6results about How to "Avoid unsafe situations" patented technology

The invention discloses a pressurization guarantee cabin for tunnel field command, relates to the technical field of guarantee cabins, and solves the technical problems that in the prior art, movement and walking are inconvenient, and a safety structure for guaranteeing the balance pressure inside and outside a cabin door does not exist. A multi-layer cabin body structure is fixedly installed on the upper wall face of the main machine frame, a peep window is fixedly installed on the front wall face of the multi-layer cabin body structure, and a pressure maintaining porch structure is fixedly installed on the side wall face of the multi-layer cabin body structure. The pressure in the porch pipe and the cabin body is adjusted through the constant pressure machine, internal pressure leakage or external high-pressure gas invasion can be prevented, and the long-term stability of the air pressure environment in the cabin is ensured. The multi-layer cabin body structure enhances the pressure resistance of the cabin body, can bear an external high-pressure or low-pressure environment, and also can prevent accidents such as tunnel collapse from causing physical damage to the structure.

The invention relates to the field of industrial control, and discloses a control authority distribution system which comprises an authority request module, an authority distribution module, an authority release module and a safety fault-tolerant module. The permission request module is used for collecting control permission requests of the operation terminals; the authority distribution module dynamically processes the requests according to an M / M / 1 queuing model, a game theory model and a Markov decision process, determines the priorities of the operation terminals, and adopts the game theory model to solve conflicts if a plurality of operation terminals request simultaneously; the permission release module automatically releases the control permission under the condition that the operation is completed or overtime; and the security fault-tolerant module verifies the consistency and security in the permission allocation process through a Byzantine fault-tolerant algorithm. According to the invention, the response speed of the system can be improved, the security of multi-terminal operation and the resource utilization efficiency are ensured, and strong fault-tolerant capability and stability are provided.

The invention discloses a production material tracing method and system based on an MES (Manufacturing Execution System), and relates to the technical field of production material tracing management. After a target product is obtained after the last production process is completed, summarizing and processing to obtain process processing data; a data processing unit constructs a storage square chart according to 16 four-bit binary numbers, a tracing management unit converts the storage square chart according to a preset storage conversion rule to obtain process tracing data, the process tracing data is ciphertext data in the process, and the storage square chart in the generation process of the process mainly depends on conversion logic as a basis. In this way, the situation that the monitoring data of the target product is unsafe possibly due to improper management of the secret key when the secret key is used for managing the storage data is avoided, and the risk of leakage of the production process of enterprise products is further reduced.

The utility model relates to pulley technical field especially a kind of high safety's sports equipment pulley, including main pulley, equipment main frame is equipped on main pulley, main connecting shaft is set on equipment main frame, anti-rollover frame is set on equipment main frame, vice connecting shaft is set on anti-rollover frame, anti-rollover pulley is set on vice connecting shaft, safety outer ring is set on main pulley and anti-rollover pulley, protective pad ring is set on safety outer ring, main safety sheath is set on main connecting shaft, vice safety sheath is set on vice connecting shaft.It improves the security for small volume pulley type sports fitness equipment for waist and abdomen strength, improves the anti-abrasion safety of the outer wall of main pulley and anti-rollover pulley placed on wooden floor, avoids the insecurity that the protruding main connecting shaft and vice connecting shaft part on main pulley and anti-rollover pulley is easily scratched with side wall.

The utility model discloses a tool for steel plate processing, which comprises a base, two first air cylinders are fixedly installed on the inner wall of the top side of the base, the output ends of the two first air cylinders both penetrate through the base and are fixedly connected with the same placing plate, the placing plate is L-shaped, and two guide grooves are formed in the placing plate. Through the arrangement of the placing plate, the guide grooves, the limiting plate, the guide blocks, the limiting grooves, the fixing grooves and the limiting rods, the bottom end of a steel plate can be clamped when the steel plate is placed, due to the fact that the position of the limiting plate can be adjusted, the steel plates with different thicknesses can be clamped, and after the steel plate is turned over, the steel plate can be conveniently and rapidly placed. And the first air cylinder is started again to drive the placing plate to move upwards, the placing plate can play a role in supporting the steel plate when making contact with the bottom side of the steel plate, the unsafe situation caused by long-time suspension of the steel plate is avoided, personnel operation is not needed when the steel plate is turned over, and safety is higher.

The invention discloses a parking management method and device based on a block chain technology and a medium, and relates to the technical field of parking management. Vehicle information of a driving vehicle pre-entering a target parking lot is collected and authenticated, and a corresponding reservation number is extracted after authentication is passed; performing protection uploading on the parking record information of the driving vehicle according to the reservation number, determining a first position array and a second position array of the current parking of the driving vehicle based on the randomly generated reservation number in the protection uploading process, and combining the first position array and the second position array with a plurality of groups of processing arrays converted from the parking record information to obtain a slice reconstruction array of each group of processing arrays; after being generated, the slice reconstruction array of each group of processing array depends on the updating of the first position array and the second position array by the previous group of processing array, and the generation of the slice reconstruction array of the first group of processing array depends on the reservation number, so that the dynamic variability of each parking record information is ensured; in this way, the high safety of the parking record information of the running vehicle is ensured.