2results about How to "Avoid direct communication" patented technology

The application relates to an engine rotating opposed-piston shaft cooling system and an engine, the shaft cooling system comprising a power output shaft and a nested shaft nested with the power output shaft, the power output shaft being provided with a power output shaft oil inlet channel and a power output shaft oil outlet channel along an axis, and the power output shaft being provided with a power output shaft oil inlet manifold and a power output shaft oil outlet manifold corresponding to the power output shaft oil inlet channel and the power output shaft oil outlet channel, the power output shaft oil inlet manifold and the power output shaft oil outlet manifold being provided with different cross sections and being provided with a power output shaft first piston and a power output shaft second piston; the nested shaft being provided with a nested shaft oil inlet channel and an oil outlet channel along an axis, and the nested shaft being provided with a nested shaft oil inlet manifold and a nested shaft oil outlet manifold corresponding to the nested shaft first piston and the nested shaft second piston; and the nested shaft oil inlet ring groove and the nested shaft oil outlet ring groove corresponding to the oil inlet oil pad and the oil outlet oil pad, and forming a nested shaft oil inlet main channel and a nested shaft oil outlet main channel.

The invention relates to the technical field of electric power communication security, and discloses a security data transmission system and method for an unmanned aerial vehicle nest and an electric power intranet, and the system comprises an unmanned aerial vehicle terminal, an unmanned aerial vehicle nest with a built-in electric power security Internet of Things card, a security access platform constructed based on a national secret algorithm, and an electric power intranet unmanned aerial vehicle management and control platform. The method comprises the steps that the unmanned aerial vehicle terminal collects data and uploads the data to the unmanned aerial vehicle nest, the unmanned aerial vehicle nest triggers the electric power security Internet of Things card to encrypt the data and transmits the data to the security access platform through the special APN, and after identity authentication, decryption, abnormity monitoring and permission verification, the data are securely accessed to the intranet management and control platform. According to the invention, the special APN isolation public network is adopted, and the national cryptographic algorithm full-process encryption and the main and standby dual-card redundancy design are combined, so that the security risk of the public network is blocked, the transmission stability is ensured, the power intranet access specification is adapted, and the inspection efficiency is improved.