2924results about How to "Convenience guaranteed" patented technology

The invention discloses a large-scale container scheduling system and method based on a cloud platform. The system comprises a control node for receiving and analyzing a request sent from a client and then sending the analyzed request to the cloud platform; the cloud platform for managing the container and creating underlying resource used by the container, and providing the virtual resource of the underlying cloud platform for the container. The method comprises the following steps: acquiring a sending request of the client; forwarding the request by the container resource scheduling module; forwarding the request through an API gateway of the control node and creating a container cluster; forwarding the request through an application cluster API gateway; sending an instruction to a proxy through a scheduler; executing the instruction by the proxy; and constructing a container set through a container engine, and realizing the elastic telescopic through a transcript controller; creating a corresponding server and port; and dynamically adjusting in running. The system disclosed by the invention not only can manage the container, but also can automatically provide the virtual resource of the underlying cloud platform.

The invention discloses a quantum-key-distribution-network-based mobile encryption system and a communication method thereof. The method comprises that: a mobile terminal is registered in a network; the registered mobile terminal is connected with any quantum terminal by a key updating interface, and applies for the downloading of shared keys in a certain data volume to the quantum terminal; after the mobile terminal downloads the keys, the quantum terminal transmits a quantum centralized control station address to the mobile terminal for updating, and the mobile terminal takes a centralized control station on the quantum centralized control station address as a calling centralized control station; after the calling centralized control station is determined, the mobile terminal submits a cipher text to the calling centralized control station; the calling centralized control station re-encrypts the cipher text, and transmits the re-encrypted cipher text to a called centralized control station; the called centralized control station re-encrypts the cipher text, and transmits the re-encrypted cipher text to a called user; and after the called user decrypts the re-encrypted cipher text to obtain a plaintext, the communication is finished. In the method, the encryption does not require multiple matrix multiplication operations, so the computational load of the encryption is greatlyreduced; and simultaneously, the key distribution security of the highest level can be ensured in the key distribution of a quantum key distribution network.

The invention provides an automatic parking system and belongs to the technical field of automobile control. The automatic parking system comprises an ultrasonic radar detector, a camera probe, a parking controller and a driving control module, wherein the parking controller is used for receiving barrier distance data detected by the ultrasonic radar detector and image information collected by the camera probe, obtaining the parking space and planning and correcting the parking path in real time by combination with information of an automobile, and sending a control instruction to control the driving control module to perform steering, speed changing, braking and parking control over the automobile according to the parking path, so that the automobile is driven according to the parking path to be parked. The parking controller calculates the distance data and the image information, and the sensing capacity of the automatic parking system on the real environment is enhanced since the parking controller and the driving control module have complementary advantages; and meanwhile, the parking controller controls the driving control module to achieve an automatic parking function, a multi-sensor identification mode is adopted, robustness of the system is enhanced, and convenience and comfort are ensured when a driver uses the automatic parking system.

The invention relates to an enzyme-linked immune analysis method and a fully-automatic enzyme-linked immune analyzer. The analyzer comprises a rack component, a washing component, a sample adding / reagent adding component, a heating and temperature control component, a fluid path system, an input and output device, an optical measurement component and a control system, wherein the rack component comprises a rack soleplate; a pillar is arranged on the rack soleplate; a lower fixed plate and an upper fixed plate are arranged on the pillar from bottom to top in sequence; a circular reaction plate is arranged between the lower fixed plate and the upper fixed plate; the circular reaction plate is connected with the upper fixed plate and the lower fixed plate through a central shaft; a first motor is fixedly arranged at the lower part of the lower fixed plate; and the first motor is used for driving the circular reaction plate to rotate through a first transmission mechanism. When in use, the enzyme-linked immune analysis method and the fully-automatic enzyme-linked immune analyzer can carry out the detection of corresponding projects without wasting reagent through only one sample; and detection reagents need not to be respectively contained in different reagent bottles, so that the operation is very convenient, and the operation error is not easily caused, thereby ensuring the accuracy of the detection results.

The invention provides a panoramic fusion automatic parking system and method and belongs to the technical field of vehicle control. The system comprises an information acquisition module, a parking controller and a vehicle control module. The parking controller is used for receiving distance data and image information, obtaining a parking space in combination with own vehicle information, conducting redundancy recognition on the parking space, planning and correcting a parking route in real time and sending a control command to control the vehicle control module to travel according to the parking route so as to park a vehicle. The parking controller calculates the distance data and the image information, the advantages of the distance data and the image information complement each other,the sensory ability of the automatic parking system to the true environment is enhanced, meanwhile, the parking controller controls the vehicle control module to achieve an automatic parking function,a multi-sensor recognition mode is adopted, the robustness of the system is enhanced, and use convenience and comfort of a driver are guaranteed.

