13results about How to "Avoid insecurity" patented technology

The invention relates to an aqueous alkaline zinc-iodine battery and a preparation method thereof, and belongs to the technical field of aqueous zinc-iodine batteries. The battery includes: a positive electrode; a negative electrode; and an aqueous alkaline electrolyte; wherein the positive electrode comprises a current collector, a positive electrode active material, a conductive agent and an adhesive, and the positive electrode active material is iodide; the aqueous alkaline electrolyte comprises a chlorine-containing additive, a zinc salt electrolyte, an alkaline inorganic salt and water. The aqueous alkaline zinc-iodine battery provided by the invention is low in cost and simple to manufacture. According to the aqueous alkaline zinc-iodine battery provided by the invention, the iodide is adopted as the positive electrode active material, so that instability and potential safety hazards caused by taking an iodine elementary substance as the positive electrode at present are avoided. The battery disclosed by the invention releases a high-potential discharge platform at 1.65-1.68 V, the discharge capacity reaches 372-385 mAh.g <-1 >, and the battery shows rapid oxidation-reduction kinetics and excellent long-acting cycle stability.

The present invention discloses an intelligent manhole cover, which includes a manhole body, one end of which is a manhole opening; a cover plate, which is arranged on the manhole opening of the manhole body; a first driving mechanism, which includes a driving member, a first sleeve column and a second sleeve column, which can be relatively movable in a vertical direction, the upper end of the first sleeve column is connected to the cover plate, and the lower end of the second sleeve column is connected to the manhole body; the driving member includes a first magnetic member and a second magnetic member arranged to be relatively attracted, an elastic component compressed and connected between the first sleeve column and the second sleeve column, and an electromagnetic component for generating a magnetic force when power is turned on to release the magnetic attraction state of the first magnetic member and the second magnetic member; when the magnetic attraction state of the first magnetic member and the second magnetic member is released, the elastic component drives the second sleeve column to rise in a vertical direction so that the cover plate opens the manhole opening. The technical solution of the present invention can realize the automatic opening of the manhole cover, and has the effects of energy saving and safety.

The application belongs to the technical field of steel structure roof truss installation, in particular to a quick installation auxiliary device for steel structure roof truss installation, comprising a plurality of vertical steel beams and a crane, the vertical steel beams are arranged in linear array on the ground, the upper end surfaces of all vertical steel beams are jointly provided with a frame-shaped plate, a composite truss is arranged above the frame-shaped plate, the composite truss is hoisted to above the frame-shaped plate by the crane, a fastening mechanism is arranged at the bottom of the crane, the fastening mechanism is used for fastening the two side surfaces of the frame-shaped plate, the fastening mechanism comprises a connecting rope installed above the crane; the fastening mechanism can automatically take out the connecting rope from the surface of the composite truss, without the need for workers to manually untie the connecting rope, the operation is relatively safe, convenient and fast, which is beneficial to the installation of the composite truss, and the hoisting mode of the remaining composite trusses is also the same, so that they are arranged in linear array above the frame-shaped plate, so that the roof truss can be quickly installed.

The utility model discloses an automatic leveling type underframe which comprises a fixed frame, a movable frame and a leveling hydraulic cylinder, a hinge seat is arranged on the fixed frame, supporting legs are arranged on the lower portion of the fixed frame, the rear end of the movable frame is hinged to the hinge seat of the fixed frame, and the front end of the movable frame is connected with a piston rod of the leveling hydraulic cylinder. And the bottoms of the leveling hydraulic cylinders are mounted on the supporting legs. The movable frame is provided with two tilt angle sensors, the two tilt angle sensors are respectively a first tilt angle sensor and a second tilt angle sensor, and the first tilt angle sensor is electrically connected with the leveling hydraulic cylinder.

