4421results about How to "Fix security issues" patented technology

Wireless vehicle charger safety systems and methods use a detection subsystem, a notification subsystem and a management subsystem. The detection subsystem identifies a safety condition. The notification subsystem provides an indication of the safety condition. The management subsystem addresses the safety condition. In particular, undesirable thermal conditions caused by foreign objects between a source resonator and a vehicle resonator are addressed by sensing high temperatures, providing a warning and powering down a vehicle charger, as appropriate for the environment in which the charger is deployed.

A method, a system and an authentication server for realizing a secure assignment of a DHCP address are disclosed. The method includes: sending a DHCP Discovery message via an access network; obtaining the identification information of the DHCP client and performing an authenticating to the DHCP client based on the identification information; and only assigning the address to the DHCP client has passed the authentication. Therefore, in the present invention, access authentication may be performed on a subscriber according to location information, and IP address is only assigned to the valid subscriber and terminal. Therefore, the security of the address assignment in DHCP mode may be enhanced greatly. Moreover, in the present invention, addresses may be managed by an AAA server unitedly, or the addresses may be assigned after being authenticated by the AAA server successfully.

The invention relates to an optimal damping control algorithm of a continuous-control-type semi-active suspension system, and the optimal damping control algorithm is researched and developed for meeting the taking comfort of people and automobile driving safety requirements well. The control algorithm comprises the following steps of: measuring automobile body vibration acceleration signals, automobile speed signals and rotation angle signals by utilizing a sensor; sensing the automobile driving road condition and suspension system damping ratio according to the signals measured by the sensor; according to the measured automobile body and automobile wheel vibration acceleration, obtaining the automobile body and automobile wheel vertical motion speed and the relative motion speed between an automobile body and automobile wheels; determining the optimal damping coefficient and the damping force of a shock absorber required under the current automobile speed and road condition according to automobile parameters, outputting stepping motor rotation angle control signals through a controller, and controlling and regulating the area of the damping throttling hole of a controllable shock absorber, so that the semi-active suspension system achieves the required optimal damping and damping force. The semi-active suspension optimal damping control algorithm provided by the invention is simple and easy to implement, has low requirements for the dynamic property of an actuating element, and is beneficial to the applications and popularization of the semi-active suspension.

The invention discloses a method and a system for internet of things information transmission. Firstly, a public key infrastructure/certificate authority (PKI/CA) mechanism is established in the internet of things and an authentication key and an encryption key are distributed to an aggregation node of the internet of things; transmitted information is encrypted and authorized in an edge network of the internet of things; and key conversion is conducted after the encrypted and authorized information reaches the aggregation node of the internet of things and the information encrypted again is sent to an application management server of the internet of things. According to the method and the system for the internet of things information transmission, the internet of things can effectively resist interior attack, information safety transmission level is improved and complexity of encryption and safety authentication calculation in the edge network of the internet of things is reduced.

The invention discloses a network security situation perception system and a method based on multilevel multi-angle analysis, wherein the system comprises a data gathering module, a network security situation understanding module, a network security situation estimation module and a network security situation forecasting module. The method for achieving the network security situation perception system comprises the following steps: firstly, doing statistical data fusion and association analysis to data in the aspects of assets, intimidation and vulnerability of a network system gathered by a sensor, and getting normalized data, secondly, analyzing the normalized data after the fusion of the step one, and doing network security situation special subject estimation, thirdly, doing network security situation factor estimation according to the normalized data obtained in the step one and the estimation result of the step two, fourthly, doing the integral estimation of network security situation according to the estimation result of the step three, fifthly, doing network security situation forecast according to the estimation result of the step D. The invention analyzes the security situation of network from multi levels and multi angles, and guarantees a result perception system to be more accurate and comprehensive.

The invention relates to a nuclear power plant working robot and a control system thereof, which belong to the fields of robots and automation equipment. The nuclear power plant working robot is a crawler-type mobile manipulator and is composed of a mobile platform driven by double crawlers and a four freedom degree manipulator carried on the mobile platform. The nuclear power plant working robot can move inside a nuclear power plant, has two control modes of manual remote control and autonomous control, and is remotely controlled by a wireless or wired mode. The control system of the nuclear power plant working robot includes a host monitoring and planning control system and a robot control system which are matched to control the operation of the robot. The robot operates autonomously, is safe and reliable, can complete certain dangerous tasks in high radioactivity environment; the robot has small size, stable performance, great maneuverability and low operation cost; a crawler-type chassis has strong gripping force as well as certain climbing and obstacle clearing ability, and is suitable to walking over complex terrains; and the robot has high intelligence degree and can realize autonomous control and manual remote control.

