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89results about How to "Chieve protective" patented technology

Efficient condition privacy protection and security authentication method in internet of vehicles

The invention discloses an efficient condition privacy protection and security authentication method in an internet of vehicles. The efficient condition privacy protection and security authentication method comprises the following steps of: system initialization, generation of pseudonym identities and signature private keys of vehicles, signing and authentication of a message and tracing of real identities of the vehicles. The vehicles carry out cooperative communication with surrounding vehicles and roadside units deployed at both sides of a road by on-board units assembled on the vehicles, driving security of the vehicles can be effectively improved, and vehicle users can more conveniently and rapidly acquire related traffic services. The efficient condition privacy protection and security authentication method disclosed by the invention not only can meet security requirements in the internet of vehicles, but also optimizes the computing process of signature generation and verification in the communication. The efficient condition privacy protection and security authentication method is greatly improved on the aspect of efficiency of computing cost, communication cost and the like, and is more applicable to communication and application in the internet of vehicles.
Owner:ANHUI UNIVERSITY

Method for preparing multi-layer composite functional surgical dressing

The invention relates to a method for preparing a multi-layer composite functional surgical dressing. The method comprises the following steps: respectively and independently carding the fiber layers comprising a functional layer which is formed by mixing chitosan fiber or chitosan fiber and viscose and is directly contacted with the skin, a water-absorbing layer which is made of viscose and has high liquid absorption performance and a protective layer which is formed by mixing the viscose and polyester fiber and has the supporting and protecting functions so as to form a net, manufacturing a three-layer laminate with an upper functional layer, a middle water-absorbing layer and a lower protective layer by employing a water jet strengthening technology, coating a waterproof agent on the protective layer of the three-layer laminate to form a waterproof layer, and finally rolling to obtain the surgical dressing. The product has high biocompatibility and promotes healing, the antibacterial rate is up to 96.7 percent, the liquid absorption rate is 1259 percent, the waterproofing grade is up to level 5, and the surgical dressing can be used for clinical repair for operative incision, burn, scald, ulcer and other skin injury and is simple in production process, low in cost and environmentally-friendly.
Owner:DONGHUA UNIV +1

Automatic reciprocating cleaning device for unmanned aerial vehicle image monitoring

InactiveCN108889651AAchieve cleaning effectSolve the problem of being easily covered by dustFlexible article cleaningCleaning using toolsUncrewed vehicleEngineering
The invention discloses an automatic reciprocating cleaning device for unmanned aerial vehicle (UAV) image monitoring, which comprises a mounting tube, wherein the lower surface of the mounting tube is fixedly connected with a tempered transparent glass, the bottom inner wall of the mounting tube is fixedly connected with a video camera through a partition plate, and the upper surface of the partition plate is fixedly provided with a central processor. An automatic reciprocating cleaning device for image monitoring of an unmanned aerial vehicle the effect of reciprocating cleaning of the cleaning rod is achieved, When the connecting rod touches the upper travel switch, the upper travel switch sends out an electrical signal, Control motor reverse, the connecting rod slides down in the chute, When the connecting rod touches the lower travel switch, the lower travel switch sends an electrical signal, By controlling the motor to rotate forward, the connecting rod slides upward in the sliding groove, and then the rotating pin shaft is controlled to rotate forward and backward, so as to control the cleaning rod to swing back and forth and achieve the effect of automatic cleaning, therebyeffectively solving the problem that the monitoring equipment used in the unmanned aerial vehicle is easily covered by dust and affects its normal use.
Owner:钟乘凤

Spark cluster outage self-protection and incoming telegram self-starting method

The invention provides a spark cluster outage self-protection and incoming telegram self-starting method. The method comprises the steps of connecting all host computers with exchangers separately, wherein LAN of routers is connected with the exchangers; the host computers and the exchangers are all supplied with power through a UPS, and the routes are supplied with power through mains supply; all the host computers, the exchangers and the routers form a local area network; multiple host computers form a cluster through the exchangers; any of the host computers is set to be a main node, and other host computers are set to be subsidiary nodes; the main code detects whether or not the routers are online every fixed time period, the mains supply is regarded as being switched off when the several subsidiary codes detect that the routers are offline, then a spark cluster is closed, a hadoop cluster is then closed, and finally all the host computers are closed, so that cluster software and hardware are protected from being damaged; if the mains supply is resumed, the routers are automatically started, the main node is awakened through the local area network, and subsequently the main node automatically opens the cluster, so that the purpose of cluster incoming telegram self-starting is reached.
Owner:NORTHWEST UNIV(CN)

Secondary plating-prior-to-etching metal frame subtraction imbedded chip normal-installation bump structure and process method