The invention discloses a point-to-point secure communication method and device of a trusted controller and electronic equipment, and relates to the field of point-to-point communication. Point-to-point communication deployment of the trusted controller is divided into a configuration stage, a connection stage and a working stage. In the configuration stage, controller nodes are paired based on a key generated by a physical key switch and random input and based on a random number generated by a built-in trusted platform control module and a dragonfly key exchange protocol algorithm, so that a password is only visible to both parties of equipment, and the safety of a point-to-point channel is greatly enhanced; in the working stage, an HKDF algorithm is adopted to define an adaptive encryption algorithm and encryption strength based on synchronous data features, different encryption algorithms and strengths are adopted for different data types, and the real-time performance is improved while the communication security is guaranteed; according to the method, monitoring, counterfeiting, tampering and replay attacks are effectively resisted, and the real, complete, safe and reliable communication content between the controllers is ensured.

The application provides an organic lithium-iodine battery based on a two-electron transfer mechanism and a manufacturing method and application thereof. The organic lithium-iodine battery comprises a positive electrode, a negative electrode and an organic electrolyte. The positive electrode active material used by the positive electrode comprises iodide and / or bromide, and the organic electrolyte comprises an organic solvent containing a chlorine-containing additive. The organic lithium-iodine battery uses iodide as the positive electrode active material, thereby avoiding the instability and safety hazards existing in the current I2 positive electrode. The organic solvent containing the chlorine-containing additive is used as the organic electrolyte, and excellent electrochemical performance is provided through a two-electron conversion mode. Compared with a traditional lithium-iodine battery, the organic lithium-iodine battery has higher capacity, energy density and higher output voltage. In addition, the organic lithium-iodine battery has excellent low-temperature insensitivity. At-25 DEG C, the battery realizes 2500 cycles at the cost of 20% capacity decay, and can still work stably at a low temperature of-30 DEG C.

The present invention discloses a network gate channel control method, device and computer equipment, comprising: obtaining data to be transmitted, wherein the data to be transmitted at least includes protocol information and field information, wherein the protocol information is used to identify the protocol and data type of the data, wherein the protocol information and the field information can be used to identify the data, when the data is determined to be a SIP protocol according to the protocol information, further determining whether the data includes a key field according to the field information, if the key field is included, controlling the state of the data flow channel according to the key field, thus controlling the data flow channel during the transmission process, thereby solving the insecurity problem caused by the traditional data transmission process when the SIP protocol is used as the network gate protocol, and ensuring the security of both sides of the network gate.

The invention discloses a remote operation and maintenance method for substation secondary equipment, and belongs to the technical field of substation automation. The method comprises the following steps: establishing a communication channel between a remote operation and maintenance master station and a security operation and maintenance gateway; establishing a connection between the security operation and maintenance gateway and the operation and maintenance target equipment, and returning a connection result to the remote operation and maintenance master station; the remote operation and maintenance master station encapsulates the message to be operated and maintained according to the structure of a preset protocol proxy message to obtain the message to be operated and maintained, and sends the message to be operated and maintained to a security operation and maintenance gateway; the security operation and maintenance gateway unpacks the to-be-operated and maintained message to obtain an unpacked to-be-operated and maintained message, and sends the unpacked to-be-operated and maintained message to an operation and maintenance target device; and according to a preset operation and maintenance protocol type, the remote operation and maintenance master station carries out remote operation and maintenance on the unpacked message to be operated and maintained.

The invention discloses a scenic spot emergency dispersion route planning method based on an improved A star algorithm, a storage medium, equipment and a computer program product, and the method comprises the steps: carrying out the grid division of a scenic spot, searching for an adjacent grid according to a grid where a tourist is located when an emergency occurs, building a safety cost function, and carrying out the calculation of the safety cost function; calculating the time for the tourist to move to each adjacent grid and a time cost function; establishing a heuristic function according to the Euclidean distance between each adjacent grid and each exit of the scenic area; constructing a total cost function by using a safety cost function, a time cost function and a heuristic function, arranging the total cost function according to a sequence from small to large, and selecting a plurality of first adjacent grids as grids where tourists are located after the tourists move; and for the grid where each tourist is located after the tourist is moved, the above process is repeated until the grid where the tourist is located after the tourist is moved is the exit of the scenic spot, a plurality of paths of the tourist moving from the grid where the tourist is located to the exit of the scenic spot are obtained, and the shortest path is used as a tourist emergency guidance path.

