71results about How to "Promote technological development" patented technology

The plug-and-play mechanical arm system based on distributive control in robotic technology includes system unit, USB interface module, central controller, internal distributive control system and mechanical arm. The system unit is connected via a USB cable with USB interface module, and the central controller is located between the USB interface module and the internal distributive control system, which are connected to the central controller via parallel bus. The internal distributive control system consists of several parallel subsystems with the same functions, and each of the subsystems includes one PID controller, one DC motor driver and one DC motor with feedback; and connected via control lines to the mechanical arm. The present invention provides complete interface and control scheme for the popular future robot.

The invention relates to an authigenic Al3Ni and Si mixed particle aluminium alloy piston for local enhancement and a preparation method thereof. The aluminium alloy piston comprises a head, a skirt and a pin hole, wherein the head comprises a piston top and a ring slot; the piston top and the ring slot are arranged in an enhancement area formed by authigenic and separated primary Al3Ni and primary Si in the solidification process of alloy; the volume fraction of the primary particles in the enhancement area is gradually decreased from the piston top to the ring slot; and the piston skirt and the pin hole are arranged in the non-enhancement area with no particles. The piston realizes the continuous transition of organization structure and performance of the enhancement area and the non-enhancement area. The piston head has excellent high-temperature resistance and wear resistance, and the skirt has good comprehensive mechanical property, so as to be applicable to high-emission engines. The molten primary enhanced particles in the homogeneous aluminum matrix composite are collected at the piston top and the ring slot by means of a centrifugal casting method, the process is simple, and the service life of the piston is long.

The invention provides an aqueous polyurethane emulsion preparation method. The preparation method comprises the following steps: subjecting waste polyurethane fibers to an alcoholysis treatment so as to obtain a mixture of hydroxyl terminated polyurethane with a molecular weight of 5000 to 10000 and polyol, and directly subjecting the mixture to processes of pre-polymerization, chain propagation, and emulsification so as to one-step obtain aqueous polyurethane emulsion; wherein the waste polyurethane fiber is preferably selected from waste polyether type polyurethane fiber and/or polycarbonate type polyurethane fiber generated by dry spinning or wet spinning; more preferably, the waste polyurethane fiber is selected from waste polytetramethylene glycol type polyurethane fiber and/or polycarbonate diol type polyurethane fiber whose soft section ratio is 85% or more; and most preferably, the waste polyurethane fiber is waste polytetramethylene glycol type polyurethane fiber whose soft section ratio is 85% or more. The preparation method provided a more reasonable reutilization method with a more additional value for waste high-grade polyurethane fibers.

The invention relates to the field of geological disaster hidden danger detection, and provides a geological disaster hidden danger detection method for multi-unmanned aerial vehicle collaborative photogrammetry, and the method comprises the steps: firstly, judging the shape of a to-be-detected region; secondly, according to the shape of the to-be-detected region, calculating a multi-unmanned aerial vehicle cooperative photogrammetry flight path planning route; then, enabling the multiple unmanned aerial vehicles to simultaneously collect multi-temporal-spatial-scale panoramic images on the planned route and splice the multi-temporal-spatial-scale panoramic images; then, generating a high-precision digital elevation model and an orthographic image according to the spliced panoramic image; then, automatically recognizing and classifying geological disaster hidden danger points, and automatically recogizing ground tiny deformation in areas with the geological disaster hidden danger points; and finally, performing geological disaster early warning by using the identified ground tiny deformation. According to the invention, rapid generation of unmanned aerial vehicle digital images can be realized, integrated geological disaster detection is achieved, and technical development in the field of geological disaster detection is promoted.

The invention belongs to the technical field of production of controlled-release fertilizers and more specifically relates to a nano controlled-release fertilizer and a preparation method therefor. The nano controlled-release fertilizer is prepared from fertilizer core particles and external coatings, wherein the fertilizer core particles are mercapto functionalized nano-carriers for loading a fertilizer, and a mass ratio of the mercapto functionalized nano-carriers to the fertilizer is 1: (1 to 10). The nano controlled-release fertilizer provided by the invention is a nano-scale fertilizer and can be used for effectively increasing the absorption utilization ratio of crops to the fertilizer; after the nano-carriers for loading the fertilizer are subjected to functionalization treatment, the nano controlled-release fertilizer can have environment stimulated responsiveness, releases the fertilizer in the nano-carriers in case of stimulation and does not release the fertilizer in case ofno stimulation; and in the presence of glutathione or thioredoxin in crops, the glutathione or thioredoxin acts with disulfide bonds on surfaces of the nano-carriers, thus, the disulfide bonds are broken, and mesopores in surfaces of nanotubes and tube cavity ports are opened to release the fertilizer in tube cavities.

