41results about How to "Speed ​​up the practical process" patented technology

The invention is based on five highly-effective sensor network access control modes: which are one-way key chain access control, multi key chain access control, Merkle tree-based access control, expanded Merkle tree access control, and an mode of canceling the key chain of captured users with Merkle. The method uses said five access control modes to reduce the storage expense of sensor node and increase the flexibility and expandability of access control so as to support mass users to access network. The invention is compatible with current sensor network data broadcast protocol.

The invention relates to a flexible replaceable screw thread pair driving ultrasonic motor, belonging to the field of ultrasonic vibration application. The performance of the ultrasonic motor is not limited by the material of a screw thread pair and the dimensional parameter of a screw thread structure, the travel error of screw thread pair transmission is eliminated, and the output performance, the application flexibility and the positioning accuracy of the motor are improved. The flexible replaceable screw thread pair driving ultrasonic motor mainly comprises screw thread output shafts, a replaceable screw thread pair driving element and an ultrasonic exciting vibrator. Vibration exciting elements are fixedly bonded on at least four flat side faces or in grooves on the peripheral side faces of a vibrator to be excited. The replaceable screw thread pair driving element is of an integral type or a segmental type and is installed and fixedly bonded in paired installation center holes in a matching manner, and the screw thread output shafts are in thread connection with the replaceable screw thread pair driving element and are paired to output rotary and linear movements. With the flexible replaceable screw thread pair driving ultrasonic motor, the performance output flexibility and the flexible application diversity of this kind of ultrasonic motors are increased, the output characteristic of the motor is improved, and the flexible replaceable screw thread pair driving ultrasonic motor can be applied to the fields of aerospace, automobile industry, medical apparatuses and instruments, optical driving and precision positioning systems and the like.

The invention belongs to the field of perovskite structure environment-compatible piezoelectric ceramics and particularly relates to a sodium potassium niobate-sodium bismuth zirconate titanate lead-free piezoelectric ceramic. The lead-free piezoelectric ceramic is represented by the general formula (1-x) (KuNav) NbO3-xBi0.5Na0.5Zr1-yTiyO3, wherein x is more than 0 and not more than 0.05, y is not less than 0 and not more than 0.3, u is not less than 0.40 and not more than 0.55, v is not less than 0.45 and not more than 0.60, and u+v=1. The lead-free piezoelectric ceramic provided by the invention has the advantages of higher piezoelectric performance, low price of used raw materials and cost saving, is favorable for promoting the practical process and can be applied to industrial production.

The invention discloses a wireless locating method of a mixed-type multiple-mobile-robot system. The mixed-type multiple-mobile-robot system comprises a monitoring center, a position-known robot and a plurality of position-unknown robots, wherein the monitoring center achieves control of the system and locating result display, the position-known robot is composed of a four-wheel mobile machine body, a power source management system, a sensor system, a wireless communication system and a control processing system, and each position-unknown robot is composed of a motion mechanism, a power source module, a sensor module and a wireless communication control module. The position-known robot can obtain positional information through the sensor system, motions to three different positions through dynamic motion, positional information in different positions is broadcast and sent to the position-unknown robots, and each position-unknown robot can calculate the distance between the position-unknown robot and the three different positions according to combination of the wireless signal strength and attenuation models of wireless signals propagation. Therefore, the positional information of the position-unknown robots can be obtained by means of trilateration.

The invention provides a connection method for MgB2 superconductive wire rods, and the method comprises the following steps: 1, carrying out the acid dipping of a first MgB2 superconductive wire rod and a second MgB2 superconductive wire rod, and enabling to-be-connected ends to be polished into the shape of a slope; 2, enabling the to-be-connected end face of the first MgB2 superconductive wire rod to be covered with Mg-B mixed powder in a laying manner, and then enabling the to-be-connected end face of the first MgB2 superconductive wire rod to be connected with the second MgB2 superconductive wire rod in a butt joint manner; 3, enabling Nb foil to wrap the first and second MgB2 superconductive wire rods after butt joint, then enabling a Cu pipe to sleeve the Nb foil, and obtaining a to-be-pressed product; 4, carrying out the pressing of the to-be-pressed product through an oil press, and obtaining a pressed product; 5, carrying out the sintering of the pressed product, and obtaining a connected MgB2 superconductive wire rod. According to the connected MgB2 superconductive wire rod, the resistance value of a connector of the connected MgB2 superconductive wire rod is less than 1*10<-10> ohm, and the superconductive connection performance is good.

