13results about How to "Guarantee security protection" patented technology

The invention discloses a trusted DCS implementation method and system fusing point-to-point and server architectures, and relates to the technical field of industrial control systems, and the method comprises the steps: building a data link of a calculation part and a protection part on a terminal of a trusted DCS; establishing a data link between the trusted upper computer and the trusted management platform on the trusted upper computer; releasing trusted data of the trusted DCS in the point-to-point architecture of the DCS; and credible state prompting and alarming functions are added in a diagnosis page of the DCS, and credible item starting and stopping, credible abnormity alarming and alarming processing are carried out. According to the invention, by establishing a trusted data link, realizing data intercommunication and introducing a dynamic credibility evaluation mechanism, real-time data release and transmission of trusted information are realized in a point-to-point architecture of the DCS, so that the DCS system can know trusted state change in real time and give an alarm, the ability of the system to resist security threats is remarkably improved, and the reliability of the system is improved. And meanwhile, the compatibility with the existing DCS architecture is kept.

The invention relates to a semi-quantum mutual identity authentication method and system based on a single particle. The method comprises the following steps: determining a shared identity authentication key; the first authentication party selects a first calculation base or a second calculation base to generate a quantum bit according to the key bit value, and sends all the generated quantum bits to the second authentication party; the second authentication party measures or rearranges the received quantum bits according to the key bit value and compares the measurement result with the corresponding initial state, and if the measurement result and the corresponding initial state are the same, the first authentication party is considered to be legal; and the first authentication party receives the rearranged quantum bits and measures the quantum bits, and then compares a measurement result with a corresponding initial state, and if the measurement result is the same as the corresponding initial state, the second authentication party is considered to be legal. According to the invention, the simplicity and practicability of the quantum authentication process can be improved, and the problems of high resource consumption, dependence on a third party and incapability of identifying illegal identities in the existing scheme are effectively solved.

The utility model relates to the technical field of vehicle parts, and provides a battery pack bottom protection plate and a vehicle, the battery pack bottom protection plate comprises a metal layer, a first composite material layer and a second composite material layer, the metal layer comprises a protection part and a mounting part, the first composite material layer and the second composite material layer are laid on the upper surface and the lower surface of the metal layer respectively and cover the protection part and the installation part, the installation part is arranged along the edge of the protection part and used for being connected with the battery pack, and the strength of a metal material of the protection part is larger than that of a metal material of the installation part. Therefore, the battery pack bottom protection plate is roughly of a layer-by-layer stacked structure of composite material, metal and composite material, and the weight of the battery pack bottom protection plate can be reduced while the safety protection performance of the battery pack bottom protection plate is ensured; moreover, the upper surface and the lower surface of the metal layer are coated with the composite material layer, the risk that the metal layer is rusted can be reduced, electrophoresis and PVC spraying can be omitted, and the purposes of reducing weight and reducing cost are achieved.

The present invention relates to a noise reduction fan mesh cover, comprising an outer support ring, support strips, and an inner support ring, wherein the support strips are arranged on the outer support ring and the inner support ring to form a mesh cover, wherein the support strips are provided with a noise reduction mechanism, wherein the noise reduction mechanism comprises a plurality of first hollow tubes, wherein one end of the adjacent first hollow tubes is interconnected through a second hollow tube to form a branch pipe silencer structure, wherein the other end of the first hollow tube is provided with a cutout, and the length of the first hollow tube is not completely the same, so that after the original noise enters the first hollow tube, due to the different propagation distances of the inner and outer sounds, the phase changes, and the original noise is interfered with at the outlet, thereby achieving a noise reduction effect. The present invention can not only ensure the safety protection function of the mesh cover by introducing a branch pipe silencer structure, but also effectively reduce the fluid noise generated by the high-speed rotation of the fan blades, and has a simple structure and does not require redundant operations.

