38results about How to "Reduce pressure on resources" patented technology

The invention relates to a high-reliability spatial optical network communication terminal and method based on optical comb detection, comprising: performing beam pointing alignment on a communicationterminal and an opposite terminal before inter-satellite communication or satellite-to-earth communication; separating signal light and a femtosecond optical comb signal according to signals transmitted by the opposite terminal, and converting the separated signal light into an electrical signal for demodulation; reflecting the separated femtosecond optical comb signal to the communication terminal; determining whether the communication terminal is in the satellite-to-earth optical channel detection state; if so, entering the satellite-to-earth optical channel detection state: converting theseparated femtosecond optical comb signal into an electrical signal for sampling, monitoring the channel attenuation and channel interface mutation, and modulating the signal on the femtosecond optical comb according to the monitoring result; and summarizing and counting the channel quality of each link; and otherwise, entering the inter-satellite ranging state: interfering with the separated femtosecond comb signal and the reference comb to obtain an inter-satellite ranging signal. The invention improves the reliability and flexibility of a spatial optical network.

The invention relates to the field of security and protection monitoring and discloses an authorization management system facing intelligent video analysis services and a method thereof. In the system and method, the video analysis services are susceptible to interferences of abnormal states of network and analysis resources so that an authentication subsystem is introduced to divide a process in which authority of providing the services to any user is divided into two steps of authorization and authentication so that granting and confirmation of user authority are separated and thus network cheating can be prevented effectively and service quality is improved and perceptibility and satisfactory degree of the user to the services are improved. In an authorization process, with respect to a problem that an authorization server comes apart with actual analysis resource information, a video source detection unit is added to generate an authorization resource pre-decision strategy so that the success rate of the authorization is increased. In an authorization process, the authentication system is added and authorization confirmation is only performed only to services which provide effective video analysis in the system. In a specific degree, the method is equivalent to increase of the number of users which can be authorized and user service perceptibility is promoted.

A vehicle computing task offloading method based on blockchain data sharing, aiming at the data sharing and secure transmission of computing task offloading between vehicles, using blockchain technology to design the sharing of computing offloading service vehicle information in edge computing nodes The transmission mechanism can ensure that the trusted service vehicle information can be released in a wide range, and promote the effective matching of user vehicles and service vehicles. Aiming at the limited roadside resource problem of offloading computing tasks between vehicles and roadside edge nodes, the computing offloading behavior of each vehicle is regarded as a competition for edge server resources, and the competitive behavior of each vehicle in the scene is analyzed using the game theory framework. Carry out game theory description, determine the calculation offloading strategy of each vehicle according to the resource occupancy of the edge node and the surrounding service vehicles, realize the equilibrium state among the calculation offloading strategies of each vehicle, and improve the operation of the edge computing system under the premise of effective resource utilization efficiency.

The invention belongs to the field of water-based UV curing materials, and specifically relates to a method for preparing castor oil-based water-based photocurable non-ionic emulsions, including (1) reacting castor oil, ricinoleic acid and an esterification catalyst, and adding a precipitation agent after dissolving Precipitate the product; (2) Mix diisocyanate and dibutyltin dilaurate and slowly add to the product of the previous step to react to obtain an intermediate product; (3) Dissolve the intermediate product with a solvent, then add polyethylene glycol acrylate and polymerization inhibitor (4) The star-shaped castor oil-based water-based UV-curable prepolymer, vegetable oil-based reactive nonionic surfactant, free radical photoinitiator and cationic photoinitiator The agent is mixed and added with water to disperse evenly to obtain castor oil-based water-based light-curable non-ionic emulsion. The star-shaped castor oil-based water-based UV-curable prepolymer prepared by the method of the present invention has high crosslinking density, and the coating film prepared by using it has excellent mechanical and water resistance properties, and can be used as an environment-friendly coating, ink and adhesive. film-forming base material.

The invention relates to an optical comb and signal modulation multiplexing terminal and method capable of being used for distance measurement and communication integration. A terminal includes: a terminal; The system comprises a control unit, a signal light source, a beacon light source, a femtosecond optical comb module, an optical coupler A, an optical coupler B, a photoelectric detection module A, a photoelectric detection module B, an electric amplifier, an electric phase-locked loop, a signal modulation and demodulation module, an optical light path, a pointing alignment system, a spectroscope A, a spectroscope B, a spectroscope D, a telescope system, a reflector C, a CCD camera and a servo driver. And by adjusting the light emitting power of the optical comb signal of the transmitting end, the transmitting end obtains a precise distance measurement signal between the two terminals so as to ensure the distance measurement function. According to the invention, the optical comb isused as the basis of inter-satellite precise distance measurement, the inter-satellite precise distance measurement and broadband communication are simultaneously realized by adopting one set of lightbeam tracking and aiming device, the reliability and the multifunction are high, and the flexibility of a future space optical network can be improved.

An auxiliary standing device and method based on indoor positioning and artificial intelligence are disclosed. In the device, the profile support frame is connected to an eight-bar linkage mechanism. When the electric push rod activates the eight-bar linkage mechanism, the profile support frame is actuated via the eight-bar linkage mechanism. To support the elbows and underarms during the lifting process, the flexible bionic mechanism can be rotatably connected to another eight-link mechanism, and the flexible bionic mechanism is driven by a second motor to rotate to fit the curve of the user's back. In response to face recognition data, The control board sends a starting command and generates user pose data. In response to the first position data, the control board sends a first signal to the electric push rod and the second motor to actuate the eight-bar linkage mechanism, so that the profile support frame and the flexible bionic mechanism assist in standing up Supporting, in response to the second position data, the control board plans to generate a route trajectory, the rocker is configured to generate a movement command to control the movement of the auxiliary standing device, and the driver is arranged on the base plate to control the motor to move the wheel based on the route trajectory or movement command.

The invention discloses a method for recycling carbon and electrolytes from a waste cathode carbon block of an aluminum electrolytic cell. The method comprises the following steps that 1, the cathode carbon block is crushed and grinded; 2, cathode carbon powder obtained from the cathode carbon block subjected to crushing and grinding in the step 1 is stirred and leached in alkali liquor and then filtered, so that a filter cake A1 and filtrate B1 are obtained; and a precipitating agent is added into the filtrate B1, so that a filter cake A2 and filtrate B2 are obtained after filtering is conducted; and 3, the filter cake A1, the filter cake A2, a flotation medium and flotation reagents are subjected to mixing and pulp conditioning, and thus the carbon and electrolytes are obtained through flotation and separation; the flotation reagents comprises the collecting agents, the foaming agents and the conditioning agents; the collecting agents are composed of the collecting agent C1 and the collecting agent C2 at the mass ratio of 0.65-0.75:0.25-0.35; the collecting agent C1 is selected from at least one of coal tar, heavy oil, kerosene and diesel oil; and the collecting agent C2 is selected from at least one of dodecylamine, sodium dodecyl benzene sulfonate, sodium oleate and sodium dodecyl sulfate. According to the method for recycling the carbon and the electrolytes from the waste cathode carbon block of the aluminum electrolytic cell, the carbon powder and the electrolytes are effectively separated and recycled from the waste cathode carbon block.