The present invention relates to a lithium ion battery optimization charging technology based on charging voltage curve fixation control. The lithium ion battery optimization charging technology comprises: constructing an optimized charging mathematical model based on the analysis of the lithium ion battery charging mechanism; adopting the constant current charging voltage and the time data of the new battery 100%SOH at different rates as the input parameters of the optimized charging mathematical model; respectively evaluating the battery characteristic variable and the current parameter in the model by using a genetic algorithm; completing the charging voltage curve simulation and actual data acquisition by using the obtained charging current standard model; and with the correcting of the error between the simulation date and the actual data, determining the fixed voltage curve for controlling the charging process. According to the present invention, with the technology, the charging control on the lithium ion battery can be achieved, and the purposes of charging time shortening, charging efficiency improving and battery service life prolonging are achieved.

The invention relates to an intensive type hydraulic axial mobile two-phase variable valve driving system and a control method thereof and belongs to the field of internal combustion engine valve driving. The intensive type hydraulic axial mobile two-phase variable valve driving system comprises camshaft shaft sleeves, first execution mechanisms, second execution mechanisms, a first control mechanism, a second control mechanism, a high-pressure source and a low-pressure source and the like. The camshaft shaft sleeve is provided with two cams and two switching grooves. The first control mechanism controls the first execution mechanisms of a plurality of cylinders to move the camshaft shaft sleeves of these cylinders leftwards, the second control mechanism controls the second execution mechanisms of the plurality of cylinders to move the camshaft shaft sleeves of these cylinders rightwards, finally switching between the two cams is implemented, the system structure is greatly simplified, and the cost is reduced. According to actual requirements, different cams are adopted, requirements for running under different working conditions or in different modes are met, and the goal of comprehensively improving engine dynamic property, fuel economy, emission performance and brake safety is achieved.

The invention discloses a direct-current droplet generator and a preparation method thereof. The generator is characterized in that the generator has a structure in which all electrodes are placed above a solid surface and do not need to be grounded, so that the direct-current liquid drop generator can be constructed on any surface including a block body, a thin film and a coating; the droplet generator structure comprises a solid hydrophobic surface, an upper electrode, a collector pin, a lower electrode, an upper electrode lead and a lower electrode lead. The solid surface is a hydrophobic surface made of any artificial or natural materials, the upper electrode and the lower electrode are placed on the solid surface at a certain interval, the current collecting needle can be of an independent conductive tip structure and can also be directly machined on the electrode, and the generator can collect electric energy by impacting the surface through liquid drops. Compared with the prior art, the direct-current droplet generator can be constructed on any solid surface, the collected liquid mechanical energy is converted into the electric energy with the direct-current characteristic, and the direct-current droplet generator has the advantages of being simple in preparation process and low in cost. The open-circuit voltage of the direct-current liquid drop generator is up to kilovolt, a power management circuit is not needed, and the direct-current liquid drop generator can directly drive micro electronic devices to work or charge an energy storage unit. The structure of the direct-current generator has the functions of power generation, rectification and energy storage at the same time, a new technology based on solid-liquid interface water energy collection is developed, and the practical progress of water energy collection is greatly accelerated; meanwhile, the device is also a sensor or a probe. Due to the fact that the device achieves effective separation of charges, the device has extremely high application value in the aspects of droplet energy collection and self-driven sensing.

The invention belongs to the field of third-party IP core trusted willfulness verification, in order to propose a new hardware Trojan horse method, improve the detection efficiency of the hardware Trojan horse, and effectively solve the limitation problem of the reference model in the actual test process by distributed detection, thereby further promoting the practical process of IP core securityvulnerability detection. Therefore, the technical proposal adopted by the invention is that the hardware Trojan horse side channel analysis method based on the multi-IP core determines the mutual deduction relationship among the multi-IP cores according to the side channel analysis technology, and when the side channel information of one of the IP cores is different from the ideal side channel information, the hardware Trojan horse is determined to exist. The invention is mainly applied to IP core trusted willfulness occasions.

