117results about How to "Break the limit" patented technology

The invention discloses an ejector-driven closed-loop recirculation temporary impulse supersonic wind tunnel flow field control method. An ejector arranged behind a diffusion section is adopted as themain drive of a wind tunnel flow field, under the cooperation of a recirculation regulating valve, an assisting air admission pressure regulating valve and an exhaust throttle valve, a stable supersonic flow field is established, wherein precise control of the total pressure of a stabilizing section is achieved under the mutual action of a pressure regulating valve of the ejector and the assisting air admission pressure regulating valve, and on the basis of the precise control of the total pressure, the establishing of stable supersonic flow fields with different M values under the same operation total pressure in a temporary impulse supersonic wind tunnel can be achieved under the cooperation of a nozzle profile surface and a diffusion section profile surface. By means of the method, thesimulation of negative pressure working conditions can be achieved in a closed-loop recirculation temporary impulse supersonic wind tunnel, the operating envelope and simulation range of the wind tunnel are effectively expanded, and the total pressure of a stabilizing section needed by the establishing of a supersonic flow field when the M value of a traditional temporary impulse wind tunnel is high can be significantly reduced, which facilitates the aerodynamic loading of a model and the improvement of the measuring accuracy of a strain gauge balance of the wind tunnel.

The invention provides a housing vacancy rate assessment method based on an electric energy service management platform. The method comprises that the electric energy service management platform analyzes characteristic of users with zero electricity consumption, and a vacant house screening condition is obtained; vacant houses in a user group are screened according to the screening condition; and the housing vacancy rate of the vacant houses is calculated. According to the assessment method, the housing vacancy rate is calculated on the basis of power consumption data, and the calculation cost is reduced; and a uniform metering method is provided for present researches on the housing vacancy rate, and technical means is provided for resident migration, regional resident power consumption prediction and electricity market analysis.

The invention relates to a method for mounting a storage device in the Android system, and in particular relates to a method for mounting a multi-partition storage device in the Android system. The method comprises the steps of 1, sending an event containing all node information through an inner core when inserting and drawing an external storage device; 2, determining that the local storage daemon process monitors the event from the inner core and whether the node information in the event is included into a known lift of the Android; if so, enabling upper mounting to be performed, namely, updating the disk state, creating a thread to inform the local storage daemon process of implementing a specific mounting command, and mounting a partition only; if not so, enabling the local storage daemon process to work, adding to a list that can be processed, informing of performing the upper mounting, namely, receiving the information, adding the node information to a support list, and mounting the node; 3, finishing the mounting. With the adoption of the method, each partition can be successfully mounted for a user to use, and therefore, the waste of the disk space can be avoided.

The invention discloses a method and device of monitoring the height of corn plants in a wild environment based on an embedded type technology and a GPRS (General Packet Radio Service) wireless transmission technology, and belongs to the field of embedded type image processing and wild crop growth remote wireless monitoring. The invention comprises a device part and a method part. A data collection module of the device part utilizes a binocular stereoscopic vision principle; a data processing and transmitting module mainly utilizes the embedded type technology and the GPRS wireless transmission technology; and an independent power supply module mainly utilizes a photovoltaic power generation system to independently supply power to the whole device and the difficulty that no power grid exists in the wild environment is overcome. An embedded type image processing module of the method part can be used for eliminating the influences of wind power factors in the wild environment on corn plant images to the greatest extent; and a mobile terminal can be used for sending a wireless instruction through a GPRS wireless communication system, effectively and remotely controlling a whole data collecting and processing device to obtain a needed corn plant growth condition and performing the corresponding judgment and decision in time.

The embodiment of the invention discloses a complex terrain adaptive landing gear of a vertical take-off and landing aircraft and a landing method of the complex terrain adaptive landing gear. The device comprises at least two landing legs, two movable joints, a scanning detector, a terrain recognition camera and load sensors, wherein upper connecting rods in the landing legs are connected with anundercarriage adapter frame through the movable joints, the upper connecting rods are connected with lower connecting rods through the movable joints, buffer mechanisms are installed in the lower connecting rods, foot end devices are installed at the tail ends of the landing legs, and load sensors are located between the lower connecting rods and the foot end devices; the two movable joints are used for controlling the moving postures of the upper connecting rods and the lower connecting rods respectively; the upper end of the load sensor is connected with the buffer mechanism, and the lowerend is connected with the foot end device; the scanning detector and the terrain recognition camera are mounted below the vertical take-off and landing aircraft; and the load sensors are used for measuring the ground load of the landing legs after the landing legs touch the ground, and controlling the posture of the landing legs by feeding back the ground load of the landing legs to a flight control system. The device disclosed by the embodiment of the invention solves the problem that an existing landing gear is generally poor in adaptability in the landing process.

