154results about How to "Enough security" patented technology

The invention discloses a section double encryption and safe loading method of a Windows dynamic link library and aims at solving the technical problems that dynamic link libraries in prior art are prone to be tracked and debugged, privately loaded by application programs and statically disassembled. The method includes the following steps of analyzing a Windows dynamic link library file structure, establishing a private dynamic link library derived table, clearing away the derived table of the dynamic link library, respectively subjecting a code segment and a data segment of a dynamic link library file to encryption by an encryption key of an assigned encryption algorithm; subjecting the whole dynamic link library file to encryption by another encryption key of the assigned encryption algorithm; and outputting an interface function from the private dynamic link library derived table to an application program during loading.

The invention provides a chaos and hyperchaos based two-level video streaming media encryption method, which comprises the step of providing a chaos and hyperchaos based two-level video streaming media encryption algorithm. The method is combined with a video compression standard H.263 in network transmission; the first-level encryption is such that video streaming data is encrypted with a discrete cosine transform (DCT) based selective encryption algorithm in a video compression process; and the second-level encryption is performed after the video compression, and comprises the following two parts of: scrambling the video streaming data based on discrete Baker mapping, and confusing scrambled data based on hyperchaos mapping. As the multilevel encryption is adopted, and a hyperchaos system has a strong encryption performance, a video streaming media encryption system adopting the method can be used for effectively resisting malicious attacks and professional decryption; and moreover, the encryption method has a significant application value in the field of the safety of transmission information of network streaming media.

The invention discloses a safety scanning register, a safety scan chain and a scanning method of the safety scan chain and belongs to the field of measurability design of an integrated circuit. The safety scanning register consists of a D trigger, an XOR gate and an alternative multiplexer. A data input end of the D trigger is connected with an output end of the alternative multiplexer. An output end of the D trigger is connected with a first input end of the XOR gate. A second input end of the XOR gate is connected with a second data input end of the alternative multiplexer. The safety scan chain disclosed by the invention comprises conventional scanning registers and the safety scanning registers. All the registers are cascaded. The number and the positions of the registers are determined according to a certain rule. The safety scan chain disclosed by the invention can resist the reset attack. Sufficient safety can be obtained by small area cost. The safety scan chain has high practicality.

The invention provides a biogas digester which is used for solving the problem that waste of biogas is easily caused in the slag removal process in the conventional biogas digester. The biogas digester comprises a gas storage tank and a digester body in which a fermentation disc is arranged, wherein the top of the digester body is connected with a sealing cover; a lifting device which can drive the fermentation disc to translate up and down is arranged at the bottom of the fermentation disc; a gas inlet pipe and a gas outlet pipe are arranged between the gas storage tank and the digester body; a gas suction piece I is arranged in the gas inlet pipe; a sealing plate I and a sealing plate II are arranged in the gas storage tank; an elastic piece through which the sealing plate I has the tendency of sealing the gas inlet pipe is connected to the sealing plate I; a cylinder I through which the sealing plate II seals or opens the gas outlet pipe is connected to the sealing plate II; an exhaust pipe and a pressure gage are connected to the digester body; a gas suction piece II is arranged in the exhaust pipe; a sealing plate III is arranged at the end face of the exhaust pipe; and a spring I through which the sealing plate III has the tendency of sealing the exhaust pipe is arranged between the gas suction piece II and the sealing plate III. The biogas digester disclosed by the invention has the advantages that waste of biogas is avoided during slag removal.

