by the twocommunication parties in a common and fair manner on the premise of ensuring the key security, and any one of the protocol parties cannot independently decide or know the final key in advance before the other party. The method and system are realized by adopting a semi-quantum technology, so that the hardware cost of a user is reduced. The two parties participating in the key negotiation only needto have two basic quantum functions, and the key negotiation can be completed without complex quantum operation; the method and system are easy to deploy and can be easily applied to promotion of thequantum communication protocol.