327results about How to "Realize complementary advantages" patented technology

The invention discloses a target detection method based on 3D laser radar and image data. The method comprises the following steps: acquiring 3D point cloud data and camera images of the surrounding environment by using 3D laser radar and camera, and pre-processing the 3D point cloud data; filtering out ground points in the 3D point cloud data, performing a spatial clustering on the remaining non-ground points, and extracting the 3D interest region of the target; calibrating the external parameters of the coordinates of the 3D laser radar and the camera, and mapping the 3D interest region of the target to the corresponding camera image according to the calibrated parameters, and extracting the corresponding 2D interest region in the camera image; performing a feature extraction on the 2D interest region using a deep convolution network to locate and identify objects in the 2D interest region. According to the target detection method based on 3D laser radar and image data, the complementarity between the 3D laser radar and the camera data is fully utilized, the accuracy and timeliness of the target positioning and classification recognition of the scene are improved, and the invention can be used for real-time detection of the target in an unmanned vehicle.

The invention discloses a multifunctional concrete structure endurance protective agent as well as the preparation and application method thereof. The protective agent provided by the invention contains the following ingredients of: an organic / inorganic composite fluorosilicone-acrylate copolymer, lithium silicate, sodium silicate, lithium molybdate, sodium tetraborate, sal glauberi, 1,2-aminoazophenylene, nanometer titanium dioxide, anhydrous ethanol and water. The protective agent can penetrate inside concrete, wherein a densification ingredient can minimize internal holes and cracks to raise the compactness of concrete, and a rust-resistant ingredient can penetrate into concrete and be adsorbed on the surface of steel bar so as to passivate and protect the steel bar; the low-surface energy silicon fluoride ingredient can be solidified to form a cured film on the surface of concrete so as to endow the protective agent with the hydrophobic performance; a nanometer ingredient can endow the cured film layer with properties of resisting ultraviolet and ageing and improving the organic polymer performance as well as the self-cleaning performance. In addition, hydroxy generated from the hydrolysis of siloxane group can perform a condensation reaction with hydroxy on the surface of concrete to produce chemical bond, so as to raise the anchoring strength between the film and concrete and improve the interface combination. The protective agent provided by the invention can be widely applied in various concrete structure engineering protections to raise the service life of concrete.

The invention relates to a mobile robot path planning method and system based on a genetic ant colony algorithm. The mobile robot path planning method includes the steps that 1, modeling is conducted on the environment by establishing a coordinate system; 2, part of optimal solutions obtained through the genetic algorithm are converted to pheromones initial values of the ant colony algorithm; 3, optimum path search is conducted again through the ant colony algorithm, after optimum path search is ended, interlace operation is conducted on paths meeting the requirements of conditions, and the optimum path is finally obtained. The mobile robot path planning method and system overcome inevitable defects existing in a single ant colony algorithm, in other words, the ant colony algorithm is greater in blindness at the initial stage of search, the ant colony algorithm and the genetic algorithm are complementary in advantages, the search range of path search is shortened, and search efficiency of the optimum path is improved.

The present invention provides an intelligent vehicle-mounted system, wherein the hardware structure comprises a central processing controller, a wireless communication module, a power module, a GPS positioning module, a storing module, an audio / video broadcasting module and a human-machine interaction module, wherein the wireless communication module, the power module, the GPS positioning module, the storing module and the audio / video broadcasting module are connected with the central processing controller. The vehicle-mounted system software mainly comprises a main interface program, GPS positioning navigation software and multimedia broadcasting software. The vehicle-mounted system and other vehicle-mounted terminal form an Ad Hoc network through the wireless communication module. The communication protocol of vehicle-mounted system adopts an Ad Hoc routing protocol based on GPS and electronic map and an MAC protocol with adjustable power. The vehicle-mounted system supports the functions of enciphering and authenticating. The vehicle-mounted system can aim at different user grades for allocating authority and executing related authentication to the user. The independent and distributed intelligent vehicle-mounted terminal system of the invention can be applied to various vehicles for realizing the interconnection, intercommunication and information sharing of Ad Hoc mode between intelligent vehicle-mounted systems and for realizing the multi-hop communication between the vehicle and the stationary platform. The intelligent vehicle-mounted system of the invention has the advantages of intelligentization, low cost, convenient use, etc.