The embodiment of the invention discloses a block chain-based chain currency exchange method, device and equipment and a medium. The method comprises the steps of obtaining a currency exchange request; determining a target exchange amount according to the exchange exchange exchange rate between the source currency and the target currency in the currency exchange request and the amount to be exchanged; and according to the to-be-exchanged amount and the target exchanged amount, transferring the source currency from the user account to which the source currency belongs to the source chain account of the source parallel chain, and transferring the target currency from the target chain account of the target parallel chain to the user account. According to the scheme, the source chain account of the source parallel chain and the target chain account of the target parallel chain are introduced; and the source chain account and the target chain account are used as intermediate hubs for exchanging the chain currencies issued by different parallel chains, so that cross-chain exchange of the chain currencies is realized, the limitation of the block chain rule on the chain currencies is broken through, and meanwhile, the credibility and the value of the chain currencies are ensured.

The invention discloses a device for growing a big emerging plant on the near water surface of a deep water area of a lake. The device comprises a buoyancy wooden bucket, a pulling rope, an adjusting article and a fixing article, wherein the inside of the buoyancy wooden bucket is divided into an up-and-down two layer structure by a separating board, the lower layer is a buoyancy foam layer filled with foam plastics, and the upper layer is a mounting medium layer filled with porous stones; the lower part of the buoyancy wooden bucket is provided with a connecting piece; the pulling rope passes through the connecting piece and is movably connected with the buoyancy wooden bucket; and one end of the pulling rope is connected with the fixing article, while the other end is connected with the adjusting article. The device makes that the big emerging plant is grown in the deep water area of the lake possible, and better improves the structure and function of an ecological system of the lake. The device has the characteristics of strong operability, low construction cost, practicality, easy popularization and good application prospect, and can be used for ecological restoration of plants in the deep water area of the lake.

The invention discloses a rotary ultraviolet sterilization lamp and belongs to the technical field of disinfection equipment. The rotary ultraviolet sterilization lamp comprises a shell, lamp tubes (5) and a controller (6), wherein the shell comprises a cover body (1) and a base (2), a containing cavity (3) is formed in the center of the cover body (1); N grooves (4) for fixing the lamp tubes (5) are uniformly formed in the outer wall of the cover body (1). The rotary ultraviolet sterilization lamp also comprises a switch (9), a motor driving circuit (7) and a motor (8), wherein the motor (8) is arranged in the containing cavity (3) in the cover body (1); a rotating shaft of the motor (8) is fixedly connected with a centre point of the cover body (1); the switch (9) is sequentially connected with the controller (6), the motor driving circuit (7) and the motor (8). The rotary ultraviolet sterilization lamp provided by the invention can move and uniformly irradiate, and the irradiation range is enlarged; the limitation to a position and the irradiation range is broken through; the disinfection and sterilization efficiency is improved; the disinfection and sterilization effects can be well achieved.

The invention discloses a frozen microneedle array, a preparation method therefor and application of the frozen microneedle array. The frozen microneedle array is prepared by a method of introducing afreezing process during template replication on the basis of a principle that aqueous substances can become hard from soft by freezing. The preparation method is simple in operation, facilitates popularization and can be applied to large-scale production, the prepared frozen microneedle array can be prepared from various solutions or aquagel, restrictions of microneedles to material selecting arebroken away; and moreover, the freezing process scarcely damages activity of bioactive substances, so that frozen microneedles have capacity for carrying a variety of bioactive substances, have better universality and are advantageously applied to a variety of biological and medical fields.

The invention belongs to the technical field of high polymer materials, and particularly relates to a polypropylene composite material and a preparation method thereof. The preparation method comprises the following steps: mixing high-fluidity co-polypropylene resin A, high-fluidity co-polypropylene resin B, high-impact co-polypropylene resin C, a toughening agent, titanate whiskers, an antioxidant and a lubricant according to a special ratio. The preparation method includes steps of: mixing, melting, homogenization and extrusive granulation to obtain the polypropylene composite material. By doping the titanate whiskers, the strength of the polypropylene composite material is remarkably improved, and the polypropylene composite material has a relatively low dielectric constant and can meet the requirements of multimedia transmission and high communication quality of fourth-generation mobile communication.

The invention provides a positioning guide plate, a manufacturing method thereof, a positioning guide plate model generation method and a positioning guide plate model generation system. The positioning guide plate model generation method and system are all based on a broken bone model after virtual reduction of a fractured bone of a fracture nail to be driven into a patient, and the method comprises the following steps: extracting a guide plate base surface from the model surface of the broken bone model; copying all the space points on the guide plate base surface and translating all the copied space points for a preset distance by keeping the original topological structure to form a guide plate base top surface; carrying out triangular patch fitting on the boundary points of the guide plate base surface and the boundary points of the guide plate base top surface to obtain an initially-formed guide plate model; constructing a guider three-dimensional model; rotating and / or translating the guider three-dimensional model on the initially-formed guide plate model by adopting a human-computer interaction mode to obtain a target guider three-dimensional model; and carrying out difference set Boolean operation on the target guider three-dimensional model and the initially-formed guide plate model to obtain a Boolean operation result, namely the positioning guide plate model to be generated. The method and system are used for assisting surgical positioning of the fracture nail.