The invention provides a high-altitude falling and drowning safety guaranteeing system for an automobile and a control method thereof, which belongs to the technical field of automobiles. A problem of the prior art that the safety is not high is solved. The high-altitude falling and drowning safety guaranteeing system for the automobile comprises a control unit, an immersion sensor, a weightlessness signal sensor, a door lock controller, an automobile window controller and an engine controller, wherein the immersion sensor and the weightlessness signal sensor are connected with an input end of the control unit; and the door lock controller, the automobile window controller and the engine controller are connected with an output end of the control unit. The high-altitude falling and drowning safety guaranteeing control method for the automobile comprises the following steps of exerting the control unit to receive signals transmitted by the weightlessness signal sensor and the immersion sensor and to analyze and judge the received signals; and exerting the control unit to send a control signal to control automobile window closing, automobile door unlocking and engine fuel cutoff when a high-altitude falling accident or a drowning accident is judged. The high-altitude falling and drowning safety guaranteeing system for the automobile and the control method thereof, provided by the invention, is advantaged in that safety measures such as automobile door unlocking, fuel cutoff and so on are automatically executed for passengers on the automobile to escape in case of high-altitude falling and drowning.

The invention provides a concrete block regeneration aggregating processing car, belonging to a special purpose engineering car. The concrete block regeneration aggregating processing car comprises a car body and has a structure that a device used in the concrete mixing waste material processing production is integrally arranged on a frame (10) of a chassis according to the production line in the stone fabrication plant, the power of the processing system is provided by a diesel fuel electric generating set (8); and the production flow line comprises loading, vibrating feeding, jaw smashing, counterattack smashing, vibrating sieving and discharging. The concrete block regeneration aggregating processing car can process the concrete road surface mixing waste material on the spot in the process of paving or overhauling the concrete road and is applied to the building of the road, has good flexibility, high production efficiency, high degree of production automation and low operation cost, can adapt to various working environments and meet various requirements, saves energy resources and protects the environment.

The invention discloses a manufacture technique of tap shells for polar drill rigs. The manufacture technique incudes: (1) for forging, performing forging via upsetting, punching, broaching and forming to guarantee a forging fiber flow line under the conditions that heating temperature is 1270-1310 DEG C, initial forging temperature is 1100-1250 DEG C and terminal temperature is not lower than 850 DEG C, performing annealing after forging under the condition that the heating temperature is 880+/-20 DEG C, and performing furnace cooling to enable tapping temperature not higher than 300 DEG C; (2) for heat treatment, normalizing at temperature of 880-900 DEG C prior to air cooling, quenching at temperature of 840-860 DEG C prior to oil cooling or cooling with a PAG quenching medium, tempering at temperature of 580+/-40 DEG C prior to air cooling, performing subcritical quenching at temperature of 790+/-10 DEG C prior to oil cooling or cooling with the PAG quenching medium, and tempering at temperature of 520-600 DEG C prior to air cooling; (3) for non-destructive inspection, finishing prior to machining a product according to size, and performing ultrasonic inspection and magnetic particle inspection, wherein the qualified level conforms to API Specification 8C standards. Compared with the prior art, the manufacture technique has the advantages that the tap shells manufactured with the technique have high strength to guarantee enough safety factor, adapt to polar regions (at the temperature of minus 60 DEG C) and meet the requirement on enough low temperature impact toughness so as to resist to the low-temperature environment of the polar regions.

The invention discloses an immersed liquid phase change cooling medium and application thereof in a cooling system of electronic equipment, wherein the cooling medium is a mixture formed by mixing one, two or three of perfluoro-4-methyl-2-pentene, a hexafluoropropylene tripolymer, perfluorohexanone, perfluoroheptane, perfluorooctane, perfluoro-2-methyl-2, 3-epoxy pentane, perfluorohexane and perfluoropentane. The immersed phase change cooling medium provided by the invention has the characteristics of high electrical insulation property, low viscosity, relatively low boiling point, high gasification latent heat, good compatibility and stability, incombustibility, combustion inhibition, low global warming potential (GWP), zero ozone depletion potential (ODP) and the like.

The invention provides a control method for confirming user account information by a user terminal, wherein, the method comprises the steps as follows: a. user account indication information is confirmed according to user information; and b. the indication information is sent to the user terminal. The indication information can be identification information associated with the user account, and the step a. comprises the step of confirming the identification information according to the user information and also comprises the step of setting the associated relation of the identification information and the user account. The invention also provides a control system for confirming the user account information by the user terminal, an auxiliary control method for disposing the user account by the user terminal, an auxiliary control system for using the user account by the user terminal and a control apparatus used for confirming the user account information in an assisting way and/or carrying out auxiliary disposal towards the user account in the user terminal. The invention can confirm the user account and dispose the user account in an assisting way by the user terminal, and has flexible form and enough safety.