The invention belongs to the field of intelligent transportation, and provides an automatic driving lane change trajectory planning method based on quadratic form planning and a neural network. The method provided by the invention comprises the steps of: obtaining driving information of a lane change vehicle and surrounding vehicles by using an information sensing module; providing, by a lateral deviation recommendation module, a lateral deviation value based on the vehicle driving information so as to determine starting point and ending point position information of the lane change vehicle; calculating, by a path planning module, a static lane change path in a plane coordinate system of the lane change vehicle by using the vehicle driving information and the lateral deviation as input; and finally, providing, by a trajectory planning module, a time varying change law of the lane change vehicle and the surrounding vehicles to complete the target of lane change process planning. By adopting the automatic driving lane change trajectory planning method provided by the invention, under the premise of ensuring the safety of the lane change vehicle, the movement trajectories of the lanechange vehicle and the surrounding vehicles are comprehensively considered, and fast solution is achieved by using the quadratic form planning to improve the speed and comfort of the lane change process, thereby satisfying the requirements of automatic driving for the lane change sub-task optimization solution fastness.

The invention relates to a logistics express system, and provides a logistics express platform system. The logistics express platform system comprises a back-stage management server, a plurality of e-commerce distribution, receiving and dispatch express user terminal machines and a plurality of express company terminal machines or express company union terminal machines, wherein the back-stage management server is connected to the plurality of e-commerce distribution, receiving and dispatch express user terminal machines and the plurality of express company terminal machines or the express company union terminal machines through a wired network and a wireless network. The system can integrate logistics express services of a plurality of logistics express enterprises on one platform system according to different types to be displayed on the wired network or the wireless network for a user to select and use, so that the technicalization, standardization and normalization are realized; convenience and integrity in the using process for a user can be ensured; information management in the whole course of logistics express services can be realized; and a user can very conveniently and timely query and manage distributed orders to reduce delivery time for each express. Through online ordering, express information is accurate and waybill printing and querying are convenient.

The invention relates to a cloud service accessing gateway system and a cloud service accessing method. The cloud service accessing gateway system comprises a client side, a cloud service accessing gateway and a cloud resource server. The cloud service accessing gateway comprises three functional layers including a user interaction layer, a safety certification layer and a single sign-on layer. According to requirements on security and management of the cloud service accessing gateway system, frequent data transmission and synchronous information processing are performed among the cloud service accessing gateway, the client side and the cloud resource server, so that coordination action of cryptographic authentication and single sign-on is realized. The cloud service accessing method includes: a user of the client side logins in the cloud service accessing gateway system to get login authentication via conversation initializing units like request interaction, resolution, message audit and resource authorization; the user logins in the cloud service accessing gateway to request a cloud service; and the user logins in the cloud service accessing gateway for cloud service migration. Via forms of one-time registration, one-time login-in and multiple times of accessing, procedures for the user to use the cloud service are simplified, and great convenient conditions are provided to management of cloud resources.

The present invention relates to an encoding method and an decoding method for performing information storage by means of DNA. Different from a conventional computer magnetic medium, an information write-in mode of DNA storage is that after information is encoded, an oligonucleotide chain with a certain length is synthesized by utilizing an oligonucleotide chain synthesis technology and the synthesized oligonucleotide chain is stored in a powder form; and a reading technology of DNA storage is that the oligonucleotide chain is sequenced by utilizing a high-throughput sequencing technology and after being spliced, sequenced fragments are transcoded, so that an initial computer multimedia file can be restored. Due to the characteristics of the DNA oligonucleotide chain, in the design of an encoding mode, a random error possibly existing in the DNA synthesis and sequencing process can be taken into full consideration, and error authentication and multiple cover segment are performed on the DNA fragments. The encoding method for a DNA storage technology, which is constructed by the present invention, is simple, convenient and easy to operate and can be applied to transform the computer multimedia files in various formats into DNA sequences so as to perform information storage.