The invention discloses a wireless locating method of a mixed-type multiple-mobile-robot system. The mixed-type multiple-mobile-robot system comprises a monitoring center, a position-known robot and a plurality of position-unknown robots, wherein the monitoring center achieves control of the system and locating result display, the position-known robot is composed of a four-wheel mobile machine body, a power source management system, a sensor system, a wireless communication system and a control processing system, and each position-unknown robot is composed of a motion mechanism, a power source module, a sensor module and a wireless communication control module. The position-known robot can obtain positional information through the sensor system, motions to three different positions through dynamic motion, positional information in different positions is broadcast and sent to the position-unknown robots, and each position-unknown robot can calculate the distance between the position-unknown robot and the three different positions according to combination of the wireless signal strength and attenuation models of wireless signals propagation. Therefore, the positional information of the position-unknown robots can be obtained by means of trilateration.

The invention discloses a method for eliminating the torsion inertia force of a double-rotor piston engine. The double-rotor piston engine comprises two sets of power units each of which consists of a power cylinder assembly and a differential driving assembly connected with the power cylinder assembly; and a reverse synchronization assembly for offsetting the torsion inertia force produced when parts in the power units do non-uniform rotation is arranged between the two sets of the power units. The double-rotor piston engine designed by the method has no torsion inertia force and has the advantages of various power output modes, reliability and high adaptability, and transmits stably.

The invention provides a method for preparing hydrogen serving as a hydrogen source of a fuel battery. The method comprises the following steps: mixing borane ammonia complex and highly exothermic hydride, reacting the mixture with liquid water so as to produce hydrogen, wherein the reaction hydrogen desorption speed rate can be regulated through controlling the mixing mode of the borane ammonia complex and highly exothermic hydride and the mixing ratio of the borane ammonia complex and highly exothermic hydride, so that available hydrogen capacity in the borane ammonia complex and highly exothermic hydride can be completely released finally, wherein the highly exothermic hydride is hydride with hydrolyzed heat being greater than 34kJ / kg. The method is high in hydrogen desorption efficiency, stable and controllable in hydrogen desorption process, and applicable to the hydrogen source of minitype fuel batteries.

The invention discloses a mulberry transgenic method based on agrobacterium tumefacien mediated hybernacle injection. According to the method, a trace amount of agrobacterium tumefacien engineering bacterium conversion liquid containing target gene recombinant vectors is directly injected into mulberry hybernacles to sprout; the hybernacles infect hybernacle top end meristematic tissue meristematic cells and hybernacle axillary bud meristematic cells to obtain successfully converted bud meristematic cells; the bud meristematic cells differentiate and grow to obtain transgenic transgenic branches and buds; then, transgenic grafting transgenic seedlings or transgenic mulberry seeds are obtained through the mulberry grafting vegetative propagation or female mulberry fruit and male flower hybridization sexual propagation technology, and further, a great amount of mulberry transgenic seedlings and seeds can be obtained. The method has the advantages that complicated steps such as tissue culture and requirements on sterile operation environment and the like are avoided; the operation is directly carried out on plants, and can be completed in natural environment; the cost is low; the operation is simple; the technical skill can be easily mastered; the repeatability is good; the conversion efficiency is higher; the transgenic plants, seedlings and seeds suitable for the local wild natural conditions can be fast obtained; the method is applicable to various mulberry varieties, and belongs to a novel efficient and practical mulberry transgenic method.

The invention discloses a slight abrasion measurement method based on shelter processing technology, which comprises placing a large sample and a small sample in a vacuum processing chamber, sheltering the partial surface of the large sample by placing the small sample on the surface of the large sample, performing surface treatment on the large sample and the small sample, forming a processed area and an unprocessed area on the surface of the large sample, and then removing the small sample; taking the large sample and the small sample out of the vacuum processing chamber, and using a pin plate abrading machine or a reciprocating abrading machine to abrade the unprocessed area and the processed area which are formed on the large sample to form abraded marks; and adopting an interference microscope to measure, and sending the measurement data to a digital camera or a computer. The slight abrasion measurement method can reduce effects of volatility of pretreatment conditions and vacuum processing conditions, can improve processing efficiency on the vacuum surfaces of materials, improve repeatability of processing technology and quickens practical process of processing technology.