The invention discloses an electric switch provided with a separate arc-extinguishing device. The technical problem to be solved by the invention is to provide an electric switch provided with a separate arc-extinguishing device, having the advantages of simple structure, small size and stable performance. The electric switch provided with the separate arc-extinguishing device comprises a base, acircuit breaker and a connecting rod assembling mechanism. By arranging the unique connecting rod assembling mechanism, the rotating force applied on a transmission shaft can be converted into the vertical force on a pull rod. Therefore, the electric switch of the invention has the characteristics of simple structure, small size and high connection reliability of each part.

The invention discloses a traction running mechanism for a climbing girder crane, which comprises the field of cranes. Traction hoisting machines comprise two low-speed hoisting machines which are fixed on an upper chassis of the crane in a bilateral symmetry manner ; two hoisting cable-pulley groups are symmetrically connected between the two traction hoisting machines of the upper chassis and corresponding front anchoring mechanisms; the pulling force of the traction hoisting machines is used for providing traction power and overcoming the downwards-sliding power caused by deadweight to pull the whole mechanism to move ahead; the design of the hoisting cable-pulley groups guarantees the stable movement direction of hoisting cables and provides sufficient safety factor assurance; a block brake is arranged at the output shaft end of a motor of the traction running mechanism; meanwhile, a disc brake is arranged on a winding drum wallboard; when the traction hoisting machine rotates, the tensile force of the hoisting cables can prevent the crane from sliding from a ramp; and when the traction hoisting machine is braked, the block brake and the disc brake can be started to realize double safety brake, so that the downwards-sliding of the crane caused by the counter revolution of the hoisting machine is effectively prevented, and the safety requirement is guaranteed.

The invention relates to an urban rail transit switch rail and a manufacture process thereof. Switching force of the switch rail can be reduced, even fewer switches are required, purchase cost of switch equipment is lowered, a slide plate fitted to the switch rail is provided with wedged regulation spring fasteners, stability and safety of the switch rail are enhanced, and amount of daily maintenance for switches by maintainers can be reduced effectively. The urban rail transit switch rail is made of a 60D40 steel rail. The urban rail transit switch rail has the advantages that the switch rail is made of the 60D40 steel rail, switching force of the switch rail is reduced, and the slide plate convenient to fit to the switch rail is provided with the elastic fasteners with high fastening force; the 60D40 steel rail has small rail height, thin waist and narrow bottom, low horizontal and vertical inertial torque and the like, space condition is provided for the design of switches, the train shaft with the switch rail for urban rail transit is lighter than train shafts for passenger special lines, and safety is sufficient.

The invention relates to the field of video conference technologies, and discloses a video conference calling method and a video conference calling device. The video conference calling method includestransmitting request signals to second conference terminals or conference platforms by the aid of first conference terminals which support domestic password encryption algorithms; receiving feedbackinformation of the second conference terminals or the conference platforms by the aid of the first conference terminals; judging whether the second conference terminals support the domestic password encryption algorithms or not by the aid of the first conference terminals according to the feedback information; setting up conferences on the basis of the domestic password encryption algorithms by the aid of the first conference terminals and the second conference terminals when the fact that the second conference terminals support the domestic password encryption algorithms is determined, and carrying out encryption processing on data by the aid of the domestic password encryption algorithms. The data are transmitted in the conferences. The video conference calling method and the video conference calling device have the advantages that the domestic password encryption algorithms are applied to data transmission procedures in the video conferences on the premise that two ends support thedomestic password encryption algorithms, accordingly, the safety of data transmission in the video conferences can be sufficiently guaranteed, and the video conference calling method and the video conference calling device are favorable for promoting integration of national standards and international standards.