The invention provides a method and a system capable of achieving automatic pairing connection of Bluetooth earphones by speech recognition, wherein the method comprises that an inner memory module of a Bluetooth earphone stores a speech control command preset by users and Bluetooth terminal equipment information which has an established connection; the Bluetooth earphone receives external speech commands and sends the external speech commands to a speech recognition module inside the Bluetooth earphone for recognition; the speech recognition module performs matching and recognition for the received speech commands, and if speech commands are matched, corresponding Bluetooth terminal equipment information stored in the inner memory module is retuned to the Bluetooth earphone and an automatic paring request is sent to Bluetooth terminal equipment; and automatic pairing connection between the Bluetooth earphone and a Bluetooth terminal is established. The method and the system achieve the connection between the Bluetooth earphone and the Bluetooth terminal through the Bluetooth earphone, guarantee user usage convenience greatly, improve user satisfaction, and further improve market competitive force of Bluetooth earphones and Bluetooth terminal products.

The invention relates to a method for preparing black zirconia ceramics at the low temperature and belongs to the technical field of the preparation of high-temperature structural material. The method respectively uses a homogeneous precipitation method for synthesizing a nanometer coloring agent, and a coprecipitation method for synthesizing nanometer zirconia powder, and adopts Fe-Co-Ni-Mn as a coloring agent. The zirconia powder is not added with any sintering additive, only added with small amount of coloring agent and sintered at the temperature of 1150-1350 DEG C, thus obtaining the black zirconia ceramics with excellent performance and bright color. As the homogeneous precipitation method is adopted for synthesizing coloring agent powder, the monodisperse nanometer particles with uniform powder granules, narrow size distribution and high purity are obtained so that the coloring agent easily colors the particles. As the coprecipitation method is used for synthesizing zirconia powder, nanometer particles with small granularity, big superficial area and high activity are obtained, and can reduce the temperature of the solid-phase reaction, greatly reduce the sintering temperature and solve the problem that the black coloring agent oxide decomposes and volatiles at the high temperature. Simultaneously the method adopts the Fe-Co-Ni-Mn as the coloring agent, thus avoiding the poisonous function of Cr on the human body.

The invention discloses a real-time video abstract generation method based on user preferences. The method provided by the invention comprises the following steps: 1, calculating a color histogram and the joint difference value of pixel values; 2, judging whether the image features of two adjacent frames have obvious changes; 3, calculating a color histogram and the joint difference value of the pixel values; 4, obtaining the piecewise boundary of a potential video; 5, setting a key frame of a video frame sequence; 6, updating the key frame by using an optimal frame; and 7, establishing a Gaussian mixture model so as to obtain the key frame serving as a real-time video abstract result. According to the method disclosed by the invention, through establishing the Gaussian mixture model to learn the user preferences, and considering the different needs of different users on key frames, the update strategy is optimized, thereby improving the customer satisfaction.

The invention discloses a method for evaluating and optimizing radiotherapy dose based on a cone beam CT (Computer Tomography) image CT value correction technology. The method comprises the following steps of: a, collecting image information; b, making an initial radiotherapy plan; c, acquiring a CT value correction table; d, correcting a CT value of a cone beam CT image; e, drawing a target region and an outline; f, setting a current radiotherapy plan; g, judging whether rigid registration needs to be carried out or not; h, evaluating the current radiotherapy plan; j, carrying out local optimization by taking the current radiotherapy plan as the initial plan if the current radiotherapy plan needs to be optimized; k, off-line evaluating the radiotherapy plan; and l, judging whether the radiotherapy plan needs to be regenerated within a global range or not. According to the method disclosed by the invention, the accuracies of the dose calculation and the dose evaluation are ensured, and the fastness and convenience of the online optimization of the radiotherapy plan are also ensured; and the fastness and convenience of the online optimization are ensured by the local optimization, and the accuracy of the optimization is ensured by the global optimization, thus effective therapy on the target region is ensured, and the damage on normal tissues is avoided as much as possible.

The invention provides a depression risk screening system and method based on a virtual reality scene electroencephalogram signal. Under the stimulation of a virtual reality scene, real-time acquisition, processing and analysis of data are carried out on the electroencephalogram signal by an electroencephalogram acquisition system, and finally, a depression risk is screened by a data mining method. The system provided by the invention comprises a virtual reality induction system, a electroencephalogram signal acquisition system and a data analysis system; the virtual reality induction system is used for establishing different virtual reality scenes; the electroencephalogram signal acquisition system is used for acquiring the electroencephalogram signal of a human brain, which is generated under the stimulation of the virtual reality scene and is continuously changed, and outputting the processed electroencephalogram signal and extracted real-time feature information; the data analysis system has a classification discrimination model trained by labeled healthy populations and depression risk populations, compares feature information required in a depression screening process with feature parameters of the classification discrimination model, and distinguishes and discriminates the healthy populations and the depression risk populations.