The invention discloses a method for generating hydrogen by hydrolyzing lithium borohydride and a device used for the method. The method comprises the following steps of: dissolving lithium borohydride in an organic solvent which can not be adsorbed on a proton exchange membrane or a fuel cell membrane to obtain an organic saturated solution or an organic suspension, and filling liquid water to regulate the concentration of lithium borohydride so as to realize the regulation of the speed of releasing hydrogen in reaction until the content of theoretical hydrogen in lithium borohydride is completely released finally. The device comprises a liquid water storage room (1), a water feeding capillary (2), a hydrolysis reaction room (3), a gas feedback pipeline (5) and a port (4) which is butted with the fuel cell, wherein one end of the water feeding capillary (2) is communicated with the liquid water storage room (1), and the other end of the water feeding capillary (2) is arranged in the hydrolysis reaction room (3); and one end of the gas feedback pipeline (5) is inserted in the liquid water of the liquid water storage room (1), and the other end of the water feeding capillary (2) is communicated with the hydrolysis reaction room (3). The method is high in hydrogen release efficiency and stable and controllable in hydrogen release process.

The invention is based on five highly-effective sensor network access control modes: which are one-way key chain access control, multi key chain access control, Merkle tree-based access control, expanded Merkle tree access control, and an mode of canceling the key chain of captured users with Merkle. The method uses said five access control modes to reduce the storage expense of sensor node and increase the flexibility and expandability of access control so as to support mass users to access network. The invention is compatible with current sensor network data broadcast protocol.

The invention discloses a quick mapping method for normally open defects of a nano CMOS (Complementary Metal Oxide Semiconductor) circuit represented by a matrix, which comprises the following steps:defining the normally open defects of three nano CMOS circuits, and constructing a given nano CMOS circuit into a nano CMOS matrix to be represented according to the connected domain constraint and circuit defect condition of the nano CMOS circuit; then, according to the fan-in and fan-out relationship among the nodes in the logic circuit to be mapped, constructing the logic circuit into a logic matrix for representation; then, establishing matching rules of the two matrixes, and finishing searching of matchable elements between the matrixes through an evolutionary algorithm; and finally, carrying out element matching on the two matrixes to finish unit mapping. According to the invention, the circuit mapping complexity can be simplified, the circuit solving efficiency and the solving scaleare improved, the mapping area is reduced, and the influence of the normally open defect on the logic function of the nano CMOS circuit is quickly eliminated under the condition of improving the unitutilization rate and the mapping success rate, so that the fault-tolerant mapping of the normally open defect of the nano CMOS circuit is quickly and effectively completed.

The invention belongs to the field of integrated circuit trustworthiness and further promotes the practical process of hardware Trojan for improving the precision of side channel analysis. The invention relates to a hardware Trojan detection method based on local area circuit mutual reference. The method comprises the following steps that (1) a circuit area is divided; (2) a side channel test platform is established; (3) the side channel information of M sub-regions is tested under the excitation of the same test vector set; (4) regional circuit relationship is determined; (5) hardware Trojanis verified; (6) loop iteration is verified. The method is mainly applied in the field of integrated circuit trustworthiness detection.

The invention discloses a silkworm PABP (polyadenylic acid bonding protein) bonding protein interacting factor gene BmPaip1. The nucleotide sequence of the gene BmPaip1 is shown as SEQIDNO.3, the open reading frame of the gene BmPaip1 is 1194bp long, composed of eight exons and codes 398 amino acids, theoretical protein molecular weight is 44kDa, and isoelectric point pI is equal to 5.02; and SMART online software analysis shows that the bits from 100 to 398 in the amino acid sequence of the gene BmPaip1 of a silkworm are highly homologous with an eIF4G protein of an eucaryon, and expression detection in insect cells shows that expression level of a reporter gene LUC (luciferase) can be obviously improved in cells genetically modified by the gene BmPaip1 of the silkworm, so that the gene BmPaip1 of the silkworm can be combined with eIF4E and eIF4A to form a translation initiation complex and can be used for improving translation efficiency of an exogenous gene.

