6results about How to "Delay premature failure" patented technology

The invention discloses a data security transmission method for an edge gateway of the Internet of Things, particularly relates to the technical field of data transmission, and is used for solving the problem that an encryption mode of existing low-power-consumption equipment is not flexible in data encryption transmission. Sensing data are collected and preprocessed through low-power-consumption equipment; analyzing a multi-dimensional load state of a communication channel through network state tensor decomposition, and evaluating a future load change risk; time distribution of encryption and decryption links is analyzed through a distributed time optimization game, and link delay balance is evaluated; and dynamically adjusting whether to use the lightweight encryption algorithm based on the analysis result. When a lightweight encryption algorithm is selected, the equipment encrypts data to generate preliminarily encrypted data and transmits the preliminarily encrypted data to the edge gateway; and the edge gateway performs high-strength encryption upgrading on the preliminary encryption data to generate deep encryption data and transmits the deep encryption data to the cloud server. According to the invention, the energy consumption of the low-power-consumption equipment is reduced while the data security is ensured, and the reliability of data transmission is improved.

The invention discloses a vertical greening garbage can, and relates to the technical field of greening garbage cans. The garbage can comprises a garbage can body, a plurality of supporting columns are fixedly connected to the top of the garbage can body, and a rain baffle is fixedly connected to the tops of the supporting columns. The crushing rollers and the auxiliary assembly are arranged, garbage can be crushed through rotation of the two crushing rollers, the auxiliary assembly can be continuously driven to operate while the rotating shaft rotates to drive the crushing rollers to rotate, and through continuous operation of the auxiliary assembly, the garbage above the crushing rollers can be effectively subjected to auxiliary crushing; according to the garbage can, the crushing efficiency is effectively improved, the crushed garbage can be mixed with compost materials in the garbage can body, and finally the garbage can be used as a soil conditioner or a base fertilizer for growth of plants planted in a planting area after being composted and mixed for several days or several weeks, so that resource utilization of the garbage is realized, and the burden on the environment is reduced; automatic and circulating fertilization and maintenance for greening are realized.

The utility model discloses a bag type dust collector for gas purification of a steelmaking converter. The ash bucket is of a double-layer ash bucket structure with an inner ash bucket (4) and an outer ash bucket (3); an ash bucket partition plate (5) is arranged between the inner ash bucket (4) and the outer ash bucket (3); an inlet of the air inlet pipe (1) is formed in the lower part of the middle box body (8) or the side surface of the upper part of the outer ash bucket (3); an inner ash bucket ring beam (6) is arranged in a cavity between the lower part of the filter element (9) in the middle box body (8) and the upper part of the outer ash bucket (3) and the air inlet pipe (1); and a passageway partition plate (7) is arranged in an arch-shaped cavity between the upper part of the inner ash bucket ring beam (6) opposite to the air inlet pipe (1), the outside of a filtering area in the middle box body (8) and a wall plate of the middle box body (8). According to the utility model, not only can the scouring of airflow to the filter bag be reduced, but also coal gas or oxygen-containing flue gas remained in the dust remover can be driven in real time, the contact and mixing probability of the coal gas and oxygen is effectively reduced, the occurrence of burning and explosion accidents is avoided, and the safety of equipment is obviously improved. The device is safe, efficient, energy-saving and economical.

The present application relates to the technical field of electrical control, and particularly relates to a load prediction-based intelligent tap-changer method and system for distribution transformer without power interruption. Multi-source operation data of the load voltage regulating unit of the distribution transformer is loaded first to accurately evaluate the remaining life thereof; then the voltage qualified dead zone width and the double-target optimization function weight coefficient are dynamically set according to the remaining life, and the minimum action interval for tap-changer is configured in combination with the historical action frequency; when the voltage is out of limit, the tap position instruction is generated through double-target optimization, and the tap-changer is executed according to the instruction and the interval and the action information is updated, so that the dynamic balance between the voltage quality and the switch life is realized, and the frequent tap-changer is inhibited. The dynamic balance between the voltage quality guarantee and the load tap changer life protection in the process of tap-changer without power interruption for the distribution transformer can be realized.

A ceramic powder reinforced multilayer metal and intermetallic compound composite structure and a preparation method thereof belong to the technical field of structural and functional composite material preparation. It is a multilayer structure, which is formed by alternately stacking metal plates and ceramic metal plates and realizing interface composite through hot pressing and diffusion, and the relative melting point of the metal in the ceramic metal plate is higher than that of the metal in the metal plate. Ceramic powder is sprayed on the surface of the metal plate in long strips at intervals to obtain a ceramic metal plate. The multilayer structure includes N composite units, and N is not less than 2. A layer of metal plate is placed between two composite units, and each composite unit is a three-layer structure, wherein the upper and lower layers are ceramic metal plates, and the middle layer is a metal plate. The present invention has a multilayer gradient organizational structure and a multilayer performance gradient response mechanism, showing excellent energy absorption and impact resistance, and the preparation process is suitable for the one-piece molding of large-size and complex-shaped protective armor, and has good application prospects.

The application discloses an anti-stone degradable medical magnesium alloy and a preparation method thereof, relates to the technical field of biomedical materials, and aims to solve the technical problems that the prior art cannot simultaneously realize degradable control, interface stability and active anti-stone. The application comprises the following steps: S1. Rheocasting preparation of a magnesium alloy base body: magnesium alloy raw materials are melted under a protective atmosphere, overheated to 50-80 DEG C above the liquidus, poured onto a cooling plate with an inclination angle ranging from 30 to 60 DEG to form a semi-solid slurry, pressed into a mold at a pressure of 80-150 MPa and a speed of 0.2-0.5 m / s, and the mold is opened after pressure and heat preservation for 5-10 min, so that the magnesium alloy base body is obtained. The application has excellent anti-stone performance. On a physical level, the composition gradient transition structure uniformly releases the corrosion products of the magnesium alloy in the form of fine particles, and avoids the accumulation of large products to form stone cores.