The invention relates to a blockchain technology-base agricultural product traceability method. According to the method, a block chain technology is applied to the database layer and communication layer of a system; agricultural products are coded through a global unified identification system; a data entry process uses digital signatures and smart contracts, so that it can be ensured that data are not tampered; all the data are stored in a blockchain and can be accessed by authorized nodes; and the right of data access depends on the roles and functions of participants in a supply chain. Withthe method adopted, problems such as non-standard information collection, insecure data storage, the vulnerability of a central system to attacks and failure to ensuring privacies in the process of information exchange between enterprises of a traditional agricultural product traceability system can be solved.

The invention relates to a spinel nickel manganese acid lithium and layered lithium-rich manganese-based composite cathode material with a core-shell structure and a preparation method thereof, which belongs to the technical field of material synthesis. The prepared lithium ion composite cathode material takes a layered lithium-rich manganese-based Li[Lia(NixCoyMnz)]O2 as a core material, takes spinel nickel manganese acid lithium LiNi0.5Mn1.5O4 as a shell material; a coprecipitation method is employed to obtain a core-shell precursor, the core-shell precursor and the lithium source are uniformly mixed and calcined to obtain the spinel nickel manganese acid lithium and layered lithium-rich manganese-based composite cathode material with the core-shell structure. According to the invention, the layered lithium-rich manganese-based is taken as the core material, and the spinel nickel manganese acid lithium is taken as the shell material; under the prerequisite that material gram capacity is kept, material structural stability is increased, material cycle, multiplying power and safety performances are improved, function composite and complementation of the core material and the shell layer material can be realized, and the problem that high capacity and high security can not be achieved simultaneously is solved. The composite cathode material has the advantages of simple process and obviously increased performance.

The invention discloses a digital signature method, a digital signature system and a quantum key card. The digital signature system comprises quantum network service stations, signature client sides, authentication client sides and quantum key cards, wherein the quantum network service stations are configured on the network side, and the signature client sides and the authentication client sides are configured on the user side. The digital signature method includes that a true random number is generated on the network side and then stored in the corresponding quantum key card and on the network side respectively to form a corresponding user-side key; the quantum key card matching with the signature client side uses the stored user-side key to generate a signature file, the signature file is sent to the authentication client side via the signature client side, and the authentication client side sends the received signature file to the current quantum network service station, acquires the corresponding user-side key from the network side to perform signature authentication on the signature file and sends signature authentication results to the corresponding authentication client side. The digital signature method, the digital signature system and the quantum key card have the advantage that key seeds are stored in the quantum key cards and the quantum network service stations, so that the problems of access use and safety of quantum network terminals are solved.

The present invention provides a vehicle with redundant systems to increase the overall safety of the vehicle. In other aspects, the present invention provides a method for learning control of non-linear motion systems through combined learning of state value and action-value functions.

The relation-type data base system of the present invention includes data center for storing data object; metadata base for storing metadata; client sides; report server connected to the client sides; and intermediate server connected to the data center, the metadata base and the report server. The inquiry and report process includes the client side to input inquiry and report request, the report server to send metadata inquiry request, for the intermediate server to obtain metadata from the metadata base, for the report server to send metadata to the client side, for the client to input inquiring and report condition based on the metadata, for the report server to create command, for the intermediate server to execute the command in the data center and to return result to the report server, for the report server to store the result and return it to the client side, and for the client to show the result.

A database engine facing multiple tenancies and data accessing method thereof are provided. The method of the invention includes: receiving a data access request of tenancy; determining the tenancy entity corresponding to the tenancy, wherein multiple tenancy entities share one logic table in the database; processing the data access request of the tenancy according to the configuration information of the tenancy entity. The invention introduces the concept of tenancy entity to the database: a plurality of tenancy entities shares one logic table such that the development and management costs are reduced; meanwhile, every tenancy entity has independent database access account number such that the security problem of the database access is solved; when the tenancy request comes, the data access request of the tenancy is processed according to the authority of the account number of the tenancy. Due to the introduced concept of the tenancy entity in the invention, the data of the tenancy is physically separated from each other and thus it is possible to improve performance, excellent isolation and expandability; and it is possible to realize the service quality management for the tenancy at the same time.