The invention discloses a preparation method of graphene oxide grafted POSS (polyhedral oligomeric silsesquioxane) modified epoxy resin. The preparation method comprises the following steps of: taking crystalline flake graphite as a raw material, preparing graphite oxide through adopting a Hummers oxidation method, further adding the graphite oxide into distilled water, forming a uniformly-dispersed graphene oxide mixed solution under an ultrasonic environment, further adding POSS and a strong catalyst, performing full reaction, then filtering, washing and drying to get black powder; and further uniformly dispersing graphene oxide / POSS in an epoxy resin matrix, cross-linking and bonding under the action of a curing agent to get a composite material, molding by casting, cooling and demolding. According to the preparation method disclosed by the invention, the POSS is successfully grafted on a graphene oxide sheet layer, and advantages of the graphene oxide structure and the POSS structure are complemented, so that the preparation method has the advantages of low cost and easy obtaining of the raw material, easy operation, simple process, good reproducibility and obvious toughening modification effect against the epoxy resin.

The invention discloses a composite fault diagnosis method for a diesel engine and a diagnosis system. The fault of a fuel supply system of the diesel engine can be diagnosed based on comprehensive analysis of fuel flow monitoring, exhaust emissions, temperature detection and the like in the state parameter measuring method. In vibration analysis, vibrating signals are measured by a vibration acceleration sensor, noise is removed via empirical mode decomposition (EMD), and then characteristic parameters of the vibration signal acceleration are extracted in a manifold learning method. For failure of a piston cylinder, vibration analysis and fuel analysis are combined, and the degrees of friction and wear are judged according to the vibration amplitude and the content of Fe. The composite fault diagnosis of the diesel engine can be realized based on integration of the fault characteristic information and comparison with typical failure characteristics. The diesel engine fault diagnosis system is developed on the basis of integration of information of multiple characteristics, all characteristic information is fully utilized, the speed and accuracy of diagnosis can be improved, the advantages can be complemented, and the level of diesel engine fault diagnosis can be improved.

The invention relates to a route planning method and system based on a genetic ant colony algorithm. The route planning method comprises the following steps: S1, converting a part of optimal solution obtained by a genetic algorithm into a pheromone initial value of an ant colony algorithm; and S2, performing route optimization after the ant colony algorithm, and then performing crossover operation on the paths satisfying the condition to obtain an optimal path. The route planning method and system overcome inevitable defects in the single ant colony algorithm, namely high blindness of the ant colony algorithm at the initial search phase, realize advantage complement of the ant colony and genetic algorithms, reduce the path search range and improve the search efficiency of the optimal path.

The invention discloses a preparation method of a three-dimensional reduced graphene oxide / polyaniline composite material, which comprises the following steps: 1) uniformly stirring a graphene oxide raw material and deionized water in a reactor to obtain a graphene oxide dispersion solution; 2) adding aniline, stirring uniformly, adding medium acid, stirring uniformly under ice bath conditions, and adding an initiator; filtering the reaction product, washing the filter residue, and drying to obtain a graphene oxide / polyaniline composite material; and 3) uniformly mixing the graphene oxide / polyaniline composite material with the graphene oxide dispersion solution, putting in a closed reactor, carrying out hydrothermal reaction to form a three-dimensional reduced graphene oxide polyaniline / composite material aquagel, and drying to obtain the three-dimensional reduced graphene oxide / polyaniline composite material. The polyaniline nano particles are uniformly dispersed among the reduced graphene oxide sheets to form the three-dimensional network-structure composite material. The composite material has the advantages of large specific area, high electric conductivity and high structural stability of polyaniline.

The invention relates to a preparation method of a silicon dioxide graft graphene oxide / rubber composite material, which comprises the following steps: by using natural rubber as a main material and superhigh-wear-resistance carbon black, high-dispersity silica white, silica white dispersing agent, silicon dioxide graft graphene oxide nanoparticles, silane coupling agent, heat stabilizer HS-80 and anti-reversion agent WK-901 as auxiliary materials, mixing according to certain parts by weight, compounding with a Banbury mixer to prepare compounded rubber, and extruding the compounded rubber with an extruder to prepare the semifinished product rubber. The composite material blended from the silicon dioxide graft graphene oxide and natural rubber has the characteristics of low heat generation, high tensile strength, high tearing strength, favorable abrasion resistance, favorable heat stability and the like. When being applied to aircraft tire tread rubber, compared with the traditional tread rubber, the rubber has the advantages of higher use safety and longer service life.

