35results about How to "Meet the requirements of actual use" patented technology

The invention discloses a friend relationship mining method combining network topology characteristics and user behavior characteristics. The method comprises the following steps of (1) establishing a friend relationship network diagram and randomly selecting 90% of friend relationship connection edge data as a training set and the rest of 10% as a test set; (2) constructing two weighted undirected graphs of a friend relationship network based on topological similarity; (3) constructing two weighted undirected graphs of a friend relationship network based on user behavior characteristic similarity; and (4) utilizing a community detection algorithm (CNM algorithm) based on weighting modularity to respectively carry out community division on the four weighted undirected graphs, if any two users are classified as one community in a division process of the four communities for at least three or more times, considering that the two users are friends. The method introduces the topology characteristics and the behavior characteristics are introduced into the user friend relationship networks and mines whether the two users are the friends through community division.

The invention discloses an anti-face recognition method based on PSO, comprising the following steps: S1, pre-processing the attacker's face data and adding a data set; 2, training a face classifier by use a mixed data set; 3, setting PSO parameters and antagonizing attack parameters; S4: initializing the PSO and starting the iterative evolution process to find the optimal countermeasure against the disturbance; S5: extracting and materializing the countermeasure accessories for physical attack test. The invention aims at the black box face recognition system, generates the optimal anti-disturbance through the PSO evolutionary strategy, realizes the materialization of the anti-disturbance through the facial accessories, can realize the effective anti-face recognition in the digital and physical environment, and has better model generalization ability and practical application value compared with other white box attack strategies.

The invention provides a double-acting hydraulic ejecting type vacuumizing and compressing device of double cylinder and belongs to the technical field of machinery. The double-acting hydraulic ejecting type vacuumizing and compressing device solves the problem that compressing capacity or vacuumizing capacity of an all-in-one machine of a piston type vacuum pump and a piston type air compressor cannot achieve the actual application requirements and comprises a hydraulic cylinder body and two cylinder bodies, wherein the cylinder bodies are respectively connected with two ends of the hydraulic cylinder body, a hydraulic cylinder piston is arranged in the hydraulic cylinder body, a double-extending rod with two ends respectively extending out of the hydraulic cylinder body and entering the cylinder bodies is fixed on the hydraulic cylinder piston, cylinder pistons fixed on corresponding end portions of the double-extending rod are respectively arranged in the two cylinder bodies, and an air inlet valve and an air outlet valve for communicating a cavity of the cylinder are respectively arranged on the end portions of the cylinder bodies on two sides of each cylinder piston. The double-acting hydraulic ejecting type vacuumizing and compressing device can integrate air compressing and vacuumizing, has three functions in one machine and can achieve the requirements for actual using.

The present invention relates to a deviation-rectifying equipment of trackless mobile shelf. It includes two groups of drive motors mounted on left portion and right portion of shelf chassis type jackplane, guide deviation-rectifying sensor device and controller, its guide deviation-rectifying sensor device is formed from photoelectric sensor mounted on one side surface of shelf chassis type jackplane and guideway fixed on the ground surface. Besides, it also includes a pair of infrared transmitting photoelectric switch and infrared receiving photoelectric switch.

The invention discloses a method and system for adjusting TDD system power amplifier linear. The system comprises an expected adjusting power amplifier, a radiofrequency signal source used to input the radiofrequency signal to the expected power amplifier and a frequency spectrograph used to measure the output signal power and the ACLR value of the expected adjusting power; the system also comprises a receiving-and-sending switch control signal generator used to output the switch control signal of the simulating TDD system time slot and control the switch condition of the synchronous working of the radiofrequency signal source, the expected adjusting power and the frequency spectrograph by the switch control signal; the output end of the receiving-and-sending switch control signal generator is connected with the external trigger input interface of the radiofrequency signal source, the external trigger input interface of frequency spectrograph and the control circuit of the expected adjusting power.

The invention discloses an organic corrosion inhibitor suitable for an antifreezing solution, which comprises the following components by weight: 20-30 parts of organic acidity and its salt, 10-13 parts of amide, 6-9 parts of nitrogen heterocyclic ring, 3-5 parts of solid state alkali, 4-7 parts of organic copolymer and 5-20 parts of water. Compared with prior art, the organic corrosion inhibitor added in the antifreezing solution plays good corrosion delaying effect, stability and foaming characteristic can satisfy the requirement of real usage, and all components in a formula are nontoxic or low-toxicity components, and the components have the advantages of low cost and easy acquisition.

The invention discloses a mouse based on fingerprint recognition and a use method of the mouse. The mouse comprises a mouse body and a matched electronic component of fingerprint identity authentication; the mouse body is provided with a data collection window and a trigger window, the mouse body is internally provided with a fingerprint information collection module, a fingerprint information processor, a trigger module and a GSM communication module; design is conducted by combining a sensor technology, a mode recognition technology, a reliability demonstration technology and a wireless communication technology and taking the computer mouse as a carrier. Accordingly, fingerprint information of a user is stored and transmitted at first, the identity of a person who puts the palm on the mouse is judged, and an unlocking operation on a computer desktop is completed according to judgment; new experience of human-computer interaction of a computer is enriched, and convenience of the mouse serving as a computer peripheral is enhanced.

The invention discloses a power network ground capacitance current detection method, comprising the steps of: installing a current type three-phase four-leg inverter bridge on a three-phase circuit; adjusting a service bridge leg to respectively inject detection current into A, B, C three phases to successively measure a neutral point offset voltage; utilizing a phase voltage, injected current and a neutral point offset voltage phasor to calculate split-phase ground capacitance; and calculating split-phase ground capacitance current according to the split-phase ground capacitance. Based on an original method, the power network ground capacitance current detection method utilizes a power electronic device to respectively add detection current with adjustable amplitudes and angles to the A, B, C three phases, measures the neutral point displacement voltages under the three conditions, and calculates split-phase ground capacitance based on a system phase voltage, thereby respectively calculating system the ground capacitance current of each phase of a system. The method has the characteristics of high accuracy, simple test and great safety, does not interrupt power supply for users, and meets actual use requirements.

The invention discloses a permanent antistatic polypropylene composite material and a preparation method thereof. The composite material is prepared from raw materials containing the following components: 75-91 parts of polypropylene, 5-15 parts of a carbon/wollastonite composite material, 4-10 parts of oxidized superconducting carbon black, 1-2 parts of a silane coupling agent and 0.1-0.5 part ofan antioxidant. By compounding the superconducting carbon black and the carbon/wollastonite composite material, the scheme is achieved, polypropylene is subjected to antistatic modification, the addition amount of the superconducting carbon black can be reduced, and the influence of the carbon black on mechanical properties of the material can be reduced. The composite material prepared by usingthe method has a permanent antistatic property and can be used in multiple fields such as electronic appliance turnover boxes and new energy vehicles.

The invention provides a radiating method for a variable frequency motor, and an air conditioner. The radiating method comprises the steps of determining the motor efficiency of a motor according to the frequency of the motor; determining the fan efficiency of a fan according to the frequency of the fan; and taking the frequency of the motor whose fan efficiency is not less than the motor efficiency as the operating efficiency of the motor according to the motor efficiency and the fan efficiency. The fan efficiency is not less than the motor efficiency, so that the attenuation of the heat dissipating capacity of a winding of the motor is lower than that of the heating value of the winding; therefore, it is ensured that the temperature rise of the winding of the motor satisfies the actual application requirement; and in addition, the operating frequency of the motor is determined when the motor and the fan are operating synchronously according to the motor efficiency and the fan efficiency, so that the radiating effect of the motor is effectively improved.