The invention discloses a mud-resistant agent for a regenerated water stable layer. The mud-resistant agent is prepared from the following components in parts by mass: 30 to 45 parts of mud dispersingcomponent, 4 to 7 parts of mud adsorbing component, 30 to 40 parts of ion complex component, and 70 to 90 parts of set retarding component. The mud-resistant agent has the characteristics that the mud-resistant agent is compounded with other polycarboxylic acid water reducing agents; the technical bottleneck of application of the polycarboxylic acid water reducing agent in the regenerated water stable layer is breaken through; the dispersivity of cement in the regenerated water stable layer is improved, the strength of the regenerated water stable layer is enhanced, the doping amount is low,the cost is low, and the like; the adverse effect to the base layer of the regenerated water stable layer is avoided; meanwhile, the pollution to environment is avoided in the production and use process, and the mud-resistant agent is a green and environment-friendly product.

The invention provides a decentralized electronic check method and system. The decentralized electronic check method comprises the steps of issuing a check, transferring the check, accepting the check and issuing a custom check. The decentralized electronic check system comprises a signing and issuing module, a transferring module, an acceptance module and a user-defined issuing module. The decentralized electronic check method and system have two core characteristics that: firstly, check transactions can be executed asynchronously step by step; the verification broadcast is confirmed to be completed in a time range (such as a plurality of second-level block periods) which can be accepted by a user from issuing, receiving to verification broadcast, even if the problems of network interruption or witness and the like occur, the verification broadcast can be continuously completed in the next short period, the system pressure is greatly released, and meanwhile, the operation safety is ensured; secondly, the user can issue a user-defined check; system user number has no upper limit, and the types of electronic checks which can be issued in the system have no upper limit; and different types are natural and independent, that is, transaction of various electronic checks is natural and parallel, and the parallel has no upper limit in theory, which means that the system performance has a qualitative leap on the basis of a traditional block chain, and the potential of the block chain can be truly and thoroughly released to energize a user.

The invention belongs to the field of functional ceramic materials, and relates to a method for synthesizing large-sized zinc oxide crystals by using microwaves. The method comprises the following steps: weighing a certain amount of a carbon source and zinc oxide powder according to a mass ratio, and uniformly mixing the carbon source with the zinc oxide powder, thus obtaining a mixture I; adding a granular adjuvant, which is 5 to 10 percent of the mass of the mixture I, into the mixture I, and performing uniform mixing, thus obtaining a mixture II; adding the mixture II into a crucible, placing the crucible into a microwave reaction device at room temperature for heating, and after the reaction is carried out for 0.5 to 1.5 hours, growing needle-shaped crystals on the inner wall of the crucible, wherein the needle-shaped crystals are the large-sized zinc oxide crystals. With multiple excellent properties, the zinc oxide may be the next generation of a wide band gap semiconductor material; growth of large-sized single crystals has an important significance for both basic research and actual application; by the adoption of the microwave synthesis technology, a new simple and convenient way is provided for preparation of a large-sized zinc oxide single crystal material, thus promoting application of the material and technology development.

The invention discloses a semiconductor material processing system which comprises a support, supporting rods are fixedly installed at the four corners of the bottom end of the support correspondingly, protective sleeves are fixedly installed at the top ends of the supporting rods and the edges of the top end of the support correspondingly, and fixing rods are installed in the middle of the bottomend of the support at equal intervals, so that the moving stability of a graphite crucible can be improved by a rotation positioning cleaning mechanism, meanwhile, the outer surface of the graphite crucible can be measured and cleaned, so that the cleaning and measuring difficulty of the outer surface of the graphite crucible is reduced, and the phenomenon that in the prior art, the graphite crucible is prone to shaking during running is avoided,meanwhile, the problem that the graphite crucible is inconvenient to measure and clean in the prior art is solved, so that the operation efficiency of personnel is improved, the safety of the graphite crucible during operation can be improved on the premise that the normal use of the graphite crucible is not influenced, the safety coefficient of the device is increased, the damage rate of the device is reduced, and the production cost is reduced. Therefore, the service life of the device is prolonged.

The invention belongs to the technical field of intelligent wearable equipment, and discloses an intelligent voice information control system, method and device for old people. The method is characterized by realizing functions of making a call and surfing the internet through an SIM card, and achieving emergency calling; monitoring health condition and the sleep quality of the old people in realtime through a sensor, and notifying the health data in a voice broadcast mode; sensing the change of the acceleration at the moment of falling through an acceleration sensor to monitor the dangerouscondition of the old people and recognize falling, and notifying family members or nearby hospitals through modes of network information sending and telephone notification; carrying out positioning through a remote positioning module; and checking the remote positioning information and health monitoring data of the old people in the mobile internet. The device adopts voice recognition technology,is convenient to operate and various in functions, is additionally provided with practical functions such as positioning, voice communication and falling alarm on the basis of traditional mobile phonefunctions, and is convenient to carry, long in standby time, and can realize hearing protection.