The invention relates to a six-wheel / leg half ball shell detecting robot, pertaining to the celestial body detecting facility field, which comprises a body and a moving mechanism connected which the body. The body comprises an upper chassis and a lower chassis, and a vision mechanism positioned at the upper end and a half ball shell; wherein the upper and lower chassis consists of two layers of round tray type structures which are parallelly arranged; the interlayer of the component is provided with an energy module; the circumferential edge between the upper chassis and the lower chassis is evenly provided with six wheel / leg structures. The middle part of the upper chassis is provided with an interlayer supporting component which fixes the vision mechanism which can be lifted. The robot can adapt to special environment through changing the different moving manners of the robot. The invention has the advantages of the foot type walking mechanism of a wheel type steering mechanism; the six groups of wheels / legs can realize a plurality of moving manners so as to realize no-radius turning; the two legs of the detecting robot can realize the function of an operation arm; flexible and reliable operation also can be progressed in special environment through arranging various additional devices.

The invention relates to a method for preparing a building material by using phosphogypsum. The method comprises the steps of firstly, preparing a dry blend by using the phosphogypsum, aluminosilicate industrial residues, a calcium cementing material and aggregate, then adding water or water with a dissolved activator to obtain a wet mixture, standing, carrying out static pressure molding, and finally, carrying out natural or steam curing to obtain an ultrahigh strength material. The method solves the problems that the phosphogypsum has more impurities and is difficult to utilize, and can be used for preparing the ultrahigh strength building material with high compressive strength by enabling the phosphogypsum to be coupled with a great deal of aluminosilicate industrial residues. The ultrahigh strength building material can be used for preparing various high-strength and high-durability products such as high strength building bricks, high strength road bricks, high strength water permeable bricks, road edge stones and various decorative boards by changing a molding mould, and overcomes the defects that gypsum products are low in strength and poor in water resistance and durability. The method realizes functionalization, greenization and high value while consuming a great deal of phosphogypsum and aluminosilicate industrial residues, thus having good economic benefit and social benefit.

The invention discloses a system and method for detecting and processing composite data of a radar video. The method comprises the following steps: a radar detects a target, and acquires target data and environmental coordinates of the target; after the radar realizes target tracking, video acquisition equipment acquires image information and pixel coordinates of the target; a radar video information fusion system performs information fusion of the target data and the image information of the target; and information fusion includes coordinate conversion, time aligning, data decision and first data association. According to the system and the method disclosed by the invention, fusion of the target data acquired by the radar and image information acquired by the video acquisition equipment is realized through information fusion including coordinate conversion, time aligning, data decision and data association; complementation of advantages of radar data and video data is realized; the stability is high; influence by environment is small; and the anti-interference capability is high.

The invention provides a method for estimating power system reliability. The method comprises the steps of (1) initializing the parameters of the power system, (2) calculating the PL(Xi) of each state of the power system, (3) calculating the W(Xi; u, v<k-1>) of each state of the power system, (4) updating the parameters as shown in the description, (5) determining whether the equation rk=PLtotal is satisfied, (6) calculating the dual sampled system load shedding flag as shown in the description and a shed load amount as shown in the description, (7) calculating W(Xi; u, v*), and calculating LOLP and EDNS as well as coefficients of convergence beta LOLP and beta EDNS, (8) determining whether beta LOLP is smaller than or equal to beta MAX and beta EDNS is smaller than or equal to beta MAX or N2 is greater than or equal to NMAX, and (9) outputting a reliability index. The method for estimating the power system reliability is still efficient and reliable in the reliability estimation of a reliable system having relatively low element failure rate, and therefore, the method is applicable to the reliability estimation of different reliable systems.

A pig posture monitoring device and method based on a micro-inertial sensor, the device includes an information collection module for collecting individual information of pigs; a posture calculation module for fusing and filtering the information collected by the information collection module and outputting the posture angle; and The PC host computer used to recognize the attitude of pigs according to the output results of the attitude calculation module, the invention saves packaging space, and adopts the fourth-order Runge-Kutta optimization algorithm to update the attitude information, through the dynamic Kalman filter model, using the acceleration The gyroscope and magnetometer compensate the drift of the gyroscope, realize the complementary advantages of the gyroscope attitude and the accelerometer and magnetometer attitude, improve the accuracy and reliability of the dynamic measurement of the system, not only significantly reduce the equipment cost, but also have strong applicability. It can meet the requirements of real-time monitoring, and can replace the breeders to observe the posture of the pigs at each moment, so as to detect the suspected pigs early and reduce economic losses.