The invention relates to a secondary plating-prior-to-etching metal frame subtraction imbedded chip normal-installation bump structure and a process method. The structure comprises a metal substrate fame (1). The metal substrate fame (1) is internally provided with base islands (2) and pins (3). The back surface of each base island (2) is flush with the step surface of each pin (3). The step surface of each pin (3) is provided with a metal layer (4). The back surface of each base island (2) is normally equipped with a chip (6). The surface of the chip (6) is connected with the surface of the metal layer (4) through a metal line (7). The metal substrate fame (1) is internally filled with plastic packaging material (8). The front surface of the plastic packaging material (8) is flush with the step surface of the pin (3). The back surface of the plastic packaging material (8) is flush with the back surface of the metal substrate fame (1). The front surface of the base island (2), the front surface and the back surface of each pin (3) as well as the front surface and the back surface of the metal substrate fame (1) are provided with an anti-oxidation layer (9). The back surface of each pin (3) is provided with a metal ball (10). The beneficial effect of the structure and method is that: the problem that the function and the application performance of a conventional metal lead frame are limited since an object cannot be imbedded in the metal lead frame is solved.
Owner:JCET GROUP CO LTD

One-time eroding-before-plating metal frame subtraction embedded chip inversely-arranged salient point structure and technological method

The invention relates to a one-time eroding-before-plating metal frame subtraction embedded chip inversely-arranged salient point structure and a technological method. The one-time eroding-before-plating metal frame subtraction embedded chip inverse arranged salient structure is characterized in that a metal substrate frame is included, a paddle and pins are arranged in the metal substrate frame, chips are arranged on the back face of the paddle and the step surfaces of the pins through bottom filled glue, plastic packaging materials wrap the area of the periphery of the paddle, the area between the paddle and the pins, the area between the pins, the areas on the upper portion of the paddle, the areas on the upper portions of the pins, the area on the lower portion of the paddle, and the area on the lower portions of the pins and the chips, the plastic packaging materials are aligned with the upper surface and the lower surface of the metal substrate frame, anti oxidation layers are plated on or organic solderability preservative (OSP) wraps the front face of the paddle, the front faces and the back faces of the pins and the surface of the metal substrate frame, and metal balls are arranged on the back faces of the pins. The one-time eroding-before-plating metal frame subtraction embedded chip inversely-arranged salient point structure has the advantages of being capable of solving the problem that the function and the application performance of a metal wire frame are restricted due to the fact that objects cannot be buried in the plate thickness of the traditional metal wire frame.
Owner:JCET GROUP CO LTD

Air-controlled thermostatic printing ink roller for printing

The invention provides an air-controlled thermostatic printing ink roller for printing, and relates to the technical field of printing. The air-controlled thermostatic printing ink roller comprises anink roller, wherein an ink cavity is formed in the middle of the ink roller, a heating sheet is fixedly connected to the inner wall of the ink roller, and an air cavity is formed in the inner wall ofthe left side of the ink roller. According to the air-controlled thermostatic printing ink roller for printing, the air cavity and a conductive block are matched for use; in an initial state, a circuit of the heating sheet is switched on, and the ink in the ink cavity is heated; at the same time, a heating sheet at the bottom of the air cavity simultaneously heats the air at the bottom of a piston block, so that the air expands to upwards push the piston block; when the heating sheet is heated to a certain temperature, the circuit of the heating sheet is switched off; when the temperature ofthe ink cavity is decreased, the temperature of the air in the air cavity drops and contracts, the piston block descends, the conductive block is connected with the electric ring again, the circuit ofthe heating sheet is switched on, and the heating sheet is heated to the specific temperature again, so that the constant temperature effect of air holes is achieved, the ink is effectively ensured to be in the most suitable state, and the printing quality is improved.
Owner:万杰

Novel efficient desulfurization and denitrification agent

The invention relates to a novel efficient desulfurization and denitrification agent. The novel efficient desulfurization and denitrification agent is prepared by taking solid waste slag as a main material and taking calcium hypochlorite as an auxiliary material, wherein the solid waste slag contains a certain quantity of iron and calcium playing an important role in desulfurization and denitrification of flue gas, and through determination, the content of average effective calcium in the waste slag is 20%, the content of average effective iron is 8.6%, the content of Fe<2+> is 5.8%, and the content of Fe<3+> is 2.6%. The novel efficient desulfurization and denitrification agent takes calcium hypochlorite as the auxiliary material and takes Ca(ClO)2 as an absorption medium for desulfurization and denitrification reaction, thereby having the following two advantages: (1) ClO- has very strong oxidizing property so as to be favorable for oxidizing SO2 and NO dissolved in water to SO4<2-> and NO3<-> which are in highest valence states respectively, and removing together; (2) a large amount of Ca<2+> exists in a reaction system, and the dissolution of slightly soluble CaSO4 is inhibited so as to be favorable for producing a solid precipitate and further promoting the movement of balance of the desulfurization and denitrification reaction to the positive direction. The novel efficient desulfurization and denitrification agent can effectively remove sulfur and nitrates in the flue gas, and fully utilize the solid waste slag so as to reduce the serious harm to the water and soil; simultaneously, the novel efficient desulfurization and denitrification agent can be fully utilized to perform desulfurization and denitrification on the flue gas so as to achieve the effects of purifying and protecting the environment.
Owner:天津聚贤达科技有限公司
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