The invention provides a shooting method, which is applied to a terminal. The shooting method comprises the following steps: starting a camera to acquire an image, and displaying the acquired preview image, wherein the camera comprises at least two optical lenses which are not synchronously positioned in an image acquisition light path; receiving a focal length switching command; moving a first lens which is positioned in the image acquisition light path in the at least two optical lenses out of the image acquisition light path according to the focal length switching command, and moving a second lens which is not positioned in the image acquisition light path in the two optical lenses into the image acquisition light path; performing transition processing on the preview image through digital zooming in a focal length switching period; and outputting a shooting command after the completion of focal length switching, and performing shooting operation through the second lens.

The invention provides a propagation environment adjustable and controllable method and device, electronic equipment and a computer readable storage medium, and relates to the technical field of wireless communication. The method comprises the following steps: 1, an RIS is deployed between a multi-antenna base station and a user terminal; the signals emitted by the base station are reflected to the user; specifically, the multi-antenna base station forms a matrix according to a preset digital beam, digital beam forming processing is carried out on the emission signal; a transmitting signal pointing to the RIS is obtained; the RIS carries out analog beam forming processing on the incident signal according to a preset phase; the incident signals are reflected to a plurality of single-antennauser terminals; according to the method disclosed in the embodiment of the invention, the RIS is deployed between the base station and the user; the RIS is used for reflecting the signals sent by thebase station to the user, the propagation environment of the base station signals is changed, the signals generated by the base station can avoid obstacles for transmission, and the propagation environment of the signals is remodeled to be in an ideal state; the problems of signal fading, obstacle shielding and the like are effectively solved; data transmission rates are increased.

The invention relates to a minitype portable type intelligent mobile robot system with multiple degrees of freedom used for treating small explosives. The system comprises a mechanical movement part and an electric control part and is characterized in that the robot system comprises a control unit module, a moving platform module, an energy source module, a mechanical arm module, a picture sensor module and a remote control module; wherein, each independent functional module is mutually connected by adopting a standard mechanical interface; an embedded type computer APM 7 as a main controller is adopted among all the CPU and the Ethernet or CAN bus as a master controller is adopted and each CPU is connected by Ethernet or a CAN bus; all central processing units adopt standard TCP / IP or protocol communication and the body and arm of the robot are respectively provided with a camera. The robot system is light in weight and convenient in carrying; the robot is provided with 12 degrees of freedom and can be run autonomously and can be carried out by remote video control by adopting the mechanical arm which can remove explosive substance with 8 degrees of freedom; the robot system can be run in all weathers and in all terrain and can be applied to the field of actual combat.

The invention belongs to the technical field of concrete and in particular relates to a super-light aggregate concrete for long-distance homogeneous pumping construction, a preparation method thereof and a pumping construction process. The super-light aggregate concrete for the long-distance homogeneous pumping construction is characterized by being prepared from water, a gel material, a fine aggregate, a coarse aggregate and an additive, wherein the gel material consists of cement and fly ash; the coarse aggregate is super-light ceramic particles; the fine aggregate is ceramic sand; the additive is a pumping agent and a water reducing agent; each cubic meter of concrete comprises 180 to 250kg of water, 160 to 250kg of cement, 250 to 320kg of fly ash, 350 to 450kg of super to light ceramic particle, 300 to 400kg of ceramic sand, 3.5 to 4.5kg of water reducing agent and 0.35 to 0.45kg of pumping agent. In a pumping process, the super-light aggregate concrete prepared by the method has relatively good working performance and homogeneity. The problems of easy blockage of a pump, high slump loss, layered concrete and the like in the pumping construction process of the super-light aggregate concrete are solved.