The invention relates to an intelligent container or the analogs thereof, which is technologically characterized in that the invention consists of two parts of the installation power and an intelligent terminal with an entrance guard and an electronic lock (an intelligent lock) which is built-in arranged in an antenna integration; by combining with a lifting device, the invention is provided with an intelligent container with a function of lifting self-loading and unloading or the analogs. By integrated application of the technology such as the intelligent terminal combining with satellite positioning, the wireless communication, the RFID radio frequency identification, the network and the computer calculation, the real-time performance, the controllability and the security of freight transportation in the container can be solved and extend to a client as a temporary warehouse, which saves the automobile resources and waiting time and realizes the freight path information management which is a highest level of logistics business that anyone loads or unloads the freight anywhere and at anytime, the freight is in any location and in any status, the recording and monitoring of the freight environmental status in transporting the freight and the freight information and flow business can be inquired, traded and stowage planned on the network.

The invention relates to a 3D-coordinated power grid energy management system and a power grid evaluation and control method, which belongs to the field of scheduling automation of power system. The system comprises a power grid model reconstruction sub-system, a power grid safety evaluation and alarm sub-system, an active frequency optimization control sub-system and a passive voltage optimization control sub-system, and a background calculation sub-system and a system foreground. The method comprises following steps: tracking isoline of an external power grid and automatically reconstructing a global power grid model; automatically executing online safety analysis integrated with static power grid, dynamic power grid, voltage stabilization, coordination of relay protection setting values, etc., and online recognizing the safety state of the power grid; alarming for normal unsafe condition, and carrying out prevention control; alarming for emergent conditions, and carrying out correction control calculation; and carrying out realtime active scheduling closed-loop control and passive voltage optimized closed-loop control under normal safety condition. The invention can achieve comprehensive and coordinated closed-loop control for the safety of the power grid, the economy and the electric energy quality.

The invention relates to an integrated IBE data encryption system. The system comprises an IBE key server, a certification authority (CA) system, an identification authority system, an IBE service publication system, an IBE encryption application program, an IBE encryption application program interface (API), an IBE crypto module and an IBE key management client. The IBE service publication system publishes related service system information on line, and the encryption application program calls the IBE crypto module through the IBE encryption API to complete IBE data encryption and decryption functions; the IBE crypto module is connected with the IBE key server through the IBE key management client to obtain IBE public parameters and IBE private keys needed for the encryption and decryption; when the private keys are obtained, the IBE key management client obtains identification certifications from the CA system; and in an online interaction process, the key management client proves identities of users by using the identification certifications signed by the CA system. The system solves the key problems of identification safety, identification attribution confirmation, obtaining convenience of the public parameters and the like in IBE encryption.

The invention provides a conduit leakage inspection and safety early warning test system for oil-gas transportation conduit leakage inspection and corresponding early warning technique tests, relating to mechanical vibration or sound wave impact metering and conduit system technique field, comprising a circular conduit (53) which is connecting with a storage can region (2) and a pump (9) to be a close ring, is imbedded underground, is antiseptically treated and is cathodic protected, and a circular optical fibre (54) imbedded in one ditch. The circular conduit (53) has two lead-out branch pipes and a plurality of relief valve wells. A plurality of valves, volume meters and pressure instruments are provided on the conduit. An air compressor (26) is provided on one lead-out branch pipe, and another lead-out branch pipe is unloaded. A plurality of valves, pressure instruments and gas flowmeters are provided on the circular conduit. Pressure sensors of a circular conduit on-site instruments and remote transmitting cables transmit pressure signals to a central control room.

The invention provides a positioning method and system of an automatic driving automobile. The positioning method of the automatic driving automobile comprises the following steps: collecting trafficenvironment information around a vehicle, wherein the traffic environment information includes: a lane line of a road on which the vehicle travels, a distance between a wheel and the lane line, a roadcurvature of the road on which the vehicle travels, and a distance between the vehicle and a surrounding reference object; obtaining a high-precision map of the vehicle position, and calculating a theoretical positioning coordinate of the vehicle according to the traffic environment information and the high-precision map; and obtaining a satellite positioning coordinate of the vehicle through a navigation and positioning system, and correcting the vehicle positioning data through a manual input manner if the difference between the satellite positioning coordinate and the theoretical positioning coordinate is greater than a first preset threshold. The invention can improve the positioning accuracy and safety of the automatic driving automobile.

The invention provides a biological mass thermal decomposition, gasification and purification method which comprises, disintegrating the biological mass, gasifying in a furnace, obtaining retort gas, cyclone dedusting, cooling down and purifying, high voltage static coke trapping, making the coke tar bubbles and dust in the coal gas deposit onto the coke collection poles, thus purifying the coal gas, finally washing and dewatering.