The invention discloses a GNSS (Global Navigation Satellite System) multi-mode multiplexer module. The GNSS multi-mode multiplexer module comprises an antenna multiplexer and a channel multiplexer, wherein the antenna multiplexer is used for receiving a downlink channel satellite signal and transmitting the downlink channel satellite signal into a four-in-one low-noise filtering combination amplifier for combination; the combined signal further comprises a Beidou first-generation uplink channel signal transmitted through a Beidou first-generation power amplifier; the combined downlink channel signal and an uplink channel transmitted signal are subjected to bidirectional equivalent shunting through a signal transmitting and receiving hybrid circuit I; and the channel multiplexer is used for performing bidirectional equivalent combination on the downlink channel signal and the uplink channel signal through the a signal transmitting and receiving hybrid circuit II, and shunting a four-path downlink channel satellite signal in a four-in-one signal power divider. A plurality of signals are shunted through a multi-mode power divider; the isolation degree between a transmitted signal and a received signal is increased through adoption of a transmitting and receiving hybrid filtering circuit pair; interference among signals is eliminated; and low-power-consumption running of a whole system is ensured through adoption of a controllable power amplifier.

The present invention relates to one kind of modified asphalt material for road and its preparation. The modified asphalt material is prepared with asphalt with high wax content as base material and through adding powdered styrene-butadiene rubber, natural asphalite and organic metallic soap. The modified asphalt has the features of high temperature stability, low temperature crack resistance, fatigue resistance, peeling resistance, antiageing, etc. as well as improved comprehensive road use performance.

The invention relates to a multi-ion-beam sputter-deposition technology for doping a diamond-like carbon (DLC) coating. The technology is characterized by comprising the following steps of: firstly, washing to removing a polluted layer on the surface of a workpiece by utilizing ultrasonic waves, and carrying out ion beam bombardment washing on the surface of the workpiece by utilizing an argon-ion beam generated by an ion source to obtain an atomic scale clean surface; then preparing a gradient transition layer by utilizing an auxiliary ion beam sputter-deposition method; and finally, synthesizing a multi-element doped DLC coating on the gradient transition layer by utilizing multi-ion-beam sputtering and low-energy ion beam auxiliary deposition. In the process of synthesizing the multi-element doped DLC coating by utilizing the multi-ion-beam sputtering and the low-energy ion beam auxiliary deposition, carbon particles and metallic particles which are generated by bombarding a graphite target and a metallic target are deposited by using a sputtering ion source, and gas ions generated by an auxiliary deposition ion source continuously bombard the surface of a grown film layer to regulate and control the microstructure of the film layer and realize multi-element doping.

The invention discloses a high-precision indoor fusion positioning method based on GSM / MEMS fusion. The method comprises the following steps: first, performing position fingerprint positioning by adopting searching and matching by utilizing position fingerprint characteristics caused by multipath and non-line-of-sight transmission of a GSM radio signal; then, resolving the walking speed and the course angle of a target pedestrian according to output data of an inertial sensor device, and obtaining relative position information of a user; finally, fusing position results output by the GSM and the MEMS by utilizing an anti-tolerance extended Kalman filter. According to the method, a position fingerprint positioning result in a GSM environment and the output data of the MEMS are combined by introducing the anti-tolerance extended Kalman filtering algorithm, so that the advantages of positioning systems compensate each other; the influence on positioning precision caused by an accumulative error in an MEMS device positioning and RSSI disturbance in GSM positioning can be overcome effectively; a positioning blind spot can be covered in all directions; a high-precision positioning effect is realized in indoor environment.

The invention discloses a multiple sources water heating system of integrated heat pump for heat collecting / energy storing / evaporating, which comprises a compressor, a water-cooled condenser, a heat collector / an energy accumulator / an evaporator, an air-source evaporator, a water pump and a water tank, wherein the heat collector / the energy accumulator / the evaporator is in parallel connection with the air-source evaporator, and in series connection with a refrigerant pipe of the compressor and the water cooled condenser to form a closed loop circuit, and the water-cooled condenser is in series connection with the water pump and the water tank via the water pipe to form a closed loop circuit. The heat collector, the energy accumulator and the evaporator that unify the system which is capable of removing the intermediate part of heat transfer. The system is capable of storing solar energy via latent heat from solid-liquid phase heat transfer to enable the water heater to work all-weather in high efficiency, and resolving problem of instability of system work due to intermittency of the solar energy. Using the solar energy as a low temperature heat source for heat pump to produce hot water is a breakthrough of the mode of heating directly of traditional water heater, further can overcome the defect of low operating efficiency of the heat pump in winter, thereby all-weather providing hot water for life steadily.

