6results about How to "Protection position" patented technology

The invention provides a wind power blade deicing control system lightning protection circuit and a test method, the circuit comprises a temperature sensor, a lightning protection module, an optocoupler signal isolator, a PLC, a main CPU and a power supply assembly, the temperature sensor is arranged on a wind power blade, a first signal end, a second signal end and a shielding shell of the temperature sensor are connected with the lightning protection module, and the optocoupler signal isolator is connected with the PLC. The lightning protection module is connected with the optocoupler signal isolator, the optocoupler signal isolator is connected with the PLC, the PLC is connected with the main CPU, a power supply from a wind power host is connected with the power supply assembly, and the power supply assembly is connected with the PLC, the main CPU and the optocoupler signal isolator and is used for supplying power. According to the invention, the PLC, the switching power supply, the CAN bus and other modules in the control system can be protected from common ground, so that the lightning current cannot enter equipment to cause damage during lightning stroke, the lightning protection method in the control system is protected to be distributed according to the lightning protection level, and the position of a lightning triggering point during lightning stroke of the wind power blade deicing control system is protected.

This invention relates to the field of network security technology, specifically to a method, system, device, and storage medium for security verification of edge nodes. The method first verifies the reputation value of edge nodes that wish to participate in processing tasks published by users, determining whether the edge node's reputation value has changed and deciding whether the edge node should execute the task. Then, based on the edge node's edge location data, public key, and private key, it verifies the node information to determine whether the edge node's information has been tampered with, deciding whether the edge node should execute the task. Finally, without requiring users and edge nodes to upload location privacy and real identities, it performs a matching index overlap check to determine whether the edge node is within the service range, selecting a secure edge node to execute the task. This method not only performs secure edge node verification but also protects the identity and location privacy of edge nodes, saving unnecessary overhead.

The utility model provides a packaging structure of a Rogowski coil and a nuclear fusion reaction device. A surrounding area of the Rogowski coil is used for plasma current to pass through; the packaging structure comprises a plurality of coating parts, and the plurality of coating parts are arranged along the circumferential direction of the Rogowski coil and respectively coat different areas in the Rogowski coil; the wrapping part comprises a first shell and a second shell, the first shell and the second shell wrap the Rogowski coil from the inner side and the outer side of the Rogowski coil respectively, and the side edge of the second shell is located in the surrounding space of the first shell. By using the packaging structure, the Rogowski coil can be well protected, the damage of plasma to the Rogowski coil is reduced, the service life of the Rogowski coil is prolonged, and the detection effect of the Rogowski coil on plasma current is ensured to be good.

The utility model relates to the technical field of laminated slabs, and discloses a prefabricated laminated slab structure which comprises a slab body, mesh steel bars are arranged in the slab body, and truss steel bars with one ends penetrating to the outer side of the slab body are fixedly installed in the slab body. By arranging the mesh reinforcing steel bars and the truss reinforcing steel bars and reasonably arranging the staggered intervals, the overall performance is not changed while part of the reinforcing steel bars are reduced, the processing time of the laminated slab is shortened, the balance of quality, efficiency and cost is achieved, and meanwhile the connecting angle of the web member reinforcing steel bars is adjusted, so that the overall performance of the laminated slab is improved. Supporting points during installation of a large number of truss steel bars can be reduced, the construction efficiency can be improved, meanwhile, the diameter and the overall height of the steel bars are adjusted and used according to the load-bearing requirement, the overall quality is guaranteed, meanwhile, needed work during production of the laminated slab is reduced as much as possible, and dual optimization of the structural performance and the construction efficiency is achieved.

The invention discloses a PUF (Physical Unclonable Function)-based Internet of Vehicles identity authentication method and system, and relates to the technical field of Internet of Vehicles identity authentication, the method comprises the following steps: a vehicle and an RSU respond to and restore key parameters by using a preset PUF, and the vehicle sends a request containing a pseudo identity, a first authentication code and a temporary public key to the RSU; the RSU verifies the legality of the identity of the vehicle by calculating and comparing the first authentication code, and after the verification is passed, the RSU generates a second authentication code and an updated pseudo name and sends the second authentication code and the updated pseudo name to the vehicle; the vehicle completes identity authentication of the RSU by verifying the second authentication code; according to the method, both parties generate a unified session key by mixing parameters generated in two authentication processes, including a first authentication code, a second authentication code, an updated pseudo name and a temporary identity key obtained through elliptic curve Diffie-Hellman exchange, and after authentication succeeds, the both parties can independently update local PUF related parameters, so that the authentication efficiency is improved. Forward security is achieved, and machine learning attacks are effectively resisted.

This application relates to the field of aluminum rod processing inspection, and discloses a device for testing the processing accuracy of electrical aluminum rods. The device includes a main body, with a working frame plate fixedly connected to its upper end. Multiple sliding rods are fixedly connected to the side of the working frame plate, and a first sliding block is slidably connected to each sliding rod. A connecting rod is fixedly connected to the side of the first sliding block. Rotating a hand-held screw causes an upper locking plate to approach the opposite aluminum rod, facilitating the engagement of the upper and lower locking plates. This allows for auxiliary support of the aluminum rod inside the annular plate. The sliding position of the first sliding block within the sliding rod allows for easy adjustment of the annular plate's working position. The connecting rod connects the first sliding block and the annular plate, ensuring interconnectivity between the device components and facilitating subsequent operations.