The invention provides a robot for picking and delivering goods in an unmanned supermarket and an automatic loading method, relate to the field of the unmanned supermarket; the robot comprise a powersupply, an autonomous navigation trolley, a base arranged on the autonomous navigation trolley and a robot arranged on the base; a robot controller for controlling the robot is arranged on the base; the base is provide with a bracket, one end, away from the base, of the bracket is provided with a visual camera; one end, away from the base, of the robot is provide with a grabbing device; an intelligent camera is arranged on the grabbing device; the base is provided with an air compressor for controlling the opening and closing of the grabbing device, a visual camera controller for controlling the visual camera and an intelligent camera controller for controlling the intelligent camera; the base is provided with a placing frame for placing goods; the beneficial effects are as follows: the robot can automatically mount and dismount various goods, improve working efficiency, reduce the management cost of the unmanned supermarket and meet the needs of the unmanned supermarket.

The invention provides a manufacturing method of a hook body of a large hook for a polar region drilling machine. The manufacturing method adopts the process steps of design and blanking, forging, rough machining, heat treatment and finish machining, and the hook body is processed according to requirements of GB/T19190 and APISpec8C. The forging hook body processed by the manufacturing method adopts the integral forging design, the conventional material 35CrMoA and normalizing, tempering and subcritical quenching processes are adopted, and the intensity, the impact power in the polar low-temperature environment (-60 DEG C) and other mechanical properties of the hook body are ensured. The hook body of the large hook processed by the manufacturing method is applicable to petroleum drilling machines and workover rigs in polar low-temperature environment (-60 DEG C), the safety factor is guaranteed, and sufficient low-temperature impact toughness and polar low-temperature environment resistance performance is realized.

The invention discloses a large freight vehicle tail anti-impact device which comprises a front face impact board. An oblique board is arranged at the upper end of the front face impact board. A height adjusting mechanism fixed to the tail end of a vehicle girder is arranged on the inner side of the oblique board. A connecting frame is arranged on the inner wall face of the front face impact board. A limiting buffering mechanism located on the two sides of the tail of the vehicle girder is hinged to the two ends of the connecting frame and located on the inner side of the height adjusting mechanism. The limiting buffering mechanism comprises two bases fixed to the vehicle girder. A horizontal guide rod is arranged between the two bases and sleeved with a horizontal sliding seat. The horizontal sliding seat is hinged to the connecting frame. A buffer spring is further arranged on the side face of the horizontal sliding seat, wherein the horizontal guide rod is sleeved with the buffer spring. The large freight vehicle tail anti-impact device has the beneficial effects that the safety protection performance can be improved.

The invention discloses a pipe-in-pipe structure convenient for optical cable laying and replacing and a laying method. The structure comprises a conveying pipeline and optical cable channels, whereinthe optical cable channels are divided into a plurality of sections; each section comprises a main body and lead-out sections at both ends; the main bodies are fixed on the inner wall of the conveying pipeline; the lead-out sections at both ends respectively pass through corresponding lead-out holes in the conveying pipeline to be led out of the conveying pipeline; and gaps at the lead-out holesare sealed. During laying, micro tubes are fixed on the inner wall of the conveying pipeline to form the optical cable channels and gaps among the micro tubes are sealed to prevent the micro tubes from gas leaking and water leaking; the micro tubes are led out of the conveying pipeline from the lead-out holes every 1500m to 2500m to form the lead-out sections and gaps between the micro tubes and the lead-out holes are sealed to avoid gas leakage and water leakage; optical cables are laid in the micro-tubes of each section and two ends of the optical cables are exposed out of the micro-tubes; and the optical cables of the adjacent sections are fused together, joints are protected by joint boxes and gaps between the optical cables and the micro tubes are sealed. After the micro tubes are laid, faulty optical cables in the micro tubes can be replaced at the lead-out sections without stopping of the medium conveying in the conveying pipeline.