The invention relates to a concrete admixture, in particular to a composite cement preservative which can enhance the salty ion erosion resistance, freezing-thawing cyclic damage resistance and penetration resistance of concrete. The concrete preservative disclosed by the invention comprises the following components in percentage by weight: 30.0-50.0 percent of mineral admixture, 30.0-50.0 percent of expanding agent, 5.0-10.0 percent of corrosion inhibitor, 0.001-0.005 percent of air entraining agent and 1.0-10.0 percent of water reducing agent. By adopting the concrete preservative disclosed by the invention, the compactness of concrete can be enhanced, the concentration of sulfate ions capable of invading concrete can be lowered, the pore diameters of capillary pores can be reduced and the precipitating speed of calcium hydroxide from set cement can be restrained, so that the structural durability of concrete is enhanced. The concrete preservative is suitable for reinforced concrete structures in unfavorable geological regions, such as coal measure strata containing sulfate and magnesium and chloride ions, sulfide ore strata, seashore saline fields, coastal harbors and the like, as well as marine waters.

The invention discloses a pyroxylin lacquer with low smell, wherein the pyroxylin lacquer has no benzene hydrocarbon, and the lacquer formula includes 10 percent-25 percent by weight of at least one resin, 25 percent-55 percent by weight of at least one of alcohol ether solvent, ester solvent or alcoholic solvent, , 20 percent-50 percent by weight of at least one curing agent, plasticizer and additive, the pyroxylin lacquer of the invention uses non-benzene solvent, and ensure the superiority of pyroxylin lacquer per se, so as to effectively avoid environmental pollution produced in production, construction and using process of the benzene hydrocarbon, and health hazard to production operator and constructer.

The invention relates to the field of personal mobility technology and vehicle-mounted Bluetooth technology and discloses a Bluetooth voice control method and device and an intelligent terminal. The method comprises the steps of conducting Bluetooth matching and connection with a peripheral, sending a request signal to the peripheral, attempting connection with an RFCOMM channel set by the peripheral, receiving an RFCOMM channel establishment confirmation signal returned by the peripheral, establishing a Socket port based on an RFCOMM, receiving a VTCP data packet transmitted from the peripheral through the Socket port, recognizing a voice instruction in the data packet and converting the voice instruction into a specific control instruction for operation of the intelligent terminal. According to the Bluetooth voice control method, device and intelligent terminal, a VTCP is adopted to transmit 16-KHz voice signals through the RFCOMM channel, so that the voice recognition rate is effectively increased; furthermore, efficient and accurate voice control over the intelligent terminal is achieved, and safety and convenience in the process of controlling the intelligent terminal by a user are guaranteed to the maximum extent.

The invention discloses a novel high-precision data acquisition system for electrical impedance imaging. The system is constructed by a main control module, a programmable current source, an electrode interface module, a voltage measurement module, a current detection module, a digital demodulation module, a communication interface module and the like. Excitation currents in an imaging target region are accurately controlled through the current detection module and the programmable current source, distribution differences are effectively suppressed through an electrode selection switch system in the electrode interface module, external disturbance is effectively blocked through an electrode wire double-shielding system in the electrode interface module, and related demodulation of response signals and excitation signals is achieved through the digital demodulation module. By the adoption of the high-precision data acquisition system, the influence of distribution parameters and external disturbance in the data acquisition system for electrical impedance imaging can be effectively suppressed, nonlinear errors of a measurement result are reduced, the signal to noise ratio of measured data is increased, the key problem that in the electrical impedance imaging research, data acquisition accuracy is difficultly further improved is solved, and the high-precision data acquisition system has important application value.

The invention provides a power grid dynamic observing method based on PMU (power management unit) data. On the basis of PMU point distribution optimizing and in combination with the network topology information after EMS / SCADA (energy management system / supervisory control and data acquisition) state estimation, dynamic observation of the whole power grid can be achieved, and complete, reliable and real-time information is provided for a power grid advanced application analyzing function. In combination with C / S and B / S architectures, the dynamic monitoring and analyzing results are visually displayed to a dispatcher in a two-dimensional or three-dimensional manner to assist decision making. The method has the advantages that a power grid modal analysis method is combined, the coupling relation of active power and voltage phase angle is considered, the minimal dominating set algorithm is used, and the realized PMU point distribution method can actually and accurately reflect the stable weak areas of the current power grid; the EMS / SCADA data after state estimation is analyzed and correlated with PMU configuration data in a mapping manner to form mixed data, and reliable and accurate data source is provided for subsequent analysis.

