31results about How to "Ensure safe execution" patented technology

The invention provides a safe communication method and device. The method comprises steps of performing basic information authentication, external authentication and secondary authentication on a security chip and a trusted application, so as to establish a connection between the security chip and the trusted application; performing basic information authentication, external authentication and secondary authentication on the trusted application and a user application, so as to establish a connection between the trusted application and the user application; and establishing a logic connection between the security chip and the user application. A safe channel is established before business communication, and all data communicated in the safe channel is encrypted and transmitted, so that the data in the link is not transparent any longer. The method can effectively prevent interception, guarantees the business to be executed safely, needs no external equipment, and increases user experience.

The invention discloses a block level encryption method in cloud storage and a multi-granularity deduplication method, belonging to the technical field of network security. The block level encryption method comprises the steps that a system public parameter is set, a user end calculates a key and encryptes a file, and metadata is calculated; and the user end selects a part of metadata as a deduplication request and sends the request to a server, the server verifies the file ownership of a user according to the request and retrieves a file in a storage list, if the file exists, access is provided directly, otherwise the server asks the user end to upload non-repeat information, the server carries out consistency verification on received data, and the server allows the user end to access the file if the verification is passed. The method is suitable for the cloud storage with security and efficiency of data and aims to safely and reliably carry out deduplication on the user data, and the data storage efficiency is high.

The invention relates to an indoor wall-buried wire non-destructive detection instrument which comprises a sensor module (1), a multistage amplifying circuit module (2), a singlechip module (3) and a display module (4), wherein the output terminal of the sensor module (1) is connected with the input terminal of the multistage amplifying circuit module (2), the output terminal of the multistage amplifying circuit module (2) is connected with the input terminal of the singlechip module (3), and the output terminal of the singlechip module (3) is connected with the display module (4). The indoor wall-buried wire non-destructive detection instrument adopts a non-destructive detection technology, does not destruct a wall surface, has low cost, high sensitivity, remarkable strength variance when closing to a live wire, accurate positioning, small error between an indicative position and a practical wire position in a range from -0.5cm to 0.5cm, easiness and simplicity, maneuverability without any professional knowledge, simple structure, firmness, durability, safety, reliability, no ray release, no ultrasonic wave release, and the like and does not need to mount an instrument on the wire, thereby being convenient and practical.

The invention provides an internet-based communication method and an internet-based communication terminal and aims to solve the problems of forward time delay and complexity in communication process. The method comprises the following steps of: generating a first number which is used for uniquely identifying each terminal for the terminal, and generating a second number which is used for communicating the terminal with other terminals; acquiring an address book by two communicating terminals from each other, and storing the address book which contains opposite information; searching a network link address and a port number, which are matched with the second number of a called terminal in the address book by a calling terminal, and calling the called terminal through the network link address and the port number, which are searched; after the called terminal is called, connecting the called terminal and the calling terminal according to the network link address and the port number of the calling terminal; and communicating the calling terminal and the called terminal. Third-party equipment is not required to participate in the communication process, and the communication process is self-completed by the terminals, so the forward time delay is avoided, and the communication process is simplified.

The invention relates to an automatic driving lane changing track optimization model, an automatic driving lane changing track optimization method and an automatic driving lane changing track optimization system. According to the actual space size of the current lane change, the actual situation of information processing time delay of the automatic driving vehicle is considered meanwhile, the transverse direction and the longitudinal direction of lane changing execution are combined for configuring a complete lane changing track optimization model in a lane changing execution process. Throughthe lane changing trajectory optimization model, the self-adjustment and trajectory optimization capabilities of the automatic driving vehicle are improved; real-time feedback optimization control iscarried out on the whole lane changing process; safe execution of lane changing is ensured; when the model is constructed, the operation characteristics of lane changing in an actual and changeable traffic environment are combined; therefore, it can be ensured that the operation parameters generated by the automatic driving lane changing trajectory optimization model are accurately attached to thelane changing execution traffic scene where the automatic driving vehicle is actually located, the defects that the difference between the constructed model and the actual traffic scene is large andthe constructed model cannot be directly used are thoroughly overcome, and the adaptability is high.