This invention puts forward a high safety network management method based on SNMP including the following steps: a, NMS starts up and carries out initialization, b, the NMS tests the communication state of NE and the state of cryptographic key to determine if it's necessary to carry out cryptographic key synchronization with the NE, c, the NMS generates the SNMP Get request for enquiring the current information of the NE and sends it to the NE, which feeds back the SNMP response containing the required current information of the NE, d, the NMS generates the SNMP Set requirement for controlling/configuring NE to be ciphered and sent to the NE, which feeds back the SNMP response containing the control/configuration result.

The invention discloses an immersed phase change cooling medium and application thereof in a cooling system of an electronic device. The cooling medium is one or a mixture of two or more of perfluoro-4-methyl-2-pentene, perfluoro-2-methyl-3-pentanone, perfluoro-2-methyl-2, 3-epoxypentane and perfluorohexanone. The immersed phase-change cooling medium provided by the invention has the characteristics of high electrical insulation property, low viscosity, lower boiling point, high gasification latent heat, good compatibility and stability, incombustibility, combustion inhibition, low global warming potential (GWP), zero ozone consumption potential (ODP) and the like.

The invention discloses a screening method for a lithium-ion storage battery, belongs to the field of satellite power supply and aims to solve the problem that the production cost of a storage battery in an existing Pina satellite power supply subsystem is high. The method comprises the following steps: step (1) testing physical characteristics of all to-be-screened lithium-ion storage batteries to obtain the size and quality of the storage batteries, and weeding out the storage batteries of which the total run-out value is abnormal; step (2) testing electrochemical characteristics, and measuring open-circuit voltage; step (3) obtaining charging capacity and discharging capacity; step (4) performing a vibration test, comparing the vibration test with the last measurement, and weeding out the storage batteries of which the open-circuit voltage is abnormal or the charging and discharging capacity changes are abnormal; step (5) performing a vacuum leakage rate test, comparing the vacuum leakage rate test with the last measurement, weeding out the storage batteries of which the total run-out value, quality changes, charging and discharging capacity changes or open-circuit voltage changes are abnormal, and taking the rest lithium-ion storage batteries as the lithium-ion storage batteries obtained after screening. The storage batteries screened by the method disclosed by the invention are applied to the Pina satellite power supply subsystems.

The present invention relates to the technical field of recording and broadcasting, and discloses a recording and broadcasting data processing method and device. The method comprises the steps that: arecording and broadcasting server receives a play request of a client; the recording and broadcasting server determine multimedia data required by the client and corresponding encryption keys according to the broadcasting request, wherein the multimedia data stored in the recording and broadcasting server are ciphertext data after encryption processing by a password device, and the correspondingencryption keys are ciphertext secret keys after encryption processing by the password device; the recording and broadcasting server transfers the password device, employs the password device to perform secondary processing of the multimedia data required by the client and the corresponding encryption keys and obtains the multimedia data and the corresponding encryption keys after secondary processing; the recording and broadcasting server sends the multimedia data after secondary processing to the client. In the recording and broadcasting data transmission process, the plaintext is not fell to ensure the safety of the recording and broadcasting data in the transmission process and be not easy to be attacked by an intermediary.

The invention relates to a structure in the field of ecological protection and specifically relates to a tidal basin. A basin body of the tidal basin is square or round and is connected with parts of flow sections of a river; the end, connected with the river, of the basin body is provided with a water inlet, a water outlet and an arc-shaped dam, the water inlet is formed in an upstream position of the water outlet, the arc-shaped dam comprises an arc-shaped flow disturbing region arranged in a river channel and a water flowing region arranged in the basin body, and the top of the arc-shaped dam is higher than a flood water level; the edge of the other side of the basin body is provided with a revetment vegetational zone, the inner side of the revetment vegetational zone is provided with a shallow water transitional zone and a deep water fish nest region, the shallow water transitional zone communicates with the water inlet and the water outlet, and the deep water fish nest region communicates with the shallow water transitional zone; and one side of the water flowing region of the arc-shaped dam is provided with a plant stepped dam.