The invention provides a non-contact-type rail vehicle obstacle detecting system. According to the work conditions of a vehicle running in different road conditions, sites and natural environments andthe characteristics of obstacles, output data of a plurality of testing sources such as a video shooting device, a laser radar device, an infrared testing device, an ultrasonic testing device and GPSare fused, advantage complementation of the multiple testing devices is achieved, detecting and pre-warning of the obstacles are completed, operation of the vehicle is controlled, safe operation of the rail vehicle is ensured, and detecting of the non-contact-type obstacles is achieved; the accuracy of detecting and pre-warning of the obstacles is improved, and mistaken alarming and alarming missing rates are decreased; and obstacle testing and pre-warning of the on-rail vehicle under all-weather and full-work-conditions are achieved.

The invention discloses a high-capacity high-stability lithium manganate positive electrode material. The high-capacity high-stability lithium manganate positive electrode material comprises modified lithium manganate Li(1+p)Mn(2-p-q)MpO4 and a clad material N, wherein a molar ratio of Li to Mn to M is 1-1.2 to 1.60-1.99 to 0.01-0.2; the total doping amount of the clad material is 0.01-20 weight percent relative to the lithium manganate. The stability of a crystal structure is improved through doping and cladding, the active substances are coated, complement of advantages between base lithium manganate and clad active material is realized, and the electrochemical performances, particularly cycle life and high-temperature performance, of the material are improved. The specific discharge capacity can be over 110mAh / g, the capacity retention rate is over 94 percent at the high temperature of 45 DEG C due to 100 cycles, the capacity retention rate is over 92 percent at the temperature of 60 DEG C, and the capacity retention rate is over 89 percent at the temperature of 70 DEG C.

The invention belongs to the technical field of navigation and positioning and discloses a low-orbit navigation constellation enhanced network RTK (real-time kinematic) technology. The low-orbit navigation constellation enhanced network RTK technology comprises the following steps: design of a global navigation and positioning constellation and multiple low-orbit constellation schemes, a low-orbitsatellite collecting orbit determination and inter-satellite link autonomous orbit determination method, design of a low-orbit satellite broadcast ephemeris and a high, medium and low-orbit satellitefusion processing unified mathematical model. The problem in the prior art that the network RTK method is low in positioning precision is solved, the baseline distance can be increased, the network density can be reduced, the cost can be reduced, the precision and the ambiguity fixing rate are increased, and the convergence time can be shortened. The sub-satellite point track coverage range of the low-orbit constellation is wide and even covers polar regions, the three-dimensional orbit errors of 60 and 192-star constellation are 46 cm and 18 cm correspondingly, the forecast precision is increased by about 30 percent compared with that of a klobuchar model, and the final positioning precision is at horizontal millimeter and height centimeter level.

The invention discloses a metal arc painting fast mould-producing robot which can produce the punching die of car cover elements fast and economically. The robot integrates the electric paint and electric brush plating, and it is made up of movement and craft parameter controller, electric arc paint device, electric brush plating device and mechanical body. The robot is five variances rectangular coordination structure, the allocation mechanism uses gantry structure and has three movement variances, which is used to adjust the space position of ejection gun or plating pole, wrist has two rotation variances for adjusting the space posture of election gun or plating pole. The wrist part is designed with two parallelogram structure, realizes the decoupling of rotation variances and movement variances, makes the adjustment of posture not affect the space position of the working place. The robot uses CAD model as input, and is driven by CAD data, neední»t to program manually.

The invention relates to an ultrasonic, vortex and EMAT integrated lossless thickness tester and a method thereof. The ultrasonic, vortex and EMAT integrated lossless thickness tester comprises an excitation module, a receiving pre-processing module, an analog switch, an A / D converter, a self-checking module, an MCU, a CPU module, a power supply module and a CPU periphery display storage part, wherein the excitation module is connected with the receiving pre-processing module, the receiving pre-processing module is connected with the analog switch, the analog switch is connected with the A / D converter, the A / D converter is connected with the MCU, the self-checking module is connected with the MCU, and the excitation module comprises an ultrasonic excitation module, a vortex excitation module and an EMAT excitation module; the receiving pre-processing module comprises an ultrasonic receiving pre-processing module, a vortex receiving pre-processing module and an EMAT receiving pre-processing module. The comparability of a measurement result is increased through the integration of the ultrasonic, the vertex and the EMAT, the misjudgment rate caused by measurement through a single method is reduced, and meanwhile the limitation of measurement through the single method is overcome.