The utility model relates to the technical field of corrugated paper, in particular to a feeding device for corrugated paper raw material coiled materials, which comprises a main body mechanism, a feeding mechanism and a cutting mechanism, the feeding mechanism is positioned on one side of the main body mechanism and in the main body mechanism, the cutting mechanism is positioned at the top end of the main body mechanism, and the relative distance between limiting discs is adjusted through limiting bolts. Therefore, the coiled materials with different widths can be limited, flexibility and convenience are achieved, and displacement of the coiled materials in the rolling and unwinding process is avoided. A third motor drives a paper feeding guide roller to rotate, a coiled material is guided and fed into a cutting chamber, a fourth motor drives a movable block to move back and forth along a reciprocating lead screw, and therefore the effect that a cutting tool bit cuts and divides the coiled material along the position of a cutting groove is achieved, and the feeding and cutting mechanical operation mode is stable, efficient and high in efficiency. And meanwhile, the problems of time and labor waste and unsafety caused by manual cutting are solved, and the economic benefits and practicability of the device are improved.

The application discloses a navigation three-screen interactive control method and system, a vehicle and a storage medium, and relates to the technical field of vehicle control. The method comprises the following steps: in response to detecting that an automatic screen projection function has been activated, a long-time application trigger, and the fact that the instrument screen can execute navigation screen projection, the instrument screen displays full-screen navigation; in response to detecting that the automatic screen projection function has been activated, the long-time application trigger, and the fact that the instrument screen cannot execute navigation screen projection, but the third screen can execute navigation screen projection, the third screen displays full-screen navigation; in response to detecting that the automatic screen projection function has been activated, a short-time application trigger or the fact that the car machine screen is switched from desktop one to desktop two, and the fact that the third screen can execute navigation screen projection, the third screen displays full-screen navigation; and in response to detecting that the automatic screen projection function has been activated, the short-time application trigger or the fact that the car machine screen is switched from desktop one to desktop two, and the fact that the third screen cannot execute navigation screen projection, but the instrument screen can execute navigation screen projection, the instrument screen displays full-screen navigation. The application realizes automatic switching of navigation information among the car machine screen, the instrument screen and the third screen.

This utility model discloses a foldable, storage-friendly cylindrical children's play tunnel, relating to the field of children's toy technology. It includes a crawling tunnel toy, an inner tunnel cylinder, decorative leaves, and side support plates. The inner tunnel cylinder is fitted to the inner wall of the crawling tunnel toy. When in use, the inner wall of the inner tunnel cylinder features various patterns, making it easy for infants to observe and judge the shapes while crawling, thus enhancing their cognitive abilities. The inner tunnel cylinder is composed of multiple sections, each made of different materials, which can exercise the infant's tactile senses. Furthermore, the inner tunnel cylinder, through a component controller, can drive a twisting tube to make the crawling tunnel toy twist, increasing the enjoyment for the infant while crawling. Simultaneously, the chip inside the component controller has recording and voice-controlled playback functions, enhancing the infant's auditory and visual perception abilities and increasing the tunnel toy's fun and cost-effectiveness.

The present disclosure provides a drilling fluid return system for offshore riser-free drilling, the system comprising: a drilling fluid volume control unit, an open water drilling drill pipe, a drilling fluid return pipeline, a drilling fluid return pump installed thereon, and a drilling fluid treatment device. The drilling fluid volume control unit is directly installed on the wellhead or above the riser-free blowout preventer, and its top is open to the seawater. The drill pipe extends from the drilling platform through the volume control unit, and drilling operations are performed through the inside of the volume control unit. The drilling fluid return pipeline is connected to the volume control unit through a hose, and the drilling fluid return pump is sequentially installed in a pipe section in the return pipeline along the axial direction, which is used to pump the drilling fluid flowing into the return pipeline from the volume control unit back to the drilling platform, and circulate it after being treated by the drilling fluid treatment device. The system is not limited by the size of the drilling ship and the water depth, can effectively recover the drilling fluid, and is suitable for drilling operations at full water depth.