The invention discloses a routing method in a wireless sensor network, the wireless sensor network and node equipment based on the method. The routing method comprises the following steps: each node selects the nodes closer to the gateway than self from own neighbor nodes to form a candidate forward set; the node computes the payment equation value corresponding to each node in own candidate forward set; the neighbor node maximizing the payment equation value is selected as the next hop node; and after all the involved nodes select strategies, the route is established and data transmission is started. Based on the balance mechanism in the game theory, the invention can jointly optimize transmission reliability, network energy consumption and lifetime in the routing process and farthest save network energy consumption.

The invention relates to an information aggregation and interaction method and a service system. The method comprises the following steps: user information is stored in the service system used for information aggregation and interaction; and the service system searches users with user information matched with second information after receiving the second information submitted by a user and then sends at least partial second information to the matched users; furthermore, the users submitting to the second information can be inviters of an activity, and the submitted second information can be activity information. The corresponding service system comprises a data storage module, a searching module, a user interface module, an information management module and a control module. The invention can improve the validity of information aggregation and interaction.

The invention discloses a method for safely operating a file upon a fingerprint identification sensor. The method is applied to an intelligent mobile terminal configured with the fingerprint identification sensor, and comprises the following steps: S1, starting the fingerprint identification sensor after to-be-operated target information is selected; S2, capturing first fingerprint image data, and recording the capture time and the capture position; S3, capturing second fingerprint image data, and recording the capture time and the capture position; S4, judging and comparing the first fingerprint image data, the second fingerprint image data and user preset fingerprint image data; S5, judging a gesture glide direction according to the first fingerprint capture position and the second fingerprint capture position; S6, calling a gesture and information operation mapping relation table, looking up a corresponding target information operating mode, and operating the target information. According to the method disclosed by the invention, gesture glide is identified by utilizing the fingerprint identification sensor; meanwhile, by combining fingerprint verification, not only is the encryption function of the related special operation of the important information file realized but also the convenience of the related special operation of the important information file is guaranteed.

The invention provides an identity construction and signature method for replacing a U shield, and the method comprises the steps: generating an account activation code according to a user identity construction request and storing the user identity information; distributing private keys according to the user identity information and the account activation code sent by the user electronic device, storing the identity information of the user electronic device, and binding the user identity information, the identity information of a user electronic device and the private keys; comparing the useridentity information and the identity information of the user electronic device with the user identity information and the identity information of the user electronic device which are stored already,authorizing the user electronic device to perform the signature operation if the information is consistent; receiving signature data sent by the user electronic device and is generated by signing withthe private key thereof, and verifying the signature data by using a public key. The method binds the user identity information, the identity information of the user electronic device and the privatekey, and the private key is stored in the electronic device. The U shield function is implemented by the electronic device, and the U shield is not required to be distributed, thereby saving the costand simplifying the business process.

The embodiment of the invention discloses an identity recognition method and device and related equipment, and the method comprises the steps: obtaining target behavior state information when receiving input identity verification information based on a target user, wherein the target behavior state information is behavior state information generated according to an operation behavior of inputtingthe identity verification information by a target user; obtaining an identity authentication model corresponding to the registered user, wherein the identity authentication model is obtained by training according to behavior state information of an input operation behavior of a registered user; identifying an identity matching relationship between the target user and the registered user in the identity authentication model according to the target behavior state information; and identifying the security type of the target user according to the identity matching relationship and the input identity verification information. According to the invention, the reliability of system security authentication can be improved.

The invention relates to a high strength chitosan complex fiber which has a mold resistance and is applicable to medical treatment and clothing textile fabric, and a preparing method thereof. The chitosan complex fiber obtained according to the technical scheme has a much higher overall performance than the products obtained through the prior art, has a good spinning property and good stitchability, and can be further prepared into fabrics through a knitting machine or a weaving machine as well as non-woven fabrics through a nonwoven equipment. The adopted oxidized graphene in itself has a good antibiosis effect, and compared with a graphene material, the oxidized graphene has the advantages of being easy to prepare, high in performance, low in cost, good in water dispersibility, good in adsorptive property, capable of easily conducting various kinds of functional modification and the like. Dosage adjustment and chemical modification can maintain superiority of the graphene and at the same time prevent the graphene from inducing biotoxicity so that the research and application of the graphene in the field of biomedical engineering can be broadened. The preparing method of the high strength chitosan complex fiber has the advantages of being simple in producing technology, low in preparing cost; meanwhile, the obtained high strength chitosan complex fiber has a stable performance. Therefore, the preparing method is very suitable for popularization and market expanding of the chitosan fiber and graphene industries.