The invention discloses a method and system for extending high-performance encryption and decryption computing capability. The method comprises the following steps: a main processor transmits data tobe encrypted and decrypted and program calls of encryption and decryption operations to an FPGA main controller through system communication; the FPGA master resolves the program calls from the main processor and decomposes them into a series of sub-processes. The FPGA master sends the corresponding command call and related data to the security chip. The security chip generates the secondary key required for the current encryption and decryption operation according to the root key stored in the FPGA master and the input data from the FPGA master, and feeds the operation result back to the FPGAmaster. According to the secondary key fed back by the security chip, the FPGA master calls the high-performance encryption and decryption circuit to complete the corresponding encryption and decryption operation, and sends the final operation result to the main processor. The invention adds a high-performance encryption and decryption circuit into the FPGA main controller to ensure the safe execution of the high-performance encryption and decryption operation.

The invention discloses a microwave ablation needle provided with a water cooling sleeve tube and applied under a bronchofiberscope. The microwave ablation needle comprises a handle, a sheathing canal, a guide wire and a control mechanism. The handle is provided with a water injecting guide tube and a water drain guide tube. The guide wire comprises a cable, an ablation electrode, a water coolingguide tube, a sealing part, a syringe needle and an inner sleeve. A backflow opening is formed in the front end of the water cooling guide tube, a water injecting cavity and a water drain cavity are formed in an inner cavity, and the ablation electrode and the syringe needle are arranged at the front end of the cable. The microwave ablation needle provided with the water cooling sleeve tube and applied under the bronchofiberscope can achieve needle insertion and ablation at a controllable distance in a channel of the bronchofiberscope. The microwave ablation needle has excellent water coolingcirculating design, the sealing property and supporting performance in the microwave ablation needle are considered from multiple aspects, and it is guaranteed that microwave treatment emitting high heat can be safely executed in the body of a patient.

The invention provides a distributed power supply comprehensive analysis and security management and control system. A distributed power supply data processing module is used for acquiring distributed power supply information; the distributed power supply equipment management module is used for providing a distributed power supply equipment adding, deleting, modifying and checking interface for a user; the distributed power supply equipment query statistics module is used for configuring an equipment tree query interface, an equipment account attribute query interface and a graphic query interface; the distributed power supply maintenance management module is used for providing a management interface for compiling annual, monthly and weekly maintenance plans, displaying the maintenance plans by using a Gantt chart, and providing a maintenance plan time adjustment operation interface; pre-balancing, repeated power failure analysis, risk analysis and safety early warning functions can be performed; the distributed power supply data analysis display module is used for displaying system operation information; the system realizes the functions of safety early warning and reminding of maintenance work including the distributed power supply, power supply analysis of the distributed power supply, safety management and control and the like, and guarantees the personal safety of maintenance personnel.

The invention discloses a distributed photovoltaic power generation power grid-connected system and method based on trusted computing. The system comprises distributed photovoltaic power generation equipment, distributed photovoltaic power generation edge computing nodes and a power dispatching cloud center, wherein the distributed photovoltaic power generation equipment comprises a power generation device and a grid connection device; the distributed photovoltaic power generation edge computing nodes comprise a hardware system and a software system, the hardware system comprises hardware supporting trusted computing, FPGA hardware and data network transmission hardware, and the software system is constructed based on a container technology; the power dispatching cloud center is constructed based on cloud infrastructure; and the distributed photovoltaic power generation edge computing nodes perform data transmission with the distributed photovoltaic power generation equipment and the power dispatching cloud center through a first transmission channel and a second transmission channel respectively. By arranging the edge computing node, safe and reliable data exchange can be ensured, and the photovoltaic power generation equipment is controlled to timely and accurately respond to an instruction of the power dispatching cloud center to perform operations such as grid connection, power generation output increase and decrease and cut-out.