The utility model discloses a fire hydrant device for fire-fighting early warning, and relates to the technical field of fire hydrants. The fire hydrant device for fire early warning comprises a fire hydrant body, a driving mechanism is arranged on the outer side of the fire hydrant body, a buffer structure is arranged on the outer side of the driving mechanism, the driving mechanism comprises a fixing frame, and an electric hydraulic push rod is fixedly installed on the inner wall of the fixing frame; a connecting rod is fixedly installed at the movable end of the electric hydraulic push rod, and a lifting frame is installed at the other end of the connecting rod. An electric hydraulic push rod on the inner side of the fixed frame can be used for controlling the lifting frame through a connecting rod to realize a height adjusting function, so that the total height of the fixed frame and the lifting frame is flexibly adjusted according to the actual use requirement and the idle state of the fire hydrant main body, and the use convenience of the fire hydrant is ensured; and meanwhile, safety protection in a non-use state is also guaranteed, so that an all-around protection effect is achieved.

The utility model relates to the technical field of glass curtain wall installation, in particular to a glass curtain wall construction installation positioning support structure with an angle adjusting function, which comprises a positioning support structure main body and a glass curtain wall, a base and a base guide rail which are mutually clamped are arranged at the bottom of the positioning support structure main body, and a supporting frame is fixed at the upper end of the base. Lifting hydraulic cylinders are symmetrically fixed in the supporting frame, a lifting positioning frame connected with the movable ends of the lifting hydraulic cylinders is arranged above the supporting frame, a mounting stabilizing frame is arranged on the side face of the lifting positioning frame, and hinge seats clamped and matched with each other are arranged between the mounting stabilizing frame and the lifting positioning frame. And a connecting gear shaft is inserted and fastened between the hinge seats. According to the glass curtain wall construction installation positioning support structure with the angle adjustment function, corresponding positioning adjustment can be carried out according to the size of a glass curtain wall, multi-directional adjustment can be carried out in the glass curtain wall installation process, the safety protection performance in the glass curtain wall installation process is ensured, and meanwhile the positioning efficiency is improved.

The utility model relates to energy -conserving window technical field, concretely relates to a kind of comprehensive energy -conserving safety window. Including window frame and solar water heater, window frame is provided with horizontal beam in, horizontal beam divides window frame into upper frame body and lower frame body, lower frame body is provided with the protective fence extending along horizontal direction in, solar water heater includes water storage device and collector, collector includes heat collecting pipe and first water pipe, heat collecting pipe is arranged multiple in lower frame body along horizontal direction interval, and heat collecting pipe is set in protective fence one side facing away from indoor, horizontal beam is provided with the mounting cavity extending along horizontal direction in, first water pipe is worn in mounting cavity, mounting cavity is filled with heat preservation layer between first water pipe, the upper end of heat collecting pipe extends to mounting cavity and is communicated with first water pipe upwards, the lower end of heat collecting pipe is located on lower frame body. Window frame, protective fence and solar water heater are combined into one, without being reserved installation and maintenance space for each single, effectively increase the use space of balcony, improve construction efficiency.

The utility model provides a kind of safety protection steam generator, comprising: boiler shell, with inner cavity, and with inner cavity communication inlet liquid pipeline, exhaust pipeline;Heating assembly, be set on the outer wall of the bottom plate of boiler shell, for heating bottom plate, and heat is transferred to the liquid flowing into inner cavity by bottom plate, to generate steam;Temperature controller, be set in the outer wall center area of bottom plate, for detecting the temperature of bottom plate, and according to the temperature of bottom plate control heating assembly's operating state;Solenoid valve, be set in exhaust pipeline;Pressure relief valve, be set on boiler shell, and with inner cavity communication;The utility model reduces the structural complexity degree of boiler shell and steam generator on the one hand, is favorable to reduce production manufacturing difficulty, on the other hand, because corresponding assembly hole is saved, it is unnecessary to additionally consider corresponding sealing problem, also improve the safety protection performance of steam generator.

The utility model relates to a high-voltage motor grounding device, which comprises a motor base, a steel plate and a clamping steel plate, the steel plate is welded on the side surface of the motor base, the clamping steel plate with a groove is arranged in front of the steel plate and is connected with the steel plate through four grounding bolts and spring washers, and after the grounding bolts are tightened, the clamping steel plate is fixed on the steel plate. And the bare twisted section of the grounding wire is embedded into a groove in the middle of the clamping steel plate. Compared with the prior art, the high-voltage motor grounding device has the advantages that the motor base grounding device is optimized, so that the safety protection capability of the motor is effectively ensured, the larger contact area between the grounding wire and the base is ensured, the contact resistance is small, the structural design improvement effect is obvious, and the quality is reliable.