The invention discloses a six-degree-of-freedom motion track data processing method of a drop test pre-embedded sensor. The method comprises building a reference system corresponding to object motion based on the ground, building a coordinate system corresponding to object motion based on a drop test pre-embedded sensor, collecting voltage data of monitoring points on the object in the coordinate system in object motion, transforming the voltage data into mechanical data, respectively transforming linear acceleration values of the object monitoring points on all axes of the coordinate system into linear acceleration components of the object monitoring points on all the axes of the reference system, calculating the sum of the linear acceleration components of the object monitoring points on all the axes in the reference system to obtain linear acceleration values of the object monitoring points on all the axes in the reference system, transforming the linear acceleration values into linear acceleration values of the object centroid on all the axes of the reference system, carrying out time integration to obtain centroid linear acceleration values and displacement components of the object centroid on all the axes of the reference system, and drawing a time-history function and a displacement function in object motion. The method has scientific universality and can be widely used in rockfall disaster research.

The invention provides a method and a device for reading data of an NOR flash memory. The method comprises the following steps of: ; receiving pause programming instructions, temporary shutdown of programming operations, and executing an erase operation according to the received erase operation instruction. Receiving pause erase instructions, temporary ceasing erase operations, when the programming operation and the erasing operation are stopped temporarily at the same time, a read operation instruction is received, and if the address of the storage unit needing to be subjected to the read operation is not in the address range of the storage unit corresponding to the programming operation plus the address range of the storage unit corresponding to the erasing operation, the read operationis executed on the storage unit needing to be subjected to the read operation. According to the invention, the NOR flash memory can temporarily stop the programming operation in the programming operation process to carry out the erasing operation; the NOR flash memory has the advantages that the NOR flash memory can be used for erasing the NOR flash memory, the erasing operation is temporarily stopped in the erasing operation process to carry out the reading operation, the functions of the NOR flash memory are enriched, the use flexibility of the NOR flash memory is improved, the technical development and popularization of the NOR flash memory are facilitated, and the use feeling of a user is improved.

The invention relates to the technical field of plant nutrition, in particular to a plant enzyme responsive controlled-release fertilizer and a preparation method thereof, and a plant enzyme responsive nano-carrier and a preparation method thereof. The carrier comprises modified carboxymethyl polysaccharide and an amino modified halloysite nanotube, and a nano-composite carrier with a core-shell structure is formed through esterification reaction. Plant nutrient substances (chemical fertilizers, trace elements and plant growth regulators) are loaded in the tube cavity of the nanotube in a negative pressure adsorption manner, and then the outer layer of the nanotube is coated with a layer of degradable modified carboxymethyl polysaccharide with good biocompatibility through chemical grafting, so that the stability of the fertilizer is improved. The nano-carrier can directly enter crop bodies through plant leaf surfaces, the outer-layer wall material of the nano-carrier is cracked through plant active enzymes in the bodies, so that mesopores or lumen ports in the surface of the nano-carrier are opened, and nutrient substances in lumens are released.

The invention relates to a method for manufacturing a single-chip white light LED based on a lithium aluminate substrate. A femtosecond laser is used to etch nano-sized grooves according to regions in the lithium aluminate substrate to form patterned nanostructures. The grooves with different depths were etched in each region, and then InGaN / GaN quantum wells are grown on the structure. Different areas can emit different wavelengths of light, and the recombination of the light generates white light. No phosphor needs to be coated on the surface of the single-chip LED, and white light emission can be realized just by the luminescence of the single chip itself, so that the cost can be substantially reduced.

The invention provides an indoor swimming machine. The indoor swimming machine comprises a base body, a spring fixing frame, a spring, a baffle, a motor, a blade, a filtering screen, an infrared transmitter, an infrared receiver, a circuit board, an MCU, a relay switch, a small screw and a big screw, wherein the base body is cuboid; a rectangular swimming room is arranged downward below the central region of the top of the base body; a head vertical slot and a tail vertical slot are respectively downward formed from the top surfaces of the head of base body and the tail; a mounting platform is arranged in the head vertical slot; a cylindrical mounting hole is formed in the mounting platform; the motor is fixed on the upper side of the interior of the mounting hole through the small screw; the spring fixing frame is mounted in a ring slot in the mounting hole; the upper end surface of the spring is welded with the bottom surface of the spring fixing frame; the oval baffle is welded with the lower end surface of the spring; the filtering screen is in a rectangular mesh shape and is laid on a check block of the tail vertical slot; the infrared transmitter and the infrared receiver are mounted in the head region of the swimming room; the MCU connects and disconnects the current of the motor through the relay switch, so that the fact that water flows from the head to the tail of the swimming room is realized.

The invention relates to an augmented reality shooting and displaying method, and the method comprises the following steps that an augmented reality processor shoots an environment image through a shooting module, and processes the environment image acquired by the shooting module through a processing module; an optical-mechanical module generates a superimposed image required to be superimposed on the environment image by a user through the mobile processor, and then displays the environment image and the superimposed image through the AR display system. Each user can carry out image shootingthrough the shooting module of the augmented reality processor, and the superimposed image required to be superimposed on the environment image by the user is generated through the mobile processor;after the environment image and the superimposed image are post-processed and spliced through the processing module, the environment image and the superimposed image can be displayed through a light machine AR display system, and therefore the virtual superimposed image can be applied to the image of the real environment. Therefore, the augmented reality effect is achieved. The invention further provides an augmented reality shooting and displaying system capable of realizing the scheme.