The present invention relates to a lithium ion battery optimization charging technology based on charging voltage curve fixation control. The lithium ion battery optimization charging technology comprises: constructing an optimized charging mathematical model based on the analysis of the lithium ion battery charging mechanism; adopting the constant current charging voltage and the time data of the new battery 100%SOH at different rates as the input parameters of the optimized charging mathematical model; respectively evaluating the battery characteristic variable and the current parameter in the model by using a genetic algorithm; completing the charging voltage curve simulation and actual data acquisition by using the obtained charging current standard model; and with the correcting of the error between the simulation date and the actual data, determining the fixed voltage curve for controlling the charging process. According to the present invention, with the technology, the charging control on the lithium ion battery can be achieved, and the purposes of charging time shortening, charging efficiency improving and battery service life prolonging are achieved.

Antimony potassium-sodium niobate leadless piezoelectric ceramics provided by the invention is a compound with its chemical formula expressed as (1-x)K1-yNayNb1-zSbzO3-x(Bi0.5-uMu)R0.5ZrO3 or (1-x)K1-yNayNb1-zSbzO3-x(Bi0.5-uMu)R0.5ZrO3-aQ, wherein x is less than or equal to 0.08 and greater than or equal to 0; y is less than or equal to 0.68 and greater than or equal to 0.4; z is less than or equal to 0.04 and greater than or equal to 0; u is less than or equal to 0.05 and greater than or equal to 0.04; M element is one of lanthanide Sm, Nd and La; R element is at least one of Na, K, Li and Ag; Q is a metallic oxide; a is molar percentage of the metallic oxide Q in the compound (1-x)K1-yNayNb1-zSbzO3-x(Bi0.5-uMu)R0.5ZrO3; and the metallic oxide Q is one of Zn oxide, Cu oxide and Mn oxide. The antimony potassium-sodium niobate leadless piezoelectric ceramics can further raise and enhance piezoelectric property of potassium-sodium niobate (KNN) leadless piezoelectric ceramics.

The invention provides a multi-vibrator combined large-thrust precision positioning ultrasonic motor excited by ultrasonic vibrators, belongs to the field of ultrasonic vibration application and aims at further improving the output performance of a thread pair driving ultrasonic motor, generating large thrust and improving positioning accuracy of the motor. The multi-vibrator combined large-thrust precision positioning ultrasonic motor mainly comprises more than two combined ultrasonic vibrators capable of working independently, a linear actuator, a thread pair driving element and a thread output shaft, wherein an excitation element is fixed on the flat lateral surface of an excited main body or fixed in a groove of the excited main body, two end surface of the linear actuator are arranged in two adjacent ultrasonic vibrators in pressing pairing mode, the thread output shaft is respectively connected with two head-end ultrasonic vibrators and at least one internal thread shaft sleeve in threaded mode to be in output rotating and linear movement, and locking of the ultrasonic vibrators and the thread output shaft is achieved by extending or shortening the linear actuator. The multi-vibrator combined large-thrust precision positioning ultrasonic motor can achieve flexible output and is applied to the fields including aeronautics and astronautics, the automobile industry, automation, medical equipment, optical driving and precision positioning.

The invention discloses a method for eliminating the torsion inertia force of a double-rotor piston engine. The double-rotor piston engine comprises two sets of power units each of which consists of a power cylinder assembly and a differential driving assembly connected with the power cylinder assembly; and a reverse synchronization assembly for offsetting the torsion inertia force produced when parts in the power units do non-uniform rotation is arranged between the two sets of the power units. The double-rotor piston engine designed by the method has no torsion inertia force and has the advantages of various power output modes, reliability and high adaptability, and transmits stably.

The invention belongs to the field of third-party IP core trustworthiness verification. In order to propose a new method for hardware Trojans, improve the detection efficiency of hardware Trojans, realize distributed detection and effectively solve the limitation problem of reference models in the actual testing process, and further promote IP Practical progress of nuclear security vulnerability detection. For this reason, the technical solution that the present invention adopts is, based on the hardware Trojan side channel analysis method of multiple IP cores, determine the mutual derivation relationship between multiple IP cores according to the side channel analysis technology, when the side channel information of one of the IP cores is consistent with the ideal If there is a discrepancy in the side channel information, it is determined that there is a hardware Trojan horse. The invention is mainly applied to the occasion of IP core trustworthiness.