The utility model provides a control device for frequency conversion speed regulation and intelligent control of a belt conveyor, which comprises a control device body, a protection assembly and a positioning assembly, a display screen is arranged on the front surface of the control device body, and a control panel is arranged on the front surface of the control device body. The front surface of the control device body is fixedly connected with a fixed plate; the protection assembly is arranged on the outer side of the fixing plate and comprises a baffle, a connecting block, a fixing block, a threaded rod and a moving block. The control device for frequency conversion speed regulation and intelligent control of the belt conveyor solves the problems that external wires of part of existing control devices are scattered, knotting and winding are prone to occurring, aging of the wires is prone to being accelerated due to long-time twisting and friction, the service life is affected, meanwhile, the wires are wound and knotted, current transmission is affected, and the service life is affected. And the lead is in a heating state for a long time, and potential safety hazards such as short circuit are easily caused.

The utility model relates to the technical field of human body safety protection devices, in particular to a telescopic helmet which comprises a spherical crown-shaped top shell, at least one annular bottom shell and a telescopic structure. The outer diameter of the top shell is smaller than the inner diameter of the bottom shell, and the telescopic structure comprises a buckle and a sliding strip matched with the buckle; when the buckle loosens the sliding strip, the sliding strip can slide back and forth along the buckle so as to drive the top shell to retract into or extend out of the bottom shell; and when the sliding strip is clamped by the buckle, the sliding strip cannot slide. Therefore, the telescopic helmet is internally provided with the telescopic structure for connecting the top shell and the bottom shell, and by utilizing the telescopic mechanism of the telescopic structure, the helmet can be ensured to be fully stretched into a complete protection form during use, so that the safety protection performance is ensured; when the helmet is not used, the size is reduced, and the helmet is in an overlapped compact state, so that the carrying portability and the storage convenience of the whole structure are greatly improved, and the diversified requirements of modern users on the helmet are met.

The utility model discloses a filter cake layer filter convenient to detach and clean, which comprises an outer shell, a movable frame, guardrails and a top cover, the movable frame is arranged below the outer side of the outer shell, the guardrails are fixedly arranged on both sides of the top of the movable frame, the top cover is arranged on the top of the outer shell, and the movable frame is arranged on the top of the top cover. A reinforcing structure is arranged at the joint of the top end of the outer shell and the bottom end of the top cover, a filtrate outlet pipe is arranged on one side of the outer wall of the outer shell in a penetrating mode, a plurality of filter element pipes are installed in the outer shell, and detachable structures are arranged among the filter element pipes. The filter cake layer filter convenient to disassemble and clean is provided with a reinforcing structure and a detachable structure, the spill-proof performance and tightness of connection between the outer shell and the top cover of the filter can be enhanced, the installation structure is simple and clear and convenient to operate, the outer shell and the top cover are arranged to be of a detachable structure, the whole filter can be effectively disassembled, and the installation is convenient. And the frequency of replacing damaged parts of the device is effectively reduced, and waste of resources is avoided.

This utility model belongs to the technical field of work platforms, specifically relating to a safe work platform for building construction. It includes a base, a lifting support mechanism above the base, and a safety protection mechanism above the lifting support mechanism. Through the safety protection mechanism, an electric telescopic rod is activated to lift and lower a movable receiving plate. Depending on the on-site work conditions, the movable receiving plate is adjusted and extended via the electric telescopic rod, thus providing good protection for tools used by workers or waste materials generated during construction. Simultaneously, the movable receiving plate allows waste materials to fall into a waste box. A climbing frame allows workers to climb onto the platform, and safety railings and a rotating gate protect the workers. Load-bearing bars and supporting diagonal braces provide support and protection for the platform, railings, rotating gate, and construction personnel, ensuring effective safety protection for personnel walking on the construction safety work platform. It is highly practical.