The invention is a kind of variable structure leg and wheel type detecting robot, which uses variable parallelepiped car body, uses electric engine to drive the car body to be widened or be narrowed; the invention uses running mechanism of leg and wheel transition, the four legs can extended fully, becomes foot walking detecting robot, the four legs can be folded according to a definitive method, it is deformed into wheel detecting car. The invention combines the deformation of the car, the change of car height and the inversion of the leg and wheel, it has several change modes. The invention combines deformable and height adjustable car, foot walking mechanism, wheel running mechanism.

The invention relates to a preparation method of a lithium ion battery SnS2 / CNTs / PPy composite anode material. The preparation method comprises the following steps: Step One, adding SnCl4.5H2O and thioacetamide to a polyethylene glycol solution, and sufficiently and uniformly stirring; Step Two, adding a carbon nano tube to the solution, and carrying out ultrasonic dispersion for 60 min; Step Three, transferring the solution obtained in the step two into an automatic reaction kettle of polytetrafluoroethylene, and carrying out furnace cooling after insulation treatment; Step Four, carrying out centrifugal separation on the solution obtained in the step three, washing with deionized water and absolute ethyl alcohol, and carrying out vacuum drying; Step Five, dissolving an SnS2 / CNTs composite material obtained in the step four to the deionized water, uniformly stirring, adding lauryl sodium sulfate, adding pyrrole monomers and oxidizing agent, and stirring at room temperature for reaction for four hours; Step Six, carrying out centrifugal separation on the solution obtained in the step five, washing with deionized water and absolute ethyl alcohol, and carrying out vacuum drying. The anode material obtained by the preparation method is high in capacity and good in cycle performance, and has potential application prospects in the fields of portable electronic equipment, electric vehicles, aerospace and the like.

The invention non-contact rail vehicle obstacle detection system. According to working conditions of a vehicle during running under different road conditions, in different locations and in different natural environments and characteristics of obstacles, output data of a plurality of testing sources, such as a video camera device, a laser radar device, an infrared testing device, an ultrasonic testing device, a GPS and so on, are fused to realize complementary advantages of the plurality of testing devices so as to finish obstacle detection and pre-warning and control the running of the vehicle, guarantee the safety running of a rail vehicle and realize non-contact obstacle detection; and therefore, the obstacle detection and pre-warning accuracy is improved, the false alarm rate and missing alarm rate are reduced and all-weather and all-condition obstacle testing and warning of the rail vehicle are realized.

The invention relates to the field of micro energy, in particular to a composite type electric generator based on an electromagnetism and friction principle. The composite type electric generator comprises a shell, a top mass block, a top permanent magnet, a friction layer, a metal coil and a bottom permanent magnet, wherein the top mass block, the top permanent magnet, the friction layer, the metal coil and the bottom permanent magnet are arranged in the shell from top to bottom. The shell is of a cylinder shape, the top mass block, the top permanent magnet, the friction layer, the metal coil and the bottom permanent magnet are all cylindrical, and a film wraps the metal coil. The composite type electric generator has the advantages that the composite type electric generator replaces a traditional battery to supply power for a lower-power-consumption electronic component, mutual advantage compensation of an electromagnetic generator and a friction type generator is achieved, energy conversion efficiency of the generator is improved, reliability is high, the separating speed is high, the structure of the component is simplified, and large-scale production is facilitated.

The invention discloses multifunctional medical biological bone cement. The multifunctional medical biological bone cement is prepared from the following raw materials in percentage by mass: 5%-15% of polyacrylic acid microspheres, 20% of bioactive glass, 64.9%-74.9% of calcium phosphate bone cement and 0.1% of nanometer alendronate sodium microspheres, wherein the sum of the mass percentages of the raw materials is 100%. The multifunctional medical biological bone cement has the function of water absorption self-expansion; the using amount of the bone cement can be reduced, and further the leakage of the bone cement is reduced; the multifunctional medical biological bone cement has relatively good tissue compatibility, can be used for inducing the formation of new bones and enhancing the strength of vertebral bodies, is degradable in vivo without in vivo foreign matter residues; and meanwhile, the controlled-release alendronate sodium has the effects of resisting osteoporosis, reducing the absorption of bones and furthering enhancing the vertebral bodies. Therefore, the multifunctional medical biological bone cement has the advantages of little consumption, promotion of bone formation and bone absorption resistance when applied to vertebroplasty.