The invention discloses a method and a system for planning a lunar surface inspection and detection task, and relates to the field of lunar surface detection. The method comprises the following steps: calculating a path according to a path starting point and a path ending point of a navigation point in an input lunar surface patrol detection task, setting a plurality of path state parameters in the path, and controlling a patrol device for executing the lunar surface patrol detection task, according to the method, actions of partial or all path state parameters are executed in sequence according to a preset sequence under a preset constraint condition, a detection task is finished after the actions are executed, and when a specific planning problem is described, lunar surface patrol task planning can be realized only by appointing a detection point without determining an action sequence in an intermediate process, so that the method is simple and convenient. The method has good flexibility and practicability, can cope with a terrain environment with complex constraint, can gradually perceive the surrounding environment in the detection process, and selects a detection target and an inspection route.

The invention relates to a power-frequency feeble-current electromagnetic signal sensor of a non-current transformer type, comprising a bottom liner (11) and at least two sensors (12) mounted on the bottom liner (11). Axial geometric axes of the sensor modules (12) are mutually staggered, and either sensor (12) comprises a magnetic core (121) and a lacquered wire (122) which is wound outside the magnetic core (121) and used for inducing a magnetic field and generating electromotive force; one end of either lacquered wire (122) of either sensor (12) is connected with the input end of a multistage amplifying circuit module (2), and the other end of one lacquered wire (122) of one sensor (12) and the other end of the other lacquered wire (122) of the other sensor (12) are mutually connected together to form a sensor pair. The power-frequency feeble-current electromagnetic signal sensor of non-current transformer type adopts a non-destructive detection technology, does not destruct a wall surface, has low cost, high sensitivity, remarkable strength variance when closing to a live wire, accurate positioning, small error between an indicative position and a practical wire position in a range from -0.5cm to 0.5cm, easiness and simplicity, maneuverability without any professional knowledge, simple structure, firmness, durability, safety, reliability, no ray release, no ultrasonic wave release, and the like and does not need to mount an instrument on the wire, thereby being convenient and practical.

The embodiment of the invention provides a resource processing method and system based on a block chain, the resource processing method based on the block chain is applied to the resource processing system, the system comprises a first decision module, a second decision module and a task storage module of a resource processing party, under the condition that a resource transfer task sent by an off-chain resource provider is received, the current state information of the off-chain resource provider and an on-chain resource receiver is determined, and under the condition that the current state information is determined to meet a preset task interruption condition, the resource transfer task is stored in a task storage module; the task storage module sends the resource transfer task to the second decision module based on a preset task sending rule; and the second decision module responds to the current state information of the under-chain resource provider and the on-chain resource receiver of the resource transfer task, and executes the resource transfer task under the condition that the current state information determines that a preset task execution condition is met.

The invention provides a hybrid cloud security scheduling method, which comprises the following steps of: when request information of a task sent by a user is obtained, judging whether to distribute the task to a target private cloud server or a target public cloud virtual machine based on the request information of the task; when it is determined that the task is allocated to the target public cloud virtual machine, performing identity verification on the task executed by the target public cloud virtual machine; after the identity verification of the task is passed, performing encryption processing on input data requested by the task, and transmitting the encrypted data to the task; and receiving the output data transmitted by the task, performing integrity verification on the output datatransmitted by the task, and feeding back the output data to the user when the integrity verification is passed. Through the technical scheme of the invention, on the premise of meeting the task execution security, the use efficiency of the hybrid cloud resources can be optimized.

The invention relates to a spacecraft proximity operation autonomous control method and system based on online learning. In order to solve practical engineering problems of sight field constraint, proximity corridor constraint, real-time online optimization of control performance and the like of a spacecraft in a proximity operation task, the invention provides a proximity operation autonomous control technology method based on online learning. The method comprises the following steps: firstly, establishing a pose integrated kinetic model of a spacecraft based on dual quaternions, and describing pose motion constraints into an inequality form by utilizing the dual quaternions; secondly, designing a return function of online learning control based on the property of the dual quaternion fortask requirements of spacecraft approaching operation autonomous control; and finally, under a dual quaternion framework, designing an online learning method is designed to enable the controller to begradually improved from a simple control strategy to a suboptimal controller by utilizing online data. The task execution capability of the spacecraft is improved.